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Product Detailed Parameters
- Description：DIODE ZENER 56V 500MW SQ-MELF
- Series：-
- Mfr：Microchip Technology
- Package：Tape & Reel (TR)
- Voltage - Zener (Nom) (Vz)：56 V
- Tolerance：±5%
- Power - Max：500 mW
- Impedance (Max) (Zzt)：100 Ohms
- Current - Reverse Leakage @ Vr：50 nA @ 43 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 1N6342US/TR is a surface-mount Zener voltage regulator in the B-SQ MELF package. It provides a nominal Zener voltage of 56V with a standard tolerance of ±5%. The device operates at a test current of 2.2mA and exhibits a dynamic impedance of 100 ohms. Maximum power dissipation is rated at 0.5W, with an operating temperature range from -65°C to +175°C.
Feature Summary
- Hermetically sealed voidless glass construction with internal metallurgical bonds for high reliability.
- Qualified per MIL-PRF-19500/533 standards for military-grade applications.
- Inherently radiation hard and non-sensitive to electrostatic discharge.
Applications
- High-reliability circuits 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 the application, as these levels are available within the series. Confirm RoHS compliance status if environmental regulations apply, noting that compliant versions are typically commercial grade only. Ensure the tape and reel packaging meets EIA-481-B standards for automated assembly processes.
Selection Notes
Select this component when a robust, hermetically sealed surface-mount Zener diode is needed for extreme environments. The 56V rating suits mid-range voltage regulation tasks. Consider the thermal resistance values for derating calculations based on whether junction-to-end cap or junction-to-ambient conditions apply. Verify that the 0.5W power dissipation limit accommodates the circuit's thermal requirements.
Part Context
This part belongs to the 1N6309US through 1N6355DUS series of industry-recognized 0.5-watt Zener voltage regulators. The series offers selections from 2.4 to 200 volts with various tolerance options. It serves as the surface-mount equivalent to the axial-leaded JEDEC registered 1N6309 through 1N6355 series, maintaining similar performance characteristics in a compact form factor.
Replacement Considerations
Direct replacements include other parts within the 1N6309US-1N6355US series from Microchip/Microsemi. Cross-brand equivalents must match the B-SQ MELF package dimensions, 56V nominal voltage, and hermetic sealing requirements to ensure compatibility with existing footprints and reliability standards.
FAQ
What type of metallurgical bond does the 1N6342US use?
The 1N6342US utilizes Category I internal metallurgical bonds, which are specified for devices in the 1N6321US through 1N6355US range.
Is the 1N6342US sensitive to electrostatic discharge?
No, the device is non-sensitive to electrostatic discharge per MIL-STD-750 method 1020.
