Datasheet > 1N991A-HR

1N991A-HR

更新时间： 2025-09-25 18:15:39

品牌	Logo	应用领域
DIGITRON		/
页数	文件大小	规格书
4页	754K
描述
Descriptive : Zener Diode; Zener Voltage : 180; Tolerance : 10; Power Rating : 0.5; Max Zener Impedance : 2200; Max Zener Knee Impedance : 7100; Max Reverse Current : 5; Package : DO-35; Available Lead Finish : Sn/Pb; Notes : Pb-free;

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1N991A-HR 数据手册

1N957B-1N992B

500 mW SILICON ZENER DIODES

High-reliability discrete products

and engineering services since 1977

FEATURES



Available as “HR” (high reliability) screened per MIL-PRF-19500, JANTX level. Add “HR” suffix to base part number.

Available as non-RoHS (Sn/Pb plating), standard, and as RoHS by adding “-PBF” suffix.

MAXIMUM RATINGS

Rating

Value

Operating temperature

Storage temperature

-65°C to +175°C

250°C/W junction to lead at 3/8” lead length from body, or 310°C/W junction to ambient when mounted on

FR4 PC board⁽¹⁾

Thermal resistance

Steady-state power

≤ 25°C when mounted on FR4 PC board⁽¹⁾

0.5W at T_L≤ 50°C 3/8” from body or 0.48W at T_A

@ 200 mA: 1.1 volts maximum (1N957B-1N985B)

@ 200mA: 1.3 volts maximum (1N985-1N992B)

260°C for 10 s maximum

Forward voltage

Solder temperature

ELECTRICAL CHARACTERISTICS (T_A= 25°C unless otherwise specified)

Nominal

Maximum Maximum

Zener

zener

Maximum

temperature

coefficient

DC zener

surge

Maximum reverse

leakage current

test

Maximum zener impedance⁽³⁾

Part

voltage

(2)

current

(4)

current

(5)

current

number

(1)

V_Z

Volts

6.8

7.5

8.2

9.1

I_ZT

18.5

16.5

15.0

14.0

12.5

11.5

10.5

9.5

Z_ZT@ I_ZT

Ohms

4.5

5.5

6.5

7.5

8.5

9.5

11.5

Z_ZK

Ohms

700

@I_ZK

I_ZM

9.5

8.8

I_ZSM

300

275

250

225

200

175

160

150

130

120

110

100

I_R

µA

150

@V_R

Volts

5.2

α_vz

%/°C

0.05

1N957B

1N958B

1N959B

1N960B

1N961B

1N962B

1N963B

1N964B

1N965B

1N966B

1N967B

1N968B

1N969B

1N970B

1N971B

1N972B

1N973B

1N974B

1N975B

1N976B

1.0

700

0.5

5.7

0.058

0.065

0.068

0.075

0.076

0.077

0.079

0.082

0.083

0.085

0.086

0.087

0.088

0.090

0.091

0.092

0.093

0.094

0.095

700

0.5

6.2

700

0.5

6.9

700

0.25

7.6

700

8.4

700

9.1

700

9.9

8.5

700

11.4

12.2

13.7

15.2

16.7

18.2

20.6

22.8

25.1

27.4

29.7

32.7

7.8

700

7.0

750

6.2

750

5.6

750

5.2

750

4.6

750

4.2

1000

1500

3.8

3.4

3.2

3.0

Rev. 20150825

12 3 4

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1N991AUR-HR	DIGITRON	获取价格	Descriptive : Zener Diode; Zener Voltage : 180; Tolerance : 10; Power Rating : 0.5; Max Ze
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