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1N5531B
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Product Detailed Parameters
- Description：DIODE ZENER 11V 500MW DO204AH
- Series：-
- Mfr：Microchip Technology
- Package：Bulk
- Voltage - Zener (Nom) (Vz)：11 V
- Tolerance：±5%
- Power - Max：500 mW
- Impedance (Max) (Zzt)：80 Ohms
- Current - Reverse Leakage @ Vr：50 nA @ 9.9 V
- Operating Temperature：-65°C ~ 175°C
- Mounting Type：Through Hole
- Package / Case：DO-204AH, DO-35, Axial
- Voltage - Forward (Vf) (Max) @ If：1.1 V @ 200 mA
- Grade：-
- Qualification：-
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Overview
The Microchip Technology 1N5531B is a low voltage avalanche Zener diode rated at 0.5 W with an axial-lead glass DO-35 (DO-204AH) package. It provides a nominal Zener voltage of 11 V measured at a test current of 1 mA. The device features a maximum Zener impedance of 80 Ohms and a maximum reverse leakage current of 9 µA at 9.9 V. It operates within a junction temperature range of -65°C to +175°C.
Feature Summary
- Provides stable voltage regulation across a broad operating current and temperature range
- Features hermetically sealed glass construction for environmental protection
- Offers minimal capacitance characteristics suitable for high-frequency applications
- Inherently radiation hard without requiring special processing
Applications
- Voltage regulation in aerospace and defense circuits
- Reference voltage sources in precision instrumentation
- Overvoltage protection in harsh environment electronics
- Clamping circuits in communication systems
Procurement Notes
Verify the specific suffix requirements against the design specification, as the B suffix denotes a 5% voltage tolerance. Confirm whether the standard metallurgical bond or the -1 bonded option is required for the intended application. Ensure compliance with MIL-PRF-19500/437 if military qualification levels are necessary for the project.
Selection Notes
Select this component when a 11 V reference is needed in a through-hole DO-35 package. Consider the 5% tolerance of the B suffix against tighter options like C or D if higher accuracy is required. Evaluate the thermal resistance values for derating calculations in enclosed environments. Verify that the 0.5 W power rating meets the circuit's steady-state dissipation needs.
Part Context
This part belongs to the 1N5518 thru 1N5546 series of low voltage avalanche Zener diodes manufactured by Microchip Technology. The series covers a voltage selection from 3.3 to 33 volts. These devices are JEDEC registered and available in commercial, JAN, JANTX, and JANTXV qualification levels depending on the ordering suffix.
Replacement Considerations
JAN1N5531C-1
FAQ
What does the 'B' suffix indicate for the 1N5531B?
The 'B' suffix indicates a Zener voltage tolerance of plus/minus 5.0%.
Is the 1N5531B radiation hard?
Yes, the device is inherently radiation hard as described in Microsemi MicroNote 050.
