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Taiwan Semiconductor Corporation S4G R7G
- Part No.:
- S4G R7G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
S4G R7G.pdf
- Description:
- DIODE GEN PURP 400V 4A DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:1
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Product details
Overview
S4G R7G 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 R7G datasheet, S4G R7G pinout, S4G R7G application, or S4G R7G 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 placement systems.
Technical Context
This is a single-die, standard recovery rectifier optimized for high-current, medium-voltage switching power supplies. It uses a glass-passivated PN junction to ensure stable reverse blocking and low leakage across temperature, with a typical reverse recovery time of 1500ns under IF = 0.5A / IR = 1.0A conditions.
The device operates over -55°C to +150°C junction temperature range and delivers 4A average forward current with derating above 75°C ambient. Its DO-214AB (SMC) package provides robust thermal conduction via matte tin-plated leads meeting J-STD-002 solderability and JESD201 Class 2 whisker resistance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 400 V - Maximum repetitive reverse voltage the diode blocks without breakdown; defines usable input voltage range in bridge or single-phase rectifiers. |
| IF(AVG) | 4 A - Continuous average forward current rating at TC = 75°C; determines heatsink sizing and PCB copper area requirements. |
| IFSM | 100 A - Non-repetitive peak surge current (8.3ms half-sine); supports inrush current handling during power-up in offline converters. |
| VF | ≤1.15 V @ 4A, 25°C - Forward voltage drop directly impacts conduction loss and thermal design; lower VF reduces I²R heating in high-duty-cycle operation. |
| IR | ≤10 µA @ 400V, 25°C - Reverse leakage current affects standby power and high-impedance sensing accuracy in auxiliary supplies. |
| RθJL | 13 °C/W - Junction-to-lead thermal resistance enables direct thermal path to PCB copper; critical for estimating junction temperature rise under load. |
Pinout & Package
Package: DO-214AB (SMC), molded epoxy case meeting UL 94V-0, cathode indicated by band, matte tin-plated leads, 0.210g typical weight.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Lead 1) | Forward current entry point | Connected to AC input or transformer secondary; must handle full 4A RMS current and withstand surge transients. |
| Cathode (Lead 2) | Forward current exit point | Connected to bulk capacitor or DC bus; polarity marking ensures correct orientation in bridge or single-diode configurations. |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable reverse characteristics and long-term reliability under humidity and thermal cycling stress. |
| J-STD-020 Level 1 moisture sensitivity | Enables direct placement without baking; eliminates pre-conditioning delays in high-volume SMT assembly lines. |
| 100A IFSM surge rating | Supports repeated cold-start events in universal-input SMPS without degradation or failure. |
| RoHS & halogen-free compliance | Fulfills IEC 61249-2-21 and EU RoHS directives for environmentally regulated industrial and lighting products. |
Applications
| Industrial SMPS Rectification | LED Driver Input Stage |
|---|---|
Use Scenario: AC line rectification in 100–300W open-frame industrial power supplies with universal input (85–265VAC). IC Role / Device Role / Timing Role: Main power rectifier converting AC input to unregulated DC bus prior to PFC and DC/DC stages. Use Value: 400V VRRM safely handles 265VAC × √2 ≈ 375V peak plus margin; 4A rating supports continuous output power up to ~200W at 80% efficiency. | Use Scenario: Input rectification in constant-current LED drivers for street lighting and high-bay fixtures. IC Role / Device Role / Timing Role: Single-phase bridge leg component providing reliable DC feed to buck or flyback controller ICs. Use Value: Low 1.15V VF minimizes conduction loss in thermally constrained aluminum-core PCBs; 150°C TJ rating accommodates enclosed fixture temperatures. |
| AC/DC Adapter Front-End | DC-DC Converter Input Protection |
Use Scenario: Secondary-side rectification in isolated 12V/24V wall adapters powering IoT gateways and sensors. IC Role / Device Role / Timing Role: Output rectifier in flyback topology delivering regulated low-voltage DC output. Use Value: 100A IFSM withstands repeated plug-in surges; DO-214AB footprint allows compact layout with minimal trace inductance. | Use Scenario: Reverse-polarity protection and input rectification in 24–48V industrial DC-DC modules. IC Role / Device Role / Timing Role: Standalone rectifier ensuring correct polarity and blocking backfeed from downstream capacitors. Use Value: 13°C/W RθJL enables direct thermal coupling to metal-core PCBs; 10µA IR prevents battery drain in always-on backup circuits. |
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 fast recovery diode (trr ≈ 65ns); higher cost; TO-277 package. | Better suited for high-frequency PFC stages where trr < 100ns is required. | Select only if reduced switching loss outweighs cost and thermal trade-offs vs. S4G R7G's standard recovery. |
| ON Semi MUR440 | 4A, 400V ultrafast recovery (trr ≈ 50ns); DO-214AC (SMA) package; lower IFSM (60A). | Preferred in space-constrained designs needing faster recovery but tolerating lower surge margin. | Choose when board area is critical and surge events are infrequent; verify thermal performance with RθJA = 70°C/W. |
Compared with STTH4R04DJF and MUR440, the S4G R7G offers superior surge robustness (100A vs. 60–75A) and lower thermal resistance (13°C/W vs. ≥25°C/W), making it optimal for cost-sensitive, thermally demanding industrial rectification where standard recovery is acceptable.
Availability
S4G R7G is available at Aetrix Electronics and suitable for industrial SMPS, LED driver front-ends, and AC/DC adapter rectification requiring stable component supply, long-lifecycle support, and J-STD-020 Level 1 assembly readiness.
Supply support for S4G R7G 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 industrial, computing, and consumer markets since 1979.
The S4G R7G belongs to TSC's S4x series of surface-mount rectifiers designed specifically for high-reliability, high-current AC/DC conversion in cost-optimized industrial power systems.
FAQ
What is the maximum junction temperature rating for the S4G R7G?
The S4G R7G has a maximum junction temperature (TJ MAX) of +150°C, enabling operation in high-ambient environments such as enclosed LED luminaires or industrial control cabinets. This rating is validated per JEDEC test conditions and supports derating curves shown in Figure 1 of the S4G R7G datasheet. Thermal design must maintain TJ ≤ 150°C under worst-case load and ambient conditions.
Does the S4G R7G meet RoHS and halogen-free requirements?
Yes, the S4G R7G is RoHS compliant and halogen-free per IEC 61249-2-21. These certifications are confirmed in the official Taiwan Semiconductor product documentation for the S4G R7G and apply to all units shipped under standard ordering code S4G R7G. No exemptions or exceptions are applied to this variant.
What is the reverse recovery time (trr) specification for the S4G R7G?
The S4G R7G has a typical reverse recovery time (trr) of 1500 ns under IF = 0.5A, IR = 1.0A, and Irr = 0.25A test conditions. This value reflects its standard recovery behavior, distinguishing it from fast or ultrafast rectifiers. The S4G R7G datasheet specifies trr in Section "ELECTRICAL SPECIFICATIONS" and confirms it is not characterized for sub-500ns operation.
Can the S4G R7G be used in a full-wave bridge configuration?
Yes, the S4G R7G can be used as an individual leg in discrete full-wave bridge rectifiers due to its single-die, DO-214AB (SMC) package and cathode-band polarity marking. Four S4G R7G devices may be assembled into a bridge; however, dedicated bridge packages (e.g., GBU4K) offer tighter parameter matching and smaller footprint than discrete implementations.
What is the moisture sensitivity level (MSL) for the S4G R7G?
The S4G R7G is rated MSL Level 1 per J-STD-020, meaning it may be stored indefinitely at ≤30°C/60% RH and placed directly onto PCBs without baking or dry-pack requirements. This simplifies manufacturing logistics and eliminates reflow-related delamination risk - a key advantage confirmed in the S4G R7G mechanical data sheet.
S4G R7G 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:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- 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 R7G FAQ
1.How can I place an order for S4G R7G through Aetrix?
Please submit a Request for Quotation (RFQ) for S4G R7G 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 R7G reliable?
The price and inventory of S4G R7G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for S4G R7G is usually 5 days.
3.What payment methods are accepted for S4G R7G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for S4G R7G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for S4G R7G?
S4G R7G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your S4G R7G 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 R7G?
For technical support, including S4G R7G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your S4G R7G requirements.
6.How does Aetrix verify that S4G R7G is sourced from the original manufacturer or authorized distributors?
All S4G R7G 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 R7G meets industry standards.
7.What is the process for return or replacement of S4G R7G?
All S4G R7G units undergo pre-shipment inspection (PSI). If there is an issue with S4G R7G, 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 R7G part is unused and in its original packaging.
Return procedure for S4G R7G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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