1N4905A

$38.66

Description：DIODE ZENER 12.8V 400MW DO7
Series：-
Mfr：Microchip Technology
Package：Bulk

SKU:486c2a7cc6e8 Category: Single Zener Diodes Brand: Microchip Technology

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Product introduction

Product Detailed Parameters

Description：DIODE ZENER 12.8V 400MW DO7
Series：-
Mfr：Microchip Technology
Package：Bulk
Voltage - Zener (Nom) (Vz)：12.8 V
Tolerance：±5%
Power - Max：400 mW
Impedance (Max) (Zzt)：100 Ohms
Current - Reverse Leakage @ Vr：-
Operating Temperature：-55°C ~ 100°C
Mounting Type：Through Hole
Package / Case：DO-204AA, DO-7, Axial
Voltage - Forward (Vf) (Max) @ If：-
Grade：-
Qualification：-

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1N4905A

Overview

The 1N4905A is a single Zener diode manufactured by Microchip Technology, housed in the DO-7 (DO-204AA) axial leaded package. It features a nominal Zener voltage of 12.8V and a maximum power dissipation of 400mW at ambient temperature. The component is designed for general-purpose voltage regulation and protection applications.

Feature Summary

Provides stable voltage reference through Zener breakdown mechanism
Utilizes glass passivated junction for reliability
Axial leaded construction facilitates through-hole mounting

Applications

Voltage regulation circuits
Overvoltage protection
Reference voltage generation

Procurement Notes

Verify manufacturer authenticity as multiple vendors supply this part. Confirm RoHS compliance status, as standard versions may contain lead. Check specific suffixes like /TR for tape and reel packaging variations against bare tube requirements.

Selection Notes

Select based on required 12.8V regulation point and 400mW thermal limit. Ensure PCB layout accommodates DO-7 axial leads. Consider derating power dissipation if operating above specified ambient temperatures to maintain junction safety.

Part Context

This component belongs to the standard Zener diode family produced by Microchip Technology under the Microsemi brand heritage. It serves as a discrete semiconductor device for analog circuit design, distinct from integrated voltage regulators or transient suppression arrays.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source data. Verify pinout compatibility and electrical tolerances before substituting with generic equivalents.

How to buy

Online and offline orders are supported. If the item is available for online purchase, you can place it in the cart; for wholesale pricing, please contact our product manager for a quote.

Payment Method

Payment methods: T/T, WeChat Pay, credit cards, Google Pay, Apple Pay . Buyer covers shipping, fees, duties, and taxes; contact our product manager if you need a contract/procurement process.

Delivery time

In-stock items usually ship within 24 hours. Otherwise, shipment is arranged 1 to 2 days after the items arrive at our warehouse. Timing depends on destination and shipping method.

Freight calculation

Freight cost depends on destination, package size, and weight . We offer shipping options via DHL, FedEx, UPS, and TNT , and can ship using your freight account upon request.

Mode of Transportation

We ship via DHL, FedEx, UPS, and TNT. If you prefer a specific logistics provider, we can ship using your designated carrier.

Return and Refund

Returns are accepted within 60 days of invoice with RMA approval. Items must be resalable; original invoice and test report are required. No returns for customer errors.