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

Taiwan Semiconductor Corporation S2M-T

Name: S2M-T
Brand: Taiwan Semiconductor Corporation
SKU: S2M-T
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: S2M-T

Manufacturer:: Taiwan Semiconductor Corporation

Category:: Single Diodes

Package:: DO-214AA, SMB

Datasheet:: S2M-T.pdf

Description:: 2A, 1000V, STANDARD RECTIFIER

Quantity:: RFQ Add To RFQ list

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Inventory:9,446

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Product details

Overview

S2M-T from Taiwan Semiconductor is a 2 A, 1000 V standard surface-mount silicon rectifier diode in DO-214AA (SMB) package, featuring glass passivated junction, low reverse leakage (≤5 µA @ 25°C), and 50 A surge capability (8.3 ms). It serves as primary AC/DC input rectifier in off-line SMPS power supplies.

For engineers reviewing the S2M-T datasheet, S2M-T pinout, S2M-T application, or S2M-T equivalent, key selection criteria include peak reverse voltage rating (1000 V), forward voltage drop (0.95 V @ 2 A, 25°C), thermal resistance (R_θJA = 78 °C/W), junction temperature limit (+150°C), and SMB package compatibility with automated placement.

Technical Context

The S2M-T is a single-die, unidirectional silicon PN junction rectifier optimized for high-voltage, medium-current switching-mode power conversion. Its glass passivation ensures stable reverse characteristics across temperature and humidity stress.

Designed for operation up to +150°C junction temperature, it delivers 2 A average forward current with 50 A non-repetitive surge rating (8.3 ms half-sine) and exhibits low capacitance (11 pF @ 4 V, 1 MHz), minimizing switching losses in high-frequency converters.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	1000 V - Maximum repetitive reverse voltage before breakdown; enables use in 800 V DC bus or 560 V RMS AC line applications.
I_F	2 A - Continuous average forward current at T_A = 75°C on 10 mm × 10 mm Cu pad; defines steady-state power handling.
I_FSM	50 A - Non-repetitive surge current (8.3 ms); supports inrush current tolerance during cold start of power supplies.
V_F	0.95 V max @ 2 A, 25°C - Forward voltage drop directly impacts conduction loss and thermal design in rectifier stage.
R_θJA	78 °C/W - Junction-to-ambient thermal resistance on standard PCB test board; determines required heatsinking for thermal margin.
C_J	11 pF @ 4 V, 1 MHz - Junction capacitance affects high-frequency switching noise and EMI filter design.

Pinout & Package

Package: DO-214AA (SMB), surface-mount, single-anode/single-cathode configuration. Cathode indicated by molded band. Matte tin-plated leads, J-STD-002 solderable, moisture sensitivity level 1.

Pin/Terminal	Circuit Role	Design Meaning
Anode (lead 1)	Forward current entry point	Connected to AC input or transformer secondary; must withstand full reverse voltage when cathode is positive.
Cathode (lead 2)	Forward current exit point	Connected to bulk capacitor or output rail; polarity band identifies this terminal for correct PCB orientation.

Key Features

Feature	Design Value
Glass passivated junction	Ensures stable reverse leakage (<5 µA @ 25°C) and long-term reliability under humid operating conditions.
DO-214AA (SMB) package	Enables high-density layout and compatibility with standard SMT pick-and-place equipment and reflow profiles.
Low forward voltage (0.95 V max @ 2 A)	Reduces conduction loss and improves efficiency in 20–100 W offline adapters and auxiliary power supplies.
Junction temperature rating (−55°C to +150°C)	Supports operation in industrial environments and sealed enclosures without derating below 75°C ambient.

Applications

AC/DC Front-End Rectification	DC-DC Converter Input Stage
Use Scenario: Full-wave bridge or single-phase rectification of 230 V AC mains in offline switch-mode power supplies. IC Role / Device Role / Timing Role: Primary rectifier converting AC input to pulsating DC prior to bulk capacitor filtering. Use Value: 1000 V V_RRM provides 2× safety margin over 230 V AC peak (≈325 V), ensuring robustness against line surges.	Use Scenario: Input rectification in isolated flyback or forward converters fed from intermediate DC bus (e.g., 400 V PFC output). IC Role / Device Role / Timing Role: Unidirectional current path enabling energy transfer from primary to secondary side during switching cycles. Use Value: Low 11 pF junction capacitance minimizes switching node ringing and EMI generation at 65–130 kHz operation.
Industrial Power Supply Input	Automotive Auxiliary Power Module
Use Scenario: Rectification in DIN-rail mounted 24/48 V DC power supplies operating from 120/230 V AC input. IC Role / Device Role / Timing Role: High-reliability discrete rectifier replacing older axial-leaded types in space-constrained designs. Use Value: UL 94V-0 molding compound and JESD201 Class 1 whisker resistance support long-life deployment in harsh factory environments.	Use Scenario: Low-power auxiliary supply in vehicle infotainment or ADAS ECUs powered from 12 V battery with transient protection. IC Role / Device Role / Timing Role: Reverse-polarity and surge protection rectifier in input conditioning stage. Use Value: 50 A I_FSM rating handles load dump transients (ISO 7637-2 Pulse 5a), while −55°C to +150°C range covers automotive under-hood thermal extremes.

AC/DC Front-End Rectification

DC-DC Converter Input Stage

Use Scenario: Full-wave bridge or single-phase rectification of 230 V AC mains in offline switch-mode power supplies.

IC Role / Device Role / Timing Role: Primary rectifier converting AC input to pulsating DC prior to bulk capacitor filtering.

Use Value: 1000 V V_RRM provides 2× safety margin over 230 V AC peak (≈325 V), ensuring robustness against line surges.

Use Scenario: Input rectification in isolated flyback or forward converters fed from intermediate DC bus (e.g., 400 V PFC output).

IC Role / Device Role / Timing Role: Unidirectional current path enabling energy transfer from primary to secondary side during switching cycles.

Use Value: Low 11 pF junction capacitance minimizes switching node ringing and EMI generation at 65–130 kHz operation.

Industrial Power Supply Input

Automotive Auxiliary Power Module

Use Scenario: Rectification in DIN-rail mounted 24/48 V DC power supplies operating from 120/230 V AC input.

IC Role / Device Role / Timing Role: High-reliability discrete rectifier replacing older axial-leaded types in space-constrained designs.

Use Value: UL 94V-0 molding compound and JESD201 Class 1 whisker resistance support long-life deployment in harsh factory environments.

Use Scenario: Low-power auxiliary supply in vehicle infotainment or ADAS ECUs powered from 12 V battery with transient protection.

IC Role / Device Role / Timing Role: Reverse-polarity and surge protection rectifier in input conditioning stage.

Use Value: 50 A I_FSM rating handles load dump transients (ISO 7637-2 Pulse 5a), while −55°C to +150°C range covers automotive under-hood thermal extremes.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
STTH2R06	600 V V_RRM, 2 A, TO-220AC package, higher V_F (1.15 V @ 2 A)	Requires heatsink for same power dissipation; unsuitable for 1000 V line applications	Select only if lower voltage rating and through-hole mounting are acceptable.
SB2100	100 V V_RRM, 2 A, DO-214AA package, Schottky architecture, lower V_F (0.85 V)	Cannot withstand >100 V reverse bias; limited to low-voltage DC-DC inputs	Use only in ≤100 V systems where ultra-low forward drop outweighs reverse voltage limitation.

Compared with STTH2R06 and SB2100, the S2M-T uniquely balances 1000 V blocking capability, SMB surface-mount form factor, and thermally robust 150°C junction rating-making it irreplaceable in compact, high-input-voltage AC/DC front ends where both voltage margin and automated assembly are mandatory.

Availability

S2M-T is available at Aetrix Electronics and suitable for AC/DC front-end rectification, industrial power supply input stages, and automotive auxiliary power modules requiring stable component supply and long-term manufacturability.

Supply support for S2M-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, and MOSFETs for industrial and consumer markets.

The S2M-T belongs to TSC's S2x-T family of standard rectifiers engineered for cost-sensitive, high-volume AC/DC power conversion applications demanding reliability, RoHS compliance, and automated assembly compatibility.

FAQ

What is the maximum repetitive peak reverse voltage rating of the S2M-T?

The S2M-T has a maximum repetitive peak reverse voltage (V_RRM) of 1000 V, verified per Taiwan Semiconductor's C2102 datasheet. This rating allows safe operation in 230 V AC mains applications with ≥3× safety margin against line surges. The S2M-T maintains this rating across its full operating temperature range (−55°C to +150°C junction).

Does the S2M-T have a glass passivated junction, and why does it matter?

Yes, the S2M-T features a glass passivated chip junction, explicitly stated in its official features list. This construction prevents moisture ingress and surface contamination, resulting in stable reverse leakage (≤5 µA @ 25°C) and long-term reliability in humid or thermally cycled environments-critical for industrial and outdoor power supply deployments.

What is the forward voltage drop of the S2M-T at rated current and temperature?

The S2M-T exhibits a maximum forward voltage (V_F) of 0.95 V at 2 A and 25°C, and 0.94 V at 2 A and 125°C, per electrical specifications. These values directly determine conduction loss (P_cond ≈ I_F × V_F) and influence thermal design in continuous-duty applications such as offline SMPS.

Is the S2M-T compatible with lead-free reflow soldering processes?

Yes, the S2M-T uses matte tin-plated leads compliant with J-STD-002 solderability requirements and is rated for lead-free reflow. Its DO-214AA (SMB) package is qualified for standard Pb-free thermal profiles, including peak temperatures up to 260°C, supporting modern RoHS-compliant manufacturing lines.

What is the surge current rating of the S2M-T, and how is it defined?

The S2M-T is rated for 50 A non-repetitive surge forward current (I_FSM) under an 8.3 ms half-sine waveform, per absolute maximum ratings. This rating applies to single-event inrush or transient overload conditions and is measured with the device mounted on a 10 mm × 10 mm copper pad, ensuring realistic PCB-level thermal boundary conditions for design validation.

S2M-T 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):: 1000 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 @ 1000 V

Capacitance @ Vr, F:: 11pF @ 4V, 1MHz

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

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

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

S2M-T FAQ

1.How can I place an order for S2M-T through Aetrix?

Please submit a Request for Quotation (RFQ) for S2M-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 S2M-T reliable?

The price and inventory of S2M-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for S2M-T is usually 5 days.

3.What payment methods are accepted for S2M-T?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for S2M-T transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for S2M-T?

S2M-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your S2M-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 S2M-T?

For technical support, including S2M-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your S2M-T requirements.

6.How does Aetrix verify that S2M-T is sourced from the original manufacturer or authorized distributors?

All S2M-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 S2M-T meets industry standards.

7.What is the process for return or replacement of S2M-T?

All S2M-T units undergo pre-shipment inspection (PSI). If there is an issue with S2M-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 S2M-T part is unused and in its original packaging.

Return procedure for S2M-T:

1.Submit a request within 90 days.

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

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