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Product Detailed Parameters
- Description：DIODE ZENER 160V 500MW SQ-MELF
- Series：-
- Mfr：Microchip Technology
- Package：Tape & Reel (TR),Cut Tape (CT)
- Voltage - Zener (Nom) (Vz)：160 V
- Tolerance：±5%
- Power - Max：500 mW
- Impedance (Max) (Zzt)：1200 Ohms
- Current - Reverse Leakage @ Vr：50 nA @ 122 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 1N6353US/TR is a surface-mount Zener diode with a nominal voltage of 160 V and a maximum power dissipation of 500 mW. It features a B-SQ MELF package, operates within a temperature range of -65°C to +175°C, and has a dynamic impedance of 1200 Ohms at the test current IZT. The device exhibits a reverse leakage current of 50 nA at 122 V and a forward voltage of 1.4 V at 1 A.
Feature Summary
- Hermetically sealed voidless glass construction with internal metallurgical bonds for high reliability.
- Military qualification per MIL-PRF-19500/533 standards.
- Inherently radiation hard and non-sensitive to electrostatic discharge.
Applications
- High-reliability applications where failure cannot be tolerated.
- Voltage regulation over broad operating current and temperature ranges.
- Radiation-hardened electronic systems.
Procurement Notes
Verify the specific reliability level (JAN, JANTX, JANTXV, or JANS) required for your application, as these levels are available per MIL-PRF-19500/533. Confirm RoHS compliance status if applicable, noting that compliant versions are commercial grade only. Ensure the tape and reel packaging meets EIA-481-B standards for automated assembly.
Selection Notes
Select this component for its robust voidless-glass construction and wide operating temperature range up to 175°C. Consider the 1200 Ohm dynamic impedance when designing circuits requiring stable voltage regulation under varying load conditions. Verify thermal derating requirements based on the junction-to-end cap resistance of 21 °C/W for this specific series.
Part Context
This part belongs to the 1N6309US through 1N6355DUS series of 0.5-watt Zener voltage regulators. The series offers selections from 2.4 to 200 volts in standard 5% tolerances, with tighter 1% and 2% options available. These industry-recognized devices serve as surface mount equivalents to JEDEC registered axial-leaded packages.
Replacement Considerations
Direct replacements include other parts within the 1N6309US thru 1N6355DUS series that share the same 160 V nominal voltage and B-SQ MELF package. Verify matching reliability levels and tolerance specifications before substitution.
