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

Taiwan Semiconductor Corporation RSFBL

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

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Part No.:: RSFBL

Manufacturer:: Taiwan Semiconductor Corporation

Category:: Single Diodes

Package:: SOD-123

Datasheet:: RSFBL.pdf

Description:: 150NS, 0.5A, 100V, FAST RECOVERY

Quantity:: RFQ Add To RFQ list

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Inventory:7,165

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Product details

Overview

RSFBL from Taiwan Semiconductor is a 0.5A, 100V fast recovery surface-mount rectifier in Sub SMA package, featuring 150 ns reverse recovery time, 1.3 V max forward voltage at 0.5 A, and 10 A peak surge current - used in DC-DC converters and switching-mode inverters for high-efficiency power conversion.

For engineers reviewing the RSFBL datasheet, RSFBL pinout, RSFBL application, or RSFBL equivalent, key selection criteria include repetitive peak reverse voltage (100 V), thermal resistance (R_θJA = 150 °C/W), junction temperature range (–55 to +150 °C), and moisture sensitivity level (J-STD-020 Level 1).

Technical Context

The RSFBL is a single-die, glass-passivated fast recovery rectifier optimized for high-frequency switching applications. Its metallurgically bonded construction ensures stable operation up to 150 °C junction temperature, while the Sub SMA package supports automated placement and meets UL 94V-0 flammability requirements.

With 150 ns reverse recovery time and 4 pF junction capacitance at 1 MHz/4 V, the RSFBL minimizes switching losses and EMI in compact power supplies. Its cathode-band polarity marking and matte tin-plated leads comply with J-STD-002 solderability and JESD 201 Class 2 whisker resistance standards.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	100 V - maximum repetitive reverse blocking voltage; defines safe operating range in flyback or buck-boost topologies
I_F	0.5 A continuous - average forward current rating at 75 °C ambient; sets thermal derating baseline
t_rr	150 ns - measured at I_F = 0.5 A, I_R = 1.0 A, I_rr = 0.25 A; enables >100 kHz switching without excessive loss
V_F (max)	1.3 V at I_F = 0.5 A, T_J = 25 °C - directly impacts conduction loss and thermal rise in low-voltage output stages
R_θJA	150 °C/W - junction-to-ambient thermal resistance; determines required PCB copper area for thermal management
I_FSM	10 A - non-repetitive surge rating for startup or fault conditions; supports robust input rectification
C_J	4 pF at 1 MHz, V_R = 4 V - low capacitance reduces high-frequency ringing and EMI generation

Pinout & Package

Package: Sub SMA - surface-mount, molded plastic case with matte tin-plated leads, cathode indicated by band, UL 94V-0 rated, weight ≈ 0.019 g.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Forward current entry point	Connected to lower-potential side of AC input or switch node; requires thermal relief on PCB pour
Cathode	Forward current exit / reverse-blocking terminal	Marked by band; ties to positive rail or output capacitor; critical for polarity-sensitive layouts

Key Features

Feature	Design Value
Glass passivated junction	Enables stable leakage performance across –55 to +150 °C and improves long-term reliability under humidity stress
Fast recovery (150 ns)	Reduces switching loss and diode-induced voltage spikes in 100–500 kHz SMPS designs
Moisture sensitivity Level 1	Eliminates bake requirement before reflow; compatible with standard SMT assembly lines
Halogen-free (IEC 61249-2-21)	Meets environmental compliance for industrial and consumer end equipment without compromising flame retardancy
High-temperature metallurgical bond	Maintains mechanical integrity and thermal contact during repeated thermal cycling in automotive-grade power modules

Applications

DC-DC Converter	Switching Inverter
Use Scenario: Secondary-side synchronous rectification in isolated 12 V to 5 V/3.3 V buck-derived converters. IC Role / Device Role / Timing Role: Fast recovery rectifier handling high-frequency PWM edge transitions. Use Value: 150 ns t_rr and 1.3 V V_F reduce conduction and switching losses, improving efficiency by ~1.2% over standard FR107.	Use Scenario: Output stage freewheeling path in 24 V input H-bridge motor inverters. IC Role / Device Role / Timing Role: Unidirectional current clamp during MOSFET dead-time intervals. Use Value: Low 4 pF C_J suppresses high-frequency oscillation, enabling clean gate drive timing without added snubbers.
AC-DC Adapter	Industrial Power Supply
Use Scenario: Input bridge rectification in compact 5–15 W offline adapters with universal AC input. IC Role / Device Role / Timing Role: Primary rectification element converting 85–265 V_AC to bulk DC. Use Value: 100 V V_RRM supports 120 V_AC line with margin; 10 A I_FSM withstands cold-start surges.	Use Scenario: Auxiliary bias supply rectification in programmable logic controller (PLC) power modules. IC Role / Device Role / Timing Role: Isolated auxiliary rail rectifier feeding control ICs and optocouplers. Use Value: UL 94V-0 molding compound and JESD 201 Class 2 whisker resistance ensure long-term field reliability in harsh environments.

DC-DC Converter

Switching Inverter

Use Scenario: Secondary-side synchronous rectification in isolated 12 V to 5 V/3.3 V buck-derived converters.

IC Role / Device Role / Timing Role: Fast recovery rectifier handling high-frequency PWM edge transitions.

Use Value: 150 ns t_rr and 1.3 V V_F reduce conduction and switching losses, improving efficiency by ~1.2% over standard FR107.

Use Scenario: Output stage freewheeling path in 24 V input H-bridge motor inverters.

IC Role / Device Role / Timing Role: Unidirectional current clamp during MOSFET dead-time intervals.

Use Value: Low 4 pF C_J suppresses high-frequency oscillation, enabling clean gate drive timing without added snubbers.

AC-DC Adapter

Industrial Power Supply

Use Scenario: Input bridge rectification in compact 5–15 W offline adapters with universal AC input.

IC Role / Device Role / Timing Role: Primary rectification element converting 85–265 V_AC to bulk DC.

Use Value: 100 V V_RRM supports 120 V_AC line with margin; 10 A I_FSM withstands cold-start surges.

Use Scenario: Auxiliary bias supply rectification in programmable logic controller (PLC) power modules.

IC Role / Device Role / Timing Role: Isolated auxiliary rail rectifier feeding control ICs and optocouplers.

Use Value: UL 94V-0 molding compound and JESD 201 Class 2 whisker resistance ensure long-term field reliability in harsh environments.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
STTH1L06	Same I_F (1 A), higher V_RRM (600 V), longer t_rr (250 ns), DO-214AA package	Designed for higher-voltage PFC stages; larger footprint and higher thermal mass	Choose STTH1L06 only when >100 V reverse blocking or higher surge tolerance is required
MBR05100	Same Sub SMA package, Schottky structure, 100 V V_RRM, but lower V_F (0.85 V) and no reverse recovery (t_rr = 0)	Lower conduction loss but limited to ≤125 °C operation; unsuitable for high-temp industrial use	Prefer MBR05100 in low-heat-rise consumer adapters; RSFBL remains better for 150 °C ambient designs

Compared with STTH1L06 and MBR05100, RSFBL offers optimal balance of 100 V blocking, 150 ns speed, Sub SMA footprint, and full –55 to +150 °C operation - making it ideal for space-constrained industrial DC-DC and inverter auxiliary rails where thermal robustness and layout compatibility are critical.

Availability

RSFBL is available at Aetrix Electronics and suitable for DC-DC converters, switching inverters, and industrial power supplies requiring stable component supply, consistent parametric performance, and long-term manufacturing continuity.

Supply support for RSFBL 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 industrial, computing, and consumer markets since 1979.

The RSFBL belongs to TSC's RSF-series fast recovery rectifiers - engineered specifically for high-frequency, surface-mount power conversion systems where thermal stability, automated assembly compatibility, and tight parameter consistency are essential.

FAQ

What is the maximum junction temperature rating for RSFBL?

The RSFBL has a maximum junction temperature (T_J) of +150 °C, verified per absolute maximum ratings table in the official TSC datasheet Version M2103. This rating allows reliable operation in enclosed industrial enclosures or near heat-generating components. Derating begins above 75 °C ambient, and the device maintains specified electrical performance up to its full T_J limit. The RSFBL's metallurgically bonded construction supports this extended thermal capability without bond-wire lift or delamination.

Does RSFBL have a RoHS and halogen-free certification?

Yes, RSFBL is RoHS compliant and halogen-free per IEC 61249-2-21, as explicitly stated in the "Features" section of the TSC datasheet. The molding compound contains no brominated or chlorinated flame retardants, and lead content is below 1000 ppm. These certifications are confirmed for the Sub SMA package variant shipped under ordering code RSFBL, and apply to all production lots manufactured after Version M2103 release.

What is the reverse recovery time (t_rr) of RSFBL and how is it tested?

The RSFBL has a reverse recovery time (t_rr) of 150 ns, measured under standardized conditions: I_F = 0.5 A, I_R = 1.0 A, I_rr = 0.25 A, per the Electrical Specifications table in the TSC datasheet. This value is typified and guaranteed maximum. The test uses a half-sine waveform with defined di/dt and dv/dt, and is validated using the circuit diagram shown in Figure 6 of the same datasheet - confirming suitability for 100–300 kHz switching applications.

Is RSFBL suitable for automated SMT assembly?

Yes, RSFBL is explicitly designed for automated placement, as noted in its "Features" list. It carries J-STD-020 Moisture Sensitivity Level 1, eliminating pre-bake requirements. Its Sub SMA package has matte tin-plated leads compliant with J-STD-002 for solderability, and its 0.019 g weight ensures stable pick-and-place handling. The cathode band provides unambiguous orientation detection for vision-guided feeders - all verified in TSC's M2103 revision documentation.

What does the "FBL" marking code indicate on RSFBL devices?

The "FBL" marking code on RSFBL devices identifies the specific voltage grade within the RSF-series family: FBL = 100 V repetitive peak reverse voltage (V_RRM). This matches the "Marking code on the device" table in the TSC datasheet, where RSFBL corresponds to V_RRM = 100 V, VR(RMS) = 70 V, and shares identical thermal, electrical, and mechanical specs with other RSFxL variants except for voltage rating and trr grouping.

RSFBL Specifications

Product attributes: Attribute value

Manufacturer:: Taiwan Semiconductor Corporation

Series:: -

Package/Case:: SOD-123

Packaging:: Tape & Reel (TR)

Product Status:: Not For New Designs

Technology:: Standard

Voltage - DC Reverse (Vr) (Max):: 100 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 @ 100 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

RSFBL FAQ

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

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

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

3.What payment methods are accepted for RSFBL?

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

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for RSFBL?

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

Once your RSFBL 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 RSFBL?

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

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

All RSFBL 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 RSFBL meets industry standards.

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

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

Return procedure for RSFBL:

1.Submit a request within 90 days.

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

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