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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

Johanson Dielectric’s Thin Film Current Sense Resistors or RNC Series offer excellent stability at high frequencies and are suitable for operating high voltages. They feature very low resistances, high power ratings of up to 3 watts, and customized resistances to fit a variety of power electronic designs. This Resistor Thin Film Current Sense series is available in sizes 1206, 2010 and 2512.

Resistor Thin Film Current Sense
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 Thin Film Current Sense Calculation for Maximum operating current

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

Resistor Thin Film Current Sense Dimensions

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

RNC 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

RNP Calculations
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 RNC Series Part Number Breakdown

This datasheet is subject to change without notice.