OSTHM044081 Equivalent & Substitute Parts

Part Overview

The OSTHM044081 is a 4-position wire-to-board terminal block manufactured by On Shore Technology Inc., designed for vertical mounting with 0.300" (7.62mm) pitch spacing. This component features press-fit termination and screwless push-in spring wire connections, supporting currents up to 8A at 250V. The product is currently obsolete, making identification of compatible substitute parts essential for ongoing system maintenance and new design implementations where equivalent functionality is required.

Key Parameters

Parameter	Value
Positions Per Level	4
Pitch	0.300" (7.62mm)
Mating Orientation	Vertical with Board
Current Rating	8 A
Voltage Rating	250 V
Wire Gauge	12-28 AWG
Mounting Type	Press Fit
Wire Termination	Screwless - Leg Spring, Push-In Spring
Operating Temperature Range	-30°C ~ 105°C
Housing Material	Thermoplastic
Contact Material	Brass
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the OSTHM044081 is determined by strict equivalence across the following critical parameters:

Electrical Compatibility: Positions per level (4), pitch spacing (0.300"/7.62mm), current rating (8A minimum), voltage rating (250V minimum), and wire gauge acceptance (12-28 AWG)
Mechanical Compatibility: Mating orientation (vertical with board), wire termination method (screwless push-in spring), and mounting approach (press-fit capable)
Environmental Compliance: Operating temperature range, RoHS3 compliance, and MSL rating

The substitute part HM0440810000G by Amphenol Anytek meets these criteria with enhanced specifications in voltage rating (300V) and operating temperature range (-40°C ~ 115°C), while maintaining full compatibility with the original part's core functional requirements.

Parameter Comparison

Parameter	OSTHM044081 (On Shore Technology)	HM0440810000G (Amphenol Anytek)
Positions Per Level	4	4
Pitch	0.300" (7.62mm)	0.300" (7.62mm)
Mating Orientation	Vertical with Board	Vertical with Board
Current Rating	8 A	8 A
Voltage Rating	250 V	300 V
Wire Gauge	12-28 AWG	12-28 AWG
Mounting Type	Press Fit	Through Hole, Press-Fit
Wire Termination	Screwless - Leg Spring, Push-In Spring	Screwless - Leg Spring, Push-In Spring
Operating Temperature Range	-30°C ~ 105°C	-40°C ~ 115°C
Housing Material	Thermoplastic	Thermoplastic
Contact Material - Plating	Brass	Brass - Tin Plated
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
MSL Rating	1 (Unlimited)	1 (Unlimited)
Product Status	Obsolete	Active

Engineering Selection Recommendations

The HM0440810000G serves as a direct functional equivalent to the OSTHM044081 for applications requiring 4-position, 7.62mm pitch terminal block connectivity. Both parts maintain ROHS3 compliance and unlimited moisture sensitivity ratings, ensuring regulatory alignment across legacy and current designs.

The substitute part offers enhanced electrical performance with 300V voltage rating versus the original 250V specification, and extended operating temperature range (-40°C to 115°C versus -30°C to 105°C). These improvements provide additional design margin without compromising backward compatibility.

The HM0440810000G supports both through-hole and press-fit mounting, whereas the OSTHM044081 is limited to press-fit. This expanded mounting flexibility accommodates diverse PCB assembly processes. The tin-plated brass contact material in the substitute part provides improved corrosion resistance compared to unplated brass in the original.

Product status transition from obsolete to active ensures long-term availability and supply chain continuity for the HM0440810000G.

Frequently Asked Questions (FAQ)

Q: Can HM0440810000G replace OSTHM044081 in existing designs?

A: Yes. Both parts share identical pitch spacing (7.62mm), position count (4), current rating (8A), wire gauge range (12-28 AWG), and wire termination method (screwless push-in spring). The substitute meets or exceeds all electrical and mechanical requirements of the original.

Q: What are the key differences between these parts?

A: The HM0440810000G provides higher voltage rating (300V vs. 250V), extended temperature range (-40°C to 115°C vs. -30°C to 105°C), dual mounting capability (through-hole and press-fit vs. press-fit only), and tin-plated contacts for enhanced corrosion resistance. The original OSTHM044081 is obsolete; the substitute is active production.

Q: Are there packaging considerations for substitution?

A: The OSTHM044081 packaging information is not specified in available data. The HM0440810000G is supplied in bulk packaging. Verify packaging requirements for your procurement process.

Q: Do both parts meet the same compliance standards?

A: Yes. Both parts are ROHS3 compliant, REACH unaffected, and carry MSL rating 1 (unlimited moisture sensitivity). Regulatory alignment is maintained across substitution.

Q: Is the mounting type difference significant?

A: The OSTHM044081 uses press-fit mounting exclusively. The HM0440810000G supports both through-hole and press-fit mounting. If your PCB design uses press-fit pads, the substitute functions identically. Through-hole capability in the substitute provides additional design flexibility without affecting press-fit applications.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message