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Taiwan Semiconductor Corporation S12MCHM6G
- Part No.:
- S12MCHM6G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
S12MCHM6G.pdf
- Description:
- DIODE GEN PURP 12A DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:2,831
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Product details
Overview
S12MCHM6G from Taiwan Semiconductor is a 12A, 1000V surface-mount silicon rectifier diode in DO-214AB (SMC) package, featuring glass-passivated junction, 1.1V max forward voltage at 12A, 300A peak surge capability, and J-STD-020 Level 1 moisture sensitivity - used in high-efficiency AC/DC converters and industrial SMPS front-ends.
For engineers reviewing the S12MCHM6G datasheet, S12MCHM6G pinout, S12MCHM6G application, or S12MCHM6G equivalent, key selection factors include its 1000V VRRM, 9°C/W junction-to-lead thermal resistance, 78pF junction capacitance at 4V, RoHS/halogen-free compliance, and suitability for automated SMT assembly in high-reliability power conversion designs.
Technical Context
This single-die standard recovery rectifier operates with a maximum junction temperature of 150°C and supports continuous forward current up to 12A at case temperature ≤75°C. Its 1000V repetitive peak reverse voltage enables use in 800V-class DC bus applications without derating.
The device exhibits low leakage (≤1µA at 25°C, ≤250µA at 125°C), fast thermal response via low RθJL (9°C/W), and robust surge tolerance (300A, 8.3ms half-sine) - critical for handling line transients in offline switchers and LED drivers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 1000 V - supports direct rectification of 700V RMS AC inputs with safety margin |
| IF | 12 A - rated average forward current at TC = 75°C, suitable for 150W–200W power stages |
| IFSM | 300 A - withstands 8.3ms line surges per IEC 61000-4-5 without failure |
| VF | ≤1.1 V @ 12A, 25°C - minimizes conduction loss in high-current output rectification |
| RθJL | 9 °C/W - enables efficient heat transfer to PCB copper, reducing thermal pad area requirements |
| CJ | 78 pF @ 1MHz, 4V - limits high-frequency switching noise in quasi-resonant topologies |
Pinout & Package
DO-214AB (SMC) surface-mount package with cathode band marking; matte tin-plated leads compliant with J-STD-002 solderability and JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Input terminal for AC or positive-side rectification | Connected to transformer secondary or bridge input; handles full 12A forward current path |
| Cathode | Output terminal for DC output rail | Marked by visible band; delivers filtered DC to bulk capacitor with minimal VF drop |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Ensures long-term reliability under humid environments and repeated thermal cycling |
| Moisture sensitivity level 1 | Eliminates need for baking prior to reflow, reducing manufacturing overhead |
| UL 94V-0 molding compound | Meets flame-retardancy requirements for enclosed power supplies and lighting fixtures |
| RoHS + halogen-free | Complies with IEC 61249-2-21 and global environmental directives for export markets |
Applications
| Industrial SMPS | LED Driver Power Stage |
|---|---|
Use Scenario: High-efficiency 200W open-frame power supply for factory automation controllers. IC Role / Device Role / Timing Role: Output rectifier in asymmetric half-bridge topology, converting 400V DC bus to 24V/12A output. Use Value: 1000V VRRM provides margin against reflected spikes; 9°C/W RθJL allows direct PCB heatsinking without external heatsink. | Use Scenario: Constant-current LED driver for high-bay warehouse lighting (120W, 350mA × 340V). IC Role / Device Role / Timing Role: Bulk rectifier in flyback PFC stage, handling 100–277V AC input after EMI filter. Use Value: 300A IFSM absorbs inrush during cold-start; low 1.1V VF reduces conduction loss at full load. |
| AC/DC Adapter | Telecom Power Shelf |
Use Scenario: Universal-input 90–264V AC adapter for PoE++ network switches (60W). IC Role / Device Role / Timing Role: Primary-side rectifier feeding active clamp forward controller. Use Value: DO-214AB footprint enables compact layout; Level 1 MSL supports standard SMT lines without dry-pack handling. | Use Scenario: Redundant 48V DC distribution module in telecom central office rack. IC Role / Device Role / Timing Role: OR-ing diode in hot-swap power path, blocking reverse current during module insertion. Use Value: 250µA max IR at 125°C ensures low standby leakage; UL 94V-0 compound meets telecom fire safety standards. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-voltage rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH1210S | 12A, 1000V; faster recovery (trr = 65ns vs. ~200ns), higher VF (1.3V) | Better suited for high-frequency PFC; less optimal for low-loss linear regulation stages | Prefer S12MCHM6G where low conduction loss dominates over switching speed |
| VS-12EWH10 | 12A, 1000V; same DO-214AB package; slightly higher IFSM (350A), similar VF (1.15V) | Higher surge rating beneficial in utility-grade metering; identical thermal performance | Choose VS-12EWH10 only if enhanced transient immunity is explicitly required |
Compared with STTH1210S and VS-12EWH10, the S12MCHM6G offers the lowest forward voltage among 12A/1000V SMC rectifiers, delivering superior efficiency in thermally constrained 24V/48V output stages while maintaining industry-standard surge and thermal specs.
Availability
S12MCHM6G is available at Aetrix Electronics and suitable for industrial SMPS, LED driver power stages, AC/DC adapters, and telecom power shelf designs requiring stable component supply, long-lifecycle support, and full traceability.
Supply support for S12MCHM6G 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 electronics and automotive markets since 1979.
The S12GC–S12MC family targets cost-sensitive, high-reliability AC/DC front-end rectification, emphasizing ruggedness, manufacturability, and compliance across consumer, industrial, and lighting applications.
FAQ
What is the maximum junction temperature rating for S12MCHM6G?
The S12MCHM6G has a maximum junction temperature (TJ) of +150°C, validated per absolute maximum ratings in the official Taiwan Semiconductor datasheet D2102. This rating applies under continuous operation with proper thermal management - specifically, when case temperature does not exceed 75°C at 12A forward current. Derating curves in the datasheet confirm usable current down to 0A at 150°C ambient.
Is S12MCHM6G compatible with lead-free reflow profiles?
Yes, the S12MCHM6G uses matte tin-plated leads compliant with J-STD-002 and supports standard lead-free reflow profiles (peak 260°C, 10s max). Its Level 1 moisture sensitivity eliminates pre-bake requirements, and the UL 94V-0 molding compound remains stable through multiple reflow cycles without delamination or cracking.
Does S12MCHM6G have a specified reverse recovery time (trr)?
No, the official Taiwan Semiconductor documentation for S12MCHM6G does not specify reverse recovery time (trr). It is characterized as a standard recovery rectifier - confirmed by typical reverse recovery behavior in Figure 3 (Reverse Characteristics) and absence of trr in Electrical Specifications tables. For fast-recovery alternatives, refer to STTH1210S or similar devices.
What marking code appears on the S12MCHM6G device body?
The S12MCHM6G is marked "S12MC" on the device body, consistent with Taiwan Semiconductor's ordering code convention where "MC" denotes the 1000V variant. Additional markings include green compound indicator (G), date code (YW), and factory code (F), as shown in the Marking Diagram on page 4 of datasheet D2102.
Can S12MCHM6G be used in parallel configurations for higher current?
Parallel operation of S12MCHM6G devices is not recommended without external balancing components. The datasheet does not specify matching tolerances for VF or thermal coefficients, and inherent parameter variation may cause current imbalance. For >12A applications, select a higher-rated single device (e.g., 20A rectifier) or implement forced-air cooling with individual thermal monitoring for each S12MCHM6G.
S12MCHM6G 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):
- 1000 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 @ 1000 V
- Capacitance @ Vr, F:
- 78pF @ 4V, 1MHz
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
- Operating Temperature - Junction:
- -55°C ~ 150°C
S12MCHM6G FAQ
1.How can I place an order for S12MCHM6G through Aetrix?
Please submit a Request for Quotation (RFQ) for S12MCHM6G 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 S12MCHM6G reliable?
The price and inventory of S12MCHM6G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for S12MCHM6G is usually 5 days.
3.What payment methods are accepted for S12MCHM6G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for S12MCHM6G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for S12MCHM6G?
S12MCHM6G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your S12MCHM6G 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 S12MCHM6G?
For technical support, including S12MCHM6G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your S12MCHM6G requirements.
6.How does Aetrix verify that S12MCHM6G is sourced from the original manufacturer or authorized distributors?
All S12MCHM6G 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 S12MCHM6G meets industry standards.
7.What is the process for return or replacement of S12MCHM6G?
All S12MCHM6G units undergo pre-shipment inspection (PSI). If there is an issue with S12MCHM6G, 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 S12MCHM6G part is unused and in its original packaging.
Return procedure for S12MCHM6G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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