PBW3K7900Q [VISHAY]

Fixed Resistor, Metal Foil, 10W, 3790ohm, 750V, 0.02% +/-Tol, -15,15ppm/Cel;


型号：	PBW3K7900Q
厂家：	VISHAY
描述：	Fixed Resistor, Metal Foil, 10W, 3790ohm, 750V, 0.02% +/-Tol, -15,15ppm/Cel 电阻器
文件：	总2页 (文件大小：318K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

Ultra-Precision Power Resistor

(

)

10 Watts

TCR, Resistance Range, Tolerance, Rated Power

Rated

Power (W)

at 25°C

TCR (ppm/°C)

Resistance

Type

Resistance Tolerance (%)*

Range (⍀)

-55°C to +125°C

0.4 to 1

1 to 5

±1 to ±5 (F, G, J)

0±15 (W)

±0.5 to ±5 (D, F, G, J)

5 to 10

10 to 25

25 to 50

±0.1 to ±5 (B, D, F, G, J)

±0.05 to ±5 (A, B, D, F, G, J)

±0.02 to ±5 (Q, A, B, D, F, G, J)

0±15 (W)

0±5 (X)

0±2.5 (Y)

50 to 50k

±0.01 to ±5 (T, Q, A, B, D, F, G, J)

±0.5 to ±5 (D, F, G, J)

heat sink**

0±15 (W)

0.002 to 0.05

0±15 (W)

0±5 (X)

±0.5 to ±5 (D, F, G, J)

0.05 to 0.1

0.1 to 5

5 to 10

Composition of Type Number

±0.1 to ±5 (B, D, F, G, J)

0±15 (W)

0±5 (X)

0±2.5 (Y)

±0.05 to ±5 (A, B, D, F, G, J)

±0.02 to ±5 (Q, A, B, D, F, G, J)

±0.01 to ±5 (T, Q, A, B, D, F, G, J)

10 to 25

25 to 100

Symbols in parentheses are for type number composition.

PB X 50R000 B

*Resistance figures for type PB are the values obtained by measuring the leads at

point 12.7±3.2mm away from the root, but in case of resistance below 10 ohm, the

values at 5.08±0.6mm away.

**For heat sinking, an aluminum chassis in 152.4 (L) x 101.6 (W) x 50.8 (H) x 1.0mm (T)

shall be used.

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

which represent significant digits. The sixth 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.

Power Derating Curve

Configuration

T¹

Type

40.0 0.2

20.0 0.2

30.0 0.ꢀ

20.0 0.2

ꢀ.0 0.2

1.0 0.1

1ꢀ.0 0.ꢀ

30 10

Schematic of PC

L¹

T¹

␾0.4

4-Terminal Connection

␾0.8 0.0ꢀ

␾1.2 0.0ꢀ

Dimensions in mm

Performance

Parameters

Test Condition

MIL-R-39009 Specification

ALPHA Typical Test Data

25°C

Maximum Rated Operating Temperature

Working Temperature Range

Maximum Working Voltage

-55°C to +155°C

750V

Maximum Working Current

PB=5A, PC=32A

Power Conditioning

25°C, Rated Voltage, 96 hrs.

-55°C, No Load, 24 hrs.

Atmospheric: AC 1KV, 1 min. Barometric: AC 500V, 1min.

DC 500V, 2 min.

-55°C, Rated Voltage

Rated Voltage x 2.5, 5 sec.

±0.2%

±0.02%

Low Temperature Storage

Dielectric Withstanding Voltage

Insulation Resistance

Low Temperature Operation

Overload

±0.3%

±0.2%

over 10,000M⍀

±0.3%

±0.005%

over 10,000M⍀

±0.005%

±0.01%

±0.3%

Moisture Resistance

Terminal Strength

+65°C to -10°C, 90% RH to 98% RH, Rated Voltage, 10 cycles (240 hrs.)

2.27kg (5 pounds),10 sec.

±0.5%

±0.2%

±0.05%

±0.005%

Shock

100G, 6ms., Sawtooth Wave, X, Y, Z, each 3 shocks

20G, 10Hz to 2,000Hz to 10Hz, 20 min., X, Y, Z, each 4 hrs.

±0.2%

±0.005%

Vibration, High Frequency

Life

25°C, Rated Power, 1.5 hr. – ON, 0.5 hr. – OFF, 2,000 hrs.

155°C, No Load, 2,000 hrs.

±1.0%

±0.01%

High Temperature Exposure

Solderability

245°C, 5 sec.

over 95% coverage

Frequency Characteristics

Temperature of Resistor Surface

⍀

⌬

⍀

Four-Terminal Resistor

Affect of PB type lead for resistance value and TCR

␾

For low ohmic resistor (less than 10 ohm), the resistance value and TCR of the

copper lead increases overall resistance value. Four-terminal (Kelvin) connection

is recommended per the following figure. Loading current at voltage and current

terminals (V, I) causes measurement error.

Four-Terminal Resistor

⍀

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