SMAJ5939BHE3-TP

Single Zener Diodes Overview

The SMAJ5939BHE3-TP is a 1.5 Watt Zener Diode manufactured by Micro Commercial Components (MCC). It features a nominal Zener voltage of 39 V with a ±5% tolerance and a maximum dynamic impedance of 45 Ohms at the test current of 9.6 mA. The device operates within a junction temperature range of -65°C to +150°C and utilizes an SMA (DO-214AC) surface-mount package. It holds AEC-Q101 qualification for automotive applications.

Single Zener Diodes Feature Summary

• AEC-Q101 qualified for automotive reliability standards
• Halogen-free "Green" device compliant with environmental directives
• Epoxy material meets UL 94 V-0 flammability rating
• Moisture sensitivity level 1 certification

Single Zener Diodes Applications

• Automotive electronic circuit protection
• Voltage regulation in surface mount assemblies
• Transient voltage suppression in low-power systems

Single Zener Diodes Procurement Notes

Verify authenticity through authorized MCC distributors or direct purchase, as counterfeiting is a known industry risk. Confirm component status, noting that this specific part number may be discontinued or subject to change without notice. Ensure packaging matches the specified tape and reel format containing 7,500 pieces per reel.

Single Zener Diodes Selection Notes

Select this component when a 39 V Zener reference is required in an SMA footprint. The ±5% tolerance suits standard regulation needs. Verify thermal constraints against the 50°C/W junction-to-lead resistance. Consider the 1.5 W power dissipation limit and derating curves for high-temperature environments exceeding ambient conditions.

Single Zener Diodes Part Context

This diode belongs to the SMAJ5925BHE3 through SMAJ5956BHE3 series, covering voltages from 10 V to 200 V. All variants share identical physical dimensions and electrical characteristics except for the specific Zener voltage breakdown point. The series is designed for general-purpose surface mount applications requiring robust transient protection.

Single Zener Diodes Replacement Considerations

SMAJ5939BQ-TP is identified as a manufacturer-recommended substitute.

Single Zener Diodes FAQ

What is the marking code for the SMAJ5939BHE3-TP?

The cathode marking code for this device is 39B.

What is the maximum reverse current specified for this voltage?

The maximum reverse current is 1 µA when measured at a reverse voltage of 29.7 V.