My Inquiry
My Account
Taiwan Semiconductor Corporation S12GCHR7G
- Part No.:
- S12GCHR7G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
S12GCHR7G.pdf
- Description:
- DIODE GEN PURP 400V 12A DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:5,419
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
S12GCHR7G from Taiwan Semiconductor is a 12A, 400V glass-passivated surface-mount rectifier in DO-214AB (SMC) package, featuring low forward voltage drop (≤1.1 V at 12 A), high surge capability (300 A IFSM), and junction temperature rating up to +150°C; it serves as the primary output rectifier in high-efficiency AC/DC adapters and offline SMPS.
For engineers reviewing the S12GCHR7G datasheet, S12GCHR7G pinout, S12GCHR7G application, or S12GCHR7G equivalent, key selection criteria include repetitive peak reverse voltage (400 V), 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 (3,000 pcs).
Technical Context
The S12GCHR7G is a single-die, standard recovery silicon rectifier optimized for continuous conduction mode in medium-power switching converters. Its glass-passivated junction ensures stable reverse leakage (<1 µA at 25°C, <250 µA at 125°C) and robust surge tolerance under 8.3 ms half-sine stress.
Thermal performance is defined by RθJL = 9°C/W and RθJA = 44°C/W, enabling reliable operation at full 12 A DC current with appropriate PCB copper area. The device uses matte tin-plated leads compliant with J-STD-002 solderability and JESD201 Class 2 whisker resistance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| IF (Continuous Forward Current) | 12 A - supports sustained output rectification in 100–200 W SMPS without forced air cooling |
| VRRM (Repetitive Peak Reverse Voltage) | 400 V - rated for universal-input (85–265 VAC) offline flyback and forward converters |
| IFSM (Peak Forward Surge Current) | 300 A - withstands cold-start inrush and line-transient surges per IEC 61000-4-5 |
| VF (Forward Voltage @ 12 A, 25°C) | ≤1.1 V - reduces conduction loss to ≤13.2 W, critical for thermal management in compact adapters |
| TJ max (Maximum Junction Temperature) | +150°C - enables operation in sealed enclosures or high-ambient industrial lighting fixtures |
| RθJL (Junction-to-Lead Thermal Resistance) | 9°C/W - allows direct heat transfer to PCB copper pads, supporting >80% derating at 100°C ambient |
| CJ (Junction Capacitance) | 78 pF @ 4 V - limits switching noise and EMI in 65–130 kHz SMPS designs |
Pinout & Package
Package: DO-214AB (SMC), surface-mount, cathode-indicated by band; dimensions per Taiwan Semiconductor drawing D2102; weight ≈0.270 g; UL 94V-0 molding compound; matte tin-plated leads.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Lead 1) | Input terminal for forward conduction path | Connected to transformer secondary or switch node; must handle full 12 A DC and 300 A surge |
| Cathode (Lead 2) | Output terminal for forward conduction path | Connected to output capacitor and load; polarity marked by visible band on case |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated chip junction | Ensures long-term stability of reverse leakage and breakdown voltage across temperature and humidity cycles |
| Low forward voltage drop (≤1.1 V) | Reduces power dissipation by ≥15% vs. comparable 12 A rectifiers with VF > 1.25 V |
| J-STD-020 Level 1 moisture sensitivity | Enables direct placement without baking; eliminates production delay and moisture-related popcorning risk |
| RoHS and halogen-free compliance | Fulfills EU Directive 2011/65/EU and IEC 61249-2-21, required for global commercial lighting and adapter certifications |
| High surge current rating (300 A) | Supports 100,000+ cold-start cycles in consumer power supplies without degradation |
Applications
| AC/DC Adapters | LED Lighting Drivers |
|---|---|
Use Scenario: 65 W universal-input wall adapter for laptops and monitors. IC Role / Device Role / Timing Role: Primary output rectifier converting high-frequency transformer secondary voltage to regulated DC bus. Use Value: 12 A rating and 400 V VRRM accommodate 265 VAC input with margin; 1.1 V VF minimizes heatsink size in space-constrained enclosures. | Use Scenario: Constant-current LED driver for outdoor street lighting (IP67-rated fixture). IC Role / Device Role / Timing Role: Output rectifier in isolated flyback stage delivering 350 mA @ 48 V to LED string. Use Value: +150°C TJ rating ensures reliability at 85°C ambient inside sealed housing; DO-214AB footprint simplifies automated assembly. |
| Industrial SMPS | DC-DC Converters |
Use Scenario: 150 W open-frame power supply for PLC I/O modules. IC Role / Device Role / Timing Role: Secondary-side rectifier in forward converter topology operating at 100 kHz. Use Value: 300 A IFSM handles repeated motor-start transients; RθJL = 9°C/W enables thermal coupling to internal ground plane. | Use Scenario: Isolated 12 V → 5 V/3.3 V DC-DC module for telecom baseband boards. IC Role / Device Role / Timing Role: Synchronous rectifier replacement in secondary-side synchronous rectification design. Use Value: 78 pF junction capacitance reduces switching node ringing vs. higher-CJ alternatives, easing EMI filter design. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Vishay VS-12EWH04-M3 | Same DO-214AB package, 12 A/400 V, VF = 1.05 V typ, RθJL = 8.5°C/W | Lower VF improves efficiency in thermally constrained designs; slightly tighter VF distribution | Preferred when <0.05 V VF reduction justifies cost premium and sourcing flexibility |
| ON Semiconductor MUR1240CT | TO-220AC package (not SMD), dual common-cathode configuration, 12 A/400 V, VF = 1.25 V max | Requires through-hole assembly and larger board area; higher VF increases conduction loss | Only suitable if legacy TO-220 layout exists and rework to SMD is not feasible |
Compared with VS-12EWH04-M3, S12GCHR7G offers identical voltage/current ratings but slightly higher VF and thermal resistance; versus MUR1240CT, it enables automated SMT assembly and lower profile, though with different mechanical mounting and thermal interface requirements.
Availability
S12GCHR7G is available at Aetrix Electronics and suitable for AC/DC adapters, LED lighting drivers, and industrial SMPS requiring stable component supply, J-STD-020 Level 1 handling, and RoHS-compliant manufacturing.
Supply support for S12GCHR7G 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 industrial markets since 1979.
The S12GC–S12MC series was designed specifically for high-reliability, medium-current surface-mount rectification in cost-sensitive, high-volume power conversion systems where thermal robustness and process compatibility are critical.
FAQ
What is the maximum junction temperature rating for S12GCHR7G?
The S12GCHR7G has a maximum junction temperature (TJ) rating of +150°C, verified per absolute maximum ratings table in Taiwan Semiconductor's D2102 datasheet. This allows uninterrupted operation in sealed LED drivers or industrial power supplies where ambient temperatures reach 85–100°C, provided thermal design meets RθJL = 9°C/W requirements. Derating begins above 125°C ambient per Fig.1 forward current curve.
Is S12GCHR7G suitable for automated SMT assembly without pre-baking?
Yes, S12GCHR7G is rated J-STD-020 Level 1 for moisture sensitivity, meaning it can be placed directly onto PCBs using standard reflow profiles without baking or dry-packing. This eliminates production delays and avoids moisture-induced delamination or popcorning during soldering-critical for high-throughput adapter and lighting manufacturing lines.
What does the 'G' in S12GCHR7G indicate?
The 'G' in S12GCHR7G denotes the 400 V repetitive peak reverse voltage (VRRM) rating within the S12GC–S12MC family. Per Taiwan Semiconductor's ordering code table, 'G' corresponds to 400 V, 'J' to 600 V, 'K' to 800 V, and 'M' to 1000 V. The 'HR7G' suffix indicates tape-and-reel packaging (3,000 pcs) and green compound (halogen-free) per IEC 61249-2-21.
How does the forward voltage of S12GCHR7G compare to similar 12 A rectifiers?
S12GCHR7G specifies a maximum forward voltage (VF) of 1.1 V at 12 A and 25°C, measured under pulse conditions (PW = 0.3 ms). This is competitive with industry-standard 12 A SMC rectifiers-e.g., slightly higher than Vishay VS-12EWH04-M3 (1.05 V typ) but lower than ON Semi MUR1240CT (1.25 V max)-making it well-suited for efficiency-critical adapters where thermal headroom is limited.
Does S12GCHR7G have halogen-free and RoHS compliance documentation?
Yes, S12GCHR7G is explicitly certified halogen-free per IEC 61249-2-21 and RoHS compliant per EU Directive 2011/65/EU, as stated in the "Features" section of Taiwan Semiconductor's D2102 datasheet. Certificate of Compliance and material declarations are available upon request from Aetrix Electronics for audit-ready design documentation and regulatory submissions.
S12GCHR7G 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:
- Standard Recovery >500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 1 µA @ 400 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
S12GCHR7G FAQ
1.How can I place an order for S12GCHR7G through Aetrix?
Please submit a Request for Quotation (RFQ) for S12GCHR7G 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 S12GCHR7G reliable?
The price and inventory of S12GCHR7G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for S12GCHR7G is usually 5 days.
3.What payment methods are accepted for S12GCHR7G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for S12GCHR7G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for S12GCHR7G?
S12GCHR7G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your S12GCHR7G 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 S12GCHR7G?
For technical support, including S12GCHR7G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your S12GCHR7G requirements.
6.How does Aetrix verify that S12GCHR7G is sourced from the original manufacturer or authorized distributors?
All S12GCHR7G 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 S12GCHR7G meets industry standards.
7.What is the process for return or replacement of S12GCHR7G?
All S12GCHR7G units undergo pre-shipment inspection (PSI). If there is an issue with S12GCHR7G, 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 S12GCHR7G part is unused and in its original packaging.
Return procedure for S12GCHR7G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
S12GCHR7G Tags
-
1N4448X-TP
Micro Commercial Co
-
1N4148WX-TP
Micro Commercial Co
-
1N4148TR
onsemi
-
MMSD4148T1G
onsemi
-
MMBD914LT3G
onsemi
-
BAS16HT1G
onsemi
-
1N914BWT
onsemi
-
BAS21LT1G
onsemi
-
LL4148
onsemi
-
BAS16LT1G
onsemi
-
MMSD914T1G
onsemi
-
BAV21W-7-F
Diodes Incorporated
Tech Hub
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
