OSTHM164081 Equivalent & Substitute Parts

Part Overview

The OSTHM164081 is a 16-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 accommodates wire gauges from 12-28 AWG at ratings of 8A and 250V. The product is currently obsolete, making identification of compatible substitute components essential for ongoing system support and new design implementations.

Key Parameters

Parameter	Value
Positions Per Level	16
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

Substitution eligibility for the OSTHM164081 is determined by strict equivalence across the following critical parameters:

Electrical Compatibility: Positions per level (16), 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 housing material (thermoplastic)
Environmental & Regulatory: Operating temperature range support, RoHS3 compliance, and REACH status

The HM1640810000G manufactured by Amphenol Anytek qualifies as a direct substitute based on these parameters. While the substitute exhibits enhanced specifications in voltage rating (300V vs. 250V) and operating temperature range (-40°C ~ 115°C vs. -30°C ~ 105°C), it maintains full compatibility with the original part's electrical and mechanical requirements.

Parameter Comparison

Parameter	OSTHM164081	HM1640810000G	Compatibility
Manufacturer	On Shore Technology Inc.	Amphenol Anytek	Different manufacturer
Positions Per Level	16	16	Equivalent
Pitch	0.300" (7.62mm)	0.300" (7.62mm)	Equivalent
Mating Orientation	Vertical with Board	Vertical with Board	Equivalent
Current Rating	8 A	8 A	Equivalent
Voltage Rating	250 V	300 V	Substitute exceeds requirement
Wire Gauge	12-28 AWG	12-28 AWG	Equivalent
Mounting Type	Press Fit	Through Hole, Press-Fit	Substitute supports additional mounting option
Wire Termination	Screwless - Leg Spring, Push-In Spring	Screwless - Leg Spring, Push-In Spring	Equivalent
Operating Temperature	-30°C ~ 105°C	-40°C ~ 115°C	Substitute exceeds requirement
Housing Material	Thermoplastic	Thermoplastic	Equivalent
Contact Material - Plating	Brass	Brass - Tin Plated	Substitute includes additional plating
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Equivalent
Product Status	Obsolete	Active	Substitute is currently manufactured

Engineering Selection Recommendations

The HM1640810000G is a qualified substitute for the obsolete OSTHM164081. Both components maintain ROHS3 compliance and REACH unaffected status, satisfying regulatory requirements for equivalent applications.

The substitute component offers enhanced electrical performance with a 300V voltage rating compared to the original 250V specification, and an extended operating temperature range of -40°C ~ 115°C versus -30°C ~ 105°C. These improvements provide additional design margin without introducing incompatibility.

The HM1640810000G supports both through-hole and press-fit mounting configurations, whereas the OSTHM164081 is limited to press-fit. This expanded mounting flexibility accommodates a broader range of PCB assembly processes.

Tin plating on the brass contacts of the HM1640810000G provides enhanced corrosion resistance compared to unplated brass, improving long-term reliability in demanding environments.

Frequently Asked Questions (FAQ)

Q: Can the HM1640810000G be used as a direct replacement for the OSTHM164081 in existing designs?

A: Yes. The HM1640810000G maintains electrical equivalence across all critical parameters: 16 positions, 0.300" pitch, 8A current rating, 250V minimum voltage, 12-28 AWG wire gauge acceptance, and identical wire termination method. The substitute's enhanced specifications do not introduce incompatibility.

Q: What is the primary difference between these two components?

A: The OSTHM164081 is obsolete and manufactured by On Shore Technology Inc., while the HM1640810000G is an active product from Amphenol Anytek. The substitute offers improved voltage rating (300V vs. 250V), extended temperature range (-40°C ~ 115°C vs. -30°C ~ 105°C), tin-plated contacts for enhanced corrosion resistance, and dual mounting support (through-hole and press-fit).

Q: Are there any packaging or availability differences?

A: The OSTHM164081 was available in 975 pieces at the time of documentation. The HM1640810000G is supplied in bulk packaging with 1,052 pieces currently in stock as an active product.

Q: Does the additional mounting flexibility of the HM1640810000G affect PCB design?

A: No. The HM1640810000G supports both through-hole and press-fit mounting, providing design flexibility. If your existing design uses press-fit mounting, the substitute functions identically. Through-hole capability is an additional option that does not impact press-fit applications.

Q: Are both components RoHS and REACH compliant?

A: Yes. Both the OSTHM164081 and HM1640810000G are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements for electronic component manufacturing and use.

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