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Taiwan Semiconductor Corporation S4G V7G
- Part No.:
- S4G V7G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
S4G V7G.pdf
- Description:
- DIODE GEN PURP 400V 4A DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:49
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Product details
Overview
S4G V7G from Taiwan Semiconductor is a 4A, 400V 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 industrial SMPS and LED drivers.
For engineers reviewing the S4G V7G datasheet, S4G V7G pinout, S4G V7G application, or S4G V7G equivalent, key selection criteria include repetitive peak reverse voltage (400V), thermal resistance (13°C/W junction-to-lead), moisture sensitivity level (J-STD-020 Level 1), RoHS/halogen-free compliance, and DO-214AB mechanical compatibility with automated SMT placement.
Technical Context
The S4G V7G is a single-die, standard recovery rectifier optimized for high-current, medium-voltage switching power supplies. Its 1500ns reverse recovery time and 60pF junction capacitance reflect trade-offs favoring low conduction loss over ultra-fast switching.
Designed for operation up to 150°C junction temperature, it uses matte tin-plated leads compliant with J-STD-002 solderability and JESD201 Class 2 whisker resistance. Polarity is marked by a cathode band on the DO-214AB body.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 400 V - maximum repetitive reverse voltage the device blocks without breakdown |
| IF | 4 A - continuous average forward current rating at 75°C lead temperature |
| 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 @ 400V, 25°C - defines leakage-related standby power loss in high-impedance circuits |
| RθJL | 13 °C/W - enables thermal design using lead temperature as proxy for junction temperature |
| trr | 1500 ns - limits usable frequency range in hard-switched topologies |
Pinout & Package
DO-214AB (SMC) surface-mount package with cathode-indicating band; dual-leaded, gull-wing outline; 0.210g mass; UL 94V-0 molding compound; matte tin-plated leads.
| 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 rectified DC path | Connected to bulk capacitor or downstream converter; polarity mark visible as band on package body |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Enhances long-term reliability under humidity and thermal cycling vs. epoxy-passivated alternatives |
| J-STD-020 Level 1 moisture sensitivity | Enables direct placement without baking or dry-pack requirements in standard SMT lines |
| RoHS and halogen-free compliance | Meets IEC 61249-2-21 and global environmental directives for industrial and lighting products |
| 100A IFSM rating | Supports robust startup and fault tolerance in offline SMPS with high inrush currents |
| DO-214AB mechanical standardization | Ensures compatibility with existing pick-and-place nozzles, reflow profiles, and PCB land patterns |
Applications
| Industrial SMPS Rectification | LED Driver Input Stage |
|---|---|
Use Scenario: AC line rectification in 100–300W open-frame industrial power supplies. IC Role / Device Role / Timing Role: Primary-side uncontrolled rectifier converting 85–265VAC to pulsating DC before PFC stage. Use Value: 4A/400V rating and 100A surge capacity handle universal input surges and hold-up time demands. | Use Scenario: Off-line constant-current LED driver for streetlight or high-bay fixtures. IC Role / Device Role / Timing Role: Bridge or single-diode rectifier feeding bulk capacitor and flyback controller. Use Value: Low VF (≤1.15V) reduces heat generation in thermally constrained aluminum-core PCBs. |
| AC-DC Adapter Front-End | DC-DC Converter Input Protection |
Use Scenario: 24V/3A wall adapter powering industrial sensors or PLC I/O modules. IC Role / Device Role / Timing Role: Output rectifier in secondary-side synchronous or diode-based topology. Use Value: DO-214AB footprint allows compact layout; 150°C TJ rating supports sealed enclosure operation. | Use Scenario: Reverse-polarity and transient protection at input of isolated DC-DC modules. IC Role / Device Role / Timing Role: Series blocking diode preventing backfeed and clamping negative transients. Use Value: 400V VRRM withstands induced spikes on 24/48V bus; 10µA IR minimizes quiescent drain. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH4R04DJF | 4A/400V, TO-277A package, 1.25V VF max, 500ns trr | Faster recovery enables higher-frequency designs but higher VF increases conduction loss | Prefer when EMI reduction or >100kHz operation is required; requires different footprint |
| ON Semi MUR440 | 4A/400V, DO-201AD package, 1.3V VF max, 75ns trr, 50A IFSM | Ultrafast recovery suits snubberless flyback; lower surge rating limits inrush tolerance | Choose for noise-sensitive consumer adapters; verify surge margin against transformer inductance |
Compared with STTH4R04DJF and MUR440, the S4G V7G prioritizes surge robustness and thermal efficiency over speed - making it optimal for cost-sensitive, thermally demanding industrial rectifiers where 1500ns trr is acceptable.
Availability
S4G V7G is available at Aetrix Electronics and suitable for industrial SMPS, LED drivers, AC-DC adapters, and DC-DC converter input stages requiring stable component supply and J-STD-020 Level 1 moisture handling.
Supply support for S4G 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 analog and discrete semiconductor manufacturer headquartered in Hsinchu, Taiwan, serving industrial, computing, and consumer markets since 1979.
The S4G V7G belongs to TSC's S4x series of general-purpose surface-mount rectifiers, engineered for high-reliability AC/DC conversion in cost-sensitive, thermally constrained applications where surge resilience and manufacturability are critical.
FAQ
What is the maximum junction temperature rating for the S4G V7G?
The S4G V7G has a maximum junction temperature (TJ) rating of +150°C, verified per absolute maximum ratings table. This allows reliable operation in enclosed industrial enclosures or high-ambient environments when thermal design respects the 13°C/W junction-to-lead resistance. Derating curves confirm 4A average current is sustainable up to 75°C lead temperature. The S4G V7G must not exceed this limit to maintain parametric integrity and long-term reliability.
Is the S4G V7G RoHS and halogen-free compliant?
Yes, the S4G V7G is fully RoHS compliant and halogen-free per IEC 61249-2-21. This is confirmed in the "Features" section of the official datasheet (Version K2102). The device uses halogen-free molding compound and matte tin-plated leads, satisfying environmental requirements for export to EU, China, and other regulated markets. The S4G V7G meets both directives without exception or exemption.
What does the marking code 'S4G' indicate on the S4G V7G device?
The marking code 'S4G' on the S4G V7G identifies it as the 400V variant within Taiwan Semiconductor's S4x rectifier family. Per the Absolute Maximum Ratings table, 'S4G' corresponds to VRRM = 400V, VR(RMS) = 280V, and shares IF = 4A and IFSM = 100A with all S4x variants. The 'V7G' suffix denotes tape-and-reel packaging (3,000 units) and green compound, consistent with TSC's ordering nomenclature. The S4G V7G marking is laser-etched on the DO-214AB body.
Can the S4G V7G replace the S4D (200V) or S4J (600V) in an existing design?
No - the S4G V7G is not a drop-in replacement for S4D or S4J due to differing VRRM ratings (400V vs. 200V/600V), which directly impact safety margin and failure mode under overvoltage stress. While package and pinout are identical, substituting alters reverse blocking capability and may violate regulatory creepage/clearance requirements. The S4G V7G must be validated for its specific 400V use case; design reuse requires recalculation of voltage derating and transient immunity. Always verify with the S4G V7G datasheet.
What is the reverse recovery time (trr) specification for the S4G V7G?
The S4G V7G has a typical reverse recovery time (trr) of 1500 ns, measured at IF = 0.5A, IR = 1.0A, and Irr = 0.25A per the Electrical Specifications table. This value reflects its standard recovery behavior - suitable for 50/60Hz and low-kHz switching applications but not recommended for >100kHz hard-switched topologies. The S4G V7G's trr is confirmed in Figure 6 of the datasheet, including test circuit details. No min/max range is specified; 1500 ns is the typ value.
S4G 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):
- 400 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 @ 400 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
S4G V7G FAQ
1.How can I place an order for S4G V7G through Aetrix?
Please submit a Request for Quotation (RFQ) for S4G 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 S4G V7G reliable?
The price and inventory of S4G V7G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for S4G V7G is usually 5 days.
3.What payment methods are accepted for S4G V7G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for S4G V7G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for S4G V7G?
S4G V7G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your S4G 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 S4G V7G?
For technical support, including S4G V7G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your S4G V7G requirements.
6.How does Aetrix verify that S4G V7G is sourced from the original manufacturer or authorized distributors?
All S4G 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 S4G V7G meets industry standards.
7.What is the process for return or replacement of S4G V7G?
All S4G V7G units undergo pre-shipment inspection (PSI). If there is an issue with S4G 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 S4G V7G part is unused and in its original packaging.
Return procedure for S4G V7G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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