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

Taiwan Semiconductor Corporation S2JAL

Name: S2JAL
Brand: Taiwan Semiconductor Corporation
SKU: S2JAL
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: S2JAL

Manufacturer:: Taiwan Semiconductor Corporation

Category:: Single Diodes

Package:: DO-221AC, SMA Flat Leads

Datasheet:: S2JAL.pdf

Description:: DIODE GEN PURP 600V 2A THIN SMA

Quantity:: RFQ Add To RFQ list

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Inventory:6,820

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Product details

Overview

S2JAL from Taiwan Semiconductor is a 2 A, 600 V standard surface-mount rectifier diode with glass-passivated junction, thin SMA package, and 50 A surge rating; it delivers low forward voltage (0.98 V at 2 A, 25°C) for efficient DC-DC conversion in power supplies.

For engineers reviewing the S2JAL datasheet, S2JAL pinout, S2JAL application, or S2JAL equivalent, key selection criteria include repetitive peak reverse voltage (600 V), thermal resistance (R_θJL = 14 °C/W), moisture sensitivity level (MSL 1), and compatibility with automated placement on high-density PCBs.

Technical Context

The S2JAL is a single-die, unidirectional silicon rectifier optimized for switching-mode power conversion. Its glass-passivated junction ensures stable reverse leakage (<1 µA at 25°C, <33 µA at 125°C) and robust surge tolerance (50 A @ 8.3 ms).

Thermal performance is characterized with R_θJA = 74 °C/W on a 5 mm × 5 mm Cu pad, supporting operation up to 150°C junction temperature. The cathode band marking and matte tin-plated leads comply with J-STD-002 solderability and JESD 201 Class 2 whisker requirements.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	600 V - Maximum repetitive reverse voltage; defines safe blocking capability in 400–650 V DC bus applications
I_F	2 A - Continuous average forward current; supports sustained conduction in compact SMPS designs
I_FSM	50 A @ 8.3 ms - Surge withstand capability; handles startup transients and short-circuit events
V_F	0.98 V max @ 2 A, 25°C - Low conduction loss; reduces power dissipation and improves efficiency
R_θJL	14 °C/W - Junction-to-lead thermal resistance; enables direct heat transfer to PCB copper for passive cooling
C_J	12 pF @ 1 MHz, 4 V - Low junction capacitance; minimizes switching noise and EMI in high-frequency converters

Pinout & Package

Package: Thin SMA (Surface Mount Assembly), low-profile, RoHS-compliant, halogen-free, UL 94V-0 molding compound; polarity indicated by cathode band.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Forward current entry	Connected to lower-potential side of AC input or transformer secondary
Cathode	Forward current exit / reverse voltage blocking terminal	Marked with band; connects to output rail or positive bus; blocks 600 V reverse bias

Key Features

Feature	Design Value
Glass-passivated junction	Enables stable IR ≤ 1 µA at 25°C and reliable long-term operation under humidity stress
MSL Level 1 rating	Allows unlimited floor life and reflow without baking-ideal for high-throughput SMT lines
Thin SMA footprint	Reduces board area vs. SMA/DO-214AC; compatible with 0.5 mm pitch stencil printing
Matte tin-plated leads	Ensures consistent wetting and void-free solder joints per J-STD-002 Class 2A

Applications

DC-DC Converter	Switching Inverter
Use Scenario: Secondary-side rectification in isolated flyback or forward converters delivering 5–24 V outputs. IC Role / Device Role / Timing Role: Power rectifier converting high-frequency AC from transformer secondary into regulated DC. Use Value: 0.98 V V_F at 2 A reduces conduction loss by ~15% vs. legacy 1.15 V diodes, improving efficiency at light-to-moderate loads.	Use Scenario: Output stage rectification in solar microinverters operating with 400–600 V DC link. IC Role / Device Role / Timing Role: Unidirectional current path enabling bidirectional energy flow control when paired with MOSFETs. Use Value: 600 V V_RRM matches common PV string voltages; 140 A I_FSM (1 ms) withstands grid fault surges.
Industrial SMPS	AC-DC Adapter
Use Scenario: Input bridge or output freewheeling in 30–100 W industrial power supplies with wide ambient range. IC Role / Device Role / Timing Role: High-reliability rectifier handling continuous 2 A load and transient overcurrents. Use Value: 150°C T_JMAX and MSL 1 support conformal coating and sealed enclosures without derating penalties.	Use Scenario: Output rectification in universal-input (90–264 VAC) wall adapters for consumer electronics. IC Role / Device Role / Timing Role: Cost-optimized discrete rectifier replacing higher-V_F alternatives in space-constrained designs. Use Value: Thin SMA package fits 8.5 mm × 5.5 mm footprints; halogen-free and RoHS compliance meets global regulatory requirements.

DC-DC Converter

Switching Inverter

Use Scenario: Secondary-side rectification in isolated flyback or forward converters delivering 5–24 V outputs.

IC Role / Device Role / Timing Role: Power rectifier converting high-frequency AC from transformer secondary into regulated DC.

Use Value: 0.98 V V_F at 2 A reduces conduction loss by ~15% vs. legacy 1.15 V diodes, improving efficiency at light-to-moderate loads.

Use Scenario: Output stage rectification in solar microinverters operating with 400–600 V DC link.

IC Role / Device Role / Timing Role: Unidirectional current path enabling bidirectional energy flow control when paired with MOSFETs.

Use Value: 600 V V_RRM matches common PV string voltages; 140 A I_FSM (1 ms) withstands grid fault surges.

Industrial SMPS

AC-DC Adapter

Use Scenario: Input bridge or output freewheeling in 30–100 W industrial power supplies with wide ambient range.

IC Role / Device Role / Timing Role: High-reliability rectifier handling continuous 2 A load and transient overcurrents.

Use Value: 150°C T_JMAX and MSL 1 support conformal coating and sealed enclosures without derating penalties.

Use Scenario: Output rectification in universal-input (90–264 VAC) wall adapters for consumer electronics.

IC Role / Device Role / Timing Role: Cost-optimized discrete rectifier replacing higher-V_F alternatives in space-constrained designs.

Use Value: Thin SMA package fits 8.5 mm × 5.5 mm footprints; halogen-free and RoHS compliance meets global regulatory requirements.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
STTH2R06	V_RRM = 600 V, I_F = 2 A, V_F = 1.15 V @ 2 A - higher forward drop than S2JAL's 0.98 V	Higher conduction loss limits use in thermally constrained adapters	Preferred where STMicro's qualification pedigree is required for automotive-adjacent industrial use
ES2J	V_RRM = 600 V, I_F = 2 A, V_F = 0.95 V @ 2 A - slightly lower V_F, but R_θJA = 85 °C/W vs. S2JAL's 74 °C/W	Less effective thermal dissipation on same PCB layout	Better for ultra-low-loss priority in low-power designs; less suitable for sustained 2 A operation at elevated ambient

Compared with STTH2R06 and ES2J, the S2JAL offers the best balance of low V_F (0.98 V), competitive thermal resistance (74 °C/W), and MSL 1 process readiness-making it optimal for high-volume, cost-sensitive, and thermally demanding SMPS designs.

Availability

S2JAL is available at Aetrix Electronics and suitable for DC-DC converters, switching inverters, and industrial SMPS requiring stable component supply, full traceability, and long-term lifecycle support.

Supply support for S2JAL 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 power and protection markets since 1979.

The S2JAL belongs to TSC's S2xAL standard rectifier family, engineered for high-efficiency, high-reliability AC/DC and DC/DC power conversion in consumer, industrial, and computing applications.

FAQ

What is the maximum junction temperature rating for the S2JAL?

The S2JAL has a maximum junction temperature (T_JMAX) of +150°C, verified per absolute maximum ratings in the official Taiwan Semiconductor datasheet Version B2103. This allows reliable operation in enclosed industrial power supplies and high-ambient environments without forced cooling. The S2JAL maintains specified electrical performance up to this limit when thermal design respects R_θJL = 14 °C/W and R_θJA = 74 °C/W on a 5 mm × 5 mm Cu pad.

Does the S2JAL have a defined moisture sensitivity level (MSL) for SMT assembly?

Yes, the S2JAL is rated MSL Level 1 per J-STD-020, meaning it has unlimited floor life and can be reflowed without pre-baking. This is confirmed in the "Features" section of the Taiwan Semiconductor datasheet. The S2JAL's MSL 1 status simplifies manufacturing logistics and eliminates bake cycles, reducing cost and risk of damage during high-volume SMT assembly.

What is the forward voltage of the S2JAL at 2 A and 125°C?

The S2JAL exhibits a typical forward voltage of 0.88 V and a maximum of 0.98 V at 2 A and 125°C, as specified in the Electrical Specifications table (Version B2103). This reduced V_F versus room-temperature operation reflects improved carrier injection at elevated temperature. Designers using the S2JAL in thermally stressed environments can rely on this value for accurate loss modeling.

Is the S2JAL RoHS-compliant and halogen-free?

Yes, the S2JAL is both RoHS-compliant and halogen-free per IEC 61249-2-21, as explicitly stated in the "Features" section of the Taiwan Semiconductor datasheet. The device uses lead-free matte tin plating and halogen-free molding compound meeting UL 94V-0. These certifications ensure the S2JAL meets environmental compliance requirements for global electronics markets including EU, China, and South Korea.

How does the S2JAL's junction capacitance affect high-frequency switching performance?

The S2JAL has a typical junction capacitance (C_J) of 12 pF measured at 1 MHz and 4.0 V reverse bias. This low C_J minimizes reverse recovery charge and associated switching losses in converters operating above 100 kHz. When used in the S2JAL, designers benefit from reduced EMI generation and faster turn-off transitions compared to higher-C_J rectifiers-critical for compact, high-efficiency SMPS designs.

S2JAL 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):: 600 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 @ 600 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

S2JAL FAQ

1.How can I place an order for S2JAL through Aetrix?

Please submit a Request for Quotation (RFQ) for S2JAL 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 S2JAL reliable?

The price and inventory of S2JAL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for S2JAL is usually 5 days.

3.What payment methods are accepted for S2JAL?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for S2JAL transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for S2JAL?

S2JAL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your S2JAL 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 S2JAL?

For technical support, including S2JAL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your S2JAL requirements.

6.How does Aetrix verify that S2JAL is sourced from the original manufacturer or authorized distributors?

All S2JAL 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 S2JAL meets industry standards.

7.What is the process for return or replacement of S2JAL?

All S2JAL units undergo pre-shipment inspection (PSI). If there is an issue with S2JAL, 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 S2JAL part is unused and in its original packaging.

Return procedure for S2JAL:

1.Submit a request within 90 days.

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

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