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Taiwan Semiconductor Corporation FR104G-K
- Part No.:
- FR104G-K
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
FR104G-K.pdf
- Description:
- 150NS, 1A, 400V, FAST RECOVERY R
- Quantity:
- Payment:
- Shipping:
Inventory:4,116
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Product details
Overview
FR104G-K from Taiwan Semiconductor is a fast recovery rectifier diode with 400 V repetitive peak reverse voltage (VRRM), 1 A average forward current (IF), and 150 ns reverse recovery time (trr) measured at IF = 0.5 A, IR = 1.0 A, Irr = 0.25 A. It features glass passivated junction, low forward voltage (VF ≤ 1.3 V @ 1 A), and DO-204AL (DO-41) package. It is used in switching mode power supplies for efficient AC/DC conversion.
For engineers reviewing the FR104G-K datasheet, FR104G-K pinout, FR104G-K application, or FR104G-K equivalent, key selection criteria include VRRM = 400 V, trr = 150 ns, VF ≤ 1.3 V, IFSM = 30 A, and DO-41 mechanical compatibility in compact DC-DC and SMPS designs.
Technical Context
The FR104G-K is a single-die, silicon planar fast recovery rectifier optimized for high-frequency switching applications. Its 150 ns trr enables reduced switching losses in converters operating above 20 kHz, while its 70 °C/W junction-to-ambient thermal resistance supports conduction-limited operation up to 1 A at TA ≤ 75 °C.
Designed with pure tin-plated leads compliant with J-STD-002 and JESD 201 Class 1A whisker testing, the device ensures reliable solderability and long-term interconnect integrity. The cathode band marking and UL 94V-0 molding compound meet industrial safety and assembly requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 400 V - Maximum non-repetitive reverse voltage the device blocks without breakdown; defines usable input voltage range in offline SMPS. |
| IF | 1 A - Continuous average forward current rating at TA = 75 °C; determines output power capability in rectifier stage. |
| trr | 150 ns - Measured under IF = 0.5 A, IR = 1.0 A, Irr = 0.25 A; enables efficient operation in 50–200 kHz switch-mode topologies. |
| VF | ≤1.3 V @ 1 A, 25°C - Forward voltage drop directly impacts conduction loss and thermal rise in high-duty-cycle applications. |
| IFSM | 30 A - Peak non-repetitive surge current handling; supports inrush current tolerance during power-up in DC-DC inputs. |
| RθJA | 70 °C/W - Junction-to-ambient thermal resistance; used to calculate temperature rise under given power dissipation and PCB layout. |
Pinout & Package
Package: DO-204AL (DO-41), axial leaded, glass-passivated silicon die, cathode indicated by band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to AC input or transformer secondary; must withstand surge currents up to 30 A. |
| Cathode | Forward current exit / reverse voltage blocking node | Connected to output filter capacitor; polarity marking critical for correct orientation in PCB layout. |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Enhances moisture resistance and long-term reliability in humid or thermally cycled environments. |
| Low VF (≤1.3 V) | Reduces conduction loss by ~15% vs. standard recovery diodes, improving efficiency in 12–48 V output SMPS. |
| 150 ns trr | Minimizes reverse recovery charge (Qrr), lowering EMI and enabling higher frequency operation without snubber circuits. |
| RoHS & halogen-free | Complies with IEC 61249-2-21; eliminates brominated flame retardants and supports green manufacturing requirements. |
Applications
| AC/DC Adapter Power Supply | DC-DC Buck Converter Input Stage |
|---|---|
Use Scenario: Rectifying 50/60 Hz or high-frequency AC from transformer secondary in wall-wart adapters rated 5–24 W. IC Role / Device Role / Timing Role: Fast recovery rectifier providing unidirectional current path with minimal reverse recovery loss. Use Value: 150 ns trr reduces switching noise and improves efficiency over standard rectifiers, enabling smaller heatsink or no heatsink design. | Use Scenario: Input rectification of high-frequency AC generated by half-bridge or flyback controller in isolated DC-DC modules. IC Role / Device Role / Timing Role: Secondary-side synchronous rectifier alternative where gate drive complexity is avoided. Use Value: Low VF and fast trr lower conduction and switching losses, increasing overall converter efficiency by 1–2% at 100 kHz. |
| Industrial Motor Drive Auxiliary Power | LED Driver Bulk Rectification |
Use Scenario: Providing isolated auxiliary 12 V/24 V supply for gate drivers and logic in variable frequency drives. IC Role / Device Role / Timing Role: Primary-side rectifier in flyback or forward converter powering control circuitry. Use Value: 400 V VRRM safely handles reflected transients from IGBT switching; 30 A IFSM absorbs startup surges. | Use Scenario: Rectifying line voltage before PFC stage in constant-current LED drivers for street lighting or commercial fixtures. IC Role / Device Role / Timing Role: Bridge or single-diode rectifier in high-voltage input stage. Use Value: Glass passivation and 150 °C TJ max ensure stable operation under sustained ambient temperatures up to 85 °C. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fast recovery rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH1R04 | VRRM = 400 V, trr = 100 ns, VF = 1.25 V @ 1 A - faster recovery and slightly lower VF. | Optimized for >300 kHz operation; tighter trr distribution supports higher-frequency PFC stages. | Preferred when minimizing Qrr and EMI is critical; requires verification of DO-41 footprint compatibility. |
| 1N4936 | VRRM = 400 V, trr = 500 ns, VF = 1.4 V @ 1 A - slower recovery, higher VF, legacy standard recovery part. | Suitable only for ≤20 kHz applications; higher losses limit use in compact, thermally constrained designs. | Select only for cost-sensitive, low-frequency replacements where trr < 200 ns is not required. |
Compared with STTH1R04 and 1N4936, the FR104G-K delivers balanced performance: faster than 1N4936 for modern SMPS but more cost-effective than STTH1R04, with verified DO-41 fit and RoHS/halogen-free compliance for industrial production.
Availability
FR104G-K is available at Aetrix Electronics and suitable for AC/DC adapters, DC-DC buck converters, and industrial motor drive auxiliary power supplies requiring stable component supply and long-term manufacturability.
Supply support for FR104G-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 diodes, and MOSFETs since 1979.
The FR101G-K to FR107G-K family was designed specifically for high-efficiency, high-reliability switching power conversion across consumer, industrial, and computing applications, with graded VRRM and consistent fast-recovery performance.
FAQ
What is the maximum repetitive peak reverse voltage (VRRM) for FR104G-K?
The FR104G-K has a VRRM of 400 V, meaning it reliably blocks up to 400 V of reverse voltage in repetitive AC or transient conditions. This rating is confirmed in the Absolute Maximum Ratings table of the official Taiwan Semiconductor datasheet (Version B2104) and defines the upper limit for safe operation in bridge or single-diode rectifier configurations.
What is the reverse recovery time (trr) condition for FR104G-K?
The FR104G-K reverse recovery time is specified as 150 ns under test conditions of IF = 0.5 A, IR = 1.0 A, and Irr = 0.25 A, per the Electrical Specifications section of the Taiwan Semiconductor datasheet. This value reflects real-world switching behavior in typical SMPS operating points and is not extrapolated from other variants like FR105G-K.
Is FR104G-K compatible with lead-free reflow soldering processes?
Yes, the FR104G-K uses pure tin-plated leads qualified per J-STD-002 for solderability and meets JESD 201 Class 1A whisker resistance. Its DO-41 package is rated for standard lead-free reflow profiles (peak ≤ 260 °C), and the UL 94V-0 molding compound ensures thermal stability during assembly.
Does FR104G-K have a halogen-free construction?
Yes, the FR104G-K is halogen-free in accordance with IEC 61249-2-21, as explicitly stated in the FEATURES section of the Taiwan Semiconductor datasheet. This applies to both the molding compound and internal materials, supporting environmental compliance for export and industrial end equipment.
What is the junction-to-ambient thermal resistance (RθJA) of FR104G-K?
The FR104G-K has a typical RθJA of 70 °C/W, measured on a standard JEDEC 2s2p copper pad layout. This value allows engineers to calculate junction temperature rise under actual power dissipation (e.g., 1.3 V × 1 A = 1.3 W → ΔTJ ≈ 91 °C above ambient), confirming safe operation within the −55 °C to +150 °C TJ range.
FR104G-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):
- 400 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 @ 400 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
FR104G-K FAQ
1.How can I place an order for FR104G-K through Aetrix?
Please submit a Request for Quotation (RFQ) for FR104G-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 FR104G-K reliable?
The price and inventory of FR104G-K are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for FR104G-K is usually 5 days.
3.What payment methods are accepted for FR104G-K?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for FR104G-K transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for FR104G-K?
FR104G-K orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your FR104G-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 FR104G-K?
For technical support, including FR104G-K datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your FR104G-K requirements.
6.How does Aetrix verify that FR104G-K is sourced from the original manufacturer or authorized distributors?
All FR104G-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 FR104G-K meets industry standards.
7.What is the process for return or replacement of FR104G-K?
All FR104G-K units undergo pre-shipment inspection (PSI). If there is an issue with FR104G-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 FR104G-K part is unused and in its original packaging.
Return procedure for FR104G-K:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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