Weidmüller 1785860000 Terminal Block: Equivalent & Substitute Parts

Part Overview

The Weidmüller 1785860000 is a 7-position wire-to-board terminal block with vertical mating orientation and 0.200" (5.08mm) pitch spacing. This component is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system maintenance and new design implementations. The part operates at 10 A current capacity with 300 V voltage rating and accommodates wire gauges from 14-22 AWG through screw-clamp termination.

Key Parameters

Parameter	Value
Manufacturer Part Number	1785860000
Manufacturer	Weidmüller
Series	Omnimate TOP1.5GS
Product Status	Obsolete
Positions Per Level	7
Pitch	0.200" (5.08mm)
Mating Orientation	Vertical with Board
Current Rating	10 A
Voltage Rating	300 V
Wire Gauge	14-22 AWG
Mounting Type	Through Hole
Wire Termination	Screw - TOP Clamp
Housing Material	Polyamide (PA66), Nylon 6/6
Contact Material - Plating	Brass - Tin Plated
Operating Temperature	-20°C ~ 100°C
RoHS Status	RoHS Compliant

Substitute Part Grouping Explanation

Substitution eligibility is determined by the following critical parameters:

Primary Compatibility Criteria:

Number of positions: 7 (fixed requirement)
Pitch spacing: 0.200" (5.08mm) or 0.197" (5.00mm) acceptable within standard tolerance
Mounting type: Through hole (required)
Voltage rating: Minimum 300 V (equal or higher acceptable)
Current rating: Minimum 10 A (equal or higher acceptable)
Wire gauge accommodation: 14-22 AWG minimum (equal or broader range acceptable)
RoHS compliance: Required for modern applications

Mating Orientation Consideration: The main part features vertical mating orientation. Substitute parts with horizontal (side-entry) mating orientation represent functional alternatives for applications where board space or connector accessibility differs from the original design intent.

Termination Method: The main part uses screw-clamp termination. Substitute parts with screwless push-in or leaf-spring termination represent functional alternatives with different installation characteristics.

Parameter Comparison

Parameter	1785860000 (Main)	1331180000 (MFR Recommended)	1776266-7 (Similar)	ED500/7DS (Similar)	OSTTA074163 (Similar)	OSTTC070162 (Similar)
Manufacturer	Weidmüller	Weidmüller	TE Connectivity	On Shore Technology	On Shore Technology	On Shore Technology
Product Status	Obsolete	Active	Active	Active	Active	Active
Positions Per Level	7	7	7	7	7	7
Pitch	0.200" (5.08mm)	0.200" (5.08mm)	0.197" (5.00mm)	0.197" (5.00mm)	0.200" (5.08mm)	0.197" (5.00mm)
Mating Orientation	Vertical with Board	Vertical with Board	Horizontal with Board	Horizontal with Board	Horizontal with Board	Horizontal with Board
Current Rating	10 A	20 A	10 A	15 A	15 A	15 A
Voltage Rating	300 V	300 V	300 V	300 V	300 V	300 V
Wire Gauge	14-22 AWG	12-24 AWG	14-22 AWG	14-22 AWG	14-22 AWG	14-22 AWG
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Wire Termination	Screw - TOP Clamp	Screwless - Leg Spring, Push-In Spring	Screw - Leaf Spring, Wire Guard	Screw - Leaf Spring, Wire Guard	Screw - Leaf Spring, Wire Guard	Screw - Leaf Spring, Wire Guard
Operating Temperature	-20°C ~ 100°C	-50°C ~ 120°C	-55°C ~ 105°C	-30°C ~ 105°C	-30°C ~ 105°C	-30°C ~ 105°C
Housing Material	Polyamide (PA66), Nylon 6/6	Thermoplastic, Wemid	Polyamide (PA66), Nylon 6/6	Polyamide (PA), Nylon	Thermoplastic	Thermoplastic
RoHS Status	RoHS Compliant	RoHS Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
MSL Rating	Not Applicable	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

Primary Recommendation: Weidmüller 1331180000

The 1331180000 is the manufacturer-recommended substitute from Weidmüller. This part maintains identical pitch spacing (0.200" / 5.08mm) and vertical mating orientation as the obsolete 1785860000. The 1331180000 is active in production with enhanced electrical specifications (20 A current capacity versus 10 A) and extended operating temperature range (-50°C to 120°C versus -20°C to 100°C). Both parts carry RoHS compliance certification. The primary design difference is termination method: the 1331180000 uses screwless push-in spring termination rather than screw-clamp, requiring PCB layout and assembly procedure modifications.

Alternative Recommendations: On Shore Technology OSTTA074163

The OSTTA074163 maintains the 0.200" (5.08mm) pitch spacing of the original part and accommodates the same 14-22 AWG wire gauge range. This part features horizontal mating orientation and screw-based termination with leaf-spring wire guard. Current capacity is 15 A, exceeding the original 10 A specification. ROHS3 compliance and unlimited MSL rating are provided. This substitute requires PCB connector footprint redesign due to horizontal orientation.

Alternative Recommendations: On Shore Technology ED500/7DS and OSTTC070162

Both ED500/7DS and OSTTC070162 provide 7-position configurations with 0.197" (5.00mm) pitch spacing (within standard tolerance of the original 0.200" specification). Both feature horizontal mating orientation and screw-based termination. Current capacity ratings of 15 A exceed the original 10 A specification. ROHS3 compliance is provided. These substitutes require PCB connector footprint redesign.

TE Connectivity 1776266-7 Consideration

The 1776266-7 maintains 10 A current capacity matching the original part and provides horizontal mating orientation with screw-based termination. Pitch spacing is 0.197" (5.00mm). ROHS3 compliance is provided. This substitute requires PCB connector footprint redesign due to horizontal orientation.

All substitute parts meet or exceed the voltage (300 V) and RoHS compliance requirements of the original component. Selection among alternatives depends on specific application constraints regarding mating orientation, termination method, and current capacity requirements.

Frequently Asked Questions (FAQ)

Q: Can the 1331180000 directly replace the 1785860000 without PCB modification?

A: The 1331180000 maintains identical pitch spacing (0.200" / 5.08mm) and vertical mating orientation, allowing direct PCB footprint compatibility. However, the termination method differs: the 1331180000 uses screwless push-in spring termination while the 1785860000 uses screw-clamp termination. Assembly procedures and tooling must be updated accordingly.

Q: Why do some substitute parts have horizontal mating orientation instead of vertical?

A: Horizontal (side-entry) mating orientation represents a functional alternative for applications where connector accessibility or board space constraints differ from the original design. These parts require PCB footprint redesign but provide equivalent electrical performance within the specified parameters.

Q: Are all substitute parts RoHS compliant?

A: Yes. The original 1785860000 is RoHS Compliant. All listed substitute parts carry either RoHS Compliant or ROHS3 Compliant certification, meeting regulatory requirements for modern applications.

Q: What is the significance of the current rating differences between the main part and substitutes?

A: The 1785860000 is rated for 10 A maximum current. Substitute parts with 15 A or 20 A ratings provide higher current capacity, making them suitable for applications requiring the original 10 A specification and applications requiring higher current handling. The higher rating does not create incompatibility; it represents an enhanced capability.

Q: Can I use a substitute part with 0.197" (5.00mm) pitch instead of 0.200" (5.08mm)?

A: The 0.197" and 0.200" pitch specifications represent standard tolerance variations within the terminal block industry. Parts with 0.197" pitch (ED500/7DS, OSTTC070162, 1776266-7) are functionally compatible with 0.200" pitch applications. However, PCB footprint verification is required to confirm mechanical fit within your specific design.

Q: What is MSL rating and why do substitutes show "1 (Unlimited)"?

A: Moisture Sensitivity Level (MSL) rating indicates component sensitivity to moisture during storage and handling. The original 1785860000 shows "Not Applicable," indicating no moisture sensitivity concern. Substitute parts rated MSL 1 (Unlimited) indicate minimal moisture sensitivity with no storage time restrictions, providing equivalent or superior performance in this parameter.

Q: Which substitute part requires the least PCB redesign?

A: The Weidmüller 1331180000 requires no PCB footprint redesign, as it maintains identical pitch spacing (0.200" / 5.08mm) and vertical mating orientation. The primary change is assembly procedure modification due to screwless termination. All other substitutes require PCB footprint redesign due to horizontal mating orientation or pitch spacing differences.

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