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Taiwan Semiconductor Corporation SRT15HA1G
- Part No.:
- SRT15HA1G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- T-18, Axial
- Datasheet:
-
SRT15HA1G.pdf
- Description:
- DIODE SCHOTTKY 50V 1A TS-1
- Quantity:
- Payment:
- Shipping:
Inventory:9,011
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Product details
Overview
SRT15HA1G from Taiwan Semiconductor is a 1 A, 50 V AEC-Q101-qualified Schottky barrier rectifier in TS-1 package, featuring low forward voltage (0.70 V @ 1 A, 25°C), high surge capability (25 A), and junction temperature rating up to +150°C. It serves as primary output rectifier in automotive-grade DC-DC converters and industrial SMPS where efficiency and reliability under thermal stress are critical.
For engineers reviewing the SRT15HA1G datasheet, SRT15HA1G pinout, SRT15HA1G application, or SRT15HA1G equivalent, key selection factors include its AEC-Q101 qualification, 50 V VRRM, 0.70 V forward drop at rated current, 80 pF junction capacitance, and TS-1 package compatibility with high-density board layouts.
Technical Context
This Schottky rectifier uses a single-die construction with guard ring structure for enhanced overvoltage robustness and meets JESD201 Class 2 whisker resistance. Its thermal resistance RθJA is 50°C/W, enabling operation up to 150°C junction temperature when properly mounted on PCB copper area.
The device exhibits low reverse leakage-max 500 µA at 25°C and 5 mA at 100°C under rated 50 V reverse bias-and supports high-frequency switching due to 80 pF capacitance at 1 MHz/4 V, making it suitable for 100–500 kHz power stages.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 50 V - Maximum repetitive reverse voltage; defines safe blocking range in DC-DC secondary-side rectification |
| IF | 1 A - Continuous forward current rating; determines minimum trace width and thermal pad design |
| IFSM | 25 A - Non-repetitive surge current (8.3 ms half-sine); withstands inrush and transient overload events |
| VF | 0.70 V @ 1 A, 25°C - Low conduction loss directly improves system efficiency by reducing I²R heating |
| CJ | 80 pF @ 1 MHz, 4 V - Enables stable operation in high-frequency switchers without excessive ringing or EMI |
| TJ max | +150°C - Extended junction temperature rating supports under-hood automotive and high-ambient industrial use |
| AEC-Q101 | Qualified - Validated for automotive electronics per stress test requirements including HTGB, HTRB, and TCT |
Pinout & Package
TS-1 package: surface-mount, 2-terminal, cathode-indicated by band; lead-free pure tin plating compliant with J-STD-002 solderability; UL 94V-0 molding compound; weight ≈ 0.200 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Input current entry point | Connected to transformer secondary or switching node; requires thermal relief and current-carrying trace design |
| Cathode | Output current exit point | Connected to output capacitor and load; polarity marked by visible band; must avoid reverse bias exceeding 50 V |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive power modules requiring long-term reliability under thermal cycling and humidity exposure |
| Guard ring structure | Prevents premature edge breakdown during voltage transients, improving ruggedness in unregulated input conditions |
| Low VF (0.70 V) | Reduces conduction loss by ~30% vs. comparable 1 A Si diodes, lowering thermal design burden in sealed enclosures |
| High IFSM (25 A) | Supports peak-load designs without external surge limiting, simplifying protection circuitry in adapter applications |
| Halogen-free & RoHS | Complies with IEC 61249-2-21 and EU RoHS Directive for environmentally regulated end equipment |
Applications
| Automotive DC-DC Converter | Industrial SMPS Secondary Rectifier |
|---|---|
Use Scenario: 12 V to 5 V/3.3 V buck converter in engine control unit (ECU) with wide ambient temperature range (-40°C to +125°C). IC Role / Device Role / Timing Role: Output synchronous rectifier replacing MOSFET drive complexity; conducts during low-side switch conduction phase. Use Value: AEC-Q101 qualification and +150°C TJ rating ensure functional safety compliance and extended lifetime under hood thermal stress. | Use Scenario: 48 V to 12 V isolated flyback supply in factory automation PLC power module. IC Role / Device Role / Timing Role: Primary output rectifier handling continuous 1 A load with 25 A surge tolerance during motor startup surges. Use Value: 0.70 V VF reduces average power loss to 0.7 W, minimizing heatsink requirement in space-constrained DIN-rail enclosures. |
| USB-C PD Adapter Output Stage | Telecom DC-DC Brick Auxiliary Rail |
Use Scenario: 20 V output stage of 65 W USB-C power adapter operating at 250 kHz switching frequency. IC Role / Device Role / Timing Role: High-frequency rectifier in synchronous or quasi-resonant topology; operates in discontinuous conduction mode. Use Value: 80 pF junction capacitance limits displacement current and EMI generation, easing EMC filter design and certification. | Use Scenario: +3.3 V auxiliary rail generation in 48 V telecom brick powering baseband processor and memory. IC Role / Device Role / Timing Role: Low-loss rectifier in post-regulator stage where efficiency and thermal margin are critical for 24/7 operation. Use Value: 50°C/W RθJA enables >95% efficiency at full load without forced air, supporting fanless telecom chassis design. |
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-1EWH05-M3/5AT | Same TS-1 package, 1 A/50 V, but VF = 0.55 V (typ) at 25°C; no AEC-Q101 qualification | Preferred for cost-sensitive consumer adapters; not suitable for automotive qualified designs | Select only if AEC-Q101 is not required and lower VF justifies sourcing from alternate vendor |
| ON Semiconductor SB150 | DO-41 package, 1 A/50 V, VF = 0.72 V (max), no AEC-Q101; higher RθJA (~75°C/W) | Legacy through-hole replacement; unsuitable for high-density SMT layouts or automotive thermal profiles | Use only for manual repair or legacy board rework where TS-1 footprint is unavailable |
Compared with VS-1EWH05-M3/5AT and SB150, the SRT15HA1G uniquely combines AEC-Q101 qualification, TS-1 surface-mount compatibility, and optimized 0.70 V forward drop-making it the only choice for new automotive and high-reliability industrial designs requiring both qualification and thermal performance.
Availability
SRT15HA1G is available at Aetrix Electronics and suitable for automotive power modules, industrial SMPS, and USB-C PD adapters requiring stable component supply with AEC-Q101 assurance and consistent TS-1 packaging.
Supply support for SRT15HA1G 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 automotive, industrial, and computing markets since 1979.
The SRT15HA1G belongs to TSC's AEC-Q101-qualified Schottky rectifier product line, engineered specifically for high-efficiency, high-reliability secondary-side rectification in automotive and industrial power conversion systems.
FAQ
What is the maximum junction temperature rating for SRT15HA1G?
The SRT15HA1G has a maximum junction temperature (TJ) rating of +150°C, verified per AEC-Q101 stress testing. This allows reliable operation in under-hood automotive environments and high-ambient industrial settings where thermal margins are constrained. The SRT15HA1G must be mounted on adequate copper area to maintain this rating under full 1 A load.
Is SRT15HA1G pin-compatible with other SRT1x devices in the same family?
Yes, all SRT1x devices-including SRT15HA1G-share identical TS-1 package dimensions, pin assignment (anode/cathode), and mounting footprint. Voltage variants (e.g., SRT12HA1G to SRT115HA1G) differ only in VRRM and related electrical parameters, not mechanical layout. The SRT15HA1G can be substituted within the same TS-1 land pattern across the family.
Does SRT15HA1G require a heatsink in typical 1 A operation?
No external heatsink is required for SRT15HA1G at 1 A continuous current if mounted on ≥1 cm² of 2 oz copper with thermal vias. Its RθJA of 50°C/W and 0.70 V forward drop result in ~0.7 W dissipation, yielding ~35°C rise above ambient. The SRT15HA1G is designed for direct PCB thermal management in space-constrained applications.
What does the "H" suffix in SRT15HA1G signify?
Per TSC's ordering nomenclature, the "H" in SRT15HA1G indicates AEC-Q101 qualification. This means the SRT15HA1G has undergone full stress testing-including high-temperature reverse bias (HTRB), high-temperature gate bias (HTGB), and temperature cycling-to meet automotive reliability standards. It is not present in non-H variants like SRT15A1G.
How does the guard ring feature improve SRT15HA1G reliability?
The guard ring in SRT15HA1G prevents edge-initiated avalanche breakdown during voltage transients, increasing ruggedness against line surges and inductive kickback. This structural enhancement directly extends operational life in unregulated input conditions common in automotive and industrial power supplies. The SRT15HA1G's guard ring is integral to its AEC-Q101 qualification path.
SRT15HA1G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- T-18, Axial
- Packaging:
- Tape & Box (TB)
- Product Status:
- Discontinued at Digi-Key
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 50 V
- Current - Average Rectified (Io):
- 1A
- Voltage - Forward (Vf) (Max) @ If:
- 700 mV @ 1 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:
- Through Hole
- Supplier Device Package:
- TS-1
- Operating Temperature - Junction:
- -55°C ~ 150°C
SRT15HA1G FAQ
1.How can I place an order for SRT15HA1G through Aetrix?
Please submit a Request for Quotation (RFQ) for SRT15HA1G 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 SRT15HA1G reliable?
The price and inventory of SRT15HA1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SRT15HA1G is usually 5 days.
3.What payment methods are accepted for SRT15HA1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SRT15HA1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SRT15HA1G?
SRT15HA1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SRT15HA1G 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 SRT15HA1G?
For technical support, including SRT15HA1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SRT15HA1G requirements.
6.How does Aetrix verify that SRT15HA1G is sourced from the original manufacturer or authorized distributors?
All SRT15HA1G 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 SRT15HA1G meets industry standards.
7.What is the process for return or replacement of SRT15HA1G?
All SRT15HA1G units undergo pre-shipment inspection (PSI). If there is an issue with SRT15HA1G, 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 SRT15HA1G part is unused and in its original packaging.
Return procedure for SRT15HA1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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