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Vishay 1N5255B-TAP

1N5255B-TAP Zener Diode 28V 500mW AEC-Q101 DO-35

MPN1N5255B-TAP
End of Life

1N5255B-TAP, Vishay, Zener Diode, 28 V, 500 mW, ±5%, DO-35 Axial, -65°C to 175°C, AEC-Q101

$0.18Ref. price · indicative, final on quote
Vishay 1N5255B-TAP datasheet (PDF)
PackagingDO-204AH, DO-35, Axial
RoHSROHS3 Compliant
SeriesAutomotive, AEC-Q101
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

1N5255B-TAP specifications
ParameterValue
SeriesAutomotive, AEC-Q101
MountingThrough Hole
Voltage - zener (Nom)28 V
Voltage - forward (Vf) (Max) @ if1.1 V @ 200 mA
Current - reverse leakage @ vr100 nA @ 21 V
Power - max500 mW
Operating temperature-65°C ~ 175°C
PackageTape & Box (TB); Cut Tape (CT)
Tolerance±5%
CaseDO-204AH, DO-35, Axial
Impedance (Max)44 Ohms

Product details

28 V zener for automotive and industrial clamping

The 1N5255B-TAP is a 28 V zener diode rated for 500 mW continuous power dissipation, housed in a DO-35 (DO-204AH) axial-lead package. The 44 Ω maximum dynamic impedance (Zzt) is typical for a 28 V device at this power level — the regulation slope is modest but predictable over the operating current range.

Leakage and forward characteristics

Reverse leakage is specified at 100 nA maximum at 21 V — a guard-banded condition that confirms the diode holds off well below the 28 V knee. Forward voltage is 1.1 V maximum at 200 mA, a standard figure for a silicon zener of this die size.

Active production, automotive-grade traceability

The Tape & Box (TB) and Cut Tape (CT) packaging options cover both volume production and prototype reels.

Frequently asked questions

Is 1N5255B-TAP automotive qualified?

Yes.

What package does 1N5255B-TAP come in?

The diode is supplied in a DO-204AH (DO-35) axial-lead package. The mounting type is through-hole.