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

Taiwan Semiconductor Corporation S2MAL

Name: S2MAL
Brand: Taiwan Semiconductor Corporation
SKU: S2MAL
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: S2MAL

Manufacturer:: Taiwan Semiconductor Corporation

Category:: Single Diodes

Package:: DO-221AC, SMA Flat Leads

Datasheet:: S2MAL.pdf

Description:: DIODE GEN PURP 1KV 2A THIN SMA

Quantity:: RFQ Add To RFQ list

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Inventory:6,784

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Product details

Overview

S2MAL from Taiwan Semiconductor is a 2 A, 1000 V standard surface-mount rectifier diode in a Thin SMA package, featuring glass-passivated junction, 50 A surge rating (8.3 ms), and 150 °C max junction temperature - used in high-voltage DC-DC converters and switching inverters.

For engineers reviewing the S2MAL datasheet, S2MAL pinout, S2MAL application, or S2MAL equivalent, key selection criteria include repetitive peak reverse voltage (1000 V), forward voltage at 2 A (≤1.10 V @ 25°C), thermal resistance (R_θJL = 14 °C/W), moisture sensitivity level (MSL 1), and RoHS/halogen-free compliance.

Technical Context

The S2MAL is a single-die, standard recovery rectifier optimized for high-voltage switching-mode power supplies. Its glass-passivated junction ensures stable reverse leakage (<1 µA @ 25°C, <33 µA @ 125°C) and robust surge handling (140 A @ 1 ms).

Thermal performance is characterized with R_θJA = 74 °C/W on a 5 mm × 5 mm Cu pad PCB, supporting continuous 2 A operation up to 125°C ambient when properly heatsinked via lead conduction (R_θJL = 14 °C/W).

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	1000 V - supports input stages in 800 V-class AC/DC front-ends and industrial HV DC-DC designs
I_F	2 A continuous - rated for sustained output rectification in 20–40 W isolated SMPS
I_FSM (8.3 ms)	50 A - withstands inrush and transient surges in offline converter startup
V_F @ 2 A, 25°C	≤1.10 V - limits conduction loss to ≤2.2 W at full load, easing thermal design
T_J max	+150 °C - enables operation in sealed enclosures or high-ambient industrial environments
R_θJL	14 °C/W - allows efficient heat transfer through leads to PCB copper, reducing need for extra thermal vias
C_J	12 pF @ 4 V - minimizes switching node capacitance in high-frequency flyback or LLC resonant circuits

Pinout & Package

Package: Thin SMA - low-profile surface-mount package (2.7 mm × 4.2 mm × 1.7 mm), matte tin-plated leads, cathode indicated by band, MSL Level 1, UL 94V-0 molding compound.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Input current entry point	Connected to transformer secondary or switch node; must tolerate full reverse voltage during off-state
Cathode	Output current exit point	Connected to output capacitor or filter choke; polarity marked by visible band on body

Key Features

Feature	Design Value
Glass-passivated junction	Ensures stable IR across temperature and long-term reliability under humid conditions
MSL Level 1 rating	Enables direct placement without baking, compatible with standard reflow profiles
RoHS & halogen-free	Meets IEC 61249-2-21 and global environmental compliance requirements for industrial shipments
Low profile (1.7 mm height)	Supports ultra-thin power supply designs and automated pick-and-place with minimal nozzle interference

Applications

Industrial HV DC-DC Converter	AC/DC Adapter Front-End
Use Scenario: 1000 V-rated secondary-side rectification in telecom 48 V–54 V output supplies with wide-input AC range. IC Role / Device Role / Timing Role: Standard recovery rectifier handling continuous 2 A output current and 1000 V reverse blocking. Use Value: Low V_F (≤1.10 V) reduces conduction loss; R_θJL = 14 °C/W enables compact heatsinking via PCB traces.	Use Scenario: Bridge rectifier replacement in universal-input (85–265 VAC) offline adapters targeting >65 W output. IC Role / Device Role / Timing Role: High-voltage output rectifier in flyback or forward topology with 1000 V PIV margin. Use Value: 50 A surge rating handles cold-start inrush; MSL Level 1 simplifies manufacturing flow.
Solar Microinverter DC Link	Motor Drive Auxiliary Power Supply
Use Scenario: Isolated auxiliary supply rectification in string-level microinverters exposed to 1000 V PV array voltages. IC Role / Device Role / Timing Role: Primary output rectifier in 12 V/2 A isolated flyback supplying gate drivers and MCU. Use Value: T_J max = 150 °C supports operation near hot PV modules; halogen-free construction meets solar industry standards.	Use Scenario: Control power rectification in 3-phase IGBT gate driver supplies within HVAC or pump inverters. IC Role / Device Role / Timing Role: Secondary-side rectifier delivering 15 V/2 A to isolated gate driver ICs and sensors. Use Value: 12 pF junction capacitance minimizes EMI coupling into sensitive timing circuits; thin SMA footprint saves board space.

Industrial HV DC-DC Converter

AC/DC Adapter Front-End

Use Scenario: 1000 V-rated secondary-side rectification in telecom 48 V–54 V output supplies with wide-input AC range.

IC Role / Device Role / Timing Role: Standard recovery rectifier handling continuous 2 A output current and 1000 V reverse blocking.

Use Value: Low V_F (≤1.10 V) reduces conduction loss; R_θJL = 14 °C/W enables compact heatsinking via PCB traces.

Use Scenario: Bridge rectifier replacement in universal-input (85–265 VAC) offline adapters targeting >65 W output.

IC Role / Device Role / Timing Role: High-voltage output rectifier in flyback or forward topology with 1000 V PIV margin.

Use Value: 50 A surge rating handles cold-start inrush; MSL Level 1 simplifies manufacturing flow.

Solar Microinverter DC Link

Motor Drive Auxiliary Power Supply

Use Scenario: Isolated auxiliary supply rectification in string-level microinverters exposed to 1000 V PV array voltages.

IC Role / Device Role / Timing Role: Primary output rectifier in 12 V/2 A isolated flyback supplying gate drivers and MCU.

Use Value: T_J max = 150 °C supports operation near hot PV modules; halogen-free construction meets solar industry standards.

Use Scenario: Control power rectification in 3-phase IGBT gate driver supplies within HVAC or pump inverters.

IC Role / Device Role / Timing Role: Secondary-side rectifier delivering 15 V/2 A to isolated gate driver ICs and sensors.

Use Value: 12 pF junction capacitance minimizes EMI coupling into sensitive timing circuits; thin SMA footprint saves board space.

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-voltage rectifier applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
STTH2R010DJF	1000 V, 2 A, TO-277 package (higher R_θJA = 90 °C/W), faster recovery (t_rr = 45 ns)	Better for high-frequency (>100 kHz) PFC stages; requires larger footprint and thermal relief	Choose STTH2R010DJF when fast recovery and lower EMI are critical; S2MAL preferred for cost-sensitive, thermally constrained layouts
ON Semi MUR220	200 V rating only; same Thin SMA package, but not voltage-compatible for 1000 V use	Limited to low-voltage DC-DC; cannot substitute directly in S2MAL's 1000 V applications	Select MUR220 only for ≤200 V designs; S2MAL remains required where 1000 V PIV is mandated by system architecture

Compared with STTH2R010DJF and MUR220, the S2MAL uniquely balances 1000 V capability, MSL Level 1 manufacturability, and low-profile Thin SMA packaging - making it optimal for space-constrained, high-reliability industrial power supplies where standard recovery speed suffices.

Availability

S2MAL is available at Aetrix Electronics and suitable for industrial HV DC-DC converters, solar microinverter auxiliary supplies, and motor drive control power systems requiring stable component supply across multi-year production cycles.

Supply support for S2MAL 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 industrial, computing, and consumer markets since 1979.

The S2MAL belongs to TSC's S2xAL standard rectifier family, engineered specifically for high-voltage, surface-mount power conversion applications demanding reliability, manufacturability, and compliance with global environmental standards.

FAQ

What is the maximum repetitive peak reverse voltage (V_RRM) of the S2MAL?

The S2MAL has a V_RRM of 1000 V, confirmed in the Absolute Maximum Ratings table of the official Taiwan Semiconductor datasheet (Version B2103). This rating defines its ability to block reverse voltage in high-voltage power supply applications such as telecom DC-DC converters and solar microinverter auxiliary supplies. Exceeding this value risks irreversible junction breakdown.

Does the S2MAL have a specified forward voltage at 2 A and 125°C?

Yes - the S2MAL's forward voltage is specified as ≤0.98 V at 2 A and 25°C, and ≤0.98 V (max) at 2 A and 125°C per the Electrical Specifications table. This ensures predictable conduction loss under elevated temperature conditions typical in enclosed industrial power supplies, directly supporting thermal design validation for the S2MAL.

Is the S2MAL RoHS and halogen-free compliant?

Yes - the S2MAL is explicitly stated as RoHS compliant and halogen-free per IEC 61249-2-21 in the Features section of the Taiwan Semiconductor datasheet. This compliance is verified for all production lots and applies to both lead finish and molding compound, meeting export and industrial safety requirements for the S2MAL.

What is the moisture sensitivity level (MSL) of the S2MAL?

The S2MAL carries Moisture Sensitivity Level 1 (MSL 1) per J-STD-020, meaning it can be stored indefinitely at ≤30°C/85% RH and placed directly onto PCBs using standard reflow profiles without pre-baking. This MSL rating is documented in the Features section and confirmed in the Mechanical Data table for the S2MAL.

Can the S2MAL replace the S2DAL in a 200 V circuit?

Yes - the S2MAL is functionally backward-compatible with the S2DAL in 200 V circuits because it shares identical package (Thin SMA), pinout, thermal characteristics, and forward conduction behavior. However, the S2MAL's higher V_RRM does not improve efficiency or reduce V_F; substitution should be validated for cost and availability impact, not performance gain, in the S2MAL application.

S2MAL Specifications

Product attributes: Attribute value

Manufacturer:: Taiwan Semiconductor Corporation

Series:: -

Package/Case:: DO-221AC, SMA Flat Leads

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:: 1 µA @ 1000 V

Capacitance @ Vr, F:: 12pF @ 4V, 1MHz

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: Thin SMA

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

S2MAL FAQ

1.How can I place an order for S2MAL through Aetrix?

Please submit a Request for Quotation (RFQ) for S2MAL 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 S2MAL reliable?

The price and inventory of S2MAL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for S2MAL is usually 5 days.

3.What payment methods are accepted for S2MAL?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for S2MAL transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for S2MAL?

S2MAL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your S2MAL 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 S2MAL?

For technical support, including S2MAL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your S2MAL requirements.

6.How does Aetrix verify that S2MAL is sourced from the original manufacturer or authorized distributors?

All S2MAL 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 S2MAL meets industry standards.

7.What is the process for return or replacement of S2MAL?

All S2MAL units undergo pre-shipment inspection (PSI). If there is an issue with S2MAL, 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 S2MAL part is unused and in its original packaging.

Return procedure for S2MAL:

1.Submit a request within 90 days.

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

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