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Taiwan Semiconductor Corporation RS1BFL
- Part No.:
- RS1BFL
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- SOD-123F
- Datasheet:
-
RS1BFL.pdf
- Description:
- 150NS, 1A, 100V, FAST RECOVERY R
- Quantity:
- Payment:
- Shipping:
Inventory:7,136
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Product details
Overview
RS1BFL from Taiwan Semiconductor is a 1 A, 100 V fast recovery surface-mount rectifier in SOD-123FL package, featuring 150 ns reverse recovery time, 0.91 V forward voltage at 1.0 A/25°C, and 30 A surge current capability. It serves as a primary output rectifier in low-profile DC-DC converters requiring high efficiency and automated assembly.
For engineers reviewing the RS1BFL datasheet, RS1BFL pinout, RS1BFL application, or RS1BFL equivalent, key selection criteria include its 100 V repetitive peak reverse voltage, 150 ns trr for switching-mode operation, thermal resistance of 84 °C/W (junction-to-ambient), and compatibility with J-STD-002 soldering and J-STD-020 level-1 moisture sensitivity handling.
Technical Context
The RS1BFL employs a glass-passivated silicon junction optimized for fast recovery (trr ≤ 150 ns) and low conduction loss. Its single-die configuration and SOD-123FL package support high-density PCB layouts with minimal footprint and thermal path constraints.
Designed for operation up to 150 °C junction temperature, it delivers stable performance under transient load conditions with 30 A IFSM rating and 17 °C/W junction-to-lead thermal resistance when mounted on a 5 mm × 5 mm copper pad.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| IF (Continuous Forward Current) | 1 A - supports sustained output rectification in compact 12–24 V DC-DC modules |
| VRRM (Repetitive Peak Reverse Voltage) | 100 V - suitable for secondary-side rectification in offline flyback or half-bridge topologies up to 12 V output with margin |
| trr (Reverse Recovery Time) | 150 ns - enables efficient operation at 100–500 kHz switching frequencies without excessive switching loss |
| VF @ 1.0 A / 25°C | 0.91 V - reduces conduction loss to ~0.91 W per device at full rated current |
| RθJA | 84 °C/W - requires minimal copper area for thermal management in space-constrained applications |
| Moisture Sensitivity Level | Level 1 (J-STD-020) - allows unlimited floor life before reflow, simplifying SMT line logistics |
Pinout & Package
Package: SOD-123FL - low-profile (1.0 mm max height), surface-mount plastic case with matte tin-plated leads; polarity indicated by cathode 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) |
| Cathode | Forward current exit / reverse blocking terminal | Connected to output rail; cathode band marks this terminal for automated optical inspection and placement |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures long-term reliability under humidity and thermal cycling; eliminates need for conformal coating in industrial environments |
| Low profile (SOD-123FL) | Enables <1.0 mm board height in ultra-thin power modules and portable electronics |
| J-STD-002 solderability | Guarantees consistent wetting and joint integrity during lead-free reflow (260°C peak) |
| Halogen-free (IEC 61249-2-21) | Meets RoHS and environmental compliance requirements for export to EU, Japan, and China |
Applications
| DC-DC Converter Output Rectification | Switching Mode Power Supply (SMPS) |
|---|---|
Use Scenario: Secondary-side rectification in isolated 5–12 V, 1–3 W flyback converters for IoT sensors and USB-powered devices. IC Role / Device Role / Timing Role: Fast-recovery diode conducting during transformer reset phase; replaces slower general-purpose rectifiers to reduce switching loss. Use Value: 150 ns trr and 0.91 V VF at 1 A cut conduction + recovery losses by ≥25% vs. standard PN diodes in 250 kHz designs. | Use Scenario: Input bridge or output freewheeling in compact AC-DC adapters with universal input (85–265 VAC). IC Role / Device Role / Timing Role: Surface-mount rectifier handling repetitive 100 V reverse stress and 30 A surge transients during startup or overload. Use Value: 100 V VRRM and 30 A IFSM ensure robustness against line surges and inrush currents without derating. |
| Automated Manufacturing Assembly | Industrial Control Power Rails |
Use Scenario: High-volume pick-and-place production of power supply boards using 0805-equivalent footprint. IC Role / Device Role / Timing Role: Standardized SOD-123FL package with J-STD-002-compliant leads ensures >99.9% placement yield and solder joint reliability. Use Value: Level-1 moisture sensitivity eliminates bake requirements, reducing line downtime and handling cost. | Use Scenario: Auxiliary 5/12 V bias supply rectification in PLC I/O modules operating continuously at 70°C ambient. IC Role / Device Role / Timing Role: Primary rectifier sustaining 1 A continuous current at TJ = 125°C with 0.78 V VF (reduced conduction loss at elevated temperature). Use Value: 150 °C max junction temperature and 17 °C/W RθJL enable stable operation without heatsinking in sealed enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fast recovery rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ON Semiconductor MUR110SFT1G | Same 1 A / 100 V rating, but TO-277 package (larger footprint, higher RθJA = 110 °C/W) | Requires PCB layout revision; better suited for higher-power dissipation where thermal mass matters | Select if board-level thermal design accommodates larger outline and higher junction rise |
| Vishay VS-1EWH01-M3/5AT | SOD-123FL package, same 1 A / 100 V, but trr = 25 ns (ultrafast), VF = 1.05 V @ 1 A | Enables >1 MHz operation but increases conduction loss slightly; tighter tolerance on IR (<1 µA) | Select when minimizing reverse recovery charge is critical over forward drop, e.g., resonant LLC secondaries |
Compared with MUR110SFT1G and VS-1EWH01-M3/5AT, the RS1BFL offers optimal balance of low VF, industry-standard SOD-123FL footprint, and proven reliability in cost-sensitive, thermally constrained DC-DC applications - without requiring layout changes or sacrificing surge robustness.
Availability
RS1BFL is available at Aetrix Electronics and suitable for DC-DC converter output rectification, switching mode power supplies, and automated manufacturing assembly requiring stable component supply and J-STD-020 level-1 handling.
Supply support for RS1BFL 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 rectifiers, TVS diodes, MOSFETs, and bipolar transistors.
The RS1BFL belongs to TSC's RSxFL fast recovery rectifier family, engineered specifically for high-efficiency, low-profile SMPS and DC-DC converter applications where thermal performance, automated assembly compatibility, and JEDEC-compliant reliability are essential.
FAQ
What is the maximum junction temperature rating for RS1BFL?
The RS1BFL has a maximum junction temperature (TJ MAX) of 150 °C, enabling reliable operation in enclosed industrial power supplies and automotive auxiliary modules where ambient temperatures reach 70–85 °C. This rating is validated across its full 1 A forward current range and supported by its 17 °C/W junction-to-lead thermal resistance when mounted per JEDEC test conditions.
Does RS1BFL meet RoHS and halogen-free requirements?
Yes, RS1BFL is RoHS compliant and halogen-free per IEC 61249-2-21. Its molding compound, lead finish, and internal construction contain no brominated flame retardants, chlorine, fluorine, iodine, or bromine above threshold limits - satisfying environmental compliance for global electronics markets including EU, Japan, and China.
What is the reverse recovery time (trr) specification for RS1BFL?
The RS1BFL has a typical reverse recovery time (trr) of 150 ns under IF = 0.5 A, IR = 1.0 A, and Irr = 0.25 A test conditions. This value is confirmed in the official Taiwan Semiconductor datasheet Version B2103 and applies specifically to the RS1BFL variant - distinguishing it from higher-voltage members (e.g., RS1JFL–RS1MFL) which specify 250 ns.
Is RS1BFL suitable for lead-free reflow soldering?
Yes, RS1BFL features matte tin-plated leads qualified to J-STD-002 for solderability, supporting standard lead-free reflow profiles with peak temperatures up to 260 °C. Its SOD-123FL package also meets UL 94V-0 flammability rating, ensuring process compatibility and safety compliance in high-volume SMT lines.
What marking code identifies RS1BFL on the device body?
The RS1BFL is marked with "RBF" on its cathode-banded surface, per Taiwan Semiconductor's ordering code convention where "x" in RS1xFL maps directly to voltage grade (A=50 V, B=100 V, D=200 V, etc.). This marking is laser-etched or printed for automated optical inspection and traceability in production environments.
RS1BFL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- SOD-123F
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 100 V
- Current - Average Rectified (Io):
- 1A
- Voltage - Forward (Vf) (Max) @ If:
- 1.05 V @ 1 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 150 ns
- Current - Reverse Leakage @ Vr:
- 5 µA @ 100 V
- Capacitance @ Vr, F:
- 15pF @ 4V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-123F
- Operating Temperature - Junction:
- -55°C ~ 150°C
RS1BFL FAQ
1.How can I place an order for RS1BFL through Aetrix?
Please submit a Request for Quotation (RFQ) for RS1BFL 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 RS1BFL reliable?
The price and inventory of RS1BFL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RS1BFL is usually 5 days.
3.What payment methods are accepted for RS1BFL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RS1BFL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RS1BFL?
RS1BFL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RS1BFL 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 RS1BFL?
For technical support, including RS1BFL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RS1BFL requirements.
6.How does Aetrix verify that RS1BFL is sourced from the original manufacturer or authorized distributors?
All RS1BFL 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 RS1BFL meets industry standards.
7.What is the process for return or replacement of RS1BFL?
All RS1BFL units undergo pre-shipment inspection (PSI). If there is an issue with RS1BFL, 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 RS1BFL part is unused and in its original packaging.
Return procedure for RS1BFL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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