Amphenol ICC 71920-405 Rectangular Connector - Equivalent & Substitute Parts

Part Overview

The Amphenol ICC 71920-405 is a 5-position receptacle connector with 0.100" (2.54mm) pitch, designed for board-to-board applications using through-hole solder termination. This connector features a push-pull fastening mechanism and is part of the Dubox™ series. The main part is classified as obsolete, which necessitates identification of active substitute components that maintain electrical and mechanical compatibility for ongoing production and repair applications.

Key Parameters

Parameter	Specification
Connector Type	Receptacle, Bottom or Top Entry
Number of Positions	5
Pitch - Mating	0.100" (2.54mm)
Mounting Type	Through Hole
Termination	Solder
Fastening Type	Push-Pull
Contact Type	Female Socket
Style	Board to Board
Insulation Material	Thermoplastic, Glass Filled
Material Flammability Rating	UL94 V-0
Contact Material	Phosphor Bronze
Insulation Color	Blue
Insulation Height	0.335" (8.51mm)
Contact Length - Post	0.122" (3.10µm)
Contact Finish Thickness - Mating	78.7µin (2.00µm)
Contact Finish Thickness - Post	78.7µin (2.00µm)
Moisture Sensitivity Level (MSL)	1 (Unlimited)
Series	Dubox™

Substitute Part Grouping Explanation

Substitution of the 71920-405 is determined by strict equivalence across the following critical parameters:

Connector geometry and mating interface: 5 positions at 0.100" (2.54mm) pitch, receptacle configuration with bottom or top entry capability
Mechanical compatibility: Through-hole mounting with identical insulation height (0.335"), contact length, and contact shape (square)
Electrical interface: Female socket contacts in phosphor bronze with specified finish thickness
Termination method: Solder termination on through-hole posts
Fastening mechanism: Push-pull fastening type
Material and safety compliance: Thermoplastic glass-filled insulation rated UL94 V-0

The substitute part 71920-405LF maintains all these parameters identically. The primary difference is the contact finish specification on the mating surface (tin-lead versus tin) and the product status transition from obsolete to active.

Parameter Comparison

Parameter	71920-405 (Main Part)	71920-405LF (Substitute)
Manufacturer	Amphenol ICC (FCI)	Amphenol ICC (FCI)
Series	Dubox™	Dubox™
Product Status	Obsolete	Active
Number of Positions	5	5
Pitch - Mating	0.100" (2.54mm)	0.100" (2.54mm)
Connector Type	Receptacle, Bottom or Top Entry	Receptacle, Bottom or Top Entry
Contact Type	Female Socket	Female Socket
Mounting Type	Through Hole	Through Hole
Termination	Solder	Solder
Fastening Type	Push-Pull	Push-Pull
Contact Finish - Mating	Tin-Lead	Tin
Contact Finish - Post	Tin-Lead	Tin
Contact Finish Thickness - Mating	78.7µin (2.00µm)	78.7µin (2.00µm)
Contact Finish Thickness - Post	78.7µin (2.00µm)	78.7µin (2.00µm)
Insulation Material	Thermoplastic, Glass Filled	Thermoplastic, Glass Filled
Material Flammability Rating	UL94 V-0	UL94 V-0
Contact Material	Phosphor Bronze	Phosphor Bronze
Insulation Color	Blue	Blue
Insulation Height	0.335" (8.51mm)	0.335" (8.51mm)
Contact Length - Post	0.122" (3.10mm)	0.122" (3.10mm)
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)
RoHS Status	RoHS non-compliant	RoHS Compliant
Packaging	Not specified	Tube
Inventory Status	890 Pcs New Original In Stock	748 Pcs New Original In Stock

Engineering Selection Recommendations

The 71920-405LF serves as the direct active substitute for the obsolete 71920-405. Both connectors are mechanically and electrically interchangeable for board-to-board applications requiring 5-position 0.100" pitch receptacle connectors with through-hole solder termination.

The 71920-405LF offers the advantage of active product status, ensuring continued availability and manufacturing support. The contact finish change from tin-lead to tin reflects current RoHS compliance requirements. The 71920-405LF is RoHS Compliant, whereas the original 71920-405 is RoHS non-compliant. This distinction is significant for applications subject to RoHS regulations.

Both parts maintain identical mechanical dimensions, electrical interface specifications, and safety certifications (UL94 V-0). The contact finish thickness remains constant at 78.7µin (2.00µm) on both mating and post surfaces, ensuring equivalent electrical performance and reliability characteristics.

Frequently Asked Questions (FAQ)

Q: Are the 71920-405 and 71920-405LF mechanically interchangeable?

A: Yes. Both connectors share identical mechanical specifications including pitch (0.100"), number of positions (5), insulation height (0.335"), contact length (0.122"), and mounting type (through-hole). They are direct mechanical substitutes.

Q: What is the difference between the contact finishes?

A: The 71920-405 uses tin-lead finish on both mating and post contacts, while the 71920-405LF uses tin finish. Both maintain the same finish thickness of 78.7µin (2.00µm). The tin finish on the 71920-405LF reflects RoHS compliance requirements.

Q: Why is the 71920-405 listed as obsolete?

A: The 71920-405 is obsolete due to the industry transition toward RoHS-compliant components. The 71920-405LF represents the active replacement that meets current regulatory requirements while maintaining full electrical and mechanical compatibility.

Q: Can I use the 71920-405LF in applications originally designed for the 71920-405?

A: Yes. The 71920-405LF is a direct substitute for the 71920-405 in all board-to-board connector applications. The mechanical interface, electrical characteristics, and safety ratings are identical.

Q: What is the packaging difference?

A: The 71920-405LF is supplied in tube packaging, while the original 71920-405 packaging specification is not provided. This affects handling and storage but does not impact electrical or mechanical performance.

Q: Are both parts suitable for automotive, industrial, and telecommunications applications?

A: Yes. Both the 71920-405 and 71920-405LF are specified for automotive, general purpose, industrial, and telecommunications applications.

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