Taiwan Semiconductor Corporation FR307G

Overview

FR307G from Taiwan Semiconductor is a 3A, 1000V fast recovery rectifier diode in DO-201AD package, designed for high-efficiency switching power supplies requiring low forward voltage (1.3V max at 3A) and fast reverse recovery (500ns). It delivers high surge current capability (125A), operates up to 150°C junction temperature, and is used in DC-DC converters and industrial inverters.

For engineers reviewing the FR307G datasheet, FR307G pinout, FR307G application, or FR307G equivalent, key selection criteria include peak reverse voltage rating (1000V), thermal resistance (35°C/W), reverse recovery time (500ns), forward voltage drop, and AEC-Q101 qualification status where applicable.

Technical Context

The FR307G is a single-die, silicon planar junction fast recovery rectifier optimized for high-voltage switching-mode power conversion. Its 1000V V_RRM, 500ns trr, and 35°C/W R_θJA enable reliable operation in high-frequency flyback and forward converters with minimal switching loss.

It features pure tin-plated leads compliant with J-STD-002, UL 94V-0 molding compound, and cathode-band polarity marking. The device supports continuous forward current of 3A at 150°C junction temperature and withstands non-repetitive surge currents up to 125A (8.3ms half-sine).

Key Specifications

Pinout & Package

Package: DO-201AD - Axial-lead, molded plastic package with cathode band marking; 1.20g weight; UL 94V-0 rated compound; tin-plated leads solderable per J-STD-002.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STTH3L06S and MUR3100E, the FR307G offers balanced performance: 1000V rating matches high-line AC-DC inputs, 500ns t_rr suits 100–250kHz operation, and 1.3V V_F minimizes thermal stress-making it optimal for cost-sensitive industrial and automotive auxiliary supplies.

Availability

FR307G is available at Aetrix Electronics and suitable for DC-DC converters, switching inverters, and industrial SMPS requiring stable component supply with consistent DO-201AD packaging and 1000V/3A performance.

Supply support for FR307G 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

Taiwan Semiconductor Corporation (TSC) is a vertically integrated analog and discrete semiconductor manufacturer headquartered in Hsinchu, Taiwan, serving industrial, computing, and automotive markets since 1979.

The FR301G–FR307G series is part of TSC's high-reliability fast recovery rectifier product line, engineered specifically for robustness in high-voltage switching power conversion where thermal stability, surge immunity, and long-term parametric consistency are critical.

FAQ

What is the maximum junction temperature rating for the FR307G?

The FR307G has a maximum junction temperature (T_JMAX) of +150°C, verified per absolute maximum ratings in the official datasheet. This allows operation in high-ambient environments such as enclosed industrial power supplies or under-hood automotive locations. Derating curves confirm 3A continuous current is sustainable up to this limit with appropriate thermal management. The FR307G must be operated within this limit to ensure reliability and avoid permanent degradation.

Is the FR307G pin-compatible with other devices in the FR30xG family?

Yes, all FR301G through FR307G share identical DO-201AD package dimensions, axial lead configuration, and cathode-band polarity marking-ensuring mechanical and layout compatibility across the family. However, electrical parameters differ significantly: V_RRM ranges from 50V to 1000V, and t_rr varies from 150ns to 500ns. The FR307G must not be substituted with lower-voltage variants without verifying reverse voltage margin in the target circuit.

Does the FR307G meet automotive qualification standards?

The base FR307G is not AEC-Q101 qualified; however, the FR307GH variant-identical in all electrical and mechanical specifications except for added automotive reliability testing-is explicitly qualified per AEC-Q101. For automotive applications requiring qualification, FR307GH must be specified. The FR307G remains suitable for industrial and commercial systems where AEC-Q101 is not mandated.

What is the reverse recovery time (t_rr) of the FR307G and how is it measured?

The FR307G has a reverse recovery time (t_rr) of 500ns, measured under standardized conditions: I_F = 0.5A, I_R = 1.0A, I_rr = 0.25A, per JEDEC test methods. This value reflects the time required for minority carriers to clear after forward conduction, directly impacting switching losses in high-frequency converters. The FR307G's 500ns t_rr positions it between standard and ultrafast rectifiers, optimizing trade-offs for 100–250kHz designs.

How does the FR307G's forward voltage compare to similar 1000V rectifiers?

The FR307G specifies a maximum forward voltage (V_F) of 1.3V at 3A and 25°C-lower than many competing 1000V fast recovery rectifiers such as the MUR3100E (1.55V max). This 0.25V advantage reduces conduction loss by ~20% at full load, lowering thermal stress and improving overall efficiency in thermally constrained applications. The FR307G achieves this while maintaining 500ns t_rr and DO-201AD compatibility.