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Product Detailed Parameters
- Description：DIODE ZENER 33V 500MW SQ-MELF
- Series：-
- Mfr：Microchip Technology
- Package：Bulk
- Voltage - Zener (Nom) (Vz)：33 V
- Tolerance：±5%
- Power - Max：500 mW
- Impedance (Max) (Zzt)：40 Ohms
- Current - Reverse Leakage @ Vr：50 nA @ 25 V
- Operating Temperature：-65°C ~ 175°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：SQ-MELF, B
- Voltage - Forward (Vf) (Max) @ If：1.4 V @ 1 A
- Grade：-
- Qualification：-
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Overview
The Microchip Technology 1N6336US is a Zener voltage regulator diode designed for surface-mount applications. It features a B-SQ-MELF-2 package with a power dissipation rating of 500 mW. The device provides a nominal Zener voltage of 33 V with a 5% tolerance at a test current of 3.8 mA. Key electrical characteristics include a maximum reverse leakage current of 50 nA and a Zener impedance of 40 Ohms. It operates within a temperature range of -65°C to +175°C.
Feature Summary
- Hermetically sealed voidless-glass construction using internal metallurgical bonds for high reliability.
- Surface-mount equivalent of the JEDEC registered 1N6309 through 1N6355 series.
- Military qualification per MIL-PRF-19500/533 standards.
Applications
- High-reliability electronic circuits where failure cannot be tolerated.
- Voltage regulation in military-grade systems.
- Space-qualified electronics requiring hermetic sealing.
Procurement Notes
Verify the specific qualification level (JAN, JANTX, JANTXV, or JANS) required for your application, as availability varies by grade. Confirm that the B-SQ MELF package dimensions match your PCB footprint. Ensure the manufacturer documentation confirms the voidless glass seal integrity for your environmental conditions.
Selection Notes
Select this component when a hermetically sealed surface-mount Zener diode is required for critical applications. Compare the 500 mW power rating against circuit load requirements. Verify that the 33 V breakdown voltage aligns with system specifications. Consider the operating temperature range limits for extreme environments.
Part Context
This part belongs to the industry-recognized 1N63xx series of 0.5 W Zener voltage regulators. These devices are available in axial leaded packages as well as the surface-mount B-SQ MELF format. The series covers Zener voltages from 2.4 V to 200 V with various tolerance options.
Replacement Considerations
Direct equivalents include other manufacturers' hermetically sealed MELF Zener diodes with identical 33 V ratings and 500 mW power dissipation. Verify pinout compatibility and thermal performance before substitution.
FAQ
What is the maximum operating temperature for the 1N6336US?
The maximum operating temperature is +175°C.
Is the 1N6336US hermetically sealed?
Yes, it features a voidless hermetically sealed glass package with internal metallurgical bonds.
