SS12-LTP Schottky Diode Equivalent & Substitute Parts

Part Overview

The SS12-LTP is a 20V, 1A Schottky rectifier diode manufactured by Micro Commercial Co in a DO-214AC (SMA) surface mount package. This component is classified as "Not For New Designs," indicating it has reached end-of-life status. Identifying equivalent and substitute parts is necessary for design continuity, legacy system support, and procurement flexibility when the primary part becomes unavailable.

Substiute Parts

SS12-LTP

Micro Commercial CoIn Stock: 10174SS12-LTP Datasheet

Current PartRFQ

PMEG2010BER,115

Nexperia USA Inc.In Stock: 17006PMEG2010BER,115 Datasheet

SimilarRFQ

SS12

Taiwan Semiconductor CorporationIn Stock: 65317SS12 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of Schottky rectifier diodes is determined by electrical and mechanical compatibility across the following critical parameters:

Electrical Compatibility Criteria:

• Voltage - DC Reverse (Vr) (Max): Must equal or exceed 20V
• Current - Average Rectified (Io): Must equal or exceed 1A
• Voltage - Forward (Vf) (Max) @ If: Must not exceed 500 mV @ 1A for functional equivalence
• Speed: Must maintain Fast Recovery ≤ 500ns, > 200mA (Io)
• Operating Temperature - Junction: Must support the required thermal range

Mechanical Compatibility Criteria:

• Mounting Type: Surface Mount required
• Package / Case: DO-214AC (SMA) or functionally equivalent surface mount packages

Compliance Requirements:

• RoHS3 Compliant
• Moisture Sensitivity Level (MSL): 1 (Unlimited)

Substitute parts identified below meet these criteria within the specified electrical and mechanical parameters.

Parameter Comparison

Engineering Selection Recommendations

SS12 (Taiwan Semiconductor Corporation) - Primary Substitute:

The SS12 from Taiwan Semiconductor Corporation is the direct electrical and mechanical equivalent to the SS12-LTP. Both components share identical package geometry (DO-214AC/SMA), voltage ratings (20V), current ratings (1A), and forward voltage characteristics (500 mV @ 1A). The SS12 maintains Active product status, ensuring long-term availability and supply chain stability. Operating temperature range extends to 125°C maximum, which is within the 150°C specification of the original part. This substitute is suitable for direct replacement in existing designs without PCB layout modifications.

PMEG2010BER,115 (Nexperia USA Inc.) - Alternative Substitute:

The PMEG2010BER,115 meets all electrical specifications with superior performance characteristics: forward voltage is reduced to 450 mV @ 1A (50 mV improvement), and reverse leakage current is significantly lower at 50 µA @ 20V compared to 500 µA in the original part. The component maintains Active product status and ROHS3 compliance. The package differs (SOD-123W versus DO-214AC/SMA), requiring PCB layout redesign and footprint modification. This substitute is appropriate when design flexibility permits package change and when improved thermal efficiency is beneficial.

Both substitutes maintain ROHS3 compliance and unlimited moisture sensitivity level (MSL 1), ensuring regulatory and environmental compatibility with the original SS12-LTP specification.

Frequently Asked Questions (FAQ)

Q: Can the SS12 from Taiwan Semiconductor Corporation replace the SS12-LTP directly on the PCB?

A: Yes. The SS12 shares identical package geometry (DO-214AC/SMA) and electrical specifications with the SS12-LTP. Direct PCB replacement is possible without layout modifications. Both components have the same footprint and pin configuration.

Q: What is the primary difference between the PMEG2010BER,115 and the SS12-LTP?

A: The PMEG2010BER,115 uses a different surface mount package (SOD-123W) compared to the SS12-LTP (DO-214AC/SMA). While electrical ratings are compatible, the physical footprint differs, requiring PCB redesign. The PMEG2010BER,115 offers lower forward voltage (450 mV versus 500 mV) and lower reverse leakage current (50 µA versus 500 µA).

Q: Are all three parts RoHS3 compliant?

A: Yes. The SS12-LTP, PMEG2010BER,115, and SS12 are all ROHS3 compliant with unlimited moisture sensitivity level (MSL 1).

Q: Why is the SS12-LTP marked "Not For New Designs"?

A: This designation indicates the part has reached end-of-life status. New designs should utilize the SS12 (Taiwan Semiconductor Corporation) or PMEG2010BER,115 (Nexperia USA Inc.), both of which carry Active product status and ensure long-term supply availability.

Q: What is the operating temperature difference between the substitutes?

A: The SS12-LTP and PMEG2010BER,115 both support maximum junction temperatures of 150°C. The SS12 from Taiwan Semiconductor Corporation supports a maximum of 125°C. For applications requiring operation above 125°C, the PMEG2010BER,115 is the appropriate choice.

Q: Can the PMEG2010BER,115 be used in existing designs without modification?

A: No. The PMEG2010BER,115 requires PCB layout modification due to its different package (SOD-123W versus DO-214AC/SMA). Footprint redesign and revalidation are necessary before implementation.

Q: What are the reverse leakage current specifications for each part?

A: SS12-LTP: 500 µA @ 20V; PMEG2010BER,115: 50 µA @ 20V; SS12: 200 µA @ 20V. Lower reverse leakage current reduces power dissipation in standby conditions.