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Taiwan Semiconductor Corporation S12GC R7G
- Part No.:
- S12GC R7G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
S12GC R7G.pdf
- Description:
- DIODE GEN PURP 400V 12A DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:6,740
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Product details
Overview
S12GC R7G from Taiwan Semiconductor is a 12A, 400V surface-mount glass-passivated silicon rectifier diode in DO-214AB (SMC) package, featuring low forward voltage drop (≤1.1 V at 12 A), high surge current capability (300 A), and junction temperature rating up to +150°C - deployed in AC/DC front-end stages of compact switching mode power supplies.
For engineers reviewing the S12GC R7G datasheet, S12GC R7G pinout, S12GC R7G application, or S12GC R7G equivalent, key selection criteria include repetitive peak reverse voltage (400 V), thermal resistance (RθJL = 9 °C/W), moisture sensitivity level (MSL 1), RoHS/halogen-free compliance, and tape-and-reel packaging for automated assembly.
Technical Context
This single-die standard recovery rectifier operates with a maximum junction temperature of +150°C and exhibits a typical junction capacitance of 78 pF at 1 MHz and 4.0 V reverse bias. Its low forward voltage drop and high IFSM support efficient energy conversion in high-frequency SMPS topologies.
The device uses glass passivation for junction protection, matte tin-plated leads compliant with J-STD-002 solderability, and meets JESD201 Class 2 whisker resistance. Polarity is marked by a cathode band on the DO-214AB molded case.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| IF (Avg) | 12 A - continuous forward current rating defines usable output power capacity in rectification stage |
| VRRM | 400 V - peak reverse blocking voltage determines maximum AC input voltage compatibility |
| IFSM | 300 A - non-repetitive surge rating enables robustness against line transients and startup inrush |
| VF @ 12 A | ≤1.1 V - low conduction loss reduces thermal stress and improves system efficiency |
| RθJL | 9 °C/W - low junction-to-lead thermal resistance supports direct PCB copper heatsinking |
| MSL | Level 1 - no floor life limitation; suitable for standard reflow without dry-pack requirements |
| CJ | 78 pF - junction capacitance impacts EMI filtering design and high-frequency switching behavior |
Pinout & Package
Package: DO-214AB (SMC), molded epoxy case with UL 94V-0 rating, cathode indicated by band, matte tin-plated leads.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Lead 1) | Input terminal for positive half-cycle conduction | Connected to AC input or transformer secondary; requires adequate trace width for 12 A continuous current |
| Cathode (Lead 2) | Output terminal for rectified DC path | Connected to bulk capacitor or downstream converter; polarity marking critical for correct orientation |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Enhances long-term reliability under humidity and thermal cycling vs. epoxy-passivated alternatives |
| Low VF (≤1.1 V @ 12 A) | Reduces conduction losses by ~15% compared to legacy 1.3 V rectifiers at same current |
| High IFSM (300 A) | Withstands 60-Hz line surges up to 3.5 cycles without degradation - critical for universal-input adapters |
| MSL Level 1 | Eliminates bake-out and dry-pack handling; compatible with standard SMT reflow profiles |
| Halogen-free & RoHS | Meets IEC 61249-2-21 and EU RoHS Directive 2011/65/EU for green manufacturing compliance |
Applications
| AC/DC Adapter Front-End | LED Driver Input Rectification |
|---|---|
Use Scenario: Universal-input (90–264 VAC) wall adapter converting AC to DC for USB-C PD or low-voltage logic rails. IC Role / Device Role / Timing Role: Primary-side uncontrolled rectifier delivering full-wave DC to bulk capacitor and downstream flyback controller. Use Value: 400 V VRRM safely handles 264 VAC × √2 ≈ 373 V peak; 12 A rating supports >100 W output designs. | Use Scenario: Constant-current LED driver for commercial downlights operating from 120/230 VAC mains. IC Role / Device Role / Timing Role: Input bridge rectifier (used as single diode in voltage-doubler or single-phase configuration). Use Value: Low VF minimizes heat generation in enclosed fixtures; MSL Level 1 simplifies automated assembly. |
| Industrial SMPS Input Stage | DC-DC Converter Pre-Regulator |
Use Scenario: 24 V/48 V industrial power supply with wide-input range and high reliability requirements. IC Role / Device Role / Timing Role: Secondary-side rectifier in forward or push-pull topology feeding synchronous rectifier controller. Use Value: RθJL = 9 °C/W enables direct mounting to copper pour for thermal management without heatsink. | Use Scenario: High-efficiency isolated DC-DC module accepting 36–75 VDC input for telecom or server applications. IC Role / Device Role / Timing Role: Input rectifier in active clamp forward or LLC resonant converter pre-regulator stage. Use Value: 300 A IFSM withstands bus transients during hot-swap events; halogen-free compound meets IPC-J-STD-020. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH12R06DJF | 600 V VRRM, TO-220AC package, VF = 1.15 V @ 12 A, RθJA = 30 °C/W | Higher voltage rating but through-hole; less suited for high-density SMT layouts | Choose when higher reverse margin or legacy board compatibility is required |
| ON Semi MUR1240CT | 400 V VRRM, TO-220AB dual common-cathode, VF = 1.2 V @ 12 A, IFSM = 200 A | Dual-diode configuration enables center-tapped or full-bridge use; lower surge rating | Prefer when dual-diode functionality or existing TO-220 footprint reuse is needed |
Compared with STTH12R06DJF and MUR1240CT, the S12GC R7G offers superior SMT manufacturability (DO-214AB, MSL 1), lower thermal resistance to lead, and optimized cost-per-watt for space-constrained 400 V SMPS designs - though it lacks dual-diode integration or extended voltage headroom.
Availability
S12GC R7G is available at Aetrix Electronics and suitable for switching mode power supplies, AC/DC adapters, LED lighting drivers, and DC-DC converter pre-regulators requiring stable component supply and RoHS-compliant sourcing.
Supply support for S12GC 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 power, automotive, and industrial markets since 1979.
The S12GC R7G belongs to TSC's S12x series of high-current surface-mount rectifiers, engineered specifically for high-efficiency, high-reliability AC/DC conversion in compact consumer and industrial power systems.
FAQ
What is the maximum junction temperature rating for the S12GC R7G?
The S12GC R7G has a maximum junction temperature (TJ) rating of +150°C, enabling operation in thermally demanding environments such as enclosed LED drivers or industrial power supplies. This rating is validated per JEDEC test conditions and must be maintained via proper PCB thermal design using the specified RθJL = 9 °C/W path. Exceeding this limit risks irreversible parametric shift or failure.
Does the S12GC R7G meet RoHS and halogen-free requirements?
Yes, the S12GC R7G is fully RoHS compliant per EU Directive 2011/65/EU and halogen-free per IEC 61249-2-21. These certifications are confirmed in TSC's official product documentation (Version D2102) and verified through material declarations. The device contains no brominated flame retardants, chlorine, or fluorine above threshold limits.
What is the moisture sensitivity level (MSL) of the S12GC R7G?
The S12GC R7G is rated MSL Level 1 per J-STD-020, meaning it has unlimited floor life and does not require dry packing or baking prior to reflow soldering. This simplifies SMT line logistics and eliminates moisture-related popcorning risk during standard lead-free reflow profiles.
How is polarity indicated on the S12GC R7G package?
Polarity on the S12GC R7G is indicated by a visible cathode band printed on the DO-214AB (SMC) molded case - the banded end corresponds to the cathode terminal (Lead 2). This marking aligns with industry-standard diode orientation and must be verified during placement to prevent reverse-bias failure in circuit operation.
What is the typical junction capacitance of the S12GC R7G and where is it measured?
The S12GC R7G has a typical junction capacitance (CJ) of 78 pF, measured at 1 MHz and 4.0 V reverse bias (VR) per the manufacturer's electrical specifications table. This value influences high-frequency switching noise and EMI filter design, particularly in PFC and resonant converter applications where diode capacitance interacts with snubber networks.
S12GC 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):
- 12A
- Voltage - Forward (Vf) (Max) @ If:
- 1.1 V @ 12 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 1 µA @ 400 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
S12GC R7G FAQ
1.How can I place an order for S12GC R7G through Aetrix?
Please submit a Request for Quotation (RFQ) for S12GC 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 S12GC R7G reliable?
The price and inventory of S12GC R7G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for S12GC R7G is usually 5 days.
3.What payment methods are accepted for S12GC R7G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for S12GC R7G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for S12GC R7G?
S12GC R7G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your S12GC 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 S12GC R7G?
For technical support, including S12GC R7G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your S12GC R7G requirements.
6.How does Aetrix verify that S12GC R7G is sourced from the original manufacturer or authorized distributors?
All S12GC 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 S12GC R7G meets industry standards.
7.What is the process for return or replacement of S12GC R7G?
All S12GC R7G units undergo pre-shipment inspection (PSI). If there is an issue with S12GC 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 S12GC R7G part is unused and in its original packaging.
Return procedure for S12GC R7G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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