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Home > Products > Discrete Semiconductor Products > Diodes > Rectifiers > Single Diodes

Taiwan Semiconductor Corporation F1T4G

Name: F1T4G
Brand: Taiwan Semiconductor Corporation
SKU: F1T4G
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: F1T4G

Manufacturer:: Taiwan Semiconductor Corporation

Category:: Single Diodes

Package:: T-18, Axial

Datasheet:: F1T4G.pdf

Description:: DIODE GEN PURP 400V 1A TS-1

Quantity:: RFQ Add To RFQ list

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Inventory:2,495

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Product details

Overview

F1T4G from Taiwan Semiconductor is a 1A, 400V fast recovery rectifier diode in TS-1 package, featuring 150 ns reverse recovery time, 1.3 V max forward voltage at 1 A, and 30 A surge capability - used in DC-DC converters and switching inverters where compact size and low conduction loss are critical.

For engineers reviewing the F1T4G datasheet, F1T4G pinout, F1T4G application, or F1T4G equivalent, key selection factors include its 400 V V_RRM, TS-1 surface-mount footprint, AEC-Q101 qualification option (F1T4GH), thermal resistance of 90 °C/W, and cathode-band polarity marking for reliable board-level assembly.

Technical Context

The F1T4G is a single-die, glass-passivated silicon junction rectifier optimized for high-frequency switching applications. Its 150 ns trr and low 15 pF junction capacitance enable efficient operation in 50–500 kHz SMPS topologies, while the pure tin-plated leads ensure J-STD-002 solderability.

Rated for 150 °C maximum junction temperature and -55 °C to +150 °C storage, the device supports automotive-grade reliability when ordered as F1T4GH. The TS-1 package provides UL 94V-0 molding compound and meets JESD201 Class 2 whisker resistance.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	400 V - Maximum repetitive reverse voltage; defines safe blocking capability in 400 V bus applications
I_F	1 A continuous - Rated average forward current; determines thermal design margin at ambient ≤75 °C
t_rr	150 ns - Reverse recovery time at I_F = 0.5 A, I_R = 1.0 A; enables stable operation up to ~300 kHz switching
V_F (max)	1.3 V @ 1 A, 25 °C - Forward voltage drop; directly impacts conduction loss and thermal rise in power stage
I_FSM	30 A - Non-repetitive surge rating (8.3 ms half-sine); supports inrush and fault-current handling
R_θJA	90 °C/W - Junction-to-ambient thermal resistance; requires ≥25 mm² copper pad for full 1 A rating
C_J	15 pF @ 1 MHz, 4 V - Junction capacitance; limits high-frequency noise coupling and EMI generation

Pinout & Package

TS-1 package: surface-mount, single-ended anode-cathode configuration with cathode band marking; 0.200 g weight; UL 94V-0 molded compound; pure tin-plated leads.

Pin/Terminal	Circuit Role	Design Meaning
Anode (lead 1)	Forward current entry	Connected to lower-potential side (e.g., ground or source) in rectification path
Cathode (lead 2)	Forward current exit / reverse blocking terminal	Marked by visible band; connects to output rail or switch node; withstands 400 V reverse bias

Key Features

Feature	Design Value
Fast recovery (150 ns)	Reduces switching losses and EMI in high-frequency DC-DC converters operating above 100 kHz
Glass passivated junction	Enhances moisture resistance and long-term reliability under thermal cycling and humid environments
Low V_F (≤1.3 V)	Lowers conduction loss by ~15% vs. standard 1A rectifiers, improving efficiency in 5–24 V output stages
AEC-Q101 qualified option	F1T4GH variant meets automotive stress test requirements for under-hood and body electronics
TS-1 surface-mount footprint	Enables automated placement and reflow; compatible with IPC-7351B SO-8-like land pattern

Applications

DC-DC Converter	Switching Inverter
Use Scenario: Secondary-side synchronous rectification in isolated 12 V → 5 V/3.3 V buck-derived converters. IC Role / Device Role / Timing Role: Fast recovery rectifier conducting during low-side switch on-time; blocks reverse current during high-side conduction. Use Value: 150 ns t_rr minimizes dead-time overlap loss; 1.3 V V_F reduces average conduction loss to <1.3 W at 1 A.	Use Scenario: Output freewheeling path in 48 V input H-bridge motor drive inverters. IC Role / Device Role / Timing Role: Unidirectional current path across inductive load; clamps flyback voltage during PWM off-cycle. Use Value: 30 A I_FSM handles peak motor stall currents; 400 V V_RRM accommodates 48 V bus transients up to 350 V.
Automotive Body Control Module	Industrial Power Supply
Use Scenario: Reverse polarity protection and load dump suppression in 12 V BCM power inputs. IC Role / Device Role / Timing Role: Series-connected rectifier blocking reverse battery connection; conducts normal forward supply current. Use Value: AEC-Q101-qualified F1T4GH variant ensures 15-year field life; 150 °C T_JMAX supports under-dash mounting.	Use Scenario: Output rectification in 24 V industrial SMPS with 200 kHz fixed-frequency control. IC Role / Device Role / Timing Role: Primary output rectifier in flyback or forward converter secondary winding. Use Value: 90 °C/W R_θJA allows full 1 A rating on standard 2-layer PCB; RoHS/halogen-free compliance meets IEC 61249-2-21.

DC-DC Converter

Switching Inverter

Use Scenario: Secondary-side synchronous rectification in isolated 12 V → 5 V/3.3 V buck-derived converters.

IC Role / Device Role / Timing Role: Fast recovery rectifier conducting during low-side switch on-time; blocks reverse current during high-side conduction.

Use Value: 150 ns t_rr minimizes dead-time overlap loss; 1.3 V V_F reduces average conduction loss to <1.3 W at 1 A.

Use Scenario: Output freewheeling path in 48 V input H-bridge motor drive inverters.

IC Role / Device Role / Timing Role: Unidirectional current path across inductive load; clamps flyback voltage during PWM off-cycle.

Use Value: 30 A I_FSM handles peak motor stall currents; 400 V V_RRM accommodates 48 V bus transients up to 350 V.

Automotive Body Control Module

Industrial Power Supply

Use Scenario: Reverse polarity protection and load dump suppression in 12 V BCM power inputs.

IC Role / Device Role / Timing Role: Series-connected rectifier blocking reverse battery connection; conducts normal forward supply current.

Use Value: AEC-Q101-qualified F1T4GH variant ensures 15-year field life; 150 °C T_JMAX supports under-dash mounting.

Use Scenario: Output rectification in 24 V industrial SMPS with 200 kHz fixed-frequency control.

IC Role / Device Role / Timing Role: Primary output rectifier in flyback or forward converter secondary winding.

Use Value: 90 °C/W R_θJA allows full 1 A rating on standard 2-layer PCB; RoHS/halogen-free compliance meets IEC 61249-2-21.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
STTH1L06S	1 A, 600 V, 75 ns t_rr, TO-277 package, higher V_F (1.7 V)	Better voltage margin but slower recovery than F1T4G in 400 V designs	Select when 600 V blocking is required and layout allows TO-277 footprint
MBR140SFT1G	1 A, 40 V, Schottky, 0.55 V V_F, 110 °C T_JMAX	Lower loss at low voltage, but unsuitable for >100 V reverse conditions	Use only in ≤40 V systems where ultra-low V_F outweighs voltage limitation

Compared with STTH1L06S and MBR140SFT1G, the F1T4G delivers optimal balance of 400 V rating, 150 ns speed, and TS-1 SMT compatibility - making it preferred for space-constrained 12–48 V industrial and automotive converters requiring AEC-Q101 compliance.

Availability

F1T4G is available at Aetrix Electronics and suitable for DC-DC converters, switching inverters, and automotive body control modules requiring stable component supply, consistent parametric performance, and traceable sourcing across production volumes.

Supply support for F1T4G 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, automotive, and consumer markets since 1979.

The F1T4G belongs to TSC's F1TxG fast recovery rectifier family, designed specifically for high-efficiency, high-reliability AC/DC and DC/DC power conversion in space- and thermally constrained applications.

FAQ

What is the maximum repetitive peak reverse voltage (V_RRM) for the F1T4G?

The F1T4G has a V_RRM of 400 V, as confirmed in the Absolute Maximum Ratings table across all versions of the F1T1G–F1T7G series. This value is fixed per part number and defines the highest reverse voltage the device can block repeatedly without breakdown. Designers must ensure system transient voltages remain below this rating, including safety margins for ringing and overshoot.

Does the F1T4G have AEC-Q101 qualification?

The base F1T4G is not AEC-Q101 qualified; however, the F1T4GH variant - identical in electrical and mechanical specs except for added automotive stress testing - is fully AEC-Q101 qualified. Both share the same TS-1 package, 400 V rating, and 150 ns t_rr; only the 'H' suffix denotes qualification.

What is the reverse recovery time (t_rr) of the F1T4G and under what test conditions?

The F1T4G has a typical reverse recovery time of 150 ns, measured under conditions of I_F = 0.5 A, I_R = 1.0 A, and I_rr = 0.25 A, as specified in the Electrical Specifications table. This value applies strictly to the F1T4G and adjacent variants (F1T1G–F1T4G); higher-voltage variants show longer t_rr.

What package type does the F1T4G use and what are its key mechanical attributes?

The F1T4G uses the TS-1 surface-mount package: a single-ended, two-terminal outline with cathode band marking, UL 94V-0 molding compound, pure tin-plated leads compliant with J-STD-002, and JESD201 Class 2 whisker resistance. Its weight is approximately 0.200 g, and it requires standard reflow profiles for lead-free assembly.

How does the forward voltage (V_F) of the F1T4G compare to similar 1 A rectifiers?

The F1T4G 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. This V_F is lower than many alternatives (e.g., STTH1L06S at 1.7 V), contributing to reduced conduction loss and improved thermal performance in continuous 1 A operation.

F1T4G Specifications

Product attributes: Attribute value

Manufacturer:: Taiwan Semiconductor Corporation

Series:: -

Package/Case:: T-18, Axial

Packaging:: Tape & Reel (TR)

Product Status:: Active

Technology:: Standard

Voltage - DC Reverse (Vr) (Max):: 400 V

Current - Average Rectified (Io):: 1A

Voltage - Forward (Vf) (Max) @ If:: 1.3 V @ 1 A

Speed:: Fast Recovery =< 500ns, > 200mA (Io)

Reverse Recovery Time (trr):: 150 ns

Current - Reverse Leakage @ Vr:: 5 µA @ 400 V

Capacitance @ Vr, F:: 15pF @ 4V, 1MHz

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: TS-1

Operating Temperature - Junction:: -55°C ~ 150°C

F1T4G FAQ

1.How can I place an order for F1T4G through Aetrix?

Please submit a Request for Quotation (RFQ) for F1T4G on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for F1T4G reliable?

The price and inventory of F1T4G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for F1T4G is usually 5 days.

3.What payment methods are accepted for F1T4G?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for F1T4G transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for F1T4G?

F1T4G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your F1T4G order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for F1T4G?

For technical support, including F1T4G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your F1T4G requirements.

6.How does Aetrix verify that F1T4G is sourced from the original manufacturer or authorized distributors?

All F1T4G products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that F1T4G meets industry standards.

7.What is the process for return or replacement of F1T4G?

All F1T4G units undergo pre-shipment inspection (PSI). If there is an issue with F1T4G, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The F1T4G part is unused and in its original packaging.

Return procedure for F1T4G:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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