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Taiwan Semiconductor Corporation S2GAH
- Part No.:
- S2GAH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
S2GAH.pdf
- Description:
- 1.5A, 400V, STANDARD RECOVERY RE
- Quantity:
- Payment:
- Shipping:
Inventory:15,000
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Product details
Overview
S2GAH from Taiwan Semiconductor is a 1.5A, 400V surface-mount silicon rectifier diode in DO-214AC (SMA) package, featuring glass-passivated junction, AEC-Q101 qualification, 50A peak surge current rating, and 1.1V max forward voltage at 1.5A. It serves as a primary AC/DC or DC/DC power conversion element in automotive lighting and snubber circuits.
For engineers reviewing the S2GAH datasheet, S2GAH pinout, S2GAH application, or S2GAH equivalent, key selection criteria include its 400V repetitive peak reverse voltage, 150°C maximum junction temperature, low 5µA reverse leakage at 25°C, and suitability for automated SMT assembly in high-reliability automotive power supplies.
Technical Context
The S2GAH is a single-die, standard recovery rectifier with 1500ns reverse recovery time under IF = 0.5A / IR = 1.0A test conditions and 30pF junction capacitance at 1MHz and 4V reverse bias. Its thermal design supports 16°C/W junction-to-lead resistance, enabling efficient heat transfer to PCB copper in compact layouts.
Designed for unidirectional conduction in medium-voltage DC power rails, the device operates across –55°C to +150°C ambient range and meets J-STD-020 moisture sensitivity level 1, ensuring robust reflow compatibility without baking requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 400 V - Maximum repetitive reverse voltage the diode blocks reliably in circuit |
| IF | 1.5 A - Continuous average forward current rating at TA = 25°C |
| IFSM | 50 A - Peak non-repetitive surge current capability (8.3ms half-sine) |
| VF (max) | 1.1 V @ 1.5A - Forward voltage drop determining conduction loss and thermal load |
| IR (max) | 5 µA @ 25°C - Reverse leakage current affecting standby power and isolation integrity |
| trr | 1500 ns - Reverse recovery time influencing switching losses in higher-frequency converters |
| RθJL | 16 °C/W - Junction-to-lead thermal resistance critical for PCB copper pad sizing |
Pinout & Package
DO-214AC (SMA) surface-mount package with cathode-indicating band; matte tin-plated leads compliant with J-STD-002 solderability and JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential side of rectified path; requires adequate copper pour for thermal dissipation |
| Cathode | Forward current exit / reverse voltage reference | Marked by visible band; ties to output rail or snubber node; defines polarity-sensitive placement |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per stress test plan |
| Glass-passivated junction | Enhances long-term stability and moisture resistance versus epoxy-passivated alternatives |
| Moisture sensitivity level 1 | Enables direct use from dry pack without baking-reducing SMT line downtime and handling cost |
| RoHS and halogen-free | Complies with IEC 61249-2-21 and EU RoHS Directive for environmentally regulated end markets |
| Low VF and high IFSM | Supports efficient 1.5A operation while surviving transient overloads common in automotive load-dump events |
Applications
| Automotive LED Lighting Power Supply | DC-DC Converter Output Rectification |
|---|---|
Use Scenario: Rectifying switched transformer output in 12V–48V automotive LED headlamp drivers. IC Role / Device Role / Timing Role: Primary output rectifier conducting continuous 1.5A DC current with minimal conduction loss. Use Value: 1.1V VF ensures <1.7W conduction loss at full load, reducing thermal stress on compact heatsinks. | Use Scenario: Secondary-side rectification in isolated flyback or forward converters powering infotainment systems. IC Role / Device Role / Timing Role: Unidirectional current valve shaping DC output waveform after transformer demagnetization. Use Value: 400V VRRM provides 2× safety margin over typical 200V reflected output transients. |
| Snubber Network Clamp Diode | General-Purpose AC Line Rectification |
Use Scenario: Clamping voltage spikes across MOSFET drains in buck or boost converters. IC Role / Device Role / Timing Role: Fast turn-on clamp limiting dv/dt-induced ringing during switch-off transitions. Use Value: 1500ns trr balances snubbing effectiveness against added recovery loss in <100kHz designs. | Use Scenario: Bridge or half-wave rectification in industrial control power supplies. IC Role / Device Role / Timing Role: Standard recovery rectifier converting 50/60Hz AC mains to unregulated DC bus. Use Value: 50A IFSM withstands cold-start inrush surges without degradation over 10-year service life. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH1L06S | 600V VRRM, 1.0A IF, 75ns trr, TO-277 package | Higher voltage rating but lower current and faster recovery; requires different footprint | Prefer where higher blocking voltage and faster switching are needed, not for direct replacement |
| ON Semi MUR160 | 600V VRRM, 1.0A IF, 75ns trr, DO-41 through-hole | Through-hole mounting, lower current, ultrafast recovery; incompatible with SMT lines | Select when legacy through-hole assembly or ultrafast recovery dominates over current rating |
Compared with STTH1L06S and MUR160, the S2GAH offers optimal balance of 1.5A current handling, 400V blocking, and SMA packaging for automotive SMT production-neither ultrafast nor high-voltage focused, but purpose-built for cost-sensitive, thermally constrained rectification.
Availability
S2GAH is available at Aetrix Electronics and suitable for automotive LED lighting, DC-DC converter output stages, and snubber networks requiring stable component supply and AEC-Q101 compliance.
Supply support for S2GAH 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 automotive, industrial, and consumer markets since 1979.
The S2GAH belongs to TSC's AEC-Q101-qualified surface-mount rectifier family, engineered for reliable power conversion in harsh-environment automotive subsystems where thermal robustness and process consistency are critical.
FAQ
What is the maximum junction temperature rating for the S2GAH?
The S2GAH has a maximum junction temperature (TJ) rating of +150°C, verified per absolute maximum ratings table in the official TSC datasheet Version A2102. This allows operation in under-hood automotive environments where ambient temperatures exceed 105°C. Derating curves confirm usable current capacity down to 0.8A at 125°C case temperature. The S2GAH must be mounted on sufficient copper area to maintain TJ ≤ 150°C under worst-case load and ambient conditions.
Is the S2GAH suitable for use in automotive lighting applications?
Yes, the S2GAH is explicitly qualified to AEC-Q101 and listed in the Applications section of its datasheet for "Automotive application" and "Car lighting." Its glass-passivated junction, moisture sensitivity level 1, and 150°C TJ rating meet automotive reliability requirements. The S2GAH delivers stable 1.5A rectification with low VF in LED driver power stages, and its DO-214AC package supports automated placement in high-volume lighting module production.
What does the marking code 'S2GA' indicate on the S2GAH device body?
The marking code 'S2GA' on the S2GAH corresponds directly to its part number prefix and denotes the 400V VRRM variant within the S2xAH family, as confirmed in the Absolute Maximum Ratings table. 'S2' identifies the series, 'G' specifies 400V rating (per voltage mapping: A=50V, B=100V, D=200V, G=400V, J=600V, K=800V, M=1000V), and 'A' indicates standard configuration. The full orderable part remains S2GAH.
How does the thermal performance of the S2GAH compare to similar SMA-packaged rectifiers?
The S2GAH specifies RθJL = 16°C/W and RθJA = 53°C/W, measured per JEDEC standards. This matches industry benchmarks for DO-214AC rectifiers with optimized leadframe design. Compared to generic SMA rectifiers with RθJA > 65°C/W, the S2GAH achieves lower junction temperature rise under identical 1.5A load-enabling smaller PCB copper areas or higher ambient operation. Thermal data is validated in TSC's Version A2102 datasheet.
Can the S2GAH replace the S2DAH in a 200V design without modification?
No-the S2GAH (400V VRRM) and S2DAH (200V VRRM) share identical package, current rating, and thermal specs, but substituting S2GAH for S2DAH introduces unnecessary voltage overhead and may affect layout parasitics due to higher junction capacitance (30pF vs. ~25pF in lower-voltage variants). While electrically safe, it offers no benefit and increases cost. The S2GAH is not a drop-in replacement for S2DAH unless the design specifically requires 400V blocking margin.
S2GAH 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):
- 1.5A
- Voltage - Forward (Vf) (Max) @ If:
- 1.1 V @ 1.5 A
- Speed:
- Standard Recovery >500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 1.5 µs
- Current - Reverse Leakage @ Vr:
- 5 µA @ 400 V
- Capacitance @ Vr, F:
- 30pF @ 4V, 1MHz
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
- Operating Temperature - Junction:
- -55°C ~ 150°C
S2GAH FAQ
1.How can I place an order for S2GAH through Aetrix?
Please submit a Request for Quotation (RFQ) for S2GAH 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 S2GAH reliable?
The price and inventory of S2GAH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for S2GAH is usually 5 days.
3.What payment methods are accepted for S2GAH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for S2GAH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for S2GAH?
S2GAH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your S2GAH 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 S2GAH?
For technical support, including S2GAH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your S2GAH requirements.
6.How does Aetrix verify that S2GAH is sourced from the original manufacturer or authorized distributors?
All S2GAH 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 S2GAH meets industry standards.
7.What is the process for return or replacement of S2GAH?
All S2GAH units undergo pre-shipment inspection (PSI). If there is an issue with S2GAH, 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 S2GAH part is unused and in its original packaging.
Return procedure for S2GAH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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