Microchip Technology 1N5352BE3/TR13

Overview

1N5352BE3/TR13 from Microsemi is a 5 W axial-leaded silicon Zener diode with nominal regulation voltage of 15 V, ±5% tolerance (B suffix), maximum dynamic impedance of 2.5 Ω at 75 mA test current, and maximum reverse current of 1.0 μA at 10.8 V. It delivers stable voltage reference in power supply feedback loops and overvoltage protection circuits across industrial temperature range.

For engineers reviewing the 1N5352BE3/TR13 datasheet, 1N5352BE3/TR13 pinout, 1N5352BE3/TR13 application, or 1N5352BE3/TR13 equivalent, key selection criteria include its 15 V Zener voltage, 5 W steady-state power rating at lead temperature <25°C, low 2.5 Ω dynamic impedance, 1.0 μA leakage at VR=10.8 V, and RoHS-compliant matte-tin plating per MIL-STD-750.

Technical Context

This device operates as a two-terminal voltage reference diode, conducting in reverse breakdown to maintain a stable 15 V across its terminals within ±5% tolerance. Its thermal resistance is 25 °C/W junction-to-lead (3/8" lead length) and 85 °C/W junction-to-ambient on FR4 board, enabling reliable operation up to +150°C storage temperature.

The 1N5352BE3/TR13 exhibits minimal voltage regulation drift (ΔVZ = 0.25 V between 10% and 50% of IZM), supports surge currents up to 6.3 A (8.3 ms half-sine), and maintains ≤1.2 V forward voltage at 1.0 A - critical for clamping and transient suppression roles where low conduction loss matters.

Key Specifications

Pinout & Package

Package: T-18 axial-leaded plastic case (void-free UL94V-0 epoxy), cathode indicated by band; leads plated with RoHS-compliant matte tin per MIL-STD-750 Method 2026.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar Zener diode applications.

Compared with 1N5352BRLG and MMSZ5245B-TP, the 1N5352BE3/TR13 uniquely combines 5 W power handling, axial-leaded T-18 package for mechanical robustness, and tape-and-reel (TR13) format for high-volume automated assembly - making it optimal for industrial power supply and protection modules requiring reliability and throughput.

Availability

1N5352BE3/TR13 is available at Aetrix Electronics and suitable for industrial power supplies, motor drive protection circuits, and programmable logic controller input conditioning requiring stable component supply and long-term lifecycle support.

Supply support for 1N5352BE3/TR13 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Microsemi (now part of Microchip Technology) is a U.S.-based semiconductor company specializing in high-reliability analog and mixed-signal components for aerospace, defense, and industrial markets.

The 1N53xxB series was designed specifically for ruggedized voltage regulation and transient suppression in harsh-environment power systems - emphasizing thermal stability, surge resilience, and JEDEC-standardized interchangeability.

FAQ

What is the Zener voltage tolerance of the 1N5352BE3/TR13?

The 1N5352BE3/TR13 has a Zener voltage tolerance of ±5%, indicated by the "B" suffix in its part number. This means its actual breakdown voltage falls within 14.25 V to 15.75 V at 75 mA test current and 25°C lead temperature. The e3 suffix confirms RoHS compliance, and TR13 denotes tape-and-reel packaging with 13-inch reels - all consistent with Microsemi's published specifications for this variant.

Does the 1N5352BE3/TR13 require dry packing before PCB assembly?

No, the 1N5352BE3/TR13 does not require dry packing prior to assembly. Its moisture sensitivity level is rated IPC/JEDEC J-STD-020B Level 1, meaning it can be stored indefinitely at ambient conditions without desiccant or baking. This simplifies logistics and eliminates pre-reflow bake steps - a verified feature confirmed in Microsemi's official datasheet revision D (2008).

What is the maximum surge current rating for the 1N5352BE3/TR13?

The 1N5352BE3/TR13 is rated for a maximum non-recurrent surge current (IZSM) of 6.3 A, defined as the peak value of an 8.3 ms half-sine waveform. This rating is validated under standard test conditions and reflects its suitability for transient suppression in industrial power rails where short-duration overvoltage events occur - as documented in the Electrical Characteristics table on page 1 of the Microsemi datasheet.

How does the dynamic impedance of the 1N5352BE3/TR13 affect regulation performance?

The 1N5352BE3/TR13 has a maximum dynamic impedance (ZZ) of 2.5 Ω at 75 mA test current. This low value ensures minimal voltage variation under changing load currents - directly improving regulation accuracy in feedback circuits. For example, a 100 mA load step induces only ~0.25 V shift, enabling tight output control in switch-mode power supplies where the 1N5352BE3/TR13 serves as the primary reference.

Is the 1N5352BE3/TR13 suitable for surface-mount assembly?

No, the 1N5352BE3/TR13 is not suitable for surface-mount assembly. It uses a T-18 axial-leaded package with 3/8" lead length, designed for through-hole mounting and manual or wave soldering. While it ships in tape-and-reel (TR13) format for automated handling, its physical form factor and lead geometry require hole placement and axial insertion - unlike SMD equivalents such as SMBJ5352B or MMSZ5245B.