OSTHM028081 Terminal Block - Equivalent & Substitute Parts

Part Overview

The OSTHM028081 is a 2-position wire-to-board terminal block manufactured by On Shore Technology Inc., designed for vertical mounting with press-fit installation on PCBs. This component features a 10mm (0.394") pitch and supports wire gauges from 12-28 AWG with a rated current of 8A at 250V. The product is currently obsolete, necessitating identification of functionally equivalent alternatives for ongoing design support and procurement.

Substiute Parts

OSTHM028081

On Shore Technology Inc.In Stock: 931OSTHM028081 Datasheet

Current PartRFQ

HM0280810000G

Amphenol AnytekIn Stock: 861HM0280810000G Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the OSTHM028081 is determined by strict alignment of the following critical parameters:

• Electrical Compatibility: Current rating (8A), voltage rating (250V), and wire gauge acceptance (12-28 AWG) must match or exceed the original specification
• Mechanical Compatibility: Pitch (10.00mm), number of positions (2), and mating orientation (vertical with board) must be identical
• Termination Method: Wire termination type (screwless push-in spring) must be functionally equivalent
• Environmental Compliance: RoHS3 compliance and operating temperature range must support the application requirements
• Mounting Configuration: Press-fit mounting capability must be maintained for PCB integration

The substitute part HM0280810000G by Amphenol Anytek meets all critical substitution criteria while offering enhanced product status (active) and extended operating temperature range.

Parameter Comparison

Engineering Selection Recommendations

The HM0280810000G from Amphenol Anytek is a direct functional equivalent for the obsolete OSTHM028081. Selection of this substitute is supported by:

• Electrical Equivalence: All electrical parameters (current, voltage, wire gauge) are identical, ensuring circuit-level compatibility
• Mechanical Equivalence: Pitch, position count, and vertical board orientation are identical, enabling direct PCB footprint compatibility
• Compliance Alignment: Both components maintain ROHS3 compliance and REACH unaffected status, meeting regulatory requirements
• Enhanced Reliability: The substitute offers extended operating temperature range (-40°C to 115°C versus -30°C to 105°C) and tin-plated brass contacts, providing improved environmental tolerance and corrosion resistance
• Active Product Status: The substitute is actively manufactured, ensuring long-term availability and supply chain stability

The mounting type difference (through hole capability added to press-fit) does not compromise substitution, as press-fit functionality is retained and the component remains compatible with existing PCB designs.

Frequently Asked Questions (FAQ)

Q: Can HM0280810000G be used as a direct replacement for OSTHM028081 on existing PCBs?

A: Yes. The substitute maintains identical pitch (10mm), position count (2), and vertical board orientation. Press-fit mounting capability is preserved, enabling direct PCB footprint compatibility without design modification.

Q: What is the significance of the extended operating temperature range in the substitute?

A: The HM0280810000G operates from -40°C to 115°C compared to the original -30°C to 105°C. This extended range provides greater thermal margin for applications subject to extreme environmental conditions, though it does not alter electrical performance within the original specification range.

Q: Does the tin plating on the substitute contacts affect compatibility?

A: No. Tin plating on brass contacts is a material enhancement that improves corrosion resistance and contact reliability. It does not alter electrical characteristics or mechanical fit and is compatible with the original design.

Q: Why is the original part listed as obsolete?

A: Product obsolescence typically results from manufacturer discontinuation decisions. The HM0280810000G substitute is actively manufactured by Amphenol Anytek, ensuring continued availability for new designs and legacy system support.

Q: Are there any packaging or inventory considerations for the substitute?

A: The substitute is available in bulk packaging with 752 pieces in stock. Verify packaging requirements against your procurement specifications, as the original part was listed without specific packaging designation.

Q: What compliance certifications apply to both parts?

A: Both the original OSTHM028081 and substitute HM0280810000G are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements for electronic component procurement in regulated markets.