RARA ELECTRONICS COMPANY-IRV/IRH Specifications

IRH "F" SERIES
PRECISION HIGH POWER
METAL CLAD SHUNTS

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INTRODUCTION

Precision Metal Clad Resistors are designed with four terminals to isolate voltage and current.
This enables very precise current measurement. These units exhibit a high load capacity as
well as excellent accuracy and low inductance. The simple four port Kelvin design and heavy
copper terminals ensure easy installation on large current bus bars. Applications include:
Battery manufacturing test jigs, current detection in precise power sources, constant current
sources, industrial power conversion circuits, HEVs, fuel cells and constant electronic loads

GENERAL SPECIFICATIONS

Model

Rated
Current [A]

Rated
Voltage [V]

Resistance Value[Ω]

Tolerance
[%]

Mass
[g]

IRH300F

500

100 mV

0.2000 m

B [±0.1]

D [±0.5]

F [±1.0]

1300

400

100 mV/50mV

0.2500m/0.1250m

1180

300

0.3333m/0.1666m

1100

IRH200F

250

100 mV

0.4000m

680

200

0.5000m

150

0.6666m

100

1.0000m

IRH100F

75

1.3333m

310

IRH80F

50/75

2.0000m/1.3333m

200

GENERAL SPECIFICATIONS

Temperature Range

-55C to +110C

Insulation Resistance

100MΩ minimum

Dielectric Withstanding Voltage

AC 500V for 1 min.

Temp. Coefficient

Max. 15ppm/C [20C and 60C]; Max. 30ppm/C [20C and 60C]

Short Time Overload

[±0.3%]

5 X Power rating 5 sec.

Moisture Resistance

[±0.5%]

40C, 95% RH, DC100V case to terminal, 500 hours

Thermal Shock

[±0.2%]

65C 30 minutes, +90C 30 min. 25 cycles

Vibration

[±0.2%]

10Hz-55Hz-10Hz(1 minute), 2 h. each direction

Moisture Load Life

[±0.5%]

40C, 95% RH, 0.1XPower rating 1.5 h. on, 30 min. off, 500 h.

Load Life

[±0.5%]

Power rating 1.5 h. on, 30 min. off, 500 hours

Stability

[±0.1%]

Battery testing time, 1hour

DIMENSIONS

Model

L1±1.5

L2±1.5

L3±2

W1±0.5

W2±0.5

H±0.5

IRH 300F

196

215

275

60

40

30

IRH 200F

146

165

225

60

40

30

IRH 100F

152

165

185

41

22

IRH 80F

137

150

170

41

22

ORDERING PROCEDURE EXAMPLE

Model	Rated Current [A]	Rated Voltage [V]	Resistance Value[Ω]	Tolerance [%]	Mass [g]
IRH300F	500	100 mV	0.2000 m	B [±0.1] D [±0.5] F [±1.0]	1300
	400	100 mV/50mV	0.2500m/0.1250m		1180
	300	100 mV/50mV	0.3333m/0.1666m		1100
IRH200F	250	100 mV	0.4000m		680
	200		0.5000m
	150		0.6666m
	100		1.0000m
IRH100F	75		1.3333m		310
IRH80F	50/75		2.0000m/1.3333m		200

Temperature Range		-55C to +110C
Insulation Resistance		100MΩ minimum
Dielectric Withstanding Voltage		AC 500V for 1 min.
Temp. Coefficient		Max. 15ppm/C [20C and 60C]; Max. 30ppm/C [20C and 60C]
Short Time Overload	[±0.3%]	5 X Power rating 5 sec.
Moisture Resistance	[±0.5%]	40C, 95% RH, DC100V case to terminal, 500 hours
Thermal Shock	[±0.2%]	65C 30 minutes, +90C 30 min. 25 cycles
Vibration	[±0.2%]	10Hz-55Hz-10Hz(1 minute), 2 h. each direction
Moisture Load Life	[±0.5%]	40C, 95% RH, 0.1XPower rating 1.5 h. on, 30 min. off, 500 h.
Load Life	[±0.5%]	Power rating 1.5 h. on, 30 min. off, 500 hours
Stability	[±0.1%]	Battery testing time, 1hour

Model	L1±1.5	L2±1.5	L3±2	W1±0.5	W2±0.5	H±0.5
IRH 300F	196	215	275	60	40	30
IRH 200F	146	165	225	60	40	30
IRH 100F	152	165	185	41		22
IRH 80F	137	150	170	41		22