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

Taiwan Semiconductor Corporation S2DAL

Name: S2DAL
Brand: Taiwan Semiconductor Corporation
SKU: S2DAL
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: S2DAL

Manufacturer:: Taiwan Semiconductor Corporation

Category:: Single Diodes

Package:: DO-221AC, SMA Flat Leads

Datasheet:: S2DAL.pdf

Description:: DIODE GEN PURP 200V 2A THIN SMA

Quantity:: RFQ Add To RFQ list

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Inventory:2,260

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Product details

Overview

S2DAL from Taiwan Semiconductor is a 2 A, 200 V standard surface-mount rectifier diode in a Thin SMA package, featuring glass-passivated junction, 50 A surge rating, and 150 °C max junction temperature-used in DC-DC converters and switching-mode inverters.

For engineers reviewing the S2DAL datasheet, S2DAL pinout, S2DAL application, or S2DAL equivalent, key selection criteria include repetitive peak reverse voltage (200 V), forward voltage at 2 A (≤1.10 V), thermal resistance (R_θJL = 14 °C/W), moisture sensitivity level (MSL 1), and RoHS/halogen-free compliance.

Technical Context

The S2DAL is a single-die, standard recovery rectifier with unidirectional conduction and cathode-band polarity marking. Its glass-passivated junction ensures stable reverse leakage (<1 µA at 25 °C) and robustness against humidity and mechanical stress during reflow.

Thermal performance is characterized by R_θJL = 14 °C/W and R_θJA = 74 °C/W on a 5 mm × 5 mm Cu pad PCB. It supports automated placement and meets JESD201 Class 2 whisker resistance and UL 94V-0 flammability requirements.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	200 V - Maximum repetitive reverse voltage before breakdown; defines safe operating range in flyback or bridge rectification.
I_F	2 A continuous - Rated average forward current; determines heatsink or trace width requirements in steady-state operation.
I_FSM	50 A (8.3 ms) - Peak non-repetitive surge capability; enables handling of inrush or transient overloads without failure.
V_F @ 2 A, 25°C	≤1.10 V - Forward voltage drop at full rated current; directly impacts conduction loss and thermal design.
T_J max	+150 °C - Maximum junction temperature; sets upper limit for ambient + power dissipation margin in enclosed designs.
R_θJL	14 °C/W - Junction-to-lead thermal resistance; critical for estimating die temperature rise when leads act as primary heat path.
C_J	12 pF @ 1 MHz, 4 V - Junction capacitance; influences high-frequency switching noise and EMI in SMPS snubber or gate-drive circuits.

Pinout & Package

Package: Thin SMA (Surface Mount Axial), low-profile, matte tin-plated leads, cathode indicated by band. Complies with JEDEC TO-277A outline.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Forward current entry point	Connected to lower-potential side (e.g., transformer secondary center-tap or switch node return); must handle full I_F and I_FSM.
Cathode	Forward current exit / reverse-blocking terminal	Marked by band; connects to output rail or filter capacitor; sustains full V_RRM in off-state and carries load current in on-state.

Key Features

Feature	Design Value
Glass-passivated junction	Enables stable IR <1 µA at 25°C and reliable long-term operation under humid or thermally cycled conditions.
MSL Level 1	Allows unlimited floor life and standard reflow without baking-reduces manufacturing overhead in high-volume SMT lines.
Thin SMA package	0.029 g weight and low profile (<1.1 mm height) support compact, lightweight power stage layouts in space-constrained modules.
RoHS & halogen-free	Meets IEC 61249-2-21 and EU RoHS Directive 2011/65/EU-enables global market access and green product certification.
JESD201 Class 2 whisker resistance	Prevents tin whisker growth under thermal stress, eliminating latent field failures in automotive or industrial control applications.

Applications

DC–DC Converter	Switching Inverter
Use Scenario: Secondary-side rectification in isolated buck-boost or forward converters delivering 12–48 V outputs. IC Role / Device Role / Timing Role: Unidirectional power conversion element; conducts only during positive half-cycle of transformer secondary voltage. Use Value: Low V_F (≤1.10 V) minimizes conduction loss at 2 A, improving efficiency over alternatives with higher forward drop.	Use Scenario: Output rectification in single-phase H-bridge inverters for motor drives or UPS systems. IC Role / Device Role / Timing Role: Freewheeling and commutation path for inductive loads; blocks reverse voltage during switching transitions. Use Value: 200 V V_RRM and 50 A I_FSM safely absorb inductive kickback and handle short-circuit transients.
Industrial Power Supply	LED Driver Circuit
Use Scenario: Input rectification in AC-DC front-ends for programmable logic controllers (PLCs) and sensor interface modules. IC Role / Device Role / Timing Role: Standard recovery rectifier converting 100–240 VAC input to bulk DC; operates at line frequency. Use Value: MSL Level 1 and JESD201 Class 2 ensure reliability across extended temperature cycling and long service life in factory environments.	Use Scenario: Constant-current rectification in offline LED drivers powering streetlights or commercial fixtures. IC Role / Device Role / Timing Role: Main output rectifier in flyback-derived topologies; handles pulsed 2 A loads with minimal thermal derating. Use Value: R_θJL = 14 °C/W allows direct lead-to-PCB heat transfer, reducing need for thermal vias or copper pours in cost-sensitive lighting PCBs.

DC–DC Converter

Switching Inverter

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

IC Role / Device Role / Timing Role: Unidirectional power conversion element; conducts only during positive half-cycle of transformer secondary voltage.

Use Value: Low V_F (≤1.10 V) minimizes conduction loss at 2 A, improving efficiency over alternatives with higher forward drop.

Use Scenario: Output rectification in single-phase H-bridge inverters for motor drives or UPS systems.

IC Role / Device Role / Timing Role: Freewheeling and commutation path for inductive loads; blocks reverse voltage during switching transitions.

Use Value: 200 V V_RRM and 50 A I_FSM safely absorb inductive kickback and handle short-circuit transients.

Industrial Power Supply

LED Driver Circuit

Use Scenario: Input rectification in AC-DC front-ends for programmable logic controllers (PLCs) and sensor interface modules.

IC Role / Device Role / Timing Role: Standard recovery rectifier converting 100–240 VAC input to bulk DC; operates at line frequency.

Use Value: MSL Level 1 and JESD201 Class 2 ensure reliability across extended temperature cycling and long service life in factory environments.

Use Scenario: Constant-current rectification in offline LED drivers powering streetlights or commercial fixtures.

IC Role / Device Role / Timing Role: Main output rectifier in flyback-derived topologies; handles pulsed 2 A loads with minimal thermal derating.

Use Value: R_θJL = 14 °C/W allows direct lead-to-PCB heat transfer, reducing need for thermal vias or copper pours in cost-sensitive lighting PCBs.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
ON Semiconductor MURS220T3G	Ultrafast recovery (t_rr ≈ 35 ns vs. S2DAL's ~2 µs), same 2 A / 200 V rating, SMA package.	Better suited for high-frequency SMPS (>100 kHz); S2DAL preferred where cost, thermal stability, or simplicity outweigh speed needs.	Select MURS220T3G when minimizing switching loss dominates; choose S2DAL for general-purpose, cost-sensitive, or thermally constrained designs.
Vishay VS-2EY20-M3/5AT	Same 2 A / 200 V rating, but in DO-214AC (SMA) with slightly higher V_F (1.15 V max) and lower I_FSM (40 A).	Compatible footprint but requires verification of surge margin in high-inrush applications.	Acceptable drop-in alternative if surge headroom >10 A is not required; confirm layout compatibility with Vishay's dimensional tolerances.

Compared with MURS220T3G and VS-2EY20-M3/5AT, the S2DAL offers superior surge robustness (50 A), lower forward voltage at 2 A, and tighter thermal resistance-making it optimal for industrial DC-DC and inverter outputs where reliability under transient stress is prioritized over ultrafast switching.

Availability

S2DAL is available at Aetrix Electronics and suitable for DC–DC converters, switching inverters, and industrial power supplies requiring stable component supply, long-lifecycle availability, and consistent parametric performance across production batches.

Supply support for S2DAL 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 industrial, computing, and consumer markets since 1979.

The S2DAL belongs to TSC's S2xAL standard rectifier family, designed specifically for cost-effective, high-reliability AC/DC and DC/DC power conversion in space- and thermally constrained surface-mount applications.

FAQ

What is the maximum junction temperature rating for the S2DAL?

The S2DAL has a maximum junction temperature (T_J) rating of +150 °C. This value defines the upper thermal limit for safe operation under continuous forward conduction. Exceeding this temperature risks permanent degradation of the glass-passivated junction. Derating curves in the S2DAL datasheet show allowable I_F reduction above 75 °C ambient, and proper PCB copper area must be maintained to keep T_J ≤ 150 °C under worst-case load and ambient conditions.

Is the S2DAL RoHS and halogen-free compliant?

Yes, the S2DAL is fully RoHS compliant per EU Directive 2011/65/EU and halogen-free according to IEC 61249-2-21. These certifications are verified in TSC's official documentation and confirmed on the product's material declaration sheet. The matte tin-plated leads and UL 94V-0 molding compound further support environmental compliance and end-product certification requirements for consumer, industrial, and medical-grade equipment.

What does the "DAL" suffix indicate in S2DAL?

The "DAL" suffix in S2DAL identifies it as the 200 V variant within TSC's S2xAL rectifier family, where "x" encodes the V_RRM rating: D = 200 V, G = 400 V, J = 600 V, K = 800 V, M = 1000 V. This coding is standardized across the family and appears in the device marking, ordering code, and absolute maximum ratings table-ensuring unambiguous identification during procurement and assembly.

Can the S2DAL replace a 1N4007 in a new design?

No-the S2DAL is not a direct replacement for the 1N4007. While both are general-purpose rectifiers, the 1N4007 is through-hole (DO-41) with 1 A rating and 1000 V V_RRM, whereas the S2DAL is surface-mount (Thin SMA), rated 2 A / 200 V. Substituting requires verifying voltage margin, current demand, thermal path, and PCB footprint compatibility. For 200 V, 2 A SMT applications, the S2DAL is appropriate; for legacy 1N4007 use cases, consider TSC's S1DAL or other axial-leaded equivalents.

What is the moisture sensitivity level (MSL) of the S2DAL?

The S2DAL has a moisture sensitivity level (MSL) of Level 1 per J-STD-020, meaning it has unlimited floor life and may be subjected to standard reflow profiles without prior baking. This eliminates moisture-related popcorning risk during soldering and simplifies handling logistics in high-volume SMT production-unlike MSL 3 or higher devices that require dry-packaging and strict time-bound assembly windows.

S2DAL 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):: 200 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 @ 200 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

S2DAL FAQ

1.How can I place an order for S2DAL through Aetrix?

Please submit a Request for Quotation (RFQ) for S2DAL 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 S2DAL reliable?

The price and inventory of S2DAL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for S2DAL is usually 5 days.

3.What payment methods are accepted for S2DAL?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for S2DAL transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for S2DAL?

S2DAL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your S2DAL 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 S2DAL?

For technical support, including S2DAL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your S2DAL requirements.

6.How does Aetrix verify that S2DAL is sourced from the original manufacturer or authorized distributors?

All S2DAL 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 S2DAL meets industry standards.

7.What is the process for return or replacement of S2DAL?

All S2DAL units undergo pre-shipment inspection (PSI). If there is an issue with S2DAL, 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 S2DAL part is unused and in its original packaging.

Return procedure for S2DAL:

1.Submit a request within 90 days.

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

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