Untitled Document

Resistor Thin Film Precision

RNP Series

  Ask about this product   Available in PDF
Johanson’s Precision Thin Film Resistors (RNP Series) are designed for applications where close accuracy and exceptional stability are the critical parameters. The Precision Thin Film series are available in a wide range of industry standard case sizes including 0402, 0603, 0805, 1206, 2010 and 2512, with resistance values ranging from 1Ω to 3MΩ, and tight tolerances to ± 0.01%. With very low tolerances to ± 0.01% and low temperature coefficients to ± 5ppm/°C, the RNP series is an excellent solution for industrial applications.
Resistor Thin Film Precision product image

KEY FEATURES:

  • Resistances from 1 Ohm to 3M Ohms
  • Resistance Tolerances to ± 0.01%
  • Power Rating 0.06 to 0.75 Watts
  • TCR's up to ± 5ppm/ºC
  • Operating Temperature: - 55ºC to + 155ºC
  • Available in sizes 0402, 0603, 0805, 1206, 2010, 2512
  • RoHS Compliant

APPLICATIONS:

  • Motor Control
  • Precision Scales
  • Smart Grid Metering
  • Temperature Sensors

PRODUCT SUMMARY:

PACKAGE SIZE STANDARD POWER RATING HIGH POWER RATING
RESISTANCE RANGE (Ω) POWER RATING (W) AT 70°C RESISTANCE RANGE (Ω) POWER RATING (W) AT 70°C
04021 - 511K0.0625 - -
0603 1 - 1M0.0625 4.7 - 1M 0.100
0805 1 - 2M0.100 1 - 1M 0.125
1206 1 - 2.49M0.125 4.7 - 1M 0.250
2010 1 - 3M 0.250 4.7 - 1M 0.333
2512 1 - 3M 0.500 1 - 2K 0.750

Resistor Thin Film Precision Power Derating Curve

Standard Power Rating Specifications

Standard Package Size
Size 0402 (RNP07S)
Size 0603 (RNP14S)
Size 0805 (RNP15S)
Max Working Voltage (V) 1
25V
50V
100V
Max Overload Voltage (V) 2
50V
100V
200V
Power Rating (W) at 70ºC
0.0625
0.0625
0.100
TCR PPM/°C ±5 ±10 ±15 ±25 ±50 ±5 ±10 ±15 ±25 ±50 ±5 ±10 ±15 ±25 ±50
Resistance Range(Ω)
 ±0.01% Tolerance
49.9Ω to 4.99KΩ
49.9Ω to 12KΩ
-
24.9Ω to 15KΩ
 24.9Ω to 100KΩ -
24.9Ω to 30KΩ
 24.9Ω to 200KΩ -
±0.05% Tolerance 49.9Ω to 12KΩ
4.7Ω to 332KΩ
4.7Ω to 1MΩ
 4.7Ω to 1MΩ
±0.1% Tolerance
49.9Ω to 60KΩ
49.9Ω to 69.8KΩ
 10Ω to 255KΩ
4.7Ω to 511KΩ
4.7Ω to 1MΩ
 4.7Ω to 2MΩ
±0.25% Tolerance
4.7Ω to 511KΩ
1Ω to 1MΩ
1Ω to 1MΩ
1Ω to 2MΩ
±0.5% Tolerance
±1%
Tolerance

 

Standard Package Size
Size 1206 (RNP18S)
Size 2010 (RNP19S)
Size 2512 (RNP20S)
Max Working Voltage (V) 1
150V
150V
150V
Max Overload Voltage (V) 2
300V
300V
300V
Power Rating (W) at 70ºC
0.125
0.250
0.500
TCR PPM/°C ±5 ±10 ±15 ±25 ±50 ±5 ±10 ±15 ±25 ±50 ±5 ±10 ±15 ±25 ±50
Resistance Range(Ω)
 ±0.01% Tolerance
24.9Ω to 49.9KΩ
 24.9Ω to 499KΩ -
24.9Ω to 100KΩ
 24.9Ω to 499KΩ -
24.9Ω to 100KΩ
 24.9Ω to 499KΩ -
±0.05% Tolerance
4.7Ω to 1MΩ
 4.7Ω to 1MΩ
4.7Ω to 1MΩ
 4.7Ω to 1MΩ
4.7Ω to 1MΩ
 4.7Ω to 1MΩ
±0.1% Tolerance 4.7Ω to 2.49MΩ 4.7Ω to 3MΩ 4.7Ω to 3MΩ
±0.25% Tolerance
1Ω to 2.49MΩ
1Ω to 3MΩ
1Ω to 3MΩ
±0.5% Tolerance
±1%
Tolerance
Resistor Thin Film Precision Calculations

High Power Rating Specifications

High Power Package Size Size 0603 (RNP14H) Size 0805 (RNP15H) Size 1206 (RNP18H)
Max Working Voltage (V) 1 75V 150V 200V
Max Overload Voltage (V) 2 150V 300V 400V
Power Rating (W) at 70ºC 0.100 0.125 0.250
TCR PPM/°C ±5 ±10 ±15 ±25 ±50 ±5 ±10 ±15 ±25 ±50 ±5 ±10 ±15 ±25 ±50
Resistance Range(Ω)
±0.01% Tolerance
24.9Ω to 15KΩ
 24.9Ω to 100KΩ
24.9Ω to 30KΩ
 24.9 to 200K
24.9Ω to 49.9KΩ
 24.9Ω to 499KΩ
±0.05% Tolerance
4.7Ω to 332KΩ
 4.7Ω to 332KΩ
4.7Ω to 511KΩ
 4.7Ω to 511KΩ
4.7Ω to 1MΩ
±0.1% Tolerance
4.7Ω to 1MΩ
4.7Ω to 1MΩ
 4.7Ω to1 MΩ
±0.25% Tolerance
1Ω to 1MΩ
±0.5% Tolerance
±1% Tolerance

 

High Power Package Size Size 2010 (RNP19H) Size 2512 (RNP20H)
Max Working Voltage (V) 1 200V 200V
Max Overload Voltage (V) 2 400V 400V
Power Rating (W) at 70ºC 0.333 0.750
TCR PPM/°C ±5 ±10 ±15 ±25 ±50 ±10 ±15 ±25 ±50
Resistance Range(Ω)
 ±0.01% Tolerance
24.9Ω to 49.9KΩ
 24.9Ω to 499KΩ 24.9Ω to 2KΩ
±0.05% Tolerance
4.7Ω to 1MΩ
 4.7Ω to 2KΩ
±0.1% Tolerance
±0.25% Tolerance
1Ω to 2KΩ
±0.5% Tolerance
±1% Tolerance
RNP Calculations

Mechanical Characteristics

Chassis mount resistor Mechanical Characteristics and Dimensions
Dimensions
Package Size L (Length)
Inches [mm]		 EB (End Band)
Inches [mm]		 W (Width)
Inches [mm]		 T (Thickness)
Inches [mm]
04020.04 [1.02]0.007 [0.18]0.02 [0.51]0.012 [0.30]
06030.06 [1.52]0.012 [0.30]0.03 [0.76]0.018 [0.46]
08050.08 [2.03]0.012 [0.30]0.05 [1.27]0.022 [0.56]
12060.12 [3.05]0.016 [0.41]0.06 [1.52]0.022 [0.56]
20100.19 [4.83]0.023 [0.58]0.09 [2.29]0.022 [0.56]
25120.25 [6.35]0.023 [0.58]0.12 [3.05]0.022 [0.56]

Environmental Performance

Requirement  
Test Tolerance
<0.05%		 Tolerance
>0.05%		 Conditions
Bending StrengthTolerance change for Bending Strength less than R±0.05%R±0.05%Tolerance change for Bending Strength greater than R±0.02%R±0.2%Bending amplitude 3mm for 10 seconds
Resistance to Soldering HeatTolerance change for resistance to Soldering Heat less than R±0.05%R±0.05%Tolerance change for resistance to Soldering Heat greater than R±0.2%R±0.2%260±5°C for 10 seconds
Thermal ShockDelta Change Symbol for Thermal Shock less thanR±0.05%Delta Change Symbol for Thermal Shock greater thanR±0.25%-55°C~150°C, 100 cycles
Insulation Resistance>1000 MΩApply 100VDC for 1 minute
TCRAs Spec.+25/-55/+25/+125/+25°C
Solderability95% min coverage245±5°C for 3 seconds
Damp Heat With Load
Delta Change Symbol for Damp Heat With Load less thanR±0.05%Delta Change Symbol for Damp Heat With Load greater thanR±0.3%
40±2°C, 90~95% R.H. Max. working voltage for
1000 hrs with 1.5 hrs “ON” and 0.5 hrs “OFF”
Delta Change Symbol for Damp Heat With LoadR±0.5%
(For High Power Rating)
Load Life
Delta Change Symbol for Load Life less thanR±0.05%Delta Change Symbol for Load Life greater thanR±0.2%
70±2°C, Max. working voltage for
1000 hrs with 1.5 hrs“ON” and 0.5 hrs “OFF”
>7kΩD R±0.5%
Delta Change Symbol for Load LifeR±0.5%
(For High Power Rating)
Low Temperature Operation
Delta Change Symbol for Low Temperature Operation less thanR±0.05%Delta Change Symbol for Low Temperature Operation greater thanR±0.2%
1 hour, -65°C, followed by 45 minutes of RCWV
Delta Change Symbol for Low Temperature OperationR±0.5%
(For High Power Rating)
Short Time Overload
Delta Change Symbol for Short Time Overload less thanR±0.05%Delta Change Symbol for Short Time Overload greater thanR±0.2%
RCWV*2.5 or Max. overload voltage for 5 seconds
Delta Change Symbol for Short Time OverloadR±0.2%
(For High Power Rating)

* Moisture Sensitivity Level: MSL-1

Available Options (Consult Factory)

  • Special Testing Requirements

How to Order

Resistor Thin Film Precision Series Part Number Breakdown

Resistor Wirewound Chassis Mount

RWC Series
  Ask about this product   Available in PDF
Chassis mount resistors are manufactured using wirewound resistor technology in a large ceramic core molded into an extruded aluminum, chassis-mount housing. The wirewound design maximizes pulse handling, while the aluminum housing provides superior heat conduction.
For applications where the design of the resistor is to promote heat loss and cooling, a chassis mount resistor is an ideal resistor for your next design. Our chassis mount pulse-withstanding resistors are preferred by design engineers for their low temperature coefficient of resistance (TCR).
Chassis mount low TCR resistors that can be attached to heat sinks to dissipate heat, increase the capability of the resistor. Panel mount resistors are ideal for shunt and current monitoring circuits.
Johanson Dielectrics RWC chassis mount resistors are available with non-inductive windings. Four terminal designs are available as well for improved thermal management. Resistance values range from 0.005 ohm up to 250k ohm.
Contact us for your unique resistor requirement. Whether it’s the temperature of coefficient, tolerance or form factor you’re looking for, our applications engineers will assist in fast tracking your design to production.
Resistor Wire wound chassis Mount

KEY FEATURES:

  • Resistances from 0.005 to 250kOhms
  • Tolerance to ± 0.01%
  • High Temperature: - 55ºC to + 275ºC
  • Low TCR: ± 20ppm/ºC
  • Power Rating 5 to 50 Watts
  • Excellent Pulse Handling
  • Non-Inductive windings available
  • Four Terminal Versions Available (Call Factory)
  • RoHS Compliant

APPLICATIONS:

  • Motor Control
  • Braking Systems
  • Welding
  • X-Ray

PRODUCT SUMMARY:
PRODUCT SERIES (RWC) RESISTANCE RANGE (Ω) 1 POWER RATING (W @ 25ºC) DIELECTRIC STRENGTH TEMPERATURE COEFFICIENT TEMPERATURE RANGE
FREE
AIR		 COMMERCIAL MIL
G10.01 to 22K4.5 7.5 a 5 a 1500 VAC
  • >10 Ω: ± 20ppm/ºC
  • 1 Ω to 10 Ω: ± 50ppm/ºC
  • <1Ω: Call Factory
-55°C to + 250°C
G2 0.01 to 47K7.5 12.5 a 10 a 1500 VAC
G3 0.01 to 90K12 25 b 20 b 2500 VAC
G4 0.01 to 250K20 50 c 30 c 3500 VAC
TOLERANCE: ± 0.01 to ± 10% (1% Standard)
1 For non-inductive windings, divide maximum resistance by 2
a Heatsink required: 0.040 [1.0] Aluminum Plate, 129 in2 [832 cm2] or equiv.
b Heatsink required: 0.040 [1.0] Aluminum Plate, 167 in2 [1077 cm2] or equiv.
c Heatsink required: 0.059 [1.5] Aluminum Plate, 291 in2 [1877 cm2] or equiv.
d Heatsink required: 0.125 [3.2] Aluminum Plate, 294in2 [1896cm2] or equiv.
e Heatsink required: 0.125 [3.2] Aluminum Plate, 895 in2 [5780 cm2] or equiv.

Mechanical Characteristics

Chassis mount resistor Mechanical Characteristics and Dimensions
Package Code G1 G2 G3 G4
Dimensions
Inches [mm]
 A (Tolerances)
±0.005 [±0.13 mm]		 0.444 [11.28] 0.562 [14.27] 0.719 [18.26] 1.563 [39.70]
B (Tolerances)
±0.005 [±0.13 mm]		 0.490 [12.45] 0.625 [15.88] 0.781 [19.84] 0.844 [21.44]
C (Tolerances)
±0.031 [±0.79 mm]		 0.600 [15.24] 0.750 [19.05] 1.062 [26.97] 1.968 [49.99]
D (Tolerances)
±0.062 [±1.57 mm]		 1.125 [28.58] 1.320 [33.53] 1.870 [47.50] 2.760 [70.10]
E (Tolerances)
±0.015 [±0.38 mm]		 0.334 [8.48] 0.430 [10.92] 0.530 [13.46] 0.615 [15.62]
F (Tolerances)
±0.015 [±0.38 mm]		 0.646 [16.41] 0.800 [20.32] 1.080 [27.43] 1.140 [28.96]
G (Tolerances)
±0.015 [±0.38 mm]		 0.320 [8.13] 0.400 [10.16] 0.560 [14.22] 0.615 [15.62]
H (Tolerances)
±0.010 [±0.25 mm]		 0.065 [1.65] 0.075 [1.91] 0.085 [2.16] 0.085 [2.16]
J (Tolerances)
±0.010 [±0.25 mm]		 0.140 [3.56] 0.190 [4.83] 0.260 [6.60] 0.300 [7.62]
K (Tolerances)
±0.010 [±0.25 mm]		 0.078 [1.98] 0.093 [2.36] 0.172 [4.37] 0.196 [4.98]
L (Tolerances)
±0.005 [±0.13 mm]		 0.093 [2.36] 0.093 [2.36] 0.125 [3.18] 0.125 [3.18]
M (Tolerances)
±0.015 [±0.38 mm]		 0.078 [1.98] 0.102 [2.60] 0.125 [3.18] 0.125 [3.18]
N (Tolerances)
±0.006 [±0.15 mm]		 0.050 [1.27] 0.080 [2.03] 0.080 [2.03] 0.080 [2.03]
O (Tolerances)
±0.062 [±1.57 mm]		 0.266 [6.76] 0.312 [7.93] 0.438 [11.13] 0.438 [11.13]
P (Tolerances)
±0.031 [±0.79 mm]		 0.245 [6.22] 0.312 [7.92] 0.391 [9.93] 0.422 [10.72]
Q (Tolerances)
±0.002 [±0.05 mm]		 0.051 [1.30] 0.098 [2.49] 0.098 [2.49] 0.098 [2.49]
R (Tolerances)
±0.031 [±0.79 mm]		 0.085 [2.16] 0.160 [4.06] 0.185 [4.70] 0.185 [4.70]
MIL-R-39009 / MIL-R-18546 RER-60 / RE-60 RER-65 / RE-65 RER-70 / RE-70 RER-75 / RE-75

Environmental Performance

Environmental Performance
(MIL-STD 202)		 tringle symbolR
Vibration ±0.1 % + 0.05 Ω
Load Life ± 1% + 0.05 Ω
Moisture Resistance ±0.2 % + 0.05 Ω
Dielectric ±0.2 % + 0.05 Ω
Storage ±0.2 % + 0.05 Ω
Shock ±0.1 % + 0.05 Ω
Thermal Shock ±0.2 % + 0.05 Ω
5X Overload (5s) ±0.2 % + 0.05 Ω

CONSTRUCTION NOTES:

  • Centerless ground ceramic core
  • Tinned copper or copperweld leads
  • All welded terminations
  • High Temperature epoxy molding compound
  • Anodized aluminum housing

* Moisture Sensitivity Level: MSL-1

RWC Power Derating Curve chart

Available Options (Consult Factory)

  • Special Testing Requirements
  • Special Pulse Requirements

How to Order

RWC Series Part Number Breakdown

Resistor Wirewound High Power Rating

RWH Series
  Ask about this product   Available in PDF
Our Wirewound High Power Rating Resistors or RWH series have high power rating of up to 15 watts, and these resistors contains silicone coating that provides protection against high temperatures. These axial leaded resistors also feature excellent pulse handling, a temperature coefficient of as low as ± 20ppm/°C, and a complete welded construction. Additionally, the RWH series are capable of sustaining extreme voltage fluctuations making them well suited for industrial applications such as motor control, and medical applications such as MRI’s.
Resistor Wirewound High Power Rating

KEY FEATURES:

  • Excellent Pulse Handling
  • Resistance Tolerances to ± 0.01%
  • Resistances from 0.02 to 260kOhms
  • MIL-R-26 / MIL-R-39007 Power Ratings
  • Low TCR: ± 20ppm/ºC Standard
  • Non-Inductive Windings available
  • RoHS Compliant

APPLICATIONS:

  • HDVC-Systems
  • Braking Systems
  • Power Supplies
  • Fluid Heater

PRODUCT SUMMARY:

PRODUCT SERIES (RWH) POWER RATING (W) DIELECTRIC STRENGTH TOLERANCE TEMPERATURE COEFFICIENT TEMPERATURE RANGE
Miniature Axial
1 to 15
500 VAC: E01, E02, E03, E04, E05, E06

1000 VAC: All Others
± 0.01% to
± 10% (1% Standard)
  • >10 Ω : ± 20ppm/ºC
  • 1 Ω to 10 Ω : ± 50ppm/ºC
  • <1 Ω : Call Factory
-55°C to + 250°C
Axial
0.1 to 15
500 VAC: F01, F02, F03, F04, F05, F06, F07

1000 VAC: All Others		Characteristic U: -55°C to + 275°C

Characteristic V: -55°C to + 350°C

Miniature Axial

RWH MEchanical Characteristics and Dimensions
Package Code E01 E02 E03 E04 E05 E06 E07 E08 E09 E10 E11 E12 E13
Max Resistance (Ω) 1 3.4k 3.4k 7.5k 7.5k 10k 10k 12.5k 25k 32k 50k 95k 150k 260k
Max Working Voltage (V) 33 33 42 42 80 80 135 162 194 258 425 607 1050
Power Rating (W) 1 1 1.5 1.5 2 2 3 4 5 6 7 10 15
Dimensions
Inches [mm]
 A
±0.062”
[±1.57mm]		 0.250
[6.35]		 0.250
[6.35]		 0.312
[7.92]		 0.312
[7.92]		 0.406
[10.31]		 0.406
[10.31]		 0.350
[8.89]		 0.560
[14.22]		 0.500
[12.70]		 0.625
[15.88]		 0.875
[22.23]		 1.220
[30.99]		 1.780
[45.21]
B
±0.031”
[±0.79mm]		 0.085
[2.16]		 0.085
[2.16]		 0.078
[1.98]		 0.078
[1.98]		 0.094
[2.39]		 0.094
[2.39]		 0.156
[3.96]		 0.187
[4.75]		 0.218
[5.54]		 0.250
[6.35]		 0.312
[7.92]		 0.312
[7.92]		 0.375
[9.53]
C 2
±0.002”
[±0.05mm]		 0.020
[0.51]		 0.025
[0.64]		 0.020
[0.51]		 0.025
[0.64]		 0.025
[0.64]		 0.020
[0.51]		 0.032
[0.81]		 0.032
[0.81]		 0.040
[1.02]		 0.040
[1.02]		 0.040
[1.02]		 0.040
[1.02]		 0.040
[1.02]
MIL-R-26 / MIL-R-39007
 RW-81
RWR-81		 RW-81
RWR-81
RWR-82
RWR-82
 RW-80
RWR-80		 RW-80
RWR-80		        
RW-84
    
RWH Power Derating Curve chart 1 For non-inductive windings / divide maximum resistance by 2
2 Lead Diameter: 18 AWG = 0.040" / 20 AWG = 0.032” / 22 AWG = 0.025" / 24 AWG = 0.020"

Axial

RWH MEchanical Characteristics and Dimensions
Package Code F01 F02 F03 F04 F05 F06 F07 F08 F09 F10 F11
Max Resistance (Ω) 1 500 2.5k 2.5k 7.5k 7.5k 10k 10k 12.5k 22k 22k 40k
Max Working Voltage (V) 8.5 20 20 29 29 52 52 60 130 140 140
Power Rating (W)
 U 0.1 0.4 0.4 0.75 0.75 1.0 1.0 1.5 2.5 3.0 3.0
V 0.25 0.5 0.5 0.9 0.9 1.5 1.5 2.0 3.0 3.75 4.0
Dimensions
Inches [mm]
 A
±0.062”
[±1.57mm]		 0.150
[3.81]		 0.250
[6.35]		 0.250
[6.35]		 0.330
[8.38]		 0.330
[8.38]		 0.406
[10.31]		 0.406
[10.31]		 0.350
[8.89]		 0.500
[12.70]		 0.560
[14.22]		 0.500
[12.70]
B
±0.031”
[±0.79mm]		 0.094
[2.39]		 0.085
[2.16]		 0.094
[2.39]		 0.094
[2.39]		 0.094
[2.39]		 0.094
[2.39]		 0.094
[2.39]		 0.156
[3.96]		 0.187
[4.75]		 0.187
[4.75]		 0.250
[6.35]
C 2
±0.002”
[±0.05mm]		 0.018
[0.45]		 0.020
[0.51]		 0.025
[0.64]		 0.020
[0.51]		 0.025
[0.64]		 0.020
[0.51]		 0.025
[0.64]		 0.032
[0.81]		 0.032
[0.81]		 0.032
[0.81]		 0.040
[1.02]
MIL-R-26 / MIL-R-39007           RW-70 RW-70   RW-69 RW-79  
Package Code F12 F13 F14 F15 F16 F17 F18 F19 F20 F21 F22 F23
Max Resistance (Ω) 1 40k 30k 45k 45k 91k 65k 95k 150k 100k 154k 260k 320k
Max Working Voltage (V) 140 140 210 210 360 390 504 650 590 620 850 1500
Power Rating (W)
 U 3.0 3.0 4.0 4.0 5.0 5.0 5.0 7.0 7.0 7.0 10 15
V 4.0 3.5 5.5 5.5 6.5 6.5 6.5 9.0 9.0 9.0 13 -
Dimensions
Inches [mm]
 A
±0.062”
[±1.57mm]		 0.500
[12.70]		 0.500
[12.70]		 0.675
[17.15]		 0.675
[17.15]		 0.875
[22.23]		 0.970
[24.64]		 1.025
[26.04]		 1.375
[34.93]		 1.400
[35.56]		 1.200
[30.99]		 1.780
[45.21]		 1.810
[45.95]
B
±0.031”
[±0.79mm]		 0.250
[6.35]		 0.200
[5.08]		 0.270
[6.68]		 0.270
[6.68]		 0.312
[7.92]		 0.250
[6.35]		 0.312
[7.92]		 0.375
[9.52]		 0.312
[7.92]		 0.312
[7.92]		 0.375
[9.52]		 0.510
[12.95]
C 2
±0.002”
[±0.05mm]		 0.032
[0.81]		 0.032
[0.81]		 0.040
[1.02]		 0.032
[0.81]		 0.040
[1.02]		 0.032
[0.81]		 0.040
[1.02]		 0.040
[1.02]		 0.032
[0.81]		 0.040
[1.02]		 0.040
[1.02]		 0.050
[1.27]
MIL-R-26 / MIL-R-39007         RW-74   RW-67       RW-78  
RWH Axial Power Derating Curve chart 1 For non-inductive windings / divide maximum resistance by 2
2 Lead Diameter: 18 AWG = 0.040" / 20 AWG = 0.032” / 22 AWG = 0.025" / 24 AWG = 0.020" / 25 AWG = 0.018"

Environmental Performance

tringle symbolR
Environmental Performance
(MIL-STD 202)		 Miniature Axial Axial - Characteristic U Axial - Characteristic V
Vibration ±0.1 % + 0.05 Ω ±0.1% + 0.05 Ω ±0.2% + 0.05 Ω
Load Life
 To 1% Depending on
Resistance Value and Size
±0.1% + 0.05 Ω
±3% + 0.05 Ω
Moisture Resistance ±0.2 % + 0.05 Ω ±0.2% + 0.05 Ω ±2% + 0.05 Ω
Dielectric ±0.2 % + 0.05 Ω ±0.2% + 0.05 Ω ±0.2% + 0.05 Ω
Storage ±0.2 % + 0.05 Ω ±0.2% + 0.05 Ω ±0.2% + 0.05 Ω
Shock ±0.2 % + 0.05 Ω ±0.1% + 0.05 Ω ±0.2% + 0.05 Ω
Thermal Shock ±0.2 % + 0.05 Ω ±0.2% + 0.05 Ω ±0.2% + 0.05 Ω
5X Overload (5s) ±0.2 % + 0.05 Ω ±0.2% + 0.05 Ω ±0.2% + 0.05 Ω
CONSTRUCTION NOTES:
  • Centerless ground ceramic core
  • Tinned copper or copperweld leads
  • All welded terminations
  • High Temperature / trivalent / inorganic silicone coating

Packaging Information

MINIATURE AXIAL: Bulk Only

Axial:

Package Code F01 F02 F03 F04 F05 F06 F07 F08 F09 F10 F11 F12 F13 F14 F15 F16 F17 F18 F19 F20 F21 F22
Bulk
Bulk
Only.
No T&R
 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000
10" Reel 2000 2000 2000 2000 2000 2000 2000 500 500 500 500 500 N/A N/A N/A 500 N/A N/A N/A N/A N/A
12" Reel 3000 3000 3000 3000 3000 3000 3000 1500 1500 1000 1000 1000 500 500 500 1000 500 500 500 500 500
14" Reel 5000 5000 5000 5000 5000 5000 5000 3000 3000 1500 1500 1500 1000 1000 1000 1500 1000 750 750 750 750

* Moisture Sensitivity Level: MSL-1

Available Options (Consult Factory)

  • Special Testing Requirements
  • Special Pulse Requirements

How to Order

RWH Series Part Number Breakdown

Resistor Wirewound Precision SMT

RWF Series
  Ask about this product   Available in PDF
Johanson’s Surface Mount Precision Wirewound Resistor (RWF Series) features ultra-tight tolerance to ± 0.01% and exhibits a temperature coefficient of as low as ± 20ppm/°C. This series offers options for low inductance windings, has good pulse handling capability and UL94-V0 flameproof protection. The small-profile design of this resistor helps satisfy the growing demand for new high density boards fabricated with automated pick and place equipment. Resistance value goes as low as 0.005 ohms, and non-inductive windings are available.
Resistor Wirewound Precision

KEY FEATURES:

  • Resistance from 0.005 to 50kOhms
  • Precision, Flame Proof and Pulse Withstanding
  • Tolerance to ± 0.01%
  • High Power to 4 Watts
  • Flame Resistant UL 94V-0


  • Superior Surge Handling Capability
  • High Temperature Rating up to 275°C
  • Low Temperature Coefficient to ± 20ppm/°C
  • Non-Inductive Windings available
  • RoHS Compliant

APPLICATIONS:

  • Motor Control
  • Braking Systems
  • Power Supplies
  • Pressure Transducers
PRODUCT SERIES (RWF) RESISTANCE RANGE (Ω) 1 POWER RATING (W) @ 70 °C DIELECTRIC STRENGTH TOLERANCE TEMPERATURE COEFFICIENT TEMPERATURE RANGE INSULATION RESISTANCE
C1 0.01 to 400 0.5
1000 VAC
± 0.01% to
± 5%
  • >10 Ω : ± 20ppm/°C
  • 1 Ω to 10 Ω : ± 50ppm°C
  • <1 Ω : Call Factory
- 55°C to + 275°C
>1000 MOhms / Dry
C2 0.005 to 3k 1
C3 0.01 to 15k 2
C4 0.01 to 25k 3
C5 0.01 to 50k 4
D1 0.005 to 0.01 1
500 VAC
 ± ±1% to
±5%		 ± 200ppm/°C D2 0.005 to 0.07 2 Call Factory For Lower
D2 0.005 to 0.07 2

1 For non-inductive windings, divide max resistance by 2

Maximum Working Voltage equation
Power Degrating Curve

Mechanical Characteristics

RWF MEchanical Characteristics and Dimensions Lead Thickness 0.006 [.015mm] Tolerances ±0.002” [±0.05mm]
Package Code C1 C2 C3 C4 C5 D1 D2
Dimensions
Inches [mm]
 A (Tolerances)
±0.015” [±0.4mm]
0.190 [4.83]
0.260 [6.60]
0.450 [11.43]
0.625 [15.83]
0.820 [20.83]
0.260 [6.60]
0.450 [11.43]
B (Tolerances)
±0.015” [±0.4mm]
0.130[ 3.30]
0.155 [3.94]
0.250 [6.35]
0.270 [6.86]
0.295 [7.49]
0.155 [3.94]
0.250 [6.35]
C (Tolerances)
±0.015” [±0.4mm]
0.110 [2.79]
0.125 [3.18]
0.180 [4.57]
0.250 [6.35]
0.305 [7.75]
0.100 [2.54]
0.100 [2.54]
D (Tolerances)
±0.015” [±0.4mm]		 .060 [1.52]
0.070[1.78]
0.120 [3.05]
0.120 [3.05]
0.150 [3.81]
0.070 [1.79]
0.120 [3.05]
E (Tolerances)
±0.015” [±0.4mm]]
0.040 [1.02]
0.070 [1.78]
0.100 [2.54]
0.135 [3.43]
0.190 [4.83]
0.070 [1.79]
0.100 [2.54]
Stand-Off
Inches [mm]
 E (Tolerances)
±0.015” [±0.4mm]
0.100 [2.54]
0.120 [3.05]
0.190 [4.83]
0.150 [3.81]
0.245 [6.22]
0.120 [3.05]
0.190 [4.83]
Height (Tolerances)
±0.005”[±0.13mm]
0.005 [0.13]
0.005 [0.13]
0.005 [0.13]
0.005 [0.13]
0.005 [0.13]
0.005 [0.13]
0.005 [0.13]
Solder Pad
Inches [mm]
 Width (Tolerances)
±0.015” [±0.4mm]
0.062 [1.57]
0.096 [2.44]
0.150 [3.81]
0.200 [5.08]
0.220 [5.59]
0.096 [2.44]
0.150 [3.81]
Height (Tolerances)
±0.015” [±0.4mm]
0.100 [2.54]
0.150 [3.81]
0.200 [5.08]
0.220 [5.59]
0.250 [6.35]
0.150 [3.81]
0.200 [5.08]
Length (Tolerances)
±0.015” [±0.4mm]
0.250 [6.35]
0.070 [1.78]
0.540 [13.72]
0.700 [17.78]
0.337 [8.56]
0.337 [8.56]
0.540 [13.72]

Environmental Performance

Environmental Performance (MIL-STD 202)
tringle symbolR Maximum
Load Life
±1% + 0.05 Ω
Moisture Resistance
Dielectric
±0.5% + 0.05 Ω
Storage
Shock
±0.5% + 0.05 Ω
Thermal Shock
5X Overload (5s)
Resistance to Heat Solder (260C, 10s)

Packaging Information

Package Code C1 C2 C3 C4 C5 D1 D2
Reel/Tape Width [mm] 12 16 24 24 32 16 24
Small 650 600 250 125 180 600 250
Large 3000 2000 1000 500 500 2000 1000
Humidity Packaging Notes:
Moisture Barrier Bags (MBB) are used to package surface mount components. These bags include a dessicant and a Humidity Indicator Card to monitor humidity levels. All bags are marked with Moisture-Sensitive Identification Labels. A Moisture Sensitivity Level (MSL) rating of 2 (1-year floor life) applies to the Johanson RWF Series.

Available Options

  • Special Testing Requirements
  • Special Pulse Requirements

How to Order

RWF Series Part Number Breakdown