OSTTJ127152 Terminal Block Plug Equivalent & Substitute Parts

Part Overview

The OSTTJ127152 is a 12-position terminal block plug manufactured by On Shore Technology Inc., featuring female sockets with 0.197" (5.00mm) pitch spacing. This component is classified as a free-hanging in-line connector with screw termination, rated for 300V UL and wire gauges from 12-24 AWG (0.34-2.5mm²). The part maintains Active product status with full RoHS3 compliance and REACH unaffected designation. Substitute parts are identified when equivalent electrical and mechanical parameters align within the allowed specifications for this terminal block category.

Key Parameters

Parameter	Value
Manufacturer Part Number	OSTTJ127152
Manufacturer	On Shore Technology Inc.
Category	Terminal Blocks
Type	Plug, Female Sockets
Number of Positions	12
Pitch	0.197" (5.00mm)
Mounting Type	Free Hanging (In-Line)
Termination Style	Screw
Voltage - UL	300 V
Wire Gauge - AWG	12-24 AWG
Wire Gauge - mm²	0.34-2.5mm²
Operating Temperature	-30°C ~ 105°C
Material Flammability Rating	UL94 V-0
Color	Green
RoHS Status	ROHS3 Compliant
Product Status	Active

Substitute Part Grouping Explanation

Substitution eligibility for the OSTTJ127152 is determined by the following critical parameters:

Position Count: Must equal 12 positions
Connector Type: Must be plug with female sockets
Mounting Configuration: Must be free hanging (in-line)
Termination Method: Must be screw-based
Voltage Rating: Must meet or exceed 300V UL requirement
Wire Gauge Compatibility: Must accommodate 12-24 AWG (0.34-2.5mm²) minimum range
Pitch Tolerance: Pitch values of 0.197" (5.00mm) and 0.200" (5.08mm) are mechanically compatible within standard connector mating tolerances for this product category
Compliance: Must maintain RoHS3 compliance and REACH unaffected status
Flammability: Must meet UL94 V-0 rating

The identified substitutes (Phoenix Contact 1805398 and 1912281) satisfy all critical parameters while offering enhanced electrical ratings and expanded wire gauge ranges.

Parameter Comparison

Parameter	OSTTJ127152	1805398 (Phoenix Contact)	1912281 (Phoenix Contact)
Manufacturer Part Number	OSTTJ127152	1805398	1912281
Manufacturer	On Shore Technology Inc.	Phoenix Contact	Phoenix Contact
Type	Plug, Female Sockets	Plug, Female Sockets	Plug, Female Sockets
Number of Positions	12	12	12
Positions Per Level	12	12	12
Number of Levels	1	1	1
Pitch	0.197" (5.00mm)	0.200" (5.08mm)	0.200" (5.08mm)
Mounting Type	Free Hanging (In-Line)	Free Hanging (In-Line)	Free Hanging (In-Line)
Termination Style	Screw	Screw - Rising Cage Clamp	Screw - Rising Cage Clamp
Voltage - UL	300 V	300 V	300 V
Current - UL	—	15 A	16 A
Wire Gauge - AWG	12-24 AWG	12-30 AWG	12-30 AWG
Wire Gauge - mm²	0.34-2.5mm²	0.2-2.5mm²	0.2-2.5mm²
Color	Green	Green	Green
Material Flammability Rating	UL94 V-0	UL94 V-0	UL94 V-0
Torque - Screw	0.56 Nm (5.0 Lb-In)	0.5-0.6 Nm (4.4-5.3 Lb-In)	0.5-0.6 Nm (4.4-5.3 Lb-In)
Wire Strip Length	7-8mm	7mm	7mm
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Active	Active	Active

Engineering Selection Recommendations

Both Phoenix Contact substitutes maintain Active product status with full RoHS3 compliance and REACH unaffected designation, matching the regulatory profile of the OSTTJ127152. The substitutes provide equivalent or superior electrical performance within the specified voltage and current parameters.

Phoenix Contact 1805398 (COMBICON MSTBT series) delivers 15A UL current rating and supports wire gauges from 12-30 AWG, extending the lower gauge capability to 0.2mm². The rising cage clamp termination provides enhanced contact security compared to standard screw termination.

Phoenix Contact 1912281 (COMBICON MSTB series) offers the highest current rating at 16A UL with identical wire gauge range (12-30 AWG, 0.2-2.5mm²) and equivalent termination technology. Both Phoenix Contact options feature mating flanges and tin contact mating finish.

The pitch differential between 5.00mm (OSTTJ127152) and 5.08mm (substitutes) falls within standard mechanical tolerance ranges for connector mating in this product category and does not preclude functional substitution.

Frequently Asked Questions (FAQ)

Q: Can Phoenix Contact 1805398 or 1912281 directly replace OSTTJ127152 in existing installations?

A: Both Phoenix Contact parts are mechanically and electrically compatible substitutes. The 0.03mm pitch difference (5.00mm vs. 5.08mm) is within standard connector tolerance specifications. Verify mating connector compatibility in your specific application before deployment.

Q: What is the difference between Phoenix Contact 1805398 and 1912281?

A: Both parts share identical mechanical specifications and wire gauge ranges. The primary distinction is current rating: 1805398 is rated for 15A UL, while 1912281 is rated for 16A UL. Select based on your circuit current requirements.

Q: Are the wire gauge ranges fully compatible?

A: The OSTTJ127152 supports 12-24 AWG (0.34-2.5mm²). Both Phoenix Contact substitutes support 12-30 AWG (0.2-2.5mm²), providing expanded lower gauge capability. All three parts accommodate the full 0.34-2.5mm² range of the original part.

Q: Do the substitutes maintain the same screw torque specifications?

A: The OSTTJ127152 specifies 0.56 Nm (5.0 Lb-In) torque. Phoenix Contact substitutes specify 0.5-0.6 Nm (4.4-5.3 Lb-In), which encompasses the original specification within acceptable engineering tolerance.

Q: Are all three parts RoHS3 compliant?

A: Yes. OSTTJ127152, 1805398, and 1912281 all maintain ROHS3 compliance and REACH unaffected status.

Q: What is the significance of the rising cage clamp termination in the Phoenix Contact parts?

A: Rising cage clamp termination provides positive contact engagement and is functionally equivalent to screw termination for this connector class. Both termination methods are suitable for 12-24 AWG wire ranges specified in the original part.

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