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

Taiwan Semiconductor Corporation FR154G-T

Name: FR154G-T
Brand: Taiwan Semiconductor Corporation
SKU: FR154G-T
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: FR154G-T

Manufacturer:: Taiwan Semiconductor Corporation

Category:: Single Diodes

Package:: DO-204AC, DO-15, Axial

Datasheet:: FR154G-T.pdf

Description:: 150NS, 1.5A, 400V, FAST RECOVERY

Quantity:: RFQ Add To RFQ list

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Inventory:3,919

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Product details

Overview

FR154G-T from Taiwan Semiconductor is a fast recovery rectifier diode with 400 V repetitive peak reverse voltage (V_RRM), 1.5 A average forward current (I_F), and 150 ns reverse recovery time (t_rr) measured at I_F = 0.5 A, I_R = 1.0 A, I_rr = 0.25 A - used in high-frequency switching power supplies for efficient AC/DC conversion.

For engineers reviewing the FR154G-T datasheet, FR154G-T pinout, FR154G-T application, or FR154G-T equivalent, key selection criteria include its DO-204AC (DO-15) package, 1.3 V max forward voltage at 1.5 A, 5 µA max reverse leakage at 25°C, 50 A surge rating, and suitability for DC-DC converters and SMPS where fast recovery and low conduction loss are critical.

Technical Context

The FR154G-T employs a single-die, glass-passivated PN junction optimized for fast recovery (t_rr = 150 ns) and low forward voltage drop. Its thermal resistance R_θJA is 60°C/W, enabling operation up to 150°C junction temperature under defined PCB copper area conditions.

It is rated for repetitive reverse voltages up to 400 V (V_RRM) and supports 8.3 ms half-sine surge currents up to 50 A (I_FSM). Reverse leakage remains ≤5 µA at 25°C and ≤100 µA at 125°C, supporting stable performance across industrial ambient ranges.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	400 V - maximum non-repetitive reverse voltage the device blocks reliably in circuit
I_F	1.5 A - continuous average forward current capability at 75°C case temperature
t_rr	150 ns - measured recovery time under specified test conditions (I_F=0.5A, I_R=1.0A, I_rr=0.25A), critical for minimizing switching losses
V_F (max)	1.3 V - maximum forward voltage at 1.5 A and 25°C, directly impacts conduction loss and thermal design
I_R (max)	5 µA at 25°C - reverse leakage current limiting standby power loss in high-impedance bias networks
I_FSM	50 A - peak non-repetitive surge current tolerance, supports inrush and transient overload handling
R_θJA	60 °C/W - junction-to-ambient thermal resistance on standard FR-4 with 1-inch² copper pad, defines heatsinking requirement

Pinout & Package

Package: DO-204AC (DO-15), axial leaded, glass-passivated, RoHS-compliant, halogen-free molding compound (UL 94V-0), cathode indicated by band.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Forward current entry point	Connected to lower-potential side of AC input or secondary winding; must handle full I_F and I_FSM
Cathode	Forward current exit / reverse blocking terminal	Connected to output rail or switching node; withstands full V_RRM during off-state

Key Features

Feature	Design Value
Glass passivated junction	Enhances long-term reliability and moisture resistance without requiring conformal coating
Low V_F (≤1.3 V @ 1.5 A)	Reduces conduction loss and improves efficiency in high-duty-cycle SMPS designs
Fast t_rr (150 ns)	Minimizes reverse recovery charge (Q_rr) and associated switching losses in 50–500 kHz converters
50 A I_FSM rating	Supports robust startup and fault tolerance in offline power supplies without external fusing
DO-15 mechanical compatibility	Enables drop-in replacement in legacy designs using industry-standard footprint and soldering profiles

Applications

AC/DC Adapter Power Supply	DC-DC Converter Secondary Rectification
Use Scenario: 12 V/2 A offline adapter converting universal AC input to regulated DC output. IC Role / Device Role / Timing Role: Fast recovery rectifier in bridge or single-phase output stage, conducting during positive half-cycles and blocking reverse voltage. Use Value: 150 ns t_rr and 1.3 V V_F reduce switching losses and improve efficiency over standard recovery diodes, meeting Level VI efficiency requirements.	Use Scenario: Isolated flyback converter in industrial sensor module with 24 V input and 5 V/1 A isolated output. IC Role / Device Role / Timing Role: Output rectifier synchronizing with transformer reset; conducts only when secondary voltage polarity allows. Use Value: Low I_R (5 µA) minimizes no-load power draw, while 400 V V_RRM provides margin against reflected transients in unregulated topologies.
Switching Inverter Auxiliary Supply	LED Driver Input Rectification
Use Scenario: Auxiliary 15 V supply for gate drivers and control ICs in a 3-phase IGBT inverter. IC Role / Device Role / Timing Role: Half-wave rectifier feeding capacitor-input filter; operates at line frequency but benefits from fast recovery to suppress ringing. Use Value: 50 A I_FSM withstands capacitor inrush; glass passivation ensures reliability in thermally cycling motor drive environments.	Use Scenario: Non-isolated buck-boost LED driver for street lighting operating from 100–305 VAC input. IC Role / Device Role / Timing Role: Input-stage rectifier in voltage-doubler or full-wave configuration before PFC stage. Use Value: 400 V V_RRM supports 305 VAC peak (≈430 V), and 150°C T_J rating enables operation in enclosed, high-ambient luminaires.

AC/DC Adapter Power Supply

DC-DC Converter Secondary Rectification

Use Scenario: 12 V/2 A offline adapter converting universal AC input to regulated DC output.

IC Role / Device Role / Timing Role: Fast recovery rectifier in bridge or single-phase output stage, conducting during positive half-cycles and blocking reverse voltage.

Use Value: 150 ns t_rr and 1.3 V V_F reduce switching losses and improve efficiency over standard recovery diodes, meeting Level VI efficiency requirements.

Use Scenario: Isolated flyback converter in industrial sensor module with 24 V input and 5 V/1 A isolated output.

IC Role / Device Role / Timing Role: Output rectifier synchronizing with transformer reset; conducts only when secondary voltage polarity allows.

Use Value: Low I_R (5 µA) minimizes no-load power draw, while 400 V V_RRM provides margin against reflected transients in unregulated topologies.

Switching Inverter Auxiliary Supply

LED Driver Input Rectification

Use Scenario: Auxiliary 15 V supply for gate drivers and control ICs in a 3-phase IGBT inverter.

IC Role / Device Role / Timing Role: Half-wave rectifier feeding capacitor-input filter; operates at line frequency but benefits from fast recovery to suppress ringing.

Use Value: 50 A I_FSM withstands capacitor inrush; glass passivation ensures reliability in thermally cycling motor drive environments.

Use Scenario: Non-isolated buck-boost LED driver for street lighting operating from 100–305 VAC input.

IC Role / Device Role / Timing Role: Input-stage rectifier in voltage-doubler or full-wave configuration before PFC stage.

Use Value: 400 V V_RRM supports 305 VAC peak (≈430 V), and 150°C T_J rating enables operation in enclosed, high-ambient luminaires.

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	600 V V_RRM, 1.1 A I_F, 75 ns t_rr, SOD-123FL package	Higher voltage rating but lower current; surface-mount only	Select when board space is constrained and higher V_RRM margin is needed, but derate I_F to 1.1 A
ES1D-E3/57T	200 V V_RRM, 1 A I_F, 35 ns t_rr, DO-214AA (SMA) package	Lower voltage and current; faster recovery but less rugged	Choose for low-voltage, high-frequency DC-DC outputs where 400 V rating is unnecessary

Compared with STTH1L06S and ES1D-E3/57T, the FR154G-T offers balanced 400 V/1.5 A/150 ns performance in through-hole DO-15 format - ideal for cost-sensitive, thermally demanding, or serviceable power supplies where axial leads and proven ruggedness are prioritized.

Availability

FR154G-T is available at Aetrix Electronics and suitable for AC/DC adapters, DC-DC converters, and switching inverters requiring stable component supply, consistent parametric performance, and long-term manufacturing continuity.

Supply support for FR154G-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 diodes, and MOSFETs for industrial and consumer applications.

The FR15xG-T series was designed specifically for cost-effective, high-reliability fast recovery rectification in mainstream switching power supplies - emphasizing rugged surge handling, thermal stability, and compatibility with standard DO-15 assembly processes.

FAQ

What is the maximum junction temperature rating for FR154G-T?

The FR154G-T has a maximum junction temperature (T_J) rating of +150°C, verified per absolute maximum ratings table. This allows reliable operation in enclosed power supplies or high-ambient environments when thermal design accounts for its 60°C/W junction-to-ambient resistance. Derating curves in the FR151G-T–FR157G-T datasheet confirm usable I_F down to 0 A at 150°C case temperature.

Does FR154G-T have a halogen-free construction?

Yes, the FR154G-T uses halogen-free molding compound compliant with IEC 61249-2-21, as explicitly stated in the FEATURES section of the official Taiwan Semiconductor datasheet. This supports environmental compliance for RoHS and WEEE-directed products without compromising mechanical robustness or flammability rating (UL 94V-0).

What is the reverse recovery time test condition for FR154G-T?

The reverse recovery time (t_rr) of 150 ns for FR154G-T is measured under the specific condition: forward current I_F = 0.5 A, reverse current I_R = 1.0 A, and reverse recovery current I_rr = 0.25 A - as defined in the ELECTRICAL SPECIFICATIONS table. This differs from typical 1.5 A test conditions used for other family members and reflects its optimized switching behavior at partial load.

Is FR154G-T compatible with lead-free reflow soldering?

Yes, FR154G-T features pure tin-plated leads qualified per J-STD-002 for solderability, and its DO-204AC package is rated for standard lead-free reflow profiles (peak ≤260°C). The UL 94V-0 molding compound and glass passivation ensure integrity through multiple thermal cycles without delamination or parameter shift.

How does FR154G-T differ from FR155G-T in practical design?

FR154G-T is rated for 400 V V_RRM, while FR155G-T is rated for 600 V - a 50% higher blocking voltage. Both share identical I_F (1.5 A), I_FSM (50 A), and package (DO-15), but FR155G-T has slower t_rr (250 ns vs. 150 ns). Choose FR154G-T when 400 V margin suffices and faster recovery is prioritized; select FR155G-T for higher-voltage inputs or where surge robustness outweighs switching speed.

FR154G-T Specifications

Product attributes: Attribute value

Manufacturer:: Taiwan Semiconductor Corporation

Series:: -

Package/Case:: DO-204AC, DO-15, Axial

Packaging:: Tape & Reel (TR)

Product Status:: Active

Technology:: Standard

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

Current - Average Rectified (Io):: 1.5A

Voltage - Forward (Vf) (Max) @ If:: 1.3 V @ 1.5 A

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

Reverse Recovery Time (trr):: 150 ns

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

Capacitance @ Vr, F:: 20pF @ 4V, 1MHz

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: DO-204AC (DO-15)

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

FR154G-T FAQ

1.How can I place an order for FR154G-T through Aetrix?

Please submit a Request for Quotation (RFQ) for FR154G-T 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 FR154G-T reliable?

The price and inventory of FR154G-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for FR154G-T is usually 5 days.

3.What payment methods are accepted for FR154G-T?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for FR154G-T transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for FR154G-T?

FR154G-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your FR154G-T 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 FR154G-T?

For technical support, including FR154G-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your FR154G-T requirements.

6.How does Aetrix verify that FR154G-T is sourced from the original manufacturer or authorized distributors?

All FR154G-T 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 FR154G-T meets industry standards.

7.What is the process for return or replacement of FR154G-T?

All FR154G-T units undergo pre-shipment inspection (PSI). If there is an issue with FR154G-T, 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 FR154G-T part is unused and in its original packaging.

Return procedure for FR154G-T:

1.Submit a request within 90 days.

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

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