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Taiwan Semiconductor Corporation FR101G
- Part No.:
- FR101G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
FR101G.pdf
- Description:
- DIODE GEN PURP 50V 1A DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:4,486
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Product details
Overview
FR101G from Taiwan Semiconductor is a 1A, 50V fast recovery rectifier diode in DO-204AL (DO-41) package, featuring 150 ns reverse recovery time, 1.3 V forward voltage at 1 A, and 30 A surge current capability. It serves as a primary output rectifier in low-voltage DC–DC converters requiring high efficiency and thermal reliability.
For engineers reviewing the FR101G datasheet, FR101G pinout, FR101G application, or FR101G equivalent, key selection criteria include its 50 V VRRM, 150 ns trr, glass-passivated junction, AEC-Q101 qualification option (H-suffix), and DO-41 mechanical compatibility with legacy through-hole power supplies.
Technical Context
The FR101G is a single-die, silicon planar fast recovery rectifier optimized for switching-mode power supplies operating below 50 V reverse stress. Its 150 ns trr enables efficient operation at 50–100 kHz frequencies, while the glass-passivated junction ensures stable leakage (<5 µA at 25°C) and robustness against humidity and contamination.
Thermally, it delivers 70 °C/W junction-to-ambient resistance in free-air conditions and supports continuous operation up to 150 °C junction temperature. The pure tin-plated leads meet J-STD-002 solderability and JESD201 Class 2 whisker resistance requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 50 V - Maximum repetitive reverse voltage; defines safe blocking capability in 5–48 V output rails |
| IF | 1 A - Continuous forward current rating; supports 12 W dissipation at 1.3 V VF in ambient air |
| trr | 150 ns - Reverse recovery time measured at IF = 0.5 A, IR = 1.0 A, Irr = 0.25 A; enables <100 kHz SMPS use |
| VF | 1.3 V max @ 1 A, 25°C - Low conduction loss; contributes to >85% efficiency in 5–12 V buck converters |
| IFSM | 30 A - Non-repetitive surge rating (8.3 ms half-sine); handles cold-start inrush in adapter designs |
| RθJA | 70 °C/W - Thermal resistance in free-air; requires minimal copper area for thermal management |
| Junction temp | −55 to +150 °C - Wide operating range suitable for industrial and automotive under-hood environments |
Pinout & Package
Package: DO-204AL (DO-41), axial leaded, glass-passivated silicon die, cathode indicated by band. Weight: 0.340 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unbanded end) | Forward current entry point | Connected to lower-potential node (e.g., switch node in buck, transformer secondary center-tap) |
| Cathode (banded end) | Forward current exit / reverse blocking terminal | Connected to output filter capacitor positive rail; blocks reverse voltage up to 50 V |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Eliminates need for conformal coating in humid environments; improves long-term IR stability vs. epoxy-passivated parts |
| AEC-Q101 qualified version available (FR101GH) | Validated for automotive power modules requiring zero defect rates and extended temperature cycling |
| Low VF (1.3 V max) | Reduces conduction loss by ~15% vs. standard 1N400x series at 1 A, improving thermal margin in compact layouts |
| 150 ns trr | Enables higher-frequency operation than 1N493x (200–500 ns), reducing output filter size in space-constrained adapters |
| RoHS & halogen-free | Complies with IEC 61249-2-21; supports green manufacturing and end-of-life recycling requirements |
Applications
| 5 V/12 V DC–DC Converter Output Rectification | USB-C Power Adapter Secondary Side |
|---|---|
Use Scenario: Rectifying switched output in isolated flyback or non-isolated buck converters delivering 5–12 V at ≤1 A. IC Role / Device Role / Timing Role: Fast recovery diode providing unidirectional current path with minimal reverse recovery loss. Use Value: 150 ns trr and 1.3 V VF reduce switching losses and improve efficiency over standard rectifiers in 60–100 kHz designs. | Use Scenario: Secondary-side rectification in compact USB-C PD adapters targeting 18–30 W output. IC Role / Device Role / Timing Role: Discrete power diode handling continuous 1 A load with transient surges during plug insertion. Use Value: 30 A IFSM withstands hot-plug inrush; DO-41 footprint allows direct replacement of legacy 1N400x without PCB redesign. |
| Industrial PLC Power Supply Input Stage | Automotive Body Control Module (BCM) Auxiliary Rail |
Use Scenario: Input rectification for 24 V AC/DC auxiliary supplies in programmable logic controllers. IC Role / Device Role / Timing Role: Bridge or single-diode rectifier converting transformer secondary AC to DC bus. Use Value: −55 to +150 °C operating range and JESD201 Class 2 whisker resistance ensure reliability in wide-temperature industrial enclosures. | Use Scenario: 12 V auxiliary rail rectification in BCMs where space and thermal constraints limit heatsinking. IC Role / Device Role / Timing Role: Fast recovery diode in low-power auxiliary supply feeding microcontrollers and sensors. Use Value: AEC-Q101-qualified variant (FR101GH) meets automotive qualification for vibration, thermal shock, and lifetime testing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fast recovery rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH1R06 | Same 1 A / 60 V rating but 75 ns trr; TO-220AC package, higher thermal mass | Requires PCB mount change; better for higher ambient temps (>70 °C) due to lower RθJA | Select when lower trr and higher surge tolerance (50 A) justify SMT or larger footprint |
| 1N4933 | 1 A / 50 V, 200 ns trr, same DO-41 package; no AEC-Q101 option, higher VF (1.5 V) | Drop-in replacement for cost-sensitive non-automotive designs; lower efficiency and no automotive qualification | Choose only for legacy designs where 150 ns trr and AEC-Q101 are not required |
Compared with STTH1R06 and 1N4933, the FR101G offers the optimal balance of speed (150 ns), package compatibility (DO-41), and qualification readiness (AEC-Q101 option), making it preferred for new industrial and automotive-adjacent designs needing proven reliability in compact through-hole layouts.
Availability
FR101G is available at Aetrix Electronics and suitable for DC–DC converter output stages, USB-C adapter secondary sides, and industrial PLC auxiliary power supplies requiring stable component supply and long-term manufacturability.
Supply support for FR101G 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, automotive, and industrial markets since 1979.
The FR101G belongs to TSC's FR-series fast recovery rectifier family, engineered specifically for high-efficiency, high-reliability switching power conversion in cost-sensitive and thermally constrained applications.
FAQ
What is the maximum repetitive peak reverse voltage (VRRM) for FR101G?
The FR101G has a VRRM of 50 V, meaning it can safely block up to 50 V of reverse voltage repeatedly without breakdown. This rating is confirmed in the Absolute Maximum Ratings table on page 1 of the official Taiwan Semiconductor datasheet (Version H2104). Exceeding this voltage risks irreversible junction failure. Designers should apply ≥20% derating in noisy or inductive environments.
Is FR101G suitable for automotive applications?
The base FR101G is not AEC-Q101 qualified, but the FR101GH variant is fully AEC-Q101 certified and shares identical electrical specs and DO-41 packaging. For automotive body control modules or infotainment power supplies, FR101GH must be specified. The "H" suffix denotes qualification per AEC-Q101 Rev D, including temperature cycling, HTRB, and ESD testing.
What is the reverse recovery time (trr) of FR101G and how is it measured?
The FR101G has a trr of 150 ns, measured under standardized conditions: IF = 0.5 A, IR = 1.0 A, and Irr = 0.25 A, per Figure 6 test circuit in the datasheet. This value reflects the time needed for minority carriers to clear after forward conduction, directly impacting switching loss in SMPS. It is not guaranteed for conditions outside these test parameters.
Does FR101G have RoHS and halogen-free compliance?
Yes, FR101G is RoHS compliant and halogen-free per IEC 61249-2-21. The molding compound contains no brominated flame retardants (BFRs), chlorinated flame retardants (CFRs), or antimony trioxide. This is documented in the Features section (page 1) and Mechanical Data section (page 2) of the Taiwan Semiconductor datasheet.
What is the thermal resistance (RθJA) of FR101G in free-air conditions?
The FR101G has a typical junction-to-ambient thermal resistance (RθJA) of 70 °C/W when mounted in free-air with no heatsink or copper pour. This value assumes standard DO-41 mounting per JEDEC standards. Adding 1 cm² of 2 oz copper on both sides reduces RθJA to ~45 °C/W, enabling higher continuous current in thermally dense layouts.
FR101G 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 FAQ
1.How can I place an order for FR101G through Aetrix?
Please submit a Request for Quotation (RFQ) for FR101G 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 reliable?
The price and inventory of FR101G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for FR101G is usually 5 days.
3.What payment methods are accepted for FR101G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for FR101G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for FR101G?
FR101G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your FR101G 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?
For technical support, including FR101G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your FR101G requirements.
6.How does Aetrix verify that FR101G is sourced from the original manufacturer or authorized distributors?
All FR101G 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 meets industry standards.
7.What is the process for return or replacement of FR101G?
All FR101G units undergo pre-shipment inspection (PSI). If there is an issue with FR101G, 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 part is unused and in its original packaging.
Return procedure for FR101G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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