Microchip Technology 1PMT5932AE3/TR13

Overview

1PMT5932AE3/TR13 from Microsemi is a 20 V, ±5% tolerance surface-mount Zener diode in the Powermite® package, rated for 3.0 W DC power dissipation at TAB 1 = 60°C, with 14 Ω dynamic impedance at 18.7 mA test current and thermal resistance of 30°C/W junction-to-TAB1 - used for precision voltage regulation and overvoltage protection in compact DC power rails.

For engineers reviewing the 1PMT5932AE3/TR13 datasheet, 1PMT5932AE3/TR13 pinout, 1PMT5932AE3/TR13 application, or 1PMT5932AE3/TR13 equivalent, key selection criteria include Zener voltage tolerance, power derating above 60°C, thermal path to PCB copper, and compatibility with EIA-481 tape-and-reel automated placement.

Technical Context

This Zener diode operates in reverse breakdown mode with tightly controlled voltage regulation across its specified test current range (IZT = 18.7 mA). Its Powermite® package integrates a full metallic bottom and locking tab to enhance thermal conduction and mechanical stability during reflow soldering.

It exhibits low reverse leakage (IR ≤ 1 µA at VR = 15.2 V), 16 kV HBM ESD rating, and stable performance from –55°C to +150°C junction temperature - enabling use in industrial power supplies and automotive body electronics where thermal cycling and electrostatic robustness are critical.

Key Specifications

Pinout & Package

Package: Powermite® (DO-216AA), molded surface-mount package with full metallic bottom and integral heat-sink locking tab; cathode designated by TAB 1.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SMF20A and BZX84-C20, the 1PMT5932AE3/TR13 uniquely combines 3.0 W continuous power, 14 Ω dynamic impedance, and 30°C/W thermal resistance in a surface-mount package - making it suitable for high-stability, high-power shunt regulation where thermal management and voltage precision are jointly critical.

Availability

1PMT5932AE3/TR13 is available at Aetrix Electronics and suitable for industrial power supplies, automotive body electronics, telecom DC-DC converters, and medical diagnostic equipment requiring stable component supply and traceable sourcing.

Supply support for 1PMT5932AE3/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, mixed-signal, and radiation-hardened components for aerospace, defense, and industrial markets.

The Powermite® Zener diode product line was designed for high-power density surface-mount voltage regulation in space-constrained, thermally demanding applications - emphasizing thermal efficiency, mechanical robustness, and process compatibility with automated manufacturing.

FAQ

What is the Zener voltage tolerance for 1PMT5932AE3/TR13?

The 1PMT5932AE3/TR13 has a nominal Zener voltage of 20 V with a standard tolerance of ±5%, measured at IZT = 18.7 mA and TAB temperature of 30°C. Tighter tolerances (±2% and ±1%) are available with suffixes C and D respectively, but the E3 suffix indicates the standard ±5% version. This tolerance directly impacts regulation accuracy in precision reference designs using the 1PMT5932AE3/TR13.

How is thermal management handled for 1PMT5932AE3/TR13 in PCB layout?

The 1PMT5932AE3/TR13 relies on TAB 1 as its primary thermal path, with a specified junction-to-TAB thermal resistance of 30°C/W. Effective thermal management requires soldering TAB 1 to a minimum 100 mm² copper pour with ≥2 thermal vias to inner ground planes. Without this, the 3.0 W rating cannot be sustained - derating begins above 60°C TAB temperature. The 1PMT5932AE3/TR13's metallic bottom and locking tab are engineered specifically to maximize this conduction path.

Can 1PMT5932AE3/TR13 be used in place of through-hole Zener diodes like 1N5248B?

No - the 1PMT5932AE3/TR13 is not a drop-in replacement for 1N5248B (20 V, 500 mW, DO-35). While both regulate at 20 V, the 1PMT5932AE3/TR13 delivers 3.0 W continuous power and requires surface-mount thermal design, whereas 1N5248B is limited to 0.5 W and uses axial lead thermal paths. Substituting the 1PMT5932AE3/TR13 without revising PCB layout and thermal copper will cause overheating and premature failure.

What does the "TR13" suffix mean in 1PMT5932AE3/TR13?

The "TR13" suffix in 1PMT5932AE3/TR13 indicates tape-and-reel packaging per EIA-481 standard on a 13-inch reel containing 12,000 units - intended for high-volume automated SMT assembly. It does not affect electrical specifications. The "E3" denotes ±5% Zener voltage tolerance and RoHS-compliant finish. Together, "E3/TR13" specifies the commercial-grade, production-ready variant of the 1PMT5932AE3/TR13.

Is 1PMT5932AE3/TR13 suitable for automotive under-hood applications?

Yes - the 1PMT5932AE3/TR13 is qualified for operation from –55°C to +150°C junction temperature and features >16 kV HBM ESD rating, making it suitable for under-hood automotive applications such as body control modules and engine control peripheral regulation. Its Powermite® package resists thermal cycling stress, and the full metallic bottom prevents flux entrapment during reflow - critical for automotive-grade manufacturing yield. Always verify system-level thermal design when deploying the 1PMT5932AE3/TR13 in such environments.