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Taiwan Semiconductor Corporation S3K R7G
- Part No.:
- S3K R7G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
S3K R7G.pdf
- Description:
- DIODE GEN PURP 800V 3A DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:36
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Product details
Overview
S3K R7G from Taiwan Semiconductor is a 800 V, 3 A surface-mount silicon rectifier diode in DO-214AB (SMC) package, featuring 100 A surge current capability, 1.15 V max forward voltage at 3 A, and 10 µA max reverse leakage at 25°C - used in AC/DC front-end rectification for industrial SMPS and LED drivers.
For engineers reviewing the S3K R7G datasheet, S3K R7G pinout, S3K R7G application, or S3K R7G equivalent, key selection criteria include repetitive peak reverse voltage (800 V), thermal resistance (13 °C/W junction-to-lead), reverse recovery time (1500 ns), moisture sensitivity level (J-STD-020 Level 1), and RoHS/halogen-free compliance.
Technical Context
This single-die standard recovery rectifier operates with a maximum junction temperature of 150°C and supports continuous forward current up to 3 A at case temperature ≤75°C. Its 1500 ns reverse recovery time and 60 pF junction capacitance at 4 V bias reflect trade-offs between switching loss and EMI performance in medium-frequency (<100 kHz) power conversion stages.
The device uses glass-passivated chip junctions and 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 molded body, and the package meets UL 94V-0 flammability rating.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 800 V - blocks up to 800 V repetitive reverse voltage without breakdown in SMPS bridge or output rectifier positions |
| IF | 3 A - rated average forward current under specified thermal conditions (e.g., PCB copper area ≥1 cm²) |
| IFSM | 100 A - withstands 8.3 ms half-sine surge, enabling robustness against line transients and inrush currents |
| VF (max) | 1.15 V @ 3 A, 25°C - determines conduction loss (3.45 W max at full load), directly impacting thermal design |
| IR (max) | 10 µA @ 800 V, 25°C - low leakage preserves efficiency in high-impedance hold-up or standby circuits |
| trr | 1500 ns - defines switching speed limit; suitable for <100 kHz operation but not high-frequency ZVS/ZCS topologies |
| RθJL | 13 °C/W - enables direct thermal path to PCB copper, critical for derating above 75°C ambient |
Pinout & Package
DO-214AB (SMC) surface-mount package: molded plastic body (UL 94V-0), cathode-indicated band, matte tin-plated leads, 0.210 g typical weight, J-STD-020 Level 1 moisture sensitivity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to AC input or transformer secondary; requires adequate copper pour for thermal dissipation |
| Cathode | Forward current exit / reverse blocking terminal | Marked by visible band; ties to DC bus or filter capacitor positive; polarity-critical in bridge configurations |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Enhances long-term reliability under humidity and thermal cycling vs. epoxy-passivated alternatives |
| Low VF (1.15 V max) | Reduces conduction loss by ~15% compared to legacy 1.3 V rectifiers at 3 A, lowering heatsink requirements |
| Junction-to-lead RθJL = 13 °C/W | Enables >2 W power dissipation with ≤26°C temperature rise across lead-to-PCB interface |
| J-STD-020 Level 1 rating | Allows unlimited floor life and reflow without baking - simplifies SMT line handling and inventory management |
| RoHS & halogen-free | Meets EU Directive 2011/65/EU and IEC 61249-2-21, supporting green manufacturing and export compliance |
Applications
| Industrial Switch-Mode Power Supplies | LED Driver Secondary Rectification |
|---|---|
Use Scenario: Primary-side or secondary-side rectification in 100–500 W open-frame SMPS for factory automation controllers. IC Role / Device Role / Timing Role: Standard recovery rectifier performing AC-to-DC conversion in bridge or center-tap configuration. Use Value: 800 V VRRM ensures margin against reflected spikes in 400 V DC bus systems; 100 A IFSM handles cold-start surges without degradation. | Use Scenario: Output rectification in constant-current LED drivers for street lighting and high-bay fixtures. IC Role / Device Role / Timing Role: Unidirectional current path delivering regulated DC to LED strings after transformer isolation. Use Value: Low 10 µA IR at 25°C minimizes standby power loss; DO-214AB footprint allows automated placement on thermally enhanced metal-core PCBs. |
| AC-DC Adapters (Universal Input) | DC-DC Converter Input Stage |
Use Scenario: Input rectification in 65 W laptop adapters accepting 90–264 VAC input. IC Role / Device Role / Timing Role: Full-wave bridge leg component converting universal AC input to pulsating DC before bulk capacitor. Use Value: 1500 ns trr balances EMI and efficiency at 65 kHz switching; glass passivation ensures field reliability over 5+ year service life. | Use Scenario: Input rectification in isolated 48 V–12 V DC-DC modules for telecom power shelves. IC Role / Device Role / Timing Role: High-voltage input stage rectifier feeding active clamp or forward converter primary. Use Value: 13 °C/W RθJL enables stable operation at 75°C case temperature without forced air, reducing system cooling cost. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar standard recovery rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH308S | 800 V, 3 A, TO-220AC package; 1.25 V VF max; 1200 ns trr; higher RθJA (50 °C/W) | Requires heatsink for >1.5 A continuous; unsuitable for space-constrained SMT designs | Choose STTH308S only when through-hole mounting and higher surge tolerance (150 A) are prioritized over board area. |
| ES3J | 600 V, 3 A, DO-214AB; 1.7 V VF max; 35 µA IR @ 25°C; 500 ns trr | Limited to ≤600 V systems; higher conduction loss increases thermal stress in 400 V bus applications | Select ES3J only for cost-sensitive 600 V designs where faster recovery (500 ns) justifies 0.55 V higher VF penalty. |
Compared with STTH308S and ES3J, the S3K R7G delivers optimal balance of 800 V blocking, SMT compatibility, low VF, and industry-standard thermal metrics - making it preferred for compact, high-reliability industrial power supplies where DO-214AB footprint and J-STD-020 Level 1 handling are mandatory.
Availability
S3K R7G is available at Aetrix Electronics and suitable for industrial switch-mode power supplies, LED driver secondary rectification, and AC-DC adapters requiring stable component supply, long-lifecycle support, and RoHS-compliant sourcing.
Supply support for S3K 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 S3K R7G belongs to TSC's S3x series of surface-mount standard recovery rectifiers, engineered for cost-effective, high-yield AC/DC conversion in mainstream power supplies where reliability, thermal performance, and automated assembly compatibility are essential.
FAQ
What is the maximum junction temperature rating for the S3K R7G?
The S3K R7G has a maximum junction temperature (TJ) of +150°C, verified per absolute maximum ratings in the official Taiwan Semiconductor datasheet. This rating allows operation in high-ambient environments when mounted on adequately sized copper areas. Derating begins above 75°C case temperature, and the S3K R7G must be thermally managed using its 13 °C/W junction-to-lead resistance to avoid exceeding 150°C under full 3 A load.
Does the S3K R7G meet RoHS and halogen-free requirements?
Yes, the S3K R7G is RoHS compliant and halogen-free, as explicitly stated in the "Features" section of the Taiwan Semiconductor S3A–S3M datasheet (Version O2301). It satisfies EU Directive 2011/65/EU and IEC 61249-2-21 standards, with no brominated flame retardants or chlorine-based compounds in the molding compound or plating.
What is the reverse recovery time (trr) specification for the S3K R7G?
The S3K R7G has a reverse recovery time (trr) of 1500 ns, measured under IF = 0.5 A, IR = 1.0 A, and Irr = 0.25 A conditions per the Electrical Specifications table. This value is typical for standard recovery rectifiers and confirms suitability for line-frequency and medium-frequency (<100 kHz) switching applications, but not for high-frequency synchronous rectification.
Is the S3K R7G pin-compatible with other devices in the S3x family?
Yes, all S3x devices including the S3K R7G share identical DO-214AB (SMC) package dimensions, pinout, and polarity marking (cathode band), making them mechanically interchangeable. Voltage ratings differ (S3A = 50 V, S3K = 800 V), so electrical substitution requires verification of VRRM, VF, and trr against circuit requirements - the S3K R7G is not a drop-in replacement for lower-voltage variants without design review.
What packaging and moisture sensitivity level does the S3K R7G have?
The S3K R7G is supplied in DO-214AB (SMC) package on 3,000-piece tape-and-reel, and carries J-STD-020 Moisture Sensitivity Level 1 - meaning it has unlimited floor life and may be placed directly into reflow without pre-baking. This simplifies SMT line integration and eliminates moisture-related popcorning risk during assembly.
S3K 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):
- 3A
- Voltage - Forward (Vf) (Max) @ If:
- 1.15 V @ 3 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
S3K R7G FAQ
1.How can I place an order for S3K R7G through Aetrix?
Please submit a Request for Quotation (RFQ) for S3K 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 S3K R7G reliable?
The price and inventory of S3K R7G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for S3K R7G is usually 5 days.
3.What payment methods are accepted for S3K R7G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for S3K R7G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for S3K R7G?
S3K R7G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your S3K 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 S3K R7G?
For technical support, including S3K R7G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your S3K R7G requirements.
6.How does Aetrix verify that S3K R7G is sourced from the original manufacturer or authorized distributors?
All S3K 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 S3K R7G meets industry standards.
7.What is the process for return or replacement of S3K R7G?
All S3K R7G units undergo pre-shipment inspection (PSI). If there is an issue with S3K 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 S3K R7G part is unused and in its original packaging.
Return procedure for S3K R7G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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