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Taiwan Semiconductor Corporation FR101G-K
- Part No.:
- FR101G-K
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
FR101G-K.pdf
- Description:
- 150NS, 1A, 50V, FAST RECOVERY RE
- Quantity:
- Payment:
- Shipping:
Inventory:8,684
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Product details
Overview
FR101G-K from Taiwan Semiconductor is a 1A, 50V fast recovery rectifier diode in DO-204AL (DO-41) package, featuring 1.3V max forward voltage at 1A, 30A surge capability, and 150ns reverse recovery time. It serves as primary output rectification in low-voltage DC-DC converters and switching power supplies.
For engineers reviewing the FR101G-K datasheet, FR101G-K pinout, FR101G-K application, or FR101G-K equivalent, key selection criteria include its 50V VRRM rating, 150ns trr for high-frequency switching efficiency, glass-passivated junction for reliability, and DO-41 leaded package compatibility with through-hole assembly and thermal derating up to 150°C junction temperature.
Technical Context
This single-die, unidirectional fast recovery rectifier uses a glass-passivated PN junction to achieve low VF and stable reverse leakage (<5µA at 25°C). Its 150ns reverse recovery time enables operation in 50–200kHz switching topologies without excessive switching loss.
The device operates across –55°C to +150°C junction range, with 70°C/W junction-to-ambient thermal resistance and pure tin-plated leads compliant with J-STD-002 solderability. Cathode polarity is marked by a visible band on the DO-41 body.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 50 V - Maximum repetitive reverse voltage before breakdown; sets upper limit for DC bus or output rail voltage handling |
| IF | 1 A - Continuous average forward current; defines steady-state conduction capacity in power stage design |
| trr | 150 ns - Reverse recovery time at IF = 0.5A, IR = 1.0A, Irr = 0.25A; determines minimum off-time and switching loss in SMPS |
| VF | ≤1.3 V @ 1A, 25°C - Forward voltage drop; directly impacts conduction loss and thermal rise in rectifier path |
| IFSM | 30 A - Non-repetitive surge current (8.3ms half-sine); supports inrush and fault-current robustness |
| TJ max | +150°C - Maximum junction temperature; governs thermal design margin and ambient derating curves |
Pinout & Package
Package: DO-204AL (DO-41), axial-leaded, epoxy-molded case with cathode band marking. Lead finish: pure tin, J-STD-002 compliant. Weight: 0.330g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unmarked end) | Forward current entry point | Connects to lower-potential node (e.g., transformer secondary center-tap or switch node return) |
| Cathode (banded end) | Forward current exit / reverse blocking terminal | Connects to output filter capacitor positive rail; polarity must be observed to prevent catastrophic failure |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Enhances moisture resistance and long-term parameter stability under humid or thermally cycled conditions |
| Low VF (≤1.3V @ 1A) | Reduces conduction loss by ~15% vs. standard recovery diodes, improving efficiency in 5–24V output converters |
| 150ns trr | Enables use in higher-frequency flyback and forward converters without added snubbers or efficiency penalty |
| RoHS & halogen-free | Meets IEC 61249-2-21; supports compliance in consumer, industrial, and EU-market power supplies |
Applications
| DC-DC Converter Output Rectification | AC-DC Adapter Secondary Side |
|---|---|
Use Scenario: 12V/1A isolated buck-derived DC-DC module powering FPGA I/O rails. IC Role / Device Role / Timing Role: Fast recovery rectifier conducting during transformer secondary positive half-cycle; blocks reverse current during reset phase. Use Value: 150ns trr minimizes switching overlap loss with synchronous MOSFETs; 1.3V VF limits heat generation in compact enclosure. | Use Scenario: Wall-mount AC-DC adapter delivering 5V/1A to USB peripherals. IC Role / Device Role / Timing Role: Secondary-side freewheeling rectifier in discontinuous conduction mode (DCM) flyback topology. Use Value: Glass passivation ensures reliability over 50,000-hour lifetime; DO-41 package allows manual rework and automated insertion. |
| Industrial Sensor Power Supply | LED Driver Auxiliary Rectification |
Use Scenario: 24V input industrial sensor node with internal 3.3V LDO fed via discrete rectifier. IC Role / Device Role / Timing Role: Input-stage bridge rectifier leg in miniaturized offline linear regulator supply. Use Value: 30A IFSM withstands motor startup surges on shared 24V bus; –55°C to +150°C rating supports wide ambient operation. | Use Scenario: Constant-current LED driver using flyback controller with auxiliary bias winding. IC Role / Device Role / Timing Role: Bias supply rectifier converting auxiliary winding AC to DC for IC VDD. Use Value: Low CJ (10pF) prevents coupling noise into control circuitry; RoHS/halogen-free status meets lighting safety standards. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fast recovery rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH1R06U | 1A, 600V, TO-220AC package, trr = 50ns, VF = 1.15V @ 1A | Higher VRRM and faster trr; requires PCB footprint change and heatsinking | Preferred for higher-voltage or higher-efficiency designs where layout revision is acceptable |
| 1N4933 | 1A, 100V, DO-41, trr ≈ 200ns, VF = 1.4V @ 1A | Lower VRRM, slower recovery, higher VF; legacy general-purpose part | Suitable for cost-sensitive, non-critical 12–24V applications where 150ns timing margin is not required |
Compared with STTH1R06U and 1N4933, the FR101G-K offers optimal balance of 50V rating, 150ns speed, and DO-41 compatibility-making it ideal for space-constrained, low-voltage switching supplies where thermal and layout continuity matter.
Availability
FR101G-K is available at Aetrix Electronics and suitable for DC-DC converters, AC-DC adapters, and industrial sensor power supplies requiring stable component supply, consistent DO-41 form factor, and RoHS-compliant manufacturing.
Supply support for FR101G-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, serving global power and signal conditioning markets since 1979.
The FR101G-K belongs to TSC's FRxG-K fast recovery rectifier family, engineered specifically for high-efficiency, high-reliability secondary-side rectification in cost-sensitive, high-volume AC-DC and DC-DC power conversion systems.
FAQ
What is the maximum repetitive peak reverse voltage (VRRM) for FR101G-K?
The FR101G-K has a VRRM rating of 50 V, meaning it can safely block up to 50 volts of reverse voltage in repetitive operation. This value is fixed per the part number suffix '1' in FR101G-K and is confirmed in the Absolute Maximum Ratings table. Exceeding this voltage risks avalanche breakdown and permanent damage to the FR101G-K.
Does FR101G-K have a specified reverse recovery time (trr), and under what test conditions?
Yes, the FR101G-K has a reverse recovery time (trr) of 150 ns, measured under the condition IF = 0.5 A, IR = 1.0 A, and Irr = 0.25 A. This value is explicitly listed in the Electrical Specifications table for FR101G-K and distinguishes it from higher-voltage variants (e.g., FR105G-K = 250 ns). The trr directly affects switching loss in high-frequency converters using the FR101G-K.
Is FR101G-K RoHS compliant and halogen-free?
Yes, the FR101G-K is RoHS compliant and halogen-free per IEC 61249-2-21. This is stated in the FEATURES section and verified in the Mechanical Data. The "G" in FR101G-K denotes green compound, confirming halogen-free molding material. These compliance attributes apply specifically to the FR101G-K and are documented in Taiwan Semiconductor's B2104 datasheet revision.
What is the thermal resistance (RθJA) of FR101G-K, and how does it impact board-level design?
The FR101G-K has a junction-to-ambient thermal resistance (RθJA) of 70°C/W under standard JEDEC test conditions. This means each watt of power dissipated in the FR101G-K raises its junction temperature by 70°C above ambient. Designers must calculate total power loss (VF × IF + switching loss) and ensure resulting TJ stays ≤150°C-often requiring copper pour or airflow when operating near 1A continuous current.
How is polarity indicated on the FR101G-K package, and why is correct orientation critical?
Polarity of the FR101G-K is indicated by a cathode band printed on the DO-41 body-located at the cathode (output) end. Correct orientation is critical because reverse-biasing beyond VRRM causes immediate avalanche failure. In rectifier applications, misorientation results in short-circuit behavior, overheating, and potential damage to upstream switches or controllers sharing the same FR101G-K circuit node.
FR101G-K Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- DO-204AL, DO-41, Axial
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 50 V
- Current - Average Rectified (Io):
- 1A
- Voltage - Forward (Vf) (Max) @ If:
- 1.3 V @ 1 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 150 ns
- Current - Reverse Leakage @ Vr:
- 5 µA @ 50 V
- Capacitance @ Vr, F:
- 10pF @ 4V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AL (DO-41)
- Operating Temperature - Junction:
- -55°C ~ 150°C
FR101G-K FAQ
1.How can I place an order for FR101G-K through Aetrix?
Please submit a Request for Quotation (RFQ) for FR101G-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 FR101G-K reliable?
The price and inventory of FR101G-K are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for FR101G-K is usually 5 days.
3.What payment methods are accepted for FR101G-K?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for FR101G-K transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for FR101G-K?
FR101G-K orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your FR101G-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 FR101G-K?
For technical support, including FR101G-K datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your FR101G-K requirements.
6.How does Aetrix verify that FR101G-K is sourced from the original manufacturer or authorized distributors?
All FR101G-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 FR101G-K meets industry standards.
7.What is the process for return or replacement of FR101G-K?
All FR101G-K units undergo pre-shipment inspection (PSI). If there is an issue with FR101G-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 FR101G-K part is unused and in its original packaging.
Return procedure for FR101G-K:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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