Taiwan Semiconductor Corporation FR205G-T

Overview

FR205G-T from Taiwan Semiconductor is a 2A, 600V fast recovery rectifier diode in DO-204AC (DO-15) package, featuring 250 ns reverse recovery time, 1.3 V max forward voltage at 2 A, and 55 A surge current capability-used in switching-mode power supplies and DC-DC converters.

For engineers reviewing the FR205G-T datasheet, FR205G-T pinout, FR205G-T application, or FR205G-T equivalent, key selection criteria include V_RRM = 600 V, I_F = 2 A, t_rr = 250 ns, thermal resistance R_θJA = 70 °C/W, and DO-15 mechanical compatibility with high-surge industrial power stages.

Technical Context

This single-die fast recovery rectifier uses glass-passivated junction technology to achieve low forward voltage and stable reverse leakage across temperature. Its 250 ns recovery time enables efficient operation in 50–100 kHz SMPS topologies without excessive switching loss.

The device supports continuous 2 A forward current at up to 150 °C junction temperature, with 55 A non-repetitive surge rating and 5 µA max reverse leakage at 25 °C-enabling robust performance in transient-prone input rectification and freewheeling paths.

Key Specifications

Pinout & Package

Package: DO-204AC (DO-15), axial leaded, glass-passivated silicon die, cathode indicated by band. Weight: 0.400 g.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STTH2R06 and ES2D, the FR205G-T provides optimal balance of 600 V blocking, 250 ns recovery, and 55 A surge tolerance-making it the preferred choice for cost-constrained, thermally demanding 50–65 kHz AC-DC and motor drive rectification where reliability under surge is critical.

Availability

FR205G-T is available at Aetrix Electronics and suitable for AC-DC front-end rectification, DC-DC converter output stages, and industrial motor drive snubbers requiring stable component supply and long-term manufacturing continuity.

Supply support for FR205G-T 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, specializing in power rectifiers, TVS devices, and MOSFETs since 1979.

The FR20xG-T series was designed specifically for high-reliability, cost-optimized switching power conversion-targeting industrial SMPS, UPS systems, and motor drives where surge resilience and thermal stability outweigh ultra-fast recovery requirements.

FAQ

What is the maximum repetitive peak reverse voltage (V_RRM) for FR205G-T?

The FR205G-T has a maximum repetitive peak reverse voltage (V_RRM) of 600 V, as confirmed in the Absolute Maximum Ratings table of the official Taiwan Semiconductor datasheet (Version B2105). This rating defines the highest reverse voltage the device can block repeatedly without breakdown during normal operation, making FR205G-T suitable for 400 VDC bus applications and 230 VAC input rectification with safety margin.

What is the reverse recovery time (t_rr) of FR205G-T, and how is it measured?

The reverse recovery time (t_rr) of FR205G-T is 250 ns, measured under conditions of I_F = 0.5 A, I_R = 1.0 A, and I_rr = 0.25 A, per the Electrical Specifications table. This value reflects the time required for the diode to transition from forward conduction to full reverse blocking, directly impacting switching loss in high-frequency converters-FR205G-T's 250 ns t_rr balances speed and ruggedness for 50–100 kHz designs.

Is FR205G-T RoHS compliant and halogen-free?

Yes, FR205G-T is RoHS compliant and halogen-free in accordance with IEC 61249-2-21, as explicitly stated in the FEATURES section of the Taiwan Semiconductor datasheet. The molding compound meets UL 94V-0 flammability rating, and the pure tin-plated leads are solderable per J-STD-002-ensuring FR205G-T meets environmental and assembly requirements for industrial and consumer electronics.

What is the junction-to-ambient thermal resistance (R_θJA) of FR205G-T?

The junction-to-ambient thermal resistance (R_θJA) of FR205G-T is 70 °C/W, specified under Thermal Performance in the datasheet. This value assumes standard PCB mounting with no added heatsink; achieving safe operation at 2 A continuous current requires at least 1.4 cm² of 1 oz copper pour on the anode/cathode pads to limit junction temperature rise to ≤100 °C at 70 °C ambient-critical for reliable FR205G-T deployment in enclosed power supplies.

Does FR205G-T have a defined polarity marking, and how is it identified?

Yes, FR205G-T uses a cathode band to indicate polarity, as documented in the MECHANICAL DATA section. The visible band on the DO-204AC (DO-15) package body identifies the cathode terminal, while the unmarked end is the anode. This marking aligns with industry-standard diode orientation and ensures correct placement in bridge configurations or freewheeling paths-misorientation would cause immediate forward conduction failure in most applications using FR205G-T.