1-1776269-3 Terminal Block Equivalent & Substitute Parts

Part Overview

The 1-1776269-3 is a 13-position wire-to-board terminal block manufactured by TE Connectivity AMP Connectors. This component features horizontal side-entry configuration with 0.197" (5.00mm) pitch spacing and through-hole mounting on printed circuit boards. The part operates at 10 A current capacity and 300 V voltage rating with screw-leaf spring wire termination and integrated wire guard.

The 1-1776269-3 carries an obsolete product status. Identifying equivalent and substitute terminal blocks ensures design continuity and procurement availability for applications requiring compatible 13-position or alternative position-count configurations with matching electrical and mechanical parameters.

Key Parameters

Parameter	Value
Positions Per Level	13
Pitch	0.197" (5.00mm)
Mating Orientation	Horizontal with Board
Current Rating	10 A
Voltage Rating	300 V
Wire Gauge	14-22 AWG
Mounting Type	Through Hole
Wire Termination	Screw - Leaf Spring, Wire Guard
Operating Temperature Range	-55°C ~ 105°C
Housing Material	Polyamide (PA66), Nylon 6/6
Contact Material - Plating	Brass - Copper Tin Plated

Substitute Part Grouping Explanation

Substitute terminal blocks for the 1-1776269-3 are evaluated based on the following critical parameters that determine functional compatibility:

Primary Compatibility Criteria:

Pitch spacing (0.197" / 5.00mm)
Mounting type (through-hole PCB)
Wire termination method (screw-based with leaf spring and wire guard)
Voltage rating (300 V minimum)
Mating orientation (horizontal or vertical configuration)
Number of positions (13-position primary requirement)

OSTT3130451 qualifies as a direct substitute for 13-position applications. This part maintains identical pitch, position count, mounting type, wire termination method, and voltage rating. The part operates at 8 A current capacity, which is lower than the original 10 A specification. Wire gauge acceptance extends to 14-26 AWG, providing broader wire size compatibility compared to the original 14-22 AWG range.

OSTT3190453 functions as an alternative configuration substitute with 19 positions instead of 13. This part maintains the same 0.197" (5.00mm) pitch and 300 V voltage rating but features vertical (top-entry) mating orientation rather than horizontal side-entry. The 19-position count accommodates applications requiring expanded terminal capacity within the same pitch footprint. Current rating is 8 A.

Parameter Comparison

Parameter	1-1776269-3 (Main)	OSTT3130451	OSTT3190453
Manufacturer	TE Connectivity AMP Connectors	On Shore Technology Inc.	On Shore Technology Inc.
Positions Per Level	13	13	19
Pitch	0.197" (5.00mm)	0.197" (5.00mm)	0.197" (5.00mm)
Mating Orientation	Horizontal with Board	Horizontal with Board	Vertical with Board
Current Rating	10 A	8 A	8 A
Voltage Rating	300 V	300 V	300 V
Wire Gauge	14-22 AWG	14-26 AWG	14-26 AWG
Mounting Type	Through Hole	Through Hole	Through Hole
Wire Termination	Screw - Leaf Spring, Wire Guard	Screw - Leaf Spring, Wire Guard	Screw - Leaf Spring, Wire Guard
Operating Temperature Range	-55°C ~ 105°C	-30°C ~ 105°C	-30°C ~ 105°C
Housing Material	Polyamide (PA66), Nylon 6/6	Thermoplastic	Thermoplastic
Contact Material - Plating	Brass - Copper Tin Plated	Brass	Brass
Product Status	Obsolete	Active	Active
RoHS Status	Not applicable	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

For Direct 13-Position Replacement:

OSTT3130451 serves as the primary substitute for applications requiring identical 13-position configuration with horizontal side-entry orientation. This part is active in production status, ensuring long-term availability and supply chain stability. OSTT3130451 carries ROHS3 compliance certification, meeting current environmental regulatory requirements. The 8 A current rating is suitable for applications where the original 10 A specification exceeds actual circuit requirements. Extended wire gauge acceptance (14-26 AWG) provides design flexibility for wire sizing optimization.

For Alternative Configuration (Increased Position Count):

OSTT3190453 addresses applications where terminal capacity expansion is beneficial within the same 5.00mm pitch footprint. The 19-position configuration accommodates additional circuit connections without increasing the overall component footprint width. This part requires vertical (top-entry) PCB mounting orientation, necessitating circuit board layout modification compared to the horizontal side-entry original design. OSTT3190453 maintains active production status and ROHS3 compliance.

Compliance Considerations:

Both substitute parts carry ROHS3 compliance and REACH Unaffected status, aligning with current environmental and regulatory standards. The original 1-1776269-3 lists RoHS status as not applicable due to its obsolete classification. Selection of active-status substitutes ensures compliance with modern procurement and environmental requirements.

Frequently Asked Questions (FAQ)

Q: Can OSTT3130451 directly replace 1-1776269-3 in existing designs?

A: OSTT3130451 maintains identical pitch (5.00mm), position count (13), mating orientation (horizontal), mounting type (through-hole), and wire termination method (screw-leaf spring with wire guard). The primary difference is reduced current rating (8 A versus 10 A). Direct substitution is applicable for circuits operating at 8 A or below. PCB footprint compatibility requires verification of hole diameter and spacing alignment.

Q: What is the impact of the 8 A current rating on OSTT3130451 compared to the original 10 A?

A: The 8 A rating on OSTT3130451 represents the maximum continuous current per terminal. Applications designed for 10 A operation require circuit redesign or load distribution across additional terminals to remain within the 8 A per-terminal limit. Verify actual circuit current requirements before substitution.

Q: Why does OSTT3190453 have 19 positions instead of 13?

A: OSTT3190453 is an alternative configuration offering expanded terminal capacity within the same 5.00mm pitch spacing. The 19-position count accommodates applications requiring additional circuit connections. This part requires vertical (top-entry) mounting orientation, differing from the horizontal side-entry configuration of the original part. Use OSTT3190453 only when circuit board layout permits vertical connector orientation and additional terminal positions are beneficial.

Q: Are there wire gauge compatibility differences between the main part and substitutes?

A: The original 1-1776269-3 accepts 14-22 AWG wire. Both OSTT3130451 and OSTT3190453 accept 14-26 AWG wire, providing broader compatibility with smaller gauge conductors. Existing designs using 14-22 AWG wire remain fully compatible with substitute parts.

Q: What is the operating temperature difference between the original and substitute parts?

A: The original 1-1776269-3 operates from -55°C to 105°C. Both substitute parts (OSTT3130451 and OSTT3190453) operate from -30°C to 105°C. Applications requiring operation below -30°C are not suitable for these substitutes. Verify minimum operating temperature requirements before substitution.

Q: Do the substitute parts carry environmental compliance certifications?

A: Both OSTT3130451 and OSTT3190453 carry ROHS3 compliance and REACH Unaffected status. The original 1-1776269-3 lists RoHS status as not applicable due to obsolete classification. Substitution with compliant parts ensures alignment with current environmental regulations and procurement standards.

Q: What packaging format is available for the substitute parts?

A: Both OSTT3130451 and OSTT3190453 are supplied in bulk packaging. Verify packaging quantity requirements and handling procedures for production integration.

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