Microchip Technology 1PMT5930C/TR7

Overview

1PMT5930C/TR7 from Microsemi is a 16 V, ±1% tolerance Zener diode in the Powermite® surface-mount package, rated for 3.0 W DC power dissipation at TAB 1 = 60°C, with 10 Ω dynamic impedance at 23.4 mA test current and thermal resistance of 30°C/W junction-to-TAB1. It serves as a precision voltage reference or overvoltage clamp in power supply regulation and protection circuits.

For engineers reviewing the 1PMT5930C/TR7 datasheet, 1PMT5930C/TR7 pinout, 1PMT5930C/TR7 application, or 1PMT5930C/TR7 equivalent, key selection criteria include its tight 1% Zener voltage tolerance, low 10 Ω dynamic impedance, full metallic bottom for flux-free soldering, integral heat sink locking tab, and ESD rating >16 kV HBM - all critical for high-reliability industrial and automotive power management designs.

Technical Context

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

The device exhibits low reverse leakage (≤1 µA at VR = 1 V), stable knee characteristics (IZK = 0.25 mA, ZZK = 600 Ω), and maintains performance across -55°C to +150°C junction temperature range - enabling use in thermally demanding environments without derating beyond datasheet limits.

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 BZX84-C16LT1G and SMBJ16A, the 1PMT5930C/TR7 uniquely combines 3.0 W continuous power, ±1% tolerance, and 10 Ω dynamic impedance in a thermally optimized surface-mount package - making it irreplaceable for high-stability, medium-power voltage reference and clamping roles where accuracy and thermal resilience are co-critical.

Availability

1PMT5930C/TR7 is available at Aetrix Electronics and suitable for industrial power supply regulation, automotive body control module protection, and telecom DC-DC converter feedback requiring stable component supply, long-lifecycle support, and traceable sourcing.

Supply support for 1PMT5930C/TR7 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 specifically to deliver high-power surface-mount voltage regulation with superior thermal performance and process compatibility - addressing the gap between low-power SMD Zeners and bulky through-hole alternatives.

FAQ

What is the Zener voltage tolerance for 1PMT5930C/TR7?

The "C" suffix in 1PMT5930C/TR7 denotes ±1% Zener voltage tolerance at IZT = 23.4 mA and TAB 1 = 30°C. This is tighter than the standard ±5% (suffix B) and supports precision applications like voltage references and feedback networks where minimal drift is critical. The 1PMT5930C/TR7 achieves this via post-package screening and binning, verified per Microsemi's MSC0995 Rev F test methodology.

How is thermal management handled in the 1PMT5930C/TR7 package?

The 1PMT5930C/TR7 uses the Powermite® package with TAB 1 as the cathode and primary thermal path. Its 30°C/W junction-to-TAB1 thermal resistance requires a minimum 10 mm² copper pad connected to TAB 1 for full 3.0 W dissipation at 60°C ambient. The full metallic bottom and locking tab ensure low-impedance conduction into the PCB, eliminating reliance on lead-frame convection alone - a key differentiator versus SOD-123 or SMA packages.

Is the 1PMT5930C/TR7 suitable for automotive applications?

Yes, the 1PMT5930C/TR7 is qualified for automotive use with a junction temperature range of -55°C to +150°C and compliance with AEC-Q101 stress testing requirements per Microsemi documentation. Its 16 V Zener voltage aligns with ISO 7637-2 transient immunity thresholds, and the >16 kV HBM ESD rating exceeds typical automotive assembly ESD controls. It is deployed in body control modules and power distribution units where stable clamping under thermal cycling is essential.

What does the "TR7" suffix indicate in 1PMT5930C/TR7?

The "TR7" suffix indicates tape-and-reel packaging per EIA-481 standard, with 3,000 units per 7-inch reel. This format ensures compatibility with high-speed pick-and-place equipment and supports automated SMT assembly. The reel configuration includes proper orientation marking (cathode TAB 1 facing outward), moisture sensitivity level (MSL) 1 rating, and humidity barrier bag packaging - all confirmed in Microsemi's packaging specification for the Powermite® family.

Can the 1PMT5930C/TR7 replace older through-hole Zener diodes like 1N5245B?

The 1PMT5930C/TR7 is not a direct drop-in replacement for 1N5245B due to differing package geometry and thermal interface requirements. While both provide ~16 V Zener regulation, the 1PMT5930C/TR7 delivers 3.0 W in DO-216AA versus 500 mW in DO-35, and requires a thermal pad under TAB 1. Designers must revise PCB layout to accommodate the Powermite® footprint and thermal pad - but gain significant size reduction, improved ESD robustness, and tighter voltage tolerance over the legacy part.