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Taiwan Semiconductor Corporation S1G-K
- Part No.:
- S1G-K
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
S1G-K.pdf
- Description:
- 1A, 400V, STANDARD RECTIFIER
- Quantity:
- Payment:
- Shipping:
Inventory:4,869
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Product details
Overview
S1G-K from Taiwan Semiconductor is a 1A, 400V standard surface-mount silicon rectifier diode in DO-214AC (SMA) package, featuring glass-passivated junction, 1.1V max forward voltage at 1A/25°C, 30A peak surge current, and 150°C maximum junction temperature - used in DC-DC converters and switching-mode power supplies.
For engineers reviewing the S1G-K datasheet, S1G-K pinout, S1G-K application, or S1G-K equivalent, key selection criteria include repetitive peak reverse voltage (400V), thermal resistance (RθJL = 30°C/W), reverse recovery time (1500 ns), moisture sensitivity level (J-STD-020 Level 1), and RoHS/halogen-free compliance.
Technical Context
The S1G-K is a single-die, unidirectional standard recovery rectifier optimized for general-purpose AC-to-DC and DC-DC conversion where fast recovery is not required. Its 1500 ns reverse recovery time and 12 pF junction capacitance reflect trade-offs favoring low conduction loss over switching speed.
Designed for surface-mount assembly with matte tin-plated leads compliant to J-STD-002, it operates across –55°C to +150°C junction range and meets UL 94V-0 flammability and JESD201 Class 1A whisker resistance requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 400 V - Maximum repetitive reverse voltage before breakdown; defines safe operating limit in bridge or flyback snubber circuits. |
| IF | 1 A - Continuous average forward current; determines heatsinking needs in linear-regulator input stages. |
| IFSM | 30 A - Non-repetitive surge rating for 8.3 ms half-sine; supports inrush current handling in offline SMPS inputs. |
| VF (max) | 1.1 V @ 1 A, 25°C - Forward drop directly impacts conduction loss and thermal rise in high-duty-cycle rectification. |
| trr | 1500 ns - Reverse recovery time affects switching losses in 20–100 kHz converters; not suitable for >200 kHz operation. |
| RθJL | 30 °C/W - Junction-to-lead thermal resistance enables direct PCB copper pour cooling without external heatsink in ≤1W dissipation designs. |
| CJ | 12 pF @ 1 MHz, 4 V - Junction capacitance influences EMI filtering design and high-frequency noise coupling in gate-drive paths. |
Pinout & Package
Package: DO-214AC (SMA), surface-mount, cathode-indicated by band, matte tin-plated leads, 0.060 g typical weight.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to AC input or transformer secondary; must withstand full surge current and reverse voltage stress. |
| Cathode | Forward current exit / polarity reference | Marked by band; ties to output rail or ground return; carries full load current and defines circuit polarity orientation. |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Enables stable long-term reliability under humidity and thermal cycling; eliminates need for conformal coating in industrial environments. |
| J-STD-020 Level 1 moisture sensitivity | Allows unlimited floor life before reflow; eliminates bake requirement and simplifies SMT line logistics. |
| UL 94V-0 molding compound | Meets flame-retardancy requirements for end equipment safety certifications including UL/IEC 62368-1. |
| JESD201 Class 1A whisker resistance | Prevents tin whisker growth under thermal stress, critical for automotive and telecom infrastructure applications. |
| RoHS and halogen-free (IEC 61249-2-21) | Complies with global environmental regulations and enables use in green electronics manufacturing and export markets. |
Applications
| DC-DC Converter Input Stage | Switching Mode Inverter Output Rectification |
|---|---|
Use Scenario: Rectifying high-frequency transformer output in isolated 48 V to 12 V buck-derived DC-DC modules. IC Role / Device Role / Timing Role: Standard recovery rectifier conducting during positive half-cycles; handles continuous 1 A load with minimal conduction loss. Use Value: 1.1 V VF limits power loss to ≤1.1 W at full load, reducing thermal burden on compact PCB layouts. | Use Scenario: Output-side freewheeling and rectification in three-phase motor drive inverters operating at 16 kHz PWM. IC Role / Device Role / Timing Role: Unidirectional current path clamping inductive kickback; relies on 30 A IFSM to absorb transient energy. Use Value: 400 V VRRM provides 2× margin over 200 V bus peaks, ensuring robustness against voltage spikes in industrial drives. |
| General-Purpose AC Adapter Front-End | Offline SMPS Input Bridge Diode |
Use Scenario: Single-diode half-wave rectification in low-cost wall adapters for IoT sensors and LED lighting. IC Role / Device Role / Timing Role: Low-cost, high-reliability rectifier replacing legacy axial-leaded devices in automated SMT lines. Use Value: DO-214AC footprint enables direct replacement of SMA-packaged predecessors without layout change or requalification. | Use Scenario: One leg of a four-diode bridge rectifier converting 230 VAC mains to ~325 VDC in open-frame power supplies. IC Role / Device Role / Timing Role: High-surge-capable rectifier handling cold-start inrush and line transients up to 30 A. Use Value: RθJL = 30°C/W allows direct thermal coupling to copper pour, eliminating discrete heatsinks in <5 W auxiliary rails. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar standard rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ON Semiconductor MUR140 | Ultrafast recovery (trr = 50 ns), higher VF (1.3 V), same 1 A/400 V rating and DO-214AC package. | Better suited for higher-frequency SMPS (>100 kHz); increased conduction loss reduces efficiency in low-frequency, high-duty-cycle use. | Select when faster switching outweighs conduction loss penalty; verify layout compatibility with identical footprint. |
| Vishay VS-1N4007-M3/54 | Standard recovery (trr ≈ 30 µs), 1 A/1000 V, DO-41 through-hole; no SMT compatibility. | Only viable for prototyping or legacy through-hole designs; requires PCB redesign for SMT production. | Use only for hand-soldered evaluation or repair; not recommended for new SMT designs requiring automation. |
Compared with MUR140 and VS-1N4007-M3/54, the S1G-K delivers optimal balance of low VF, robust surge capability, and SMT manufacturability for cost-sensitive 50–100 kHz power conversion - without ultrafast trade-offs or through-hole constraints.
Availability
S1G-K is available at Aetrix Electronics and suitable for DC-DC converters, switching mode inverters, and general-purpose power supply designs requiring stable component supply, consistent parametric performance, and long-term industrial availability.
Supply support for S1G-K 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 S1G-K belongs to TSC's S1x-K standard rectifier family, engineered for high-volume, cost-optimized AC/DC front-end and DC-DC isolation applications where reliability, manufacturability, and regulatory compliance are prioritized over ultrafast switching.
FAQ
What is the maximum junction temperature rating for the S1G-K?
The S1G-K has a maximum junction temperature (TJ) of +150°C, with an operational range from –55°C to +150°C. This rating enables reliable operation in enclosed industrial enclosures and automotive under-hood auxiliary power modules where ambient temperatures exceed 85°C. Derating curves in the datasheet define allowable forward current reduction above 75°C ambient.
Does the S1G-K meet RoHS and halogen-free requirements?
Yes, the S1G-K is RoHS compliant and halogen-free per IEC 61249-2-21. The molding compound contains no brominated flame retardants or chlorine-based additives, and lead content is below 1000 ppm. These attributes support compliance with EU WEEE, China RoHS II, and Japan J-Moss directives for global market access.
What is the reverse recovery time (trr) of the S1G-K and how does it affect circuit design?
The S1G-K has a reverse recovery time of 1500 ns under specified test conditions (IF = 0.5 A, IR = 1.0 A, Irr = 0.25 A). This places it in the standard recovery category, making it unsuitable for high-frequency switch-mode topologies above 100 kHz but ideal for 20–60 kHz flyback or forward converters where low VF and surge robustness dominate design priorities.
Can the S1G-K be used as a direct replacement for the S1D-K or S1J-K in existing designs?
No - the S1G-K is not a direct replacement for S1D-K (200 V) or S1J-K (600 V) due to differing VRRM ratings. Substitution requires verification of reverse voltage margin in the target circuit. Using S1G-K in a 600 V design risks premature failure; using S1D-K in a 400 V design may violate safety derating rules. Always match VRRM to system peak reverse stress.
What packaging and reel configuration is available for the S1G-K?
The S1G-K is supplied in DO-214AC (SMA) package on 7,500-piece tape-and-reel format, compatible with standard 8 mm wide SMT feeders. The reel meets EIA-481-D standards, with leader/trailer lengths and orientation (cathode band facing outward) defined in TSC's packaging specification E2102. No bulk or ammo-pack options are offered.
S1G-K Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- DO-214AC, SMA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 400 V
- Current - Average Rectified (Io):
- 1A
- Voltage - Forward (Vf) (Max) @ If:
- 1.1 V @ 1 A
- Speed:
- Standard Recovery >500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 1 µA @ 200 V
- Capacitance @ Vr, F:
- 12pF @ 4V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
- Operating Temperature - Junction:
- -55°C ~ 175°C
S1G-K FAQ
1.How can I place an order for S1G-K through Aetrix?
Please submit a Request for Quotation (RFQ) for S1G-K 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 S1G-K reliable?
The price and inventory of S1G-K are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for S1G-K is usually 5 days.
3.What payment methods are accepted for S1G-K?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for S1G-K transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for S1G-K?
S1G-K orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your S1G-K 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 S1G-K?
For technical support, including S1G-K datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your S1G-K requirements.
6.How does Aetrix verify that S1G-K is sourced from the original manufacturer or authorized distributors?
All S1G-K 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 S1G-K meets industry standards.
7.What is the process for return or replacement of S1G-K?
All S1G-K units undergo pre-shipment inspection (PSI). If there is an issue with S1G-K, 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 S1G-K part is unused and in its original packaging.
Return procedure for S1G-K:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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