Amphenol ICC 76345-803-20 Rectangular Connector Header - Equivalent & Substitute Parts

Part Overview

The Amphenol ICC 76345-803-20 is a through-hole, right-angle rectangular connector header with 20 positions at 0.100" (2.54mm) pitch, designed for board-to-board applications. This component is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing production support and design continuity. Substitute parts must maintain electrical and mechanical compatibility across the same pitch, position count, and mounting configuration.

Key Parameters

Parameter	Value
Connector Type	Header
Contact Type	Male Pin
Pitch - Mating	0.100" (2.54mm)
Number of Positions	20
Number of Rows	2
Row Spacing - Mating	0.100" (2.54mm)
Mounting Type	Through Hole, Right Angle
Termination	Solder
Fastening Type	Push-Pull
Contact Finish - Mating	Gold, GXT™
Contact Material	Phosphor Bronze
Insulation Material	Thermoplastic
Material Flammability Rating	UL94 V-0
Insulation Color	Black

Substitute Part Grouping Explanation

Substitution eligibility for the 76345-803-20 is determined by strict adherence to the following parameters:

Connector pitch of 0.100" (2.54mm)
20-position configuration with 2-row layout
Row spacing of 0.100" (2.54mm)
Through-hole, right-angle mounting
Solder termination
Push-pull fastening mechanism
Male pin contact type
UL94 V-0 flammability rating

The three identified substitute parts meet these core electrical and mechanical requirements. Variations in contact finish thickness, insulation material composition, and product status (active vs. obsolete) do not preclude functional substitution when the above parameters align.

Parameter Comparison

Parameter	76345-803-20 (Main)	76345-803-20LF	2320-5221-TG	PS-20PE-D4LT1-PN1
Manufacturer	Amphenol ICC (FCI)	Amphenol ICC (FCI)	3M	JAE Electronics
Product Status	Obsolete	Active	Active	Active
Connector Type	Header	Header	Header	Header
Contact Type	Male Pin	Male Pin	Male Pin	Male Pin
Pitch - Mating	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)
Number of Positions	20	20	20	20
Number of Rows	2	2	2	2
Row Spacing - Mating	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)
Mounting Type	Through Hole, Right Angle	Through Hole, Right Angle	Through Hole, Right Angle	Through Hole, Right Angle
Termination	Solder	Solder	Solder	Solder
Fastening Type	Push-Pull	Push-Pull	Push-Pull	Push-Pull
Contact Length - Mating	0.318" (8.08mm)	0.318" (8.08mm)	0.318" (8.08mm)	0.236" (6.00mm)
Contact Length - Post	0.115" (2.92mm)	0.115" (2.92mm)	0.110" (2.79mm)	0.110" (2.79mm)
Insulation Height	0.248" (6.30mm)	0.248" (6.30mm)	0.242" (6.14mm)	0.260" (6.60mm)
Contact Shape	Square	Square	Square	Square
Contact Finish - Mating	Gold, GXT™	Gold, GXT™	Gold	Gold
Contact Material	Phosphor Bronze	Phosphor Bronze	Copper Alloy	Copper Alloy
Insulation Material	Thermoplastic	Thermoplastic	Thermoplastic, Glass Filled	Polybutylene Terephthalate (PBT)
Material Flammability Rating	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0
Insulation Color	Black	Black	Black	Black
RoHS Status	RoHS non-compliant	RoHS Compliant	RoHS non-compliant	RoHS Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

76345-803-20LF (Amphenol ICC) is the primary substitute. This part is manufactured by the same supplier as the main component, maintains identical electrical and mechanical specifications, and carries active product status. The primary distinction is RoHS compliance; the 76345-803-20LF meets RoHS requirements while the original does not. This part is suitable for direct replacement in new designs and legacy system support.

2320-5221-TG (3M) is an alternative substitute from a different manufacturer. This part meets all core substitution criteria and carries active product status. The 3M connector features a glass-filled thermoplastic insulation material and specifies an operating temperature range of -55°C to 105°C with a current rating of 3A. Contact finish thickness on the post differs (100.0µin vs. unspecified on the main part). This part is suitable when supply chain diversification is required.

PS-20PE-D4LT1-PN1 (JAE Electronics) is a secondary alternative. This part maintains all critical pitch, position, and mounting parameters. The contact length for mating is reduced to 0.236" (6.00mm) compared to 0.318" (8.08mm) on the main part, and insulation height is increased to 0.260" (6.60mm). The insulation material is polybutylene terephthalate (PBT) rather than thermoplastic. This part carries RoHS compliance and active product status. Physical envelope differences require verification against PCB layout constraints before selection.

Frequently Asked Questions (FAQ)

Q: Can the 76345-803-20LF be used as a direct replacement for the obsolete 76345-803-20?

A: Yes. The 76345-803-20LF maintains identical pitch (0.100"), position count (20), row configuration (2), mounting type (through-hole right-angle), and contact specifications. The primary difference is RoHS compliance status. Electrical and mechanical compatibility is confirmed.

Q: What is the significance of the contact length difference in the PS-20PE-D4LT1-PN1?

A: The PS-20PE-D4LT1-PN1 has a mating contact length of 0.236" (6.00mm) versus 0.318" (8.08mm) on the main part. This 0.082" reduction may affect mating depth and connector engagement characteristics. PCB layout and mating connector specifications must be reviewed to confirm compatibility.

Q: Are there differences in insulation material between the substitutes?

A: Yes. The main part and 76345-803-20LF use thermoplastic insulation. The 2320-5221-TG uses glass-filled thermoplastic, and the PS-20PE-D4LT1-PN1 uses polybutylene terephthalate (PBT). All materials meet UL94 V-0 flammability requirements. Material selection may affect mechanical properties and environmental resistance.

Q: Which substitute is recommended for new designs?

A: Selection depends on supply chain requirements and compliance mandates. The 76345-803-20LF is recommended for designs requiring RoHS compliance and maximum compatibility with the original specification. The 2320-5221-TG and PS-20PE-D4LT1-PN1 are suitable alternatives when supply diversification or specific material properties are required.

Q: Do all substitutes support the same current and voltage ratings?

A: The main part and 76345-803-20LF do not specify current or voltage ratings. The 2320-5221-TG specifies 3A current rating and does not specify voltage. The PS-20PE-D4LT1-PN1 does not specify current or voltage ratings. Application-specific electrical requirements must be verified against actual connector datasheets.

Q: What is the packaging difference between the main part and substitutes?

A: The main part packaging is unspecified. The 76345-803-20LF and PS-20PE-D4LT1-PN1 are supplied in bulk packaging. The 2320-5221-TG packaging is unspecified. Packaging format does not affect electrical or mechanical compatibility.

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