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Resistor Metal Element Current Sense

RMC Series

  Ask about this product   Available in PDF
The metal element current sense resistor is an economical bare element. This high current resistor is rated at 1Watt, 3Watts and 5Watt and features a resistance range from 0.005 Ohms to 0.1 ohms. The element of the current sense resistors has a temperature coefficient of ±20ppm/°C and the tolerances are at ±1% and ±5%. The metal element current sense resistor design allows for maximum cooling via airflow, thus reducing the heat that goes into the PCB. Additionally, the form factor of this resistor is designed to allow for optimum current-sensing capability in compact electrical circuits.
Resistor Metal Element Current Sense Product Image

KEY FEATURES:

  • Resistances from 0.005 to 0.100 Ohms
  • Low Inductance (<10nH)
  • Tolerance to ± 1%
  • Resistance Wire TCR: ± 20ppm/ºC
  • For Current Sensing and Shunt Applications
  • All Welded Construction
  • Economical Bare Metal Element
  • RoHS Compliant

APPLICATIONS:

  • Base Station
  • Power Inverters
  • Current Sensing
  • Lightning Pulse Survival

PRODUCT SUMMARY

PRODUCT SERIES (RMC) POWER RATING @ 85ºC (W) RESISTANCE (Ω) 1 TOLERANCES
J1 1 0.005, 0.01, 0.02, 0.025, 0.03, 0.04, 0.05, 0.1 ± 1% / ± 5%
J2 3 0.005, 0.01, 0.015, 0.02, 0.025, 0.03, 0.04, 0.05, 0.1 ± 1% / ± 5%
J3 5 0.005, 0.01, 0.015, 0.02, 0.025, 0.03, 0.05, 0.1 ± 1% / ± 5%

1 Contact Factory for other resistances

Resistor Metal Element Current Sense Power Derating Curve graph

Mechanical Characteristics

Resistor Metal Element Current Sense Dimensions
Package Code J1 J2 J3
Dimensions
Inches [mm]
H
 0.200 [5.08]
(Tolerances) ±0.100" [±2.54mm]		 1.0 [25.40mm] Max 1.0 [25.40mm] Max
L (Tolerances)
+0.040 / -0.020” [+1.02 / 0.51mm]
 0.450 [11.43mm] 0.600 [15.24mm] 0.800 [20.32mm]
D (Tolerances)
±0.002” [±0.05mm]
 0.040 [1.02mm] 0.040 [1.02mm] 0.040 [1.02mm]
W (Tolerances)
+0.010 / -0.005 [+0.25 / -0.13mm]
 0.065 [1.65mm] 0.065 [1.65mm] 0.065 [1.65mm]
A (Tolerances)
±0.030” [±0.8mm]
 0.125 [3.18mm] 0.125 [3.18mm] 0.125 [3.18mm]

Packaging Information

Package Code
 J1 J2 J3
Standard Package Quantities
 250 (Bulk Only)

* Moisture Sensitivity Level: MSL-1

Available Options (Consult Factory)

  • Special Testing Requirements

How to Order

Resistor Metal Element Current Sense Part Number Breakdown

Resistor Thick Film, High Temperature

RKS Series
  Ask about this product   Available in PDF
This family of high resistance (10M Ohms to 1 Tera Ohms) resistors employs a thick film resistive element and is designed for long term stability and low TCR (temperature coefficient of resistance) which are compatible with high volume SMT applications. TCR’s as low as +/-25ppm and tolerances as tight as +/-1% are available.
Standard EIA size packages 0402, 0603, 0805, 1206, 2512 and 4020 can handle power up to 2 Watts. These are non-magnetic resistors and thus are well suited for nonmagnetic applications.
For resistors operating in high temperature environments, we have two temperature options up to +155C or +300C. Their platinum silver terminations are designed are compatible with soldering, epoxy bonding, or wire bonding applications. The wide range of electrical and mechanical characteristics allow for design flexibility.
We can design our high temperature resistors for specific voltage requirements by trimming these thick film resistors. Contact our applications engineers to discuss high voltage or high temp ( +300C) applications.
Resistor Thick Film, High Temperature Product Image

KEY FEATURES:

  • Resistances from 10M to 1T Ohms
  • Resistance Tolerances to ± 0.25%
  • Power Rating 0.05 to 2 Watts
  • Non-Magnetic
  • TCR's to ± 25ppm/ºC
  • Special High Temperature Version to 300ºC
  • High Value Thick Film Resistance Element
  • Available in sizes 0402, 0603, 0805, 1206, 1210, 2512, 4020
  • RoHS Compliant

APPLICATIONS:

  • Engine Sensors
  • Surge Protection
  • Data Recorders
  • Temperature Sensors

PRODUCT SUMMARY:
PRODUCT SERIES (RKS) SIZE POWER RATING (W) 1 WORKING VOLTAGE (VAC) TEMPERATURE RANGE 2
TRIMMED UNTRIMMED (> 5%)
RKS07 0402 0.050 30 60
  • - 55°C to + 155°C (Standard Version)
  • - 55°C to + 300°C (High Temperature Version TCR valid + 25°C to + 125°C )
RKS14 0603 0.1 75 150
RKS15 0805 0.125 100 200
RKS18 1206 0.25 200 400
RKS41 1210 0.35 300 600
RKS20 2512 1.00 1500 2000
RKS21 4020 2.00 4000 6000

1 Solder Pads must have sufficient heat conduction
2 See Power Derating Curve

  • TEMPERATURE COEFFICIENT: ± 25ppm/ºC to ± 3000ppm/ºC
  • TOLERANCE RANGE: ± 0.25% to ± 30%
Resistor Thick Film, High Temperature Power Derating Curve

Electrical Characteristics

Package Size Tolerances Available ( % )
Temperature Coefficients Available ( ± ppm/°C ) 2
Voltage Coefficients Available ( ppm / V ) 2
Resistance Ranges ( Ω )
10M - 100M >100M - 500M >500M - 1G >1G - 10G >10G - 100G >100G - 1T
0402 5 to 20%
50, 100
500ppm/V		 5% to 20%
100, 250
1000ppm/V		 5% to 20%
250, 500
1000ppm/V		 10% to 30%
1000, 2000
2000ppm/V		 10% to 30%
2000, 3000
5000ppm/V		 Contact Factory
0603 1 to 20%
50, 100
500ppm/V		 2% to 20%
100, 250
500ppm/V		 5% to 20%
250, 500
1000ppm/V		 5% to 30%
500, 1000
2000ppm/V		 10% to 30%
2000, 3000
5000ppm/V		 Contact Factory
0805 0.5 to 20%
50, 100
500ppm/V		 2% to 20%
100, 250
500ppm/V		 5% to 20%
250, 500
500ppm/V		 5% to 20%
500, 1000
1000ppm/V		 10% to 30%
1000, 2000
3000ppm/V		 -
1206 0.5% to 20%
25, 50, 100
250ppm/V		 2% to 20%
50, 100, 250
500ppm/V		 5% to 20%
100, 250
500ppm/V		 5% to 20%
500, 1000
500ppm/V		 10% to 30%
1000, 2000
1000ppm/V		 -
1210 0.5% to 20%
25, 50, 100
25ppm/V		 2% to 20%
50, 100, 250
250ppm/V		 5% to 20%
100, 250
250ppm/V		 5% to 20%
250, 500
250ppm/V		 5% to 20%
500, 1000
500ppm/V		 10% to 30%
1000, 2000
2000ppm/V
2512 1 0.5% to 20%
25, 50, 100
25ppm/V		 1% to 20%
25, 50, 100
50ppm/V		 1% to 20%
100, 250
50ppm/V		 2% to 20%
100, 250
100ppm/V		 5% to 20%
250, 500
250ppm/V		 10% to 30%
500, 1000
1000ppm/V
4020 1 0.25% to 10%
25, 50, 100
10ppm/V		 0.5% to 20%
25, 50, 100
25ppm/V		 1% to 20%
25, 50, 100
25ppm/V		 2% to 20%
50, 100
50ppm/V		 5% to 30%
100, 250
100ppm/V		 10% to 30%
500, 1000
500ppm/V

1 TCR in ppm/K; +25°C to +125°C; TCR below standard TCR (highest value) and values >100G; +25°C to +85°C
2 VCR: typical values, all negative, not for all TCR values available

Environmental

Specification Value
Solderability 250°C, 3s
Max Soldering Temperature 260°C, 10s
Climatic Category 55 / 155 / 56

 

Long Term Stability Max Triangle symbol for Long Term Stability for Thick film resistorR
<1 G Ω 1 G W - 10 G Ω >10 G Ω
Storage 125°C, 1000h <1% <2% <5%
Load Life 70°C, 1000h <0.5% <1% <2%
Maximum Voltage, 1000h <0.5% <1% <2%

Mechanical Characteristics

Resistor Thick Film, High Temperature Dimensions
Package Size
Dimensions
L (Length)
Inches [mm]
EB (End Band)
Inches [mm]
W (Width)
Inches [mm]
T (Thickness)
Inches [mm]
0402 0.037 ±0.002
[ 0.95 ±0.05 ]		 0.004 +0.004 / -0.002
[ 0.1 +0.10 / -0.05 ]		 0.018 ±0.002
[ 0.48 ±0.10 / -0.05 ]		 0.012 ±0.002
[ 0.3 ±0.05 ]
0603 0.060 +0.006 / -0.002
[ 1.5 +0.15 / -0.05 ]		 0.008 +0.008 / -0.004
[ 0.2 +0.2 / -0.1 ]		 0.030 +0.008 / -0.002
[ 0.8 +0.15 / -0.05 ]		 0.016 +0.006 / -0.002
[ 0.4 +0.15 / -0.05 ]
0805 0.080 +0.006 / -0.002
[ 2.0 +0.15 / -0.05 ]		 0.012 +0.008 / -0.004
[ 0.3 +0.2 / -0.1 ]		 0.050 +0.006 / -0.002
[ 1.25 +0.15 / -0.05 ]		 0.016 +0.006 / -0.002
[ 0.4 +0.15 / -0.05 ]
1206 0.126 +0.006 / -0.002
[ 3.2 +0.15 / -0.05 ]		 0.012 +0.008 / -0.004
[ 0.3 +0.2 / -0.1 ]		 0.060 +0.008 / -0.002
[ 1.5 +0.2 / -0.05 ]		 0.016 +0.006 / -0.002
[ 0.4 +0.15 / -0.05 ]
1210 0.126 +0.006 / -0.002
[ 3.2 +0.15 / -0.05 ]		 0.032 ±0.008
[ 0.8 ±0.2 ]		 0.098 +0.008 / -0.002
[ 2.5 +0.2 / -0.05 ]		 0.020 +0.006 / -0.002
[ 0.5 +0.15 / -0.05 ]
2512 0.250 +0.006 / -0.002
[ 6.3 +0.15 / -0.05 ]		 0.035 ±0.008
[ 0.9 ±0.2 ]		 0.138 +0.008 / -0.002
[ 3.5 +0.2 / -0.05 ]		 0.024 +0.006 / -0.002
[ 0.6 +0.15 / -0.05 ]
4020 0.400 +0.006 / -0.002
[ 10.2 +0.15 / -0.05 ]		 0.035 ±0.008
[ 0.9 ±0.2 ]		 0.200 +0.008 / -0.002
[ 5.1 +0.2 / -0.05 ]		 0.024 +0.006 / -0.002
[ 0.6 +0.15 / -0.05 ]

Packaging Information

Bulk or Blistertape to IEC 60286-3
  • Tape width 8mm / Reel Diameter 180 or 330mm
  • Minimum quantity Bulk / 100 pieces per value (30 pieces per value for sizes 4020 and 2512)
  • Minimum quantity Tape & Reel / 500 pieces per value
    (Note: Except size 0402 / 1000 pieces per value)

* Moisture Sensitivity Level: MSL-1

Available Options (Consult Factory)

  • Special Testing Requirements

How to Order

High voltage Resistor Thick Film, High Temperature Part Number Breakdown

Resistor High Power Low Inductance

RHX Series
  Ask about this product   Available in PDF
The RHX Series of ultra-precision resistors is manufactured with either thin or thick film technology based on resistance value. Encased in traditional transistor packaging to maximize heat transfer, our ultra-high precision resistors have been optimized in the widely used standard transistor packages TO-220 and TO-247.
Resistances are available from 0.02 Ohm up to 51k Ohm. This series features high power ratings of 35, 50 and 100 Watts. These power ratings combined with the small, thin profile design makes these pulse withstanding resistors an excellent choice for your high density, compact applications. Circuit designs with high stability requirements will benefit from the low resistance drift (Low TCR) of these ultra-high precision resistors.
Contact us for special requirements.
Resistor High Power Low Inductance Product Image

KEY FEATURES:

  • Resistances from 0.02 to 51K Ohms
  • High Stability Film Resistance Elements
  • Rated Power of 35, 50 and 100 Watts
  • TO-220 and TO-247 Housing
  • Resistance tolerance of ± 0.1% or ± 1%
  • Low Inductance of <10nH for RHXH1 and RHXH2; <50nH for RHXH3
  • RoHS Compliant

APPLICATIONS:

  • Power Inverters
  • Power Supplies
  • Engine Sensors
  • Temperature Sensors

PRODUCT SUMMARY:
PRODUCT SERIES (RHX) RESISTANCE RANGE (Ω) 3 POWER RATING (W) THERMAL RESISTANCE TOLERANCES
MIN MAX HEATSINK 1 FREE AIR 2
RHXH1 0.02 51K 35 1 3.3°C/W ± 1% (R≥0.1Ω) ± 5%
RHXH2 0.02 51K 50 1 2.3°C/W ± 1% ( R≥0.1Ω) ± 5%
RHXH3 0.02 51K 100 3 1.3°C/W ± 1% ( R≥0.10Ω ) ± 5%

TEMPERATURE COEFFICIENTS:

  • ± 50ppm/°C ( R≥10Ω )
  • ± 100ppm/°C ( 0.1Ω ≤ R < 10Ω )
  • ± 250ppm/°C ( R < 0.1Ω )

1 Power Rating based on 25°C Flange Temperature
2 Power Rating based on 25°C Ambient Temperature
3 Contact Factory for Higher or Lower Values

Electrical Characteristics

Electrical Characteristics RHXH1 & RHXH2 Values RHXH3 Value
Maxiumum Current 25A -
Inductance <10nH (At the Standoff) -
Insulation Resistance >1000 Megohm >1000 Megohm
Dielectric Strength 2000 VAC 2500 VAC
Temperature Range -55°C to +155°C -55°C to +175°C
Maximum Working Voltage Maximum Working Voltage Calculation for RHXH1 & RHXH2 Values Maximum Working Voltage Calculation for RHXH3 Value
Resistor High Power Low Inductance Series Derating Curve
RHXH1 & RHXH2 POWER RATING NOTES:
  • H1 and H2 High Power Low Inductance Resistors must be attached to a suitable heatsink. Without a heatsink, the maximum power rating is 1W.
  • The maximum internal resistor temperature is 155°C.
  • Use the following formula to specify an appropriate heatsink:
RHXH3 POWER RATING NOTES:
  • H3 High Power Low Inductance Resistors must be attached to a suitable heatsink.
  • The maximum internal resistor temperature is 155°C.
  • Use the following formula to specify appropriate heatsink:
Thermal Resistance of Heatsink Calculation Explination

RHXH1 & RHXH2

RHXH1 and RHXH2 Mounting Notes Diagram
MOUNTING NOTES:
  • H1 and H2 High Power Low Inductance Resistors must be attached to a suitable heatsink.
  • Use thermal grease to mount resistor to a clean, flat surface.
  • Use a compression washer to provide 150 to 300 pounds ( 665 to 1330N ) of mounting force.
  • Torque mounting screw to 8 in-lbs ( 0.9 N-m ).
  • Mounting tab is isolated from both pins.

RHXH3

RHXH3 Mounting Notes Diagram
MOUNTING NOTES:
  • H3 High Power Low Inductance Resistors must be attached to a suitable heatsink.
  • Use thermal grease to mount resistor to a clean, flat surface.
  • Use a compression washer to provide 150 to 300 pounds ( 665 to 1330N ) of mounting force.
  • Torque mounting screw to 8 in-lbs ( 0.9 N-m ).
  • Back plate is isolated from both pins.

Packaging Information

  Triangle symbolR  
Environmental Performance RHXH1 RHXH2 RHXH3 Test Conditions
Humidity Resistance ±1% + 0.05Ω 40°C, 90-95% RH, DC 0.1W, 1000 hr
Load Life ±1% + 0.05Ω 25°C, 90 min ON, 30 min OFF, 1000 hr
Temperature Cycle ±0.25% + 0.05Ω -55°C for 30 min, +155°C for 30 min, 1000 hr
Vibration ±0.25% + 0.05Ω IEC60068-2-6
Solder Heat ±0.1% + 0.05Ω +350°C, 3s

* Moisture Sensitivity Level: MSL-1

Available Options (Consult Factory)

  • Special Testing Requirements

How to Order

Resistor High Power Low Inductance Part Number Breakdown

Resistor Metal Element Current Sense SMT

RNC Series
  Ask about this product   Available in PDF
Our RNC Series Current Sense resistors utilize a precision metal alloy element to control the high currents. These products are available in 3 standard EIA sizes for high volume SMT placement and are designed for high current low voltage applications. Resistances are available form 0.5 milliohms up 10 milliohms with power ratings up to 3 Watts. The compact design makes them a great choice for applications where size constraints and performance are critical.
Resistor Metal Element Current Sense SMT Product image

KEY FEATURES:

  • Resistances from 0.5 mOhm to 15 mOhm
  • Resistance Tolerances to ± 1%
  • Customized Resistance available
  • Power Rating up to 3 Watts
  • TCR's to ± 50 ppm/ºC
  • Available in sizes 1206 / 2010 / 2512
  • RoHS Compliant

APPLICATIONS:

  • Engine Sensors
  • Surge Protection
  • Data Recorders
  • Temperature Sensors

PRODUCT SUMMARY:
PRODUCT SERIES (RNC) POWER RATING (W) at 80ºC RESISTANCES (mΩ) TCR (ppm/ºC) TOLERANCES TEMPERATURE RANGE
RNC18A
1
0.5 - 10
 ± 50
± 200 (0.5 mΩ)
1%
3%
5%
-55ºC to +170ºC
RNC19B
1.5
0.5 - 10
 ± 50
± 100 (0.5 mΩ)
RNC20A 1
1
0.5, 0.75, 1, 1.5, 2, 11, 12, 13, 14, 15 ± 50
6, 6.5, 7 ± 75
4, 5, 10 ± 100
2.5, 3 ± 150
RNC20C 2
2
0.5, 0.75, 1, 1.5, 2, 6.5, 7, 8, 9, 10 ± 50
6, 6.5, 7 ± 75
4, 5, 10 ± 100
2.5, 3 ± 150
RNC20D 3 2.5 4, 4.5, 5, 6 ± 50
RNC20E 3
3
 0.5, 0.75 ± 100
1, 1.5, 2, 2.5, 3, 3.5 ± 50
Resistor Metal Element Current Sense SMT Calculation for Maximum operating voltage

1 11, 12, 13, 14, 15 mΩ - coating is green
2 6.5, 7, 8, 9, 10 mΩ at 50ppm - coating is green
3 All values contain green coating

Electrical & Mechanical Characteristics

Package Code Power Rating (W) Resistance Value (Ω) L (Length) [mm] EB (End Bend) [mm] W (Width) [mm] T (Thickness) [mm]
RNC18
1
 0.5 3.20 ±0.25 1.35 ±0.25 1.60 ±0.10 0.60 ±0.20
0.75 3.20 ±0.25 1.23 ±0.25 1.60 ±0.10 0.60 ±0.20
1, 4, 5, 6 3.20 ±0.25 1.10 ±0.25 1.60 ±0.10 0.60 ±0.20
2, 3, 10 3.20 ±0.25 0.60 ±0.25 1.60 ±0.10 0.60 ±0.20
7, 8, 9 3.20 ±0.25 0.90 ±0.25 1.60 ±0.10 0.60 ±0.20
RNC19
1.5
 0.5 5.08 ±0.25 2.17 ±0.25 2.54 ±0.15 0.60 ±0.20
0.75 5.08 ±0.25 2.04 ±0.25 2.54 ±0.15 0.60 ±0.20
1 5.08 ±0.25 1.84 ±0.25 2.54 ±0.15 0.60 ±0.20
2, 6, 7, 8 5.08 ±0.25 1.54 ±0.25 2.54 ±0.15 0.60 ±0.20
3 5.08 ±0.25 1.04 ±0.25 2.54 ±0.15 0.60 ±0.20
4, 5 5.08 ±0.25 1.84 ±0.25 2.54 ±0.15 0.60 ±0.20
9, 10 5.08 ±0.25 1.29 ±0.25 2.54 ±0.15 0.60 ±0.20
RNC20
1
 0.5 6.35 ±0.254 1.30 ±0.38 3.18 ±0.254 1.25 ±0.20
0.75 6.35 ±0.254 1.30 ±0.38 3.18 ±0.254 0.75 ±0.20
1 6.35 ±0.254 1.30 ±0.38 3.18 ±0.254 0.65 ±0.20
1.5 6.35 ±0.254 1.30±0.38 3.18 ±0.254 0.45 ±0.20
2 6.35 ±0.254 1.30 ±0.38 3.18 ±0.254 0.35 ±0.20
2.5 6.35 ±0.254 1.30 ±0.38 3.18 ±0.254 0.65 ±0.20
3 6.35 ±0.254 1.30 ±0.38 3.18 ±0.254 0.55 ±0.20
4 6.35 ±0.254 1.30 ±0.38 3.18 ±0.254 0.45 ±0.20
5 6.35 ±0.254 1.30 ±0.38 3.18 ±0.254 0.35 ±0.20
6 6.35 ±0.254 1.30 ±0.38 3.18 ±0.254 0.32 ±0.20
6.5 6.35 ±0.254 1.30 ±0.38 3.18 ±0.254 0.30 ±0.20
7 6.35 ±0.254 1.30 ±0.38 3.18 ±0.254 0.27 ±0.20
10 6.35 ±0.254 1.30 ±0.38 3.18 ±0.254 0.25 ±0.20
RNC20
w/Green Coating
1 to 3
 0.5 6.35 ±0.25 2.68 ±0.25 3.00 ±0.20 0.60 ±0.20
0.75 6.35 ±0.25 2.48 ±0.25 3.00 ±0.20 0.60 ±0.20
1, 5, 6 6.35 ±0.25 1.93 ±0.25 3.00 ±0.20 0.60 ±0.20
1.5, 6.5, 7 6.35 ±0.25 1.43 ±0.25 3.00 ±0.20 0.60 ±0.20
2, 3 6.35 ±0.25 1.18 ±0.25 3.00 ±0.20 0.60 ±0.20
4, 4.5 6.35 ±0.25 2.18 ±0.25 3.00 ±0.20 0.60 ±0.20
8 to 15 6.35 ±0.25 1.18 ±0.25 3.00 ±0.20 0.60 ±0.20
Current Sense Resistor Dimensions resistor-metal-element-current-sense SMT Power Derating Curve

Specifications

  Specification  
Test Black Coating Green Coating Test Method
Solderability 95% min. coverage 245 ±5°C for 3 seconds
Temperature Coefficient of Resistance As Spec. +25/-55/+25/+125/+25°C
Dry Heat ± 1.0% ± 1.0% at +170°C for 1000 hrs
Load Life
± 1.0%
± 1.0%
 70 ±2°C, Max. working voltage for 1000 hrs with
1.5 hrs “ON”and 0.5 hrs “OFF”
Short Time Overload ± 0.5% ± 1.0% 5x rated power for 5 seconds
Resistance to Soldering Heat ± 0.5% ± 1.0% 260 ±5°C for 10 seconds
Thermal Shock ± 0.5% ± (0.5% + 0.05Ω) -55°C ~ 150°C, 100 cycles

Note: Green coating cannot be used in solder bath

Packaging Information

Package Code RNC18 (Reel Size 1206) RNC19 (Reel Size 2010) RNC20 (Reel Size 2512)
Quantity 2000
Type Embossed Tape

* Moisture Sensitivity Level: MSL-1

Available Options (Consult Factory)

  • Special Testing Requirements

How to Order

Resistor Metal Element Current Sense SMT Part Number Breakdown