SS23HE3-LTP Equivalent & Substitute Parts

Part Overview

The SS23HE3-LTP is a Schottky diode rated for 30 V DC reverse voltage and 2 A average rectified current in a surface mount DO-214AC (SMA) package. This component is classified as obsolete, necessitating identification of active equivalent parts for ongoing design requirements and procurement needs. The fast recovery characteristic (≤500ns at >200mA) and low forward voltage drop (550 mV @ 2 A) define its primary application parameters.

Substiute Parts

SS23HE3-LTP

Micro Commercial CoIn Stock: 861SS23HE3-LTP Datasheet

Current PartRFQ

SS24HE3-LTP

Micro Commercial CoIn Stock: 5213SS24HE3-LTP Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the obsolete SS23HE3-LTP is based on the following electrical and mechanical compatibility criteria:

Mandatory Matching Parameters:

• Technology: Schottky diode
• Package / Case: DO-214AC (SMA)
• Mounting Type: Surface Mount
• Operating Temperature Range: -55°C to 125°C
• Current - Average Rectified (Io): 2 A
• Voltage - Forward (Vf) (Max) @ If: 550 mV @ 2 A
• Speed: Fast Recovery ≤500ns, >200mA (Io)
• Current - Reverse Leakage @ Vr: 100 µA

Allowable Parameter Variance:

• Voltage - DC Reverse (Vr) (Max): Equal to or greater than 30 V
• Capacitance @ Vr, F: Equal to or less than 90pF @ 4V, 1MHz

The SS24HE3-LTP qualifies as a direct substitute based on these criteria. The higher reverse voltage rating (40 V versus 30 V) provides enhanced voltage margin while maintaining all other electrical and mechanical specifications within acceptable tolerance.

Parameter Comparison

Engineering Selection Recommendations

The SS24HE3-LTP is the qualified substitute for the obsolete SS23HE3-LTP. Selection is based on the following factors:

Product Status: The SS24HE3-LTP maintains active product status with 5181 pieces in stock, ensuring long-term availability and supply chain continuity compared to the obsolete SS23HE3-LTP.

Compliance and Certification: The SS24HE3-LTP carries AEC-Q101 automotive qualification and ROHS3 compliance, providing enhanced reliability documentation and regulatory alignment. Both parts maintain REACH Unaffected status and EAR99 ECCN classification.

Electrical Equivalence: All critical electrical parameters remain identical or improved. The forward voltage drop, recovery speed, and leakage current specifications are maintained. The increased reverse voltage rating (40 V versus 30 V) provides additional design margin without performance degradation.

Packaging and Thermal: Identical DO-214AC (SMA) surface mount package and operating temperature range (-55°C to 125°C) ensure direct PCB compatibility and thermal performance equivalence.

Moisture Sensitivity: The SS24HE3-LTP carries MSL 1 (Unlimited) rating, indicating superior moisture handling characteristics suitable for extended storage and varied environmental conditions.

Frequently Asked Questions (FAQ)

Q: Can the SS24HE3-LTP be used as a direct replacement for the SS23HE3-LTP in existing designs?

A: Yes. The SS24HE3-LTP is electrically and mechanically compatible with the SS23HE3-LTP. All critical parameters including forward voltage, recovery speed, current rating, and package type are identical. The higher reverse voltage rating (40 V versus 30 V) provides additional voltage margin and does not introduce incompatibility.

Q: What is the primary difference between these two parts?

A: The SS24HE3-LTP has a higher maximum reverse voltage rating of 40 V compared to the SS23HE3-LTP at 30 V. The SS24HE3-LTP is also an active product with automotive qualification (AEC-Q101) and ROHS3 compliance, whereas the SS23HE3-LTP is obsolete.

Q: Are there any circuit design considerations when substituting the SS24HE3-LTP for the SS23HE3-LTP?

A: No design modifications are required. The identical forward voltage drop (550 mV @ 2 A), recovery speed (≤500ns), and current rating (2 A) ensure equivalent circuit performance. The higher reverse voltage rating does not affect circuit operation in applications designed for 30 V operation.

Q: Is the DO-214AC (SMA) package identical between both parts?

A: Yes. Both the SS23HE3-LTP and SS24HE3-LTP use the DO-214AC (SMA) surface mount package. PCB footprints, reflow profiles, and assembly processes remain unchanged.

Q: What is the operating temperature range for both parts?

A: Both parts operate across the identical junction temperature range of -55°C to 125°C, ensuring thermal performance equivalence across all environmental conditions.

Q: Does the SS24HE3-LTP require different handling or storage procedures?

A: The SS24HE3-LTP carries MSL 1 (Unlimited) moisture sensitivity level, which is superior to standard MSL ratings. This allows extended storage without moisture bake-out procedures and provides greater flexibility in handling and logistics.

Q: Are there compliance or certification differences between the two parts?

A: The SS24HE3-LTP includes AEC-Q101 automotive qualification and ROHS3 compliance, providing enhanced reliability documentation. Both parts maintain REACH Unaffected status and EAR99 ECCN classification. The SS23HE3-LTP does not list these certifications.