Taiwan Semiconductor Corporation F1T5G A1G

Overview

F1T5G from Taiwan Semiconductor is a 1A, 600V fast recovery rectifier diode in TS-1 package, featuring 250 ns reverse recovery time, 1.3 V max forward voltage at 1 A, and 5 µA max reverse leakage at 25°C. It serves as a primary output rectifier in DC-DC converters for industrial power supplies.

For engineers reviewing the F1T5G datasheet, F1T5G pinout, F1T5G application, or F1T5G equivalent, key selection criteria include repetitive peak reverse voltage (600 V), surge current capability (30 A), thermal resistance (90 °C/W), junction temperature range (–55 to +150 °C), and AEC-Q101 qualification availability in variant F1T5GH.

Technical Context

This single-die, glass-passivated fast recovery rectifier uses planar junction technology to achieve low forward voltage and controlled reverse recovery behavior. Its 250 ns trr and 15 pF junction capacitance support high-frequency switching up to several hundred kHz in SMPS topologies.

The TS-1 package provides UL 94V-0 mold compound, pure tin-plated leads compliant with J-STD-002, and JESD 201 Class 2 whisker resistance. Polarity is marked by a cathode band; device weight is 0.200 g.

Key Specifications

Pinout & Package

TS-1 package: molded plastic case with axial leads; cathode indicated by band; lead finish: pure tin; RoHS and halogen-free compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STTH1R06 and MUR106, the F1T5G offers optimal balance of speed (250 ns), conduction loss (≤1.3 V), and compact TS-1 packaging-making it ideal for space-constrained, cost-sensitive industrial and telecom power supplies where moderate switching frequency suffices.

Availability

F1T5G is available at Aetrix Electronics and suitable for DC-DC converters, industrial switch-mode power supplies, and telecom wall adapters requiring stable component supply across production lifecycles.

Supply support for F1T5G 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 consumer markets since 1979.

The F1T5G belongs to TSC's F1TxG fast recovery rectifier family, designed specifically for high-efficiency, high-reliability AC/DC and DC/DC conversion in cost-sensitive, thermally constrained applications.

FAQ

What is the maximum repetitive peak reverse voltage (VRRM) for F1T5G?

The F1T5G has a VRRM of 600 V, verified per Taiwan Semiconductor's H2104 datasheet. This rating defines the highest instantaneous reverse voltage the device can block repeatedly without breakdown. Designers must ensure peak circuit voltage-including ringing and transients-stays below this value, typically applying ≥20% margin for reliability. The F1T5G is part of a series spanning 50 V to 1000 V, with F1T5G specifically designated for 600 V systems such as 48 V telecom and industrial DC distribution.

Does F1T5G have AEC-Q101 qualification?

The base F1T5G is not AEC-Q101 qualified; however, the variant F1T5GH is explicitly qualified per AEC-Q101 Rev D. This distinction is marked in the ordering code-the "H" suffix denotes qualification. F1T5GH undergoes stress testing including temperature cycling, high-temperature operating life, and unbiased highly accelerated stress testing to validate suitability for automotive under-hood applications. For non-automotive use, F1T5G remains fully compatible in form, fit, and function.

What is the reverse recovery time (trr) of F1T5G and how is it measured?

The F1T5G has a reverse recovery time (trr) of 250 ns, measured under IF = 0.5 A, IR = 1.0 A, and Irr = 0.25 A per the H2104 datasheet. This test condition reflects typical switching behavior in flyback and forward converters. The trr value directly impacts switching loss and EMI; a 250 ns figure positions the F1T5G between standard and ultrafast rectifiers-ideal for 100–300 kHz operation where excessive speed would increase cost without benefit. No derating is required for trr across its rated temperature range.

What package type does F1T5G use and what are its mechanical features?

F1T5G uses the TS-1 package: a molded plastic axial-leaded case with UL 94V-0 flammability rating, pure tin-plated leads compliant with J-STD-002 solderability, and JESD 201 Class 2 whisker resistance. The cathode is marked by a visible band; device weight is approximately 0.200 g. TS-1 provides a compact alternative to DO-41 and TO-220AC, enabling high-density layouts while maintaining robust thermal and mechanical performance for reflow and wave soldering processes.

How does the forward voltage (VF) of F1T5G compare to similar 1A rectifiers?

F1T5G specifies a maximum forward voltage of 1.3 V at 1 A and 25°C, which is competitive among fast recovery rectifiers in its class. For comparison, ON Semiconductor's MUR106 specifies 1.7 V max, while STMicroelectronics' STTH1R06 specifies 1.25 V typ (1.5 V max). The F1T5G's 1.3 V VF balances conduction loss reduction against cost and speed-lower than standard recovery diodes but slightly higher than premium ultrafast types. This makes F1T5G especially effective in medium-frequency, medium-power applications where thermal management is constrained.