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Taiwan Semiconductor Corporation S3AB M4G
- Part No.:
- S3AB M4G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
S3AB M4G.pdf
- Description:
- DIODE GEN PURP 50V 3A DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,203
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Product details
Overview
S3AB M4G 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 - used in AC/DC front-end stages of compact SMPS and LED drivers.
For engineers reviewing the S3AB M4G datasheet, S3AB M4G pinout, S3AB M4G application, or S3AB M4G equivalent, key selection criteria include repetitive peak reverse voltage (50V), thermal resistance (10°C/W), moisture sensitivity level (J-STD-020 Level 1), RoHS/halogen-free compliance, and SMB footprint compatibility with automated placement.
Technical Context
This single-die standard recovery rectifier operates with a typical junction capacitance of 40pF at 1MHz/4V and exhibits a reverse recovery time of 1500ns under IF=0.5A, IR=1.0A, Irr=0.25A conditions. Its thermal design supports continuous conduction mode operation up to 3A with derating above 75°C lead temperature.
The device uses matte tin-plated leads compliant with J-STD-002 solderability and meets JESD201 Class 2 whisker resistance. Polarity is marked by a cathode band, and the UL 94V-0 molding compound ensures flame-retardant reliability in high-density PCB layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| IF (Avg) | 3 A - Continuous forward current rating defines maximum steady-state power conversion capacity |
| VRRM | 50 V - Peak repetitive reverse voltage sets maximum AC input or DC bus blocking capability |
| IFSM | 80 A - Non-repetitive surge current withstand enables robustness against line transients and inrush |
| VF (max) | 1.15 V @ 3A/25°C - Low forward drop reduces conduction loss and thermal load in compact designs |
| RθJL | 10 °C/W - Junction-to-lead thermal resistance enables direct heatsinking via PCB copper pour |
| trr | 1500 ns - Standard recovery speed suitable for ≤100 kHz switching topologies like flyback and buck converters |
| MSL | Level 1 (J-STD-020) - No floor life limitation; supports unlimited reflow without baking |
Pinout & Package
DO-214AA (SMB) surface-mount package with cathode-indicated polarity; 0.090g mass; UL 94V-0 molded body; matte tin-plated leads.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal | Connected to AC input or transformer secondary low-side in bridge or half-wave configuration |
| Cathode | Current exit terminal | Marked by band; ties to output capacitor positive or DC bus rail; defines unidirectional conduction path |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Enhances long-term reliability and humidity resistance in industrial environments without hermetic sealing |
| Low VF (1.15V max) | Reduces power dissipation by ~0.3W vs. higher-VF alternatives at 3A, easing thermal management |
| 80A IFSM rating | Withstands 6× rated current surges, supporting cold-start and short-circuit protection in offline supplies |
| J-STD-020 Level 1 MSL | Eliminates pre-reflow baking requirements, streamlining SMT assembly for high-volume production |
| Halogen-free (IEC 61249-2-21) | Meets environmental compliance mandates for consumer electronics and EU-based OEMs |
Applications
| LED Driver Power Stage | USB-C Adapter Secondary Rectification |
|---|---|
Use Scenario: High-efficiency constant-current LED driver operating from 85–265VAC input with flyback topology. IC Role / Device Role / Timing Role: Output rectifier converting transformer secondary AC to DC for LED string biasing. Use Value: 1.15V VF minimizes conduction loss at 3A output, improving system efficiency >88% at full load. | Use Scenario: 30W USB-C PD adapter with synchronous rectification disabled on secondary side. IC Role / Device Role / Timing Role: Primary secondary-side rectifier handling 3A average output current at 5–20V DC. Use Value: 50V VRRM safely blocks reflected voltage spikes during MOSFET turn-off in discontinuous conduction mode. |
| Industrial AC/DC Auxiliary Supply | Smart Home IoT Power Module |
Use Scenario: 5V/1A auxiliary supply powering MCU, sensors, and wireless SoCs in PLC I/O modules. IC Role / Device Role / Timing Role: Input-stage rectifier in compact 22mm × 18mm board space-constrained design. Use Value: DO-214AA (SMB) footprint enables high-density layout while maintaining 150°C TJ rating for extended service life. | Use Scenario: Battery-powered smart plug with integrated AC/DC converter for self-powered monitoring. IC Role / Device Role / Timing Role: Bridge rectifier leg in miniaturized full-wave rectification circuit feeding linear regulator. Use Value: Level 1 MSL and halogen-free construction meet RoHS/REACH requirements for global retail distribution. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar standard rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH3L06S | 600V VRRM, 3A IF, VF = 1.15V typ, trr = 65ns - ultrafast recovery | Targeted at PFC and higher-frequency boost converters (>100kHz) | Select when faster switching and lower EMI are required; not drop-in due to different VRRM and trr |
| SB350-E3/5BT | 50V VRRM, 3A IF, VF = 0.52V typ, trr = 35ns - Schottky, no reverse recovery | Used where low VF and zero trr critical, but limited to <125°C ambient | Prefer for low-loss, low-noise 5V/3A outputs; avoid in high-temp industrial enclosures |
Compared with STTH3L06S and SB350-E3/5BT, the S3AB M4G offers optimal balance of cost, ruggedness, and thermal stability for 50V-class SMPS below 100kHz, with proven reliability in mains-connected lighting and adapter applications.
Availability
S3AB M4G is available at Aetrix Electronics and suitable for switching mode power supplies, LED lighting drivers, and AC/DC adapters requiring stable component supply, consistent parametric performance, and J-STD-020 Level 1 assembly readiness.
Supply support for S3AB M4G 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 electronics and industrial markets since 1979.
The S3AB M4G belongs to TSC's S3x series of standard recovery rectifiers designed specifically for cost-sensitive, high-reliability AC/DC front-end rectification in consumer and industrial power supplies.
FAQ
What is the maximum junction temperature rating for the S3AB M4G?
The S3AB M4G has a maximum junction temperature (TJ) rating of +150°C, enabling reliable operation in enclosed power supplies and thermally constrained LED driver housings. This rating is supported by its 10°C/W junction-to-lead thermal resistance and UL 94V-0 molding compound. Derating begins above 75°C lead temperature per the forward current derating curve in the S3AB M4G datasheet.
Is the S3AB M4G RoHS and halogen-free compliant?
Yes, the S3AB M4G is fully RoHS compliant and halogen-free per IEC 61249-2-21. These compliance attributes are confirmed in the official Taiwan Semiconductor product documentation and verified through material declarations. The S3AB M4G meets environmental requirements for global electronics manufacturing, including EU WEEE and China RoHS directives.
What does the "M4G" suffix indicate in S3AB M4G?
The "M4G" suffix in S3AB M4G denotes Taiwan Semiconductor's internal packaging and environmental code: "M" indicates DO-214AA (SMB) package, "4" specifies tape-and-reel packing (3,000 units per reel), and "G" confirms halogen-free compound. This coding aligns with TSC's ordering nomenclature defined in the S3AB M4G datasheet revision M2102.
Can the S3AB M4G replace a 1N4007 in a new design?
The S3AB M4G is not a direct replacement for the 1N4007 due to differing voltage ratings (50V vs. 1000V) and package (DO-214AA vs. DO-41). While both are standard rectifiers, the S3AB M4G is optimized for surface-mount, high-density, automated assembly - whereas the 1N4007 is through-hole. Use S3AB M4G only where 50V blocking suffices and SMB footprint is acceptable.
What is the reverse recovery time (trr) specification for the S3AB M4G?
The S3AB M4G has a reverse recovery time (trr) of 1500 ns, measured under IF = 0.5A, IR = 1.0A, and Irr = 0.25A conditions. This standard recovery characteristic makes it suitable for 50–100 kHz switching applications such as flyback and forward converters. The trr value is confirmed in the Electrical Specifications table of the S3AB M4G datasheet (Version M2102).
S3AB M4G 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 M4G FAQ
1.How can I place an order for S3AB M4G through Aetrix?
Please submit a Request for Quotation (RFQ) for S3AB M4G 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 M4G reliable?
The price and inventory of S3AB M4G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for S3AB M4G is usually 5 days.
3.What payment methods are accepted for S3AB M4G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for S3AB M4G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for S3AB M4G?
S3AB M4G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your S3AB M4G 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 M4G?
For technical support, including S3AB M4G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your S3AB M4G requirements.
6.How does Aetrix verify that S3AB M4G is sourced from the original manufacturer or authorized distributors?
All S3AB M4G 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 M4G meets industry standards.
7.What is the process for return or replacement of S3AB M4G?
All S3AB M4G units undergo pre-shipment inspection (PSI). If there is an issue with S3AB M4G, 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 M4G part is unused and in its original packaging.
Return procedure for S3AB M4G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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