Type ER/ERV Series
A tough silicone coated power
resistor. The coating and marking
are resistant to Trichloroethene VG,
Genklene LV Hot and Cold, Freon
TE, Arklone A, Flourosil E, Freon
TMS, Arklone L Hot and Cold and
Arklone F Hot. If the resistor is in
contact with the PCB the maximum
dissipation to avoid damage to the
PCB may be ascertained by
reference to the hot spot
temperature graph. Vertical
mounting style is available. The ER
series is suited to a wide range of
industrial, control, medical and
consumer applications.
Key Features
■High Power Dissipation
■Tough Silicone Coating
■Special Pulse Styles
Available
■0.5% Tolerance Available
■Resistant to Most
Solvents
■Vertical Mount Styles
Available
■Custom Designs
Welcomed
■Widely Available via
Distribution
Characteristics - ER Series
Electrical
ER74 ER58 ER16 ER17
Power Rating (W) at 40°C: 3W 7W 11W 14W
Power Rating (W) at 70°C: 2.5W 6W 9W 12W
Resistance Range: R03-10K R05 - 20K R13-68K R20-100K
Maximum Element Volts: 100V 200V 500V 750V
Characteristics - ERV Series
Electrical
ERV74 ERV58 ERV16
Power Rating (W) at 20°C*: 3W 7W 11W
Power Rating (W) at 70°C*: 1.5W 3W 5W
Resistance Range: R10-3K9 R10-6K8 R15-27K
Maximum Element Volts: 100V 200V 500V
* When mounted in the horizontal and vertical plane only - inverted mounting may result in heat damage of the PCB
- Consult Technical Department
Power Ratings
Dissipation / Ambient Temperature
Characteristics -
Environmental
Temperature Category: -55°C to 200°C
Humidity Classification: 56 days
Standard Tolerances: ER Series < 1 ohm ± 10% ~ > 1 ohm ± 5%
ERV Series E24 - 5% ~ E12 10%
Tolerances of down to: ± 0.5% are available
Load Life Stability: ± 5%
Temperature Coefficient*: < 1 ohm 0 ± 200ppm/°C maximum
> 1 ohm 0 + 60 ppm/°C typical
*Very low temperature coefficients to ± 20ppm/°C are available to special order
Solderability conforms to: BS 2011 Test 2.1 Ta Solder bath method
(IEC 68-2-20) Wets in < 2 seconds
Termination Robustness: BS 2011 Test 2.1 Ua withstands 0.5 kg tensile load
and double bend with 0.25 kg load
Endurance - 1000hrs @ 200°C: ΔR -0 +2%
Overload: 10 time rated dissipation for 5 seconds ΔR ± 0.5%
Humidity: 56 days/95% R.H./ +_45°C -0 +5%
Temperature Rapid Change: ΔR ± 0.03%
Power Ratings
Hot Spot Temperature @ 40°C
0 20 50 70 100 150 200
Ambient Temperature (°C)
15
12
9
6
3
14
11
7ER17
ER16
ER58
ER74
ER74 ER58 ER16 ER17
Watts
0 2 4 6 8 10121416
Rating (Watts)
400
300
200
100
20
Surface Temperature (°C)
Literature No. 1773212
Issued: 11-08
Dimensions are shown for
reference purposes only.
Dimensions are in
millimetres unless
otherwise specified.
Specifications subject to
change.
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High Power Resistors
Type ER/ERV Series