SS23L Equivalent & Substitute Parts

Part Overview

The SS23L is a 2A, 30V Schottky rectifier diode manufactured by Taiwan Semiconductor Corporation, housed in a SOD-123 surface mount package. This component is classified as "Not For New Designs," indicating it has reached end-of-life status. The product status necessitates identification of active equivalent and substitute parts to support ongoing maintenance, repair, and legacy system requirements.

Substiute Parts

SS23L

Taiwan Semiconductor CorporationIn Stock: 2071SS23L Datasheet

Current PartRFQ

SS24LW

Taiwan Semiconductor CorporationIn Stock: 28433SS24LW Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SS23L is determined by the following critical electrical and mechanical parameters:

Electrical Compatibility Criteria:

• Current rating: Substitute must support minimum 2A average rectified current
• Voltage rating: Substitute must support minimum 30V DC reverse voltage
• Technology: Schottky diode technology maintained for fast recovery characteristics
• Forward voltage: Substitute forward voltage must not exceed application circuit tolerances
• Reverse leakage: Substitute leakage current characteristics must be compatible with circuit requirements

Mechanical Compatibility Criteria:

• Mounting type: Surface mount configuration required
• Package compatibility: SOD-123 or equivalent footprint packages acceptable
• Temperature range: Operating junction temperature range -55°C to 125°C maintained

The SS24LW qualifies as a substitute based on these parameters. It maintains Schottky technology, supports the required 2A current rating, and exceeds the 30V voltage requirement at 40V. The component is housed in SOD-123W package with compatible surface mount configuration and identical operating temperature range.

Parameter Comparison

Engineering Selection Recommendations

The SS24LW is the designated substitute for the SS23L based on the following engineering criteria:

Product Status Alignment: The SS24LW maintains Active product status, ensuring continued availability and manufacturing support. The SS23L is classified as "Not For New Designs," making the transition to an active equivalent necessary for supply chain continuity.

Regulatory Compliance: Both components maintain ROHS3 compliance and REACH Unaffected status, ensuring compatibility with current environmental and regulatory requirements. The SS24LW includes Moisture Sensitivity Level (MSL) 1 classification, indicating unlimited shelf life without moisture control measures.

Electrical Performance: The SS24LW provides enhanced voltage rating (40V versus 30V), supporting applications with higher voltage margins. The current rating remains equivalent at 2A. Forward voltage increases by 50mV at rated current, which is within typical circuit tolerance ranges for Schottky rectifier applications. Reverse leakage current is reduced by 50% at the higher voltage rating, indicating improved device characteristics.

Mechanical Compatibility: The SOD-123W package is a surface mount variant compatible with SOD-123 footprints. Both components share identical operating temperature ranges and mounting methodologies.

Frequently Asked Questions (FAQ)

Q: Can the SS24LW directly replace the SS23L in existing circuit designs?

A: The SS24LW is electrically compatible with the SS23L for applications operating at or below 30V. The higher voltage rating (40V) provides additional safety margin. The 50mV increase in forward voltage at 2A must be evaluated within specific circuit requirements. Package compatibility exists between SOD-123 and SOD-123W footprints for surface mount applications.

Q: What are the key differences between SS23L and SS24LW?

A: The primary differences are voltage rating (30V to 40V), forward voltage (500mV to 550mV at 2A), reverse leakage current (400µA to 200µA), package designation (SOD-123 to SOD-123W), and product status (Not For New Designs to Active). Current rating and technology remain identical.

Q: Why is the SS23L classified as "Not For New Designs"?

A: This classification indicates the component has reached end-of-life status and is no longer recommended for new product development. Existing inventory remains available for legacy system support and repair applications.

Q: Are there packaging considerations when substituting SS24LW for SS23L?

A: The SOD-123W package is a surface mount variant of the SOD-123 package. Both are compatible with standard surface mount assembly processes. Verify PCB footprint compatibility with the specific SOD-123W land pattern before implementation.

Q: Does the SS24LW meet the same regulatory requirements as the SS23L?

A: Both components are ROHS3 compliant and REACH Unaffected. The SS24LW includes MSL 1 classification, providing unlimited moisture sensitivity protection without special storage requirements.

Q: What is the impact of the 50mV forward voltage increase on circuit performance?

A: The forward voltage increase from 500mV to 550mV at 2A represents a 10% change. Circuit impact depends on application-specific voltage drop tolerances. Rectifier circuits with voltage regulation typically accommodate this variation without performance degradation.