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Taiwan Semiconductor Corporation RSFDL
- Part No.:
- RSFDL
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-219AB
- Datasheet:
-
RSFDL.pdf
- Description:
- DIODE GP 200V 500MA SUB SMA
- Quantity:
- Payment:
- Shipping:
Inventory:10,788
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Product details
Overview
RSFDL from Taiwan Semiconductor is a 0.5A, 200V fast recovery surface-mount rectifier in Sub SMA package, featuring 150 ns reverse recovery time, 1.3 V max forward voltage at 0.5A, and 10 A peak surge current - used in DC-DC converters and switching inverters for high-efficiency power conversion.
For engineers reviewing the RSFDL datasheet, RSFDL pinout, RSFDL application, or RSFDL equivalent, key selection criteria include repetitive peak reverse voltage (200 V), thermal resistance (RθJA = 150 °C/W), junction temperature range (–55 to +150 °C), and moisture sensitivity level (J-STD-020 Level 1).
Technical Context
The RSFDL 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, and its Sub SMA package supports automated placement with matte tin-plated leads compliant with J-STD-002 solderability.
With 4 pF typical junction capacitance at 1 MHz and 4.0 V reverse bias, RSFDL enables low-noise switching behavior. Reverse recovery time is specified at 150 ns under IF = 0.5 A, IR = 1.0 A, and Irr = 0.25 A conditions - critical for minimizing switching losses in SMPS topologies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 200 V - maximum repetitive reverse blocking voltage; defines safe operating limit in bridge or flyback snubber circuits |
| IF | 0.5 A continuous - average forward current rating at 75 °C ambient; determines steady-state power dissipation capability |
| trr | 150 ns - measured under IF = 0.5 A, IR = 1.0 A, Irr = 0.25 A; directly impacts switching loss and EMI in >100 kHz converters |
| VF max | 1.3 V at IF = 0.5 A, TJ = 25 °C - forward conduction loss contributor; affects efficiency in low-voltage output stages |
| RθJA | 150 °C/W - junction-to-ambient thermal resistance; requires ≥25 mm² copper pad for full 0.5 A rating in still air |
| IFSM | 10 A - non-repetitive surge current (8.3 ms half-sine); supports inrush current handling in AC-input rectification |
| CJ | 4 pF at 1 MHz, VR = 4.0 V - low junction capacitance reduces capacitive coupling noise in high-dv/dt environments |
Pinout & Package
Package: Sub SMA - surface-mount, molded plastic case meeting UL 94V-0; cathode indicated by band; matte tin-plated leads; weight ≈ 0.019 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential side of input source; must withstand surge current and thermal cycling |
| Cathode | Forward current exit / reverse blocking terminal | Marked with band; connects to output rail or switching node; carries full reverse voltage during off-state |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Enables stable leakage performance across –55 to +150 °C and improves long-term reliability in humid environments |
| Fast recovery (150 ns) | Reduces reverse recovery charge (Qrr) and associated switching losses in 100–500 kHz SMPS designs |
| Sub SMA package | Supports high-density PCB layouts and automated pick-and-place; footprint compatible with industry-standard SMA variants |
| J-STD-020 Level 1 MSL | Allows unlimited floor life without dry pack or baking - simplifies manufacturing logistics and reduces assembly cost |
| Halogen-free (IEC 61249-2-21) | Meets environmental compliance requirements for RoHS-compliant industrial and consumer end equipment |
Applications
| DC-DC Converter | Switching Inverter |
|---|---|
Use Scenario: Secondary-side rectification in isolated 12 V to 3.3 V/5 V buck-derived converters. IC Role / Device Role / Timing Role: Fast recovery rectifier replacing Schottky diodes where higher VRRM and lower leakage are required. Use Value: 200 V VRRM and 5 µA max reverse leakage at 25 °C enable reliable operation with margin in 12 V input systems. | Use Scenario: Freewheeling path in half-bridge motor drive inverters operating at 20–100 kHz. IC Role / Device Role / Timing Role: Low-Qrr freewheeling diode paired with MOSFETs to minimize shoot-through risk and switching loss. Use Value: 150 ns trr and 4 pF CJ reduce voltage overshoot and EMI generation during commutation. |
| AC-DC Adapter | Industrial Power Supply |
Use Scenario: Output rectification in universal-input (90–264 VAC) 15 W adapters with active clamp flyback. IC Role / Device Role / Timing Role: High-reliability secondary-side rectifier with robust surge handling for line transients. Use Value: 10 A IFSM and 150 °C TJMAX support sustained operation under overload and thermal stress. | Use Scenario: Auxiliary supply rectification in programmable logic controller (PLC) power modules. IC Role / Device Role / Timing Role: General-purpose fast recovery diode for low-power auxiliary rails (±15 V, 5 V) requiring long-term stability. Use Value: Glass passivation and JESD201 Class 2 whisker resistance ensure field reliability over 10+ year service life. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fast recovery rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH1R02 | VRRM = 200 V, trr = 35 ns, IF = 1.0 A, DO-214AA package | Higher current rating and faster recovery, but larger footprint and higher cost | Preferred when higher surge margin or tighter trr tolerance is required; not drop-in due to different package |
| ES1D | VRRM = 200 V, trr = 35 ns, IF = 1.0 A, SMA package (not Sub SMA) | Slightly larger body and longer leads; RθJA = 125 °C/W vs. RSFDL's 150 °C/W | Acceptable for space-constrained boards where thermal margin allows; requires pad layout verification |
Compared with STTH1R02 and ES1D, RSFDL offers tighter thermal management compatibility with Sub SMA-reflow profiles and lower moisture sensitivity (Level 1 vs. Level 2b), making it preferable for high-volume automated assembly where floor-life control is critical.
Availability
RSFDL 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 J-STD-020 Level 1 handling.
Supply support for RSFDL 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 RSF-series fast recovery rectifiers are designed specifically for high-frequency switching power conversion, emphasizing thermal robustness, automated manufacturability, and compliance with environmental standards including RoHS and halogen-free requirements.
FAQ
What is the maximum junction temperature rating for RSFDL?
The RSFDL has a maximum junction temperature (TJ) rating of +150 °C, with operational range from –55 °C to +150 °C. This rating is validated under specified thermal conditions and supports use in thermally demanding environments such as enclosed industrial power supplies. Derating curves in the RSFDL datasheet define allowable forward current versus ambient temperature and PCB copper area.
Does RSFDL have a defined pinout or polarity marking?
Yes, RSFDL uses standard Sub SMA polarity: the cathode is marked by a visible band on the device body. The anode is the unmarked lead. This marking aligns with JEDEC MO-213 and ensures correct orientation during automated placement. No internal pin numbering applies - RSFDL is a two-terminal discrete diode with unidirectional conduction.
Is RSFDL suitable for use in automotive applications?
RSFDL is not qualified to AEC-Q101 or automotive-grade reliability standards. While its electrical and thermal specs meet many functional requirements, Taiwan Semiconductor explicitly states that RSF-series devices are not designed for medical, life-saving, or life-sustaining applications - and no automotive qualification data is published for RSFDL. For automotive use, consult TSC's AEC-Q101-certified rectifier portfolio.
What is the reverse recovery time test condition for RSFDL?
The reverse recovery time (trr) for RSFDL is measured under IF = 0.5 A, IR = 1.0 A, and Irr = 0.25 A, per the manufacturer's test circuit in Figure 6 of the RSFDL datasheet. This condition reflects realistic switching behavior in medium-frequency DC-DC converters and is distinct from conditions used for RSFJL (250 ns) or RSFKL (500 ns) variants.
How does RSFDL differ from RSFAL in terms of electrical specifications?
RSFDL and RSFAL share identical package, thermal specs, and forward characteristics, but differ in VRRM: RSFAL is rated for 50 V while RSFDL is rated for 200 V. Their reverse recovery times also differ - RSFAL is unspecified in the provided documentation, whereas RSFDL is specified at 150 ns. Both are part of the same RSF-series family and use identical Sub SMA packaging and marking conventions.
RSFDL 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):
- 200 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 @ 200 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
RSFDL FAQ
1.How can I place an order for RSFDL through Aetrix?
Please submit a Request for Quotation (RFQ) for RSFDL 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 RSFDL reliable?
The price and inventory of RSFDL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RSFDL is usually 5 days.
3.What payment methods are accepted for RSFDL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RSFDL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RSFDL?
RSFDL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RSFDL 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 RSFDL?
For technical support, including RSFDL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RSFDL requirements.
6.How does Aetrix verify that RSFDL is sourced from the original manufacturer or authorized distributors?
All RSFDL 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 RSFDL meets industry standards.
7.What is the process for return or replacement of RSFDL?
All RSFDL units undergo pre-shipment inspection (PSI). If there is an issue with RSFDL, 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 RSFDL part is unused and in its original packaging.
Return procedure for RSFDL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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