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

Taiwan Semiconductor Corporation RSFGL

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

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Part No.:: RSFGL

Manufacturer:: Taiwan Semiconductor Corporation

Category:: Single Diodes

Package:: DO-219AB

Datasheet:: RSFGL.pdf

Description:: DIODE GP 400V 500MA SUB SMA

Quantity:: RFQ Add To RFQ list

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Inventory:14,904

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Product details

Overview

RSFGL from Taiwan Semiconductor is a fast recovery surface-mount rectifier diode with 400 V repetitive peak reverse voltage (V_RRM), 0.5 A average forward current (I_F), and 150 ns reverse recovery time (t_rr) under I_F = 0.5 A / I_R = 1.0 A test conditions, used in high-efficiency DC-DC converters and switching inverters.

For engineers reviewing the RSFGL datasheet, RSFGL pinout, RSFGL application, or RSFGL equivalent, key selection factors include its Sub SMA package compatibility, 1.3 V max forward voltage at 0.5 A, 5 µA max reverse leakage at 25°C, junction-to-ambient thermal resistance of 150 °C/W, and RoHS/halogen-free compliance for industrial power designs.

Technical Context

The RSFGL employs a glass-passivated silicon die in a single-die configuration, metallurgically bonded for high-temperature reliability up to 150°C junction temperature. Its fast recovery performance enables efficient operation in high-frequency switching topologies.

Designed for automated SMT placement, the device features matte tin-plated leads compliant with J-STD-002 solderability and JESD 201 Class 2 whisker resistance. Polarity is marked by a cathode band on the Sub SMA case.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	400 V - Maximum non-repetitive reverse voltage the device blocks without breakdown; defines usable input voltage range in flyback or buck-derived topologies.
I_F	0.5 A - Continuous average forward current rating at 75°C ambient; determines maximum steady-state output capability in low-power SMPS.
t_rr	150 ns - Measured with I_F = 0.5 A, I_R = 1.0 A, I_rr = 0.25 A; enables operation up to ~2 MHz switching frequency before significant recovery loss dominates efficiency.
V_F (max)	1.3 V @ 0.5 A, 25°C - Forward conduction loss directly impacts conduction efficiency and thermal rise in compact layouts.
R_θJA	150 °C/W - Junction-to-ambient thermal resistance under standard JEDEC PCB conditions; informs minimum copper area needed for thermal management.
I_R (max)	5 µA @ 25°C - Reverse leakage current at rated V_RRM; critical for low-power standby modes and high-impedance sensing circuits.

Pinout & Package

Package: Sub SMA - Surface-mount plastic package with gull-wing leads, UL 94V-0 rated molding compound, 0.019 g typical weight, and cathode polarity indicated by a band.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Forward current entry point	Connected to lower-potential node (e.g., transformer secondary center-tap or switch node return); must handle full I_F and I_FSM surge.
Cathode	Forward current exit point	Connected to output rail or filter capacitor; polarity marking band identifies this terminal; carries same current as anode but defines reverse blocking direction.

Key Features

Feature	Design Value
Glass passivated junction	Enables stable long-term reverse leakage performance and resistance to humidity-induced degradation in unsealed environments.
Fast recovery (150 ns)	Reduces switching losses in 100–500 kHz SMPS designs compared to standard rectifiers, improving overall converter efficiency by 1–3%.
Sub SMA package	Supports automated pick-and-place assembly and provides mechanical robustness for reflow profiles up to 260°C peak temperature.
Junction temp limit (150°C)	Allows operation in thermally constrained spaces such as enclosed power modules or high-density DC-DC bricks without derating below 75°C ambient.

Applications

DC-DC Converter Output Rectification	Switching Inverter Freewheeling Diode
Use Scenario: Secondary-side rectification in isolated 5–24 V output flyback or forward converters delivering ≤12 W. IC Role / Device Role / Timing Role: Unidirectional current path converting high-frequency AC from transformer secondary into regulated DC output. Use Value: 150 ns t_rr minimizes reverse recovery charge loss during MOSFET turn-on, preserving >88% efficiency at 250 kHz switching.	Use Scenario: Freewheeling path across inductive loads (e.g., motor windings or solenoids) in half-bridge inverters operating at 20–100 kHz. IC Role / Device Role / Timing Role: Provides low-loss current recirculation path when upper switch turns off, clamping inductive kickback. Use Value: 400 V V_RRM safely handles reflected transients up to 320 V DC bus; 10 A I_FSM withstands motor startup surges.
AC-DC Adapter Auxiliary Supply	Industrial Sensor Power Rectification
Use Scenario: Low-current auxiliary winding rectification in universal-input (85–265 VAC) offline adapters powering control ICs and bias rails. IC Role / Device Role / Timing Role: Converts low-power AC from auxiliary transformer winding into stable 12–15 V DC for PWM controller and gate drivers. Use Value: 5 µA max I_R at 25°C ensures minimal standby power draw; Sub SMA footprint fits tight board space near controller IC.	Use Scenario: Input-stage rectification for 24 VDC-powered analog sensor modules in factory automation systems. IC Role / Device Role / Timing Role: Protects downstream LDOs and signal conditioners from reverse polarity or AC-coupled noise on field wiring. Use Value: Glass passivation and 150°C T_J rating ensure reliability in unventilated enclosures with ambient temps up to 85°C.

DC-DC Converter Output Rectification

Switching Inverter Freewheeling Diode

Use Scenario: Secondary-side rectification in isolated 5–24 V output flyback or forward converters delivering ≤12 W.

IC Role / Device Role / Timing Role: Unidirectional current path converting high-frequency AC from transformer secondary into regulated DC output.

Use Value: 150 ns t_rr minimizes reverse recovery charge loss during MOSFET turn-on, preserving >88% efficiency at 250 kHz switching.

Use Scenario: Freewheeling path across inductive loads (e.g., motor windings or solenoids) in half-bridge inverters operating at 20–100 kHz.

IC Role / Device Role / Timing Role: Provides low-loss current recirculation path when upper switch turns off, clamping inductive kickback.

Use Value: 400 V V_RRM safely handles reflected transients up to 320 V DC bus; 10 A I_FSM withstands motor startup surges.

AC-DC Adapter Auxiliary Supply

Industrial Sensor Power Rectification

Use Scenario: Low-current auxiliary winding rectification in universal-input (85–265 VAC) offline adapters powering control ICs and bias rails.

IC Role / Device Role / Timing Role: Converts low-power AC from auxiliary transformer winding into stable 12–15 V DC for PWM controller and gate drivers.

Use Value: 5 µA max I_R at 25°C ensures minimal standby power draw; Sub SMA footprint fits tight board space near controller IC.

Use Scenario: Input-stage rectification for 24 VDC-powered analog sensor modules in factory automation systems.

IC Role / Device Role / Timing Role: Protects downstream LDOs and signal conditioners from reverse polarity or AC-coupled noise on field wiring.

Use Value: Glass passivation and 150°C T_J rating ensure reliability in unventilated enclosures with ambient temps up to 85°C.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
STTH1L06S	600 V V_RRM, 1.0 A I_F, 75 ns t_rr, SMA package	Higher voltage rating and faster recovery, but double the forward current rating and higher V_F (1.7 V)	Preferred where higher V_RRM margin or tighter t_rr is required; may require layout review due to higher I_F thermal mass.
MBR0540T3G	40 V V_RRM, 0.5 A I_F, Schottky structure, 0.45 V V_F, SOD-123 package	Lower V_RRM, no reverse recovery, but unsuitable above 40 V reverse stress	Only viable in low-voltage (<30 V) synchronous rectifier or OR-ing applications; not a functional substitute for 400 V blocking.

Compared with STTH1L06S and MBR0540T3G, the RSFGL offers optimal balance of 400 V blocking, 150 ns recovery, and Sub SMA manufacturability for cost-sensitive 10–15 W industrial SMPS-neither alternative matches its exact V_RRM/I_F/t_rr combination in the same package.

Availability

RSFGL is available at Aetrix Electronics and suitable for DC-DC converters, switching inverters, and industrial sensor power supplies requiring stable component supply, consistent parametric performance, and RoHS-compliant sourcing.

Supply support for RSFGL 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 Taiwanese manufacturer specializing in discrete power semiconductors, including rectifiers, TVS diodes, and MOSFETs, with ISO/TS 16949 and IATF 16949 certification.

The RSFGL belongs to TSC's RSF-series fast recovery rectifier family, engineered specifically for high-frequency, high-efficiency AC-DC and DC-DC conversion in industrial and consumer power supplies.

FAQ

What is the maximum repetitive peak reverse voltage (V_RRM) for RSFGL?

The RSFGL has a V_RRM of 400 V, confirmed in the Absolute Maximum Ratings table of Taiwan Semiconductor's RSFAL–RSFML datasheet (Version M2103). This value defines the highest reverse voltage the device can block repeatedly without avalanche breakdown and is validated across production lots per JEDEC JESD22-A115 testing.

What is the reverse recovery time (t_rr) specification for RSFGL and under what test conditions?

The RSFGL has a maximum reverse recovery time (t_rr) of 150 ns, measured under the standardized condition of I_F = 0.5 A, I_R = 1.0 A, and I_rr = 0.25 A, as specified in the Electrical Specifications section of the official datasheet. This parameter is critical for minimizing switching losses in high-frequency power converters.

Is RSFGL RoHS and halogen-free compliant?

Yes, RSFGL is RoHS compliant and halogen-free in accordance with IEC 61249-2-21, as explicitly stated in the FEATURES section of the Taiwan Semiconductor RSFAL–RSFML datasheet. The Sub SMA molding compound meets UL 94V-0 flammability rating, and all plating and materials conform to these environmental standards.

What is the thermal resistance from junction to ambient (R_θJA) for RSFGL?

The RSFGL has a junction-to-ambient thermal resistance (R_θJA) of 150 °C/W, specified under standard JEDEC test conditions (single-layer 1 in² copper pad). This value guides thermal design for PCB layout, especially in confined spaces where forced airflow is absent, and assumes no additional heatsinking beyond the recommended pad layout.

Does RSFGL have a defined moisture sensitivity level (MSL) rating?

Yes, RSFGL has a moisture sensitivity level (MSL) of Level 1 per J-STD-020, meaning it is not moisture-sensitive and does not require dry-packaging or floor-life controls prior to reflow soldering. This simplifies handling and eliminates bake requirements in standard SMT assembly lines.

RSFGL Specifications

Product attributes: Attribute value

Manufacturer:: Taiwan Semiconductor Corporation

Series:: -

Package/Case:: DO-219AB

Packaging:: Tape & Reel (TR)

Product Status:: Not For New Designs

Technology:: Standard

Voltage - DC Reverse (Vr) (Max):: 400 V

Current - Average Rectified (Io):: 500mA

Voltage - Forward (Vf) (Max) @ If:: 1.3 V @ 500 mA

Speed:: Fast Recovery =< 500ns, > 200mA (Io)

Reverse Recovery Time (trr):: 150 ns

Current - Reverse Leakage @ Vr:: 5 µA @ 400 V

Capacitance @ Vr, F:: 4pF @ 4V, 1MHz

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: Sub SMA

Operating Temperature - Junction:: -55°C ~ 150°C

RSFGL FAQ

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

Please submit a Request for Quotation (RFQ) for RSFGL 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 RSFGL reliable?

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

3.What payment methods are accepted for RSFGL?

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

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for RSFGL?

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

Once your RSFGL 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 RSFGL?

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

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

All RSFGL 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 RSFGL meets industry standards.

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

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

Return procedure for RSFGL:

1.Submit a request within 90 days.

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

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