IET LABS, INC. in the GenRad Tradition

www.ietlabs.com

TEL: (516) 334-5959 • EMAIL: info@ietlabs.com

High-Accuracy, High-Stability

Resistance Standards

SRL Series

Page 2 of 3

SRL Catalog Dec. 2022

Nominal

Value

Model

Number

Adjustment to

Nominal

Stability per

year (max

change)

Max Resistance

Change 18-28°C

from 23 °C

Max Applied Power

Typical change

at 1 kHz

Terminals

0 ppm change*

1 ppm change**

3 ppm change**

1 mΩ

SRL-0.001

±100 ppm

±50 ppm

25 ppm/°C

<100 ppm

4 bp's + gnd

10 mΩ

SRL-0.01

±5 ppm

±15 ppm

5 ppm/°C

25 mW

50 mW

200 mW

4 bp's + gnd

19 mΩ

SRL-0.019

±5 ppm

±15 ppm

5 ppm/°C

25 mW

50 mW

200 mW

4 bp's + gnd

20 mΩ

SRL-0.02

±5 ppm

±15 ppm

5 ppm/°C

25 mW

50 mW

200 mW

4 bp's + gnd

100 mΩ

SRL-0.1

±5 ppm

±12 ppm

2 ppm/°C

50 mW

100 mW

250 mW

4 bp's + gnd

190 mΩ

SRL-0.19

±5 ppm

±12 ppm

2 ppm/°C

50 mW

100 mW

250 mW

4 bp's + gnd

200 mΩ

SRL-0.2

±5 ppm

±12 ppm

2 ppm/°C

50 mW

100 mW

250 mW

4 bp's + gnd

1 Ω

SRL-1

±2 ppm

±8 ppm

3 ppm tot

175 mW

350 mW

850 mW

4 bp's + gnd

1.9 Ω

SRL-1.9

±2 ppm

±8 ppm

3 ppm tot

175 mW

350 mW

850 mW

4 bp's + gnd

2 Ω

SRL-2

±2 ppm

±8 ppm

3 ppm tot

175 mW

350 mW

850 mW

4 bp's + gnd

10 Ω

SRL-10

±2 ppm

±8 ppm

3 ppm tot

100 mW

200 mW

500 mW

4 bp's + gnd

19 Ω

SRL-19

±2 ppm

±8 ppm

3 ppm tot

100 mW

200 mW

500 mW

4 bp's + gnd

20 Ω

SRL-20

±2 ppm

±8 ppm

3 ppm tot

100 mW

200 mW

500 mW

4 bp's + gnd

25 Ω

SRL-25

±2 ppm

±8 ppm

3 ppm tot

100 mW

200 mW

500 mW

4 bp's + gnd

30 Ω

SRL-30

±2 ppm

±8 ppm

3 ppm tot

100 mW

200 mW

500 mW

4 bp's + gnd

50 Ω

SRL-50

±2 ppm

±8 ppm

3 ppm tot

100 mW

200 mW

500 mW

4 bp's + gnd

100 Ω

SRL-100

±2 ppm

±6 ppm

3 ppm tot

100 mW

200 mW

500 mW

4 bp's + gnd

190 Ω

SRL-190

±2 ppm

±6 ppm

3 ppm tot

100 mW

200 mW

500 mW

4 bp's + gnd

200 Ω

SRL-200

±2 ppm

±6 ppm

3 ppm tot

100 mW

200 mW

500 mW

4 bp's + gnd

350 Ω

SRL-350

±2 ppm

±6 ppm

3 ppm tot

100 mW

200 mW

500 mW

4 bp's + gnd

400 Ω

SRL-400

±2 ppm

±6 ppm

3 ppm tot

100 mW

200 mW

500 mW

4 bp's + gnd

1 kΩ

SRL-1K

±2 ppm

±6 ppm

3 ppm tot

100 mW

200 mW

500 mW

4 bp's + gnd

1 kΩ

SRL-1K-TC

±2 ppm

±6 ppm

2 ppm tot

100 mW

200 mW

500 mW

4 bp's + gnd

1.9 kΩ

SRL-1.9K

±2 ppm

±6 ppm

2 ppm tot

100 mW

200 mW

500 mW

4 bp's + gnd

2 kΩ

SRL-2K

±2 ppm

±6 ppm

2 ppm tot

100 mW

200 mW

500 mW

4 bp's + gnd

4 kΩ

SRL-4K

±2 ppm

±4 ppm

2 ppm tot

100 mW

200 mW

500 mW

4 bp's + gnd

10 kΩ

SRL-10K

±2 ppm

±4 ppm

1.5 ppm tot

100 mW

200 mW

500 mW

4 bp's + gnd

19 kΩ

SRL-19K

±2 ppm

±4 ppm

2 ppm tot

100 mW

200 mW

500 mW

4 bp's + gnd

20 kΩ

SRL-20K

±2 ppm

±4 ppm

2 ppm tot

100 mW

200 mW

500 mW

4 bp's + gnd

100 kΩ

SRL-100K

±2 ppm

±6 ppm

2 ppm tot

100 mW

200 mW

500 mW

<200 ppm

4 bp's + gnd

190 kΩ

SRL-190K

±2 ppm

±8 ppm

2 ppm tot

100 mW

200 mW

500 mW

4 bp's + gnd

200 kΩ

SRL-200K

±2 ppm

±8 ppm

2 ppm tot

100 mW

200 mW

500 mW

4 bp's + gnd

1 MΩ

SRL-1M

±2 ppm

±8 ppm

2 ppm tot

100 mW

200 mW

500 mW

<1000 ppm

2 bp's + gnd

1.9 MΩ

SRL-1.9M

±2 ppm

±9 ppm

3 ppm tot

100 mW

200 mW

500 mW

2 bp's + gnd

2 MΩ

SRL-2M

±2 ppm

±9 ppm

3 ppm tot

100 mW

200 mW

500 mW

2 bp's + gnd

10 MΩ

SRL-10M

±2 ppm

±9 ppm

3 ppm tot

500 V

1000 V

2500 V

<2 %

2 bp's + gnd

19 MΩ

SRL-19M

±2 ppm

±10 ppm

4 ppm tot

1000 V

2000 V

5000 V

NA

2 bp's + gnd

20 MΩ

SRL-20M

±2 ppm

±10 ppm

4 ppm tot

1000 V

2000 V

5000 V

2 bp's + gnd

100 MΩ

SRL-100M

±10 ppm

±20 ppm

5 ppm/°C

2000 V

4000 V

5000 V

2 bp's + gnd + guard

190 MΩ

SRL-190M

±10 ppm

±20 ppm

5 ppm/°C

2000 V

5000 V

2 bp's + gnd + guard

200 MΩ

SRL-200M

±10 ppm

±20 ppm

5 ppm/°C

5000 V

2 bp's + gnd + guard

1 GΩ

SRL-1G

±0.1%

±200 ppm

23 ppm/°C

5000 V

2 bp's + gnd + guard

1.9 GΩ

SRL-1.9G

±0.1%

±200 ppm

23 ppm/°C

5000 V

2 bp's + gnd + guard

2 GΩ

SRL-2G

±0.1%

±200 ppm

23 ppm/°C

5000 V

2 bp's + gnd + guard

10 GΩ

SRL-10G

±0.1%

±500 ppm

25 ppm/°C

5000 V

2 bp's + gnd + guard

19 GΩ

SRL-19G

±0.1%

±500 ppm

25 ppm/°C

5000 V

2 bp's + gnd + guard

20 GΩ

SRL-20G

±0.1%

±500 ppm

25 ppm/°C

5000 V

2 bp's + gnd + guard

100 GΩ

SRL-100G

±0.3%

±500 ppm

25 ppm/°C

5000 V

2 bp's + gnd + guard

190 GΩ

SRL-190G

±0.3%

±500 ppm

25 ppm/°C

5000 V

2 bp's + gnd + guard

200 GΩ

SRL-200G

±0.3%

±500 ppm

25 ppm/°C

5000 V

2 bp's + gnd + guard

1 TΩ

SRL-1T

±0.5%

±500 ppm

50 ppm/°C

5000 V

2 bp's + gnd + guard

1.9 TΩ

SRL-1.9T

±0.7%

±1000 ppm

100 ppm/°C

5000 V

2 bp's + gnd + guard

2 TΩ

SRL-2T

±0.7%

±1000 ppm

100 ppm/°C

5000 V

2 bp's + gnd + guard

XXX Ω

SRL-XXX

customer-selected value and power specifications

* negligible effect of self-heating; do not exceed voltage limits where given.

** non-permanent self-heating change; exceeding power given for 3 ppm change may cause a permanent change in the resistance.

Please contact IET for high power ratings or for use of the SRL above the power listed in the 3 ppm change column.

Standard model

Select from table above

Custom value

SRL-XXX

DMM direct plug-in

Add -DMM at the end of part number

Transit case for SRL units

SRC-100, for 2 units

SRC-10-n, for n units

-N Option

Dual N-type terminal connections with ground terminal to fully shielded

metal case. Inner enclosure can be separately driven with guard voltage.

SPECIFICATIONS

ORDERING INFORMATION