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IET Labs 1409 Series Standard Capacitance Reference or Working Standard
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IET Labs 1409 Series Standard Capacitance Reference or Working Standard


IET Labs 1409-9706
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 IET Labs 1409-9706
Features:
  • 0.001 µF to 1000 µF
  • ±0.01%/year stability
  • Verify meter and instrumentation calibration
  • Two-to-five terminal configuration, depending
    on model

  Description

Highly stable cost-effective capacitance standards with low temperature coefficient, low losses and a wide range of values.


Figure 1

Change in capacitance as a function of frequency for typical 1409 Capacitors. The 1-kHz value on the plot should be used as a basis of reference in estimating frequency errors.


Figure 2

Dissipation factor as a function of frequency.



  Models, Options, & Accessories


Model Description List Price Sale Price
1409-9706 1409-F Standard Capacitor, 0.001 F (1 nF) - Discontinued - no replacement
1409-9712 1409-L Standard Capacitor, 0.01 F (10 nF) - Discontinued - no replacement
1409-9720 1409-T Standard Capacitor, 0.1 F (100 nF) - Discontinued - no replacement
1409-9725 1409-Y Standard Capacitor, 1.0 F - Discontinued - no replacement
1409-9730 1409 Standard Capacitor, 10 F - Discontinued - no replacement
1409-9735 1409 Standard Capacitor, 100 F - Discontinued - no replacement
1409-9740 1409 Standard Capacitor, 1000 F - Discontinued - no replacement


  Specifications:

Model
Value
Adjustment Accuracy
Dissipation Factor (typical)
Maximum Voltage* (V)
1409-F
1 nF
±0.02%
0.0003
500
1409-L
10 nF
±0.02%
0.0003
500
1409-T
1 nF
±0.02%
0.0003
500
1409-10 µF
1 nF
±0.04%
0.0005
44 Vrms+
1409-100 µF
1 nF
±0.05%
0.001
22 Vrms+
1409-1000 µF
1 nF
±0.4%
0.001
22 Vrms+
1409-X
Custom
**
**
**

* Peak up to 10 kHz.
+ 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 = 100 µF; (9500/f ) for C = 1000 µF, where ƒ = frequency (in Hz).
** Depends on Custom value

 

Calibration Accuracy 100 ppm for 1 nF; 0.01% for 1 µF and under; 0.04% for 100 µF and under; and 0.4% for 1000 µF; At test frequency of 1 kHz for up to 5 µF; 100 Hz for over 5 µF. 2-terminal and 3-terminal measurements are provided.
Stability <0.01% per year.
Temperature Coefficient 20 ppm/°C for 1 µF and under;
-50 ppm/°C for capacitance to 190 µF;
-150 ppm/°C for 1000 µF.
Operating Temperature 10°C to 50°C.
Dissipation Factor 0.01 µF - 1 µF; 0.0003 at 1 kHz;
10 µF; 0.0005; 100 µF; 0.001;
1000 µF; 0.002 at 100 Hz and 120 Hz; 0.02 at 1 kHz.
Series Inductance Typically < 0.06 µH, 0.01 µF - 1 µF.
Series Resistance at 1 MHz 0.02 Ω, 0.01 µF - 0.1 µF; 0.03 Ω, 1 µF.
Frequency Characteristics Varies as √ƒ above 100 kHz. See Figure 1 above.
Leakage Resistance 5,000 ohm-Farads or 100 GΩ, whichever is less.
Max Voltage See table above
Test Conditions (100 Hz, 120 Hz and 1 kHz at 23°C; < 1 µF; 5 - terminal measurement for values 1 µF, 1 MHz or other available.
Capacitor Type Hermetically sealed silvered mica for 100 pF to 1 µF; hermetically sealed polystyrene for 10 µF; hermetically sealed polycarbonate for >10 µF.
Terminals Three binding posts, for values up to 1 µF; Five binding posts, for values over 1 µF.
Dimensions -F/L/T: 10.2 cm H x 8.3 cm W x 5.1 cm D (4.0" x 3.3" x 2.0")
-Y: 14.3 cm H x 8.3 cm W x 6.9 cm D (5.6" x 3.2" x 2.7")
-10 µF/100 µF: 86 cm H x 10.5 cm W x 12.7 cm D (3.4" x 4.15" x 5.0")
-1000 µF: 8.6 cm H x 30.5 cm W x 8.9 cm D (3.4" x 12" x 3.5")
Weight -F/L/T: ~ 0.6 kg (1.25 lb.)
-Y: ~ 1.1 kg (2.25 lb.)
-10 µF/100 µF: ~ 0.4 kg (0.8 lb.)
-1000 µF: ~ 2 kg (4.5 lb.)


   
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