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Taiwan Semiconductor Corporation FR304G
- Part No.:
- FR304G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-201AD, Axial
- Datasheet:
-
FR304G.pdf
- Description:
- DIODE GEN PURP 400V 3A DO201AD
- Quantity:
- Payment:
- Shipping:
Inventory:6,240
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Product details
Overview
FR304G from Taiwan Semiconductor is a fast recovery rectifier diode in DO-201AD package, rated for 400 V repetitive peak reverse voltage (VRRM), 3 A average forward current (IF), and 125 A non-repetitive surge current (IFSM), with 150 ns reverse recovery time (trr) under IF = 0.5 A, IR = 1.0 A, Irr = 0.25 A conditions-used in switching-mode DC/DC converters requiring low-loss rectification.
For engineers reviewing the FR304G datasheet, FR304G pinout, FR304G application, or FR304G equivalent, key selection criteria include VRRM = 400 V, trr = 150 ns, VF ≤ 1.3 V at 3 A, IR ≤ 5 µA at 25°C, and DO-201AD mechanical compatibility in high-frequency power supplies.
Technical Context
The FR304G employs a single-die silicon PN junction optimized for fast recovery (trr = 150 ns) and low forward voltage drop (VF ≤ 1.3 V @ 3 A, 25°C), enabling efficient operation in 50–500 kHz switching converters. Its thermal resistance RθJA = 35 °C/W supports sustained 3 A conduction with appropriate PCB copper area.
Designed for unidirectional current flow, it features cathode-band polarity marking, pure tin-plated leads compliant with J-STD-002, and UL 94V-0 molding compound-meeting automotive-grade reliability per AEC-Q101 when ordered with "H" suffix (e.g., FR304GH).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 400 V - Maximum reverse blocking voltage before breakdown; sets upper limit for input/output voltage rails in flyback or boost converters. |
| IF(AV) | 3 A - Continuous average forward current rating; defines minimum heatsinking requirement for 100% duty-cycle operation. |
| trr | 150 ns - Measured at IF = 0.5 A, IR = 1.0 A, Irr = 0.25 A; enables stable switching up to ~500 kHz with minimal switching loss. |
| VF | ≤1.3 V @ 3 A, 25°C - Directly determines conduction loss (Pcond ≈ IF × VF); lower VF improves efficiency vs. standard rectifiers. |
| IR | ≤5 µA @ 400 V, 25°C - Leakage current level affecting standby power and high-impedance bias networks. |
| RθJA | 35 °C/W - Junction-to-ambient thermal resistance; requires ≥1.5 cm² 2-oz copper pad for safe 3 A operation at TA = 70°C. |
Pinout & Package
DO-201AD axial-leaded package with cathode indicated by a painted band on the body; leads are pure tin-plated, solderable per J-STD-002, and meet JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unbanded end) | Forward current entry point | Connected to lower-potential node (e.g., transformer secondary center-tap or switch node return path). |
| Cathode (banded end) | Forward current exit / reverse blocking terminal | Connected to output capacitor positive rail; blocks reverse voltage up to 400 V during off-state. |
Key Features
| Feature | Design Value |
|---|---|
| Fast recovery time (trr) | 150 ns enables high-frequency switching (>300 kHz) with reduced turn-off loss and EMI vs. standard rectifiers. |
| Low forward voltage (VF) | ≤1.3 V at 3 A minimizes conduction loss-critical for >85% efficiency targets in compact DC/DC modules. |
| High surge capability (IFSM) | 125 A withstands inrush and transient overloads without failure-supports robust startup in industrial SMPS. |
| AEC-Q101 qualification option | Available as FR304GH for automotive applications requiring validated reliability under temperature cycling and humidity testing. |
Applications
| DC/DC Converter Rectification | Switching Inverter Output Stage |
|---|---|
Use Scenario: Secondary-side rectification in isolated 48 V–12 V flyback converter operating at 250 kHz. IC Role / Device Role / Timing Role: Unidirectional current valve converting high-frequency AC from transformer into regulated DC output. Use Value: 150 ns trr prevents reverse conduction overlap with synchronous MOSFETs; 1.3 V VF limits power loss to <3.9 W at 3 A. | Use Scenario: Output freewheeling path in 3-phase IGBT-based motor inverter (20 kHz PWM). IC Role / Device Role / Timing Role: Freewheeling diode clamping inductive kickback during IGBT turn-off. Use Value: 400 V VRRM safely handles 325 V DC bus + 100 V switching overshoot; 125 A IFSM absorbs motor regeneration surges. |
| AC-DC Adapter Output | Industrial Power Supply Input Bridge |
Use Scenario: Output rectifier in universal-input (90–264 VAC), 36 W adapter with active PFC front-end. IC Role / Device Role / Timing Role: Final-stage low-loss rectifier delivering clean 12 V/3 A to load. Use Value: 5 µA IR at 25°C ensures negligible standby leakage; DO-201AD footprint fits legacy board layouts. | Use Scenario: One leg of full-wave bridge rectifier in 24 V/10 A industrial PSU fed from 35 VAC transformer. IC Role / Device Role / Timing Role: Half-bridge arm handling 3 A average current with 125 A surge tolerance. Use Value: 35 °C/W RθJA allows operation without heatsink at 70°C ambient when mounted on 2-oz copper. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fast recovery rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH3L04S (STMicroelectronics) | VRRM = 400 V, trr = 35 ns, VF = 1.15 V @ 3 A - faster, lower VF, but SMD (TO-277A) package. | Requires PCB redesign for surface-mount assembly; unsuitable for through-hole legacy systems. | Select when upgrading to SMT for higher density and lower parasitic inductance. |
| ES3D (ON Semiconductor) | VRRM = 200 V, trr = 35 ns, VF = 0.92 V @ 3 A - lower voltage rating, faster, lower VF, same DO-201AD package. | Not suitable for 400 V bus applications; limited to ≤200 V output stages. | Choose only if system VR does not exceed 200 V and lowest possible VF is prioritized. |
Compared with STTH3L04S and ES3D, the FR304G offers proven through-hole reliability and exact 400 V VRRM compliance in DO-201AD-making it optimal for cost-sensitive, high-volume industrial adapters where layout reuse and surge margin are critical.
Availability
FR304G is available at Aetrix Electronics and suitable for DC/DC converters, switching inverters, and industrial AC-DC adapters requiring stable component supply with consistent DO-201AD mechanical fit and 400 V/3 A performance.
Supply support for FR304G 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 FR301G–FR307G series was designed specifically for high-efficiency, high-reliability power conversion-targeting cost-sensitive yet thermally demanding applications such as open-frame SMPS, LED drivers, and motor control power stages.
FAQ
What is the maximum repetitive peak reverse voltage (VRRM) for FR304G?
The FR304G has a VRRM rating of 400 V, meaning it can reliably block up to 400 V of reverse voltage in repetitive operation. This value is fixed per the FR304G ordering code and is confirmed in the absolute maximum ratings table-distinct from FR303G (200 V) and FR305G (600 V). Exceeding 400 V risks avalanche breakdown and permanent damage to the FR304G.
What does the 'G' suffix indicate in FR304G?
The 'G' suffix in FR304G denotes RoHS-compliant, halogen-free construction per IEC 61249-2-21, with UL 94V-0 molding compound and pure tin-plated leads. It does not imply AEC-Q101 qualification-that requires the 'H' suffix (e.g., FR304GH). The FR304G remains suitable for industrial and commercial applications meeting standard reliability requirements.
Is FR304G pin-compatible with other DO-201AD rectifiers like 1N5408?
Yes, the FR304G uses the standard DO-201AD package with axial leads and cathode-band polarity marking-identical mechanical and mounting dimensions to 1N5408 and similar through-hole rectifiers. However, electrical differences exist: FR304G offers faster trr (150 ns vs. ~2000 ns) and higher VRRM (400 V vs. 1000 V for 1N5408), so direct substitution requires verification of switching frequency and thermal design for the FR304G.
What is the reverse recovery time (trr) test condition for FR304G?
The FR304G trr of 150 ns is measured under strictly defined conditions: forward current IF = 0.5 A, reverse current IR = 1.0 A, reverse recovery current Irr = 0.25 A, and TJ = 25°C. This differs from conditions used for FR305G (250 ns) and FR307G (500 ns), confirming FR304G's optimized speed for mid-voltage switching applications.
Can FR304G be used in automotive applications?
The base FR304G is not AEC-Q101 qualified; however, the functionally identical FR304GH variant is certified for automotive use. For automotive designs requiring validated reliability-including temperature cycling, humidity testing, and board-level vibration-engineers must specify FR304GH, not FR304G. The FR304G remains appropriate for non-automotive industrial and consumer power supplies.
FR304G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- DO-201AD, Axial
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 400 V
- Current - Average Rectified (Io):
- 3A
- Voltage - Forward (Vf) (Max) @ If:
- 1.3 V @ 3 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 150 ns
- Current - Reverse Leakage @ Vr:
- 5 µA @ 400 V
- Capacitance @ Vr, F:
- 30pF @ 4V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-201AD
- Operating Temperature - Junction:
- -55°C ~ 150°C
FR304G FAQ
1.How can I place an order for FR304G through Aetrix?
Please submit a Request for Quotation (RFQ) for FR304G 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 FR304G reliable?
The price and inventory of FR304G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for FR304G is usually 5 days.
3.What payment methods are accepted for FR304G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for FR304G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for FR304G?
FR304G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your FR304G 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 FR304G?
For technical support, including FR304G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your FR304G requirements.
6.How does Aetrix verify that FR304G is sourced from the original manufacturer or authorized distributors?
All FR304G 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 FR304G meets industry standards.
7.What is the process for return or replacement of FR304G?
All FR304G units undergo pre-shipment inspection (PSI). If there is an issue with FR304G, 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 FR304G part is unused and in its original packaging.
Return procedure for FR304G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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