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Taiwan Semiconductor Corporation S3AB R5G
- Part No.:
- S3AB R5G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
S3AB R5G.pdf
- Description:
- DIODE GEN PURP 50V 3A DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:42
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Product details
Overview
S3AB R5G from Taiwan Semiconductor is a 3A, 50V standard surface-mount silicon rectifier diode in DO-214AA (SMB) package, featuring glass-passivated junction, 1.15V max forward voltage at 3A/25°C, 80A surge capability, and 150°C max junction temperature. It serves as primary AC/DC input rectifier in compact off-line SMPS and LED drivers.
For engineers reviewing the S3AB R5G datasheet, S3AB R5G pinout, S3AB R5G application, or S3AB R5G equivalent, key selection criteria include repetitive peak reverse voltage (50V), forward current rating (3A), thermal resistance (10°C/W), moisture sensitivity level (J-STD-020 Level 1), and RoHS/halogen-free compliance for high-reliability consumer and industrial power supplies.
Technical Context
The S3AB R5G is a single-die, unidirectional standard recovery rectifier optimized for cost-sensitive, medium-frequency switching applications up to ~100 kHz. Its 1500 ns reverse recovery time and 40 pF junction capacitance reflect trade-offs between low conduction loss and moderate switching speed.
Designed for surface-mount assembly with matte tin-plated leads compliant to J-STD-002, it operates across –55°C to +150°C junction range and meets UL 94V-0 flammability and JESD201 Class 2 whisker resistance requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 50 V - Maximum repetitive reverse blocking voltage; defines minimum input AC peak handling capability |
| IF(AV) | 3 A - Average forward current rating at TC = 75°C; determines continuous DC output capacity |
| VF | ≤1.15 V @ 3A, 25°C - Forward voltage drop directly impacts conduction loss and thermal design margin |
| IFSM | 80 A - Non-repetitive surge current rating; supports inrush tolerance during cold-start conditions |
| RθJL | 10 °C/W - Junction-to-lead thermal resistance; enables direct heatsinking via PCB copper pour or lead frame |
| trr | 1500 ns - Reverse recovery time; limits usable switching frequency and influences EMI in flyback/forward topologies |
Pinout & Package
DO-214AA (SMB) package: molded plastic case with cathode band marking; matte tin-plated gull-wing leads; 0.090g typical weight; UL 94V-0 rated compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Input terminal for positive half-cycle conduction | Connected to AC source or transformer secondary; carries full load current during forward bias |
| Cathode | Output terminal for forward current path | Connected to bulk capacitor or DC bus; polarity marked by visible band on body |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Enhances long-term reliability under humid or thermally cycling conditions without hermetic sealing |
| J-STD-020 Level 1 moisture sensitivity | Enables standard SMT reflow without baking or dry-pack requirements |
| RoHS and halogen-free compliance | Meets IEC 61249-2-21 and EU directives for environmentally constrained end markets |
| UL 94V-0 molding compound | Provides flame-retardant housing essential for safety-critical power adapters and lighting |
Applications
| LED Driver Input Rectification | USB-C Adapter Primary Side |
|---|---|
Use Scenario: Converts 90–264 VAC mains to pulsating DC before PFC stage in constant-current LED drivers. IC Role / Device Role / Timing Role: Standard recovery rectifier performing unidirectional conduction with minimal forward loss. Use Value: 1.15 V VF and 3 A rating support >85% efficiency at 15–30 W output while maintaining thermal headroom. | Use Scenario: Full-wave rectification of transformer secondary in compact 30–65 W USB-C PD adapters. IC Role / Device Role / Timing Role: Discrete diode providing isolated AC/DC conversion ahead of synchronous rectifier or controller IC. Use Value: 80 A IFSM withstands repeated inrush surges during plug insertion; SMB footprint saves board space vs. DO-41. |
| Industrial SMPS Auxiliary Supply | AC-DC Wall Plug Converter |
Use Scenario: Powers control circuitry (e.g., PWM IC, optocoupler, bias windings) in 100–500 W industrial PSUs. IC Role / Device Role / Timing Role: Low-cost, robust rectifier delivering stable 12–24 V auxiliary rail from auxiliary winding. Use Value: 150°C TJ max and –55°C TSTG enable operation in harsh ambient environments without derating. | Use Scenario: Single-phase bridge leg in universal-input (85–265 VAC), 5–12 W wall plug converters for IoT sensors and smart home devices. IC Role / Device Role / Timing Role: Standard recovery diode selected for cost/performance balance where Schottky losses are acceptable. Use Value: DO-214AA (SMB) package allows automated placement and meets IPC-A-610 Class 2 solder joint standards. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar standard rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ON Semi MUR350 | Ultrafast recovery (75 ns), higher VF (1.3 V), same 3A/50V rating and SMB package | Better suited for higher-frequency flyback converters (>200 kHz); increased conduction loss at high duty cycle | Select when trr < 100 ns required; avoid if thermal budget is tight |
| Vishay VS-3A50 | Standard recovery (1500 ns), identical VF (1.15 V), same 3A/50V rating and SMB package | Same performance envelope; differs in qualification grade (AEC-Q200 option available) | Preferred for automotive-qualified designs requiring extended temperature validation |
Compared with MUR350 and VS-3A50, the S3AB R5G offers lowest forward voltage among 50V SMB rectifiers at 3A, making it optimal for thermally constrained, medium-frequency applications where ultrafast recovery is unnecessary.
Availability
S3AB R5G is available at Aetrix Electronics and suitable for switching mode power supplies, LED lighting drivers, and AC-DC wall plug converters requiring stable component supply, consistent parametric performance, and full traceability.
Supply support for S3AB R5G 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 power, protection, and signal conditioning markets since 1979.
The S3AB R5G belongs to TSC's S3x series of standard recovery rectifiers designed specifically for cost-effective, high-volume AC/DC front-end rectification in consumer and industrial power supplies.
FAQ
What is the maximum junction temperature rating for the S3AB R5G?
The S3AB R5G has a maximum junction temperature (TJ) rating of +150°C, enabling reliable operation in thermally demanding environments such as enclosed LED drivers or sealed industrial power supplies. This rating is validated per JEDEC test conditions and must be maintained using appropriate PCB copper area or thermal vias to meet the 10°C/W RθJL specification. Thermal design for the S3AB R5G should ensure steady-state TJ remains below this limit under worst-case load and ambient conditions.
Does the S3AB R5G have RoHS and halogen-free compliance?
Yes, the S3AB R5G is fully RoHS compliant and halogen-free per IEC 61249-2-21, confirmed in Taiwan Semiconductor's official product documentation. This compliance ensures suitability for export to EU, China, and other regulated markets and supports environmentally responsible manufacturing processes. The S3AB R5G uses lead-free matte tin plating and halogen-free molding compound, both verified through material declarations and third-party testing reports.
What is the reverse recovery time (trr) of the S3AB R5G and how does it affect circuit design?
The S3AB R5G has a reverse recovery time (trr) of 1500 ns under IF = 0.5 A, IR = 1.0 A, and Irr = 0.25 A test conditions. This standard recovery characteristic makes it well-suited for line-frequency and medium-frequency (<100 kHz) switching applications but unsuitable for high-frequency resonant topologies where faster recovery is required. Designers using the S3AB R5G should account for associated switching loss and potential EMI in layout, especially near snubber networks.
Is the S3AB R5G suitable for automated SMT assembly without pre-baking?
Yes, the S3AB R5G is rated at Moisture Sensitivity Level 1 per J-STD-020, meaning it can be placed and reflowed using standard SMT processes without baking or dry-pack handling. Its DO-214AA (SMB) package and matte tin-plated leads comply with J-STD-002 solderability requirements. This eliminates moisture-related popcorning risk and simplifies production flow for the S3AB R5G in high-volume manufacturing environments.
What is the marking code and package type of the S3AB R5G?
The S3AB R5G is marked "S3AB" on the device body and packaged in DO-214AA (SMB) outline, a standardized surface-mount case with gull-wing leads and cathode band indication. The "R5G" suffix denotes tape-and-reel packaging (3,000 units per reel) and green compound (halogen-free). Dimensions and pad layout follow Taiwan Semiconductor's Package Outline Drawing for DO-214AA, ensuring compatibility with industry-standard pick-and-place and reflow equipment.
S3AB R5G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- DO-214AA, SMB
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 50 V
- Current - Average Rectified (Io):
- 3A
- Voltage - Forward (Vf) (Max) @ If:
- 1.15 V @ 3 A
- Speed:
- Standard Recovery >500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 1.5 µs
- Current - Reverse Leakage @ Vr:
- 10 µA @ 50 V
- Capacitance @ Vr, F:
- 40pF @ 4V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
- Operating Temperature - Junction:
- -55°C ~ 150°C
S3AB R5G FAQ
1.How can I place an order for S3AB R5G through Aetrix?
Please submit a Request for Quotation (RFQ) for S3AB R5G 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 S3AB R5G reliable?
The price and inventory of S3AB R5G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for S3AB R5G is usually 5 days.
3.What payment methods are accepted for S3AB R5G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for S3AB R5G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for S3AB R5G?
S3AB R5G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your S3AB R5G 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 S3AB R5G?
For technical support, including S3AB R5G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your S3AB R5G requirements.
6.How does Aetrix verify that S3AB R5G is sourced from the original manufacturer or authorized distributors?
All S3AB R5G 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 S3AB R5G meets industry standards.
7.What is the process for return or replacement of S3AB R5G?
All S3AB R5G units undergo pre-shipment inspection (PSI). If there is an issue with S3AB R5G, 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 S3AB R5G part is unused and in its original packaging.
Return procedure for S3AB R5G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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