Technical Specifications

For H.V. Compact Series with Average Power Rating 1.0 W - 2.5 W:

RES.

TYPE

DIM.

CODE

OVERALL

DIMENSIONS

VOL.

MAX.

J

MAX.

W

T.T.C.

WT.

A/L

RESISTANCE RANGE

Do

Max

Lo

Max

Lp

Pitch

(v)

   

@25˚C

  

@25˚C

 

(t)

  

  

MIN

  

MAX

UNITS

 

(mm)

(mm)

(mm)

(cm3)

(J)

(W)

(s)

(g)

(cm)

(Ohms)

(Ohms)

AB 912

1104

13

9

4.5 - 6.0

0.4

100

1.00

100

2.0

2.4

1R2

8K2

AB 903

1107

13

12

7.5 - 9.0

0.7

175

1.25

140

2.5

1.4

2R2

15K0

AB 017

1111

13

16

11.5 - 13.0

1.0

250

1.50

165

3.5

0.9

3R3

22K0

AB 892

1114

13

19

14.5 - 16.0

1.3

325

1.75

185

4.0

0.7

4R7

27K0

AJ 149

1117

13

22

17.5 - 19.0

1.6

400

2.00

200

5.0

0.6

5R6

33K0

AB 986

1414

16

19

14.5 - 16.0

2.2

550

2.25

245

6.5

1.1

2R7

18K0

AB 993

1417

16

22

17.5 - 19.0

2.6

650

2.50

260

7.0

0.9

3R3

22K0

NOTES

Vol (v) = Volume of Active Material (cm3)

T. T. C. = Thermal Time Constant (t)  (Seconds)


Maximum Working Voltages (V working)

The Maximum Working Voltage levels  can be derived from the appropriate formulae illustrated in the tables below. An example is shown at the foot of this page.

Waveforms are defined in the usual manner: 1.2 / 50 s indicates a rise time to peak value in 1.2 s and an exponential decay to half amplitude in a total time of 50 s.

AB 912

 

IMPULSE / WAVESHAPE

MAX. WORKING VOLTAGE (kV)

(1 / 10 s)

1.84R x ( -1 + √ ( 1 + 5.0 / R ) )

(1.2 / 50 s)

0.37R x ( -1 + √ ( 1 + 25 / R ) )

(10 / 1000 s)

0.0184R x ( -1 + √ ( 1 + 501 / R ) )

(500 / 5000 s)

0.0037R x ( -1 + √ ( 1 + 2504 / R ) )


AB 903

 

IMPULSE / WAVESHAPE

MAX. WORKING VOLTAGE (kV)

(1 / 10 s)

1.84R x ( -1 + √ ( 1 + 8.8 / R ) )

(1.2 / 50 s)

0.37R x ( -1 + √ ( 1 + 44 / R ) )

(10 / 1000 s)

0.0184R x ( -1 + √ ( 1 + 877 / R ) )

(500 / 5000 s)

0.0037R x ( -1 + √ ( 1 + 4383 / R ) )


AB 017

 

IMPULSE / WAVESHAPE

MAX. WORKING VOLTAGE (kV)

(1 / 10 s)

1.84R x ( -1 + √ ( 1 + 13.8 / R ) )

(1.2 / 50 s)

0.37R x ( -1 + √ ( 1 + 69 / R ) )

(10 / 1000 s)

0.0184R x ( -1 + √ ( 1 + 1377 / R ) )

(500 / 5000 s)

0.0037R x ( -1 + √ ( 1 + 6887 / R ) )


AB 892

 

IMPULSE / WAVESHAPE

MAX. WORKING VOLTAGE (kV)

(1 / 10 s)

1.84R x ( -1 + √ ( 1 + 17.5 / R ) )

(1.2 / 50 s)

0.37R x ( -1 + √ ( 1 + 88 / R ) )

(10 / 1000 s)

0.0184R x ( -1 + √ ( 1 + 1753 / R ) )

(500 / 5000 s)

0.0037R x ( -1 + √ ( 1 + 8765 / R ) )


AJ 149

 

IMPULSE / WAVESHAPE

MAX. WORKING VOLTAGE (kV)

(1 / 10 s)

1.84R x ( -1 + √ ( 1 + 21.3 / R ) )

(1.2 / 50 s)

0.37R x ( -1 + √ ( 1 + 106 / R ) )

(10 / 1000 s)

0.0184R x ( -1 + √ ( 1 + 2128 / R ) )

(500 / 5000 s)

0.0037R x ( -1 + √ ( 1 + 10644 / R ) )


AB 986

 

IMPULSE / WAVESHAPE

MAX. WORKING VOLTAGE (kV)

(1 / 10 s)

2.99R x ( -1 + √ ( 1 + 10.8 / R ) )

(1.2 / 50 s)

0.60R x ( -1 + √ ( 1 + 54 / R ) )

(10 / 1000 s)

0.0299R x ( -1 + √ ( 1 + 1082 / R ) )

(500 / 5000 s)

0.0060R x ( -1 + √ ( 1 + 5411 / R ) )


AB 993

 

IMPULSE / WAVESHAPE

MAX. WORKING VOLTAGE (kV)

(1 / 10 s)

2.99R x ( -1 + √ ( 1 + 13.1 / R ) )

(1.2 / 50 s)

0.60R x ( -1 + √ ( 1 + 66 / R ) )

(10 / 1000 s)

0.0299R x ( -1 + √ ( 1 + 1314 / R ) )

(500 / 5000 s)

0.0060R x ( -1 + √ ( 1 + 6571 / R ) )


 

Worked example :

Consider an AJ 149 Resistor with a Resistance Value of 3K3 and waveform of 1.2 / 50 s.

V working = 0.37R x (-1 + √(1 + 106 / R)) = 19.46 kV

 
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
                     
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