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Product Detailed Parameters
- Description：DIODE ZENER 39V 5W T18
- Series：-
- Mfr：Microsemi Corporation
- Package：Tape & Reel (TR)
- Voltage - Zener (Nom) (Vz)：39 V
- Tolerance：±5%
- Power - Max：5 W
- Impedance (Max) (Zzt)：14 Ohms
- Current - Reverse Leakage @ Vr：500 nA @ 28.1 V
- Operating Temperature：-65°C ~ 150°C
- Mounting Type：Through Hole
- Package / Case：T-18, Axial
- Voltage - Forward (Vf) (Max) @ If：1.2 V @ 1 A
- Grade：-
- Qualification：-
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Overview
The Microsemi Corporation 1N5366B is a silicon 5.0-watt Zener diode from the JEDEC registered 1N5333-5388B series. It provides voltage regulation at a nominal Zener voltage of 39 V with a ±5% tolerance, indicated by the B suffix. The device operates within a temperature range of -65°C to +150°C and features an axial lead T-18 plastic package. Electrical characteristics include a maximum dynamic impedance of 14 Ohms, a reverse current of 500 µA, and a maximum regulator current of 122 mA.
Feature Summary
- Provides stable voltage regulation across a broad operating current and temperature range
- Withstands high surge stresses specified by voltage regulation standards
- Features flexible axial-lead mounting terminals for through-hole applications
- Encapsulated in void-free transfer molded thermosetting epoxy meeting UL94V-0
Applications
- Voltage regulation circuits requiring 5W power dissipation
- High surge stress environments
- Broad operating current and temperature range applications
Procurement Notes
Verify the specific manufacturer source, as this component type is produced by multiple vendors including onsemi and Microsemi. Confirm that the ordering suffix 'B' corresponds to the required ±5% voltage tolerance. Ensure the package style matches the required T-18 axial lead configuration. Check RoHS compliance status if environmental regulations apply to the final assembly.
Selection Notes
Select this component when a 39 V reference or regulation point is needed with 5W power handling capabilities. The ±5% tolerance suits general-purpose applications where tighter precision is not critical. Consider thermal management requirements, as steady-state power dissipation depends on heat sinking and ambient temperature conditions defined in the datasheet derating curves.
Part Context
This part belongs to the 1N5333B through 1N5388B series of silicon 5-watt Zener diodes manufactured by Microsemi's Scottsdale Division. The series covers a wide voltage selection from 3.3V to 200V. These devices are designed for applications requiring robust performance under high surge stresses and broad temperature variations.
Replacement Considerations
Surface mount equivalents are available as SMBJ5333 to SMBJ5388B or SMBG5333B to SMBG5388B. Military screening options exist with MQ, MX, or MV prefixes. Other manufacturers produce identical JEDEC registered numbers; verify electrical parameters match before substitution.
FAQ
What does the 'B' suffix indicate for the 1N5366B?
The 'B' suffix identifies the device as having a standard voltage tolerance of plus/minus 5%.
Is the 1N5366B sensitive to electrostatic discharge?
No, the device is nonsensitive to ESD per MIL-STD-750 Method 1020.
