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Taiwan Semiconductor Corporation S4G M6G
- Part No.:
- S4G M6G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
S4G M6G.pdf
- Description:
- DIODE GEN PURP 400V 4A DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:8,563
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Product details
Overview
S4G M6G from Taiwan Semiconductor is a 4A, 400V surface-mount silicon rectifier diode in DO-214AB (SMC) package, featuring glass-passivated junction, low forward voltage drop (1.15 V at 4 A), and high surge current capability (100 A). It serves as a primary AC/DC conversion element in compact power supplies.
For engineers reviewing the S4G M6G datasheet, S4G M6G pinout, S4G M6G application, or S4G M6G equivalent, key selection criteria include repetitive peak reverse voltage (400 V), forward current rating (4 A), thermal resistance (RθJL = 13 °C/W), and moisture sensitivity level (MSL 1).
Technical Context
The S4G M6G is a single-die, standard recovery rectifier with 1500 ns reverse recovery time (trr) under IF = 0.5 A, IR = 1.0 A, Irr = 0.25 A conditions. Its junction-to-lead thermal resistance of 13 °C/W enables direct PCB heat conduction in high-density layouts.
Designed for unidirectional conduction, it exhibits 10 µA max reverse leakage at 25°C and 250 µA at 125°C, with junction capacitance of 60 pF at 1 MHz and 4.0 V reverse bias - suitable for mid-frequency switching applications up to ~100 kHz.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 400 V - maximum non-repetitive reverse voltage the device blocks without breakdown |
| IF | 4 A - continuous average forward current at TL = 75°C, defining steady-state power handling |
| IFSM | 100 A - peak non-repetitive surge current for 8.3 ms half-sine, supporting inrush tolerance |
| VF | 1.15 V max at IF = 4 A, TJ = 25°C - determines conduction loss and thermal load in DC output stage |
| RθJL | 13 °C/W - thermal resistance from junction to lead, enabling direct copper pour cooling on PCB |
| trr | 1500 ns - reverse recovery time under specified test conditions, limiting usable switching frequency |
Pinout & Package
Package: DO-214AB (SMC), molded plastic case with matte tin-plated leads, polarity indicated by cathode band, weight ≈ 0.210 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Lead 1) | Forward current entry point | Connected to AC input or transformer secondary; requires adequate trace width for 4 A RMS |
| Cathode (Lead 2) | Forward current exit point | Connected to output capacitor or filter choke; cathode band marks this terminal on body |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Enhances long-term reliability and humidity resistance without hermetic sealing |
| MSL Level 1 per J-STD-020 | Zero floor life limitation - can be stored indefinitely before reflow soldering |
| UL 94V-0 molding compound | Meets flame-retardant safety requirements for end equipment certifications |
| JESD 201 Class 2 whisker resistance | Prevents tin whisker growth under thermal cycling, critical for automotive and industrial use |
Applications
| AC/DC Power Adapter | LED Driver Secondary Rectification |
|---|---|
Use Scenario: 12–24 V, 2–3 A wall adapter for consumer electronics with universal AC input. IC Role / Device Role / Timing Role: Primary output rectifier converting transformer secondary AC to DC bus. Use Value: 4 A rating and 1.15 V VF minimize conduction loss and thermal rise in space-constrained enclosures. | Use Scenario: Constant-current LED driver for commercial downlights operating from 100–277 V AC mains. IC Role / Device Role / Timing Role: Secondary-side rectifier in flyback or buck-derived topology delivering regulated DC to LED string. Use Value: 400 V VRRM provides margin over reflected output voltage spikes during MOSFET turn-off. |
| Industrial SMPS Input Stage | DC-DC Converter Front-End Rectification |
Use Scenario: 48 V output, 100 W industrial power supply with active PFC front-end. IC Role / Device Role / Timing Role: Output rectifier in post-PFC DC-DC stage, handling 4 A continuous load. Use Value: RθJL = 13 °C/W allows direct thermal coupling to copper pour, reducing need for heatsinks. | Use Scenario: Isolated 5 V/3 A auxiliary supply in telecom base station power module. IC Role / Device Role / Timing Role: Secondary-side rectifier in forward or push-pull converter feeding LDO or buck controller. Use Value: 100 A IFSM withstands startup surges and transient overloads without degradation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH4R04DJF | 4 A, 400 V, TO-277 package; trr = 50 ns (ultrafast); VF = 1.25 V @ 4 A | Lower trr enables higher-frequency operation (>100 kHz); higher VF increases conduction loss | Preferred where fast switching reduces EMI or enables smaller magnetics; requires layout review for TO-277 footprint |
| MBR440FCT | 4 A, 400 V Schottky; VF = 0.55 V @ 4 A; VRRM derated above 125°C | No reverse recovery charge; limited to ≤125°C ambient due to thermal runaway risk | Best for low-loss, low-noise 25–85°C environments; unsuitable for high-temperature industrial enclosures |
Compared with STTH4R04DJF and MBR440FCT, the S4G M6G offers superior thermal stability at elevated temperatures and lower cost in high-volume SMC assembly, while trading off speed and ultra-low VF for ruggedness and simplicity in fixed-frequency SMPS designs.
Availability
S4G M6G is available at Aetrix Electronics and suitable for switching mode power supplies, LED lighting drivers, and industrial DC-DC converters requiring stable component supply and long-lifecycle support.
Supply support for S4G M6G 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, industrial, and consumer markets since 1979.
The S4G M6G belongs to TSC's S4x series of general-purpose surface-mount rectifiers, engineered for cost-effective, reliable AC/DC conversion in high-volume power supply manufacturing.
FAQ
What is the maximum junction temperature rating for the S4G M6G?
The S4G M6G has a maximum junction temperature (TJ) rating of +150°C, with operational range from –55°C to +150°C. This allows reliable operation in enclosed industrial power supplies where ambient temperatures exceed 85°C, provided thermal design maintains junction temperature below this limit using the specified RθJL = 13 °C/W path. The S4G M6G must not be operated beyond this absolute maximum.
Does the S4G M6G have a halogen-free construction?
Yes, the S4G M6G is halogen-free in accordance with IEC 61249-2-21, and RoHS compliant. The molding compound contains no brominated or chlorinated flame retardants, meeting environmental compliance requirements for export to EU, Japan, and other regulated markets. This status is confirmed in the official Taiwan Semiconductor product specification document K2102.
What does the "M6G" suffix indicate in the S4G M6G part number?
The "M6G" suffix in S4G M6G is Taiwan Semiconductor's internal date and factory code: "M6" denotes manufacturing week/year (e.g., 2026), and "G" identifies the production facility. It does not affect electrical specifications - all S4G devices share identical VRRM = 400 V, IF = 4 A, and thermal parameters regardless of suffix variant. The core device remains S4G.
Can the S4G M6G replace a 1N5408 in a legacy through-hole design?
No, the S4G M6G 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, the S4G M6G has different package dimensions, thermal path, and mounting method. A redesign of PCB footprint and thermal relief is required; it is not a drop-in substitute.
Is the S4G M6G suitable for use in automotive applications?
The S4G M6G is not AEC-Q101 qualified and is not recommended for automotive powertrain or safety-critical systems. However, it may be used in non-safety automotive accessory circuits (e.g., infotainment power supplies) where ambient temperature, vibration, and lifetime requirements align with its industrial-grade specifications - subject to full system-level validation by the customer.
S4G M6G 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:
- 100 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 M6G FAQ
1.How can I place an order for S4G M6G through Aetrix?
Please submit a Request for Quotation (RFQ) for S4G M6G 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 M6G reliable?
The price and inventory of S4G M6G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for S4G M6G is usually 5 days.
3.What payment methods are accepted for S4G M6G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for S4G M6G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for S4G M6G?
S4G M6G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your S4G M6G 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 M6G?
For technical support, including S4G M6G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your S4G M6G requirements.
6.How does Aetrix verify that S4G M6G is sourced from the original manufacturer or authorized distributors?
All S4G M6G 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 M6G meets industry standards.
7.What is the process for return or replacement of S4G M6G?
All S4G M6G units undergo pre-shipment inspection (PSI). If there is an issue with S4G M6G, 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 M6G part is unused and in its original packaging.
Return procedure for S4G M6G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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