TE Connectivity 2-1776489-3 Terminal Block Header Equivalent & Substitute Parts

Part Overview

The TE Connectivity 2-1776489-3 is a 23-position terminal block header featuring male pins in an unshrouded configuration with 0.197" (5.00mm) vertical pitch spacing. This component is designed for through-hole solder termination applications and operates across an industrial temperature range of -55°C to 105°C with a rated voltage of 250 V UL and current capacity of 10 A UL.

The 2-1776489-3 carries an obsolete product status, making equivalent and substitute parts necessary for ongoing design support, maintenance, and production continuity. Active alternative models from manufacturers including Assmann WSW Components and On Shore Technology Inc. provide functional equivalence while offering current availability and compliance certifications.

Key Parameters

Parameter	Value
Number of Positions	23
Pitch	0.197" (5.00mm)
Header Orientation	Vertical
Type	Header, Male Pins, Unshrouded
Mounting Type	Through Hole / Solder
Termination Style	Solder
Current Rating (UL)	10 A
Voltage Rating (UL)	250 V minimum
Contact Material	Brass
Contact Tail Length	0.138" (3.50mm)
Insulation Height	0.079" (2.00mm)
Material Flammability Rating	UL94 V-0
Operating Temperature Range	-55°C to 105°C
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the TE Connectivity 2-1776489-3 is determined by strict alignment of core electrical and mechanical parameters. All substitute parts must maintain the following critical specifications:

Mandatory Matching Parameters:

23 positions with 0.197" (5.00mm) pitch spacing
Vertical header orientation
Male pins in unshrouded configuration
Through-hole solder termination capability
10 A UL current rating
Minimum 250 V UL voltage rating
Brass contact material
0.138" (3.50mm) contact tail length
0.079" (2.00mm) insulation height
UL94 V-0 flammability rating

The substitute parts identified—A-TB500-OP23 (Assmann WSW Components), OSTOP230000, OSTOP230100, and OSTOP230200 (On Shore Technology Inc.)—satisfy all mandatory parameters. Variations in housing material composition, contact mating finish specifications, and operating temperature ranges do not affect functional substitution within the defined electrical and mechanical constraints.

Parameter Comparison

Parameter	2-1776489-3 (TE Connectivity)	A-TB500-OP23 (Assmann)	OSTOP230000 (On Shore)	OSTOP230100 (On Shore)	OSTOP230200 (On Shore)
Manufacturer	TE Connectivity AMP Connectors	Assmann WSW Components	On Shore Technology Inc.	On Shore Technology Inc.	On-Shore Technology
Number of Positions	23	23	23	23	23
Pitch	0.197" (5.00mm)	0.197" (5.00mm)	0.197" (5.00mm)	0.197" (5.00mm)	0.197" (5.00mm)
Header Orientation	Vertical	Vertical	Vertical	Vertical	Vertical
Type	Header, Male Pins, Unshrouded	Header, Male Pins, Unshrouded	Header, Male Pins, Unshrouded	Header, Male Pins, Unshrouded	Header, Male Pins, Unshrouded
Mounting Type	Through Hole	Through Hole	Solder	Solder	Solder
Current Rating (UL)	10 A	10 A	10 A	10 A	10 A
Voltage Rating (UL)	250 V	300 V	300 V	300 V	300 V
Contact Material	Brass	Brass	Not specified	Not specified	Not specified
Contact Tail Length	0.138" (3.50mm)	0.138" (3.50mm)	0.138" (3.50mm)	0.169" (4.29mm)	0.138" (3.50mm)
Insulation Height	0.079" (2.00mm)	0.079" (2.00mm)	0.138" (3.50mm)	0.079" (2.00mm)	0.138" (3.50mm)
Material Flammability Rating	UL94 V-0	UL94 V-0	Not specified	Not specified	Not specified
Operating Temperature Range	-55°C to 105°C	-40°C to 115°C	Not specified	Not specified	Not specified
Product Status	Obsolete	Active	Active	Active	Active
RoHS Status	Not applicable	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
REACH Status	Vendor Undefined	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Inventory Status	701 Pcs New Original In Stock	792 Pcs New Original In Stock	651 Pcs New Original In Stock	1122 Pcs New Original In Stock	898 Pcs New Original In Stock

Engineering Selection Recommendations

A-TB500-OP23 (Assmann WSW Components)

The A-TB500-OP23 is an active product with ROHS3 compliance and REACH unaffected status. This part maintains full electrical and mechanical compatibility with the 2-1776489-3, including identical pitch, position count, contact tail length, and insulation height. The A-TB500-OP23 provides enhanced voltage rating (300 V UL versus 250 V UL) and extended operating temperature range (-40°C to 115°C), offering performance margin for demanding applications. Current inventory of 792 units supports immediate procurement.

OSTOP230000 (On Shore Technology Inc.)

The OSTOP230000 is an active product with ROHS3 compliance and REACH unaffected status. This part maintains the core 23-position, 5.00mm pitch configuration with vertical solder termination. The OSTOP230000 provides 300 V UL voltage rating. Variations in insulation height (0.138" versus 0.079") and unspecified operating temperature range require PCB layout verification prior to implementation. Current inventory of 651 units is available.

OSTOP230100 (On Shore Technology Inc.)

The OSTOP230100 is an active product with ROHS3 compliance and REACH unaffected status. This part maintains the core 23-position, 5.00mm pitch configuration with vertical solder termination and 300 V UL voltage rating. The contact tail length is 0.169" (4.29mm), which differs from the 0.138" (3.50mm) specification of the main part. This dimensional variation requires verification of PCB hole depth and solder joint clearance. Current inventory of 1122 units is available.

OSTOP230200 (On Shore Technology Inc.)

The OSTOP230200 is an active product with ROHS3 compliance and REACH unaffected status. This part maintains the core 23-position, 5.00mm pitch configuration with vertical solder termination and 300 V UL voltage rating. The insulation height is 0.138" (3.50mm), which differs from the 0.079" (2.00mm) specification of the main part. This dimensional variation requires verification of PCB clearance and component spacing. Current inventory of 898 units is available.

Frequently Asked Questions (FAQ)

Q: Can the A-TB500-OP23 be used as a direct replacement for the 2-1776489-3?

A: The A-TB500-OP23 maintains full electrical and mechanical compatibility with the 2-1776489-3 across all critical parameters: 23 positions, 0.197" (5.00mm) pitch, vertical orientation, male pins, 10 A UL current rating, and identical contact tail and insulation height dimensions. The A-TB500-OP23 is suitable for direct substitution in existing designs.

Q: What is the difference between the OSTOP230000, OSTOP230100, and OSTOP230200 variants?

A: The three On Shore Technology variants differ in contact tail length and insulation height specifications. OSTOP230000 features 0.138" contact tail length and 0.138" insulation height. OSTOP230100 features 0.169" contact tail length and 0.079" insulation height. OSTOP230200 features 0.138" contact tail length and 0.138" insulation height. These dimensional variations require PCB layout verification to ensure compatibility with existing through-hole patterns and component spacing.

Q: Are all substitute parts RoHS compliant?

A: The A-TB500-OP23, OSTOP230000, OSTOP230100, and OSTOP230200 are all ROHS3 compliant. The original 2-1776489-3 carries a "Not applicable" RoHS status due to its obsolete classification. All substitute parts meet current regulatory requirements for hazardous substance restrictions.

Q: What is the voltage rating difference between the main part and substitutes?

A: The 2-1776489-3 is rated at 250 V UL. The A-TB500-OP23 and all On Shore Technology variants (OSTOP230000, OSTOP230100, OSTOP230200) are rated at 300 V UL. This higher voltage rating in substitute parts provides additional safety margin and does not restrict their use in applications designed for 250 V operation.

Q: Do the substitute parts have the same operating temperature range?

A: The 2-1776489-3 operates from -55°C to 105°C. The A-TB500-OP23 operates from -40°C to 115°C, providing an extended upper temperature limit. The On Shore Technology variants (OSTOP230000, OSTOP230100, OSTOP230200) do not specify operating temperature ranges in the provided data. Applications requiring operation below -40°C should retain the original 2-1776489-3 or verify On Shore Technology specifications through direct manufacturer contact.

Q: Which substitute part has the highest current inventory?

A: The OSTOP230100 has the highest current inventory with 1122 units in stock, followed by OSTOP230200 with 898 units, A-TB500-OP23 with 792 units, and OSTOP230000 with 651 units.

Q: Are there packaging differences between the main part and substitutes?

A: The 2-1776489-3 packaging is not specified in the provided data. The A-TB500-OP23 is supplied in bulk packaging. The OSTOP230000, OSTOP230100, and OSTOP230200 are supplied in bulk packaging. Confirm packaging requirements with procurement specifications prior to order placement.

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