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Taiwan Semiconductor Corporation FR302G-K
- Part No.:
- FR302G-K
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-201AD, Axial
- Datasheet:
-
FR302G-K.pdf
- Description:
- 150NS, 3A, 100V, FAST RECOVERY R
- Quantity:
- Payment:
- Shipping:
Inventory:6,244
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Product details
Overview
FR302G-K from Taiwan Semiconductor is a 3A, 100V fast recovery rectifier diode in DO-201AD package, featuring 150ns reverse recovery time, 1.3V max forward voltage at 3A, and 125A surge current capability. It serves as the primary output rectifier in low-voltage DC-DC converters and switching inverters where efficiency and thermal robustness are critical.
For engineers reviewing the FR302G-K datasheet, FR302G-K pinout, FR302G-K application, or FR302G-K equivalent, key selection criteria include VRRM=100V, trr=150ns, VF≤1.3V at IF=3A, TJ(max)=150°C, and DO-201AD mechanical compatibility with high-reliability power supply designs.
Technical Context
This single-die, axial-leaded fast recovery rectifier operates with a junction-to-ambient thermal resistance of 35°C/W and supports continuous forward current up to 3A at 25°C ambient. Its 150ns reverse recovery time enables use in 50–200 kHz switching topologies without excessive switching loss.
The device exhibits 5µA max reverse leakage at 25°C and 100µA at 125°C, with junction capacitance of 30pF at 4V reverse bias. Cathode polarity is marked by a visible band on the DO-201AD molded case.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 100 V - Maximum repetitive reverse voltage the diode blocks reliably in circuit |
| IF | 3 A - Continuous average forward current rating at 25°C ambient |
| trr | 150 ns - Reverse recovery time under IF=0.5A/IR=1.0A/Irr=0.25A test conditions |
| VF (max) | 1.3 V - Forward voltage drop at 3A and 25°C junction temperature, directly impacting conduction loss |
| IFSM | 125 A - Non-repetitive peak surge current tolerance for 8.3ms half-sine waveform |
| TJ(max) | 150 °C - Maximum allowable junction temperature for reliable long-term operation |
| RθJA | 35 °C/W - Thermal resistance from junction to ambient, used to calculate temperature rise under load |
Pinout & Package
Package: DO-201AD - Axial-leaded, molded plastic case with pure tin-plated leads compliant with J-STD-002 solderability and JESD 201 Class 1A whisker testing. Cathode indicated by band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (lead without band) | Forward current entry point | Connected to lower-potential side (e.g., transformer secondary center-tap or switch node) |
| Cathode (lead with band) | Forward current exit point | Connected to output rail or filter capacitor positive terminal; polarity marking is critical for correct PCB orientation |
Key Features
| Feature | Design Value |
|---|---|
| Fast recovery time | 150 ns - Enables efficient operation in medium-frequency SMPS without excessive switching loss or EMI |
| Low forward voltage | ≤1.3 V at 3A - Reduces conduction loss and improves system efficiency in 12–48V output stages |
| High surge current rating | 125 A - Withstands inrush and transient overloads common in industrial power supplies and motor drives |
| RoHS & halogen-free | Compliant per IEC 61249-2-21 - Meets environmental requirements for commercial and industrial end equipment |
| UL 94V-0 molding compound | Flame-retardant encapsulation - Supports safety certification in enclosed power assemblies |
Applications
| DC-DC Converter Output Rectification | Switching Inverter Freewheeling Diode |
|---|---|
Use Scenario: Secondary-side rectification in isolated 12V/24V/48V DC-DC converters using flyback or forward topology. IC Role / Device Role / Timing Role: Fast recovery rectifier conducting during transformer demagnetization phase and blocking reverse voltage during switch-on period. Use Value: 150ns trr minimizes reverse recovery charge loss; 1.3V VF reduces conduction loss at 3A load current. | Use Scenario: Freewheeling path for inductive loads in single-phase H-bridge inverters driving fans or pumps. IC Role / Device Role / Timing Role: Provides low-loss current recirculation path when upper/lower MOSFETs turn off, clamping inductive kickback. Use Value: 125A IFSM withstands motor startup surges; DO-201AD package allows through-hole mounting on thermally robust PCBs. |
| AC-DC Adapter Secondary Rectifier | Industrial Power Supply Input Stage |
Use Scenario: Output rectification in universal-input (90–264V AC) offline adapters delivering ≤72W at 12V/5A. IC Role / Device Role / Timing Role: Converts transformer secondary AC to regulated DC; operates continuously at 3A average forward current. Use Value: 100V VRRM provides sufficient margin above 12V × √2 ≈ 17V peak; 150°C TJ(max) supports compact heatsinkless designs. | Use Scenario: Input rectification in 24V/48V industrial PSUs with active PFC front-end and dual-output regulation. IC Role / Device Role / Timing Role: Handles high-current, medium-voltage rectification in auxiliary or standby rails requiring reliability under thermal cycling. Use Value: UL 94V-0 package and JESD 201 Class 1A whisker compliance ensure long-term field reliability in harsh environments. |
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 | VRRM=600V, trr=35ns, VF=1.15V @ 3A, SMC package | Higher voltage rating and faster recovery, but surface-mount only | Preferred for higher-voltage or higher-frequency designs where board space permits SMC footprint |
| ON Semi MUR320 | VRRM=200V, trr=35ns, VF=1.25V @ 3A, DO-201AD package | Same package, higher VRRM and faster trr, but tighter VF distribution | Drop-in replacement if 200V blocking and 35ns trr are required; verify layout thermal relief for same DO-201AD footprint |
Compared with STTH3L06S and MUR320, the FR302G-K offers optimized cost-performance balance for 100V-class 3A rectification in through-hole power supplies, with proven thermal derating behavior and industry-standard DO-201AD mechanical fit.
Availability
FR302G-K is available at Aetrix Electronics and suitable for DC-DC converters, switching inverters, and industrial AC-DC adapters requiring stable component supply, long-lifecycle availability, and RoHS-compliant discrete rectifiers.
Supply support for FR302G-K 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 devices, and MOSFETs since 1979.
The FR30xG-K series is part of TSC's fast recovery rectifier product line, engineered specifically for high-efficiency, high-reliability power conversion in industrial, computing, and consumer power supplies.
FAQ
What is the maximum junction temperature rating for FR302G-K?
The FR302G-K has a maximum junction temperature (TJ(max)) of +150°C, verified per absolute maximum ratings in the official Taiwan Semiconductor datasheet Version C2105. This rating enables operation in thermally constrained environments such as sealed power adapters or industrial control cabinets when mounted with adequate copper area or heatsinking. The FR302G-K must not exceed this limit during steady-state or transient conditions to ensure long-term reliability.
Does FR302G-K have a cathode band marking?
Yes, the FR302G-K uses a visible cathode band on the DO-201AD molded body to indicate polarity, as confirmed in the Mechanical Data section and Marking Diagram of the Taiwan Semiconductor datasheet. This band identifies the cathode terminal, which must be connected toward the positive output rail. Correct orientation is essential to prevent reverse-bias failure during circuit operation.
What is the reverse recovery time (trr) specification for FR302G-K?
The FR302G-K has a reverse recovery time (trr) of 150 ns, measured under standard conditions of IF = 0.5 A, IR = 1.0 A, and Irr = 0.25 A, per the Electrical Specifications table in the Taiwan Semiconductor datasheet. This value is specific to the FR302G-K variant and differs from other members of the FR30xG-K family, such as FR305G-K (250 ns) and FR307G-K (500 ns).
Is FR302G-K RoHS and halogen-free compliant?
Yes, the FR302G-K is RoHS compliant and halogen-free per IEC 61249-2-21, as explicitly stated in the FEATURES section of the Taiwan Semiconductor datasheet. The device uses green molding compound meeting UL 94V-0 flammability rating and pure tin-plated leads qualified to J-STD-002 solderability standards - all verified in the official documentation for FR302G-K.
What packaging options are available for FR302G-K?
The FR302G-K is supplied in DO-201AD package with two standard packing formats: 1,250 units per tape-and-reel (ordering code FR302G-K) and 500 units per ammo box (ordering code FR302G-K A0G), as specified in the Ordering Information section of the Taiwan Semiconductor datasheet. Both variants share identical electrical and thermal specifications and are mechanically interchangeable on the PCB.
FR302G-K 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):
- 100 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 @ 100 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
FR302G-K FAQ
1.How can I place an order for FR302G-K through Aetrix?
Please submit a Request for Quotation (RFQ) for FR302G-K 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 FR302G-K reliable?
The price and inventory of FR302G-K are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for FR302G-K is usually 5 days.
3.What payment methods are accepted for FR302G-K?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for FR302G-K transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for FR302G-K?
FR302G-K orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your FR302G-K 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 FR302G-K?
For technical support, including FR302G-K datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your FR302G-K requirements.
6.How does Aetrix verify that FR302G-K is sourced from the original manufacturer or authorized distributors?
All FR302G-K 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 FR302G-K meets industry standards.
7.What is the process for return or replacement of FR302G-K?
All FR302G-K units undergo pre-shipment inspection (PSI). If there is an issue with FR302G-K, 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 FR302G-K part is unused and in its original packaging.
Return procedure for FR302G-K:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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