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Taiwan Semiconductor Corporation FR105G-K
- Part No.:
- FR105G-K
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
FR105G-K.pdf
- Description:
- 250NS, 1A, 600V, FAST RECOVERY R
- Quantity:
- Payment:
- Shipping:
Inventory:9,224
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Product details
Overview
FR105G-K from Taiwan Semiconductor is a 1A, 600V fast recovery rectifier diode in DO-204AL (DO-41) package, featuring 250 ns reverse recovery time, 1.3 V max forward voltage at 1 A, and 5 µA max reverse leakage at 25°C. It serves as the primary output rectifier in offline SMPS and DC-DC converters requiring high efficiency and surge robustness.
For engineers reviewing the FR105G-K datasheet, FR105G-K pinout, FR105G-K application, or FR105G-K equivalent, key selection criteria include VRRM = 600 V, IF = 1 A, trr = 250 ns, thermal resistance RθJA = 70 °C/W, and DO-41 mechanical compatibility with through-hole power supply layouts.
Technical Context
This single-die, glass-passivated junction rectifier operates with a maximum junction temperature of 150°C and supports repetitive peak reverse voltages up to 600 V. Its fast recovery characteristic enables use in switching frequencies up to several hundred kHz without excessive switching loss.
The device delivers low conduction loss (VF ≤ 1.3 V @ 1 A) and low leakage (IR ≤ 5 µA @ 25°C), while sustaining 30 A non-repetitive surge current (8.3 ms half-sine). Its DO-41 package meets UL 94V-0 and JESD201 Class 1A whisker requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 600 V - Withstands peak reverse voltage in 400 V AC input rectification and 300 V DC bus applications |
| IF | 1 A continuous - Supports output currents up to 800 mA in typical flyback or buck-derived topologies |
| trr | 250 ns - Enables efficient operation in 100–300 kHz switching converters with minimal turn-off loss |
| VF (max) | 1.3 V @ 1 A - Limits conduction loss to ≤1.3 W at full load, reducing thermal stress on PCB layout |
| IR (max) | 5 µA @ 25°C - Ensures negligible standby leakage in energy-sensitive auxiliary supplies |
| RθJA | 70 °C/W - Requires ≥100 mm² copper pour for safe 1 A operation at ambient ≤50°C |
Pinout & Package
Package: DO-204AL (DO-41), axial-leaded, glass-passivated silicon die, cathode indicated by band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unbanded end) | Forward current entry point | Connected to transformer secondary or switch node; must handle 30 A surge transients |
| Cathode (banded end) | Forward current exit / reverse blocking terminal | Connected to output capacitor positive rail; defines polarity and voltage reference for downstream regulation |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Enhances humidity resistance and long-term reliability in industrial environments with >85% RH exposure |
| Low VF and high IFSM | Reduces conduction loss while surviving cold-start surges common in universal-input AC/DC adapters |
| RoHS & halogen-free compliance | Meets IEC 61249-2-21 and global environmental mandates for consumer and industrial end equipment |
| UL 94V-0 molding compound | Provides flame-retardant encapsulation required for safety-certified power supplies (e.g., UL62368-1) |
Applications
| AC-DC Adapter Output Rectification | Industrial DC-DC Converter Secondary Side |
|---|---|
Use Scenario: 12 V/1 A output stage of universal-input (90–264 VAC) wall adapter for IoT gateways. IC Role / Device Role / Timing Role: Primary unidirectional current path converting transformer AC to regulated DC; no timing function. Use Value: 250 ns trr minimizes switching loss during high-frequency flyback operation, improving efficiency by ~1.2% over standard recovery diodes. | Use Scenario: Isolated 24 V to 5 V step-down converter in PLC I/O module with 4 kV ESD immunity requirement. IC Role / Device Role / Timing Role: Secondary-side rectifier handling 1 A continuous load under wide ambient (−40°C to +70°C). Use Value: 150°C TJMAX and 30 A IFSM ensure reliable startup under capacitive load and transient overload conditions. |
| LED Driver Auxiliary Supply | Automotive Aftermarket Inverter Input Stage |
Use Scenario: 15 V auxiliary bias supply in constant-current LED driver powering streetlight modules. IC Role / Device Role / Timing Role: Bridge rectifier leg providing isolated low-power rail for controller IC and gate drivers. Use Value: 5 µA IR at 25°C reduces no-load power consumption below 15 mW, supporting Energy Star Tier 2 standby targets. | Use Scenario: Input rectification in 12 V DC to 110 V AC modified-sine inverter for automotive refrigeration units. IC Role / Device Role / Timing Role: High-surge-capable rectifier converting battery input to DC bus prior to H-bridge inversion. Use Value: DO-41 mechanical robustness and 30 A IFSM withstand repeated cranking transients (ISO 16750-2 Pulse 4) without degradation. |
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 | VRRM = 600 V, trr = 150 ns, VF = 1.15 V @ 1 A, DO-41 package | Lower trr and VF reduce switching and conduction loss but increase cost by ~22% | Preferred where efficiency >88% is mandatory and BOM cost premium is acceptable |
| 1N4936G | VRRM = 600 V, trr = 500 ns, VF = 1.55 V @ 1 A, DO-41 package | Slower recovery and higher VF increase losses in >100 kHz designs; lower cost (~18% less) | Suitable for low-frequency (<60 kHz), cost-sensitive applications with relaxed thermal constraints |
Compared with STTH1R06U and 1N4936G, FR105G-K offers balanced performance-250 ns trr and 1.3 V VF support mid-frequency SMPS designs without premium pricing, while maintaining DO-41 footprint compatibility and industrial-grade reliability.
Availability
FR105G-K is available at Aetrix Electronics and suitable for AC-DC adapters, industrial DC-DC converters, LED driver auxiliary supplies, and automotive aftermarket inverters requiring stable component supply across multi-year production cycles.
Supply support for FR105G-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 industrial, computing, and consumer markets since 1979.
The FR10xG-K series is part of TSC's general-purpose fast recovery rectifier product line, engineered for cost-effective, high-reliability AC/DC and DC/DC power conversion in commercial and industrial equipment.
FAQ
What is the maximum repetitive peak reverse voltage rating for FR105G-K?
The FR105G-K has a maximum repetitive peak reverse voltage (VRRM) of 600 V, verified per Taiwan Semiconductor's B2104 datasheet. This rating allows safe operation in 400 V DC bus systems and universal-input AC/DC front-ends. Exceeding this voltage risks avalanche breakdown and permanent junction damage. Derating to 80% (480 V) is recommended for long-term reliability in high-temperature or high-humidity environments.
Does FR105G-K support surface-mount assembly?
No, FR105G-K uses a DO-204AL (DO-41) axial-leaded package designed exclusively for through-hole mounting. It lacks SMD-compatible terminations or thermal pad structure. For surface-mount equivalents, consider TSC's SOD-123FL-packaged FR105G-S variant or STMicroelectronics' STTH1R06UF in SMA package-both require PCB redesign and requalification.
What is the reverse recovery time of FR105G-K and how is it measured?
The FR105G-K has a reverse recovery time (trr) of 250 ns, measured under standardized conditions: IF = 0.5 A, IR = 1.0 A, 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. It is not adjustable or programmable.
Is FR105G-K compliant with RoHS and halogen-free standards?
Yes, FR105G-K is RoHS compliant and halogen-free per IEC 61249-2-21, confirmed in the B2104 datasheet revision. The molding compound contains no brominated flame retardants, and tin-plated leads meet J-STD-002 solderability requirements. Certificate of Compliance is available upon request for FR105G-K lot traceability.
Can FR105G-K replace FR104G-K or FR106G-K in an existing design?
FR105G-K is not a direct replacement for FR104G-K (400 V) or FR106G-K (800 V) due to differing VRRM ratings. Substitution requires verification of voltage margin in the target circuit: using FR105G-K in place of FR104G-K adds 200 V headroom but may increase cost; replacing FR106G-K risks overvoltage failure. Thermal and surge performance remain identical across the FR10xG-K family.
FR105G-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):
- 600 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):
- 250 ns
- Current - Reverse Leakage @ Vr:
- 5 µA @ 600 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
FR105G-K FAQ
1.How can I place an order for FR105G-K through Aetrix?
Please submit a Request for Quotation (RFQ) for FR105G-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 FR105G-K reliable?
The price and inventory of FR105G-K are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for FR105G-K is usually 5 days.
3.What payment methods are accepted for FR105G-K?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for FR105G-K transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for FR105G-K?
FR105G-K orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your FR105G-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 FR105G-K?
For technical support, including FR105G-K datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your FR105G-K requirements.
6.How does Aetrix verify that FR105G-K is sourced from the original manufacturer or authorized distributors?
All FR105G-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 FR105G-K meets industry standards.
7.What is the process for return or replacement of FR105G-K?
All FR105G-K units undergo pre-shipment inspection (PSI). If there is an issue with FR105G-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 FR105G-K part is unused and in its original packaging.
Return procedure for FR105G-K:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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