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

Taiwan Semiconductor Corporation FR203G-T

Name: FR203G-T
Brand: Taiwan Semiconductor Corporation
SKU: FR203G-T
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: FR203G-T

Manufacturer:: Taiwan Semiconductor Corporation

Category:: Single Diodes

Package:: DO-204AC, DO-15, Axial

Datasheet:: FR203G-T.pdf

Description:: 150NS, 2A, 200V, FAST RECOVERY R

Quantity:: RFQ Add To RFQ list

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Inventory:7,589

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Product details

Overview

FR203G-T from Taiwan Semiconductor is a 2A, 200V fast recovery rectifier diode in DO-204AC (DO-15) package, featuring 150 ns reverse recovery time, 1.3 V max forward voltage at 2 A, and 55 A surge current capability. It serves as a primary-side output rectifier in offline SMPS and DC-DC converters requiring efficient high-frequency switching.

For engineers reviewing the FR203G-T datasheet, FR203G-T pinout, FR203G-T application, or FR203G-T equivalent, key selection criteria include V_RRM = 200 V, I_F = 2 A, t_rr = 150 ns, thermal resistance R_θJA = 70 °C/W, and DO-204AC mechanical compatibility with standard through-hole layouts.

Technical Context

This single-die, glass-passivated fast recovery rectifier operates with low conduction loss (V_F ≤ 1.3 V @ 2 A, 25°C) and controlled switching behavior (t_rr = 150 ns), enabling reduced EMI and improved efficiency in 20–100 kHz switching topologies. Its 55 A non-repetitive surge rating supports transient load handling in industrial power supplies.

The device exhibits low junction capacitance (C_J = 10 pF @ 4 V, 1 MHz) and stable reverse leakage (I_R ≤ 5 µA @ 25°C, ≤ 100 µA @ 125°C), supporting reliable operation across –55°C to +150°C junction temperature range under continuous 2 A DC forward current.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	200 V - Maximum repetitive reverse voltage; defines safe blocking capability in 170 V_AC input rectification.
I_F	2 A - Continuous forward current rating; supports sustained output delivery in compact 5–25 W SMPS designs.
t_rr	150 ns - Reverse recovery time; enables efficient operation up to ~100 kHz without excessive switching loss.
V_F max	1.3 V @ 2 A, 25°C - Forward voltage drop; determines conduction loss of ~2.6 W at full load, impacting thermal design.
R_θJA	70 °C/W - Junction-to-ambient thermal resistance; requires ≥ 1.5 cm² copper pour for safe 2 A operation at 70°C ambient.
I_FSM	55 A @ 8.3 ms - Non-repetitive surge current; withstands inrush and short-circuit transients in unregulated supplies.
C_J	10 pF @ 4 V, 1 MHz - Junction capacitance; minimizes capacitive coupling noise in high dv/dt gate-drive or snubber circuits.

Pinout & Package

DO-204AC (DO-15) axial-leaded package with cathode band marking; leads are pure tin-plated, solderable per J-STD-002, and meet JESD 201 Class 1A whisker resistance.

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) in half-wave or full-wave configurations.
Cathode	Forward current exit / reverse blocking terminal	Marked by band; ties to output filter capacitor positive rail; must sustain full V_RRM during off-state.

Key Features

Feature	Design Value
Glass passivated junction	Enhances moisture resistance and long-term reliability in humid or thermally cycled environments.
Low V_F and low t_rr	Reduces combined conduction + switching losses versus standard recovery diodes, improving overall converter efficiency by 1–2%.
High I_FSM rating	Eliminates need for external surge limiting in cost-sensitive AC/DC adapters and open-frame power supplies.
RoHS & halogen-free compliance	Meets IEC 61249-2-21; supports environmentally regulated industrial and consumer end-equipment certifications.

Applications

AC/DC Adapter Output Rectification	Industrial DC-DC Converter Secondary Side
Use Scenario: 12 V/2 A output stage in universal-input 50–240 V_AC wall adapters powering IoT sensors and embedded controllers. IC Role / Device Role / Timing Role: Fast recovery rectifier converting transformer secondary AC to filtered DC; placed directly after center-tapped or bridge output. Use Value: 150 ns t_rr minimizes reverse recovery ringing, reducing EMI filter component count and PCB area vs. standard rectifiers.	Use Scenario: 24 V/2 A isolated output in DIN-rail mounted PLC power modules operating continuously at 60°C ambient. IC Role / Device Role / Timing Role: Primary output rectifier in forward or flyback topology; handles steady 2 A load with intermittent 55 A surges during motor startup. Use Value: 70 °C/W R_θJA and 150°C T_JMAX enable natural-convection cooling without heatsink in space-constrained enclosures.
Switching Mode Inverter Auxiliary Supply	General-Purpose High-Frequency Rectification
Use Scenario: 15 V bias supply for gate drivers and control ICs in 3-phase IGBT inverters used in HVAC compressors. IC Role / Device Role / Timing Role: Fast recovery rectifier in auxiliary flyback converter; switches at 50–70 kHz with tight voltage regulation requirements. Use Value: Low C_J (10 pF) prevents coupling of high dv/dt switching noise into sensitive analog control circuitry.	Use Scenario: Replacement for legacy 1N400x series in legacy equipment upgrades requiring faster recovery and lower loss. IC Role / Device Role / Timing Role: General-purpose rectifier in test fixtures, lab power supplies, and LED driver front-ends where 200 V blocking and 2 A current are required. Use Value: Direct DO-204AC footprint compatibility allows drop-in replacement without PCB rework while delivering measurable efficiency gain.

AC/DC Adapter Output Rectification

Industrial DC-DC Converter Secondary Side

Use Scenario: 12 V/2 A output stage in universal-input 50–240 V_AC wall adapters powering IoT sensors and embedded controllers.

IC Role / Device Role / Timing Role: Fast recovery rectifier converting transformer secondary AC to filtered DC; placed directly after center-tapped or bridge output.

Use Value: 150 ns t_rr minimizes reverse recovery ringing, reducing EMI filter component count and PCB area vs. standard rectifiers.

Use Scenario: 24 V/2 A isolated output in DIN-rail mounted PLC power modules operating continuously at 60°C ambient.

IC Role / Device Role / Timing Role: Primary output rectifier in forward or flyback topology; handles steady 2 A load with intermittent 55 A surges during motor startup.

Use Value: 70 °C/W R_θJA and 150°C T_JMAX enable natural-convection cooling without heatsink in space-constrained enclosures.

Switching Mode Inverter Auxiliary Supply

General-Purpose High-Frequency Rectification

Use Scenario: 15 V bias supply for gate drivers and control ICs in 3-phase IGBT inverters used in HVAC compressors.

IC Role / Device Role / Timing Role: Fast recovery rectifier in auxiliary flyback converter; switches at 50–70 kHz with tight voltage regulation requirements.

Use Value: Low C_J (10 pF) prevents coupling of high dv/dt switching noise into sensitive analog control circuitry.

Use Scenario: Replacement for legacy 1N400x series in legacy equipment upgrades requiring faster recovery and lower loss.

IC Role / Device Role / Timing Role: General-purpose rectifier in test fixtures, lab power supplies, and LED driver front-ends where 200 V blocking and 2 A current are required.

Use Value: Direct DO-204AC footprint compatibility allows drop-in replacement without PCB rework while delivering measurable efficiency gain.

Equivalent & Alternatives

The following parts are listed as comparable options for similar fast recovery rectifier applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
STTH2R02	V_RRM = 200 V, t_rr = 35 ns, V_F = 1.15 V @ 2 A - faster recovery and lower V_F, but higher cost and tighter layout sensitivity.	Better suited for >200 kHz designs; less tolerant of layout parasitics due to faster edge rates.	Select STTH2R02 when optimizing for minimal switching loss in high-frequency PFC or resonant converters.
1N4936G	V_RRM = 200 V, t_rr = 200 ns, V_F = 1.4 V @ 1 A - slower recovery and higher V_F; rated only at 1 A continuous.	Limited to <10 W applications; insufficient I_F rating for sustained 2 A loads.	Use 1N4936G only for low-power signal rectification or where cost is primary constraint and thermal margin is generous.

Compared with STTH2R02 and 1N4936G, FR203G-T delivers balanced performance: 150 ns t_rr and 2 A I_F support mainstream 50–100 kHz SMPS without over-spec'ing cost or layout complexity, while maintaining robust surge and thermal margins.

Availability

FR203G-T is available at Aetrix Electronics and suitable for AC/DC adapters, industrial DC-DC converters, and switching mode inverters requiring stable component supply, consistent parametric performance, and RoHS-compliant manufacturing.

Supply support for FR203G-T 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 global power, automotive, and industrial markets since 1979.

The FR20xG-T series targets cost-effective, high-reliability power conversion applications, emphasizing fast recovery, thermal robustness, and standardized DO-204AC packaging for broad design reuse across consumer, industrial, and infrastructure power systems.

FAQ

What is the maximum junction temperature rating for FR203G-T?

The FR203G-T has a maximum junction temperature (T_JMAX) of +150°C, allowing operation in high-ambient environments such as enclosed industrial power supplies or automotive under-hood auxiliary circuits. Derating curves confirm usable 2 A current capability up to 100°C ambient with adequate PCB copper area, and the FR203G-T must be operated within this thermal limit to ensure long-term reliability and avoid parametric shift.

Does FR203G-T have a specified reverse recovery charge (Q_rr) value?

No, the official Taiwan Semiconductor datasheet for FR203G-T does not specify reverse recovery charge (Q_rr). Only reverse recovery time (t_rr = 150 ns) is provided under defined test conditions (I_F = 0.5 A, I_R = 1.0 A, I_rr = 0.25 A). Designers requiring Q_rr for loss modeling should consult characterization data from application notes or perform bench measurement using the recommended test circuit in Figure 6 of the FR20xG-T datasheet.

Is FR203G-T compatible with lead-free reflow soldering processes?

FR203G-T is designed for wave and hand soldering per J-STD-002, with pure tin-plated leads. While its DO-204AC package is mechanically robust, it is not rated for standard lead-free reflow (260°C peak). For lead-free assembly, use selective soldering or verify thermal profile compatibility with Taiwan Semiconductor's package reliability report; the FR203G-T is optimized for traditional SnPb or mixed-technology flow soldering.

What is the meaning of the "G" suffix in FR203G-T?

The "G" in FR203G-T indicates green molding compound compliant with halogen-free standards per IEC 61249-2-21. It is not a grade or temperature variant identifier. The "-T" suffix denotes tape-and-reel packaging (3,500 units per reel); the base device is identical in electrical and thermal performance to the bulk version FR203G-T A0G (ammo box).

Can FR203G-T be used in place of FR202G-T or FR204G-T in an existing design?

FR203G-T may replace FR202G-T (100 V) or FR204G-T (400 V) only if the circuit's peak reverse voltage falls within 200 V ± margin. Substituting FR203G-T for FR202G-T risks overvoltage failure in 120 V_AC surge conditions; replacing FR204G-T with FR203G-T risks breakdown in 277 V_AC or high-line industrial inputs. Always validate V_RRM margin against worst-case system transients before interchanging FR20xG-T variants.

FR203G-T 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):: 200 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 @ 200 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

FR203G-T FAQ

1.How can I place an order for FR203G-T through Aetrix?

Please submit a Request for Quotation (RFQ) for FR203G-T 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 FR203G-T reliable?

The price and inventory of FR203G-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for FR203G-T is usually 5 days.

3.What payment methods are accepted for FR203G-T?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for FR203G-T transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for FR203G-T?

FR203G-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your FR203G-T 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 FR203G-T?

For technical support, including FR203G-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your FR203G-T requirements.

6.How does Aetrix verify that FR203G-T is sourced from the original manufacturer or authorized distributors?

All FR203G-T 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 FR203G-T meets industry standards.

7.What is the process for return or replacement of FR203G-T?

All FR203G-T units undergo pre-shipment inspection (PSI). If there is an issue with FR203G-T, 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 FR203G-T part is unused and in its original packaging.

Return procedure for FR203G-T:

1.Submit a request within 90 days.

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

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