TE Connectivity 1-1445051-2 Equivalent & Substitute Parts

Part Overview

The TE Connectivity 1-1445051-2 is a shrouded vertical header connector with 12 positions at 3.00mm pitch, designed for through-hole board-to-cable/wire applications. This connector features male pins with tin-lead contact finish, locking ramp fastening, and board lock functionality. The part is classified as obsolete, necessitating identification of active equivalent alternatives that maintain electrical and mechanical compatibility for new designs and production continuity.

Key Parameters

Parameter	Value
Connector Type	Header
Contact Type	Male Pin
Number of Positions	12
Pitch - Mating	0.118" (3.00mm)
Mounting Type	Through Hole
Shrouding	Shrouded - 4 Wall
Fastening Type	Locking Ramp
Contact Material	Brass
Insulation Material	Polyamide (PA), Nylon
Voltage Rating	250V
Operating Temperature	-40°C ~ 105°C
Material Flammability Rating	UL94 V-0

Substitute Part Grouping Explanation

Substitution of the TE Connectivity 1-1445051-2 is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

Number of Positions: 12
Pitch - Mating: 0.118" (3.00mm)
Connector Type: Header
Contact Type: Male Pin
Mounting Type: Through Hole
Shrouding: Shrouded - 4 Wall
Fastening Type: Locking Ramp
Contact Material: Brass
Material Flammability Rating: UL94 V-0

Variable Parameters Affecting Substitution:

Insulation Material: Original uses Polyamide (PA), Nylon; substitutes use Liquid Crystal Polymer (LCP), Glass Filled
Contact Finish - Mating: Original uses Tin-Lead; substitutes use Tin or Gold
Features: Original includes Board Lock; substitutes include Board Lock or Board Guide variants
Termination: Original uses Solder; substitutes use Kinked Pin/Solder or Solder-only options

All identified substitutes are Molex Micro-Fit 3.0 43650 series connectors with active product status and ROHS3 compliance, providing direct functional replacement with enhanced material specifications.

Parameter Comparison

Parameter	TE 1-1445051-2	Molex 0436501215	Molex 0436501217	Molex 0436501218	Molex 0436501219	Molex 0436501220	Molex 0436501227	Molex 0436501228	Molex 0436501229
Manufacturer	TE Connectivity	Molex	Molex	Molex	Molex	Molex	Molex	Molex	Molex
Series	Micro MATE-N-LOK	Micro-Fit 3.0 43650	Micro-Fit 3.0 43650	Micro-Fit 3.0 43650	Micro-Fit 3.0 43650	Micro-Fit 3.0 43650	Micro-Fit 3.0 43650	Micro-Fit 3.0 43650	Micro-Fit 3.0 43650
Product Status	Obsolete	Active	Active	Active	Active	Active	Active	Active	Active
Connector Type	Header	Header	Header	Header	Header	Header	Header	Header	Header
Contact Type	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin
Number of Positions	12	12	12	12	12	12	12	12	12
Pitch - Mating	0.118" (3.00mm)	0.118" (3.00mm)	0.118" (3.00mm)	0.118" (3.00mm)	0.118" (3.00mm)	0.118" (3.00mm)	0.118" (3.00mm)	0.118" (3.00mm)	0.118" (3.00mm)
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Shrouding	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall
Fastening Type	Locking Ramp	Locking Ramp	Locking Ramp	Locking Ramp	Locking Ramp	Locking Ramp	Locking Ramp	Locking Ramp	Locking Ramp
Contact Length - Post	0.125" (3.18mm)	0.125" (3.18mm)	0.125" (3.18mm)	0.125" (3.18mm)	0.125" (3.18mm)	0.125" (3.18mm)	0.125" (3.18mm)	0.125" (3.18mm)	0.125" (3.18mm)
Insulation Height	0.364" (9.25mm)	0.390" (9.91mm)	0.390" (9.91mm)	0.390" (9.91mm)	0.390" (9.91mm)	0.390" (9.91mm)	0.390" (9.91mm)	0.390" (9.91mm)	0.390" (9.91mm)
Contact Shape	Square	Square	Square	Square	Square	Square	Square	Square	Square
Contact Material	Brass	Brass	Brass	Brass	Brass	Brass	Brass	Brass	Brass
Insulation Material	Polyamide (PA), Nylon	Liquid Crystal Polymer (LCP), Glass Filled	Liquid Crystal Polymer (LCP), Glass Filled	Liquid Crystal Polymer (LCP), Glass Filled	Liquid Crystal Polymer (LCP), Glass Filled	Liquid Crystal Polymer (LCP), Glass Filled	Liquid Crystal Polymer (LCP), Glass Filled	Liquid Crystal Polymer (LCP), Glass Filled	Liquid Crystal Polymer (LCP), Glass Filled
Contact Finish - Mating	Tin-Lead	Tin	Gold	Tin	Gold	Gold	Tin	Gold	Gold
Contact Finish Thickness - Mating	100.0µin (2.54µm)	100.0µin (2.54µm)	30.0µin (0.76µm)	100.0µin (2.54µm)	15.0µin (0.38µm)	30.0µin (0.76µm)	100.0µin (2.54µm)	15.0µin (0.38µm)	30.0µin (0.76µm)
Contact Finish - Post	Tin-Lead	Tin	Tin	Tin	Tin	Tin	Tin	Tin	Tin
Termination	Solder	Kinked Pin, Solder	Kinked Pin, Solder	Kinked Pin, Solder	Kinked Pin, Solder	Kinked Pin, Solder	Solder	Solder	Solder
Features	Board Lock	Board Guide	Board Guide	Board Lock	Board Lock	Board Lock	Board Guide	Board Guide	Board Guide
Material Flammability Rating	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0
Insulation Color	Black	Black	Black	Black	Black	Black	Black	Black	Black
RoHS Status	Not applicable	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
REACH Status	Vendor Undefined	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected
ECCN	EAR99	EAR99	EAR99	EAR99	EAR99	EAR99	EAR99	EAR99	EAR99

Engineering Selection Recommendations

All Molex Micro-Fit 3.0 43650 series substitutes provide direct functional replacement for the obsolete TE Connectivity 1-1445051-2. Selection among substitute options is determined by specific application requirements:

For Board Lock Feature Requirement: Select Molex 0436501218, 0436501219, or 0436501220 to maintain board lock functionality equivalent to the original part.

For Board Guide Feature: Select Molex 0436501215, 0436501227, 0436501228, or 0436501229 for applications where board guide positioning is acceptable.

For Solder-Only Termination: Select Molex 0436501227, 0436501228, or 0436501229 to match the original solder-only termination method. Kinked pin variants (0436501215, 0436501217, 0436501218, 0436501219, 0436501220) provide enhanced mechanical retention during soldering.

For Contact Finish Specification: Tin-finish options (0436501215, 0436501218, 0436501227) provide lead-free compliance equivalent to the original tin-lead finish. Gold-plated variants (0436501217, 0436501219, 0436501220, 0436501228, 0436501229) offer enhanced corrosion resistance for demanding environments.

All substitute parts are ROHS3 compliant and REACH unaffected, providing regulatory compliance superior to the original obsolete part. All substitutes maintain UL94 V-0 flammability rating and MSL 1 moisture sensitivity classification.

Frequently Asked Questions (FAQ)

Q: Can Molex 0436501215 directly replace TE Connectivity 1-1445051-2?

A: Molex 0436501215 provides functional equivalence for 12-position 3.00mm pitch header applications. The primary differences are insulation material (LCP vs. Nylon), contact finish (Tin vs. Tin-Lead), and features (Board Guide vs. Board Lock). For applications requiring board lock functionality, select Molex 0436501218, 0436501219, or 0436501220 instead.

Q: What is the difference between Board Lock and Board Guide features?

A: Board Lock provides mechanical retention through a locking mechanism that engages the mating connector. Board Guide provides alignment guidance without locking engagement. Selection depends on application requirements for connector retention during operation.

Q: Are all Molex substitutes ROHS3 compliant?

A: All identified Molex Micro-Fit 3.0 43650 series substitutes are ROHS3 compliant and REACH unaffected, providing regulatory compliance for current manufacturing standards.

Q: What is the difference between Tin and Gold contact finishes?

A: Tin-finish contacts (100.0µin thickness) provide standard corrosion resistance and lead-free compliance. Gold-plated contacts (15.0µin to 30.0µin thickness) offer enhanced corrosion resistance and improved contact reliability in high-reliability applications. Both finishes are electrically compatible with the original tin-lead specification.

Q: Does insulation material affect electrical performance?

A: Liquid Crystal Polymer (LCP) glass-filled insulation used in Molex substitutes provides superior thermal and mechanical properties compared to Polyamide (PA) Nylon in the original part. Both materials meet UL94 V-0 flammability requirements and maintain equivalent electrical performance for this connector category.

Q: What is the significance of kinked pin termination?

A: Kinked pin termination provides mechanical retention during soldering, reducing solder joint stress and improving reliability. Solder-only termination relies on solder flow alone. Both methods are electrically equivalent; selection depends on manufacturing process requirements.

Q: Are the insulation height differences significant?

A: The original part has 0.364" (9.25mm) insulation height; all Molex substitutes have 0.390" (9.91mm) height. This 0.026" (0.66mm) difference may affect board layout spacing. Verify clearance in applications with tight vertical constraints.

Q: Can I mix Board Lock and Board Guide variants in the same assembly?

A: Both feature types are mechanically compatible with standard mating connectors. However, assembly consistency is recommended to maintain uniform connector retention characteristics across the product.

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