ED950/4 Terminal Block Plug Equivalent & Substitute Parts

Part Overview

The ED950/4 is a 4-position terminal block plug manufactured by On Shore Technology Inc., featuring female sockets with 0.197" (5.00mm) pitch spacing and 180° free-hanging in-line mounting. This component is classified as Active product status and is designed for screw termination applications requiring UL 300V rated connections. Substitute parts are identified when equivalent electrical and mechanical parameters align with the original specification, enabling component interchangeability in applications where the main part becomes unavailable or inventory constraints require alternative sourcing.

Key Parameters

Parameter	ED950/4 Specification
Number of Positions	4
Pitch	0.197" (5.00mm)
Type	Plug, Female Sockets
Mounting Type	Free Hanging (In-Line)
Termination Style	Screw
Voltage - UL	300 V
Current - UL	15 A
Wire Gauge - AWG	12-22 AWG
Operating Temperature	-30°C ~ 105°C
Material Flammability Rating	UL94 V-0
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts for the ED950/4 are qualified based on the following critical parameters that determine functional interchangeability:

Position Count & Pitch: All substitutes maintain 4 positions at 0.197" (5.00mm) pitch, ensuring mechanical compatibility with mating connectors.
Connector Type: All substitutes are plug-type connectors with female sockets, matching the original interface.
Mounting Configuration: All substitutes are free-hanging in-line mounted, preserving installation geometry.
Electrical Ratings: Substitutes must meet or exceed UL 300V voltage rating and 15A current capacity.
Termination Method: All substitutes use screw-based termination, maintaining assembly compatibility.
Compliance: All substitutes maintain ROHS3 compliance and UL94 V-0 flammability rating.

The identified substitutes (OSTTJ047150 and 796640-4) satisfy these core parameters while accommodating variations in wire gauge ranges, contact materials, and torque specifications that do not affect functional substitution in standard applications.

Parameter Comparison

Parameter	ED950/4	OSTTJ047150	796640-4
Manufacturer	On Shore Technology Inc.	On Shore Technology Inc.	TE Connectivity AMP Connectors
Number of Positions	4	4	4
Pitch	0.197" (5.00mm)	0.197" (5.00mm)	0.197" (5.00mm)
Type	Plug, Female Sockets	Plug, Female Sockets	Plug, Female Sockets
Mounting Type	Free Hanging (In-Line)	Free Hanging (In-Line)	Free Hanging (In-Line)
Termination Style	Screw	Screw	Screw - Rising Cage Clamp
Voltage - UL	300 V	300 V	300 V
Current - UL	15 A	Not specified	15 A
Wire Gauge - AWG	12-22 AWG	12-30 AWG	12-30 AWG
Wire Gauge - mm²	2.5mm²	0.34-2.5mm²	0.05-3mm²
Operating Temperature	-30°C ~ 105°C	-40°C ~ 115°C	-40°C ~ 110°C
Color	Green	Green	Green
Material Flammability Rating	UL94 V-0	UL94 V-0	UL94 V-0
Screw Size	M3	Not specified	M3
Torque - Screw	0.5 Nm (4.4 Lb-In)	0.56 Nm (5.0 Lb-In)	0.79 Nm (7.0 Lb-In)
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

OSTTJ047150 (On Shore Technology Inc.)

This substitute maintains the same manufacturer as the primary part, ensuring design continuity and supply chain alignment. The OSTTJ047150 extends the operating temperature range to -40°C ~ 115°C and accommodates wire gauges from 12-30 AWG (0.34-2.5mm²), providing broader application flexibility. The packaging format differs (Tray vs. Bulk), which may affect procurement logistics but does not impact electrical or mechanical compatibility. ROHS3 compliance and UL94 V-0 flammability rating are maintained. This part is suitable for applications requiring extended temperature performance within the specified wire gauge range.

796640-4 (TE Connectivity AMP Connectors)

This substitute is manufactured by TE Connectivity and features the Buchanan series designation. It maintains the 180° plug wire entry orientation and M3 screw specification matching the ED950/4. The termination style incorporates a rising cage clamp mechanism, which is a functional enhancement over standard screw termination. The operating temperature range extends to -40°C ~ 110°C, and wire gauge accommodation spans 12-30 AWG (0.05-3mm²). Contact material differs (Phosphor Bronze vs. Copper), and housing material is specified as Polyamide (PA66) Nylon 6/6. ROHS3 compliance is maintained; however, REACH status is listed as Affected, requiring compliance verification for applications subject to REACH regulations. This part is suitable for applications requiring cross-manufacturer sourcing and enhanced termination reliability.

Frequently Asked Questions (FAQ)

Q: Can OSTTJ047150 be used as a direct replacement for ED950/4 in all applications?

A: OSTTJ047150 is mechanically and electrically compatible with ED950/4 for applications operating within the overlapping specifications. The wire gauge range of OSTTJ047150 (12-30 AWG) encompasses the ED950/4 specification (12-22 AWG). The extended operating temperature range (-40°C ~ 115°C vs. -30°C ~ 105°C) provides additional margin. Packaging differs (Tray vs. Bulk), which may affect procurement quantities and handling procedures but does not impact functional performance.

Q: What are the key differences between 796640-4 and ED950/4?

A: The primary differences are manufacturer (TE Connectivity vs. On Shore Technology), contact material (Phosphor Bronze vs. Copper), housing material (PA66 Nylon 6/6 vs. Polyamide PA Nylon), and termination mechanism (rising cage clamp vs. standard screw). The 796640-4 maintains equivalent electrical ratings (300V, 15A) and mechanical configuration (4-position, 5mm pitch, free-hanging in-line). The REACH status differs (Affected vs. Unaffected), requiring compliance assessment for regulated applications.

Q: Are there wire gauge compatibility considerations when substituting these parts?

A: Yes. The ED950/4 is specified for 12-22 AWG (2.5mm²). OSTTJ047150 accommodates 12-30 AWG (0.34-2.5mm²), and 796640-4 accommodates 12-30 AWG (0.05-3mm²). When substituting, ensure the actual wire gauge used in the application falls within the substitute part's specified range. Finer gauges (below 12 AWG) or heavier gauges (above 22 AWG) may require evaluation against the substitute's contact and screw specifications.

Q: Do screw torque differences affect substitution suitability?

A: Screw torque specifications (ED950/4: 0.5 Nm, OSTTJ047150: 0.56 Nm, 796640-4: 0.79 Nm) reflect design variations in contact geometry and clamping mechanisms. These differences do not prevent substitution but require adherence to each part's specified torque value during assembly to ensure proper contact pressure and electrical continuity. Assembly procedures must reference the substitute part's torque specification.

Q: What compliance considerations apply when selecting between these substitutes?

A: All three parts maintain ROHS3 compliance and UL94 V-0 flammability rating. The 796640-4 is listed as REACH Affected, whereas ED950/4 and OSTTJ047150 are REACH Unaffected. Applications subject to REACH regulations must confirm compliance status with the selected substitute. All parts carry MSL 1 (Unlimited) moisture sensitivity classification, indicating no special storage or handling requirements.

Q: Can 796640-4 be used in applications where ED950/4 was originally specified?

A: 796640-4 is functionally compatible with ED950/4 for applications within the overlapping electrical and mechanical specifications. The rising cage clamp termination mechanism in 796640-4 provides enhanced contact reliability compared to standard screw termination. Cross-manufacturer substitution is permissible when compliance requirements (particularly REACH status) are satisfied and assembly procedures are updated to reflect the substitute part's torque specification (0.79 Nm vs. 0.5 Nm).

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