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Taiwan Semiconductor Corporation S4B V7G
- Part No.:
- S4B V7G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
S4B V7G.pdf
- Description:
- DIODE GEN PURP 100V 4A DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:1,252
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Product details
Overview
S4B V7G from Taiwan Semiconductor is a 4A, 100V surface-mount silicon rectifier diode in DO-214AB (SMC) package, featuring glass-passivated junction, 100A peak surge current capability, 1.15V max forward voltage at 4A, and 10µA max reverse leakage at 25°C - used in AC/DC front-end rectification for compact SMPS and LED drivers.
For engineers reviewing the S4B V7G datasheet, S4B V7G pinout, S4B V7G application, or S4B V7G equivalent, key selection criteria include repetitive peak reverse voltage (100V), thermal resistance (13°C/W junction-to-lead), moisture sensitivity level (J-STD-020 Level 1), RoHS/halogen-free compliance, and compatibility with automated SMT placement.
Technical Context
The S4B V7G is a single-die, standard recovery rectifier optimized for cost-sensitive, medium-voltage power conversion where fast switching is not required. Its 1500ns reverse recovery time and 60pF junction capacitance reflect design trade-offs favoring low conduction loss over high-frequency performance.
Thermally, it supports continuous 4A operation up to 150°C junction temperature with 13°C/W junction-to-lead resistance, enabling direct PCB copper pour heatsinking. The DO-214AB (SMC) package provides robust mechanical mounting and meets UL 94V-0 flammability requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 100 V - maximum repetitive reverse voltage the device blocks without breakdown |
| IF | 4 A - average forward current rating under specified thermal conditions |
| IFSM | 100 A - non-repetitive surge current handling for 8.3ms half-sine wave |
| VF (max) | 1.15 V @ 4A, 25°C - determines conduction loss and thermal load in rectifier stage |
| IR (max) | 10 µA @ 100V, 25°C - defines reverse leakage contribution to standby power loss |
| trr | 1500 ns - limits usable switching frequency; suitable for ≤100 kHz SMPS topologies |
| RθJL | 13 °C/W - enables direct thermal path to PCB copper, critical for thermal management without heatsink |
Pinout & Package
DO-214AB (SMC) surface-mount package with cathode-indicated band; matte tin-plated leads compliant with J-STD-002 solderability and JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Input terminal for positive half-cycle conduction | Connected to AC input or transformer secondary; carries full load current during forward bias |
| Cathode | Output terminal for forward current flow | 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 and humidity resistance in unsealed industrial environments |
| J-STD-020 Level 1 moisture sensitivity | Enables direct placement without baking or dry-pack handling, reducing manufacturing overhead |
| UL 94V-0 molding compound | Meets flame-retardancy requirements for end-equipment safety certification (e.g., UL/EN 62368) |
| RoHS and halogen-free compliance | Supports global environmental compliance (EU RoHS, JEITA-MITI, IEC 61249-2-21) |
Applications
| AC/DC Adapter Rectification | LED Driver Input Stage |
|---|---|
Use Scenario: 12V/24V wall adapters converting universal AC input to low-voltage DC. IC Role / Device Role / Timing Role: Primary-side bridge or single-phase rectifier converting AC line to pulsating DC before bulk capacitor filtering. Use Value: 4A rating and 100V VRRM provide margin for 265VAC input with 1.15V VF minimizing conduction loss and thermal stress. | Use Scenario: Constant-current LED drivers for commercial lighting with offline AC input. IC Role / Device Role / Timing Role: Input rectifier in flyback or buck-derived topologies operating at 50–100 kHz. Use Value: 100A IFSM withstands inrush currents during cold-start; DO-214AB footprint allows high-density layout. |
| Industrial SMPS Front-End | DC-DC Converter Input Protection |
Use Scenario: 24V/48V industrial power supplies in PLC or sensor modules. IC Role / Device Role / Timing Role: Uncontrolled rectifier feeding active PFC or downstream DC-DC stages. Use Value: 150°C TJ max and 13°C/W RθJL support operation in enclosed enclosures without forced air cooling. | Use Scenario: Reverse-polarity protection and input rectification in isolated DC-DC modules. IC Role / Device Role / Timing Role: Polarity-sensitive clamp and rectifier in dual-input redundant power paths. Use Value: Cathode band marking ensures correct orientation; 10µA IR minimizes quiescent current in always-on systems. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH4R010DJF | 100V VRRM, 4A IF, but ultrafast trr = 35ns; higher VF ≈ 1.7V @ 4A | Better suited for high-frequency PFC or resonant converters requiring faster recovery | Select when EMI reduction or >200 kHz operation is required; avoid if conduction loss dominates thermal budget |
| MBR4100CT | Dual common-cathode Schottky; 100V, 4A per diode; VF ≈ 0.85V, but IR = 500µA @ 100°C | Lower VF reduces heat, but higher leakage limits use in high-temp or low-standby-power designs | Prefer for efficiency-critical 25–85°C ambient applications; not recommended for sealed high-temp enclosures |
Compared with STTH4R010DJF and MBR4100CT, the S4B V7G delivers optimal balance of low VF, low IR, and rugged surge capability in standard-recovery applications below 100 kHz - making it ideal for cost-sensitive, thermally constrained AC/DC front-ends where fast recovery is unnecessary.
Availability
S4B V7G is available at Aetrix Electronics and suitable for switching mode power supplies, LED lighting drivers, and industrial AC/DC adapters requiring stable component supply and long-term manufacturability.
Supply support for S4B 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, MOSFETs, and IGBTs, with ISO/TS 16949 and ISO 14001 certifications.
The S4A–S4M series was designed specifically for high-volume, cost-optimized AC/DC rectification in consumer and industrial power supplies - emphasizing reliability, SMT compatibility, and regulatory compliance without over-engineering for high-frequency use cases.
FAQ
What is the maximum junction temperature rating for the S4B V7G?
The S4B V7G has a maximum junction temperature (TJ MAX) of +150°C, allowing continuous operation in high-ambient environments such as enclosed power supplies or industrial control cabinets. This rating is validated under specified thermal conditions and must be maintained via appropriate PCB copper area or heatsinking to ensure reliability over lifetime. Derating curves in the S4B V7G datasheet define safe current limits above 25°C ambient.
Is the S4B V7G RoHS and halogen-free compliant?
Yes, the S4B V7G is fully RoHS compliant and halogen-free per IEC 61249-2-21. Taiwan Semiconductor confirms this compliance in the official S4B V7G product documentation, and the device carries no restricted substances above threshold limits. This makes the S4B V7G suitable for export to EU, Japan, China, and other regulated markets requiring environmental conformity.
What does the 'V7G' suffix indicate in S4B V7G?
The 'V7G' suffix in S4B V7G denotes Taiwan Semiconductor's internal revision and packaging code: 'V7' indicates version K2102 per the official datasheet revision history, and 'G' specifies green (halogen-free) molding compound. It does not affect electrical parameters - all S4B devices share identical VRRM = 100V, IF = 4A, and thermal specifications regardless of suffix variant.
Can the S4B V7G replace the S4B without modification?
Yes, the S4B V7G is a direct replacement for the base S4B part - same DO-214AB (SMC) package, identical pinout, and identical absolute maximum ratings and electrical specifications. The 'V7G' suffix reflects updated material content (halogen-free) and revision control, with no functional or mechanical differences affecting PCB layout or circuit performance.
What is the reverse recovery time (trr) of the S4B V7G and how does it impact circuit design?
The S4B V7G has a reverse recovery time (trr) of 1500 ns under standard test conditions (IF = 0.5A, IR = 1.0A, Irr = 0.25A). This value confirms its classification as a standard-recovery rectifier, limiting practical use to switching frequencies below 100 kHz. Designers must account for associated switching losses and potential EMI in high-frequency SMPS - the S4B V7G is best applied in conventional flyback or forward converters where conduction efficiency outweighs recovery speed.
S4B V7G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- DO-214AB, SMC
- Packaging:
- Cut Tape (CT)
- Product Status:
- Discontinued at Digi-Key
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 100 V
- Current - Average Rectified (Io):
- 4A
- Voltage - Forward (Vf) (Max) @ If:
- 1.15 V @ 4 A
- Speed:
- Standard Recovery >500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 1.5 µs
- Current - Reverse Leakage @ Vr:
- 10 µA @ 100 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
S4B V7G FAQ
1.How can I place an order for S4B V7G through Aetrix?
Please submit a Request for Quotation (RFQ) for S4B 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 S4B V7G reliable?
The price and inventory of S4B V7G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for S4B V7G is usually 5 days.
3.What payment methods are accepted for S4B V7G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for S4B V7G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for S4B V7G?
S4B V7G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your S4B 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 S4B V7G?
For technical support, including S4B V7G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your S4B V7G requirements.
6.How does Aetrix verify that S4B V7G is sourced from the original manufacturer or authorized distributors?
All S4B 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 S4B V7G meets industry standards.
7.What is the process for return or replacement of S4B V7G?
All S4B V7G units undergo pre-shipment inspection (PSI). If there is an issue with S4B 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 S4B V7G part is unused and in its original packaging.
Return procedure for S4B V7G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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