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Product Detailed Parameters
- Description：DIODE ZENER 33V 500MW SQ-MELF
- Series：-
- Mfr：Microchip Technology
- Package：Tape & Reel (TR),Cut Tape (CT)
- 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/TR is a surface-mount Zener voltage regulator in the B-SQ MELF package. It provides a nominal Zener voltage of 33 V with a standard tolerance of ±5%. The device operates at a test current of 3.8 mA and exhibits a dynamic impedance of 40 Ohms. It supports a maximum steady-state power dissipation of 0.5 W and functions within a junction temperature range of -65 °C to +175 °C.
Feature Summary
- Hermetically sealed voidless glass construction with internal metallurgical bonds for high reliability.
- Military qualification per MIL-PRF-19500/533 across JAN, JANTX, JANTXV, and JANS levels.
- Inherently radiation hard and non-sensitive to electrostatic discharge.
Applications
- High-reliability military applications where failure cannot be tolerated.
- Voltage regulation over broad operating current and temperature ranges.
- Surface mount equivalents for legacy JEDEC registered axial leaded packages.
Procurement Notes
Verify the specific reliability level (JAN, JANTX, JANTXV, or JANS) required for the application, as these levels dictate the manufacturing lot traceability and screening standards. Confirm RoHS compliance status if environmental regulations apply, noting that compliant versions are available only on commercial grades. 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 critical systems. The 1N6336US/TR serves as the direct surface-mount equivalent to the axial-leaded 1N6336D. Consider the thermal resistance characteristics and derating curves for PCB layout to ensure operation remains within the specified junction temperature limits under all expected load conditions.
Part Context
This part belongs to the 1N6309US through 1N6355US series of industry-recognized 0.5 watt Zener voltage regulators. The series offers extensive selections from 2.4 to 200 volts with various tolerance options. These devices utilize a B-SQ MELF package, providing a compact surface-mount solution that maintains the performance and reliability standards of traditional axial-leaded components.
Replacement Considerations
Direct replacements include other parts within the 1N6309US thru 1N6355US series that share the same B-SQ MELF package and electrical specifications. Verify that any substitute matches the required military qualification level and metallurgical bond category (Category I or III) to maintain system integrity.
FAQ
What is the difference between Category I and Category III metallurgical bonds?
Category I bonds are used for the 1N6321US through 1N6355US devices, while Category III bonds are utilized for the 1N6309US through 1N6320US devices.
Is the 1N6336US/TR sensitive to electrostatic discharge?
No, the device is inherently non-sensitive to electrostatic discharge as verified by MIL-STD-750 method 1020.
