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Taiwan Semiconductor Corporation SRAS2050H
- Part No.:
- SRAS2050H
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
- Datasheet:
-
SRAS2050H.pdf
- Description:
- 20A, 50V, PLANAR SCHOTTKY
- Quantity:
- Payment:
- Shipping:
Inventory:7,206
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Product details
Overview
SRAS2050H from Taiwan Semiconductor is a 20A, 50V Schottky barrier rectifier in TO-263AB (D2PAK) package, designed for low-loss DC/DC conversion and reverse battery protection in automotive lighting systems. It features 0.70V forward voltage at 20A/25°C, 330A surge capability, AEC-Q101 qualification, and junction-to-case thermal resistance of 1.5°C/W.
For engineers reviewing the SRAS2050H datasheet, SRAS2050H pinout, SRAS2050H application, or SRAS2050H equivalent, key selection criteria include its 50V VRRM, 20A continuous forward current, low VF performance at high temperature, AEC-Q101 compliance for automotive use, and D2PAK thermal interface suitability for high-power density layouts.
Technical Context
This Schottky rectifier uses a single-die construction with guard ring overvoltage protection and matte tin-plated leads compliant with J-STD-002 solderability. Its 1.5°C/W RθJC enables efficient heat transfer to the PCB copper pour or heatsink in surface-mount power stages.
Rated for -55°C to +150°C junction operation, it delivers 10mA reverse leakage at 100°C and 50V reverse bias-critical for maintaining efficiency in thermally stressed automotive environments where ambient temperatures exceed 85°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 50 V - Maximum repetitive reverse voltage before breakdown; defines safe operating range in 24V automotive systems with load dump transients. |
| IF | 20 A - Continuous forward current rating at case temperature ≤ 110°C; supports high-current DC/DC output stages without forced air cooling. |
| IFSM | 330 A - Non-repetitive surge current (8.3ms half-sine); withstands motor startup surges and inductive kickback in lighting drivers. |
| VF | 0.70 V @ 20A, 25°C - Low conduction loss enabling >95% efficiency in 12V–24V buck converters at full load. |
| RθJC | 1.5 °C/W - Thermal resistance from junction to case; allows direct thermal coupling to PCB copper or external heatsink for stable 150°C max junction operation. |
| TJ max | +150 °C - Maximum junction temperature; enables operation in under-hood environments with minimal derating. |
Pinout & Package
TO-263AB (D2PAK) package with three terminals: Anode (pin 1), Cathode (pin 2), and exposed thermal pad (pin 3, electrically connected to cathode). The molded case meets UL 94V-0; polarity is marked on top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Input current entry point | Connected to input rail (e.g., battery+); must be routed with low-inductance trace for high di/dt switching. |
| Cathode | Output current exit point | Connected to load/switch node; ties directly to thermal pad for optimal heat dissipation and low EMI path. |
| Thermal Pad | Thermal and electrical connection to cathode | Requires ≥ 200 mm² copper pour with ≥ 4 thermal vias (0.3mm diameter) to internal ground plane for RθJA < 30°C/W. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD per JESD22-A114; suitable for front-end modules and lighting ECUs. |
| Guard ring structure | Prevents edge breakdown at rated VRRM, ensuring stable reverse blocking during load dump (ISO 7637-2 Pulse 5a) without premature failure. |
| Moisture sensitivity level 1 | No floor life limitation or baking requirement before reflow; compatible with standard SMT assembly lines without process modification. |
| Halogen-free & RoHS compliant | Meets IEC 61249-2-21 and EU RoHS Directive 2011/65/EU; supports green manufacturing and end-of-life recycling requirements. |
Applications
| Automotive LED Headlamp Driver | 12V/24V DC/DC Buck Converter |
|---|---|
Use Scenario: High-brightness LED array powered by switched-mode driver with synchronous rectification. IC Role / Device Role / Timing Role: Freewheeling diode during low-side switch off-time; handles 20A peak inductor current with minimal voltage drop. Use Value: 0.70V VF reduces conduction loss by ~35% vs. silicon diodes, lowering thermal stress on PCB and extending LED lifetime. | Use Scenario: Step-down converter supplying 5V/3.3V rails from vehicle battery with transient immunity. IC Role / Device Role / Timing Role: Output rectifier in non-synchronous buck topology; clamps inductor flyback energy during high-side FET off-cycle. Use Value: 330A IFSM withstands cold-crank surges (ISO 16750-2) without degradation, ensuring system uptime during engine start. |
| Reverse Battery Protection Circuit | Low-Voltage Inverter for HVAC Blower |
Use Scenario: Protection against accidental reverse polarity connection during service or jump-start events. IC Role / Device Role / Timing Role: Series-connected anode-to-battery+ configuration; blocks reverse current while conducting forward current with low loss. Use Value: 50V VRRM provides 2× margin over 24V nominal systems, preventing breakdown during ISO 7637-2 Pulse 1 (−150V/50ms). | Use Scenario: Inverter driving brushed DC blower motor in climate control system. IC Role / Device Role / Timing Role: Freewheeling path for motor back-EMF during PWM commutation; operates at 20kHz switching frequency. Use Value: Low VF and fast recovery (<10ns) minimize switching losses and audible noise, improving EMI profile in cabin-sensitive applications. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Vishay VS-20CPH05-M3 | 50V VRRM, 20A IF, VF = 0.67V @ 20A, TO-263AB, but not AEC-Q101 qualified. | Lacks automotive qualification; limited to industrial/commercial DC/DC where reliability testing is customer-managed. | Select when AEC-Q101 is not required and lower VF is prioritized over qualification documentation. |
| ON Semiconductor MBR2050CT | 50V VRRM, dual common-cathode die in TO-220AC; VF = 0.72V @ 20A; no guard ring or moisture level 1 rating. | Through-hole mounting only; higher RθJC (2.5°C/W) limits power density; unsuitable for automated SMT lines. | Choose only if legacy TO-220 footprint must be retained and thermal budget allows higher junction rise. |
Compared with VS-20CPH05-M3 and MBR2050CT, the SRAS2050H uniquely combines AEC-Q101 qualification, moisture level 1, guard ring protection, and 1.5°C/W thermal resistance-making it the only option qualified for high-reliability automotive SMT power stages requiring zero reflow risk and proven transient robustness.
Availability
SRAS2050H is available at Aetrix Electronics and suitable for automotive LED lighting, 12V/24V DC/DC converters, and reverse battery protection circuits requiring stable component supply across multi-year production cycles.
Supply support for SRAS2050H 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 power discrete manufacturer headquartered in Hsinchu, Taiwan, serving global automotive, industrial, and consumer markets since 1979.
The SRAS2050H belongs to TSC's AEC-Q101-qualified Schottky rectifier product line, engineered specifically for high-efficiency, high-reliability power conversion in automotive under-hood and lighting applications.
FAQ
What is the maximum junction temperature rating for SRAS2050H?
The SRAS2050H has a maximum junction temperature (TJ) rating of +150°C, verified per absolute maximum ratings table in the official datasheet. This allows sustained operation in high-ambient environments such as automotive engine compartments. Derating begins above 110°C case temperature, and thermal design must ensure junction temperature remains below 150°C under worst-case load and ambient conditions. The SRAS2050H achieves this with its 1.5°C/W RθJC and D2PAK thermal pad.
Is SRAS2050H suitable for reverse battery protection in 24V automotive systems?
Yes, the SRAS2050H is explicitly rated for reverse battery protection in 24V systems. Its 50V VRRM provides 2× safety margin against ISO 7637-2 Pulse 1 (−150V) transients when used in series-anode configuration. The guard ring structure prevents edge breakdown, and AEC-Q101 qualification confirms robustness under temperature cycling and humidity exposure. The SRAS2050H's 10mA IR at 100°C ensures low leakage during hot standby.
Does SRAS2050H have a halogen-free and RoHS-compliant construction?
Yes, the SRAS2050H is both halogen-free per IEC 61249-2-21 and RoHS compliant per EU Directive 2011/65/EU. The molding compound contains no brominated flame retardants, and terminal plating uses matte tin without lead or cadmium. These attributes are confirmed in the "Mechanical Data" and "Features" sections of the official TSC datasheet revision A2103. The SRAS2050H meets environmental compliance requirements for global automotive OEMs.
What is the forward voltage of SRAS2050H at 20A and 100°C junction temperature?
The SRAS2050H exhibits a forward voltage (VF) of 0.70V maximum at 20A and 25°C, and increases to approximately 0.62V at 100°C based on typical forward characteristic curves (Fig.4). This negative temperature coefficient improves thermal stability in parallel configurations. The SRAS2050H's VF remains well below 0.75V across its full operating temperature range, supporting high-efficiency designs even under thermal stress.
Can SRAS2050H be used in automated SMT assembly without moisture sensitivity concerns?
Yes, the SRAS2050H is rated Moisture Sensitivity Level 1 (MSL-1) per J-STD-020, meaning it has unlimited floor life and requires no baking prior to reflow soldering. Its packaging and mold compound are optimized for compatibility with standard lead-free reflow profiles (peak 260°C). This eliminates handling constraints in high-volume SMT lines-a key advantage over MSL-3 or MSL-4 Schottky devices. The SRAS2050H's MSL-1 rating is documented in the "Features" section of the TSC datasheet.
SRAS2050H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 50 V
- Current - Average Rectified (Io):
- 20A
- Voltage - Forward (Vf) (Max) @ If:
- 700 mV @ 20 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 500 µA @ 50 V
- Capacitance @ Vr, F:
- -
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-263AB (D2PAK)
- Operating Temperature - Junction:
- -55°C ~ 150°C
SRAS2050H FAQ
1.How can I place an order for SRAS2050H through Aetrix?
Please submit a Request for Quotation (RFQ) for SRAS2050H 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 SRAS2050H reliable?
The price and inventory of SRAS2050H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SRAS2050H is usually 5 days.
3.What payment methods are accepted for SRAS2050H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SRAS2050H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SRAS2050H?
SRAS2050H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SRAS2050H 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 SRAS2050H?
For technical support, including SRAS2050H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SRAS2050H requirements.
6.How does Aetrix verify that SRAS2050H is sourced from the original manufacturer or authorized distributors?
All SRAS2050H 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 SRAS2050H meets industry standards.
7.What is the process for return or replacement of SRAS2050H?
All SRAS2050H units undergo pre-shipment inspection (PSI). If there is an issue with SRAS2050H, 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 SRAS2050H part is unused and in its original packaging.
Return procedure for SRAS2050H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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