ChipApex | Global Electronic Components Supplier
SEARCH
Search Product
Search Post
— IC芯片 | 连接器 | 传感器 | 被动器件 —
Consult the customer manager about the wholesale price.
consultation hotline：86-132-6715-2157
email：[email protected]
Contact the product manager for consultation. One-stop consultation is available.
Do you want a lower wholesale price? Please send us your inquiry and we will reply immediately.
Product Detailed Parameters
- Description：DIODE ZENER 6.8V 50W DO5
- Series：-
- Mfr：Microchip Technology
- Package：Bulk
- Voltage - Zener (Nom) (Vz)：6.8 V
- Tolerance：±10%
- Power - Max：50 W
- Impedance (Max) (Zzt)：0.2 Ohms
- Current - Reverse Leakage @ Vr：300 µA @ 4.5 V
- Operating Temperature：-65°C ~ 175°C
- Mounting Type：Chassis, Stud Mount
- Package / Case：DO-203AB, DO-5, Stud
- Voltage - Forward (Vf) (Max) @ If：1.5 V @ 10 A
- Grade：-
- Qualification：-
Download product information
Overview
The Microchip Technology 1N3305RA is a high-power 50 W Zener diode from the JEDEC registered 1N3305B series. It provides voltage regulation with a nominal Zener voltage of 6.8 V at a test current of 1,850 mA. The device features a maximum dynamic impedance of 0.20 Ohms and a typical temperature coefficient of +0.040 %/°C. It operates within a junction and storage temperature range of -65°C to +175°C. The component utilizes a DO-5 (DO-203AB) package with a hexagonal stud for mounting.
Feature Summary
- Hermetically sealed welded metal and glass construction
- Internal solder bond design
- Reverse polarity configuration with cathode connected to case
- Inherently radiation hard
Applications
- Voltage regulation over broad operating current and temperature ranges
- Over-voltage protection in high-density circuit designs
- General regulation and voltage reference functions
Procurement Notes
Verify that the ordering suffix 'R' correctly denotes the reverse polarity configuration where the cathode is connected to the case, as standard units feature an anode-to-case connection. Confirm the 'A' suffix indicates the specific tolerance level required for the application. Ensure compatibility with the DO-5 package dimensions and mounting hardware specifications before procurement.
Selection Notes
Select this component when a 50 W power dissipation capability is required alongside precise voltage regulation. The reverse polarity option facilitates specific grounding schemes where the cathode must be tied to the chassis or heat sink. Consider the thermal resistance characteristics and derating curves for applications operating above 75°C case temperature.
Part Context
This part belongs to the 1N3305 thru 1N3350B series of 50 Watt Zener Diodes manufactured by Microsemi (now Microchip Technology). These devices are designed for high-power applications requiring robust voltage regulation. The series offers a wide selection of voltages ranging from 3.9 V to 200 V, packaged in the industry-standard DO-5 form factor.
Replacement Considerations
Equivalent parts include other 50 W Zener diodes in the DO-5 package with matching 6.8 V regulation and reverse polarity. Verify that substitute components meet the same MIL-PRF-19500/358 qualification levels if military-grade screening is required.
