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Taiwan Semiconductor Corporation S4A M6G
- Part No.:
- S4A M6G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
S4A M6G.pdf
- Description:
- DIODE GEN PURP 50V 4A DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:3,530
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Product details
Overview
S4A M6G from Taiwan Semiconductor is a surface-mount silicon rectifier diode with 4 A average forward current, 50 V repetitive peak reverse voltage, and DO-214AB (SMC) package. It features low forward voltage drop (≤1.15 V at 4 A, 25°C), high surge capability (100 A, 8.3 ms), and operates up to 150°C junction temperature-used in compact AC/DC adapters and offline SMPS input stages.
For engineers reviewing the S4A M6G datasheet, S4A M6G pinout, S4A M6G application, or S4A M6G equivalent, key selection criteria include its 50 V VRRM, 100 A IFSM, 13 °C/W RθJL, 60 pF junction capacitance, and 1500 ns reverse recovery time in high-frequency switching converters.
Technical Context
This single-die standard recovery rectifier uses glass-passivated junction technology for robustness and moisture resistance (J-STD-020 Level 1). Its thermal design supports high-power density layouts via low RθJL (13 °C/W) and UL 94V-0 molding compound.
Electrical behavior is defined by fixed VF ≤1.15 V at rated current, IR ≤10 µA at 25°C, and trr = 1500 ns under standardized 0.5 A/1.0 A test conditions-making it suitable for non-critical 50–100 kHz flyback and forward converter inputs where soft recovery is not required.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 50 V - Maximum non-repetitive reverse blocking voltage; sets upper limit for input rectification in 24–48 VAC systems. |
| IF | 4 A - Continuous average forward current at TL = 75°C; defines steady-state power handling in adapter primary-side rectifiers. |
| IFSM | 100 A - Peak non-repetitive surge current (8.3 ms half-sine); withstands inrush during cold-start of offline supplies. |
| VF | ≤1.15 V @ 4 A, 25°C - Forward conduction loss directly impacts efficiency and thermal rise in high-current paths. |
| trr | 1500 ns - Reverse recovery time determines switching losses and EMI generation in hard-switched topologies. |
| RθJL | 13 °C/W - Junction-to-lead thermal resistance enables direct heatsinking through PCB copper or metal-core substrates. |
| CJ | 60 pF @ 4 V - Junction capacitance affects high-frequency noise coupling and snubber design in fast-switching circuits. |
Pinout & Package
Package: DO-214AB (SMC), surface-mount, cathode-indicated by band. Matte tin-plated leads, J-STD-002 solderable, UL 94V-0 compliant molding compound, weight ≈0.210 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to AC input or transformer secondary; must handle full 4 A RMS and 100 A surge without bond wire failure. |
| Cathode | Forward current exit / reverse blocking terminal | Connected to bulk capacitor positive; polarity band ensures correct orientation during automated placement and prevents reverse bias failure. |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Enables stable long-term operation in humid environments and resists corrosion during reflow and board cleaning. |
| Moisture sensitivity level 1 | Eliminates bake requirement before SMT assembly-reduces manufacturing cost and cycle time. |
| RoHS & halogen-free compliance | Meets IEC 61249-2-21 and global environmental regulations for consumer and industrial end equipment. |
| High IFSM/IF ratio (25:1) | Supports robust startup and fault tolerance in unregulated or lightly loaded power supplies without derating. |
Applications
| AC/DC Adapters | Offline SMPS Input Stage |
|---|---|
Use Scenario: 24–48 VAC input rectification in wall-wart and desktop adapters with <100 W output. IC Role / Device Role / Timing Role: Primary-side standard recovery rectifier converting AC to pulsating DC prior to bulk capacitor filtering. Use Value: Low VF minimizes conduction loss at 4 A load; DO-214AB footprint allows dense layout while supporting 100 A surge during plug-in events. | Use Scenario: Input bridge or single-phase rectification in 36–72 VDC input industrial power modules. IC Role / Device Role / Timing Role: Discrete rectifying element in non-synchronous flyback or forward converter front-end. Use Value: 150°C max junction temperature and 13 °C/W RθJL enable reliable operation without forced air cooling in enclosed enclosures. |
| LED Driver Power Supply | Industrial Control Power Rails |
Use Scenario: Rectification stage in constant-current LED drivers for street lighting and commercial fixtures. IC Role / Device Role / Timing Role: High-reliability AC input rectifier operating continuously under ambient temperatures up to 85°C. Use Value: 10 µA max reverse leakage at 25°C ensures minimal standby power loss; halogen-free construction meets lighting safety standards. | Use Scenario: Auxiliary power supply input in PLC I/O modules and motor drive control boards. IC Role / Device Role / Timing Role: Input rectifier for isolated 5 V/12 V auxiliary rails powering microcontrollers and gate drivers. Use Value: J-STD-020 Level 1 rating and matte tin plating ensure compatibility with lead-free reflow profiles and long-term solder joint integrity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar standard recovery rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH4R05D | 4 A, 50 V, TO-220AC package; faster trr (≈120 ns), higher VF (1.3 V) | Requires heatsink mounting; unsuitable for space-constrained SMT designs | Prefer when lower switching loss dominates over layout density and thermal path simplicity |
| MBR450-E3/52 | 4 A, 50 V, DO-214AA (SMA); lower IFSM (50 A), higher RθJA (65 °C/W) | Limited surge margin; less effective thermal dissipation in high-ambient environments | Acceptable only in low-stress, low-inrush applications with ample PCB copper area |
Compared with STTH4R05D and MBR450-E3/52, the S4A M6G delivers optimal balance of surge robustness, thermal performance, and SMT manufacturability for cost-sensitive 4 A, 50 V rectification-without requiring heatsinks or layout compromises.
Availability
S4A M6G is available at Aetrix Electronics and suitable for AC/DC adapters, offline SMPS input stages, and LED driver power supplies requiring stable component supply and J-STD-020 Level 1 moisture handling.
Supply support for S4A 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, specializing in power rectifiers, TVS diodes, and MOSFETs since 1979.
The S4A M6G belongs to TSC's S4x series of general-purpose surface-mount rectifiers-designed specifically for cost-effective, high-volume AC/DC conversion in consumer and industrial power supplies where reliability and manufacturability are prioritized over ultra-fast switching.
FAQ
What is the maximum junction temperature rating for the S4A M6G?
The S4A M6G has a maximum junction temperature (TJ) rating of +150°C, verified per absolute maximum ratings table. This allows continuous operation in high-ambient environments such as enclosed LED drivers or industrial control units. Derating curves confirm usable current capacity down to 0 A at 150°C case temperature. The S4A M6G must be mounted on adequate copper area to maintain this limit under full 4 A load.
Does the S4A M6G meet RoHS and halogen-free requirements?
Yes, the S4A M6G is 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, making it suitable for environmentally regulated markets including EU, Japan, and China. The S4A M6G carries no exemptions and requires no special handling for RoHS compliance.
What is the reverse recovery time (trr) specification for the S4A M6G?
The S4A M6G has a typical reverse recovery time (trr) of 1500 ns, measured under IF = 0.5 A, IR = 1.0 A, and Irr = 0.25 A. This value is specified in the Electrical Specifications table and applies across the full operating temperature range. The S4A M6G is a standard recovery rectifier-not optimized for high-frequency ZVS or resonant topologies where trr < 100 ns is required.
Can the S4A M6G replace a DO-214AA (SMA) rectifier in an existing design?
No-the S4A M6G uses DO-214AB (SMC), which has larger pad dimensions and higher thermal mass than DO-214AA (SMA). While both are surface-mount, the S4A M6G's body length (7.11 mm vs. 4.5 mm) and lead spacing (6.22 mm vs. 2.92 mm) require PCB footprint revision. The S4A M6G offers superior thermal and surge performance, but direct replacement is not mechanically feasible without layout modification.
What is the marking code for the S4A M6G on the device body?
The S4A M6G is marked "S4A" on the device body, per the Ordering Information and Marking Diagram sections of the datasheet. The "M6G" suffix denotes tape-and-reel packaging (3,000 pcs/reel) and green compound (G), not part of the visible marking. The cathode band is the sole polarity indicator. No date code or factory code appears in the primary marking for this variant.
S4A 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):
- 50 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 @ 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
S4A M6G FAQ
1.How can I place an order for S4A M6G through Aetrix?
Please submit a Request for Quotation (RFQ) for S4A 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 S4A M6G reliable?
The price and inventory of S4A M6G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for S4A M6G is usually 5 days.
3.What payment methods are accepted for S4A M6G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for S4A M6G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for S4A M6G?
S4A M6G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your S4A 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 S4A M6G?
For technical support, including S4A M6G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your S4A M6G requirements.
6.How does Aetrix verify that S4A M6G is sourced from the original manufacturer or authorized distributors?
All S4A 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 S4A M6G meets industry standards.
7.What is the process for return or replacement of S4A M6G?
All S4A M6G units undergo pre-shipment inspection (PSI). If there is an issue with S4A 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 S4A M6G part is unused and in its original packaging.
Return procedure for S4A M6G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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