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Taiwan Semiconductor Corporation S4K R7G
- Part No.:
- S4K R7G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
S4K R7G.pdf
- Description:
- DIODE GEN PURP 800V 4A DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:8,334
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Product details
Overview
S4K R7G from Taiwan Semiconductor is a 4A, 800V 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 high-efficiency AC/DC front-end rectification for industrial SMPS.
For engineers reviewing the S4K R7G datasheet, S4K R7G pinout, S4K R7G application, or S4K R7G equivalent, key selection criteria include repetitive peak reverse voltage (800V), 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.
Technical Context
This single-die standard recovery rectifier operates with a 150°C maximum junction temperature and exhibits 1500ns reverse recovery time under IF = 0.5A, IR = 1.0A, Irr = 0.25A conditions. Its 60pF junction capacitance at 1MHz/4V enables stable performance in high-frequency switching topologies.
The device uses matte tin-plated leads compliant with J-STD-002 solderability and meets JESD 201 Class 2 whisker resistance. Polarity is marked by cathode band; case molding compound satisfies UL 94V-0 flammability rating.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 800 V - supports input rectification up to 565V RMS AC line voltage with safety margin |
| IF | 4 A continuous - delivers rated output power in compact SMC footprint without forced cooling |
| IFSM | 100 A (8.3ms half-sine) - withstands inrush surges in offline power supplies |
| VF | ≤1.15 V @ 4A, 25°C - minimizes conduction loss and thermal stress in high-duty-cycle operation |
| IR | ≤10 µA @ 800V, 25°C - ensures low standby power loss in energy-sensitive designs |
| RθJL | 13 °C/W - enables direct heat transfer to PCB copper for passive thermal management |
| trr | 1500 ns - suitable for <100 kHz switching applications; not recommended for >200 kHz ZVS/ZCS topologies |
Pinout & Package
Package: DO-214AB (SMC), molded plastic case with cathode band marking; dimensions per Taiwan Semiconductor outline drawing; weight ≈0.210g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | AC input / positive-side connection | Accepts incoming AC phase; bonded to die substrate; requires adequate copper pour for thermal dissipation |
| Cathode | DC output / negative-side connection | Delivers rectified output; marked by visible band; primary heat path to PCB via leadframe |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Enhances long-term reliability under humidity and thermal cycling; eliminates need for conformal coating in industrial environments |
| J-STD-020 Level 1 moisture sensitivity | Allows unlimited floor life before reflow; eliminates baking requirement and simplifies SMT line logistics |
| UL 94V-0 molding compound | Meets flame-retardancy requirements for end equipment safety certifications (e.g., UL 62368-1) |
| RoHS + halogen-free (IEC 61249-2-21) | Complies with global environmental regulations and enables use in green electronics manufacturing |
| Matte tin plating (J-STD-002) | Ensures consistent wetting and joint integrity during lead-free reflow (260°C peak) |
Applications
| Industrial SMPS Front-End Rectification | LED Driver Input Stage |
|---|---|
Use Scenario: AC mains input rectification in 100–300W industrial switch-mode power supplies operating at 50/60Hz with 800V derating margin. IC Role / Device Role / Timing Role: Standard recovery rectifier providing unidirectional current flow and DC bus generation. Use Value: 100A IFSM handles cold-start surges; 13°C/W RθJL allows thermal design with minimal copper area on 2-layer PCB. | Use Scenario: Bridge or single-diode rectification in constant-current LED drivers for street lighting and high-bay fixtures. IC Role / Device Role / Timing Role: Line-frequency rectifier converting AC input to pulsating DC prior to bulk capacitor filtering. Use Value: 10µA IR at 25°C reduces no-load power loss; DO-214AB footprint fits tight board space constraints in driver modules. |
| AC-DC Adapter Secondary Side | DC-DC Converter Input Protection |
Use Scenario: Output rectification in universal-input (90–264VAC) wall adapters powering consumer electronics. IC Role / Device Role / Timing Role: High-current output rectifier in flyback or forward converter secondary circuits. Use Value: 1.15V VF limits conduction loss at 4A load; glass passivation prevents degradation during repeated thermal cycling. | Use Scenario: Reverse-polarity and back-EMF protection diode across DC input of isolated DC-DC modules in telecom power systems. IC Role / Device Role / Timing Role: Clamp and freewheeling diode absorbing inductive kickback during transient faults. Use Value: 150°C TJ max and 100A IFSM ensure robustness against 100ms overvoltage transients on 48V DC distribution rails. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar standard recovery rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH4R08DJF | Same 4A/800V rating; TO-277A package (smaller footprint, higher RθJA = 60°C/W) | Higher thermal resistance requires more aggressive heatsinking or lower ambient; better suited for space-constrained but thermally managed layouts | Select when board area is critical and thermal design includes localized copper or airflow |
| ON Semi MUR480 | Ultrafast recovery (trr ≈ 75ns); same DO-214AB package; VF = 1.7V @ 4A (higher conduction loss) | Enables higher-frequency operation (>200 kHz) but increases steady-state power loss and junction temperature | Select only when trr-driven EMI reduction outweighs efficiency penalty in high-switching-frequency converters |
Compared with STTH4R08DJF and MUR480, the S4K R7G offers optimal balance of surge robustness, thermal performance, and cost for 50–100 kHz industrial rectification - leveraging its 13°C/W RθJL and 100A IFSM without ultrafast trade-offs.
Availability
S4K R7G is available at Aetrix Electronics and suitable for industrial SMPS, LED driver modules, AC-DC adapters, and DC-DC converter input protection requiring stable component supply and long-lifecycle support.
Supply support for S4K 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 industrial, computing, and consumer markets since 1979.
The S4A–S4M series was designed specifically for cost-sensitive, high-reliability AC/DC front-end rectification in industrial power supplies and lighting systems where surge immunity and long-term stability outweigh ultrafast switching needs.
FAQ
What is the maximum junction temperature rating for the S4K R7G?
The S4K R7G has a maximum junction temperature (TJ) of +150°C, verified per absolute maximum ratings table in the official Taiwan Semiconductor datasheet (Version K2102). This rating applies across the full operating range and supports reliable operation in enclosed industrial enclosures with ambient temperatures up to 85°C when mounted on ≥1 in² 2-oz copper. The S4K R7G must not exceed this limit during transient or steady-state conditions.
Is the S4K R7G RoHS and halogen-free compliant?
Yes, the S4K R7G is fully RoHS compliant and halogen-free per IEC 61249-2-21, as explicitly stated in the "Features" section of the Taiwan Semiconductor S4A–S4M datasheet (Version K2102). The device uses halogen-free molding compound and matte tin-plated leads, making it suitable for environmentally regulated markets including EU and Japan. This compliance is certified and documented by Taiwan Semiconductor for the S4K R7G production lot.
What does the 'R7G' suffix indicate in S4K R7G?
The 'R7G' suffix in S4K R7G denotes Taiwan Semiconductor's internal date code and assembly location: 'R7' indicates week 7 of 2023 (or 2033), and 'G' identifies the fabrication site. It is not a functional variant - all electrical and mechanical specifications match the base S4K part defined in the S4A–S4M family datasheet. The S4K R7G shares identical VRRM, IFSM, VF, and package dimensions with other S4K-marked units.
Can the S4K R7G be used in place of a Schottky diode in a 48V DC-DC converter input stage?
No - the S4K R7G is a standard recovery rectifier (trr = 1500 ns), not a Schottky diode. Its reverse recovery behavior causes significant switching loss and EMI in high-frequency DC-DC converters (>100 kHz). While it can block 48V reverse polarity, using the S4K R7G instead of a Schottky in such applications risks overheating and instability. For 48V input protection, a true Schottky like SB560 or SR306 is appropriate; the S4K R7G remains valid only for line-frequency or low-kHz rectification.
What is the cathode marking method on the S4K R7G package?
The cathode of the S4K R7G is marked by a distinct, continuous black or dark gray band located near one end of the DO-214AB (SMC) body, per the "Mechanical Data" and "Marking Diagram" sections of the Taiwan Semiconductor datasheet (Version K2102). This band aligns with the cathode terminal and is visible under standard optical inspection. No laser marking or alphanumeric codes denote polarity - only the band, consistent across all S4x devices in the family.
S4K 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):
- 800 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 @ 800 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
S4K R7G FAQ
1.How can I place an order for S4K R7G through Aetrix?
Please submit a Request for Quotation (RFQ) for S4K 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 S4K R7G reliable?
The price and inventory of S4K R7G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for S4K R7G is usually 5 days.
3.What payment methods are accepted for S4K R7G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for S4K R7G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for S4K R7G?
S4K R7G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your S4K 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 S4K R7G?
For technical support, including S4K R7G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your S4K R7G requirements.
6.How does Aetrix verify that S4K R7G is sourced from the original manufacturer or authorized distributors?
All S4K 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 S4K R7G meets industry standards.
7.What is the process for return or replacement of S4K R7G?
All S4K R7G units undergo pre-shipment inspection (PSI). If there is an issue with S4K 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 S4K R7G part is unused and in its original packaging.
Return procedure for S4K R7G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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