Amphenol ICC 76350-103-72LF Rectangular Connector: Equivalent & Substitute Parts

Part Overview

The Amphenol ICC 76350-103-72LF is a through-hole, right-angle rectangular connector header with 72 positions at 0.100" (2.54mm) pitch, designed for board-to-board applications. This connector features a 2-row configuration with male pins, gold-plated mating contacts, and phosphor bronze contact material. The product is currently obsolete, making equivalent substitute parts necessary for ongoing design support, maintenance, and production continuity.

Key Parameters

Parameter	Value
Manufacturer Part Number	76350-103-72LF
Manufacturer	Amphenol ICC (FCI)
Series	BERGSTIK®
Product Status	Obsolete
Connector Type	Header
Contact Type	Male Pin
Number of Positions	72
Number of Rows	2
Pitch - Mating	0.100" (2.54mm)
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
Insulation Color	Black
Material Flammability Rating	UL94 V-0
RoHS Status	RoHS Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution for the 76350-103-72LF is determined by strict adherence to the following critical parameters:

Core Compatibility Parameters:

Number of Positions: 72
Number of Rows: 2
Pitch - Mating: 0.100" (2.54mm)
Row Spacing - Mating: 0.100" (2.54mm)
Connector Type: Header
Contact Type: Male Pin
Mounting Type: Through Hole, Right Angle
Termination: Solder
Fastening Type: Push-Pull
Insulation Color: Black
Material Flammability Rating: UL94 V-0

All substitute parts listed maintain these core parameters. Variations in contact finish, contact material, insulation material composition, and operating temperature ranges are secondary considerations that do not prevent functional substitution when the primary parameters align.

Parameter Comparison

Parameter	76350-103-72LF (Amphenol ICC)	61307221021 (Würth Elektronik)	802-80-072-20-001101 (Preci-Dip)	802-V3-072-20-001101 (Preci-Dip)	892-70-072-20-002101 (Preci-Dip)	892-80-072-20-002101 (Preci-Dip)	TSW-136-08-G-D-RA (Samtec)	TSW-136-08-L-D-RA (Samtec)	TSW-136-08-S-D-RA (Samtec)	TSW-136-08-T-D-RA (Samtec)
Number of Positions	72	72	72	72	72	72	72	72	72	72
Number of Rows	2	2	2	2	2	2	2	2	2	2
Pitch - Mating	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)
Row Spacing - Mating	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	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	Through Hole, Right Angle	Through Hole, Right Angle	Through Hole, Right Angle	Through Hole, Right Angle	Through Hole, Right Angle	Through Hole, Right Angle
Connector Type	Header	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	Male Pin
Termination	Solder	Solder	Solder	Solder	Solder	Solder	Solder	Solder	Solder	Solder
Fastening Type	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull
Contact Shape	Square	Square	Circular	Circular	Square	Square	Square	Square	Square	Square
Contact Finish - Mating	Gold, GXT™	Gold	Tin	Gold	Gold	Tin	Gold	Gold	Gold	Tin
Contact Material	Phosphor Bronze	Copper Alloy	Brass	Brass	Brass	Brass	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze
Insulation Material	Thermoplastic	Polyamide (PA6T), Nylon 6T	Polycyclohexylenedimethylene Terephthalate (PCT), Polyester, Glass Filled	Polycyclohexylenedimethylene Terephthalate (PCT), Polyester, Glass Filled	Polyamide (PA), Nylon, Glass Filled	Polyamide (PA), Nylon, Glass Filled	Polybutylene Terephthalate (PBT)	Polybutylene Terephthalate (PBT)	Polybutylene Terephthalate (PBT)	Polybutylene Terephthalate (PBT)
Insulation Color	Black	Black	Black	Black	Black	Black	Black	Black	Black	Black
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	UL94 V-0
RoHS Status	RoHS Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	Not Applicable	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

All listed substitute parts maintain functional compatibility with the 76350-103-72LF based on core mechanical and electrical parameters. Selection among substitutes should be based on the following criteria:

Active Product Status: The Würth Elektronik 61307221021, all Preci-Dip variants (802 and 892 series), and all Samtec TSW-136 variants are active products with current manufacturing support, ensuring long-term availability and supply chain continuity.

Compliance Certifications: All substitute parts carry ROHS3 compliance, meeting current regulatory requirements. The original 76350-103-72LF carries RoHS Compliant status. All parts maintain UL94 V-0 flammability rating.

Contact Finish Considerations: Gold-plated mating contacts are available across multiple manufacturers (Würth Elektronik 61307221021, Preci-Dip 802-V3-072-20-001101, Preci-Dip 892-70-072-20-002101, and Samtec TSW-136-08-G-D-RA, TSW-136-08-L-D-RA, TSW-136-08-S-D-RA). Tin-plated alternatives are available from Preci-Dip (802-80-072-20-001101, 892-80-072-20-002101) and Samtec (TSW-136-08-T-D-RA).

Contact Material Variations: Phosphor bronze contact material, matching the original part, is available in Samtec TSW-136 series. Copper alloy and brass alternatives are available from Würth Elektronik and Preci-Dip respectively, with equivalent electrical performance for standard applications.

Operating Temperature Range: Extended temperature operation (-55°C to 125°C) is supported by Preci-Dip and Samtec variants. Würth Elektronik 61307221021 operates -40°C to 105°C. Samtec TSW-136-08-T-D-RA operates -55°C to 105°C.

Frequently Asked Questions (FAQ)

Q: Can I directly replace the 76350-103-72LF with any of these substitute parts?

A: Yes, all listed parts are functionally compatible based on core parameters: 72 positions, 2 rows, 0.100" (2.54mm) pitch, through-hole right-angle mounting, solder termination, and push-pull fastening. Physical board layout and mating connector compatibility should be verified for your specific application.

Q: What is the difference between gold-plated and tin-plated contact finishes?

A: Both finishes provide electrical conductivity and corrosion resistance. Gold plating offers superior contact reliability and lower contact resistance, particularly in low-signal applications. Tin plating is cost-effective and suitable for standard power and signal applications. Selection depends on application requirements and cost considerations.

Q: Are the Preci-Dip 802 and 892 series interchangeable?

A: Both series maintain the same 72-position, 2-row, 0.100" pitch configuration and are mechanically compatible. The 892 series features extended mating contact length (0.276" vs. 0.195"), which may affect board-to-board spacing. Verify mechanical clearance in your specific PCB layout.

Q: What is the significance of contact shape differences (square vs. circular)?

A: Contact shape does not affect electrical performance or mating compatibility. Square contacts (76350-103-72LF, Würth Elektronik, Preci-Dip 892 series, Samtec TSW-136) and circular contacts (Preci-Dip 802 series) both provide reliable electrical connection. Selection is based on manufacturing preference and cost.

Q: Does the insulation material affect compatibility?

A: Insulation material variations (thermoplastic, polyamide, polyester, polybutylene terephthalate) do not affect electrical or mechanical compatibility. All materials meet UL94 V-0 flammability requirements. Selection is based on operating temperature range and environmental exposure requirements.

Q: Why is the original 76350-103-72LF obsolete?

A: Product obsolescence reflects manufacturer discontinuation decisions. Active substitute parts from Würth Elektronik, Preci-Dip, and Samtec provide equivalent functionality with current manufacturing support and supply chain availability.

Q: Are all substitute parts RoHS compliant?

A: Yes, all listed substitute parts carry ROHS3 compliance. The original 76350-103-72LF carries RoHS Compliant status. All parts meet current regulatory requirements for hazardous substance restrictions.

Q: What inventory levels are available for these substitute parts?

A: Current inventory ranges from 668 to 1146 pieces across substitute options, providing adequate supply for production and maintenance requirements. Würth Elektronik 61307221021 offers 1041 pieces, Samtec TSW-136-08-T-D-RA offers 1146 pieces, and Preci-Dip variants range from 668 to 1076 pieces.

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