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Taiwan Semiconductor Corporation FR204G
- Part No.:
- FR204G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
FR204G.pdf
- Description:
- DIODE GEN PURP 400V 2A DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:6,800
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Product details
Overview
FR204G from Taiwan Semiconductor is a fast recovery rectifier diode with 400 V repetitive peak reverse voltage (VRRM), 2 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 - used in switching-mode power supplies for efficient AC/DC conversion.
For engineers reviewing the FR204G datasheet, FR204G pinout, FR204G application, or FR204G equivalent, key selection criteria include its DO-204AC (DO-15) package, 1.3 V max forward voltage at 2 A, 55 A surge capability, 70 °C/W junction-to-ambient thermal resistance, and AEC-Q101 qualification option (FR204GH).
Technical Context
The FR204G employs a single-die, glass-passivated PN junction optimized for fast recovery in high-frequency switching applications. Its trr of 150 ns enables reduced switching losses in DC–DC converters and inverters operating up to several hundred kHz.
It operates across –55 °C to +150 °C junction temperature range with 5 µA max reverse leakage at 25 °C and 100 µA at 125 °C, supporting stable performance in thermally demanding industrial and automotive environments when qualified as FR204GH.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 400 V - supports input rectification in 230 VAC-derived SMPS with ≥2× safety margin |
| IF | 2 A continuous - delivers sufficient output current for mid-power adapters and auxiliary rails |
| trr | 150 ns - minimizes reverse conduction loss during hard-switching transitions |
| VF max | 1.3 V @ 2 A, 25 °C - reduces conduction loss and thermal stress vs. standard rectifiers |
| IFSM | 55 A @ 8.3 ms - withstands inrush surges in offline power supplies without failure |
| RθJA | 70 °C/W - enables natural-convection cooling on standard PCB layouts without heatsink |
| Junction temp | –55 to +150 °C - ensures reliability in under-hood automotive and industrial ambient conditions |
Pinout & Package
Package: DO-204AC (DO-15), axial leaded, glass-passivated, RoHS- and halogen-free compliant. Cathode indicated by band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (lead without band) | Forward current entry point | Connected to AC input or transformer secondary; must handle full IF and IFSM |
| Cathode (lead with band) | Forward current exit / reverse blocking terminal | Connected to output filter capacitor; blocks 400 V reverse voltage with ≤5 µA leakage at 25 °C |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Enhances humidity resistance and long-term reliability in unsealed industrial enclosures |
| Low VF (1.3 V max) | Reduces power dissipation by ~15% vs. legacy 1N540x series at 2 A, lowering thermal design burden |
| Fast trr (150 ns) | Enables higher switching frequencies without excessive EMI or efficiency drop in flyback topologies |
| AEC-Q101 option (FR204GH) | Validated for automotive power modules requiring zero-defect reliability and extended temperature operation |
| DO-204AC mechanical robustness | Withstands 50 g mechanical shock and meets JESD201 Class 2 whisker resistance for solder joint integrity |
Applications
| AC/DC Adapter Power Supply | Automotive Body Control Module (BCM) |
|---|---|
Use Scenario: Rectifying 50/60 Hz or high-frequency AC from transformer secondary in wall-wart and open-frame power supplies rated 10–30 W. IC Role / Device Role / Timing Role: Primary-side fast recovery rectifier converting AC to pulsating DC before bulk capacitance filtering. Use Value: 150 ns trr and 1.3 V VF reduce conduction and switching losses, improving efficiency to >82% at full load. | Use Scenario: Input rectification in 12 V battery-fed BCM sub-systems powering lighting, window lifts, and HVAC controls. IC Role / Device Role / Timing Role: Reverse-polarity protection and AC transient suppression at power input stage. Use Value: AEC-Q101-qualified variant (FR204GH) ensures operation over –40 to +125 °C ambient with <5 µA leakage at cold start. |
| Industrial PLC Power Rail | UPS Backup Charger Circuit |
Use Scenario: Providing isolated DC bias for logic and sensor rails in programmable logic controllers exposed to factory EMI and thermal cycling. IC Role / Device Role / Timing Role: Secondary-side rectifier in auxiliary 5 V/3.3 V isolated DC–DC converter. Use Value: 70 °C/W RθJA allows derated 1.5 A operation at 70 °C ambient without forced air, simplifying thermal layout. | Use Scenario: Rectifying AC line input in battery charger section of online UPS systems with active PFC front-end. IC Role / Device Role / Timing Role: Bulk rectifier handling 2 A continuous and 55 A surge during battery reconditioning cycles. Use Value: 55 A IFSM withstands repeated 100 ms surges from grid transients 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 |
|---|---|---|---|
| STTH2R04 | Same VRRM (400 V), identical DO-15 package, but trr = 35 ns (faster), VF = 1.35 V max | Better suited for >500 kHz resonant converters where ultra-fast recovery dominates loss budget | Select STTH2R04 only if trr reduction below 100 ns is required; otherwise FR204G offers lower cost and proven field reliability |
| 1N5623 | Legacy 400 V, 2 A fast rectifier; trr = 250 ns, VF = 1.4 V max, no AEC-Q101 option | Limited to non-automotive industrial use due to lack of qualification and higher leakage (10 µA @ 25 °C) | Use 1N5623 only for cost-sensitive legacy designs where 150 ns trr and AEC-Q101 are not required |
Compared with STTH2R04 and 1N5623, the FR204G balances speed (150 ns), low VF, thermal robustness (150 °C TJ), and automotive qualification path - making it optimal for mainstream SMPS and automotive auxiliary power where cost, reliability, and thermal margin are prioritized over extreme speed.
Availability
FR204G is available at Aetrix Electronics and suitable for AC/DC adapters, automotive body control modules, and industrial PLC power rails requiring stable component supply, consistent parametric performance, and long-term manufacturing continuity.
Supply support for FR204G 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 devices, and MOSFETs since 1979.
The FR201G–FR207G family was designed specifically for high-efficiency, high-reliability AC/DC and DC/DC power conversion in industrial, computing, and automotive applications - emphasizing fast recovery, low forward loss, and rugged packaging.
FAQ
What is the maximum repetitive peak reverse voltage (VRRM) of the FR204G?
The FR204G has a VRRM rating of 400 V, confirmed in the Absolute Maximum Ratings table of the official Taiwan Semiconductor datasheet (Version H2105). This value defines the highest reverse voltage the device can block repeatedly without breakdown, making FR204G suitable for 230 VAC input-derived supplies with appropriate derating.
Does the FR204G have an AEC-Q101 qualified version?
Yes - the FR204GH variant is explicitly AEC-Q101 qualified per the Ordering Information table. The "H" suffix denotes qualification, and the datasheet confirms compliance for automotive power applications. Standard FR204G is not qualified; only FR204GH carries this certification.
What is the reverse recovery time (trr) test condition for FR204G?
The FR204G trr is specified as 150 ns under the exact test condition: IF = 0.5 A, IR = 1.0 A, Irr = 0.25 A, per the Electrical Specifications table. This differs from FR205G (250 ns) and FR206G/FR207G (500 ns), confirming voltage-dependent recovery optimization within the FR20xG series.
What package type does the FR204G use, and what are its key mechanical features?
The FR204G uses the DO-204AC (DO-15) axial package, with pure tin-plated leads compliant with J-STD-002 solderability, UL 94V-0 molding compound, and cathode polarity marked by a band. Its weight is approximately 0.400 g, and it passes JESD201 Class 2 whisker testing for long-term solder joint integrity.
How does the FR204G's forward voltage compare to other diodes in the FR20xG series?
The FR204G shares the same VF specification (max 1.3 V @ 2 A, 25 °C) across the entire FR201G–FR207G family. This uniformity indicates consistent die process and metallization - meaning forward loss performance is independent of VRRM rating, enabling direct substitution across voltage grades when thermal and surge margins allow.
FR204G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- DO-204AC, DO-15, Axial
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 400 V
- Current - Average Rectified (Io):
- 2A
- Voltage - Forward (Vf) (Max) @ If:
- 1.3 V @ 2 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-204AC (DO-15)
- Operating Temperature - Junction:
- -55°C ~ 150°C
FR204G FAQ
1.How can I place an order for FR204G through Aetrix?
Please submit a Request for Quotation (RFQ) for FR204G 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 FR204G reliable?
The price and inventory of FR204G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for FR204G is usually 5 days.
3.What payment methods are accepted for FR204G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for FR204G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for FR204G?
FR204G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your FR204G 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 FR204G?
For technical support, including FR204G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your FR204G requirements.
6.How does Aetrix verify that FR204G is sourced from the original manufacturer or authorized distributors?
All FR204G 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 FR204G meets industry standards.
7.What is the process for return or replacement of FR204G?
All FR204G units undergo pre-shipment inspection (PSI). If there is an issue with FR204G, 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 FR204G part is unused and in its original packaging.
Return procedure for FR204G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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