TE Connectivity 770251-4 Socket Contact Equivalent & Substitute Parts

Part Overview

The TE Connectivity AMP Connectors 770251-4 is an active rectangular connector socket contact designed for crimp termination with 14-20 AWG wire gauges. This component is part of the Universal MATE-N-LOK II series and features gold plating for enhanced conductivity and corrosion resistance. The socket contact is supplied in bulk packaging and maintains unlimited moisture sensitivity rating (MSL 1).

Alternative equivalent parts are necessary when bulk packaging is unavailable, when RoHS3 compliance is required for specific applications, or when alternative packaging formats better suit assembly and logistics requirements.

Substiute Parts

770251-4

TE Connectivity AMP ConnectorsIn Stock: 1078770251-4 Datasheet

Current PartRFQ

1-770251-0

TE Connectivity AMP ConnectorsIn Stock: 75011-770251-0 Datasheet

DirectRFQ

770008-4

TE Connectivity AMP ConnectorsIn Stock: 36556770008-4 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for rectangular connector socket contacts is determined by strict alignment of the following parameters:

Critical Matching Parameters:

• Pin or Socket designation (Socket)
• Wire Gauge range (14-20 AWG)
• Contact Termination method (Crimp)
• Contact Finish material (Gold)
• Contact Finish Thickness (30.0µin / 0.76µm)
• Series compatibility (Universal MATE-N-LOK II)
• Moisture Sensitivity Level (MSL 1)

The substitute parts listed below maintain identical electrical and mechanical specifications across all critical parameters. Differences in packaging format (Bulk versus Cut Tape) and RoHS compliance status do not affect functional interchangeability for the socket contact itself.

Parameter Comparison

Engineering Selection Recommendations

1-770251-0 (Direct Substitute - Recommended for RoHS3 Applications)

The 1-770251-0 is functionally identical to the 770251-4 across all electrical and mechanical parameters. This part achieves ROHS3 compliance, making it the appropriate selection for applications subject to RoHS3 regulatory requirements. Both parts are supplied in bulk packaging. The REACH status difference (Vendor Undefined versus REACH Affected) reflects supplier documentation variance and does not indicate functional incompatibility.

770008-4 (Similar Substitute - Alternative Packaging)

The 770008-4 maintains identical electrical and mechanical specifications but is supplied in Cut Tape (CT) packaging rather than bulk format. This part is suitable for applications where Cut Tape packaging aligns with assembly line automation or inventory management protocols. The RoHS non-compliant status matches the main part 770251-4. Selection of this substitute should be based on packaging requirements rather than functional differences.

Compliance Considerations

Applications requiring RoHS3 compliance must specify 1-770251-0. Applications without RoHS3 mandates may use either 770251-4 or 770008-4 based on packaging preference. All three parts are active products with unlimited availability status.

Frequently Asked Questions (FAQ)

Q: Are these socket contacts mechanically interchangeable?

A: Yes. The 770251-4, 1-770251-0, and 770008-4 are mechanically interchangeable. All three parts feature identical wire gauge ranges (14-20 AWG), crimp termination specifications, gold contact finish at 30.0µin thickness, and Universal MATE-N-LOK II series compatibility.

Q: What is the difference between bulk and Cut Tape packaging?

A: Bulk packaging supplies loose components in quantity, while Cut Tape (CT) packaging delivers components on continuous tape cut to specified lengths. Cut Tape packaging is typically used for automated pick-and-place assembly systems. The socket contact itself is functionally identical regardless of packaging format.

Q: Can I use 770008-4 as a direct replacement for 770251-4?

A: Yes, 770008-4 is functionally equivalent to 770251-4. The primary difference is packaging format (Cut Tape versus Bulk). Both parts share identical electrical specifications, wire gauge ratings, contact finish, and series compatibility. Selection between them depends on packaging requirements and assembly processes.

Q: Why would I choose 1-770251-0 over 770251-4?

A: The 1-770251-0 is ROHS3 compliant, while 770251-4 is RoHS non-compliant. Applications subject to RoHS3 regulatory requirements must use 1-770251-0. For applications without RoHS3 mandates, both parts are functionally equivalent.

Q: Are there any electrical performance differences between these parts?

A: No. All three parts feature identical contact finish material (gold), contact finish thickness (30.0µin / 0.76µm), wire gauge compatibility (14-20 AWG), and crimp termination specifications. Electrical performance is equivalent across all three part numbers.

Q: What does MSL 1 (Unlimited) mean for these socket contacts?

A: Moisture Sensitivity Level 1 indicates the component has unlimited shelf life and requires no special moisture control during storage or handling. All three substitute parts carry MSL 1 rating.

Q: Can these socket contacts be used with different wire gauges?

A: No. These socket contacts are specified for 14-20 AWG wire only. Wire gauges outside this range are not compatible with the crimp termination specifications of these parts.