Equivalent & Substitute Parts for H-178C LED Holder

Part Overview

The H-178C is an active LED holder designed for T1 3/4 form factor LEDs, manufactured by Bivar Inc. This nylon-based standoff component provides mechanical support for 5mm LED packages with a 0.350" (8.89mm) length specification. The product remains in active production status with full ROHS3 compliance and unlimited moisture sensitivity capability. Alternative equivalent parts are necessary when specific material requirements, inventory availability, or mechanical height tolerances necessitate component substitution while maintaining functional compatibility.

Substiute Parts

H-178C

Bivar Inc.In Stock: 805H-178C Datasheet

Current PartRFQ

ELM 1-350

Bivar Inc.In Stock: 12886ELM 1-350 Datasheet

Parametric EquivalentRFQ

ELM 3-335

Bivar Inc.In Stock: 14732ELM 3-335 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the H-178C is determined by the following critical parameters: LED form factor (T1 3/4), mechanical length specification, color (Black), and regulatory compliance status (ROHS3). The identified equivalent parts (ELM 1-350 and ELM 3-335) maintain full compatibility with these core functional requirements. Both substitutes share identical LED form factor specifications and color properties. The primary distinction lies in material composition (PVC versus Nylon) and length tolerance variations. The ELM 1-350 provides exact length matching at 0.350" (8.89mm), while the ELM 3-335 operates at a reduced length of 0.335" (8.51mm), suitable for applications requiring marginally reduced standoff height.

Parameter Comparison

Engineering Selection Recommendations

All three parts maintain active product status with ROHS3 compliance and unlimited moisture sensitivity capability, confirming regulatory suitability across applications. Selection between H-178C, ELM 1-350, and ELM 3-335 should be based on material specification and dimensional tolerance requirements. The H-178C nylon construction and ELM 1-350 deliver identical 0.350" mechanical length, differing only in substrate material. The ELM 3-335 provides a 0.015" (0.38mm) reduction in standoff height while maintaining all other functional specifications. Inventory levels (H-178C: 770 units; ELM 1-350: 12,862 units; ELM 3-335: 14,653 units) reflect availability across the product line.

Frequently Asked Questions (FAQ)

What determines if a part can substitute for the H-178C? The core substitution criteria are T1 3/4 LED form factor compatibility, mechanical length specification, black color, and ROHS3 compliance status. Both ELM 1-350 and ELM 3-335 satisfy these requirements.

How do the substitute parts differ from the H-178C? The ELM 1-350 matches the H-178C in length (0.350") but uses PVC material instead of nylon. The ELM 3-335 uses PVC material and operates at a shorter length of 0.335" (8.51mm), making it suitable for designs requiring reduced standoff height.

What is the significance of the length difference between ELM 3-335 and the H-178C? The 0.015" (0.38mm) length reduction in the ELM 3-335 affects the mechanical spacing of the LED from the PCB. This substitution is appropriate only when design clearances accommodate the shorter standoff dimension.

Are all parts suitable for moisture-sensitive applications? All three parts carry Moisture Sensitivity Level 1 (Unlimited), indicating unrestricted use in standard environmental conditions without special moisture handling protocols.

Does material composition affect electrical performance? The H-178C nylon and substitute parts' PVC construction are both non-conductive insulators. Material selection impacts mechanical properties and thermal characteristics rather than electrical function.

What packaging format is used for all parts? All three parts are supplied in bag packaging, maintaining consistent receiving and storage procedures across substitutions.