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Taiwan Semiconductor Corporation S12JC
- Part No.:
- S12JC
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
S12JC.pdf
- Description:
- DIODE GEN PURP 600V 12A DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:2,984
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Product details
Overview
S12JC from Taiwan Semiconductor is a 12A, 600V surface-mount glass-passivated silicon rectifier diode in DO-214AB (SMC) package, designed for high-efficiency AC/DC conversion in compact power supplies and lighting drivers.
For engineers reviewing the S12JC datasheet, S12JC pinout, S12JC application, or S12JC equivalent, key selection criteria include its 600V repetitive peak reverse voltage, 300A surge capability, 1.1V max forward voltage at 12A, 9°C/W junction-to-lead thermal resistance, and RoHS/halogen-free compliance for industrial-grade reliability.
Technical Context
The S12JC operates as a single-die standard recovery rectifier with a cathode-banded polarity marking, optimized for 50/60Hz and high-frequency switching applications up to 100kHz. Its glass-passivated junction ensures stable reverse leakage (<1µA at 25°C, <250µA at 125°C) and robust moisture resistance (J-STD-020 Level 1).
Thermally, it delivers 9°C/W junction-to-lead resistance and 44°C/W junction-to-ambient resistance under standard PCB mounting, enabling sustained 12A average forward current with appropriate copper area and airflow. The DO-214AB (SMC) package supports automated placement and meets UL 94V-0 flammability requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 600 V - Maximum non-repetitive reverse voltage the device blocks reliably in circuit |
| IF | 12 A - Continuous average forward current rating at TA = 75°C with adequate heatsinking |
| IFSM | 300 A - Peak surge current tolerance for 8.3ms half-sine wave, critical for inrush protection |
| VF (max) | 1.1 V @ 12A, 25°C - Directly impacts conduction loss and thermal design in high-current paths |
| RθJL | 9 °C/W - Enables accurate junction temperature estimation from lead temperature in layout |
| CJ | 78 pF @ 1MHz, 4V - Influences high-frequency switching noise and EMI filter sizing |
Pinout & Package
Package: DO-214AB (SMC), surface-mount, cathode indicated by molded band; matte tin-plated leads, J-STD-002 solderable, 0.270g typical weight.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unbanded end) | Forward current entry point | Connected to AC input or transformer secondary side; requires thermal relief pad for heat dissipation |
| Cathode (banded end) | Forward current exit / reverse voltage blocking terminal | Connected to output DC bus; polarity must be verified during placement to prevent catastrophic failure |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures long-term stability of reverse leakage and breakdown characteristics under humidity and thermal cycling |
| High IFSM (300A) | Supports reliable operation during cold-start surges in SMPS and LED drivers without derating |
| J-STD-020 Level 1 moisture sensitivity | Eliminates need for dry-pack or baking prior to reflow, reducing manufacturing overhead |
| UL 94V-0 molding compound | Meets flame-retardancy requirements for Class II insulated power supplies and lighting enclosures |
| Halogen-free per IEC 61249-2-21 | Complies with environmental regulations for export to EU, Japan, and other regulated markets |
Applications
| LED Lighting Driver | Desktop/Laptop Adapter |
|---|---|
Use Scenario: High-efficiency offline LED driver converting 85–265VAC to constant-current DC output for commercial luminaires. IC Role / Device Role / Timing Role: Output rectifier in flyback or bridgeless PFC stage, handling 12A continuous conduction mode current. Use Value: Low VF (≤1.1V) reduces conduction loss by ~1.3W vs. higher-VF alternatives, improving system efficiency and thermal margin. | Use Scenario: Secondary-side rectification in universal-input 65W–120W AC/DC adapters for portable computing. IC Role / Device Role / Timing Role: Main output rectifier in synchronous or quasi-resonant flyback topology, operating at 65–130kHz. Use Value: 600V VRRM provides 2× safety margin over 375VDC output rail, ensuring robustness against line transients and ringing. |
| Industrial SMPS | DC-DC Converter Input Stage |
Use Scenario: Front-end rectification in 24V/48V industrial power modules powering PLCs and sensors. IC Role / Device Role / Timing Role: Single-phase bridge leg component or standalone rectifier in unregulated bulk-capacitor charging path. Use Value: 300A IFSM withstands repeated motor-start or solenoid-activation surges without degradation. | Use Scenario: Input rectification for isolated 48V-to-12V DC-DC converters in telecom and networking equipment. IC Role / Device Role / Timing Role: Off-line rectifier feeding bulk capacitor before active front-end or LLC controller. Use Value: 9°C/W RθJL allows direct thermal coupling to copper pour, enabling >10W dissipation without external heatsink. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Vishay VS-12EWH06-M3 | Same 12A/600V rating, but TO-277 package (smaller footprint, higher RθJA) | Limited board space but lower thermal performance; not suitable for same PCB thermal design | Select when footprint reduction outweighs thermal margin needs |
| ON Semiconductor MUR1260CT | Ultrafast recovery (trr ≈ 60ns vs. S12JC's ~2µs), dual common-cathode configuration | Better for high-frequency PFC or resonant topologies; requires different layout and gate drive timing | Choose only if fast recovery is required; not drop-in for standard rectification |
Compared with VS-12EWH06-M3 and MUR1260CT, the S12JC offers superior thermal resistance (9°C/W vs. ≥15°C/W) and simpler single-diode layout, making it optimal for cost-sensitive, thermally constrained 50/60Hz and medium-frequency SMPS where standard recovery suffices.
Availability
S12JC is available at Aetrix Electronics and suitable for switching mode power supplies, LED lighting drivers, and industrial DC-DC converters requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for S12JC 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 for industrial and consumer applications.
The S12JC belongs to TSC's S12x series of high-current surface-mount rectifiers, engineered specifically for high-reliability, high-volume AC/DC power conversion where thermal robustness, surge immunity, and regulatory compliance are mandatory.
FAQ
What is the maximum repetitive peak reverse voltage (VRRM) rating for the S12JC?
The S12JC has a VRRM rating of 600 V, as specified in the Absolute Maximum Ratings table of the official Taiwan Semiconductor datasheet (Version D2102). This value is fixed for the S12JC variant and differs from the 400V (S12GC), 800V (S12KC), and 1000V (S12MC) variants in the same family. It defines the highest reverse voltage the S12JC can block repeatedly without breakdown under normal operating conditions.
Does the S12JC have a halogen-free construction?
Yes, the S12JC is halogen-free in accordance with IEC 61249-2-21, as explicitly stated in the FEATURES section of the Taiwan Semiconductor documentation. This applies to the molding compound and internal materials, supporting compliance with environmental directives in the EU, Japan, and other regulated markets where halogen content restrictions apply.
What is the forward voltage (VF) specification for the S12JC at rated current?
The S12JC has a maximum forward voltage of 1.1 V at IF = 12 A and TJ = 25°C, per the Electrical Specifications table. This is a guaranteed upper limit under pulsed test conditions (PW = 0.3 ms); actual VF in continuous operation will vary with junction temperature and may be lower at reduced current or elevated temperature.
Is the S12JC suitable for use in high-humidity environments?
Yes, the S12JC is rated J-STD-020 Level 1 for moisture sensitivity, meaning it can be stored indefinitely at ≤30°C/85% RH without dry-pack requirements and withstands standard reflow profiles without popcorning. Its glass-passivated junction further enhances long-term reliability in humid or thermally cycled industrial environments.
What package type does the S12JC use, and what are its key mechanical attributes?
The S12JC uses the DO-214AB (SMC) surface-mount package. Key mechanical attributes include UL 94V-0 flammability-rated molding compound, matte tin-plated leads compliant with J-STD-002, polarity indicated by cathode band, and a typical weight of 0.270 g. The package outline and suggested pad layout are documented in the Taiwan Semiconductor package drawing (Version D2102).
S12JC Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- DO-214AB, SMC
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 600 V
- Current - Average Rectified (Io):
- 12A
- Voltage - Forward (Vf) (Max) @ If:
- -
- Speed:
- Standard Recovery >500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 1 µA @ 600 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
S12JC FAQ
1.How can I place an order for S12JC through Aetrix?
Please submit a Request for Quotation (RFQ) for S12JC 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 S12JC reliable?
The price and inventory of S12JC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for S12JC is usually 5 days.
3.What payment methods are accepted for S12JC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for S12JC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for S12JC?
S12JC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your S12JC 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 S12JC?
For technical support, including S12JC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your S12JC requirements.
6.How does Aetrix verify that S12JC is sourced from the original manufacturer or authorized distributors?
All S12JC 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 S12JC meets industry standards.
7.What is the process for return or replacement of S12JC?
All S12JC units undergo pre-shipment inspection (PSI). If there is an issue with S12JC, 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 S12JC part is unused and in its original packaging.
Return procedure for S12JC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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