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Taiwan Semiconductor Corporation FR301G R0G
- Part No.:
- FR301G R0G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-201AD, Axial
- Datasheet:
-
FR301G R0G.pdf
- Description:
- DIODE GEN PURP 50V 3A DO201AD
- Quantity:
- Payment:
- Shipping:
Inventory:2,869
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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, 150ns reverse recovery time, and 125A surge capability - deployed in DC-DC converters and switching-mode power supplies for high-efficiency AC/DC and DC/DC conversion.
For engineers reviewing the FR301G datasheet, FR301G pinout, FR301G application, or FR301G equivalent, key selection criteria include repetitive peak reverse voltage (50V), thermal resistance (35°C/W), junction temperature range (–55°C to +150°C), cathode-band polarity marking, and AEC-Q101 qualification availability in H-grade variants.
Technical Context
The FR301G is a single-die, planar-passivated silicon fast recovery rectifier optimized for high-frequency switching applications. Its 150ns trr and low 1.3V VF at 3A enable reduced conduction and switching losses in SMPS topologies.
It operates across –55°C to +150°C junction temperature, with 35°C/W junction-to-ambient thermal resistance and 125A non-repetitive surge rating (8.3ms half-sine), supporting robust transient handling in industrial and automotive-grade power stages.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| IF (Avg) | 3 A - continuous forward current rating defines maximum steady-state output current capability in rectification paths |
| VRRM | 50 V - peak reverse blocking voltage determines minimum input/output isolation margin in low-voltage DC-DC stages |
| trr | 150 ns - fast reverse recovery enables operation up to ~500 kHz switching frequencies with minimal switching loss |
| VF @ 3A | 1.3 V max - low forward drop reduces conduction loss and thermal load in high-current secondary-side rectifiers |
| IFSM | 125 A - surge rating supports inrush current tolerance during startup or fault transients without failure |
| RθJA | 35 °C/W - thermal resistance enables direct PCB-mount operation without heatsink in ≤2W dissipation designs |
| IR @ 25°C | 5 µA max - low leakage preserves efficiency in high-impedance hold-up or sensing circuits |
Pinout & Package
Package: DO-201AD - axial-lead, molded plastic case with pure tin-plated leads (J-STD-002 compliant), UL 94V-0 rated compound, cathode indicated by band, weight ≈1.20g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Lead 1) | Forward current entry point | Connected to lower-potential side (e.g., transformer secondary center-tap or switch node return) in half-wave or full-wave configurations |
| Cathode (Lead 2, banded end) | Forward current exit / reverse blocking terminal | Connected to output rail or filter capacitor positive; polarity band prevents reverse installation in high-reliability assemblies |
Key Features
| Feature | Design Value |
|---|---|
| Fast recovery (150 ns) | Enables efficient operation in 100–500 kHz SMPS without excessive switching loss or EMI from tail current |
| Low VF (1.3 V max @ 3A) | Reduces power dissipation by ~0.4W vs. standard rectifiers at 3A, lowering thermal stress on PCB traces and adjacent components |
| AEC-Q101 qualified option (FR301GH) | Validated for automotive power modules requiring extended temperature cycling, humidity, and mechanical shock compliance |
| RoHS & halogen-free | Meets IEC 61249-2-21 and global environmental directives for industrial and consumer electronics manufacturing |
| Junction temp range (–55°C to +150°C) | Supports deployment in under-hood automotive, outdoor telecom, and industrial motor drive environments |
Applications
| DC-DC Converter Secondary Rectification | Switching Mode Inverter Output Stage |
|---|---|
Use Scenario: High-frequency isolated DC-DC converter (e.g., 24V input to 5V/3A output) using flyback or forward topology. IC Role / Device Role / Timing Role: Fast recovery rectifier on secondary winding, converting high-frequency AC to regulated DC. Use Value: 150ns trr minimizes reverse recovery charge loss; 1.3V VF ensures ≥89% efficiency at full load with minimal heatsinking. | Use Scenario: Low-voltage AC output stage of a 3-phase inverter driving small BLDC motors or solenoids. IC Role / Device Role / Timing Role: Freewheeling/clamping diode across IGBT or MOSFET switches to manage inductive kickback. Use Value: 125A IFSM withstands motor stall surges; DO-201AD axial form factor allows direct through-hole mounting on compact inverter PCBs. |
| Industrial Power Supply Input Bridge | Automotive Body Control Module (BCM) Supply |
Use Scenario: 3A-rated auxiliary supply in programmable logic controller (PLC) power section. IC Role / Device Role / Timing Role: Single-diode in discrete bridge configuration for universal AC input rectification (with external diodes). Use Value: 50V VRRM provides sufficient margin over 36VAC RMS input; 35°C/W RθJA permits natural-convection cooling in sealed enclosures. | Use Scenario: 12V-to-5V buck-derived supply in BCM for microcontroller, CAN transceiver, and LED drivers. IC Role / Device Role / Timing Role: Output rectifier in synchronous or asynchronous buck secondary stage. Use Value: AEC-Q101-qualified variant (FR301GH) ensures reliability across –40°C to +125°C ambient; green compound meets automotive material compliance. |
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 (STMicroelectronics) | Same 3A/600V rating but higher VF (1.7V typ), slower trr (200ns), TO-220AC package | Requires heatsink above 1.5A; unsuitable for space-constrained DO-201AD layouts | Select when higher VRRM (600V) is required and board space allows TO-220 footprint |
| ES3D (ON Semiconductor) | 3A/200V, 35ns trr, SMC package, VF = 0.92V typ - faster and lower-loss but lower voltage rating | Better for 24–48V systems needing ultra-fast recovery; not suitable for 50V+ reverse stress | Select for high-frequency, low-VF priority in <200V applications where SMC surface-mount is preferred |
Compared with STTH3L06S and ES3D, the FR301G offers optimal balance of 50V rating, 150ns speed, DO-201AD through-hole compatibility, and cost-effective AEC-Q101 readiness - making it ideal for mid-power industrial and automotive auxiliary supplies where layout, thermal, and qualification constraints align.
Availability
FR301G is available at Aetrix Electronics and suitable for DC-DC converters, switching-mode inverters, and industrial power supplies requiring stable component supply, long-term BOM continuity, and RoHS-compliant 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 industrial, automotive, and consumer markets since 1979.
The FR301G belongs to TSC's FRxG fast recovery rectifier family, engineered specifically for high-efficiency, high-reliability power conversion in cost-sensitive yet thermally demanding applications - emphasizing low VF, controlled trr, and robust surge tolerance.
FAQ
What is the maximum junction temperature rating for the FR301G?
The FR301G has a maximum junction temperature (TJ) of +150°C and a minimum of –55°C. This wide operating range allows the FR301G to function reliably in harsh environments such as automotive under-hood locations or industrial control cabinets. Derating curves confirm usable current capacity down to zero amps at 150°C ambient, ensuring safe operation when thermal design margins are constrained.
Is the FR301G pin-compatible with other FR30xG series diodes?
Yes - all FR301G through FR307G share identical DO-201AD package dimensions, lead spacing, and anode/cathode pinout. The only differences are VRRM ratings (50V to 1000V) and reverse recovery time (150ns to 500ns). Therefore, FR301G can be substituted within the same family for lower-voltage designs without PCB changes, provided trr and leakage requirements remain acceptable.
Does the FR301G meet automotive qualification standards?
The base FR301G is not AEC-Q101 qualified, but the FR301GH variant is explicitly qualified per AEC-Q101. Both share identical electrical specs and DO-201AD packaging; the 'H' suffix denotes automotive-grade screening, including temperature cycling, humidity testing, and whisker resistance validation. For automotive body electronics or infotainment power rails, FR301GH is the designated qualified version.
What is the typical reverse recovery time (trr) of the FR301G and how is it measured?
The FR301G has a reverse recovery time (trr) of 150 ns, measured under standardized conditions: IF = 0.5 A, IR = 1.0 A, and Irr = 0.25 A, per JEDEC test method. This value reflects the time required for minority carriers to clear after forward conduction, directly impacting switching loss in high-frequency converters. The 150 ns trr enables stable operation up to ~500 kHz in well-designed layouts.
Can the FR301G be used in surface-mount designs?
No - the FR301G uses the axial-leaded DO-201AD package and is designed for through-hole mounting only. It lacks surface-mount terminations or land patterns. For SMT alternatives with similar ratings, consider ON Semiconductor's ES3D (SMC package) or Diodes Inc.'s GBU3K (GBU package), though these differ in trr, VF, and thermal performance. Board redesign is required to migrate from FR301G to any SMT rectifier.
FR301G R0G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- DO-201AD, Axial
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- 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 R0G FAQ
1.How can I place an order for FR301G R0G through Aetrix?
Please submit a Request for Quotation (RFQ) for FR301G R0G 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 R0G reliable?
The price and inventory of FR301G R0G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for FR301G R0G is usually 5 days.
3.What payment methods are accepted for FR301G R0G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for FR301G R0G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for FR301G R0G?
FR301G R0G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your FR301G R0G 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 R0G?
For technical support, including FR301G R0G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your FR301G R0G requirements.
6.How does Aetrix verify that FR301G R0G is sourced from the original manufacturer or authorized distributors?
All FR301G R0G 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 R0G meets industry standards.
7.What is the process for return or replacement of FR301G R0G?
All FR301G R0G units undergo pre-shipment inspection (PSI). If there is an issue with FR301G R0G, 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 R0G part is unused and in its original packaging.
Return procedure for FR301G R0G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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