Taiwan Semiconductor Corporation FR301GH

Overview

FR301GH from Taiwan Semiconductor is a 3A, 50V fast recovery rectifier diode in DO-201AD package, featuring 1.3V max forward voltage at 3A, 125A surge capability, and AEC-Q101 qualification for automotive-grade reliability. It serves as the primary output rectifier in low-voltage DC-DC converters and switching power supplies.

For engineers reviewing the FR301GH datasheet, FR301GH pinout, FR301GH application, or FR301GH equivalent, key selection criteria include repetitive peak reverse voltage (50V), junction-to-ambient thermal resistance (35°C/W), reverse recovery time (150ns), and AEC-Q101 qualification status - all critical for high-efficiency, thermally constrained, and automotive-compliant designs.

Technical Context

This single-die fast recovery rectifier uses optimized PN-junction design to achieve 150ns reverse recovery time at IF = 0.5A, IR = 1.0A, Irr = 0.25A, enabling efficient operation in 50–500kHz switching topologies. Its 35°C/W R_θJA and 150°C maximum junction temperature support continuous 3A conduction with minimal heatsinking in compact layouts.

The device exhibits 5µA max reverse leakage at 25°C and 100µA at 125°C under rated V_RRM, ensuring stable blocking performance across automotive temperature ranges. Pure tin-plated leads meet J-STD-002 solderability and JESD201 Class 2 whisker resistance requirements.

Key Specifications

Pinout & Package

DO-201AD axial-leaded package with cathode band marking; 1.20g mass; UL 94V-0 molding compound; pure tin-plated leads.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STTH3L06S and MUR305, FR301GH uniquely combines 50V/3A rating, 150ns recovery, DO-201AD form factor, and AEC-Q101 qualification - making it the only option satisfying automotive thermal, surge, and compliance requirements in this footprint.

Availability

FR301GH is available at Aetrix Electronics and suitable for automotive body electronics, industrial 24V DC-DC converters, and consumer AC-DC adapters requiring stable component supply, long-term lifecycle assurance, and traceable AEC-Q101-compliant sourcing.

Supply support for FR301GH 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 global automotive, industrial, and consumer markets since 1979.

The FR301GH belongs to TSC's AEC-Q101-qualified fast recovery rectifier family, engineered specifically for high-reliability power conversion in automotive and harsh-environment industrial systems where surge robustness and thermal stability are critical.

FAQ

What is the maximum junction temperature rating for FR301GH?

The FR301GH has a maximum junction temperature (T_J) of +150°C, validated per AEC-Q101 stress testing. This rating allows continuous 3A operation in ambient temperatures up to 75°C on a standard 1-in² copper pad, with derating applied above that point per the forward current derating curve in the FR301G–FR307G datasheet.

Is FR301GH pin-compatible with standard DO-201AD rectifiers like 1N5408?

Yes, FR301GH uses the DO-201AD package with identical mechanical dimensions and axial lead configuration as 1N5408, enabling direct PCB footprint reuse. However, FR301GH offers faster recovery (150ns vs. ~2000ns), lower V_F (1.3V vs. ~1.2V), and AEC-Q101 qualification - requiring design validation for timing and thermal behavior despite mechanical compatibility.

Does FR301GH meet halogen-free and RoHS requirements?

Yes, FR301GH complies with both RoHS Directive 2011/65/EU and IEC 61249-2-21 halogen-free standards. The molding compound contains no brominated flame retardants, chlorine, or fluorine above threshold limits, and the pure tin-plated leads satisfy J-STD-002 solderability and JESD201 Class 2 whisker resistance requirements.

What is the reverse recovery time test condition for FR301GH?

The specified 150ns reverse recovery time (t_rr) for FR301GH is measured under IF = 0.5A, IR = 1.0A, and Irr = 0.25A, per JEDEC standard test circuit (Fig.6 in the FR301G–FR307G datasheet). This reflects real-world switching behavior in medium-frequency DC-DC converters, not idealized small-signal conditions.

Can FR301GH replace Schottky diodes in 5V output applications?

FR301GH can replace low-voltage Schottky diodes (e.g., 40V-rated) in 5V/3A applications where thermal runaway risk exists, as its silicon PN junction avoids the temperature-sensitive leakage of Schottky devices. While V_F is slightly higher (1.3V vs. ~0.5V), its 150°C T_J rating and AEC-Q101 qualification provide superior reliability in automotive and industrial environments where Schottkys may fail prematurely.