OSTHM129081 Equivalent & Substitute Parts

Part Overview

The OSTHM129081 is a 12-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 7.5mm pitch, supports wire gauges from 12-28 AWG, and operates at 8A/250V with a temperature range of -30°C to 105°C. The product is classified as obsolete, making identification of active equivalent parts essential for ongoing design support and procurement continuity.

Substiute Parts

OSTHM129081

On Shore Technology Inc.In Stock: 1077OSTHM129081 Datasheet

Current PartRFQ

HM1290810000G

Amphenol AnytekIn Stock: 922HM1290810000G Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the OSTHM129081 is determined by strict equivalence across the following critical parameters:

• 12-position configuration with 7.5mm pitch spacing
• Vertical with board mating orientation
• 8A current and 250V voltage ratings
• 12-28 AWG wire gauge compatibility
• Screwless push-in spring wire termination
• Thermoplastic housing with brass contacts
• ROHS3 compliance and MSL 1 rating

The substitute part HM1290810000G from Amphenol Anytek meets all functional and electrical requirements while offering enhanced operating temperature range and active product status.

Parameter Comparison

Engineering Selection Recommendations

The HM1290810000G serves as a direct functional equivalent to the obsolete OSTHM129081. Both components maintain identical electrical specifications (8A/250V), mechanical configuration (12 positions at 7.5mm pitch), and wire termination methodology. The substitute part offers an extended operating temperature range (-40°C to 115°C versus -30°C to 105°C) and maintains full ROHS3 compliance with MSL 1 rating.

The primary distinction is product status: OSTHM129081 is obsolete while HM1290810000G is active, ensuring long-term availability and supply chain continuity. The HM1290810000G also provides dual mounting capability (through-hole and press-fit) compared to press-fit only on the original part, offering design flexibility without compromising electrical or mechanical performance.

Frequently Asked Questions (FAQ)

Q: Can HM1290810000G replace OSTHM129081 in existing designs?

A: Yes. Both parts share identical electrical ratings (8A/250V), position count (12), pitch (7.5mm), wire gauge range (12-28 AWG), and wire termination method (screwless push-in spring). The substitute maintains equivalent mechanical and thermal performance within the original operating envelope.

Q: What is the difference in mounting between these parts?

A: OSTHM129081 supports press-fit mounting only. HM1290810000G supports both through-hole and press-fit mounting, providing additional PCB design options without affecting electrical performance.

Q: Does the extended temperature range of HM1290810000G affect compatibility?

A: No. The extended range (-40°C to 115°C on the substitute versus -30°C to 105°C on the original) represents an enhancement that maintains full backward compatibility. Designs operating within the original temperature specification will function identically.

Q: Are both parts RoHS compliant?

A: Yes. Both OSTHM129081 and HM1290810000G are ROHS3 compliant with MSL 1 (unlimited moisture sensitivity level), meeting equivalent environmental and regulatory requirements.

Q: What is the significance of tin plating on the HM1290810000G contacts?

A: The tin plating on brass contacts in the HM1290810000G provides enhanced corrosion resistance compared to unplated brass in the original part. This represents a material improvement that does not affect electrical performance or compatibility.