Microchip Technology 1PMT5929A/TR13

Overview

1PMT5929A/TR13 from Microsemi is a 15 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 9.0 Ω dynamic impedance at 25 mA test current and 16 kV HBM ESD rating-used for precision voltage regulation and overvoltage protection in compact DC power rails.

For engineers reviewing the 1PMT5929A/TR13 datasheet, 1PMT5929A/TR13 pinout, 1PMT5929A/TR13 application, or 1PMT5929A/TR13 equivalent, key selection criteria include zener voltage tolerance, thermal resistance (30°C/W junction-to-TAB), reverse leakage (<1 µA at 11.4 V), knee current (0.25 mA), and compatibility with EIA-481 tape-and-reel automated assembly.

Technical Context

This Zener diode operates as a two-terminal voltage reference device, leveraging silicon PN-junction avalanche breakdown to maintain stable 15 V regulation across load and line variations. Its Powermite® package integrates a full metallic bottom and locking tab for direct thermal conduction to PCB copper, enabling 3.0 W dissipation without external heatsinking when mounted on ≥1 sq-in 2-oz copper.

The device exhibits low dynamic impedance (9.0 Ω) at I_ZT = 25 mA and tight knee behavior (I_ZK = 0.25 mA, Z_ZK = 600 Ω), supporting stable regulation even under light-load conditions. Reverse leakage remains ≤1 µA up to 11.4 V, ensuring minimal quiescent current draw in battery-powered systems.

Key Specifications

Pinout & Package

1PMT5929A/TR13 uses the DO-216 surface-mount package (Powermite®), featuring a molded body with full metallic bottom and integral heat-sink locking tab. Cathode is designated by TAB 1; anode is the opposite terminal. Mounting orientation is unrestricted.

Key Features

Applications

Equivalent & Alternatives

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

Compared with 1N5929B and BZX84-C15, the 1PMT5929A/TR13 delivers superior thermal performance (30°C/W vs. 50°C/W or unlisted), full SMT automation support, and guaranteed 16 kV HBM robustness-making it the only option qualified for industrial-grade 3.0 W shunt regulation in space-constrained environments.

Availability

1PMT5929A/TR13 is available at Aetrix Electronics and suitable for industrial power supplies, automotive control modules, medical sensor interfaces, and telecom line cards requiring stable component supply with full traceability and lifecycle management.

Supply support for 1PMT5929A/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 engineered for high-power density surface-mount voltage regulation in thermally demanding environments where traditional packages fail-targeting applications needing >2 W in <10 mm² footprint.

FAQ

What is the zener voltage tolerance for 1PMT5929A/TR13?

The 1PMT5929A/TR13 has a nominal zener voltage of 15 V with a standard tolerance of ±5%, measured at 25 mA test current and TAB temperature of 30°C. Tighter tolerances (±2% and ±1%) are available with suffixes C and D respectively, but the /TR13 variant ships with the standard ±5% grade unless otherwise specified.

Can 1PMT5929A/TR13 be used in place of a through-hole 1N5929B?

No-while both devices share identical electrical specifications (15 V, ±5%, 3.0 W), the 1PMT5929A/TR13 uses the DO-216 Powermite® surface-mount package with TAB 1 cathode and metallic bottom, whereas the 1N5929B uses DO-41 through-hole packaging. They are not pin-compatible or footprint-interchangeable; PCB redesign is required to substitute one for the other.

What is the maximum reverse leakage current for 1PMT5929A/TR13?

The maximum reverse leakage current for 1PMT5929A/TR13 is 1 µA at a reverse voltage of 11.4 V, tested at 30°C. This value is confirmed in the Microsemi MSC0995 datasheet and reflects worst-case leakage under specified conditions-critical for low-power standby circuits where quiescent current must remain sub-microamp.

How does the Powermite® package improve thermal performance of 1PMT5929A/TR13?

1PMT5929A/TR13 achieves a junction-to-TAB thermal resistance of 30°C/W thanks to its Powermite® package design: the full metallic bottom provides direct thermal conduction to PCB copper, and the locking tab acts as an integral heat sink. This enables full 3.0 W power dissipation at TAB = 60°C without external heatsinking-unachievable with standard SOD-123 or SMA packages.

Is 1PMT5929A/TR13 compatible with lead-free reflow profiles?

Yes-1PMT5929A/TR13 is qualified for standard lead-free reflow processes per JEDEC J-STD-020, with peak temperatures up to 260°C. The Powermite® package's molded construction and metallic bottom ensure mechanical integrity and solder joint reliability under repeated thermal cycling, making it suitable for high-volume automated assembly lines.