OSTHM034080 Equivalent & Substitute Parts

Part Overview

The OSTHM034080 is a 3-position wire-to-board terminal block manufactured by On Shore Technology Inc., designed for vertical PCB mounting with 0.300" (7.62mm) pitch spacing. This component is classified as obsolete, making identification of compatible substitute parts essential for ongoing system support and procurement planning. The terminal block accommodates wire gauges from 12-28 AWG with a rated current capacity of 8 A and voltage rating of 250 V, utilizing screwless push-in spring termination technology.

Key Parameters

Parameter	Value
Manufacturer Part Number	OSTHM034080
Manufacturer	On Shore Technology Inc.
Category	Terminal Blocks
Positions Per Level	3
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	Through Hole
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
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution eligibility for the OSTHM034080 is determined by strict alignment across the following critical parameters:

Positions and Pitch: Substitute parts must maintain 3 positions per level with 0.300" (7.62mm) pitch spacing to ensure PCB footprint compatibility
Mating Orientation and Mounting: Vertical with board orientation and through-hole mounting type are non-negotiable for mechanical fit
Wire Termination Method: Screwless push-in spring termination must be preserved for assembly compatibility
Electrical Ratings: Current and voltage ratings must meet or exceed the original specification (8 A minimum, 250 V minimum)
Wire Gauge Compatibility: Support for 12-28 AWG wire range ensures connector compatibility with existing harnesses
Regulatory Compliance: RoHS3 compliance and REACH unaffected status maintain environmental and regulatory alignment

The substitute part HM0340800000G manufactured by Amphenol Anytek satisfies all critical substitution criteria while offering enhanced electrical performance and active product status.

Parameter Comparison

Parameter	OSTHM034080	HM0340800000G	Compatibility
Positions Per Level	3	3	Match
Pitch	0.300" (7.62mm)	0.300" (7.62mm)	Match
Mating Orientation	Vertical with Board	Vertical with Board	Match
Mounting Type	Through Hole	Through Hole	Match
Wire Termination	Screwless - Leg Spring, Push-In Spring	Screwless - Leg Spring, Push-In Spring	Match
Current Rating	8 A	8 A	Match
Voltage Rating	250 V	300 V	Substitute Exceeds
Wire Gauge	12-28 AWG	12-28 AWG	Match
Operating Temperature Range	-30°C ~ 105°C	-40°C ~ 115°C	Substitute Exceeds
Housing Material	Thermoplastic	Thermoplastic	Match
Contact Material - Plating	Brass	Brass - Tin Plated	Compatible
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Match
Product Status	Obsolete	Active	Substitute Active

Engineering Selection Recommendations

The HM0340800000G from Amphenol Anytek is a direct functional equivalent to the OSTHM034080. Both components maintain identical mechanical and electrical specifications across all critical substitution parameters, including pitch, position count, termination method, and wire gauge compatibility.

The substitute part offers measurable advantages: active product status ensures long-term availability and supply chain stability, enhanced voltage rating (300 V vs. 250 V) provides additional design margin, and extended operating temperature range (-40°C ~ 115°C vs. -30°C ~ 105°C) supports broader application environments. Both parts maintain ROHS3 compliance and REACH unaffected status, satisfying regulatory requirements.

The tin-plated brass contact material in the substitute part provides improved corrosion resistance compared to unplated brass, enhancing long-term reliability in demanding environments.

Frequently Asked Questions (FAQ)

Q: Can HM0340800000G be used as a direct replacement for OSTHM034080 in existing PCB designs?

A: Yes. Both components share identical pitch (0.300"), position count (3), mounting type (through hole), and wire termination method (screwless push-in spring). PCB footprints are mechanically compatible without modification.

Q: What is the significance of the voltage rating difference (250 V vs. 300 V)?

A: The substitute part's higher voltage rating (300 V) exceeds the original specification and does not create compatibility issues. This provides additional design margin for applications operating near the original 250 V limit.

Q: Are the wire gauge specifications identical?

A: Yes. Both components support 12-28 AWG wire gauges, ensuring compatibility with existing wire harnesses and assembly processes.

Q: Does the tin-plated contact material affect compatibility?

A: No. Tin plating on brass contacts is a material enhancement that improves corrosion resistance. It does not affect electrical or mechanical compatibility with the original component.

Q: Why is product status relevant for substitution?

A: The OSTHM034080 is obsolete, meaning On Shore Technology Inc. no longer manufactures or supports this part. The HM0340800000G is active, ensuring continued availability, technical support, and supply chain reliability for future procurement needs.

Q: Are both components RoHS3 compliant?

A: Yes. Both the OSTHM034080 and HM0340800000G are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory standards.

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