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

Taiwan Semiconductor Corporation FR301G

Name: FR301G
Brand: Taiwan Semiconductor Corporation
SKU: FR301G
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: FR301G

Manufacturer:: Taiwan Semiconductor Corporation

Category:: Single Diodes

Package:: DO-201AD, Axial

Datasheet:: FR301G.pdf

Description:: DIODE GEN PURP 50V 3A DO201AD

Quantity:: RFQ Add To RFQ list

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Inventory:5,714

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Product details

Overview

FR301G from Taiwan Semiconductor is a 3A, 50V fast recovery rectifier diode in DO-201AD package, featuring 1.3V max forward voltage at 3A and 150ns reverse recovery time, used in DC-DC converters and switching-mode power supplies for efficient unidirectional current control.

For engineers reviewing the FR301G datasheet, FR301G pinout, FR301G application, or FR301G equivalent, key selection criteria include its 50V repetitive peak reverse voltage, 125A surge rating, AEC-Q101 qualification option (H-suffix), thermal resistance of 35°C/W, and compatibility with lead-free reflow soldering per J-STD-002.

Technical Context

The FR301G employs a single-die silicon PN junction structure optimized for fast recovery (150ns) and low conduction loss, enabling high-frequency operation in SMPS topologies. Its 50V V_RRM and 3A average forward current rating target mid-voltage, medium-power rectification where switching speed and thermal efficiency are critical.

Thermal performance is defined by a junction-to-ambient resistance of 35°C/W under standard mounting conditions, and the device operates across –55°C to +150°C junction temperature range. Reverse leakage remains ≤5µA at 25°C and ≤100µA at 125°C, supporting stable operation in thermally demanding environments.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	50 V - Maximum repetitive reverse voltage before breakdown; sets upper limit for circuit blocking capability
I_F	3 A - Continuous average forward current; defines steady-state power handling capacity
I_FSM	125 A - Non-repetitive surge current (8.3ms half-sine); supports inrush and fault transient tolerance
V_F (max)	1.3 V @ 3A, 25°C - Forward voltage drop; directly determines conduction loss and thermal load
t_rr	150 ns - Reverse recovery time; enables operation up to ~1–2 MHz switching frequencies
R_θJA	35 °C/W - Junction-to-ambient thermal resistance; informs heatsinking requirements for 3A continuous use
Junction Temp	–55°C to +150°C - Operational temperature envelope; supports automotive under-hood and industrial ambient conditions

Pinout & Package

DO-201AD axial-leaded package with cathode band marking; leads are pure tin plated and solderable per J-STD-002. Polarity is unambiguous: banded end = cathode.

Pin/Terminal	Circuit Role	Design Meaning
Anode (unbanded end)	Forward current entry point	Connects to lower-potential side (e.g., transformer secondary center-tap or switch node)
Cathode (banded end)	Forward current exit point	Connects to output filter capacitor or positive rail; carries full load current to load

Key Features

Feature	Design Value
Fast recovery time	150 ns - Enables high-frequency switching (>500 kHz) with minimal switching loss and EMI
Low forward voltage	1.3 V max @ 3A - Reduces conduction loss by ~15% vs. standard rectifiers, improving system efficiency
AEC-Q101 qualified option	FR301GH variant available - Meets stress test requirements for automotive power electronics
Robust surge rating	125 A I_FSM - Withstands repeated start-up surges and short-circuit transients without degradation
Halogen-free & RoHS	Complies with IEC 61249-2-21 and EU RoHS - Supports environmentally compliant manufacturing and end-of-life handling

Applications

DC-DC Converters	Switching Inverters
Use Scenario: Secondary-side rectification in isolated flyback or forward converters delivering 5–24V outputs at up to 75W. IC Role / Device Role / Timing Role: Unidirectional current valve converting high-frequency AC from transformer secondary into regulated DC output. Use Value: 150ns t_rr minimizes reverse recovery charge loss, while 1.3V V_F maintains >88% efficiency at 3A load.	Use Scenario: Output stage rectification in single-phase H-bridge inverters for motor drives and UPS systems. IC Role / Device Role / Timing Role: Freewheeling and commutation path for inductive loads during PWM dead-time intervals. Use Value: 125A I_FSM withstands motor stall currents; DO-201AD mechanical robustness ensures reliability under vibration.
Automotive Power Supplies	Industrial SMPS
Use Scenario: Input rectification in 12V/24V automotive DC-DC modules powering infotainment and ADAS ECUs. IC Role / Device Role / Timing Role: Primary AC/DC interface handling battery-supplied ripple and load dump transients. Use Value: AEC-Q101-qualified FR301GH variant provides validated reliability for under-hood temperature cycling and humidity exposure.	Use Scenario: Output rectification in 48V telecom and server PSUs operating at 200–500kHz switching frequency. IC Role / Device Role / Timing Role: High-efficiency energy transfer element in synchronous or quasi-resonant topologies. Use Value: 35°C/W R_θJA allows 3A continuous operation on standard PCB copper without forced air cooling.

DC-DC Converters

Switching Inverters

Use Scenario: Secondary-side rectification in isolated flyback or forward converters delivering 5–24V outputs at up to 75W.

IC Role / Device Role / Timing Role: Unidirectional current valve converting high-frequency AC from transformer secondary into regulated DC output.

Use Value: 150ns t_rr minimizes reverse recovery charge loss, while 1.3V V_F maintains >88% efficiency at 3A load.

Use Scenario: Output stage rectification in single-phase H-bridge inverters for motor drives and UPS systems.

IC Role / Device Role / Timing Role: Freewheeling and commutation path for inductive loads during PWM dead-time intervals.

Use Value: 125A I_FSM withstands motor stall currents; DO-201AD mechanical robustness ensures reliability under vibration.

Automotive Power Supplies

Industrial SMPS

Use Scenario: Input rectification in 12V/24V automotive DC-DC modules powering infotainment and ADAS ECUs.

IC Role / Device Role / Timing Role: Primary AC/DC interface handling battery-supplied ripple and load dump transients.

Use Value: AEC-Q101-qualified FR301GH variant provides validated reliability for under-hood temperature cycling and humidity exposure.

Use Scenario: Output rectification in 48V telecom and server PSUs operating at 200–500kHz switching frequency.

IC Role / Device Role / Timing Role: High-efficiency energy transfer element in synchronous or quasi-resonant topologies.

Use Value: 35°C/W R_θJA allows 3A continuous operation on standard PCB copper without forced air cooling.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
STTH3L06S	600V V_RRM, 3A, 75ns t_rr, TO-220AC package	Higher voltage rating and faster recovery, but larger footprint and higher thermal mass	Select when >50V blocking or <100ns t_rr required; not drop-in due to package and pinout mismatch
ON Semi MUR305	50V V_RRM, 3A, 50ns t_rr, DO-201AD package	Near-identical voltage/current rating but significantly faster recovery and lower V_F (1.15V)	Preferred for highest-efficiency 50V SMPS; same footprint and polarity, but requires layout verification for reduced EMI

Compared with STTH3L06S and MUR305, the FR301G offers balanced cost-performance for 50V applications with proven thermal behavior in DO-201AD, whereas STTH3L06S targets higher-voltage systems and MUR305 delivers superior speed at marginally higher cost.

Availability

FR301G is available at Aetrix Electronics and suitable for DC-DC converters, switching inverters, and automotive power supplies requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for FR301G 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 global industrial, computing, and automotive markets since 1979.

The FR301G belongs to TSC's FR30xG fast recovery rectifier family, designed specifically for high-efficiency, high-reliability AC/DC and DC/DC conversion in space-constrained and thermally demanding applications.

FAQ

What is the maximum junction temperature rating for the FR301G?

The FR301G has a maximum junction temperature (T_J) rating of +150°C, with a minimum of –55°C. This wide operating range supports deployment in automotive engine compartments and industrial enclosures where ambient temperatures exceed 85°C. Derating curves in the FR301G datasheet specify that continuous forward current must be reduced linearly above 25°C ambient to maintain safe junction temperature.

Is the FR301G RoHS and halogen-free compliant?

Yes, the FR301G is fully RoHS compliant and halogen-free per IEC 61249-2-21. The molding compound meets UL 94V-0 flammability rating, and the pure tin-plated leads are solderable per J-STD-002. These compliance attributes are confirmed in Taiwan Semiconductor's official documentation for the FR301G product family and apply to all standard FR301G variants.

Does the FR301G have AEC-Q101 qualification?

The base FR301G is not AEC-Q101 qualified; however, the FR301GH variant - identical in electrical and thermal specifications - is explicitly qualified to AEC-Q101. The "H" suffix denotes qualification, and both parts share the same DO-201AD package and marking format except for the suffix. Designers targeting automotive applications should specify FR301GH.

What is the reverse recovery time (t_rr) of the FR301G and how is it measured?

The FR301G has a reverse recovery time (t_rr) of 150 ns, measured under conditions of I_F = 0.5 A, I_R = 1.0 A, and I_rr = 0.25 A per the JEDEC standard test circuit. This value is specified in the FR301G datasheet and reflects performance at 25°C ambient; t_rr increases slightly at elevated junction temperatures but remains within 200 ns up to 125°C.

Can the FR301G replace a standard 1N4007 rectifier in a 50V design?

The FR301G can replace a 1N4007 in 50V designs where faster switching and lower loss are needed, but not as a blind drop-in. While both are DO-201AD packaged, the FR301G's 150ns t_rr and 1.3V V_F reduce switching loss and heat generation versus the 1N4007's 30 µs t_rr and ~1.1V V_F at low current. Layout changes may be needed to manage higher-frequency ringing.

FR301G Specifications

Product attributes: Attribute value

Manufacturer:: Taiwan Semiconductor Corporation

Series:: -

Package/Case:: DO-201AD, Axial

Packaging:: Tape & Reel (TR)

Product Status:: Active

Technology:: Standard

Voltage - DC Reverse (Vr) (Max):: 50 V

Current - Average Rectified (Io):: 3A

Voltage - Forward (Vf) (Max) @ If:: 1.3 V @ 3 A

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

Reverse Recovery Time (trr):: 150 ns

Current - Reverse Leakage @ Vr:: 5 µA @ 50 V

Capacitance @ Vr, F:: 30pF @ 4V, 1MHz

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: DO-201AD

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

FR301G FAQ

1.How can I place an order for FR301G through Aetrix?

Please submit a Request for Quotation (RFQ) for FR301G 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 FR301G reliable?

The price and inventory of FR301G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for FR301G is usually 5 days.

3.What payment methods are accepted for FR301G?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for FR301G transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for FR301G?

FR301G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your FR301G 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 FR301G?

For technical support, including FR301G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your FR301G requirements.

6.How does Aetrix verify that FR301G is sourced from the original manufacturer or authorized distributors?

All FR301G 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 FR301G meets industry standards.

7.What is the process for return or replacement of FR301G?

All FR301G units undergo pre-shipment inspection (PSI). If there is an issue with FR301G, 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 FR301G part is unused and in its original packaging.

Return procedure for FR301G:

1.Submit a request within 90 days.

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

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