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Product Detailed Parameters
- Description：DIODE ZENER 24V 500MW SQ-MELF
- Series：-
- Mfr：Microchip Technology
- Package：Bulk
- Voltage - Zener (Nom) (Vz)：24 V
- Tolerance：±5%
- Power - Max：500 mW
- Impedance (Max) (Zzt)：24 Ohms
- Current - Reverse Leakage @ Vr：50 nA @ 18 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 1N6333US is a Zener diode voltage regulator designed for surface-mount applications. It features a B-SQ-MELF package and operates within a temperature range of -65°C to +175°C. The device provides a nominal Zener voltage of 24V with a test current of 5.2mA and a maximum impedance of 24 Ohms. It is part of the 1N6309US through 1N6355DUS series, which are voidless hermetically sealed glass Zener diodes qualified per MIL-PRF-19500/533.
Feature Summary
- Hermetically sealed voidless-glass construction using internal metallurgical bonds for high reliability.
- Military qualification compliant with MIL-PRF-19500/533 standards.
- Surface-mount equivalent of the JEDEC registered 1N6309 through 1N6355 series.
Applications
- High-reliability military circuits where failure cannot be tolerated.
- Voltage regulation in harsh environmental conditions requiring extended temperature operation.
- Space-qualified electronic systems utilizing hermetically sealed components.
Procurement Notes
Verify the specific qualification level (JAN, JANTX, JANTXV, or JANS) required for your application, as availability varies by grade. Confirm RoHS status, as commercial versions may differ from military specifications. Ensure the B-SQ MELF package footprint matches your PCB design constraints before ordering.
Selection Notes
Select this component when a hermetically sealed, surface-mount Zener diode is needed for critical applications. It serves as the SMT alternative to axial leaded 1N63xx parts. Consider the 24V breakdown voltage and 500mW power rating against circuit requirements. Verify thermal management capabilities given the small form factor.
Part Context
This part belongs to the 1N6309US through 1N6355DUS family of 0.5-watt Zener voltage regulators. These devices are recognized industry-standard components known for their robustness. The US suffix indicates the specific surface-mount B-SQ MELF package configuration distinct from other variants in the series.
Replacement Considerations
Direct replacements include other parts within the 1N6309US through 1N6355DUS series that match the 24V specification. Ensure any substitute maintains the same hermetic sealing and military qualification levels if required by the system design.
