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

Taiwan Semiconductor Corporation S2G

Name: S2G
Brand: Taiwan Semiconductor Corporation
SKU: S2G
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: S2G

Manufacturer:: Taiwan Semiconductor Corporation

Category:: Single Diodes

Package:: DO-214AA, SMB

Datasheet:: S2G.pdf

Description:: DIODE GEN PURP 400V 2A DO214AA

Quantity:: RFQ Add To RFQ list

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Inventory:6,012

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Product details

Overview

S2G from Taiwan Semiconductor is a 400 V repetitive peak reverse voltage, 2 A average forward current standard surface-mount silicon rectifier diode in DO-214AA (SMB) package, featuring 1.15 V max forward voltage at 2 A and 1500 ns reverse recovery time, used in AC/DC front-end rectification for offline SMPS and LED drivers.

For engineers reviewing the S2G datasheet, S2G pinout, S2G application, or S2G equivalent, key selection criteria include its 400 V V_RRM, 50 A surge rating, 16 °C/W junction-to-lead thermal resistance, J-STD-020 Level 1 moisture sensitivity, and RoHS/halogen-free compliance for high-reliability industrial power conversion.

Technical Context

The S2G is a single-die, glass-passivated PN-junction standard recovery rectifier optimized for cost-sensitive, medium-voltage AC/DC conversion where fast recovery is not required. Its 1500 ns trr and 30 pF junction capacitance reflect trade-offs favoring low conduction loss over switching speed.

Thermally, it relies on PCB copper area for heat dissipation via its DO-214AA (SMB) package, with R_θJL = 16 °C/W enabling 2 A continuous operation at ≤85 °C ambient when mounted on ≥1 cm² 2-oz copper, while R_θJA = 53 °C/W applies to minimal pad layouts.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	400 V - Maximum non-repetitive reverse blocking voltage; defines maximum AC input peak voltage support (e.g., 280 V_RMS line).
I_F	2 A - Continuous average forward current at T_L = 75 °C; derates linearly to zero at 150 °C junction temperature.
V_F	≤1.15 V @ 2 A, 25 °C - Directly determines conduction loss (2.3 W max at full load), impacting thermal design and efficiency.
I_FSM	50 A - Peak surge current capability for 8.3 ms half-sine; supports cold-start inrush in offline converters.
t_rr	1500 ns - Reverse recovery time; limits usable switching frequency to <100 kHz in hard-switched topologies.
R_θJL	16 °C/W - Junction-to-lead thermal resistance; enables direct thermal path to PCB ground plane for stable 2 A operation.
C_J	30 pF @ 4 V - Junction capacitance; contributes to EMI generation during turn-off and affects snubber design.

Pinout & Package

Package: DO-214AA (SMB), surface-mount, cathode-indicated by band, matte tin-plated leads, UL 94V-0 molding compound, 0.090 g typical weight.

Pin/Terminal	Circuit Role	Design Meaning
Anode (unbanded end)	Forward current entry point	Connected to AC input or transformer secondary; must handle full 2 A RMS and 50 A surge.
Cathode (banded end)	Forward current exit point	Connected to bulk capacitor or DC bus; polarity marking critical for correct orientation on PCB.

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.
Moisture sensitivity level 1	Allows unlimited floor life before reflow; no baking required prior to assembly, reducing manufacturing overhead.
RoHS and halogen-free compliance	Meets IEC 61249-2-21 and EU RoHS directives; supports export to EU, Japan, and other regulated markets without documentation burden.
Automated placement compatibility	DO-214AA footprint and lead geometry conform to IPC-7351B standards, ensuring high-yield pick-and-place throughput.

Applications

LED Driver Power Supply	Industrial AC/DC Adapter
Use Scenario: Rectifying 100–277 V_AC input in constant-current LED drivers for street lighting and commercial fixtures. IC Role / Device Role / Timing Role: Primary-side standard rectifier converting AC line to unregulated DC bus prior to buck/buck-boost regulation. Use Value: 400 V V_RRM safely covers 277 V_AC (392 V peak) with margin; 2 A rating supports up to 60 W output at >85% efficiency.	Use Scenario: Input rectification in universal-input (85–265 V_AC) 12 V/2 A industrial adapters powering PLC I/O modules. IC Role / Device Role / Timing Role: Bridge or single-diode rectifier in voltage-doubler or full-wave configuration feeding bulk capacitor. Use Value: 50 A I_FSM withstands repeated cold-start surges; DO-214AA package allows compact layout with minimal creepage/clearance impact.
Switched-Mode Power Supply (SMPS)	AC Motor Control Auxiliary Supply
Use Scenario: Output rectification in 24 V/1.5 A flyback converter for telecom equipment power shelves. IC Role / Device Role / Timing Role: Secondary-side freewheeling rectifier conducting during transformer reset phase. Use Value: Low 1.15 V V_F minimizes conduction loss at 1.5 A, improving light-load efficiency and easing thermal management.	Use Scenario: Isolated auxiliary supply (±15 V) for gate drivers and op-amps in 3-phase inverter control boards. IC Role / Device Role / Timing Role: Half-wave rectifier in dual-output center-tapped transformer winding. Use Value: 1500 ns t_rr avoids commutation failure with 50/60 Hz input; 150 °C T_JMAX ensures operation in sealed enclosures up to 85 °C ambient.

LED Driver Power Supply

Industrial AC/DC Adapter

Use Scenario: Rectifying 100–277 V_AC input in constant-current LED drivers for street lighting and commercial fixtures.

IC Role / Device Role / Timing Role: Primary-side standard rectifier converting AC line to unregulated DC bus prior to buck/buck-boost regulation.

Use Value: 400 V V_RRM safely covers 277 V_AC (392 V peak) with margin; 2 A rating supports up to 60 W output at >85% efficiency.

Use Scenario: Input rectification in universal-input (85–265 V_AC) 12 V/2 A industrial adapters powering PLC I/O modules.

IC Role / Device Role / Timing Role: Bridge or single-diode rectifier in voltage-doubler or full-wave configuration feeding bulk capacitor.

Use Value: 50 A I_FSM withstands repeated cold-start surges; DO-214AA package allows compact layout with minimal creepage/clearance impact.

Switched-Mode Power Supply (SMPS)

AC Motor Control Auxiliary Supply

Use Scenario: Output rectification in 24 V/1.5 A flyback converter for telecom equipment power shelves.

IC Role / Device Role / Timing Role: Secondary-side freewheeling rectifier conducting during transformer reset phase.

Use Value: Low 1.15 V V_F minimizes conduction loss at 1.5 A, improving light-load efficiency and easing thermal management.

Use Scenario: Isolated auxiliary supply (±15 V) for gate drivers and op-amps in 3-phase inverter control boards.

IC Role / Device Role / Timing Role: Half-wave rectifier in dual-output center-tapped transformer winding.

Use Value: 1500 ns t_rr avoids commutation failure with 50/60 Hz input; 150 °C T_JMAX ensures operation in sealed enclosures up to 85 °C ambient.

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 trr = 75 ns; higher V_F = 1.3 V typical; TO-220AC package.	Requires heatsink for same 2 A load; better suited for high-frequency PFC stages than S2G's target SMPS front-end.	Select STTH2R04 only if board-level switching frequency exceeds 100 kHz and thermal mass permits TO-220 mounting.
ES2D	200 V V_RRM, same DO-214AA package and 2 A rating; lower V_F = 1.05 V; trr = 35 ns.	Not rated for 277 V_AC inputs; limited to 120 V_AC-only applications like consumer adapters.	Use ES2D only in legacy 120 V_AC designs where 400 V margin is unnecessary and faster recovery is beneficial.

Compared with STTH2R04 and ES2D, the S2G provides optimal balance of voltage rating, thermal performance in SMB package, and cost for 277 V_AC industrial rectification-neither over-specified nor under-rated for its intended use case.

Availability

S2G is available at Aetrix Electronics and suitable for switching mode power supplies, LED drivers, and industrial AC/DC adapters requiring stable component supply across extended production lifecycles.

Supply support for S2G 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 Taiwanese semiconductor manufacturer specializing in discrete power devices, including rectifiers, TVS diodes, and MOSFETs, with ISO/TS 16949 and ISO 14001 certification.

The S2G belongs to TSC's S2x family of standard recovery rectifiers designed specifically for cost-effective, high-volume AC/DC front-end rectification in industrial and lighting power supplies.

FAQ

What is the maximum repetitive peak reverse voltage (V_RRM) for the S2G?

The S2G has a V_RRM of 400 V, meaning it can reliably block up to 400 V of reverse voltage in repetitive operation. This rating allows safe use with 277 V_AC mains (peak ≈ 392 V) while maintaining design margin. The value is confirmed in the Absolute Maximum Ratings table of the N2102 datasheet revision for the S2x series.

Does the S2G have a specified reverse recovery time (t_rr)?

Yes, the S2G has a typical reverse recovery time of 1500 ns under conditions of I_F = 0.5 A, I_R = 1.0 A, and I_rr = 0.25 A. This value is measured per JEDEC standard test methods and appears in the Electrical Specifications section of the S2x datasheet. It confirms the device is a standard (not fast or ultrafast) recovery rectifier.

Is the S2G compliant with RoHS and halogen-free requirements?

Yes, the S2G is RoHS compliant and halogen-free per IEC 61249-2-21. These compliance statements appear in the Features section of the official Taiwan Semiconductor S2x datasheet (N2102). The device uses matte tin-plated leads and UL 94V-0 molding compound, supporting environmentally regulated markets.

What is the thermal resistance from junction to ambient (R_θJA) for the S2G?

The S2G has an R_θJA of 53 °C/W when mounted on a standard JEDEC test board (1-inch² 2-oz copper). This value reflects worst-case convection-only cooling and is used for conservative thermal estimation. For real-world designs, R_θJL = 16 °C/W is more relevant when using internal copper planes as heat spreaders.

Can the S2G be used as a direct replacement for the S2D in a 200 V design?

No, the S2G is not a direct replacement for the S2D in a 200 V design because its 400 V V_RRM does not match the S2D's 200 V rating. While electrically functional, using S2G may increase cost and slightly raise forward voltage due to process differences. Substitution should only occur after verifying layout, thermal, and reliability impact in the target application.

S2G Specifications

Product attributes: Attribute value

Manufacturer:: Taiwan Semiconductor Corporation

Series:: -

Package/Case:: DO-214AA, SMB

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:: 1.15 V @ 2 A

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

Reverse Recovery Time (trr):: 1.5 µs

Current - Reverse Leakage @ Vr:: 1 µA @ 400 V

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: DO-214AA (SMB)

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

S2G FAQ

1.How can I place an order for S2G through Aetrix?

Please submit a Request for Quotation (RFQ) for S2G 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 S2G reliable?

The price and inventory of S2G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for S2G is usually 5 days.

3.What payment methods are accepted for S2G?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for S2G transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for S2G?

S2G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your S2G 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 S2G?

For technical support, including S2G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your S2G requirements.

6.How does Aetrix verify that S2G is sourced from the original manufacturer or authorized distributors?

All S2G 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 S2G meets industry standards.

7.What is the process for return or replacement of S2G?

All S2G units undergo pre-shipment inspection (PSI). If there is an issue with S2G, 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 S2G part is unused and in its original packaging.

Return procedure for S2G:

1.Submit a request within 90 days.

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

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