SS18HE3-LTP Equivalent & Substitute Parts Reference

Part Overview

The SS18HE3-LTP is a Schottky diode in the Diodes, Rectifiers category, specified for 80 V reverse voltage, 1A average rectified current, and fast recovery characteristics in a surface-mount DO-214AC (SMA) package. This product is marked as Obsolete, making it necessary to identify substitute or replacement models with matching or superior parameters to enable continuity in electronic designs and manufacturing.

Substiute Parts

SS18HE3-LTP

Micro Commercial CoIn Stock: 1223SS18HE3-LTP Datasheet

Current PartRFQ

SS110HE3-LTP

Micro Commercial CoIn Stock: 11119SS110HE3-LTP Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute diode models are identified by matching the core electrical and mechanical characteristics necessary for interchange in the Diodes, Rectifiers category. The key substitution parameters include:

• Technology type: Schottky
• Maximum reverse voltage (Vr)
• Average rectified current (Io)
• Maximum forward voltage drop (Vf) at rated current
• Maximum reverse leakage current (Ir) at specified Vr
• Junction capacitance and switching speed classifications
• Mounting type and physical package compatibility
• Operating junction temperature range

Only components meeting or exceeding these explicit criteria are considered equivalent or substitute candidates.

Parameter Comparison

Engineering Selection Recommendations

When replacing the obsolete SS18HE3-LTP, only parts with equal or higher maximum reverse voltage, identical average rectified current rating, matching speed, and compatible mechanical outline should be selected. The substitute SS110HE3-LTP meets key requirements and holds additional compliance with ROHS3 and AEC-Q101 qualifications. Its product status is Active, and it is suitable for direct substitution in existing designs that used the SS18HE3-LTP within the declared specifications.

Frequently Asked Questions (FAQ)

Q1: What criteria determine if SS110HE3-LTP is a valid substitute for SS18HE3-LTP?
A1: Valid substitution is based on identical diode technology, equal or higher voltage and current ratings, similar forward voltage drop and leakage, matching switching speed, mechanical package compatibility, and operating temperature range.

Q2: Is the package and mounting fully compatible between SS18HE3-LTP and SS110HE3-LTP?
A2: Both diodes are provided in the DO-214AC (SMA) surface-mount package, ensuring direct drop-in replacement compatibility for PCB layout.

Q3: Are there differences in product compliance or qualification status that should be considered?
A3: The SS110HE3-LTP is ROHS3 compliant and AEC-Q101 qualified, whereas SS18HE3-LTP lists REACH Unaffected. The substitute’s certifications allow its use in automotive and lead-free applications where required.

Q4: Is there any change in electrical performance when using the SS110HE3-LTP instead of SS18HE3-LTP?
A4: The SS110HE3-LTP provides an increased reverse voltage rating (100 V vs. 80 V) while maintaining other core parameters, matching electrical performance for most applications within the provided specifications.

Q5: Does the change to SS110HE3-LTP affect design requalification or inventory management?
A5: SS110HE3-LTP’s active status and compliance certifications facilitate ongoing sourcing and usage without changing the PCB footprint or mounting processes.