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PB, PC Series

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Document No.: 67013

Revision: 25-Apr-2016

Ultra Precision Power Resistor (10 Watts)

COMPOSITION OF TYPE NUMBER

PB X 50R000 B

Resistance value, in ohm, is expressed by a series of six

characters, five of which represent significant digits. R or K is

a dual-purpose letter that designates both the value range

(R for ohmic; K for kilo-ohm) and the location of decimal point.

CONFIGURATION (DIMENSIONS IN mm)

W

D

T

T1

PB

W

I

I

V

IV

IV

V

D

T

T1

PC

Schematic of PC

4-Terminal Connection

Type

PB

PC

L

40.0±0.2

L1

20.0±0.2

L2

30.0±0.5

W

20.0±0.2

T

5.0±0.2

T1

1.0±0.1

F

15.0±0.5

ℓ

30±10

D

Dia. 4.0

d

Dia. 0.8±0.05

Dia. 1.2±0.05

TCR, RESISTANCE RANGE, TOLERANCE,

RATED POWER

Type

TCR (ppm/°C)

–25°C to

125°C*

Resistance

Range

(Ω)

Resistance

Tolerance (%)*†

Rated

Power

(W)

at 25°C

PB

0±15 (W)

0.4 to 1

1 to ±5

(F, G, J)

2

in free air

and

10

On heat

sink **

0±15 (W)

0±5 (X)

0±2.5 (Y)

1 to 5

±0.5 to ±5

(D, F, G, J)

5 to 10

±0.1 to ±5

(B, D, F, G, J)

10 to 25

±0.05 to ±5

(A, B, D, F, G, J)

25 to 50

±0.02 to ±5

(Q, A, B, D, F, G, J)

50 to 50k

±0.01 to ±5

(T, Q, A, B, D, F, G, J)

PC

0±15 (W)

0.002 to

0.05

±0.5 to ±5

(D, F, G, J)

0±15 (W)

0±5 (X)

0.05 to 0.1

±0.5 to ±5

(D, F, G, J)

0±15 (W)

0±5 (X)

0±2.5 (Y)

0.1 to 5

±0.1 to ±5

(B, D, F, G, J)

5 to 10

±0.05 to ±5

(A, B, D, F, G, J)

10 to 25

±0.02 to ±5

(Q, A, B, D, F, G, J)

25 to 100

±0.01 to ±5

(T, Q, A, B, D, F, G, J)

* Symbols in parentheses are for type number composition.

† Resistance figures for type PB are the values obtained by measuring

the leads at point 12.7±3.2 mm away from the root, but in case of

resistance below 10 ohm, the values at 5.08±0.6 mm away.

** For heat sinking, an aluminum chassis in 152.4 (L) x 101.6 (W) x 50.8 (H)

x 1.0 mm (T) shall be used.

POWER DERATING CURVE

Ultra Precision Power Resistor (10 Watts)

PB

PC