Microchip Technology 689-2P

Overview

689-2P from Microsemi is a fast recovery rectifier assembly in center-tap positive configuration, housed in an electrically isolated aluminum case. It delivers 15 A average DC output current at TC = 55 °C, supports 200 V VRWM, exhibits 500 ns reverse recovery time, and operates up to 150 °C junction temperature - used in high-reliability AC/DC front-end power supplies for industrial motor drives.

For engineers reviewing the 689-2P datasheet, 689-2P pinout, 689-2P application, or 689-2P equivalent, key selection criteria include its center-tap positive terminal arrangement, 200 V working peak reverse voltage, 500 ns trr, thermal resistance of 6.0 °C/W (junction-to-case), and RoHS-compliant matte tin terminations.

Technical Context

This device integrates two fast recovery diodes in a single aluminum package with internal center-tap connection, enabling full-wave rectification without external wiring. Its controlled avalanche characteristics and 150 A non-repetitive surge rating support robust operation under transient overloads in unregulated power stages.

The 689-2P uses a thermally optimized metal case with R_θJC = 6.0 °C/W, allowing direct heatsink mounting. Its 500 ns reverse recovery time and 1.2 V forward voltage at 10 A per leg are specified under standard pulse test conditions (300 µs, 2% duty cycle).

Key Specifications

Pinout & Package

Package: Aluminum case with electrically isolated terminals; weight ≈30 g; RoHS-compliant matte tin terminations; marking includes "AC", "+", "−", and part number.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar fast recovery rectifier applications.

Compared with VS-15EWH02-M3 and MBR15200CT, the 689-2P uniquely combines center-tap positive topology, 150 A surge capability, and electrically isolated aluminum packaging - making it optimal for space-constrained, thermally demanding, and safety-critical rectifier applications where mechanical integration and transient robustness are essential.

Availability

689-2P is available at Aetrix Electronics and suitable for industrial motor drives, uninterruptible power systems, medical imaging equipment, and test instrumentation requiring stable component supply, long-lifecycle availability, and traceable sourcing.

Supply support for 689-2P 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 Corporation (now part of Microchip Technology) is a U.S.-based semiconductor company specializing in high-reliability analog and mixed-signal ICs, power discretes, and radiation-hardened components.

The 689(e3) series was designed specifically for ruggedized AC/DC power conversion in industrial, medical, and aerospace systems where thermal performance, electrical isolation, and surge resilience are mission-critical.

FAQ

What is the maximum junction temperature rating for the 689-2P?

The 689-2P has a maximum junction temperature (T_J) rating of +150 °C, verified per Microsemi's RF01151 datasheet Rev A. This rating enables reliable operation in high-ambient environments such as enclosed motor drive cabinets or sealed medical power modules. Derating curves in Figure 3 confirm usable current output down to 10.5 A at TC = 100 °C. The 689-2P must be mounted to a heatsink capable of maintaining T_J ≤ 150 °C under worst-case load and ambient conditions.

Does the 689-2P have center-tap positive or negative configuration?

The 689-2P uses a center-tap positive configuration, denoted by the "P" suffix in its part number nomenclature. Its terminals are marked "AC" (center-tapped AC input), "+" (common cathode output), and "−" (common anode output). This arrangement delivers a positive DC output referenced to the "−" terminal, and is distinct from the "N" (center-tap negative) and "D" (doubler) variants in the same 689(e3) series. The 689-2P pinout is fixed and non-reversible.

Is the 689-2P RoHS compliant?

Yes, the 689-2P is RoHS compliant, indicated by the "e3" suffix in its full designation per Microsemi's part numbering system. Its terminations use matte tin plating, qualified for lead-free soldering at 260 °C for 10 seconds. The aluminum case and internal construction contain no restricted substances above EU RoHS thresholds. Compliance is documented in the RF01151 datasheet and supported by Microsemi's material declarations for the 689(e3) series.

What is the reverse recovery time (trr) specification for the 689-2P?

The 689-2P has a reverse recovery time (trr) of 500 ns, measured at IF = 1.0 A, IRM = 1.0 A, and IR(REC) = 0.5 A per leg, per the RF01151 datasheet. This value applies to both diode legs within the assembly and reflects fast recovery behavior suitable for 20–50 kHz switching frequencies in line-frequency rectifiers. Unlike ultrafast diodes with sub-100 ns trr, the 689-2P balances speed with controlled avalanche and thermal robustness - a key differentiator of the 689-2P.

Can the 689-2P replace a standard recovery rectifier like the 681-2P?

No, the 689-2P is not a direct replacement for the 681-2P due to fundamental differences in recovery speed and electrical behavior. While both share identical VRWM (200 V), package, and pinout, the 681-2P is a standard recovery rectifier with unspecified trr (not characterized), whereas the 689-2P is explicitly rated at 500 ns trr and features controlled avalanche. Substituting the 689-2P into a design validated for 681-2P may alter EMI, snubber requirements, and thermal distribution. Always verify system-level performance before interchanging 689-2P and 681-2P.