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Taiwan Semiconductor Corporation RS2DFSH
- Part No.:
- RS2DFSH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- SOD-128
- Datasheet:
-
RS2DFSH.pdf
- Description:
- 150NS, 2A, 200V, FAST RECOVERY R
- Quantity:
- Payment:
- Shipping:
Inventory:28,000
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Product details
Overview
RS2DFSH from Taiwan Semiconductor is a 2 A, 200 V fast recovery surface-mount rectifier in SOD-128 package, featuring 150 ns reverse recovery time, 1.01 V forward voltage at 2 A/25°C, and AEC-Q101 qualification for automotive-grade reliability. It serves as a freewheeling or snubber diode in DC/DC converters where low conduction loss and fast switching are critical.
For engineers reviewing the RS2DFSH datasheet, RS2DFSH pinout, RS2DFSH application, or RS2DFSH equivalent, key selection criteria include its 200 V VRRM, 50 A IFSM, 175 °C TJMAX, glass-passivated junction, and SOD-128 thermal performance (RθJL = 16 °C/W).
Technical Context
This device is a single-die, unidirectional silicon rectifier optimized for high-efficiency power conversion. Its fast recovery (trr ≤ 150 ns) and low forward voltage (VF = 1.01 V @ 2 A, 25°C) reduce switching and conduction losses in medium-frequency SMPS topologies.
The SOD-128 package provides enhanced thermal dissipation over standard SOD-123, with RθJA = 73 °C/W on a 5 mm × 5 mm Cu pad and moisture sensitivity level 1 per J-STD-020 - enabling robust reflow compatibility and automotive under-hood suitability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 200 V - Maximum repetitive reverse voltage before breakdown; defines safe operating range in clamping/freewheeling circuits |
| IF | 2 A continuous - Rated average forward current; supports sustained load handling in 24 V automotive DC/DC stages |
| IFSM | 50 A (8.3 ms) - Surge capability for transient overload protection without failure |
| trr | 150 ns - Fast reverse recovery minimizes switching loss and EMI in 100–500 kHz converters |
| VF | 1.01 V @ 2 A, 25°C - Low conduction loss improves efficiency; drops to 0.88 V @ 2 A, 125°C for stable high-temp operation |
| RθJL | 16 °C/W - Low junction-to-lead thermal resistance enables direct PCB copper pad heat sinking |
| CJ | 11 pF @ 1 MHz, 4 V - Low junction capacitance reduces capacitive turn-on loss and noise coupling |
Pinout & Package
SOD-128 is a low-profile, surface-mount plastic package with molded body per JEDEC DO-221AD, matte tin-plated leads, cathode band polarity marking, and 0.027 g mass. Designed for automated placement and reflow soldering (MSL Level 1).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry | Connected to lower-potential node (e.g., switch node in buck converter); accepts up to 2 A continuous |
| Cathode | Forward current exit / reverse blocking terminal | Marked by band; withstands 200 V reverse bias; routes current to output rail or snubber network |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units and ADAS power supplies |
| Glass passivated junction | Enhanced humidity resistance and long-term reliability under thermal cycling and high-voltage stress |
| Low profile SOD-128 | Height ≤ 1.2 mm enables compact layout in space-constrained modules like ECU power stages |
| Fast recovery (150 ns) | Reduces reverse recovery charge (Qrr) and associated switching loss vs. standard rectifiers |
| RoHS & halogen-free | Complies with EU environmental directives and automotive material restrictions (e.g., ELV, IMDS) |
Applications
| Freewheeling Diode in Buck Converters | Snubber Network in Flyback Controllers |
|---|---|
Use Scenario: Placed across the low-side MOSFET in a 24 V input buck regulator delivering 5 V/2 A to microcontroller subsystems. IC Role / Device Role / Timing Role: Freewheeling path during MOSFET off-time; conducts inductive current until energy dissipates. Use Value: 150 ns trr and 1.01 V VF minimize voltage overshoot and conduction loss, improving efficiency by ~1.2% over slower 1N5822-class diodes. | Use Scenario: Integrated into an RCD snubber across the primary winding of a 65 kHz flyback transformer in an automotive infotainment power supply. IC Role / Device Role / Timing Role: Clamps voltage spikes during MOSFET turn-off; recovers rapidly to reset before next switching cycle. Use Value: Low Qrr and 11 pF CJ reduce snubber power dissipation and improve transient response versus generic 1N4937 alternatives. |
| DC/DC Converter Output Rectification | Automotive Body Control Module (BCM) Power Stage |
Use Scenario: Used as secondary-side rectifier in isolated 12 V → 3.3 V DC/DC module powering CAN transceivers and sensors. IC Role / Device Role / Timing Role: Unidirectional current steering during transformer secondary half-cycle; blocks reverse voltage during opposite half-cycle. Use Value: 200 V VRRM provides margin against reflected transients; 175 °C TJMAX ensures operation in sealed BCM enclosures. | Use Scenario: Mounted on PCB with 5 mm × 5 mm Cu pad in BCM power distribution board handling 12 V battery input and multiple switched loads. IC Role / Device Role / Timing Role: Reverse polarity protection and load dump surge suppression component. Use Value: AEC-Q101 qualification and MSL Level 1 enable direct use in production automotive PCBs without derating or special handling. |
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 | 2 A, 200 V, trr = 35 ns, VF = 0.95 V @ 2 A, 25°C; TO-220AC package | Higher thermal mass but larger footprint; requires heatsink above ~1.2 A continuous | Preferred where ultra-fast recovery (< 50 ns) and higher surge rating (80 A) are required, but SOD-128 footprint is not mandatory |
| ES2D | 2 A, 200 V, trr = 35 ns, VF = 0.92 V @ 2 A, 25°C; SMA package (smaller than SOD-128, RθJA = 90 °C/W) | Lower thermal performance limits continuous current in high-ambient environments | Selected when board space is extremely constrained and peak ambient temperature remains < 70°C |
Compared with STTH2R02 and ES2D, RS2DFSH delivers balanced performance: faster recovery than ES2D's SMA variant while maintaining SOD-128's superior thermal interface (RθJL = 16 °C/W), and smaller footprint than STTH2R02's through-hole TO-220AC - making it optimal for automotive SMT power stages requiring AEC-Q101 compliance.
Availability
RS2DFSH is available at Aetrix Electronics and suitable for automotive body control modules, industrial DC/DC converters, and consumer power adapters requiring stable component supply, AEC-Q101 qualification, and SOD-128 thermal performance.
Supply support for RS2DFSH 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 power rectifiers, TVS diodes, and MOSFETs for industrial and automotive markets.
The RS2DFSH belongs to TSC's RS2xFSH fast recovery rectifier family, designed specifically for high-reliability, surface-mount power conversion in automotive and industrial environments where AEC-Q101 compliance, thermal robustness, and fast switching are mandatory.
FAQ
What is the maximum junction temperature rating for RS2DFSH?
The RS2DFSH has a maximum junction temperature (TJMAX) of +175 °C, verified per absolute maximum ratings in the official Taiwan Semiconductor datasheet. This rating allows reliable operation in under-hood automotive environments and sealed industrial enclosures. The RS2DFSH maintains specified electrical performance up to this temperature, with forward voltage decreasing to 0.88 V at 2 A and 125 °C. Thermal design must ensure junction temperature stays within this limit using the provided RθJL = 16 °C/W and RθJA = 73 °C/W values.
Is RS2DFSH AEC-Q101 qualified and what does that mean for my design?
Yes, RS2DFSH is explicitly AEC-Q101 qualified per the Taiwan Semiconductor datasheet. This means it has passed stress tests including high-temperature reverse bias, temperature cycling, and mechanical shock - validating suitability for automotive electronic systems such as body control modules and infotainment power supplies. Using RS2DFSH eliminates need for additional qualification testing in your AEC-compliant design, provided layout follows recommended SOD-128 pad dimensions and thermal relief guidelines specified in the datasheet.
What is the reverse recovery time (trr) of RS2DFSH and how is it measured?
The RS2DFSH has a reverse recovery time (trr) of ≤ 150 ns, measured under conditions of IF = 0.5 A, IR = 1.0 A, and Irr = 0.25 A, per the Taiwan Semiconductor datasheet. This value reflects the time required for minority carriers to clear after forward conduction, directly impacting switching loss and EMI in high-frequency converters. The 150 ns trr enables efficient operation up to ~500 kHz in hard-switched topologies, confirmed by typical characteristics curves showing stable behavior across temperature.
Does RS2DFSH have a defined moisture sensitivity level (MSL) and what reflow profile should I use?
Yes, RS2DFSH has Moisture Sensitivity Level 1 per J-STD-020, meaning it can be stored indefinitely at ≤ 30 °C/85 % RH without baking prior to reflow. The recommended reflow profile follows IPC/JEDEC J-STD-020: peak temperature 260 °C, time above 217 °C ≤ 60 seconds, ramp-up rate ≤ 3 °C/s. The SOD-128 package uses matte tin-plated leads compliant with J-STD-002, ensuring reliable solder wetting. No pre-bake is required unless exposed to ambient > 30 °C/60 % RH for > 168 hours.
What is the marking code on the RS2DFSH device body?
The RS2DFSH is marked "RS2DFH" on its package body, per the Taiwan Semiconductor ordering information table and marking diagram. This 6-character code appears adjacent to the cathode band and date code (YW) on the SOD-128 case. The "x" in RS2xFSH denotes voltage grade - "D" corresponds to 200 V - and is reflected in the actual top-side marking as RS2DFH, not RS2DFSH. This marking aligns with JEDEC DO-221AD standards and enables visual verification during incoming inspection.
RS2DFSH Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- SOD-128
- 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:
- 1 µA @ 200 V
- Capacitance @ Vr, F:
- 11pF @ 4V, 1MHz
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-128
- Operating Temperature - Junction:
- -55°C ~ 150°C
RS2DFSH FAQ
1.How can I place an order for RS2DFSH through Aetrix?
Please submit a Request for Quotation (RFQ) for RS2DFSH 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 RS2DFSH reliable?
The price and inventory of RS2DFSH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RS2DFSH is usually 5 days.
3.What payment methods are accepted for RS2DFSH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RS2DFSH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RS2DFSH?
RS2DFSH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RS2DFSH 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 RS2DFSH?
For technical support, including RS2DFSH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RS2DFSH requirements.
6.How does Aetrix verify that RS2DFSH is sourced from the original manufacturer or authorized distributors?
All RS2DFSH 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 RS2DFSH meets industry standards.
7.What is the process for return or replacement of RS2DFSH?
All RS2DFSH units undergo pre-shipment inspection (PSI). If there is an issue with RS2DFSH, 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 RS2DFSH part is unused and in its original packaging.
Return procedure for RS2DFSH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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