OSTT7120151 Equivalent & Substitute Parts

Part Overview

The OSTT7120151 is a 12-position wire-to-board terminal block manufactured by On Shore Technology Inc., designed for through-hole PCB mounting with a 45° mating angle and 0.250" (6.35mm) pitch. This component operates at 30 A and 300 V, accommodating wire gauges from 10-24 AWG with screw-based rising cage clamp termination.

The OSTT7120151 is classified as obsolete. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production or maintenance requirements for systems utilizing this terminal block configuration.

Substiute Parts

OSTT7120151

On Shore Technology Inc.In Stock: 923OSTT7120151 Datasheet

Current PartRFQ

T71203510000G

Amphenol AnytekIn Stock: 1136T71203510000G Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the OSTT7120151 is determined by the following critical parameters:

• Position Count & Pitch: 12 positions at 0.250" (6.35mm) spacing
• Electrical Ratings: 30 A current and 300 V voltage capacity
• Wire Gauge Compatibility: 10-24 AWG acceptance
• Mounting Configuration: Through-hole PCB mounting
• Termination Method: Screw-based rising cage clamp
• Regulatory Compliance: ROHS3 compliance and REACH unaffected status

The substitute part T71203510000G from Amphenol Anytek meets these core electrical and mechanical requirements. While the mating angle differs (35° versus 45°), both configurations maintain the same pitch, position count, electrical ratings, and termination methodology, making them functionally interchangeable within the specified parameter constraints.

Parameter Comparison

Engineering Selection Recommendations

The T71203510000G qualifies as a direct substitute for the OSTT7120151 based on the following criteria:

Product Status: The T71203510000G maintains active production status, ensuring long-term availability and supply chain stability compared to the obsolete OSTT7120151.

Regulatory Compliance: Both parts are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements without modification to existing designs.

Electrical & Mechanical Compatibility: Identical current (30 A), voltage (300 V), wire gauge (10-24 AWG), pitch (6.35mm), and termination method (screw-based rising cage clamp) ensure functional equivalence in circuit applications.

Temperature Performance: The T71203510000G provides an extended operating temperature range (-40°C ~ 115°C) compared to the OSTT7120151 (-30°C ~ 105°C), offering improved thermal margin for demanding environments.

Mating Angle Consideration: The 10° difference in mating angle (35° versus 45°) represents a minor geometric variation that does not affect electrical performance or wire termination capacity within the specified parameter set.

Frequently Asked Questions (FAQ)

Q: Can the T71203510000G directly replace the OSTT7120151 in existing PCB designs?

A: Yes. Both parts share identical pitch (6.35mm), position count (12), electrical ratings (30 A / 300 V), wire gauge acceptance (10-24 AWG), and termination methodology (screw-based rising cage clamp). The mating angle difference (35° versus 45°) is a minor geometric variation that does not affect functional compatibility.

Q: What is the significance of the mating angle difference?

A: The mating angle defines the connector's approach angle to the PCB. The OSTT7120151 uses 45° (135° board angle), while the T71203510000G uses 35° (145° board angle). Both configurations accommodate the same wire gauge range and electrical specifications. PCB layout and connector clearance should be evaluated for the specific application.

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

A: Both parts are ROHS3 compliant and REACH unaffected. No compliance gaps exist between the two components.

Q: What is the inventory status of these parts?

A: The OSTT7120151 has 879 pieces in stock (obsolete status). The T71203510000G has 1045 pieces in stock (active status), providing superior long-term availability.

Q: Does the extended temperature range of the T71203510000G affect compatibility?

A: No. The extended range (-40°C ~ 115°C versus -30°C ~ 105°C) represents an improvement that maintains full backward compatibility with applications designed for the OSTT7120151's temperature specifications.

Q: Are there differences in screw specifications between these parts?

A: Yes. The OSTT7120151 uses M3 screws with 1.0 Nm torque specification, while the T71203510000G uses M3.5 screws with 0.78 Nm torque specification. These differences reflect manufacturer design variations and do not affect substitution eligibility within the specified parameter constraints.