OSTH413705A Terminal Block Plug - Equivalent & Substitute Parts

Part Overview

The OSTH413705A is a 13-position terminal block plug manufactured by On Shore Technology Inc., featuring female sockets with 0.197" (5.00mm) pitch spacing. This component is designed for free-hanging, in-line applications requiring screwless push-in spring termination. The product is currently obsolete, making identification of compatible substitute parts essential for system maintenance, repair, and component sourcing.

Key Parameters

Parameter	OSTH413705A
Manufacturer	On Shore Technology Inc.
Category	Terminal Blocks
Type	Plug, Female Sockets
Number of Positions	13
Pitch	0.197" (5.00mm)
Mounting Type	Free Hanging (In-Line)
Termination Style	Screwless - Leg Spring, Push-In Spring
Wire Gauge Range	12-26 AWG
Voltage - UL	300 V
Operating Temperature	-30°C ~ 105°C
Contact Mating Finish	Tin
Material Flammability Rating	UL94 V-0
RoHS Status	ROHS3 Compliant
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution compatibility for the OSTH413705A is determined by the following critical parameters:

Position Count & Pitch: Both main and substitute parts must maintain 13 positions at 0.197" (5.00mm) pitch to ensure mechanical and electrical compatibility with mating connectors.
Connector Type: Female socket plugs with identical mounting orientation (free-hanging, in-line) are required for direct replacement.
Termination Method: Screwless push-in spring termination must be preserved to maintain installation compatibility.
Electrical Ratings: Voltage and current ratings must meet or exceed the original specification (300 V UL minimum).
Wire Gauge Compatibility: 12-26 AWG wire acceptance range ensures proper conductor accommodation.
Flammability & Compliance: UL94 V-0 rating and RoHS compliance maintain safety and regulatory requirements.

The Phoenix Contact 1974847 qualifies as a substitute based on these parameters: identical position count, pitch, female socket configuration, free-hanging mounting, push-in spring termination, compatible wire gauge range, and equivalent or superior electrical ratings.

Parameter Comparison

Parameter	OSTH413705A	1974847 (Phoenix Contact)
Number of Positions	13	13
Pitch	0.197" (5.00mm)	0.197" (5.00mm)
Type	Plug, Female Sockets	Plug, Female Sockets
Mounting Type	Free Hanging (In-Line)	Free Hanging (In-Line)
Termination Style	Screwless - Leg Spring, Push-In Spring	Screwless - Leg Spring, Push-In Spring
Wire Gauge Range - AWG	12-26 AWG	12-26 AWG
Voltage - UL	300 V	300 V
Contact Mating Finish	Tin	Tin
Material Flammability Rating	UL94 V-0	UL94 V-0
RoHS Status	ROHS3 Compliant	RoHS Compliant
Product Status	Obsolete	Active

Engineering Selection Recommendations

The Phoenix Contact 1974847 (COMBICON FKCS series) is the qualified substitute for the obsolete OSTH413705A. Selection is based on:

Mechanical Compatibility: Identical 13-position, 5.00mm pitch configuration ensures direct physical compatibility with existing mating connectors and PCB layouts.
Electrical Equivalence: Both components meet 300 V UL voltage requirements and support 12-26 AWG wire gauges, maintaining circuit performance specifications.
Termination Compatibility: Identical screwless push-in spring termination preserves installation procedures and tooling requirements.
Regulatory Compliance: Both parts maintain UL94 V-0 flammability rating. The substitute carries active RoHS compliance status, whereas the original is ROHS3 compliant, both meeting current regulatory requirements.
Product Availability: The substitute is currently in active production with 691 pieces in stock, providing reliable long-term sourcing compared to the obsolete original.

The 1974847 operates at 180° wire entry orientation compared to the original's unspecified orientation; this represents a functional enhancement for applications requiring angled wire routing without affecting connector compatibility.

Frequently Asked Questions (FAQ)

Q: Can the Phoenix Contact 1974847 directly replace the OSTH413705A in existing assemblies?

A: Yes. Both components share identical position count (13), pitch spacing (5.00mm), female socket configuration, free-hanging mounting type, and push-in spring termination. Mechanical and electrical compatibility is maintained for direct substitution in applications designed for the original part.

Q: Are there differences in wire gauge acceptance between these parts?

A: No. Both the OSTH413705A and 1974847 accept 12-26 AWG wire gauges, ensuring equivalent conductor accommodation and installation compatibility.

Q: What is the significance of the 180° wire entry orientation on the substitute part?

A: The 1974847 specifies 180° wire entry, indicating angled conductor routing capability. The original part does not specify wire entry orientation. This difference does not affect compatibility; it represents a design feature that may provide installation flexibility in space-constrained applications.

Q: Do both parts meet the same safety and compliance standards?

A: Yes. Both components carry UL94 V-0 flammability rating and meet RoHS requirements. The original is ROHS3 compliant; the substitute is RoHS compliant. Both satisfy current regulatory standards for electronic component applications.

Q: Why is the substitute part listed as "Active" while the original is "Obsolete"?

A: The OSTH413705A has been discontinued by On Shore Technology Inc., making it unavailable for new orders. The Phoenix Contact 1974847 remains in active production with current inventory availability, providing a sustainable sourcing solution for ongoing component requirements.

Q: Are there any electrical performance differences between these parts?

A: The substitute provides equivalent or enhanced electrical performance. Both support 300 V UL voltage rating. The 1974847 additionally specifies 12 A IEC current rating and 630 V IEC voltage rating, exceeding the original specification and providing margin for demanding applications.

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