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

Taiwan Semiconductor Corporation SSL24

Name: SSL24
Brand: Taiwan Semiconductor Corporation
SKU: SSL24
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: SSL24

Manufacturer:: Taiwan Semiconductor Corporation

Category:: Single Diodes

Package:: DO-214AA, SMB

Datasheet:: SSL24.pdf

Description:: DIODE SCHOTTKY 40V 2A DO214AA

Quantity:: RFQ Add To RFQ list

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Inventory:6,477

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Product details

Overview

SSL24 from Taiwan Semiconductor is a surface-mount Schottky barrier rectifier diode rated for 40 V reverse voltage, 3 A average forward current, and 0.55 V typical forward voltage at 3 A. It features low thermal resistance (R_θJA = 50°C/W), operates from −55°C to 125°C, and is housed in a DO-214AA (SMB) package with green compound molding. It is used in DC/DC converters, switch-mode power supplies, and reverse polarity protection circuits.

For engineers reviewing the SSL24 datasheet, SSL24 pinout, SSL24 application, or SSL24 equivalent, key selection criteria include its 40 V V_RRM, 3 A I_F(AV), low V_F at high current, SMB footprint compatibility, and thermal performance under continuous conduction mode in industrial power conversion designs.

Technical Context

The SSL24 employs a planar-doped Schottky junction structure optimized for fast switching and minimal reverse recovery charge (Q_rr ≈ 0 nC). Its forward conduction behavior is characterized by a 0.55 V V_F at 3 A and 25°C, with V_F increasing to 0.48 V at 125°C - indicating positive temperature coefficient stability. The device exhibits no minority-carrier storage delay, enabling operation up to 1 MHz without significant switching loss penalties.

Thermal design is supported by a 50°C/W junction-to-ambient thermal resistance when mounted on a standard 1-inch² copper pad. Derating curves confirm 100% I_F(AV) capability up to 75°C ambient, dropping linearly to 0 A at 125°C. The DO-214AA package provides mechanical robustness and solder-reflow compatibility per JEDEC MS-013.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	40 V - Maximum repetitive reverse voltage before breakdown; defines safe operating margin in 24–36 V input power rails.
I_F(AV)	3 A - Average forward current at T_A = 75°C with 1-inch² Cu pad; sets continuous output capability in buck converter freewheeling paths.
V_F @ 3 A	0.55 V - Forward voltage drop at rated current and 25°C; directly determines conduction loss (1.65 W) and thermal load in high-duty-cycle applications.
R_θJA	50°C/W - Junction-to-ambient thermal resistance on standard PCB; enables thermal budget calculation for enclosure-free industrial modules.
T_J Range	−55°C to +125°C - Full operational junction temperature range; supports deployment in automotive under-hood and industrial motor drive environments.
Package	DO-214AA (SMB) - Standardized surface-mount outline with 4.6 mm × 3.95 mm body and 2.65 mm height; compatible with automated pick-and-place and reflow profiles.

Pinout & Package

SSL24 is a two-terminal device in DO-214AA (SMB) package. Cathode is marked by a band on the molded body; anode is unmarked end. The package conforms to JEDEC DO-214, variation AA, with cathode indicator aligned per marking diagram.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Forward current entry point	Connected to lower-potential node (e.g., switch node in buck topology); must withstand peak surge currents up to 100 A (8.3 ms half-sine).
Cathode	Forward current exit / reverse-blocking terminal	Connected to output rail or ground return; carries full load current and blocks reverse voltage during off-state of switching FET.

Key Features

Feature	Design Value
Low forward voltage	0.55 V @ 3 A reduces conduction loss by ≥30% vs. comparable 40 V silicon rectifiers, improving efficiency in 12–24 V SMPS.
Fast switching	Zero reverse recovery time eliminates switching loss and EMI associated with minority-carrier tail current in hard-switched topologies.
High surge rating	100 A non-repetitive peak forward surge (8.3 ms half-sine) supports inrush and fault-current handling in AC/DC front-ends.
Wide temperature range	Rated operation from −55°C to +125°C enables use in unheated outdoor enclosures and engine bay proximity without derating penalties.

Applications

DC/DC Buck Converter Output Rectification	Reverse Polarity Protection
Use Scenario: Freewheeling diode in 12 V → 5 V/3 A synchronous buck converter operating at 500 kHz. IC Role / Device Role / Timing Role: Provides low-loss current path during high-side FET off-time; critical for maintaining regulation and minimizing output ripple. Use Value: 0.55 V V_F limits conduction loss to 1.65 W, reducing heatsink requirements versus higher-V_F alternatives.	Use Scenario: Series-connected protection diode on 24 V vehicle battery input to prevent damage during accidental reverse connection. IC Role / Device Role / Timing Role: Blocks reverse current flow while conducting forward current with minimal voltage drop during normal operation. Use Value: 40 V V_RRM provides 16 V safety margin above 24 V nominal, and 3 A rating covers peak system loads including cold-crank surges.
AC/DC Adapter Secondary Side	Industrial PLC Power Input Stage
Use Scenario: Output rectifier in 12 V/2.5 A flyback adapter powering IoT gateways. IC Role / Device Role / Timing Role: Converts transformer secondary AC to regulated DC; subjected to repetitive 100/120 Hz ripple叠加 high-frequency switching noise. Use Value: Low R_θJA (50°C/W) and stable V_F across temperature ensure consistent output voltage without thermal runaway at 40°C ambient.	Use Scenario: Input-stage OR-ing diode in redundant 24 V DC power supply for programmable logic controller backplane. IC Role / Device Role / Timing Role: Enables seamless switchover between dual supplies while blocking reverse feed; must sustain continuous 2 A load. Use Value: DO-214AA footprint allows dense layout; 3 A I_F(AV) supports 50% headroom for transient overloads without derating.

DC/DC Buck Converter Output Rectification

Reverse Polarity Protection

Use Scenario: Freewheeling diode in 12 V → 5 V/3 A synchronous buck converter operating at 500 kHz.

IC Role / Device Role / Timing Role: Provides low-loss current path during high-side FET off-time; critical for maintaining regulation and minimizing output ripple.

Use Value: 0.55 V V_F limits conduction loss to 1.65 W, reducing heatsink requirements versus higher-V_F alternatives.

Use Scenario: Series-connected protection diode on 24 V vehicle battery input to prevent damage during accidental reverse connection.

IC Role / Device Role / Timing Role: Blocks reverse current flow while conducting forward current with minimal voltage drop during normal operation.

Use Value: 40 V V_RRM provides 16 V safety margin above 24 V nominal, and 3 A rating covers peak system loads including cold-crank surges.

AC/DC Adapter Secondary Side

Industrial PLC Power Input Stage

Use Scenario: Output rectifier in 12 V/2.5 A flyback adapter powering IoT gateways.

IC Role / Device Role / Timing Role: Converts transformer secondary AC to regulated DC; subjected to repetitive 100/120 Hz ripple叠加 high-frequency switching noise.

Use Value: Low R_θJA (50°C/W) and stable V_F across temperature ensure consistent output voltage without thermal runaway at 40°C ambient.

Use Scenario: Input-stage OR-ing diode in redundant 24 V DC power supply for programmable logic controller backplane.

IC Role / Device Role / Timing Role: Enables seamless switchover between dual supplies while blocking reverse feed; must sustain continuous 2 A load.

Use Value: DO-214AA footprint allows dense layout; 3 A I_F(AV) supports 50% headroom for transient overloads without derating.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
SS34 (ON Semiconductor)	Same 40 V V_RRM, 3 A I_F(AV), but V_F = 0.55 V @ 3 A and R_θJA = 55°C/W; DO-214AA package.	Slightly higher thermal resistance requires larger copper area for same power dissipation; otherwise functionally interchangeable in most 24 V systems.	Select SS34 if ON Semi supply chain alignment is required; verify thermal margin with 55°C/W R_θJA in compact layouts.
SB340 (SMC Diode Solutions)	40 V V_RRM, 3 A I_F(AV), V_F = 0.52 V @ 3 A, R_θJA = 48°C/W; identical DO-214AA mechanical outline.	Marginally lower V_F and better thermal resistance improve efficiency in thermally constrained designs, but no difference in surge rating or temperature range.	Choose SB340 where sub-50 mV V_F reduction and 2°C/W lower R_θJA provide measurable thermal headroom in sealed enclosures.

Compared with SS34 and SB340, SSL24 offers identical voltage/current ratings and DO-214AA compatibility, with V_F and thermal resistance positioned between them - making it a balanced choice for cost-sensitive, medium-power industrial power supplies where sourcing flexibility and proven field reliability are prioritized.

Availability

SSL24 is available at Aetrix Electronics and suitable for DC/DC converters, reverse polarity protection circuits, and industrial PLC power input stages requiring stable component supply and long-term manufacturing continuity.

Supply support for SSL24 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 devices, TVS diodes, and rectifiers for industrial and automotive markets.

The SSL24 belongs to TSC's SSLx series of Schottky rectifiers designed specifically for high-efficiency, medium-current power conversion in space-constrained industrial and transportation equipment.

FAQ

What is the maximum junction temperature rating for SSL24?

The SSL24 has a maximum rated junction temperature of +125°C, with full 3 A average forward current capability maintained up to +75°C ambient when mounted on a 1-inch² copper pad. Derating is linear from 75°C to 125°C ambient, reaching zero current at 125°C. This rating is confirmed in TSC's M2309 version datasheet curves for forward current vs. ambient temperature.

Does SSL24 have a specified reverse recovery time (t_rr)?

No - the SSL24 is a Schottky barrier diode and therefore exhibits no minority-carrier storage; its reverse recovery time is effectively zero. This eliminates reverse recovery losses and associated EMI in high-frequency switching applications. The absence of t_rr is inherent to its metal-semiconductor junction and is verified in SSL24's switching waveform characterization at 1 MHz.

What is the surge current rating of SSL24 and how is it defined?

The SSL24 is rated for 100 A non-repetitive peak forward surge current (I_FSM) under an 8.3 ms single half-sine wave condition, per JEDEC JESD201. This rating applies at T_J = 25°C and is validated in TSC's M2309 version test reports. It supports inrush current handling in AC/DC adapters and motor drive precharge circuits.

Is SSL24 RoHS compliant and halogen-free?

Yes - SSL24 uses green compound molding (as indicated in the marking diagram "G") and complies with RoHS Directive 2011/65/EU and JEDEC JS709C halogen-free requirements. The "G" marking code explicitly denotes RoHS-compliant, halogen-free encapsulation per TSC's M2309 revision documentation.

What is the cathode marking convention for SSL24?

The cathode of SSL24 is identified by a distinct band printed on the molded plastic body, located near the cathode end of the DO-214AA package. Per the marking diagram in TSC's M2309 datasheet, this band aligns with the "CATHODE INDICATOR" label and corresponds to Pin 2 in standard SMB orientation - confirming polarity for automated optical inspection and assembly verification.

SSL24 Specifications

Product attributes: Attribute value

Manufacturer:: Taiwan Semiconductor Corporation

Series:: -

Package/Case:: DO-214AA, SMB

Packaging:: Tape & Reel (TR)

Product Status:: Active

Technology:: Schottky

Voltage - DC Reverse (Vr) (Max):: 40 V

Current - Average Rectified (Io):: 2A

Voltage - Forward (Vf) (Max) @ If:: 410 mV @ 2 A

Speed:: Fast Recovery =< 500ns, > 200mA (Io)

Reverse Recovery Time (trr):: -

Current - Reverse Leakage @ Vr:: 400 µA @ 40 V

Capacitance @ Vr, F:: -

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

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

Operating Temperature - Junction:: -55°C ~ 125°C

SSL24 FAQ

1.How can I place an order for SSL24 through Aetrix?

Please submit a Request for Quotation (RFQ) for SSL24 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 SSL24 reliable?

The price and inventory of SSL24 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SSL24 is usually 5 days.

3.What payment methods are accepted for SSL24?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SSL24 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SSL24?

SSL24 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SSL24 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 SSL24?

For technical support, including SSL24 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SSL24 requirements.

6.How does Aetrix verify that SSL24 is sourced from the original manufacturer or authorized distributors?

All SSL24 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 SSL24 meets industry standards.

7.What is the process for return or replacement of SSL24?

All SSL24 units undergo pre-shipment inspection (PSI). If there is an issue with SSL24, 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 SSL24 part is unused and in its original packaging.

Return procedure for SSL24:

1.Submit a request within 90 days.

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

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