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Taiwan Semiconductor Corporation S1A M2G
- Part No.:
- S1A M2G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
S1A M2G.pdf
- Description:
- DIODE GEN PURP 50V 1A DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:7,334
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Product details
Overview
S1A M2G from Taiwan Semiconductor is a 1 A, 50 V surface-mount silicon rectifier diode in DO-214AC (SMA) package, featuring glass-passivated junction, 1.1 V max forward voltage at 1 A, 1 µA max reverse leakage at 25°C, and 175°C maximum junction temperature - used in DC-DC converters and snubber circuits.
For engineers reviewing the S1A M2G datasheet, S1A M2G pinout, S1A M2G application, or S1A M2G equivalent, key selection criteria include repetitive peak reverse voltage (50 V), surge current rating (40 A), thermal resistance (27 °C/W junction-to-lead), and RoHS/halogen-free compliance for industrial power conversion designs.
Technical Context
This device is a single-die, standard recovery rectifier with unidirectional conduction and cathode-band polarity indication. Its 1500 ns reverse recovery time and 12 pF junction capacitance reflect trade-offs between switching speed and low forward loss.
Designed for surface-mount assembly per J-STD-002, it meets JESD201 Class 2 whisker resistance and UL 94V-0 flammability requirements. The DO-214AC (SMA) package supports automated placement and provides 0.060 g mass for thermal and mechanical stability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| IF (Avg) | 1 A continuous forward current - defines maximum steady-state power dissipation under heatsink-free operation |
| VRRM | 50 V repetitive peak reverse voltage - sets maximum blocking capability in DC-DC flyback or snubber applications |
| VF (max) | 1.1 V at 1 A, 25°C - determines conduction loss and thermal rise in high-duty-cycle rectification |
| IFSM | 40 A peak surge current (8.3 ms half-sine) - enables robustness against line transients and startup inductance kick |
| TJ max | +175°C junction temperature - allows operation in compact enclosures without active cooling |
| trr | 1500 ns reverse recovery time - limits usable frequency range to ≤100 kHz in switching converters |
| CJ | 12 pF at 1 MHz, 4 V - contributes to EMI generation and affects gate-drive coupling in adjacent MOSFETs |
Pinout & Package
DO-214AC (SMA) package: molded epoxy case with matte tin-plated leads, cathode band marking, and 0.060 g mass. Complies with UL 94V-0 and J-STD-020 Level 1 moisture sensitivity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal | Connected to lower-potential node (e.g., switch node in buck converter); requires PCB copper area for thermal relief |
| Cathode | Current exit terminal | Marked by band; ties to output rail or ground return path; critical for correct polarity in snubber networks |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Enables stable reverse leakage (<1 µA at 25°C) and long-term reliability under humidity exposure |
| DO-214AC (SMA) package | Supports automated pick-and-place and reflow soldering while delivering 27 °C/W junction-to-lead thermal resistance |
| J-STD-020 Level 1 rating | Eliminates bake preconditioning before SMT assembly, reducing manufacturing cycle time and cost |
| RoHS & halogen-free | Meets IEC 61249-2-21 and EU RoHS Directive 2011/65/EU for environmentally compliant industrial production |
Applications
| DC-DC Converter | Snubber Network |
|---|---|
Use Scenario: Output rectification in isolated flyback or forward converters operating at ≤100 kHz. IC Role / Device Role / Timing Role: Unidirectional current valve converting transformer secondary AC to regulated DC output. Use Value: 1.1 V VF minimizes conduction loss at 1 A load; 50 V VRRM matches typical 36–48 V output designs. | Use Scenario: Voltage clamping across switching MOSFETs in motor drives or SMPS. IC Role / Device Role / Timing Role: Transient energy sink during turn-off, absorbing inductive kickback via controlled avalanche. Use Value: 40 A IFSM withstands repeated 8.3 ms surges; 1500 ns trr ensures predictable clamp timing. |
| Lighting Driver | Switching Inverter |
Use Scenario: Secondary-side rectification in LED driver IC-based constant-current supplies. IC Role / Device Role / Timing Role: High-efficiency AC-to-DC conversion stage feeding constant-current regulator ICs. Use Value: Low 1 µA IR at 25°C prevents standby power drain; DO-214AC footprint fits compact LED module layouts. | Use Scenario: Freewheeling path in H-bridge inverters for HVAC blowers or small appliances. IC Role / Device Role / Timing Role: Bidirectional current path during dead-time commutation, preventing shoot-through. Use Value: 175°C TJ max supports operation near heat-generating IGBTs; 0.060 g mass avoids mechanical resonance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ON Semiconductor M1A | VRRM = 50 V, VF = 1.1 V max, same DO-214AC package, but IFSM = 30 A (vs. 40 A) | Limited surge margin in high-inductance snubbers | Prefer S1A M2G where 40 A IFSM is required for reliability under transient stress |
| Vishay 1N4001-T | VRRM = 50 V, VF = 1.1 V max, axial DO-41 package, not surface-mountable | Requires through-hole PCB layout and manual assembly | Select S1A M2G for automated SMT production and space-constrained board designs |
Compared with M1A and 1N4001-T, the S1A M2G delivers superior surge robustness in SMT form factor and eliminates through-hole assembly steps - critical for high-volume industrial power modules requiring thermal and layout consistency.
Availability
S1A M2G is available at Aetrix Electronics and suitable for DC-DC converters, snubber networks, lighting drivers, and switching inverters requiring stable component supply, consistent parametric performance, and full RoHS/halogen-free compliance.
Supply support for S1A M2G 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 industrial and consumer markets since 1979.
The S1A–S1M series targets cost-sensitive, high-reliability power rectification in surface-mount power supplies - optimized for manufacturability, thermal performance, and regulatory compliance in mainstream industrial applications.
FAQ
What is the maximum repetitive peak reverse voltage of the S1A M2G?
The S1A M2G has a maximum repetitive peak reverse voltage (VRRM) of 50 V. This rating defines the highest reverse-biased voltage the device can block continuously without breakdown. It is verified per Taiwan Semiconductor's S2102 specification sheet and applies under standard test conditions (TA = 25°C). Exceeding 50 V risks irreversible avalanche failure in the S1A M2G.
Does the S1A M2G support automated surface-mount assembly?
Yes, the S1A M2G supports automated surface-mount assembly. Its DO-214AC (SMA) package is designed for pick-and-place machines and reflow soldering per J-STD-002. With J-STD-020 Level 1 moisture sensitivity, the S1A M2G requires no pre-bake, enabling direct use from sealed tape-and-reel packaging in high-throughput SMT lines.
What is the forward voltage drop of the S1A M2G at rated current?
The S1A M2G exhibits a maximum forward voltage drop (VF) of 1.1 V at 1 A forward current and 25°C junction temperature. This value is measured under pulsed conditions (PW = 0.3 ms) and represents worst-case conduction loss. At higher temperatures or currents, VF may increase slightly, but remains within design margins for 1 A DC applications using the S1A M2G.
Is the S1A M2G RoHS and halogen-free compliant?
Yes, the S1A M2G is fully RoHS compliant per EU Directive 2011/65/EU and halogen-free per IEC 61249-2-21. Taiwan Semiconductor confirms this in the S2102 datasheet, and the device carries appropriate markings on its cathode band. These certifications apply to the entire S1A M2G unit, including molding compound and matte tin-plated leads.
What is the thermal resistance from junction to lead for the S1A M2G?
The junction-to-lead thermal resistance (RθJL) of the S1A M2G is 27 °C/W, as specified in the Thermal Performance section of the S2102 datasheet. This parameter enables accurate calculation of junction temperature rise above lead temperature under conduction loss, supporting thermal design validation without heatsinks for 1 A operation in the S1A M2G.
S1A M2G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- DO-214AC, SMA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 50 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):
- 1.5 µs
- Current - Reverse Leakage @ Vr:
- 1 µA @ 50 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
S1A M2G FAQ
1.How can I place an order for S1A M2G through Aetrix?
Please submit a Request for Quotation (RFQ) for S1A M2G 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 S1A M2G reliable?
The price and inventory of S1A M2G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for S1A M2G is usually 5 days.
3.What payment methods are accepted for S1A M2G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for S1A M2G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for S1A M2G?
S1A M2G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your S1A M2G 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 S1A M2G?
For technical support, including S1A M2G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your S1A M2G requirements.
6.How does Aetrix verify that S1A M2G is sourced from the original manufacturer or authorized distributors?
All S1A M2G 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 S1A M2G meets industry standards.
7.What is the process for return or replacement of S1A M2G?
All S1A M2G units undergo pre-shipment inspection (PSI). If there is an issue with S1A M2G, 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 S1A M2G part is unused and in its original packaging.
Return procedure for S1A M2G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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