IET LABS, INC. in the GenRad Tradition

www.ietlabs.com

TEL: (516) 334-5959 • (800) 899-8438 • FAX: (516) 334-5988

SCA Series

Page 1 of 3

Standard Capacitance

Reference or Working Standards

SCA Data Sheet/ Dec. 2022

Environment:

Operating:

+10 to +40°C, <80% RH

Storage:

-20 to +65°C

Calibration Conditions:

Calibrated at 23°C, <50% RH, Traceable to SI

Transit Case:

(see page 3)

High-stability, cost-effective capacitance standards

with low temperature coefficients, low losses, and a

wide range of values.

Specifications

Nominal

value

Model

Adjustment

to nominal

Temperature

coefficient

(ppm/°C)

Calibration

Conditions

Dissipation

(typical)

Stability

(per year)

Max voltage

Terminals

Capacitor type

Peak (V) Max Frequency

1 pF

SCA-1pF

±0.1 pF

+20 to +40

£ 15 Vac

Parallel Model

1 kHz

AH2700A or

equivalent

0.002

±0.1 pF

500

10 kHz

2 bnc

connectors

+ gnd

Air capacitors

1.9 pF

SCA-1.9pF

±0.1 pF

+20 to +40

0.002

±0.1 pF

500

10 kHz

10 pF

SCA-10pF

±0.1 pF

+20 to +40

0.002

±0.1 pF

500

10 kHz

19 pF

SCA-19pF

±0.1 pF

+20 to +40

0.001

±0.1 pF

500

10 kHz

100 pF

SCA-100pF

±0.1 pF

20

0.0005

±0.1 pF

500

10 kHz

Silvered mica

mechanically stabilized

hermetically sealed

190 pF

SCA-190pF

±0.1 pF

20

0.0005

±0.1 pF

500

10 kHz

1.0 nF

SCA-1nF

±0.02%

20

0.0003

±100 ppm

500

10 kHz

1.9 nF

SCA-1.9nF

±0.02%

20

0.0003

±100 ppm

500

10 kHz

10 nF

SCA-10nF

±0.02%

20

0.0003

±100 ppm

500

10 kHz

2 binding

posts + gnd

19 nF

SCA-19nF

±0.02%

20

0.0003

±100 ppm

500

10 kHz

100 nF

SCA-100nF

±0.02%

20

0.0003

±100 ppm

500

10 kHz

190 nF

SCA-190nF

±0.02%

20

0.0003

±100 ppm

500

10 kHz

1 µF

SCA-1µF

±0.02%

20

0.0002

±100 ppm

500

10 kHz

1.9 µF

SCA-1.9µF

±0.02%

20

1 Vac

Series Model

1 kHz

0.0002

±100 ppm

100

10 kHz

4 binding

posts + gnd

Metallized

polypropylene sulfide

hermetically sealed

5 µF

SCA-5µF

±0.02%

±50

0.0005

±200 ppm

50

10 kHz

10 µF

SCA-10µF

±0.04%

±50

1 Vac

Series Model

100 Hz

(1 kHz data included)

0.0005

±200 ppm

22 Vrms†

1 kHz

19 µF

SCA-19µF

±0.04%

±50

0.0005

±200 ppm

44 Vrms†

1 kHz

100 µF

SCA-100µF

±0.05%

±50

0.001

±500 ppm

22 Vrms†

1 kHz

190 µF

SCA-190µF

±0.05%

±50

0.001

±500 ppm

22 Vrms†

1 kHz

1,000 µF

SCA-1000µF

±0.4%

-150

0.001

±500 ppm

22 Vrms†

1 kHz

5,000 µF

SCA-5000µF

±2%

-150

0.001

--

22 Vrms†

1 kHz

Polypropylene

10,000 µF SCA-10000µF

±2%

-150

0.001

--

22 Vrms†

1 kHz

XXX F

SCA-XXX

customer-selected value and power specifications

† Maximum allowable Vrms; subject to maximum Vdc = 50 V and max Vrms = (39000/f) for C = 10 µF;

(26000/f) for C = 19 µF; (13000/f) for C £100µF, where f = frequency (in Hz).

• High-accuracy and stability

• Capacitance values from 1 pF to 10,000 µF

• Custom values available

• Mechanically stabilized capacitors

• Stability: <100 ppm/year

• Excellent TC: as low as 10 ppm/°C

• Low loss: D as low as 20 ppm

• SCA-1nF-8588A available for direction connection to the

Fluke 8588A to calibrate the 1 nF capacitance range

Mechanical:

Nominal Values

Dimensions

Weight

1 pF < 1 µF

8.6 cm H x 10.5 cm W x 12.7 cm D

(3.4” x 4.15” x 5”)

0.73 kg (1.6 lb)

1 µF (only)

14.3 cm H x 8.3 cm W x 6.9 cm D

(5.6" x 3.2" x 2.7")

1.1 kg (2.25 lb)

>1 µF £ 190 µF

8.6 cm H x 10.5 cm W x 12.7 cm D

(3.4” x 4.15” x 5”)

0.73 kg (1.6 lb)

1,000 µF

31 cm W x 8.9 cm H x 10.2 cm D

(12.2" x 3.5" x 4")

1.7 kg (3.8 lb)

5,000 µF

53.3 cm W x 27.3 cm H x 44.5 cm D

(21" x 10.75" x 17.5")

27.2 kg (60 lb)

10,000 µF

36.3 kg (80 lb)

SCA-1nF-8588A

12 cm H x 8.6 cm W x 9.5 cm D

(4.75" x 3.4" x 3.75")

0.73 kg (1.6 lb)

SCA Capacitance Standard