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

Taiwan Semiconductor Corporation FR155G-T

Name: FR155G-T
Brand: Taiwan Semiconductor Corporation
SKU: FR155G-T
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: FR155G-T

Manufacturer:: Taiwan Semiconductor Corporation

Category:: Single Diodes

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

Datasheet:: FR155G-T.pdf

Description:: 250NS, 1.5A, 600V, FAST RECOVERY

Quantity:: RFQ Add To RFQ list

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Inventory:3,936

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Product details

Overview

FR155G-T from Taiwan Semiconductor is a 1.5A, 600V fast recovery rectifier diode in DO-204AC (DO-15) package, featuring 250 ns reverse recovery time, 1.3 V max forward voltage at 1.5 A, and 5 µA max reverse leakage at 25°C - used in switching-mode DC/DC converters requiring efficient unidirectional current control.

For engineers reviewing the FR155G-T datasheet, FR155G-T pinout, FR155G-T application, or FR155G-T equivalent, key selection criteria include peak repetitive reverse voltage (600 V), surge current capability (50 A), thermal resistance (60 °C/W), junction temperature range (–55 to +150 °C), and RoHS/halogen-free compliance for industrial power conversion designs.

Technical Context

The FR155G-T is a single-die, glass-passivated silicon PN junction rectifier optimized for high-frequency switching applications. Its 250 ns trr and low VF enable reduced switching losses in SMPS topologies, while the DO-15 package supports through-hole mounting with pure tin-plated leads compliant with J-STD-002 solderability.

Thermal performance is defined by R_θJA = 60 °C/W and T_J(max) = 150 °C, enabling operation up to 1.5 A average forward current at ambient temperatures ≤75 °C per derating curve. Reverse leakage remains ≤100 µA at 125 °C, supporting stable performance in thermally demanding environments.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	600 V - maximum repetitive reverse voltage; defines safe blocking capability in 400–600 V DC bus applications
I_F	1.5 A - continuous average forward current; sets steady-state conduction rating at T_A ≤ 75 °C
I_FSM	50 A - non-repetitive surge current (8.3 ms half-sine); supports inrush and fault transient handling
t_rr	250 ns - reverse recovery time at I_F = 0.5 A, I_R = 1.0 A, I_rr = 0.25 A; enables >100 kHz switching frequency use
V_F	≤1.3 V - max forward voltage at I_F = 1.5 A, T_J = 25 °C; limits conduction loss to ≤1.95 W under full load
I_R	≤5 µA - max reverse leakage at rated V_R, T_J = 25 °C; ensures minimal standby power loss
R_θJA	60 °C/W - junction-to-ambient thermal resistance; requires ≥0.5 cm² copper pad for full 1.5 A rating

Pinout & Package

Package: DO-204AC (DO-15), axial leaded, glass-passivated, cathode indicated by band. Weight ≈ 0.400 g. UL 94V-0 molding compound; JESD 201 Class 1A whisker resistant.

Pin/Terminal	Circuit Role	Design Meaning
Anode (lead without band)	Forward current entry point	Connected to lower-potential side (e.g., transformer secondary or switch node return)
Cathode (lead with band)	Forward current exit / reverse blocking terminal	Connected to output rail or filter capacitor positive; blocks reverse voltage up to 600 V

Key Features

Feature	Design Value
Glass passivated junction	Enhances moisture resistance and long-term reliability in humid or industrial environments
Low V_F (≤1.3 V @ 1.5 A)	Reduces conduction loss by ~15% vs. standard recovery rectifiers, improving efficiency in 12–48 V DC/DC stages
Fast t_rr = 250 ns	Minimizes switching loss and EMI generation in 50–200 kHz SMPS designs
RoHS & halogen-free	Meets IEC 61249-2-21; supports environmentally compliant manufacturing and end-of-life recycling
50 A I_FSM rating	Withstands cold-start surges and short-circuit transients without degradation in offline adapters

Applications

DC/DC Converter Primary Side	Switch-Mode Inverter Output Stage
Use Scenario: High-efficiency isolated flyback converter delivering 24 V/1.2 A from 375 V DC bus in telecom power supply. IC Role / Device Role / Timing Role: Fast recovery rectifier on secondary winding, synchronizing with primary-side MOSFET switching at 100 kHz. Use Value: 250 ns t_rr prevents reverse recovery tail current, reducing diode-induced switching loss and snubber stress.	Use Scenario: Single-phase H-bridge inverter driving 400 W BLDC motor with 600 V DC link. IC Role / Device Role / Timing Role: Freewheeling diode across each IGBT, conducting during dead-time and inductive kickback. Use Value: 600 V V_RRM and 50 A I_FSM ensure robust commutation without avalanche breakdown during motor phase reversal.
Industrial AC/DC Adapter	LED Driver Secondary Rectification
Use Scenario: 36 W universal-input (85–265 V AC) adapter powering PLC I/O modules. IC Role / Device Role / Timing Role: Output rectifier in quasi-resonant forward converter operating at 65 kHz. Use Value: Low 5 µA I_R at 25 °C maintains <1 mW no-load loss, meeting Level VI efficiency requirements.	Use Scenario: Constant-current LED driver for street lighting (72 V string, 700 mA). IC Role / Device Role / Timing Role: Main output rectifier converting high-frequency transformer output to DC. Use Value: 1.3 V V_F limits rectifier dissipation to <0.9 W, enabling compact heatsink-free design in sealed outdoor housing.

DC/DC Converter Primary Side

Switch-Mode Inverter Output Stage

Use Scenario: High-efficiency isolated flyback converter delivering 24 V/1.2 A from 375 V DC bus in telecom power supply.

IC Role / Device Role / Timing Role: Fast recovery rectifier on secondary winding, synchronizing with primary-side MOSFET switching at 100 kHz.

Use Value: 250 ns t_rr prevents reverse recovery tail current, reducing diode-induced switching loss and snubber stress.

Use Scenario: Single-phase H-bridge inverter driving 400 W BLDC motor with 600 V DC link.

IC Role / Device Role / Timing Role: Freewheeling diode across each IGBT, conducting during dead-time and inductive kickback.

Use Value: 600 V V_RRM and 50 A I_FSM ensure robust commutation without avalanche breakdown during motor phase reversal.

Industrial AC/DC Adapter

LED Driver Secondary Rectification

Use Scenario: 36 W universal-input (85–265 V AC) adapter powering PLC I/O modules.

IC Role / Device Role / Timing Role: Output rectifier in quasi-resonant forward converter operating at 65 kHz.

Use Value: Low 5 µA I_R at 25 °C maintains <1 mW no-load loss, meeting Level VI efficiency requirements.

Use Scenario: Constant-current LED driver for street lighting (72 V string, 700 mA).

IC Role / Device Role / Timing Role: Main output rectifier converting high-frequency transformer output to DC.

Use Value: 1.3 V V_F limits rectifier dissipation to <0.9 W, enabling compact heatsink-free design in sealed outdoor housing.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
STTH1L60S	1.2 A, 600 V, t_rr = 110 ns, TO-220AC package	Higher speed but lower current rating; requires heatsink above 0.8 A	Preferred where ultra-fast recovery (<150 ns) is critical and board space allows TO-220 mounting
ON Semi MUR160	1.0 A, 600 V, t_rr = 50 ns, DO-41 package	Lower I_F and smaller DO-41 footprint; limited to ≤0.8 A continuous	Suitable for low-power auxiliary supplies where size constraints outweigh current needs

Compared with STTH1L60S and MUR160, the FR155G-T uniquely balances 1.5 A current capacity, 600 V blocking, 250 ns recovery, and DO-15 manufacturability - making it optimal for cost-sensitive, medium-power industrial SMPS where thermal headroom and through-hole assembly are priorities.

Availability

FR155G-T is available at Aetrix Electronics and suitable for DC/DC converters, switching-mode inverters, and industrial AC/DC adapters requiring stable component supply, consistent parametric performance, and long-term production continuity.

Supply support for FR155G-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 rectifiers, TVS diodes, MOSFETs, and bipolar transistors since 1979.

The FR15xG-T series was developed to deliver high-reliability, cost-optimized fast recovery rectifiers for mainstream industrial and consumer power conversion - emphasizing thermal robustness, solderability, and environmental compliance without premium packaging.

FAQ

What is the maximum junction temperature rating for FR155G-T?

The FR155G-T has a maximum junction temperature (T_J(max)) of +150 °C, with operational storage temperature ranging from –55 °C to +150 °C. This rating allows sustained 1.5 A conduction when ambient temperature is maintained ≤75 °C using standard PCB copper area per the derating curve in the FR151G-T–FR157G-T datasheet.

Does FR155G-T meet RoHS and halogen-free requirements?

Yes, the FR155G-T is RoHS compliant and halogen-free per IEC 61249-2-21. The molding compound is UL 94V-0 rated, and the pure tin-plated leads satisfy J-STD-002 solderability standards - verified in Taiwan Semiconductor's B2105 revision documentation.

What is the reverse recovery time (t_rr) specification for FR155G-T?

The FR155G-T has a typical reverse recovery time (t_rr) of 250 ns, measured under conditions I_F = 0.5 A, I_R = 1.0 A, and I_rr = 0.25 A. This value is confirmed in the Electrical Specifications table of the official FR151G-T–FR157G-T datasheet (Version B2105, Page 2).

Can FR155G-T replace FR154G-T or FR156G-T in an existing design?

No - FR155G-T is rated for 600 V V_RRM, whereas FR154G-T is 400 V and FR156G-T is 800 V. Substitution requires verification of voltage margin, especially under line transients or reflected spikes. The FR155G-T must not be used where 800 V blocking is required, nor is it over-specified for 400 V systems without evaluating thermal trade-offs.

What is the marking code printed on the FR155G-T device body?

The FR155G-T is marked "FR155G" on the device body, followed by date code (YWW format) and factory code (F). The "G" suffix denotes green (halogen-free) compound, consistent with Taiwan Semiconductor's ordering nomenclature per the B2105 datasheet page 6.

FR155G-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):: 600 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):: 250 ns

Current - Reverse Leakage @ Vr:: 5 µA @ 600 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

FR155G-T FAQ

1.How can I place an order for FR155G-T through Aetrix?

Please submit a Request for Quotation (RFQ) for FR155G-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 FR155G-T reliable?

The price and inventory of FR155G-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for FR155G-T is usually 5 days.

3.What payment methods are accepted for FR155G-T?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for FR155G-T transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for FR155G-T?

FR155G-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your FR155G-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 FR155G-T?

For technical support, including FR155G-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your FR155G-T requirements.

6.How does Aetrix verify that FR155G-T is sourced from the original manufacturer or authorized distributors?

All FR155G-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 FR155G-T meets industry standards.

7.What is the process for return or replacement of FR155G-T?

All FR155G-T units undergo pre-shipment inspection (PSI). If there is an issue with FR155G-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 FR155G-T part is unused and in its original packaging.

Return procedure for FR155G-T:

1.Submit a request within 90 days.

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

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