EDSTLZ975/9-SW Terminal Block Header Equivalent & Substitute Parts

Part Overview

The EDSTLZ975/9-SW is an 18-position terminal block header manufactured by On Shore Technology Inc., designed for right-angle solder mounting applications. This component features male pins with dual-side shrouding and operates within a temperature range of -30°C to 105°C. The product is classified as obsolete, making identification of suitable substitute components essential for ongoing system support and new design implementations.

Key Parameters

Parameter	Value
Number of Positions	18
Positions Per Level	18
Number of Levels	2
Pitch	0.200" (5.08mm)
Header Orientation	90°, Right Angle
Type	Header, Male Pins, Shrouded (2 Side)
Mounting Type	Solder
Voltage - UL	300 V
Operating Temperature	-30°C ~ 105°C
Material Flammability Rating	UL94 V-0
RoHS Status	ROHS3 Compliant
Contact Tail Length	0.138" (3.50mm)
Insulation Height	0.138" (3.50mm)

Substitute Part Grouping Explanation

Substitution of the EDSTLZ975/9-SW is determined by strict alignment of the following critical parameters:

Position Configuration: 18 total positions arranged in 2 levels
Pitch Specification: 0.200" (5.08mm) center-to-center spacing
Connector Type: Male pins with dual-side shrouding
Orientation: 90° right-angle configuration
Mounting Method: Solder termination
Voltage Rating: Minimum 300 V UL compliance
Flammability Standard: UL94 V-0 material rating
Environmental Compliance: RoHS and REACH status

The substitute part 1725240000 (Weidmüller Omnimate SL series) meets these core substitution criteria while maintaining functional and electrical compatibility for the intended application.

Parameter Comparison

Parameter	EDSTLZ975/9-SW (On Shore)	1725240000 (Weidmüller)
Number of Positions	18	18
Positions Per Level	18	9
Number of Levels	2	2
Pitch	0.200" (5.08mm)	0.200" (5.08mm)
Header Orientation	90°, Right Angle	90°, Right Angle
Type	Header, Male Pins, Shrouded (2 Side)	Header, Male Pins, Shrouded (2 Side)
Mounting Type	Solder	Through Hole
Voltage - UL	300 V	300 V
Operating Temperature	-30°C ~ 105°C	-50°C ~ 100°C
Material Flammability Rating	UL94 V-0	UL94 V-0
RoHS Status	ROHS3 Compliant	RoHS Compliant
Contact Tail Length	0.138" (3.50mm)	0.126" (3.20mm)
Insulation Height	0.138" (3.50mm)	1.032" (26.21mm)

Engineering Selection Recommendations

The Weidmüller 1725240000 serves as an active-status substitute for the obsolete EDSTLZ975/9-SW. Both components maintain UL94 V-0 flammability compliance and 300 V UL voltage ratings, ensuring equivalent electrical safety performance. The substitute part carries active product status with current manufacturing availability, addressing the obsolescence of the original component.

Physical integration requires consideration of mounting methodology differences: the original part specifies solder termination, while the substitute employs through-hole mounting. PCB layout modifications may be necessary to accommodate the different mounting approach and the increased insulation height of the substitute component (1.032" versus 0.138").

Both components maintain RoHS and REACH compliance status, supporting regulatory requirements for new designs and system updates.

Frequently Asked Questions (FAQ)

Q: Can the 1725240000 directly replace the EDSTLZ975/9-SW without PCB modifications?

A: Direct replacement requires PCB layout assessment. While both components share identical pitch (5.08mm), position count (18), and orientation (90° right-angle), the mounting methods differ. The original uses solder termination; the substitute uses through-hole mounting. Insulation height differences (0.138" versus 1.032") may affect clearance and component spacing on the board.

Q: Are there electrical compatibility concerns between these components?

A: Both components meet 300 V UL voltage requirements and UL94 V-0 flammability standards. Electrical performance is equivalent for the specified application parameters.

Q: What is the significance of the different positions-per-level configuration?

A: The original EDSTLZ975/9-SW arranges 18 positions in a single level per side (18 per level, 2 levels total). The 1725240000 arranges the same 18 positions as 9 per level across 2 levels. This affects the physical footprint and connector geometry, requiring mechanical compatibility assessment during integration.

Q: Does the operating temperature range difference impact substitution?

A: The original component operates -30°C to 105°C; the substitute operates -50°C to 100°C. For applications within the overlapping range (-30°C to 100°C), both components are functionally equivalent. Applications requiring operation above 100°C or below -50°C require component-specific evaluation.

Q: Are both components RoHS compliant?

A: Yes. The original is ROHS3 compliant; the substitute is RoHS compliant. Both meet current regulatory requirements for hazardous substance restrictions.

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