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Taiwan Semiconductor Corporation SRAS20150H
- Part No.:
- SRAS20150H
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
- Datasheet:
-
SRAS20150H.pdf
- Description:
- DIODE SCHOTTKY 150V 20A TO263AB
- Quantity:
- Payment:
- Shipping:
Inventory:9,801
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Product details
Overview
SRAS20150H from Taiwan Semiconductor is a 20A, 150V Schottky barrier rectifier in TO-263AB (D2PAK) package, optimized for low forward voltage drop (1.02 V at 20 A, 25°C) and high surge capability (330 A, 8.3 ms), used in automotive DC/DC converters and reverse battery protection circuits.
For engineers reviewing the SRAS20150H datasheet, SRAS20150H pinout, SRAS20150H application, or SRAS20150H equivalent, key selection criteria include its AEC-Q101 qualification, 1.5°C/W junction-to-case thermal resistance, 100 µA max reverse leakage at 150 V and 25°C, and suitability for high-frequency freewheeling in 12 V/24 V automotive systems.
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 150 V repetitive peak reverse voltage (VRRM) and 105 V RMS reverse rating enable use in higher-voltage automotive subsystems where silicon diodes would incur excessive conduction loss.
Thermally, it delivers 1.5°C/W RθJC, supporting sustained 20 A operation with proper heatsinking; its -55°C to +150°C junction temperature range and moisture sensitivity level 1 rating confirm suitability for reflow-soldered automotive PCB assembly.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 150 V - Maximum non-repetitive reverse blocking voltage; defines safe operating limit in battery-reversal or load-dump transient conditions |
| IF | 20 A - Continuous average forward current at case temperature ≤ 110°C; supports high-current DC/DC output stages |
| IFSM | 330 A - Peak non-repetitive surge current (8.3 ms half-sine); withstands motor startup or solenoid turn-off transients |
| VF | 1.02 V - Forward voltage at 20 A, 25°C; enables >92% efficiency in 12 V–48 V buck converters at full load |
| IR | 100 µA - Max reverse leakage at 150 V, 25°C; ensures low standby power loss in always-on vehicle modules |
| RθJC | 1.5 °C/W - Junction-to-case thermal resistance; allows direct mounting to copper pour or heatsink for thermal management |
| TJ max | +150 °C - Maximum junction temperature; supports under-hood deployment with derating per Fig.1 |
Pinout & Package
Package: TO-263AB (D2PAK), surface-mount, 3-terminal configuration with anode, cathode, and exposed drain tab (cathode-connected thermal pad).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Lead 1) | Input terminal for forward conduction | Connected to input rail (e.g., battery+ or switch-node); polarity-marked on top surface |
| Cathode (Lead 2) | Output terminal for forward conduction | Connected to output/load; electrically tied to exposed metal tab for thermal and electrical conduction |
| Exposed Tab | Cathode terminal & thermal path | Must be soldered to ≥100 mm² copper area for thermal performance; not isolated - requires cathode-referenced layout |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per stress test plan |
| Guard ring structure | Enhances edge termination robustness against localized overvoltage breakdown during transients |
| Moisture sensitivity level 1 | Zero bake requirement before reflow; compatible with standard SMT assembly without dry-pack handling |
| Halogen-free & RoHS compliant | Meets IEC 61249-2-21 and EU RoHS Directive 2011/65/EU for green electronics manufacturing |
| High surge current capability | 330 A IFSM enables use without external TVS in many 12 V/24 V automotive power paths |
Applications
| Low-Voltage DC/DC Converters | Reverse Battery Protection |
|---|---|
Use Scenario: 12 V to 5 V/3.3 V buck converter in automotive body control module (BCM). IC Role / Device Role / Timing Role: Freewheeling diode in synchronous or asynchronous topology, conducting during low-side switch off-time. Use Value: 1.02 V VF minimizes conduction loss at 20 A peak, improving converter efficiency by ~3% vs. comparable Si diodes. | Use Scenario: Protection circuit between vehicle battery and infotainment head unit. IC Role / Device Role / Timing Role: Series-connected cathode-to-load, blocking reverse current during accidental battery reversal. Use Value: 150 V VRRM withstands double-battery jump-start scenarios (24 V + transients), while low VF limits insertion loss to <0.5 W at 10 A. |
| Automotive Lighting Drivers | High-Frequency Inverters |
Use Scenario: LED driver for adaptive front-lighting system (AFS) with PWM dimming up to 20 kHz. IC Role / Device Role / Timing Role: Output rectifier in boost or SEPIC stage, handling fast-switching ripple current. Use Value: Low junction capacitance and absence of reverse recovery charge prevent switching losses and EMI generation above 100 kHz. | Use Scenario: Auxiliary power inverter for HVAC blower motor control (24 V input, 100–200 kHz switching). IC Role / Device Role / Timing Role: Output rectifier in full-bridge or LLC secondary side, conducting high-frequency AC-derived DC. Use Value: 330 A IFSM and 1.5°C/W RθJC support burst-mode operation with peak currents exceeding 25 A without thermal runaway. |
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-20CPH15-M3 | Same 150 V VRRM, 20 A IF, but TO-220AC package; RθJC = 2.5°C/W; VF = 1.05 V @ 20 A | Requires through-hole mounting and larger heatsink; less suitable for dense automotive PCBs | Prefer SRAS20150H for SMT volume production and thermal-limited layouts |
| ON Semiconductor SB20150E | 150 V, 20 A, TO-263AB; VF = 1.07 V @ 20 A; AEC-Q101 qualified; RθJC = 1.6°C/W | Nearly identical footprint and qualification; slightly higher VF increases conduction loss by ~50 mW at 20 A | SRAS20150H offers lower VF and marginally better thermal resistance for thermally constrained designs |
Compared with VS-20CPH15-M3 and SB20150E, the SRAS20150H provides the lowest forward voltage (1.02 V) and best thermal resistance (1.5°C/W) in the TO-263AB form factor, making it optimal for space-constrained, high-efficiency automotive power rails where thermal headroom is limited.
Availability
SRAS20150H is available at Aetrix Electronics and suitable for automotive DC/DC converters, reverse battery protection circuits, and high-frequency inverters requiring stable component supply across extended temperature and lifecycle requirements.
Supply support for SRAS20150H 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 Company (TSC) is a vertically integrated analog and discrete semiconductor manufacturer headquartered in Hsinchu, Taiwan, serving automotive, industrial, and consumer markets since 1979.
The SRAS20150H belongs to TSC's AEC-Q101-qualified Schottky rectifier product line, engineered specifically for high-current, high-reliability automotive power conversion where low VF, robust surge handling, and thermal performance are critical.
FAQ
What is the maximum junction temperature rating for the SRAS20150H?
The SRAS20150H has a maximum junction temperature (TJ) of +150°C, validated across its full operating range from -55°C to +150°C. This rating supports under-hood automotive deployment when mounted on adequate copper area per the thermal derating curve in Figure 1. The device must be operated within this limit to maintain reliability and AEC-Q101 compliance.
Is the SRAS20150H pin-compatible with other parts in the SRAS20xxH series?
Yes, all SRAS20xxH devices-including SRAS20150H-share identical TO-263AB (D2PAK) packaging, pinout, and mechanical dimensions. They differ only in VRRM (20 V to 150 V) and related electrical parameters like VF and IR, enabling design reuse across voltage variants without PCB changes.
Does the SRAS20150H require special handling due to moisture sensitivity?
No. The SRAS20150H is rated at Moisture Sensitivity Level 1 per J-STD-020, meaning it can be stored indefinitely at ambient conditions and placed directly into standard reflow profiles without baking or dry-pack requirements-ideal for high-volume automotive SMT lines.
What is the reverse leakage current specification for the SRAS20150H at elevated temperature?
At 150 V reverse bias and 125°C junction temperature, the SRAS20150H exhibits ≤5 mA typical reverse leakage current (IR). This value is confirmed in the Electrical Specifications table and supports reliable operation in hot under-hood environments where thermal runaway must be avoided.
How does the guard ring feature improve reliability in the SRAS20150H?
The guard ring in the SRAS20150H enhances edge termination robustness, preventing premature avalanche breakdown at the die periphery during voltage transients such as load dump or ISO 7637-2 pulses. This structural feature contributes directly to its AEC-Q101 qualification and long-term reliability in automotive power systems.
SRAS20150H 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):
- 150 V
- Current - Average Rectified (Io):
- 20A
- Voltage - Forward (Vf) (Max) @ If:
- 1.02 V @ 20 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 100 µA @ 150 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
SRAS20150H FAQ
1.How can I place an order for SRAS20150H through Aetrix?
Please submit a Request for Quotation (RFQ) for SRAS20150H 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 SRAS20150H reliable?
The price and inventory of SRAS20150H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SRAS20150H is usually 5 days.
3.What payment methods are accepted for SRAS20150H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SRAS20150H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SRAS20150H?
SRAS20150H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SRAS20150H 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 SRAS20150H?
For technical support, including SRAS20150H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SRAS20150H requirements.
6.How does Aetrix verify that SRAS20150H is sourced from the original manufacturer or authorized distributors?
All SRAS20150H 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 SRAS20150H meets industry standards.
7.What is the process for return or replacement of SRAS20150H?
All SRAS20150H units undergo pre-shipment inspection (PSI). If there is an issue with SRAS20150H, 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 SRAS20150H part is unused and in its original packaging.
Return procedure for SRAS20150H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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