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1N5531B (DO35)
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Product Detailed Parameters
- Description：DIODE ZENER 11V 500MW DO204AH
- Series：-
- Mfr：Microsemi Corporation
- 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 Microsemi Corporation 1N5531B (DO35) is a low voltage avalanche Zener diode rated at 0.5 watts, housed in a hermetically sealed glass DO-35 axial-lead package. It provides an 11V nominal Zener voltage with a standard ±5% tolerance. The device operates within a junction temperature range of -65°C to +175°C and features a maximum reverse leakage current of 50µA at 9.9V. It offers guaranteed voltage regulation from the low regulator current to the test current.
Feature Summary
- Hermetically sealed glass DO-35 package construction
- Internal metallurgical bond option available with '-1' suffix
- Qualified for JAN, JANTX, and JANTXV military levels
- Inherently radiation hard
Applications
- Voltage regulation over broad operating current and temperature ranges
- Low noise reference applications
- Military and aerospace electronic circuits
Procurement Notes
Verify that the specific part number matches the required JEDEC type and tolerance suffix. Confirm if the internal metallurgical bond option is necessary for your application, as it is required for certain military qualifications. Check RoHS compliance status, as it varies by commercial grade availability. Ensure the ordering suffix aligns with the desired lead finish and screening level.
Selection Notes
Select this component when a stable 11V reference is needed in a ruggedized environment. The DO-35 package supports flexible axial-lead mounting. Consider the metallurgical bond option if higher reliability or specific military screening is required. Verify that the power dissipation requirements fit within the thermal derating curves provided in the datasheet.
Part Context
This device belongs to the 1N5518 thru 1N5546 series of 0.5 watt axial-leaded glass Zener Voltage Regulators. The series covers voltages from 3.3 to 33 volts with various tolerance options. The 1N5531B specifically targets the 11V segment with a standard 5% tolerance, fitting into the broader family of low voltage avalanche regulators.
Replacement Considerations
Equivalent parts include other manufacturers' 1N5531 variants in the DO-35 package. For military specifications, verify compatibility with MIL-PRF-19500/437 standards. Surface mount alternatives are available in the DO-213AA MELF package format.
