SS29L Equivalent & Substitute Parts

Part Overview

The SS29L is a 2A, 90V 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 remains in inventory with 15,200 pieces available as new original stock. Due to its discontinued design status, identifying functionally equivalent substitute components is essential for ongoing production support, maintenance applications, and design continuity where existing systems utilize this diode.

Substiute Parts

SS29L

Taiwan Semiconductor CorporationIn Stock: 15300SS29L Datasheet

Current PartRFQ

SS210LW

Taiwan Semiconductor CorporationIn Stock: 28029SS210LW Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SS29L is determined by the following critical electrical and mechanical parameters:

Electrical Compatibility Criteria:

• Voltage - DC Reverse (Vr) rating must equal or exceed 90V
• Current - Average Rectified (Io) must equal or exceed 2A
• Voltage - Forward (Vf) characteristics must remain within acceptable operating margins
• Fast recovery speed performance (≤ 500ns, > 200mA) must be maintained
• Operating temperature range must encompass -55°C to 150°C

Mechanical Compatibility Criteria:

• Surface mount technology requirement
• Package footprint compatibility with SOD-123 or equivalent form factor
• RoHS3 compliance for regulatory alignment

The SS210LW qualifies as a direct substitute based on these parameters. It maintains the 2A current rating, exceeds the 90V reverse voltage requirement at 100V, preserves the 850mV forward voltage characteristic, retains fast recovery speed performance, and operates within the required temperature range. The SOD-123W package provides mechanical compatibility with SOD-123 footprints in standard PCB designs.

Parameter Comparison

Engineering Selection Recommendations

The SS210LW is the designated manufacturer-recommended substitute for the SS29L. Selection of this alternative component is supported by the following engineering factors:

Product Status Alignment: The SS210LW maintains active product status, ensuring long-term availability and continued manufacturing support. This contrasts with the SS29L's "Not For New Designs" classification, which indicates limited future availability.

Regulatory Compliance: Both components maintain ROHS3 compliance and REACH unaffected status, ensuring compatibility with current environmental and regulatory requirements across manufacturing jurisdictions.

Electrical Performance: The SS210LW provides enhanced reverse voltage capability (100V versus 90V), delivering improved design margin in applications where reverse voltage stress may approach the component's maximum rating. The forward voltage characteristic remains identical at 850mV @ 2A, preserving circuit performance. Reverse leakage current is reduced to 20µA @ 100V, indicating improved semiconductor quality and lower standby power consumption.

Mechanical Integration: The SOD-123W package maintains footprint compatibility with standard SOD-123 PCB layouts, requiring no circuit board redesign for component substitution in existing applications.

Frequently Asked Questions (FAQ)

Q: Can the SS210LW directly replace the SS29L without PCB modifications?

A: Yes. The SOD-123W package maintains mechanical and electrical compatibility with SOD-123 footprints. No circuit board redesign is required for component substitution in existing layouts.

Q: What is the significance of the 10V increase in reverse voltage rating (90V to 100V)?

A: The higher reverse voltage rating of the SS210LW (100V) provides additional design margin in applications where reverse bias conditions may occur. This enhanced rating does not negatively impact circuit performance and improves component reliability under transient voltage stress conditions.

Q: How does the reduced reverse leakage current (20µA versus 100µA) affect circuit operation?

A: Lower reverse leakage current in the SS210LW reduces standby power consumption and improves circuit efficiency. This characteristic is particularly beneficial in low-power applications and does not introduce any compatibility issues with existing circuit designs.

Q: Are the forward voltage characteristics identical between these components?

A: Yes. Both the SS29L and SS210LW maintain identical forward voltage specifications of 850mV @ 2A, ensuring equivalent voltage drop performance in rectification circuits.

Q: What is the difference between SOD-123 and SOD-123W packages?

A: SOD-123W is a wide-body variant of the SOD-123 package. Both packages maintain compatible footprints for standard PCB designs. The SOD-123W designation indicates the wider body dimension of the substitute component.

Q: Why is the SS29L 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 production support and maintenance applications. The SS210LW is the active alternative for new design implementations.

Q: Are there any thermal performance differences between these components?

A: Both components operate within the identical temperature range of -55°C to 150°C junction temperature. No thermal performance degradation occurs with substitution.