1N5257B-T Diodes Zetex, 1N5257B-T Datasheet

1N5257B-T

Manufacturer Part Number

1N5257B-T

Description

DIODE ZENER 33V 500MW DO-35

Manufacturer

Diodes Zetex

Datasheet

1.1N5231B-T.pdf (3 pages)

Specifications of 1N5257B-T

Voltage - Zener (nom) (vz)

33V

Voltage - Forward (vf) (max) @ If

1.1V @ 200mA

Current - Reverse Leakage @ Vr

100nA @ 25V

Tolerance

±5%

Power - Max

500mW

Impedance (max) (zzt)

58 Ohm

Mounting Type

Through Hole

Package / Case

DO-204AH, DO-35, Axial

Operating Temperature

-65°C ~ 200°C

Lead Free Status / RoHS Status

Lead free by exemption / RoHS Compliant

Other names

1N5257BDITR
1N5257BTR
1N5257BTR

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Features

Mechanical Data

Maximum Ratings and Electrical Characteristics

Notes:

DS18006 Rev. 15 - 2

Power Dissipation (Note 1)

Thermal Resistance, Junction to Ambient Air (Note 1)

Forward Voltage

Operating and Storage Temperature Range

500mW Power Dissipation

High Stability

Surface Mount Equivalents Available

Hermetic Package

Lead Free Finish, RoHS Compliant (Note 2)

Case: DO-35

Case Material: Glass

Moisture Sensitivity: Level 1 per J-STD-020C

Leads: Solderable per MIL-STD-202, Method 208

Terminals: Finish - Sn96.5Ag3.5. Solderable per

MIL-STD-202, Method 208

Polarity: Cathode Band

Marking: Type Number

Weight: 0.13 grams (approximate)

- Tolerance ±5%

1. Valid provided that leads are kept at TL £75°C with lead length = 9.5mm (3/8”) from case; derate above 75°C.

2. EC Directive 2002/95/EC (RoHS) revision 13.2.2003. Glass and High Temperature Solder Exemptions Applied where applicable,

see EU Directive Annex Notes 5 and 7.

Characteristic

@ I

= 200mA

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Symbol

qJA

STG

@ T

1N5221B - 1N5267B

= 25°C unless otherwise specified

500mW EPITAXIAL ZENER DIODE

Dim

All Dimensions in mm

-65 to +200

Value

DO-35

25.40

500

300

1.1

Min

Max

4.00

0.60

2.00

1N5221B - 1N5267B

Diodes Incorporated

°C/W

Unit

°C

Related parts for 1N5257B-T

1N5257B-T Summary of contents

Page 1

Features · 500mW Power Dissipation · High Stability · Surface Mount Equivalents Available · Hermetic Package · - Tolerance ± · Lead Free Finish, RoHS Compliant (Note 2) Mechanical Data · Case: DO-35 · Case Material: Glass · ...

Page 2

... 1N5247B 17 16.15 1N5248B 18 17.10 1N5249B 19 18.05 1N5250B 20 19.00 1N5251B 22 20.90 1N5252B 24 22.80 1N5253B 25 23.75 1N5254B 27 25.65 1N5255B 28 26.60 1N5256B 30 28.50 1N5257B 33 31.35 1N5258B 36 34.20 1N5259B 39 37.05 1N5260B 43 40.85 1N5261B 47 44.65 1N5262B 51 48.45 1N5263B 56 53.20 1N5264B 60 57.00 1N5265B 62 58.90 1N5266B 68 64.60 1N5267B 75 71 ...

Page 3

Ordering Information (Note 5) Device (Type Number)-A* (Type Number)-T* Notes: 4. *Add "-A" or "-T" to the appropriate type number in Table 1. Example: 6.2V Zener = 1N5234B-A for ammo pack. 5. For packaging details, visit our website at http://www.diodes.com/datasheets/ap02008.pdf. ...

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