TE Connectivity 145251-2 Card Edge Connector Equivalent & Substitute Parts

Part Overview

The TE Connectivity 145251-2 is a 242-position female card edge connector designed for CPU Slot 1 applications. This connector features a 0.100" (2.54mm) pitch, dual read-out configuration, and gold-plated phosphor bronze contacts rated for through-hole solder termination with staggered contact arrangement. The part is classified as obsolete, necessitating identification of active equivalent components to support ongoing procurement and system maintenance requirements.

Key Parameters

Parameter	Value
Connector Type	Card Edge Connector
Card Type	CPU - Slot 1
Number of Positions	242
Gender	Female
Pitch	0.100" (2.54mm)
Number of Rows	2
Positions per Row	73; 48
Card Thickness	0.062" (1.57mm)
Read Out Configuration	Dual
Mounting Type	Through Hole
Termination	Solder, Staggered
Contact Material	Phosphor Bronze
Contact Finish	Gold
Contact Finish Thickness	15.0µin (0.38µm)
Insulation Material	Thermoplastic
Color	Brown
Features	Board Lock
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the TE Connectivity 145251-2 is determined by strict equivalence across all electrical and mechanical parameters. The substitute part must maintain identical specifications for:

Card edge connector classification and CPU Slot 1 application
242-position female configuration with dual read-out
0.100" (2.54mm) pitch and 2-row arrangement (73 and 48 positions per row)
0.062" (1.57mm) card thickness tolerance
Through-hole solder termination with staggered contact arrangement
Phosphor bronze contact material with gold plating at 15.0µin thickness
Thermoplastic insulation body in brown color
Board lock mounting feature
Moisture Sensitivity Level 1 rating

The substitute part TE Connectivity 5145251-2 satisfies all these requirements while offering improved product status and regulatory compliance.

Parameter Comparison

Parameter	145251-2 (Main Part)	5145251-2 (Substitute)
Manufacturer	TE Connectivity AMP Connectors	TE Connectivity AMP Connectors
Category	Card Edge Connectors	Card Edge Connectors
Card Type	CPU - Slot 1	CPU - Slot 1
Gender	Female	Female
Number of Positions	242	242
Positions per Row	73; 48	73; 48
Number of Rows	2	2
Pitch	0.100" (2.54mm)	0.100" (2.54mm)
Card Thickness	0.062" (1.57mm)	0.062" (1.57mm)
Read Out	Dual	Dual
Features	Board Lock	Board Lock
Mounting Type	Through Hole	Through Hole
Termination	Solder, Staggered	Solder, Staggered
Contact Material	Phosphor Bronze	Phosphor Bronze
Contact Finish	Gold	Gold
Contact Finish Thickness	15.0µin (0.38µm)	15.0µin (0.38µm)
Insulation Material	Thermoplastic	Thermoplastic
Color	Brown	Brown
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)
Product Status	Obsolete	Active
RoHS Status	RoHS non-compliant	RoHS Compliant
Packaging	Bulk	Tray

Engineering Selection Recommendations

The TE Connectivity 5145251-2 is the direct functional equivalent of the 145251-2 and is the appropriate selection for new designs and component replenishment. The substitute part maintains complete electrical and mechanical compatibility while offering two significant advantages:

Product Status: The 5145251-2 carries Active product status, ensuring continued manufacturer support, availability, and technical documentation. The 145251-2 is classified as Obsolete, indicating discontinued production and limited long-term availability.

Regulatory Compliance: The 5145251-2 is RoHS Compliant, meeting current environmental and hazardous substance restrictions. The 145251-2 is RoHS non-compliant, which may present procurement restrictions in regulated markets and applications.

Both parts share identical electrical performance, mechanical dimensions, contact specifications, and termination characteristics. The packaging difference (Tray for 5145251-2 versus Bulk for 145251-2) does not affect functional compatibility.

Frequently Asked Questions (FAQ)

Q: Are the 145251-2 and 5145251-2 electrically interchangeable?

A: Yes. Both connectors are 242-position female card edge connectors with identical electrical specifications, including contact material (phosphor bronze), finish (gold at 15.0µin), pitch (0.100"), and dual read-out configuration. They are direct electrical equivalents.

Q: What are the mechanical compatibility requirements?

A: Both connectors are designed for CPU Slot 1 applications with identical mechanical specifications: 0.062" (1.57mm) card thickness, 2-row configuration (73 and 48 positions), through-hole solder termination with staggered contacts, and board lock mounting feature. They are mechanically interchangeable.

Q: Why is the 145251-2 listed as Obsolete?

A: The 145251-2 has been discontinued by TE Connectivity. The 5145251-2 represents the active production equivalent and is the recommended component for ongoing procurement.

Q: Does the packaging difference affect compatibility?

A: No. The 145251-2 is supplied in Bulk packaging while the 5145251-2 is supplied in Tray packaging. This difference affects only handling and storage logistics, not electrical or mechanical performance.

Q: What is the significance of RoHS compliance?

A: The 5145251-2 is RoHS Compliant, meeting Restriction of Hazardous Substances regulations. The 145251-2 is RoHS non-compliant. RoHS compliance is required for many applications and markets. The 5145251-2 is the appropriate choice for applications subject to RoHS requirements.

Q: Can the 145251-2 be used in new designs?

A: The 145251-2 is Obsolete and not recommended for new designs. The 5145251-2 should be specified for all new applications to ensure long-term component availability and regulatory compliance.

Q: Are there any performance differences between these connectors?

A: No. Both connectors deliver identical performance across all specified electrical and mechanical parameters. The differences are limited to product status and regulatory compliance.

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