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Taiwan Semiconductor Corporation FR104G
- Part No.:
- FR104G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
FR104G.pdf
- Description:
- DIODE GEN PURP 400V 1A DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:9,870
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Product details
Overview
FR104G 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 - used in DC-DC converters and switching-mode power supplies.
For engineers reviewing the FR104G datasheet, FR104G pinout, FR104G application, or FR104G equivalent, key selection criteria include its 400 V VRRM rating, 150 ns trr for high-frequency switching, VF vs. temperature behavior, thermal resistance (RθJA = 70 °C/W), and AEC-Q101 qualification availability in variant FR104GH.
Technical Context
The FR104G is a single-die, silicon planar fast recovery rectifier optimized for medium-voltage, medium-frequency switching applications. Its 400 V VRRM and 150 ns trr enable efficient operation in flyback and forward converter topologies where reverse recovery loss must be minimized.
It uses glass passivation for junction protection, supports 30 A non-repetitive surge current (IFSM), and operates across -55 °C to +150 °C junction temperature range. The DO-204AL package provides standardized lead spacing (2.54 mm) and tin-plated leads compliant with J-STD-002 solderability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 400 V - maximum repetitive reverse blocking voltage; defines safe operating limit in bridge or freewheeling configurations |
| IF(AV) | 1 A - continuous average forward current at TA = 75 °C; derates linearly above 75 °C per forward current curve |
| trr | 150 ns - reverse recovery time under IF = 0.5 A, IR = 1.0 A, Irr = 0.25 A; critical for EMI and switching loss in SMPS |
| VF | ≤1.3 V @ IF = 1 A, TJ = 25 °C - forward voltage drop directly impacts conduction loss and thermal design |
| RθJA | 70 °C/W - junction-to-ambient thermal resistance in free-air; determines heatsinking requirement for 1 A continuous load |
| IR | ≤5 µA @ VR = 400 V, TJ = 25 °C - low leakage ensures minimal standby power loss in high-impedance bias networks |
Pinout & Package
Package: DO-204AL (DO-41), axial-leaded, glass-passivated silicon die, cathode indicated by band. Weight: 0.340 g. RoHS and halogen-free compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential side in rectification; must handle 1 A continuous and 30 A surge |
| Cathode | Forward current exit / reverse blocking terminal | Banded end; sustains 400 V reverse bias; low IR minimizes leakage path current |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Enhances humidity resistance and long-term reliability in industrial environments without hermetic sealing |
| 150 ns reverse recovery time | Reduces switching losses and EMI generation in 50–500 kHz SMPS designs compared to standard rectifiers |
| Low VF (≤1.3 V @ 1 A) | Lowers conduction loss by ~15% versus comparable 1 A, 400 V rectifiers with VF > 1.5 V |
| AEC-Q101 qualified variant available | FR104GH meets automotive stress test requirements for under-hood power conversion modules |
Applications
| DC-DC Converter | Switching Inverter |
|---|---|
Use Scenario: Secondary-side synchronous rectification in isolated 12 V to 5 V/3.3 V buck-derived DC-DC modules. IC Role / Device Role / Timing Role: Fast recovery rectifier providing unidirectional current flow with minimal reverse recovery tail. Use Value: 150 ns trr limits cross-conduction loss during MOSFET dead-time, improving efficiency by ≥0.8% at 250 kHz. | Use Scenario: Output stage freewheeling diode in 24 V input, 100 W motor drive inverters. IC Role / Device Role / Timing Role: Freewheeling path for inductive kickback during IGBT turn-off. Use Value: 400 V VRRM and 30 A IFSM withstand transient overvoltage spikes up to 2× bus voltage. |
| AC-DC Adapter | Industrial Power Supply |
Use Scenario: Output rectification in 19 V, 3 A laptop adapter using quasi-resonant flyback topology. IC Role / Device Role / Timing Role: Primary output rectifier handling continuous 3 A peak current with 100 kHz switching. Use Value: Low VF reduces thermal load on secondary PCB area; RθJA = 70 °C/W enables natural convection cooling. | Use Scenario: Input bridge leg in 48 V telecom rectifier with active PFC front-end. IC Role / Device Role / Timing Role: High-reliability AC input rectification subjected to line surges and wide ambient (-40 to +85 °C). Use Value: Glass passivation and JESD201 Class 2 whisker resistance ensure stable performance over 10-year field life. |
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 = 1.15 V @ 1 A - faster recovery and lower VF than FR104G | Higher efficiency in >300 kHz designs; tighter VF tolerance improves parallel diode current sharing | Preferred when minimizing switching loss is critical and cost premium is acceptable |
| 1N4934 | VRRM = 400 V, trr = 500 ns, VF = 1.2 V @ 1 A - slower recovery but identical package and pinout | Not suitable for >100 kHz operation due to excessive reverse recovery charge; higher EMI risk | Select only for legacy designs where trr < 200 ns is not required and cost is primary constraint |
Compared with STTH1R04 and 1N4934, the FR104G delivers balanced performance: faster than 1N4934 for mid-frequency SMPS yet more cost-effective than STTH1R04, with verified thermal robustness in DO-41 layout constraints.
Availability
FR104G is available at Aetrix Electronics and suitable for DC-DC converters, switching inverters, and industrial power supplies requiring stable component supply, long-lifecycle support, and RoHS-compliant discrete rectification.
Supply support for FR104G 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 FR101G–FR107G family was designed for cost-sensitive, high-volume power conversion applications demanding reliable fast recovery performance across 50 V to 1000 V ratings in standard DO-41 packaging.
FAQ
What is the maximum repetitive peak reverse voltage (VRRM) of the FR104G?
The FR104G has a VRRM rating of 400 V, meaning it can reliably block up to 400 V of reverse voltage in repetitive operation without breakdown. This value is confirmed in the Absolute Maximum Ratings table for the FR104G row and distinguishes it from lower-voltage variants like FR103G (200 V) and higher-voltage variants like FR105G (600 V). The FR104G must not be operated beyond this limit in circuit design.
What is the reverse recovery time (trr) condition for the FR104G?
The FR104G reverse recovery time is specified as 150 ns under the exact test conditions: IF = 0.5 A, IR = 1.0 A, and Irr = 0.25 A. This measurement appears in the Electrical Specifications table and applies only to the FR104G (not FR105G or FR103G). Designers must use this condition when modeling switching losses in SPICE or calculating snubber requirements.
Is the FR104G RoHS and halogen-free compliant?
Yes, the FR104G is RoHS compliant and halogen-free per IEC 61249-2-21, as explicitly stated in the FEATURES section of the official Taiwan Semiconductor datasheet. The device uses green molding compound and pure tin-plated leads, meeting both environmental compliance and solderability standards (J-STD-002).
Does the FR104G have AEC-Q101 qualification?
The base FR104G is not AEC-Q101 qualified, but the variant FR104GH is explicitly marked as AEC-Q101 qualified in the Ordering Information table. The "H" suffix denotes automotive qualification; standard FR104G should not be used in automotive applications unless validated separately by the end customer.
What is the thermal resistance (RθJA) of the FR104G in free air?
The FR104G has a junction-to-ambient thermal resistance (RθJA) of 70 °C/W under standard free-air conditions, as listed in the Thermal Performance table. This value assumes no heatsink and standard PCB pad layout per DO-204AL footprint; actual thermal performance improves with copper pour or thermal vias.
FR104G 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 FAQ
1.How can I place an order for FR104G through Aetrix?
Please submit a Request for Quotation (RFQ) for FR104G 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 reliable?
The price and inventory of FR104G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for FR104G is usually 5 days.
3.What payment methods are accepted for FR104G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for FR104G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for FR104G?
FR104G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your FR104G 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?
For technical support, including FR104G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your FR104G requirements.
6.How does Aetrix verify that FR104G is sourced from the original manufacturer or authorized distributors?
All FR104G 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 meets industry standards.
7.What is the process for return or replacement of FR104G?
All FR104G units undergo pre-shipment inspection (PSI). If there is an issue with FR104G, 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 part is unused and in its original packaging.
Return procedure for FR104G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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