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Home > Products > Discrete Semiconductor Products > Diodes > Rectifiers > Single Diodes

Taiwan Semiconductor Corporation FR104G A0G

Name: FR104G A0G
Brand: Taiwan Semiconductor Corporation
SKU: FR104G A0G
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: FR104G A0G

Manufacturer:: Taiwan Semiconductor Corporation

Category:: Single Diodes

Package:: DO-204AL, DO-41, Axial

Datasheet:: FR104G A0G.pdf

Description:: DIODE GEN PURP 400V 1A DO204AL

Quantity:: RFQ Add To RFQ list

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Product details

Overview

FR104G A0G from Taiwan Semiconductor is a 1A, 400V fast recovery rectifier diode in DO-204AL (DO-41) package, featuring 150 ns reverse recovery time, 1.3 V max forward voltage at 1 A, and 30 A surge current capability - used in switching-mode DC/DC converters requiring efficient unidirectional conduction.

For engineers reviewing the FR104G A0G datasheet, FR104G A0G pinout, FR104G A0G application, or FR104G A0G equivalent, key selection criteria include V_RRM = 400 V, I_F = 1 A, t_rr = 150 ns, thermal resistance R_θJA = 70 °C/W, and DO-41 mechanical compatibility with through-hole PCB assembly.

Technical Context

This single-die, glass-passivated fast recovery rectifier supports high-frequency switching operation with low forward power loss and stable reverse leakage (<5 µA at 25°C). Its junction-to-ambient thermal resistance of 70 °C/W enables reliable operation up to 150°C junction temperature under natural convection.

The device uses pure tin-plated leads compliant with J-STD-002 solderability and meets JESD201 Class 2 whisker resistance. Polarity is marked by cathode band; package conforms to DO-204AL outline with UL 94V-0 molding compound.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	400 V - maximum repetitive reverse voltage before breakdown; defines safe operating range in 400 V-rated DC bus or flyback clamp circuits
I_F	1 A continuous - average forward current rating; determines heat sink or trace width requirements for sustained conduction
t_rr	150 ns - measured at I_F = 0.5 A, I_R = 1.0 A, I_rr = 0.25 A; enables use in 100–500 kHz SMPS topologies with minimal switching loss
V_F (max)	1.3 V at I_F = 1 A, T_J = 25°C - directly impacts conduction loss (P_cond ≈ 1.3 W per diode at full load)
I_FSM	30 A peak (8.3 ms half-sine) - supports inrush current handling during power-up or fault transients without failure
R_θJA	70 °C/W - thermal resistance from junction to ambient; requires ≤ 70°C ambient rise above ambient for 1 W dissipation at full load

Pinout & Package

Package: DO-204AL (DO-41), axial leaded, glass-passivated silicon die, cathode indicated by band. Weight: 0.340 g.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Forward current entry point	Connected to lower-potential side (e.g., transformer secondary center-tap or switch node return path)
Cathode	Forward current exit / reverse blocking terminal	Marked by band; connects to output rail or filter capacitor positive; blocks reverse voltage up to 400 V

Key Features

Feature	Design Value
Fast recovery (t_rr = 150 ns)	Reduces switching losses and EMI in high-frequency converters vs. standard rectifiers (e.g., 1N4007: t_rr > 2 µs)
Glass passivated junction	Enhances moisture resistance and long-term reliability in humid or thermally cycled environments
Low V_F (1.3 V max)	Lowers conduction loss by ~20% compared to 1N5404 (1.5 V typ) at 1 A, improving system efficiency
RoHS & halogen-free	Complies with IEC 61249-2-21; eliminates brominated flame retardants for safer end-of-life processing

Applications

AC/DC Adapter Secondary Rectification	DC/DC Flyback Output Rectification
Use Scenario: Converts isolated AC input to regulated low-voltage DC in wall adapters (e.g., 12 V @ 1 A). IC Role / Device Role / Timing Role: Fast-recovery output rectifier replacing slower diodes to minimize switching loss and improve efficiency. Use Value: Enables 85–90% efficiency at 100 kHz switching frequency due to 150 ns t_rr and 1.3 V V_F.	Use Scenario: Rectifies high-frequency transformer output in isolated 5–24 V DC/DC modules for industrial sensors. IC Role / Device Role / Timing Role: Unidirectional current path on secondary side with low stored charge to reduce ringing and EMI. Use Value: Reduces reverse recovery energy loss by >70% versus general-purpose rectifiers, lowering MOSFET stress and heatsink size.
Automotive LED Driver Input Stage	UPS Battery Charging Circuit
Use Scenario: AC input rectification in 12 V automotive LED lighting drivers exposed to load dump transients. IC Role / Device Role / Timing Role: Primary rectifier handling 30 A surge peaks and maintaining stable V_F across -40°C to +125°C ambient. Use Value: Survives ISO 7637-2 pulse 5a (load dump) events due to 30 A I_FSM and 150°C T_JMAX.	Use Scenario: Full-wave rectification in offline battery charger front-end for 24 V sealed lead-acid systems. IC Role / Device Role / Timing Role: High-reliability, low-loss rectifier in bridge configuration with thermal stability over extended charge cycles. Use Value: Maintains <5 µA reverse leakage at 25°C and <100 µA at 125°C, preventing battery self-discharge drift.

AC/DC Adapter Secondary Rectification

DC/DC Flyback Output Rectification

Use Scenario: Converts isolated AC input to regulated low-voltage DC in wall adapters (e.g., 12 V @ 1 A).

IC Role / Device Role / Timing Role: Fast-recovery output rectifier replacing slower diodes to minimize switching loss and improve efficiency.

Use Value: Enables 85–90% efficiency at 100 kHz switching frequency due to 150 ns t_rr and 1.3 V V_F.

Use Scenario: Rectifies high-frequency transformer output in isolated 5–24 V DC/DC modules for industrial sensors.

IC Role / Device Role / Timing Role: Unidirectional current path on secondary side with low stored charge to reduce ringing and EMI.

Use Value: Reduces reverse recovery energy loss by >70% versus general-purpose rectifiers, lowering MOSFET stress and heatsink size.

Automotive LED Driver Input Stage

UPS Battery Charging Circuit

Use Scenario: AC input rectification in 12 V automotive LED lighting drivers exposed to load dump transients.

IC Role / Device Role / Timing Role: Primary rectifier handling 30 A surge peaks and maintaining stable V_F across -40°C to +125°C ambient.

Use Value: Survives ISO 7637-2 pulse 5a (load dump) events due to 30 A I_FSM and 150°C T_JMAX.

Use Scenario: Full-wave rectification in offline battery charger front-end for 24 V sealed lead-acid systems.

IC Role / Device Role / Timing Role: High-reliability, low-loss rectifier in bridge configuration with thermal stability over extended charge cycles.

Use Value: Maintains <5 µA reverse leakage at 25°C and <100 µA at 125°C, preventing battery self-discharge drift.

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	V_RRM = 400 V, t_rr = 35 ns, I_F = 1 A, DO-41 - faster recovery but higher cost and tighter layout tolerance	Preferred in >500 kHz resonant converters where ultra-low t_rr reduces EMI more critically	Select STTH1R04 only if t_rr < 50 ns is required; FR104G A0G offers better cost/performance balance at 100–300 kHz
1N4934	V_RRM = 400 V, t_rr = 200 ns, I_F = 1 A, DO-41 - slightly slower, no AEC-Q101 option, higher V_F (1.5 V max)	Suitable for non-automotive consumer power supplies where qualification and leakage are less critical	Choose 1N4934 only for cost-sensitive legacy designs; FR104G A0G provides superior thermal margin and lower leakage

Compared with STTH1R04 and 1N4934, FR104G A0G delivers optimal trade-off between recovery speed (150 ns), conduction loss (1.3 V), and qualification readiness (AEC-Q101 available), making it ideal for mid-frequency industrial and automotive-qualified power stages.

Availability

FR104G A0G is available at Aetrix Electronics and suitable for DC/DC converters, switching inverters, and general-purpose rectification requiring stable component supply, consistent DO-41 form factor, and RoHS-compliant manufacturing.

Supply support for FR104G A0G 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 devices, rectifiers, and protection components since 1979.

The FR101G–FR107G family was designed for high-efficiency, high-reliability AC/DC and DC/DC power conversion in industrial, computing, and automotive applications - emphasizing fast recovery, thermal robustness, and qualification-readiness.

FAQ

What is the maximum junction temperature rating for FR104G A0G?

The FR104G A0G has a maximum junction temperature (T_JMAX) of +150°C, verified per absolute maximum ratings in the official Taiwan Semiconductor datasheet (Version H2104). This allows operation in high-ambient environments such as enclosed power supplies or under-hood automotive locations when derated per the forward current derating curve. Thermal design must ensure junction temperature remains below this limit under worst-case load and ambient conditions.

Is FR104G A0G AEC-Q101 qualified?

The base FR104G part number is not AEC-Q101 qualified; however, the variant FR104GH (and FR104GHA0G) carries AEC-Q101 qualification. FR104G A0G itself is manufactured using the same glass-passivated die and DO-41 construction but lacks formal automotive qualification documentation. For automotive applications, specify FR104GH or confirm qualification status with Taiwan Semiconductor's latest release notes.

What does the "A0G" suffix mean in FR104G A0G?

The "A0G" suffix in FR104G A0G indicates an ammo box packaging option: 3,000 units per box, using DO-204AL (DO-41) package. It does not denote electrical or reliability differences from tape-and-reel versions (e.g., FR104G). The "G" confirms green (halogen-free) molding compound per IEC 61249-2-21, and "A0" specifies the packing format - distinct from "H" which denotes AEC-Q101 qualification.

How does FR104G A0G compare to FR107G in terms of voltage rating and application scope?

FR104G A0G is rated for 400 V repetitive peak reverse voltage (V_RRM), while FR107G is rated for 1000 V. Both share identical current (1 A), surge (30 A), and thermal specs, but FR104G A0G is optimized for 400 V-class applications like 24–48 V DC/DC outputs or universal-input AC/DC adapters. Using FR107G in a 400 V design adds unnecessary cost and capacitance (C_J increases with V_RRM), potentially degrading high-frequency performance.

Can FR104G A0G be used as a direct replacement for 1N4004 in existing designs?

FR104G A0G can replace 1N4004 in most cases due to matching DO-41 package, 1 A current rating, and 400 V V_RRM, but its 150 ns reverse recovery time (vs. >2 µs for 1N4004) significantly reduces switching loss and EMI in high-frequency circuits. However, in purely line-frequency applications (50/60 Hz), the benefit is marginal - verify layout stability if replacing in legacy linear supplies with large capacitive loads.

FR104G A0G Specifications

Product attributes: Attribute value

Manufacturer:: Taiwan Semiconductor Corporation

Series:: -

Package/Case:: DO-204AL, DO-41, Axial

Packaging:: Cut Tape (CT)

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 A0G FAQ

1.How can I place an order for FR104G A0G through Aetrix?

Please submit a Request for Quotation (RFQ) for FR104G A0G 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 A0G reliable?

The price and inventory of FR104G A0G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for FR104G A0G is usually 5 days.

3.What payment methods are accepted for FR104G A0G?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for FR104G A0G transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for FR104G A0G?

FR104G A0G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your FR104G A0G 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 A0G?

For technical support, including FR104G A0G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your FR104G A0G requirements.

6.How does Aetrix verify that FR104G A0G is sourced from the original manufacturer or authorized distributors?

All FR104G A0G 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 A0G meets industry standards.

7.What is the process for return or replacement of FR104G A0G?

All FR104G A0G units undergo pre-shipment inspection (PSI). If there is an issue with FR104G A0G, 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 A0G part is unused and in its original packaging.

Return procedure for FR104G A0G:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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