Molex 0009503121 Rectangular Connector Housing - Equivalent & Substitute Parts

Part Overview

The Molex 0009503121 is a 12-position rectangular connector housing with 0.156" (3.96mm) pitch, designed for free-hanging in-line applications using crimp termination. This receptacle housing is part of the KK396 series and is actively manufactured. Substitute parts are identified to provide alternative sourcing options when the primary part is unavailable or when specific material or compliance requirements necessitate component alternatives.

Substiute Parts

0009503121

MolexIn Stock: 26170009503121 Datasheet

Current PartRFQ

0009931200

MolexIn Stock: 10890009931200 Datasheet

Parametric EquivalentRFQ

1-640250-2

TE Connectivity AMP ConnectorsIn Stock: 21401-640250-2 Datasheet

MFR RecommendedRFQ

1-640251-2

TE Connectivity AMP ConnectorsIn Stock: 208631-640251-2 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the Molex 0009503121 is determined by strict equivalence across the following critical parameters:

• Connector Type: Receptacle (all substitutes must be receptacle housings)
• Number of Positions: 12 (exact match required)
• Pitch: 0.156" (3.96mm) (exact match required)
• Number of Rows: 1 (exact match required)
• Mounting Type: Free Hanging (In-Line) (exact match required)
• Contact Termination: Crimp (exact match required)
• Insulation Material: Polyamide (PA), Nylon (exact match required)

Substitute parts are grouped into two categories:

Parametric Equivalents (Molex 0009931200): Identical electrical and mechanical specifications with variation only in housing color (Black vs. Natural). Series designation differs (3069 vs. KK396) but maintains full functional compatibility.

Manufacturer-Recommended Equivalents (TE Connectivity 1-640250-2 and 1-640251-2): Cross-manufacturer alternatives from TE Connectivity AMP Connectors series SL-156. These parts maintain all critical parameters with documented operating temperature range and equivalent compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

All listed substitute parts maintain active product status and meet or exceed the compliance requirements of the primary part.

Molex 0009931200 is a direct parametric equivalent suitable for applications where housing color specification permits black insulation material. This part shares identical electrical and mechanical characteristics with the primary part and maintains ROHS3 compliance.

TE Connectivity 1-640250-2 and 1-640251-2 are manufacturer-recommended cross-manufacturer alternatives. Both parts provide documented operating temperature specifications (-55°C ~ 105°C) and maintain equivalent mechanical and electrical compatibility. The 1-640251-2 variant offers the highest inventory availability (20,841 pcs) and ROHS3 compliance certification. The 1-640250-2 variant provides RoHS compliance with documented operating temperature range.

Selection between TE Connectivity alternatives should be based on application-specific temperature requirements and supply chain availability. Both parts are functionally interchangeable with the primary Molex housing within the specified electrical and mechanical parameters.

Frequently Asked Questions (FAQ)

Q: Can Molex 0009931200 be used as a direct replacement for Molex 0009503121?

A: Yes. The 0009931200 is a parametric equivalent with identical electrical and mechanical specifications. The only difference is housing color (Black vs. Natural). Substitution is valid provided the application does not have color-specific requirements.

Q: What is the primary difference between Molex and TE Connectivity substitute options?

A: Both manufacturers provide 12-position, 0.156" pitch receptacle housings with identical mechanical mounting and crimp termination. TE Connectivity parts (SL-156 series) provide explicit operating temperature specifications (-55°C ~ 105°C), while Molex specifications do not document this parameter. All parts maintain equivalent MSL ratings and RoHS compliance.

Q: Are TE Connectivity 1-640250-2 and 1-640251-2 interchangeable?

A: Yes. Both parts are functionally equivalent 12-position receptacle housings with 0.156" pitch, crimp termination, and identical insulation material. The primary difference is fastening type specification (Locking Ramp vs. unspecified). Both maintain equivalent electrical and mechanical performance within the specified parameters.

Q: Do these substitute parts require different contact pins?

A: All listed parts are housings only. Contacts are not included with any variant. Contact selection must be based on the specific application requirements and mating connector specifications. Verify contact compatibility with the selected housing series.

Q: What compliance certifications apply to all substitute options?

A: All parts maintain MSL 1 (Unlimited) moisture sensitivity rating. RoHS compliance is confirmed for all variants: Molex parts are ROHS3 compliant; TE Connectivity 1-640250-2 is RoHS compliant; TE Connectivity 1-640251-2 is ROHS3 compliant. REACH status is unaffected or vendor-undefined across all parts.