OSTHM144081 Equivalent & Substitute Parts

Part Overview

The OSTHM144081 is a 14-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 technology and accommodates wire gauges from 12-28 AWG with a rated current of 8 A at 250 V.

The OSTHM144081 carries an Obsolete product status. Identifying equivalent substitute parts is essential for ongoing system maintenance, repair, and production continuity when original stock becomes unavailable.

Key Parameters

Parameter	Value
Positions Per Level	14
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 - Plating	Brass
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts for the OSTHM144081 must maintain electrical and mechanical compatibility based on the following critical parameters:

Electrical Compatibility: Substitute parts must support the same wire gauge range (12-28 AWG), maintain equivalent current-carrying capacity (8 A minimum), and meet or exceed the voltage rating (250 V minimum).

Mechanical Compatibility: Substitute parts must feature identical pitch spacing (0.300" / 7.62mm), the same number of positions (14), vertical board orientation, and compatible mounting technology (press-fit or through-hole with press-fit capability).

Termination Compatibility: Wire termination method must be screwless spring-based (leg spring or push-in spring) to ensure functional equivalence in circuit applications.

Environmental & Compliance: Substitute parts must maintain ROHS3 compliance and operate within acceptable temperature ranges for the intended application environment.

Parameter Comparison

Parameter	OSTHM144081	HM1440810000G	Compatibility
Manufacturer	On Shore Technology Inc.	Amphenol Anytek	Different manufacturer
Positions Per Level	14	14	Match
Pitch	0.300" (7.62mm)	0.300" (7.62mm)	Match
Mating Orientation	Vertical with Board	Vertical with Board	Match
Current Rating	8 A	8 A	Match
Voltage Rating	250 V	300 V	Substitute exceeds requirement
Wire Gauge	12-28 AWG	12-28 AWG	Match
Mounting Type	Press Fit	Through Hole, Press-Fit	Substitute supports both methods
Wire Termination	Screwless - Leg Spring, Push-In Spring	Screwless - Leg Spring, Push-In Spring	Match
Operating Temperature Range	-30°C ~ 105°C	-40°C ~ 115°C	Substitute exceeds range
Housing Material	Thermoplastic	Thermoplastic	Match
Contact Material - Plating	Brass	Brass - Tin Plated	Substitute adds tin plating
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Match
Product Status	Obsolete	Active	Substitute is in active production

Engineering Selection Recommendations

The HM1440810000G from Amphenol Anytek qualifies as a direct substitute for the OSTHM144081 based on matching electrical and mechanical specifications. Both components maintain ROHS3 compliance and support identical wire gauge, pitch, position count, and termination methodology.

The HM1440810000G offers enhanced specifications in voltage rating (300 V versus 250 V) and operating temperature range (-40°C ~ 115°C versus -30°C ~ 105°C), providing additional design margin for demanding applications. The addition of tin plating on brass contacts in the substitute part improves corrosion resistance compared to unplated brass.

The primary distinction is mounting capability: the HM1440810000G supports both through-hole and press-fit mounting, whereas the OSTHM144081 is limited to press-fit. This expanded mounting flexibility in the substitute part does not compromise compatibility with existing press-fit PCB designs.

The active production status of the HM1440810000G ensures long-term availability and supply chain continuity, addressing the obsolescence of the original OSTHM144081.

Frequently Asked Questions (FAQ)

Q: Can the HM1440810000G be used as a direct replacement for the OSTHM144081 in existing designs?

A: Yes. Both components share identical pitch spacing (7.62mm), position count (14), wire gauge support (12-28 AWG), current rating (8 A), and screwless spring termination method. The substitute part meets or exceeds all electrical and mechanical requirements of the original component.

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

A: The OSTHM144081 uses press-fit mounting exclusively. The HM1440810000G supports both through-hole and press-fit mounting options. For existing PCB designs utilizing press-fit technology, the HM1440810000G functions identically to the original part.

Q: Does the tin plating on the HM1440810000G contacts affect compatibility?

A: No. Tin plating on brass contacts is a standard enhancement that improves corrosion resistance and contact reliability. This modification does not alter electrical performance or mechanical fit characteristics.

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

A: Both components maintain ROHS3 compliance, REACH Unaffected status, and identical ECCN and HTSUS classifications. No compliance barriers exist for substitution.

Q: Why does the HM1440810000G have a higher voltage rating?

A: The 300 V rating of the HM1440810000G represents enhanced design specifications compared to the 250 V rating of the OSTHM144081. This higher rating provides additional safety margin and does not create incompatibility; circuits designed for 250 V operation function correctly with components rated for 300 V.

Q: Is the expanded operating temperature range of the HM1440810000G significant?

A: The HM1440810000G operates from -40°C to 115°C, compared to -30°C to 105°C for the OSTHM144081. This extended range accommodates more demanding environmental conditions and provides design flexibility for applications requiring broader temperature performance.

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