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Taiwan Semiconductor Corporation SS15HR3G
- Part No.:
- SS15HR3G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SS15HR3G.pdf
- Description:
- DIODE SCHOTTKY 50V 1A DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:2,298
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Product details
Overview
SS15HR3G from Taiwan Semiconductor is a 1A, 50V Schottky barrier surface-mount rectifier in DO-214AC (SMA) package, featuring 0.75V forward voltage at 1A/25°C, 40A peak surge current, and 125°C maximum junction temperature. It serves as a low-loss freewheeling or output rectifier in DC/DC converters and AC/DC adapters.
For engineers reviewing the SS15HR3G datasheet, SS15HR3G pinout, SS15HR3G application, or SS15HR3G equivalent, key selection criteria include forward voltage at operating temperature, reverse leakage at rated VRRM, thermal resistance (RθJL = 28°C/W), and compliance with J-STD-020 moisture sensitivity level 1.
Technical Context
This discrete Schottky diode uses a single-die construction optimized for high-frequency switching applications. Its guard ring structure provides overvoltage protection, and its matte tin-plated leads meet J-STD-002 solderability requirements.
The device operates across -55°C to +125°C junction temperature range with RθJA = 88°C/W and RθJL = 28°C/W. Reverse leakage is specified at ≤5mA @ 100°C and rated 50V reverse voltage, confirming suitability for thermally constrained power stages.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 50 V - Maximum repetitive reverse voltage; defines safe blocking capability in 50V-rated power rails |
| IF | 1 A - Continuous forward current rating; supports steady-state output rectification up to 1A |
| IFSM | 40 A - Non-repetitive surge current (8.3ms half-sine); handles startup/load-dump transients |
| VF | 0.75 V @ 1A, 25°C - Low conduction loss improves efficiency in high-duty-cycle SMPS |
| TJ max | 125 °C - Maximum junction temperature; enables operation in compact, unventilated enclosures |
| RθJL | 28 °C/W - Junction-to-lead thermal resistance; allows direct PCB copper pour heat sinking |
| MSL | Level 1 per J-STD-020 - No floor life limitation; compatible with standard SMT reflow without dry pack |
Pinout & Package
DO-214AC (SMA) surface-mount package with cathode indicated by molded band; 0.060g mass; UL 94V-0 molding compound; polarity-marked for automated placement.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential node (e.g., switch node or ground return) |
| Cathode | Forward current exit point | Connected to higher-potential node (e.g., output rail or VIN) |
Key Features
| Feature | Design Value |
|---|---|
| Guard ring structure | Enhances ruggedness against transient overvoltage events without external snubbers |
| Low VF at elevated temperature | 0.65V @ 1A, 100°C - Maintains efficiency during thermal stress in enclosed adapters |
| High IFSM/IF ratio (40:1) | Supports robust start-up in DC/DC converters with high input capacitance |
| Halogen-free & RoHS-compliant | Meets environmental compliance for global consumer electronics and industrial shipments |
Applications
| Switching Mode Power Supply (SMPS) | DC/DC Converters |
|---|---|
Use Scenario: Secondary-side synchronous rectification in isolated flyback or forward converters. IC Role / Device Role / Timing Role: Freewheeling diode providing low-loss current path during MOSFET off-time. Use Value: 0.75V VF reduces conduction loss by ~30% vs. standard PN diodes, improving overall efficiency by 1–2%. | Use Scenario: Output rectification in non-isolated buck or boost converters for embedded systems. IC Role / Device Role / Timing Role: Unidirectional current valve enabling regulated DC output generation. Use Value: 40A IFSM withstands load-step surges without degradation, supporting reliable 1A continuous delivery. |
| AC/DC Adapters | Flat Panel Display Power |
Use Scenario: Input bridge or output rectification in compact wall-wart adapters. IC Role / Device Role / Timing Role: High-frequency rectifier handling 50/60Hz input or high-frequency transformer secondary. Use Value: MSL Level 1 enables direct use in high-volume SMT lines without baking or special handling. | Use Scenario: Backlight LED driver supply rectification in LCD monitor power boards. IC Role / Device Role / Timing Role: Isolation barrier rectifier delivering stable bias to LED strings. Use Value: 125°C TJ max ensures reliability under sustained thermal load near display drivers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SS15H-E3/5AT (Vishay) | Same 50V VRRM, 1A IF, but VF = 0.72V @ 1A/25°C; RθJA = 90°C/W vs. 88°C/W | Slightly lower conduction loss but marginally higher thermal resistance | Preferred where minimal VF dominates over thermal margin |
| SS15FA (ON Semiconductor) | 50V VRRM, 1A IF, VF = 0.75V @ 1A/25°C; TJ max = 150°C; MSL Level 1 | Higher junction temperature rating enables extended operation in hotter environments | Chosen when ambient exceeds 85°C and long-term reliability at 150°C is required |
Compared with SS15HR3G, SS15H-E3/5AT offers marginally better conduction efficiency, while SS15FA extends thermal operating range to 150°C-both retain DO-214AC packaging but differ in thermal and reliability margins for specific system constraints.
Availability
SS15HR3G is available at Aetrix Electronics and suitable for switching mode power supplies, DC/DC converters, and AC/DC adapters requiring stable component supply, RoHS compliance, and MSL Level 1 manufacturability.
Supply support for SS15HR3G 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 semiconductor manufacturer specializing in discrete power devices, including rectifiers, TVS diodes, and MOSFETs, with global distribution and AEC-Q200 qualified products.
The SS12–SS115 series was designed for cost-sensitive, high-volume power conversion applications demanding low forward voltage, robust surge capability, and seamless SMT integration in consumer and industrial power supplies.
FAQ
What is the maximum junction temperature rating for SS15HR3G?
The SS15HR3G has a maximum junction temperature (TJ) of 125°C, as specified in the Absolute Maximum Ratings table. This rating applies under continuous operation with appropriate thermal management. Exceeding this limit may cause permanent degradation. The device also supports storage temperatures from –55°C to +150°C, but operational use above 125°C is not permitted for SS15HR3G.
Does SS15HR3G have a halogen-free and RoHS-compliant construction?
Yes, SS15HR3G is both halogen-free and RoHS compliant, as explicitly stated in the FEATURES section of the official datasheet. The molding compound meets UL 94V-0 flammability rating, and terminals are matte tin plated to satisfy J-STD-002 solderability standards. These attributes make SS15HR3G suitable for export to EU, China, and other regulated markets requiring environmental compliance.
What is the forward voltage of SS15HR3G at 1A and 100°C junction temperature?
The forward voltage (VF) of SS15HR3G is 0.65 V at 1 A and 100°C junction temperature, per the ELECTRICAL SPECIFICATIONS table. This value reflects real-world performance under thermal stress and is critical for calculating conduction losses in warm-running power stages such as enclosed adapters or densely packed DC/DC modules.
Is SS15HR3G suitable for automated SMT assembly without moisture preconditioning?
Yes, SS15HR3G is rated MSL Level 1 per J-STD-020, meaning it has unlimited floor life and requires no baking or dry-pack handling before reflow soldering. Its moisture sensitivity is negligible, enabling direct placement on high-speed pick-and-place machines and compatibility with standard lead-free reflow profiles used in commercial electronics manufacturing.
What package type does SS15HR3G use, and how is polarity identified?
SS15HR3G uses the DO-214AC (SMA) surface-mount package. Polarity is identified by a molded cathode band on the body - the banded end is the cathode terminal. The package dimensions conform to JEDEC DO-214AC standards, and the suggested pad layout is provided in the datasheet to ensure optimal solder joint reliability and thermal transfer.
SS15HR3G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- DO-214AC, SMA
- Packaging:
- Tape & Reel (TR)
- 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:
- 750 mV @ 1 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 200 µA @ 50 V
- Capacitance @ Vr, F:
- -
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
- Operating Temperature - Junction:
- -55°C ~ 150°C
SS15HR3G FAQ
1.How can I place an order for SS15HR3G through Aetrix?
Please submit a Request for Quotation (RFQ) for SS15HR3G 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 SS15HR3G reliable?
The price and inventory of SS15HR3G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SS15HR3G is usually 5 days.
3.What payment methods are accepted for SS15HR3G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SS15HR3G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SS15HR3G?
SS15HR3G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SS15HR3G 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 SS15HR3G?
For technical support, including SS15HR3G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SS15HR3G requirements.
6.How does Aetrix verify that SS15HR3G is sourced from the original manufacturer or authorized distributors?
All SS15HR3G 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 SS15HR3G meets industry standards.
7.What is the process for return or replacement of SS15HR3G?
All SS15HR3G units undergo pre-shipment inspection (PSI). If there is an issue with SS15HR3G, 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 SS15HR3G part is unused and in its original packaging.
Return procedure for SS15HR3G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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