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Taiwan Semiconductor Corporation S3A V7G
- Part No.:
- S3A V7G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
S3A V7G.pdf
- Description:
- DIODE GEN PURP 50V 3A DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:4,977
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Product details
Overview
S3A V7G from Taiwan Semiconductor is a 3 A, 50 V surface-mount silicon rectifier diode in DO-214AB (SMC) package, featuring 1.15 V max forward voltage at 3 A and 100 A non-repetitive surge capability - used in AC/DC front-end rectification for compact SMPS and LED drivers.
For engineers reviewing the S3A V7G datasheet, S3A V7G pinout, S3A V7G application, or S3A V7G equivalent, key selection criteria include repetitive peak reverse voltage (50 V), thermal resistance (13 °C/W junction-to-lead), reverse recovery time (1500 ns), moisture sensitivity level (J-STD-020 Level 1), and RoHS/halogen-free compliance.
Technical Context
This single-die standard recovery rectifier operates with a maximum junction temperature of 150 °C and exhibits 10 µA max reverse leakage at 25 °C. Its DO-214AB (SMC) package supports automated placement and meets UL 94V-0 flammability rating.
The device delivers 3 A average forward current with 100 A surge rating (8.3 ms half-sine), and its 1500 ns reverse recovery time reflects standard recovery behavior - suitable for line-frequency and low-frequency switching applications, not high-frequency synchronous rectification.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 50 V - maximum repetitive reverse voltage the diode blocks without breakdown |
| IF(AVG) | 3 A - continuous forward current rating at TA = 25 °C with adequate heatsinking |
| IFSM | 100 A - peak non-repetitive surge current (8.3 ms half-sine) for transient overload handling |
| VF @ 3 A | ≤1.15 V - forward voltage drop defining conduction loss and thermal dissipation at rated current |
| IR @ 50 V | ≤10 µA @ 25 °C - reverse leakage current affecting standby power and high-impedance circuit integrity |
| trr | 1500 ns - reverse recovery time influencing switching loss and EMI in hard-switched topologies |
| RθJL | 13 °C/W - junction-to-lead thermal resistance enabling direct PCB copper pour thermal management |
Pinout & Package
DO-214AB (SMC) surface-mount package with cathode band marking; matte tin-plated leads compliant with J-STD-002 solderability and JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry terminal | Connected to AC input or transformer secondary low-side during positive half-cycle |
| Cathode | Forward current exit terminal | Marked by band; connects to output capacitor or DC bus; defines polarity in bridge or discrete rectifier layout |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Enhances long-term reliability and humidity resistance in unsealed industrial environments |
| Moisture sensitivity level 1 | Enables direct use without baking prior to reflow, reducing manufacturing overhead |
| UL 94V-0 molding compound | Meets flame-retardancy requirements for end equipment safety certifications (e.g., UL/EN 62368) |
| RoHS and halogen-free compliance | Supports environmental compliance for global markets including EU and China RoHS |
| Automated placement compatibility | Standardized DO-214AB footprint enables high-yield pick-and-place assembly on SMT lines |
Applications
| AC/DC Adapter Rectification | LED Driver Input Stage |
|---|---|
Use Scenario: 5–65 W wall adapters converting universal AC input to low-voltage DC. IC Role / Device Role / Timing Role: Primary-side standard recovery rectifier conducting full-wave or bridge output. Use Value: 3 A rating and 100 A surge handle inrush currents from bulk capacitors; 1.15 V VF limits conduction loss at 50–60 Hz line frequency. | Use Scenario: Off-line LED drivers powering streetlights or commercial fixtures. IC Role / Device Role / Timing Role: Input rectifier in flyback or buck-derived topologies before PFC stage or directly feeding HV DC bus. Use Value: 150 °C TJ max and 13 °C/W RθJL support operation in thermally constrained enclosed housings without active cooling. |
| Industrial SMPS Front-End | DC-DC Converter Input Protection |
Use Scenario: 24–48 V input industrial power supplies with wide ambient temperature range. IC Role / Device Role / Timing Role: Secondary-side rectifier or auxiliary supply rectifier in isolated DC-DC modules. Use Value: J-STD-020 Level 1 moisture rating eliminates pre-bake step; matte tin plating ensures robust solder joint reliability after multiple thermal cycles. | Use Scenario: Input-stage protection in 12–48 V DC-DC converters subjected to load dump or reverse polarity events. IC Role / Device Role / Timing Role: Polarity protection diode or OR-ing element in redundant power paths. Use Value: 50 V VRRM provides margin above nominal input; 10 µA IR at 25 °C minimizes quiescent current in always-on monitoring circuits. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar standard recovery rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ON Semiconductor MUR350 | 50 V VRRM, 3 A IF, 100 A IFSM, but ultrafast trr = 75 ns vs. S3A V7G's 1500 ns | Better suited for higher-frequency flyback or resonant converters where switching loss dominates | Select MUR350 only if trr < 200 ns is required; S3A V7G remains optimal for cost-sensitive line-frequency designs |
| Vishay VS-3A50 | Identical 50 V VRRM, 3 A IF, DO-214AB package, but VF = 1.25 V (max) and RθJA = 50 °C/W vs. 47 °C/W | Slightly higher conduction loss and lower thermal efficiency in high-ambient deployments | VS-3A50 is a direct form-fit alternative; prefer S3A V7G when thermal headroom or VF-critical designs exist |
Compared with MUR350 and VS-3A50, the S3A V7G offers the lowest forward voltage (1.15 V max) and best junction-to-ambient thermal resistance (47 °C/W) among 50 V, 3 A DO-214AB rectifiers - making it preferred for thermally constrained, line-frequency rectification where ultrafast recovery is unnecessary.
Availability
S3A V7G is available at Aetrix Electronics and suitable for AC/DC adapters, LED drivers, and industrial SMPS requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for S3A V7G 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 for industrial and consumer power systems.
The S3A V7G belongs to TSC's S3x series of general-purpose surface-mount rectifiers - engineered for cost-effective, reliable AC/DC conversion in high-volume power supplies where standard recovery performance and JEDEC-compliant packaging are prioritized.
FAQ
What is the maximum junction temperature rating for the S3A V7G?
The S3A V7G has a maximum junction temperature (TJ) rating of +150 °C, verified per absolute maximum ratings table. This allows operation in high-ambient environments such as enclosed LED drivers or industrial power supplies. Derating curves confirm usable current capacity down to 0 A at 150 °C case temperature. The S3A V7G must be mounted on sufficient copper area to maintain TJ ≤ 150 °C under worst-case load and ambient conditions.
Is the S3A V7G RoHS and halogen-free compliant?
Yes, the S3A V7G is fully RoHS compliant and halogen-free, as confirmed in the official Taiwan Semiconductor documentation. This compliance meets EU Directive 2011/65/EU and China RoHS II requirements. The molding compound and lead finish contain no brominated flame retardants, chlorine, fluorine, bromine, iodine, or antimony above threshold limits - critical for export-oriented power supply manufacturers.
What does the 'V7G' suffix in S3A V7G indicate?
The 'V7G' suffix in S3A V7G denotes Taiwan Semiconductor's internal date code and factory marking: 'V' = year code (2023), '7' = work week (week 37), and 'G' = fabrication site. It does not affect electrical specifications - all S3A devices share identical VRRM = 50 V, IF = 3 A, and DO-214AB packaging regardless of suffix. The base part number S3A defines the electrical and mechanical identity of the S3A V7G.
Can the S3A V7G replace a 1N5408 in through-hole designs?
No, the S3A V7G is a surface-mount DO-214AB (SMC) device and is not a direct replacement for the through-hole 1N5408 (DO-201AD). While both are 3 A, 1000 V rectifiers, their packages, thermal paths, and mounting methods differ fundamentally. Retrofitting S3A V7G into a 1N5408 footprint requires PCB redesign. For SMD alternatives to 1N5408, consider TSC's S3M V7G (1000 V version) in same DO-214AB package.
What is the reverse recovery time (trr) of the S3A V7G and how does it impact circuit design?
The S3A V7G has a reverse recovery time (trr) of 1500 ns, measured at IF = 0.5 A, IR = 1.0 A, and Irr = 0.25 A. This standard recovery characteristic makes it unsuitable for high-frequency (>100 kHz) switching topologies where fast recovery or ultrafast diodes (e.g., trr < 100 ns) are required to minimize switching loss and EMI. Use the S3A V7G in 50/60 Hz or low-kHz rectification only - such as in linear or quasi-resonant SMPS front-ends.
S3A V7G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- DO-214AB, SMC
- 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:
- -
- Speed:
- Standard Recovery >500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 1.5 µs
- Current - Reverse Leakage @ Vr:
- 10 µA @ 50 V
- Capacitance @ Vr, F:
- 60pF @ 4V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
- Operating Temperature - Junction:
- -55°C ~ 150°C
S3A V7G FAQ
1.How can I place an order for S3A V7G through Aetrix?
Please submit a Request for Quotation (RFQ) for S3A V7G 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 S3A V7G reliable?
The price and inventory of S3A V7G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for S3A V7G is usually 5 days.
3.What payment methods are accepted for S3A V7G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for S3A V7G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for S3A V7G?
S3A V7G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your S3A V7G 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 S3A V7G?
For technical support, including S3A V7G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your S3A V7G requirements.
6.How does Aetrix verify that S3A V7G is sourced from the original manufacturer or authorized distributors?
All S3A V7G 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 S3A V7G meets industry standards.
7.What is the process for return or replacement of S3A V7G?
All S3A V7G units undergo pre-shipment inspection (PSI). If there is an issue with S3A V7G, 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 S3A V7G part is unused and in its original packaging.
Return procedure for S3A V7G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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