SS23-LTP Schottky Diode Equivalent & Substitute Parts

Part Overview

The SS23-LTP is a 30V, 2A 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. The diode is designed for fast recovery applications with a maximum forward voltage of 550 mV at 2A and operates across a junction temperature range of -55°C to 125°C. Due to its obsolescence status, identification of functionally equivalent substitute components is necessary for ongoing production support, maintenance, and legacy system repairs.

Substiute Parts

SS23-LTP

Micro Commercial CoIn Stock: 149290SS23-LTP Datasheet

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PMEG3020CEP,115

NXP SemiconductorsIn Stock: 383650PMEG3020CEP,115 Datasheet

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SR23_R1_00001

Panjit International Inc.In Stock: 7461SR23_R1_00001 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the SS23-LTP is determined by strict equivalence across the following electrical and mechanical parameters:

Mandatory Matching Criteria:

• Voltage - DC Reverse (Vr) (Max): 30 V
• Current - Average Rectified (Io): 2 A
• Technology: Schottky
• Speed: Fast Recovery ≤ 500ns, > 200mA (Io)
• Mounting Type: Surface Mount
• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level (MSL): 1 (Unlimited)

Package Compatibility: Substitutes must be compatible with DO-214AC (SMA) footprints or functionally equivalent surface mount packages that accommodate the same circuit board layout requirements.

Two substitute parts meet these criteria with the following distinctions:

1. SR23_R1_00001 (Panjit International Inc.) — Identical package (DO-214AC, SMA), matching all electrical specifications, Active product status
2. PMEG3020CEP,115 (NXP Semiconductors) — Alternative package (SOD-128), matching core electrical specifications, Active product status, requires PCB layout modification

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: SR23_R1_00001 (Panjit International Inc.)

The SR23_R1_00001 is the direct equivalent substitute for the SS23-LTP. Both components share identical package geometry (DO-214AC, SMA), matching electrical specifications, and equivalent operating temperature ranges (-55°C to 125°C). The SR23_R1_00001 maintains Active product status, ensuring long-term availability and supply chain continuity. This substitute requires no PCB layout modifications and provides a one-to-one replacement path. The forward voltage specification of 500 mV at 2A is lower than the original 550 mV, indicating improved performance characteristics. Reverse leakage current is 200 µA at 30V, which is lower than the original 500 µA, further demonstrating enhanced electrical performance.

Secondary Substitute: PMEG3020CEP,115 (NXP Semiconductors)

The PMEG3020CEP,115 meets all core electrical requirements (30V reverse voltage, 2A average rectified current, fast recovery Schottky technology) and maintains Active product status. However, this component uses a SOD-128 package instead of DO-214AC, requiring PCB layout modification. The forward voltage specification of 420 mV at 2A is significantly lower than the original, indicating superior efficiency. The maximum junction temperature rating of 150°C exceeds the original specification. Reverse leakage current of 1.5 mA at 30V is higher than both the original and the primary substitute. This component is suitable for applications where package footprint modification is acceptable and where the enhanced thermal rating provides system-level benefits.

Compliance Considerations:

Both substitute parts maintain ROHS3 compliance and MSL Level 1 (Unlimited) moisture sensitivity ratings, ensuring compatibility with standard manufacturing and storage protocols. The SR23_R1_00001 carries REACH Unaffected status matching the original part, while the PMEG3020CEP,115 is REACH Affected, requiring compliance verification within specific supply chain contexts.

Frequently Asked Questions (FAQ)

Q: Can the SR23_R1_00001 be used as a direct replacement for the SS23-LTP without PCB modifications?

A: Yes. The SR23_R1_00001 uses the identical DO-214AC (SMA) package and shares all critical electrical specifications. No PCB layout changes are required for this substitution.

Q: What are the key differences between the SR23_R1_00001 and PMEG3020CEP,115 substitutes?

A: The primary difference is package format. The SR23_R1_00001 maintains the original DO-214AC (SMA) package, while the PMEG3020CEP,115 uses SOD-128, requiring PCB redesign. The PMEG3020CEP,115 offers lower forward voltage (420 mV vs. 500 mV) and higher maximum junction temperature (150°C vs. 125°C), but exhibits higher reverse leakage current (1.5 mA vs. 200 µA).

Q: Why is the SS23-LTP marked "Not For New Designs"?

A: This designation 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 maintenance applications.

Q: Are both substitute parts available in the same packaging format as the original?

A: The SR23_R1_00001 is available in Tape & Reel (TR) packaging, matching the original SS23-LTP format. The PMEG3020CEP,115 is supplied in Bulk packaging, which may require different handling and storage procedures.

Q: What is the impact of the lower forward voltage in the substitute parts?

A: Lower forward voltage (500 mV for SR23_R1_00001 and 420 mV for PMEG3020CEP,115 compared to 550 mV for SS23-LTP) indicates reduced power dissipation and improved efficiency in rectification applications. This is a beneficial characteristic that does not compromise circuit functionality.

Q: Can the PMEG3020CEP,115 be used in existing SS23-LTP circuit boards?

A: No. The PMEG3020CEP,115 uses a SOD-128 package, which has a different footprint than the DO-214AC (SMA) package of the original part. PCB layout modification is required for this substitution.

Q: What is the significance of the reverse leakage current differences among the three parts?

A: Reverse leakage current affects standby power consumption and circuit performance in high-impedance applications. The SS23-LTP specifies 500 µA, the SR23_R1_00001 specifies 200 µA, and the PMEG3020CEP,115 specifies 1.5 mA at 30V. Lower leakage is generally preferable for low-power applications.

Q: Are all three parts RoHS3 compliant?

A: Yes. The SS23-LTP, SR23_R1_00001, and PMEG3020CEP,115 are all ROHS3 compliant, meeting environmental and regulatory requirements for electronic component manufacturing and distribution.