PLED18SW Equivalent & Substitute Parts

Part Overview

The PLED18SW is a Lighting Protection LED Shunt rated at 18V, manufactured by Littelfuse Inc. as part of the PLED® series. This surface mount component is designed for LED protection applications using LED shunt technology. The PLED18SW is currently listed as obsolete, making identification of suitable substitute parts essential for ongoing design support and component procurement.

Substiute Parts

PLED18SW

Littelfuse Inc.In Stock: 1649PLED18SW Datasheet

Current PartRFQ

PLED18S

Littelfuse Inc.In Stock: 11778PLED18S Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the PLED18SW is determined by strict equivalence across the following critical parameters:

• Voltage Rating: 18V
• Voltage - Clamping: 33V
• Technology: LED Shunt
• Number of Circuits: 1
• Mounting Type: Surface Mount
• Package / Case: DO-214AA, SMB
• Series: PLED®

The PLED18S qualifies as a direct substitute based on identical electrical specifications and mechanical compatibility. Both parts share the same voltage ratings, clamping characteristics, circuit configuration, and package footprint. The primary distinction is product status: PLED18S is active and currently in production, whereas PLED18SW is obsolete.

Parameter Comparison

Engineering Selection Recommendations

The PLED18S is the appropriate substitute for the obsolete PLED18SW. Both components are manufactured by Littelfuse Inc. and maintain identical electrical and mechanical specifications. The PLED18S carries active product status with current manufacturing support, ensuring long-term availability and supply chain continuity.

Both parts meet ROHS3 compliance requirements and share equivalent moisture sensitivity ratings. The transition from PLED18SW to PLED18S requires no circuit redesign, as pin configuration, voltage ratings, and package footprint remain unchanged.

Frequently Asked Questions (FAQ)

Q: Can PLED18S be used as a direct replacement for PLED18SW in existing designs?

A: Yes. The PLED18S is electrically and mechanically equivalent to the PLED18SW. Both components share identical voltage ratings (18V), clamping voltage (33V), circuit count (1), and DO-214AA SMB package specifications. No circuit modifications are required.

Q: What is the primary reason for substituting PLED18SW with PLED18S?

A: The PLED18SW is obsolete and no longer in production. The PLED18S is the active equivalent part from the same manufacturer and series, ensuring continued component availability and manufacturing support.

Q: Are there any compliance or certification differences between these parts?

A: No. Both PLED18SW and PLED18S are ROHS3 compliant with identical moisture sensitivity levels (MSL 1 - Unlimited). Compliance certifications are equivalent.

Q: Is the package footprint identical between PLED18SW and PLED18S?

A: Yes. Both parts use the DO-214AA SMB package, ensuring PCB layout compatibility without requiring design modifications.

Q: What applications are these LED shunt protection components suitable for?

A: Both PLED18SW and PLED18S are designed for LED protection applications, providing transient voltage suppression and overvoltage protection in LED circuits operating at 18V nominal voltage.