OSTHM173081 Equivalent & Substitute Parts

Part Overview

The OSTHM173081 is a 17-position wire-to-board terminal block manufactured by On Shore Technology Inc., designed for vertical mounting with 0.150" (3.81mm) pitch spacing. This component features press-fit termination and accommodates wire gauges from 14-28 AWG at ratings of 8A and 300V. The product is classified as obsolete, making identification of compatible substitute parts essential for ongoing system support and procurement planning.

Key Parameters

Parameter	Value
Positions Per Level	17
Pitch	0.150" (3.81mm)
Mating Orientation	Vertical with Board
Current Rating	8 A
Voltage Rating	300 V
Wire Gauge	14-28 AWG
Wire Termination	Screwless - Leg Spring, Push-In Spring
Mounting Type	Press Fit
Operating Temperature Range	-30°C ~ 105°C
Housing Material	Thermoplastic
Contact Material - Plating	Brass
Features	Interlocking (Side)
Color	Gray
RoHS Status	ROHS3 Compliant
MSL Rating	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the OSTHM173081 is based on strict equivalence across the following critical parameters:

17 positions per level configuration
0.150" (3.81mm) pitch spacing
Vertical with board mating orientation
8A current and 300V voltage ratings
14-28 AWG wire gauge compatibility
Screwless push-in spring wire termination
Press-fit mounting capability
Side interlocking feature
Gray thermoplastic housing
ROHS3 compliance

The substitute part HM1730810000G from Amphenol Anytek meets all these core electrical and mechanical parameters. While the substitute offers an extended operating temperature range (-40°C ~ 115°C versus -30°C ~ 105°C) and tin-plated brass contacts, these represent performance enhancements rather than deviations from the original specification.

Parameter Comparison

Parameter	OSTHM173081 (On Shore Technology)	HM1730810000G (Amphenol Anytek)
Positions Per Level	17	17
Pitch	0.150" (3.81mm)	0.150" (3.81mm)
Mating Orientation	Vertical with Board	Vertical with Board
Current Rating	8 A	8 A
Voltage Rating	300 V	300 V
Wire Gauge	14-28 AWG	14-28 AWG
Wire Termination	Screwless - Leg Spring, Push-In Spring	Screwless - Leg Spring, Push-In Spring
Mounting Type	Press Fit	Through Hole, Press-Fit
Operating Temperature Range	-30°C ~ 105°C	-40°C ~ 115°C
Housing Material	Thermoplastic	Thermoplastic
Contact Material - Plating	Brass	Brass - Tin Plated
Clamp Material - Plating	Steel, Stainless	Steel, Stainless
Features	Interlocking (Side)	Interlocking (Side)
Color	Gray	Gray
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
MSL Rating	1 (Unlimited)	1 (Unlimited)
Product Status	Obsolete	Active

Engineering Selection Recommendations

The HM1730810000G qualifies as a direct substitute for the OSTHM173081 based on functional and electrical equivalence. The substitute part maintains active product status with Amphenol Anytek, ensuring ongoing availability and supply chain continuity. Both components carry ROHS3 compliance and unlimited moisture sensitivity ratings, meeting regulatory requirements for current applications.

The substitute's extended operating temperature range (-40°C to 115°C) and tin-plated contact finish provide enhanced environmental performance compared to the original specification. The addition of through-hole mounting capability in the substitute does not preclude press-fit installation, as this represents a manufacturing flexibility rather than a constraint.

Frequently Asked Questions (FAQ)

Q: Can HM1730810000G directly replace OSTHM173081 in existing designs?

A: Yes. Both components share identical pitch spacing (3.81mm), position count (17), current/voltage ratings (8A/300V), wire gauge compatibility (14-28 AWG), and termination method (push-in spring). The substitute maintains the same mechanical footprint and electrical performance envelope.

Q: What is the significance of the mounting type difference (Press Fit vs. Through Hole, Press-Fit)?

A: The substitute supports both through-hole and press-fit mounting, while the original supports press-fit only. This represents expanded mounting flexibility in the substitute without affecting press-fit compatibility with existing PCB designs.

Q: Are there temperature range considerations for substitution?

A: The substitute operates across -40°C to 115°C versus the original's -30°C to 105°C range. For applications within the original temperature specification, both components perform equivalently. Applications requiring extended temperature operation benefit from the substitute's wider range.

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

A: No. Tin plating on brass contacts enhances corrosion resistance and contact reliability. This represents a material upgrade that maintains electrical compatibility while improving long-term performance characteristics.

Q: Are both components RoHS compliant?

A: Yes. Both OSTHM173081 and HM1730810000G carry ROHS3 compliance certification, meeting regulatory requirements for restricted substance use.

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