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Taiwan Semiconductor Corporation S12KC V7G
- Part No.:
- S12KC V7G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
S12KC V7G.pdf
- Description:
- DIODE GEN PURP 800V 12A DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:4,099
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Product details
Overview
S12KC V7G from Taiwan Semiconductor is a 12A, 800V surface-mount silicon rectifier diode in DO-214AB (SMC) package, featuring glass-passivated junction, 1.1V max forward voltage at 12A/25°C, 300A peak surge capability, and 150°C maximum junction temperature - deployed in high-efficiency AC/DC converters and industrial SMPS front-ends.
For engineers reviewing the S12KC V7G datasheet, S12KC V7G pinout, S12KC V7G application, or S12KC V7G equivalent, key selection criteria include repetitive peak reverse voltage (800V), thermal resistance (9°C/W junction-to-lead), moisture sensitivity level (J-STD-020 Level 1), RoHS/halogen-free compliance, and tape-and-reel packaging for automated assembly.
Technical Context
This single-die standard recovery rectifier operates with a 1.1V typical forward voltage drop at rated 12A DC current and 25°C junction temperature, enabling low conduction loss in high-current switching power supplies. Its 800V VRRM rating supports universal-input offline designs up to 380VAC line voltage with margin.
The device exhibits 1µA max reverse leakage at 25°C and 250µA at 125°C under rated reverse voltage, ensuring stable blocking performance across industrial temperature ranges. Thermal design is supported by validated RθJL = 9°C/W and RθJA = 44°C/W values, with cathode polarity marked via visible band on the DO-214AB molded case.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 800 V - supports 380VAC input with 2× safety margin in offline SMPS |
| IF | 12 A continuous - suitable for output rectification in 300–500W power stages |
| IFSM | 300 A (8.3ms half-sine) - withstands cold-start inrush and transient surges |
| VF (max) | 1.1 V @ 12A, 25°C - limits conduction loss to ≤13.2W at full load |
| TJ max | +150°C - enables operation in sealed enclosures or high-ambient environments |
| RθJL | 9°C/W - allows direct heatsinking via PCB copper pour or external clip |
| CJ | 78 pF @ 1MHz, 4V - minimizes high-frequency switching noise coupling |
Pinout & Package
DO-214AB (SMC) surface-mount package with matte tin-plated leads, UL 94V-0 molding compound, and cathode polarity indicated by a visible band. Weight: 0.270g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Lead 1) | Input current entry point | Connected to AC input or transformer secondary; requires adequate trace width for 12A RMS |
| Cathode (Lead 2) | Output current exit point | Marked by band; ties to output capacitor positive rail; critical for EMI filter layout |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures long-term reliability and stable VF/IR over 10+ year field life in humid environments |
| J-STD-020 Level 1 moisture sensitivity | Enables direct placement without baking; eliminates pre-reflow handling overhead |
| RoHS & halogen-free (IEC 61249-2-21) | Meets global environmental compliance for export and end-product certification |
| High IFSM (300A) | Survives repeated cold-start cycles in LED drivers and adapter applications without degradation |
Applications
| Industrial SMPS Front-End | LED Driver Secondary Rectification |
|---|---|
Use Scenario: 300W open-frame power supply for factory automation controllers with universal AC input (85–265VAC). IC Role / Device Role / Timing Role: Primary bridge rectifier replacing discrete diode arrays to reduce BOM count and footprint. Use Value: 800V VRRM provides 2.1× margin over 375V peak line voltage, minimizing risk of avalanche failure during brownouts. | Use Scenario: Constant-current LED driver for high-bay lighting operating from 277VAC line. IC Role / Device Role / Timing Role: Output rectifier in flyback secondary stage delivering 12A DC to parallel LED strings. Use Value: 1.1V VF at 12A reduces conduction loss by 1.8W vs. legacy 1.3V diodes, improving thermal headroom in enclosed fixtures. |
| AC/DC Adapter for Industrial IoT Gateways | DC-DC Converter Input Stage |
Use Scenario: 65W wall-mounted adapter powering edge gateway with extended temperature range (-40°C to +85°C ambient). IC Role / Device Role / Timing Role: Input rectifier in compact flyback topology with minimal heatsink area. Use Value: RθJL = 9°C/W enables direct thermal coupling to 2oz copper ground plane, limiting ΔT to <108°C at full load. | Use Scenario: 48V-to-12V isolated DC-DC converter in telecom shelf power distribution. IC Role / Device Role / Timing Role: Secondary-side synchronous rectifier replacement where cost-sensitive designs retain standard diodes. Use Value: 78pF junction capacitance suppresses high-frequency ringing during turn-off, reducing EMI filter component count. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-current rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH1208D | 12A, 800V, TO-220AC package; VF = 1.15V max; RθJA = 30°C/W | Through-hole mounting; higher thermal resistance requires heatsink | Preferred when board space permits heatsink integration and manual assembly is acceptable |
| VS-12EWH08-M3 | 12A, 800V, DO-214AB; VF = 1.05V typ; IR = 0.5µA max at 25°C | Near-identical footprint and solder profile; tighter IR spec for low-leakage designs | Best drop-in alternative if lower reverse leakage is required in precision sensing-coupled supplies |
Compared with STTH1208D and VS-12EWH08-M3, the S12KC V7G offers superior manufacturability (J-STD-020 Level 1), identical SMC footprint to VS-12EWH08-M3, and lower RθJL than STTH1208D - making it optimal for high-volume, thermally constrained, lead-free reflow production.
Availability
S12KC V7G is available at Aetrix Electronics and suitable for industrial SMPS, LED drivers, AC/DC adapters, and DC-DC converter input stages requiring stable component supply, consistent parametric performance, and full RoHS/halogen-free compliance.
Supply support for S12KC V7G 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 S12GC–S12MC family was designed specifically for high-current, high-voltage AC/DC rectification in space-constrained, high-reliability power conversion systems - emphasizing thermal robustness, automated assembly readiness, and environmental compliance.
FAQ
What is the marking code for S12KC V7G and how is polarity identified?
The S12KC V7G carries "S12KC" as its top-side laser marking code, followed by date and factory codes. Polarity is unambiguously indicated by a cathode band on the DO-214AB body - the banded end is the cathode terminal. This matches the standard SMC polarity convention used across TSC's rectifier portfolio and ensures correct orientation during automated pick-and-place.
Does S12KC V7G require moisture preconditioning before reflow soldering?
No, S12KC V7G is rated J-STD-020 Level 1 for moisture sensitivity, meaning it may be stored and processed directly without baking or dry-packing. This eliminates moisture-related popcorning risk and simplifies SMT line logistics - a key advantage over Level 2 or Level 3 rectifiers in high-throughput manufacturing.
What is the maximum allowable junction temperature for continuous operation of S12KC V7G?
The S12KC V7G has a maximum junction temperature (TJ) of +150°C, verified per absolute maximum ratings. For reliable long-term operation, derating curves show that average forward current must be reduced to ~8.5A at 100°C ambient with standard PCB cooling - ensuring safe thermal margins in sealed industrial enclosures.
How does the forward voltage of S12KC V7G compare to other 12A/800V rectifiers?
S12KC V7G specifies a maximum forward voltage of 1.1V at 12A and 25°C - matching industry benchmarks for standard recovery rectifiers. This value is confirmed under pulsed test conditions (PW = 0.3ms), ensuring realistic conduction loss estimation for continuous-duty applications like LED drivers and adapters.
Is S12KC V7G compatible with lead-free reflow profiles?
Yes, S12KC V7G features matte tin-plated leads qualified per J-STD-002 for solderability and is rated for peak reflow temperatures up to 260°C. Its DO-214AB package and UL 94V-0 molding compound are fully compatible with standard IPC/JEDEC J-STD-020 lead-free reflow profiles, including ramp-to-peak and time-above-liquidus specifications.
S12KC V7G 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):
- 12A
- Voltage - Forward (Vf) (Max) @ If:
- 1.1 V @ 12 A
- Speed:
- Standard Recovery >500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 1 µA @ 800 V
- Capacitance @ Vr, F:
- 78pF @ 4V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
- Operating Temperature - Junction:
- -55°C ~ 150°C
S12KC V7G FAQ
1.How can I place an order for S12KC V7G through Aetrix?
Please submit a Request for Quotation (RFQ) for S12KC V7G 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 S12KC V7G reliable?
The price and inventory of S12KC V7G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for S12KC V7G is usually 5 days.
3.What payment methods are accepted for S12KC V7G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for S12KC V7G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for S12KC V7G?
S12KC V7G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your S12KC V7G 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 S12KC V7G?
For technical support, including S12KC V7G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your S12KC V7G requirements.
6.How does Aetrix verify that S12KC V7G is sourced from the original manufacturer or authorized distributors?
All S12KC V7G 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 S12KC V7G meets industry standards.
7.What is the process for return or replacement of S12KC V7G?
All S12KC V7G units undergo pre-shipment inspection (PSI). If there is an issue with S12KC V7G, 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 S12KC V7G part is unused and in its original packaging.
Return procedure for S12KC V7G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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