TE Connectivity 1-1776489-8 Terminal Block Header Equivalent & Substitute Parts

Part Overview

The TE Connectivity 1-1776489-8 is an 18-position terminal block header with male pins, unshrouded design, and 0.197" (5.00mm) vertical pitch. This component is classified as obsolete, necessitating identification of active equivalent and substitute parts for ongoing production and maintenance applications. The part features solder termination, through-hole mounting, and is rated for 10 A at 250 V (UL). Equivalent alternatives are available from active manufacturers including Assmann WSW Components and On Shore Technology Inc., offering comparable electrical and mechanical specifications with current product status.

Substiute Parts

1-1776489-8

TE Connectivity AMP ConnectorsIn Stock: 12721-1776489-8 Datasheet

Current PartRFQ

A-TB500-OP18

Assmann WSW ComponentsIn Stock: 707A-TB500-OP18 Datasheet

SimilarRFQ

OSTOP180000

On Shore Technology Inc.In Stock: 820OSTOP180000 Datasheet

SimilarRFQ

OSTOP180100

On Shore Technology Inc.In Stock: 857OSTOP180100 Datasheet

SimilarRFQ

OSTOP180200

On Shore Technology Inc.In Stock: 1135OSTOP180200 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TE Connectivity 1-1776489-8 is determined by strict equivalence across the following critical parameters:

Core Electrical Parameters:

• 18 positions with 0.197" (5.00mm) pitch
• Vertical orientation with male pins, unshrouded configuration
• Solder termination and through-hole mounting
• Current rating of 10 A (UL)
• Voltage rating of 250 V or higher (UL)

Core Mechanical Parameters:

• Contact tail length of 0.138" (3.50mm)
• Insulation height of 0.079" (2.00mm)
• Brass contact material
• UL94 V-0 flammability rating

Compliance Parameters:

• Moisture Sensitivity Level 1 (Unlimited)
• ECCN EAR99 classification
• HTSUS 8536.69.4040 tariff code

Substitute parts must maintain equivalence across all core electrical and mechanical parameters. Variations in housing material, contact mating finish, or operating temperature range do not preclude substitution when all critical parameters align. Parts with differing contact tail length or insulation height specifications are identified as partial equivalents with dimensional considerations noted.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: A-TB500-OP18 (Assmann WSW Components)

The A-TB500-OP18 provides the closest functional equivalence to the TE Connectivity 1-1776489-8. This part maintains identical electrical specifications (18 positions, 0.197" pitch, 10 A current rating), identical mechanical dimensions (0.138" contact tail length, 0.079" insulation height), and identical termination method (solder, through-hole). The A-TB500-OP18 offers enhanced voltage rating (300 V versus 250 V), extended operating temperature range (-40°C ~ 115°C versus -55°C ~ 105°C), and active product status with ROHS3 compliance and REACH unaffected certification. This part is suitable for direct substitution in applications where the original TE Connectivity component is no longer available.

Secondary Substitutes: OSTOP180000, OSTOP180100, OSTOP180200 (On Shore Technology Inc.)

The On Shore Technology OSTOP series parts maintain core electrical and mechanical equivalence across 18 positions, 0.197" pitch, vertical orientation, and male pin configuration. All three variants offer 300 V voltage rating and active product status with ROHS3 compliance. Dimensional variations exist:

• OSTOP180000: Contact tail length 0.138" (3.50mm), insulation height 0.138" (3.50mm)
• OSTOP180100: Contact tail length 0.169" (4.29mm), insulation height 0.079" (2.00mm)
• OSTOP180200: Contact tail length 0.138" (3.50mm), insulation height 0.138" (3.50mm)

Selection among OSTOP variants requires verification of PCB layout compatibility based on contact tail length and insulation height specifications. The OSTOP180100 variant exhibits non-standard contact tail length (0.169" versus 0.138") and requires dimensional confirmation before application. OSTOP180000 and OSTOP180200 both feature 0.138" contact tail length matching the original specification but differ in insulation height (0.138" versus 0.079").

Compliance Considerations:

All substitute parts maintain EAR99 export classification and HTSUS 8536.69.4040 tariff code equivalence. The A-TB500-OP18 and all OSTOP variants provide ROHS3 compliance and REACH unaffected status, addressing regulatory requirements for new production applications. The original TE Connectivity part carries "Not applicable" RoHS status and "Vendor Undefined" REACH status, reflecting its obsolete classification.

Frequently Asked Questions (FAQ)

Q: Can the A-TB500-OP18 directly replace the TE Connectivity 1-1776489-8 in existing designs?

A: Yes. The A-TB500-OP18 maintains identical electrical ratings (10 A, 250 V minimum with 300 V capability), identical pitch (0.197" / 5.00mm), identical contact tail length (0.138" / 3.50mm), and identical insulation height (0.079" / 2.00mm). Solder termination and through-hole mounting are identical. Direct substitution is supported for PCB layouts designed for the original part.

Q: What is the difference between the OSTOP180000, OSTOP180100, and OSTOP180200 variants?

A: The three On Shore Technology variants differ in contact tail length and insulation height specifications. OSTOP180000 and OSTOP180200 both feature 0.138" contact tail length matching the original TE Connectivity specification, but OSTOP180000 has 0.138" insulation height while OSTOP180200 has 0.138" insulation height. OSTOP180100 features a longer contact tail (0.169") and standard insulation height (0.079"). Selection depends on PCB layout requirements for solder pad depth and component standoff height.

Q: Are all substitute parts rated for the same current and voltage as the original?

A: The A-TB500-OP18 maintains the 10 A current rating and exceeds the 250 V voltage rating with 300 V capability. The On Shore Technology OSTOP variants specify 300 V voltage rating; current rating specifications are not provided in available documentation. For applications requiring confirmed 10 A current rating, the A-TB500-OP18 is the recommended choice.

Q: What compliance certifications apply to the substitute parts?

A: The A-TB500-OP18 and all OSTOP variants carry ROHS3 compliance and REACH unaffected status. All parts maintain EAR99 export classification and HTSUS 8536.69.4040 tariff code. The A-TB500-OP18 specifies UL94 V-0 flammability rating matching the original part. Flammability ratings for OSTOP variants are not specified in available documentation.

Q: What is the operating temperature range for each substitute part?

A: The A-TB500-OP18 operates across -40°C ~ 115°C, providing extended high-temperature capability compared to the original TE Connectivity specification of -55°C ~ 105°C. Operating temperature ranges for the On Shore Technology OSTOP variants are not specified in available documentation. For applications requiring confirmed temperature range specifications, the A-TB500-OP18 is the recommended choice.

Q: Are these parts available in different packaging options?

A: The A-TB500-OP18 is supplied in bulk packaging. The OSTOP180000, OSTOP180100, and OSTOP180200 variants are supplied in bulk packaging. The original TE Connectivity 1-1776489-8 packaging specification is not provided. Bulk packaging is standard for terminal block headers and supports high-volume production requirements.

Q: What inventory levels are available for each substitute part?

A: Current inventory levels are as follows: A-TB500-OP18 (668 pcs), OSTOP180000 (754 pcs), OSTOP180100 (836 pcs), OSTOP180200 (1034 pcs). The original TE Connectivity 1-1776489-8 maintains 1172 pcs in stock. Inventory availability should be confirmed with component suppliers for production scheduling.

Q: Can I use these parts interchangeably in the same application?

A: The A-TB500-OP18 provides direct interchangeability with identical electrical and mechanical specifications. The OSTOP variants require dimensional verification for contact tail length and insulation height compatibility with specific PCB layouts. Parts with differing dimensional specifications may require PCB redesign or selective application within product families with compatible layouts.