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Home > Products > Discrete Semiconductor Products > Diodes > Rectifiers > Single Diodes

Taiwan Semiconductor Corporation S2GA-T

Name: S2GA-T
Brand: Taiwan Semiconductor Corporation
SKU: S2GA-T
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: S2GA-T

Manufacturer:: Taiwan Semiconductor Corporation

Category:: Single Diodes

Package:: DO-214AC, SMA

Datasheet:: S2GA-T.pdf

Description:: 2A, 400V, STANDARD RECTIFIER

Quantity:: RFQ Add To RFQ list

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Inventory:2,637

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Product details

Overview

S2GA-T from Taiwan Semiconductor is a 2 A, 400 V standard surface-mount silicon rectifier diode in DO-214AC (SMA) package, featuring glass-passivated junction, low reverse leakage (≤5 µA at 25°C), and 50 A surge capability (8.3 ms). It is used in DC-DC converters and switching-mode power supplies where compact size and thermal reliability are required.

For engineers reviewing the S2GA-T datasheet, S2GA-T pinout, S2GA-T application, or S2GA-T equivalent, key selection criteria include repetitive peak reverse voltage (400 V), forward voltage drop (0.96 V max at 2 A/25°C), junction-to-lead thermal resistance (14 °C/W), and RoHS/halogen-free compliance for industrial power conversion designs.

Technical Context

The S2GA-T is a single-die, unidirectional standard recovery rectifier with cathode-band polarity marking. Its glass-passivated junction ensures stable reverse characteristics across -55°C to +150°C operating range and supports automated placement per J-STD-020 Level 1 moisture sensitivity.

Thermal performance is characterized on a 5 mm × 5 mm copper pad PCB: R_θJL = 14 °C/W enables efficient heat transfer to the PCB lead frame, while R_θJA = 86 °C/W reflects ambient-limited dissipation under standard test conditions.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	400 V - Maximum repetitive reverse voltage before breakdown; defines safe blocking capability in 400 V-rated power rails.
I_F	2 A - Continuous average forward current rating; determines steady-state power handling in rectification paths.
I_FSM (8.3 ms)	50 A - Non-repetitive surge current tolerance; supports inrush and transient overload in SMPS startup.
V_F @ 2 A, 25°C	0.96 V max - Forward voltage drop directly impacts conduction loss and thermal rise in high-duty-cycle operation.
I_R @ V_R, 25°C	5 µA max - Low reverse leakage preserves efficiency in high-impedance hold-up or sensing circuits.
T_J max	+150°C - Maximum junction temperature sets derating envelope for thermal design and reliability margin.
C_J	30 pF - Junction capacitance affects high-frequency switching noise and EMI in fast-switching topologies.

Pinout & Package

Package: DO-214AC (SMA), surface-mount, matte tin-plated leads, polarity indicated by cathode band. Weight: 0.060 g.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Forward current entry point	Connected to lower-potential side of AC input or transformer secondary; must withstand full surge current path.
Cathode	Forward current exit / reverse-blocking terminal	Marked by band; ties to output rail or filter capacitor; carries full load current and blocks reverse voltage up to 400 V.

Key Features

Feature	Design Value
Glass-passivated junction	Ensures long-term stability of reverse leakage and breakdown voltage under humidity and thermal cycling stress.
Moisture sensitivity level 1	Enables direct placement without baking; eliminates pre-reflow moisture mitigation steps in manufacturing.
UL 94V-0 molding compound	Meets flammability safety requirements for enclosed power supplies and industrial equipment enclosures.
JESD 201 Class 1 whisker resistance	Prevents tin whisker growth on leads, ensuring long-term solder joint integrity in high-reliability applications.
RoHS & halogen-free	Complies with IEC 61249-2-21 and EU RoHS directives for environmentally restricted substances.

Applications

DC-DC Converter	Switching Mode Inverter
Use Scenario: Secondary-side rectification in isolated flyback or forward converters delivering 12–48 V outputs. IC Role / Device Role / Timing Role: Standard recovery rectifier converting high-frequency AC from transformer secondary to regulated DC. Use Value: 400 V V_RRM and 2 A I_F support common 36 V input bus designs with margin; low V_F reduces conduction loss at 2 A loads.	Use Scenario: Output stage rectification in single-phase motor drive inverters or UPS systems. IC Role / Device Role / Timing Role: Unidirectional current path for DC link filtering and output waveform shaping. Use Value: 50 A I_FSM handles motor startup surges; 150°C T_J max allows operation in thermally constrained chassis environments.
General Purpose Power Supply	Industrial AC-DC Adapter
Use Scenario: Input bridge or output rectification in universal-input (85–265 VAC) offline SMPS. IC Role / Device Role / Timing Role: Discrete rectifying element in discrete or hybrid rectifier configurations. Use Value: DO-214AC package enables high-density layout; 0.060 g weight supports lightweight portable designs.	Use Scenario: Secondary-side rectification in wall-mounted AC-DC adapters rated ≤60 W. IC Role / Device Role / Timing Role: Surface-mount replacement for axial-leaded rectifiers in space-constrained enclosures. Use Value: Matte tin plating ensures reliable solderability per J-STD-002; halogen-free compound meets regional environmental mandates.

DC-DC Converter

Switching Mode Inverter

Use Scenario: Secondary-side rectification in isolated flyback or forward converters delivering 12–48 V outputs.

IC Role / Device Role / Timing Role: Standard recovery rectifier converting high-frequency AC from transformer secondary to regulated DC.

Use Value: 400 V V_RRM and 2 A I_F support common 36 V input bus designs with margin; low V_F reduces conduction loss at 2 A loads.

Use Scenario: Output stage rectification in single-phase motor drive inverters or UPS systems.

IC Role / Device Role / Timing Role: Unidirectional current path for DC link filtering and output waveform shaping.

Use Value: 50 A I_FSM handles motor startup surges; 150°C T_J max allows operation in thermally constrained chassis environments.

General Purpose Power Supply

Industrial AC-DC Adapter

Use Scenario: Input bridge or output rectification in universal-input (85–265 VAC) offline SMPS.

IC Role / Device Role / Timing Role: Discrete rectifying element in discrete or hybrid rectifier configurations.

Use Value: DO-214AC package enables high-density layout; 0.060 g weight supports lightweight portable designs.

Use Scenario: Secondary-side rectification in wall-mounted AC-DC adapters rated ≤60 W.

IC Role / Device Role / Timing Role: Surface-mount replacement for axial-leaded rectifiers in space-constrained enclosures.

Use Value: Matte tin plating ensures reliable solderability per J-STD-002; halogen-free compound meets regional environmental mandates.

Equivalent & Alternatives

The following parts are listed as comparable options for similar standard rectifier applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
STTH2R04	400 V V_RRM, 2 A I_F, but faster recovery (t_rr = 50 ns vs. ~2 µs for S2GA-T); higher V_F (1.3 V typ @ 2 A).	Better suited for high-frequency PFC stages; less optimal for low-noise, low-loss 100 kHz–500 kHz SMPS outputs.	Select STTH2R04 only when fast recovery is required and higher conduction loss is acceptable.
SB240-E3/5BT	40 V V_RRM, 2 A I_F, Schottky construction; near-zero reverse recovery but limited to ≤40 V blocking.	Only viable in low-voltage DC-DC outputs (e.g., 3.3 V, 5 V rails); unsuitable for 400 V line-derived topologies.	Choose SB240-E3/5BT exclusively for sub-40 V applications where ultra-low V_F and zero t_rr outweigh voltage limitation.

Compared with STTH2R04 and SB240-E3/5BT, the S2GA-T delivers optimal balance of 400 V blocking, low conduction loss (0.96 V), and cost-effective standard recovery performance for mainstream 100–500 kHz switching power supplies-without requiring fast-recovery or Schottky trade-offs.

Availability

S2GA-T is available at Aetrix Electronics and suitable for DC-DC converters, switching mode inverters, and general-purpose power supplies requiring stable component supply, consistent parametric performance, and long-term industrial availability.

Supply support for S2GA-T 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, specializing in power rectifiers, TVS diodes, MOSFETs, and bipolar transistors.

The S2GA-T belongs to TSC's S2xA-T family of standard surface-mount rectifiers, engineered for cost-sensitive, high-volume power conversion applications demanding reliability, manufacturability, and regulatory compliance in industrial and consumer power supplies.

FAQ

What is the maximum repetitive peak reverse voltage rating for the S2GA-T?

The S2GA-T has a maximum repetitive peak reverse voltage (V_RRM) of 400 V. This rating defines the highest continuous reverse-bias voltage the device can block without breakdown under normal operating conditions. It is verified per the manufacturer's absolute maximum ratings table and applies across the full operating temperature range of –55°C to +150°C. The S2GA-T must not be operated beyond this voltage in any circuit configuration.

Does the S2GA-T have a specified forward voltage drop at 2 A and 125°C?

Yes, the S2GA-T specifies a maximum forward voltage drop of 0.97 V at 2 A and 125°C. This value is critical for thermal design, as it directly determines conduction power loss (P = I × V_F) at elevated junction temperatures. At 2 A and 125°C, the S2GA-T dissipates ≤1.94 W in the forward direction, which must be accommodated by the PCB thermal layout and ambient conditions.

Is the S2GA-T compatible with lead-free reflow soldering processes?

Yes, the S2GA-T features matte tin-plated leads qualified per J-STD-002 for solderability and is rated for lead-free reflow profiles. Its DO-214AC (SMA) package is compatible with standard IPC/JEDEC J-STD-020 moisture sensitivity Level 1, meaning it may be placed directly onto PCBs without baking prior to reflow-even after extended dry pack storage.

What is the junction-to-lead thermal resistance (R_θJL) of the S2GA-T, and why does it matter?

The S2GA-T has a typical junction-to-lead thermal resistance (R_θJL) of 14 °C/W, measured on a 5 mm × 5 mm copper pad PCB. This parameter quantifies how effectively heat flows from the silicon die to the PCB copper via the leads. A low R_θJL enables more predictable thermal management and higher sustained current capability without exceeding the 150°C maximum junction temperature.

Can the S2GA-T replace the S2DA-T or S2JA-T in an existing design?

No-the S2GA-T is not a drop-in replacement for S2DA-T (200 V) or S2JA-T (600 V), as each variant has distinct V_RRM ratings. Substituting S2GA-T for S2JA-T would reduce reverse voltage margin by 200 V and risk premature breakdown. Only use S2GA-T where the circuit requires exactly 400 V blocking capability, as defined in the S2xA-T family ordering code matrix.

S2GA-T 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):: 2A

Voltage - Forward (Vf) (Max) @ If:: 1.1 V @ 2 A

Speed:: Standard Recovery >500ns, > 200mA (Io)

Reverse Recovery Time (trr):: -

Current - Reverse Leakage @ Vr:: 5 µA @ 400 V

Capacitance @ Vr, F:: 30pF @ 4V, 1MHz

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: DO-214AC (SMA)

Operating Temperature - Junction:: -55°C ~ 150°C

S2GA-T FAQ

1.How can I place an order for S2GA-T through Aetrix?

Please submit a Request for Quotation (RFQ) for S2GA-T 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 S2GA-T reliable?

The price and inventory of S2GA-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for S2GA-T is usually 5 days.

3.What payment methods are accepted for S2GA-T?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for S2GA-T transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for S2GA-T?

S2GA-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your S2GA-T 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 S2GA-T?

For technical support, including S2GA-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your S2GA-T requirements.

6.How does Aetrix verify that S2GA-T is sourced from the original manufacturer or authorized distributors?

All S2GA-T 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 S2GA-T meets industry standards.

7.What is the process for return or replacement of S2GA-T?

All S2GA-T units undergo pre-shipment inspection (PSI). If there is an issue with S2GA-T, 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 S2GA-T part is unused and in its original packaging.

Return procedure for S2GA-T:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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