Taiwan Semiconductor Corporation FR302GH

Overview

FR302GH from Taiwan Semiconductor is an AEC-Q101-qualified fast recovery rectifier diode in DO-201AD package, rated for 3A average forward current, 100V repetitive peak reverse voltage (V_RRM), and 125A non-repetitive surge current (I_FSM). It delivers low forward voltage drop (1.3V max at 3A, 25°C) and fast reverse recovery time (150 ns), optimized for DC-DC converters and switching-mode power supplies in automotive and industrial environments.

For engineers reviewing the FR302GH datasheet, FR302GH pinout, FR302GH application, or FR302GH equivalent, key selection criteria include its AEC-Q101 qualification, 100V V_RRM, 150 ns trr, DO-201AD mechanical compatibility, and thermal resistance of 35°C/W - all critical for high-reliability power conversion designs.

Technical Context

This single-die fast recovery rectifier uses a planar junction structure to achieve low conduction loss and controlled reverse recovery behavior. Its 150 ns trr (measured at I_F = 0.5A, I_R = 1.0A, I_rr = 0.25A) enables efficient operation in high-frequency switching topologies up to several hundred kHz.

The device operates across –55°C to +150°C junction temperature range and features pure tin-plated leads compliant with J-STD-002 solderability and JESD201 Class 2 whisker resistance. Its DO-201AD package meets UL 94V-0 flammability rating and supports surface-mount or through-hole assembly.

Key Specifications

Pinout & Package

DO-201AD axial-leaded package with cathode indicated by a band on the body. Leads are pure tin-plated, solderable per J-STD-002, and meet JESD201 Class 2 whisker resistance. Weight ≈1.20 g.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STTH3L06S and MUR3020CT, the FR302GH provides AEC-Q101 validation and DO-201AD compatibility for cost-sensitive, high-volume automotive and industrial rectification - trading some speed and voltage headroom for qualification assurance and footprint economy.

Availability

FR302GH is available at Aetrix Electronics and suitable for automotive ECUs, industrial motor drives, telecom power bricks, and consumer AC-DC adapters requiring stable component supply, long-term lifecycle support, and AEC-Q101-compliant sourcing.

Supply support for FR302GH 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 FR30xG family is designed specifically for high-efficiency, high-reliability power conversion - emphasizing fast recovery, low V_F, AEC-Q101 qualification, and robust thermal performance in standard discrete packages.

FAQ

What is the maximum junction temperature rating for FR302GH?

The FR302GH has a maximum junction temperature (T_J) of +150°C and a minimum of –55°C. This wide operating range supports deployment in under-hood automotive environments and high-ambient industrial settings. Derating curves in the FR301G–FR307G datasheet specify that continuous I_F must be reduced linearly above 75°C ambient to maintain safe junction temperatures. The FR302GH's 35°C/W R_θJA enables accurate thermal modeling for board-level design.

Is FR302GH pin-compatible with other FR30xG series devices?

Yes, all FR30xG devices - including FR302GH - share identical DO-201AD packaging, anode/cathode pinout, and mechanical dimensions. Voltage ratings differ across the series (e.g., FR301GH = 50 V, FR302GH = 100 V), but PCB footprints, solder profiles, and mounting methods remain fully interchangeable. This simplifies BOM consolidation and design reuse across multiple input voltage platforms while maintaining AEC-Q101 qualification.

What does the "H" suffix in FR302GH signify?

The "H" suffix in FR302GH explicitly denotes AEC-Q101 qualification per the Taiwan Semiconductor ordering code table. Unlike standard FR302G, the FR302GH variant undergoes extended stress testing - including HTGB, HTRB, temperature cycling, and ESD - to validate reliability for automotive electronic systems. This qualification is documented in TSC's AEC-Q101 certificate and applies to the full FR30xGH series, not just individual lots.

How does FR302GH compare to standard 1N540x rectifiers in switching applications?

The FR302GH offers significantly faster reverse recovery (150 ns vs. >2 µs for 1N5408) and lower forward voltage (1.3 V max vs. ~1.1 V typical but with much higher dynamic loss). In switching converters above 50 kHz, this translates to measurable reductions in switching loss, diode-induced EMI, and thermal rise. While 1N540x parts remain viable for line-frequency rectification, the FR302GH is engineered for high-frequency SMPS where efficiency and reliability are prioritized.

Does FR302GH require a heatsink in typical 3 A applications?

In most 3 A continuous applications with adequate PCB copper (≥1 in² 2 oz Cu on both sides), the FR302GH operates within thermal limits without an external heatsink - thanks to its 35°C/W R_θJA and low 1.3 V V_F. However, at full load in still-air environments above 60°C ambient, junction temperature may approach 150°C. Thermal simulation using the FR302GH's published derating curve and actual board layout is recommended; forced airflow or localized copper pours can eliminate need for added heatsinking.