Amphenol ICC 71978-150LF Rectangular Connector: Equivalent & Substitute Parts

Part Overview

The Amphenol ICC 71978-150LF is a through-hole, right-angle rectangular connector header with 50 positions at 2.54mm pitch, designed for board-to-cable/wire applications. This shrouded 4-wall header features press-fit and solder termination with latch lock/eject hooks and gold-plated mating contacts. The part is Active in product status with 683 units in current inventory. Equivalent and substitute parts are identified based on matching electrical and mechanical parameters to ensure functional interchangeability in applications requiring 50-position 2.54mm pitch headers with right-angle through-hole mounting.

Key Parameters

Parameter	71978-150LF Value
Connector Type	Header
Contact Type	Male Pin
Pitch - Mating	0.100" (2.54mm)
Number of Positions	50
Number of Rows	2
Row Spacing - Mating	0.100" (2.54mm)
Mounting Type	Through Hole, Right Angle
Shrouding	Shrouded - 4 Wall
Style	Board to Cable/Wire
Contact Shape	Square
Contact Finish - Mating	Gold, GXT™
Contact Finish - Post	Tin
Insulation Material	Thermoplastic, Glass Filled
Material Flammability Rating	UL94 V-0
RoHS Status	RoHS Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict alignment with the following critical parameters:

Connector Type: Header
Contact Type: Male Pin
Pitch - Mating: 0.100" (2.54mm)
Number of Positions: 50
Number of Rows: 2
Row Spacing - Mating: 0.100" (2.54mm)
Mounting Type: Through Hole, Right Angle
Shrouding: Shrouded - 4 Wall
Contact Shape: Square
Contact Finish - Mating: Gold
Contact Finish - Post: Tin
Material Flammability Rating: UL94 V-0
Moisture Sensitivity Level (MSL): 1 (Unlimited)

All identified substitute parts meet these core electrical and mechanical parameters. Variations in contact length, insulation material composition, fastening hook length, and operating temperature ranges are secondary parameters that do not prevent functional substitution when application requirements permit.

Parameter Comparison

Parameter	71978-150LF (Amphenol ICC)	09185506901 (HARTING)	09185506903 (HARTING)	09185506913 (HARTING)	09185507913 (HARTING)	N3433-5202RB (3M)	N3433-5302RB (3M)	N3433-5303RB (3M)
Manufacturer	Amphenol ICC	HARTING	HARTING	HARTING	HARTING	3M	3M	3M
Connector Type	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
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)
Number of Positions	50	50	50	50	50	50	50	50
Number of Rows	2	2	2	2	2	2	2	2
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)
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
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
Contact Shape	Square	Square	Square	Square	Square	Square	Square	Square
Contact Finish - Mating	Gold, GXT™	Gold	Gold	Gold	Gold	Gold	Gold	Gold
Contact Finish - Post	Tin	Tin	Tin	Tin	Tin	Tin	Tin	Tin
Contact Length - Mating	0.228" (5.80mm)	0.240" (6.10mm)	0.240" (6.10mm)	0.240" (6.10mm)	0.240" (6.10mm)	0.240" (6.10mm)	0.240" (6.10mm)	0.240" (6.10mm)
Contact Length - Post	0.114" (2.90mm)	0.177" (4.50mm)	0.114" (2.90mm)	0.114" (2.90mm)	0.114" (2.90mm)	0.112" (2.84mm)	0.112" (2.84mm)	0.155" (3.94mm)
Insulation Height	0.339" (8.61mm)	0.335" (8.51mm)	0.335" (8.51mm)	0.335" (8.51mm)	0.335" (8.51mm)	0.340" (8.64mm)	0.340" (8.64mm)	0.340" (8.64mm)
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
RoHS Status	RoHS Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	RoHS Compliant	RoHS Compliant	RoHS Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Operating Temperature	Not specified	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 105°C	-55°C ~ 105°C	-55°C ~ 105°C
Current Rating (Amps)	Not specified	Not specified	Not specified	Not specified	Not specified	1.75A	1.75A	1.75A
Packaging	Tube	Tray	Tray	Bulk	Tray	Bulk	Bulk	Bulk
Inventory	683 Pcs	1157 Pcs	883 Pcs	1225 Pcs	853 Pcs	1312 Pcs	1655 Pcs	1290 Pcs

Engineering Selection Recommendations

All identified substitute parts maintain Active product status and meet RoHS compliance requirements. The HARTING SEK series (09185506901, 09185506903, 09185506913, 09185507913) achieves ROHS3 compliance and operates across -55°C to 125°C, providing extended temperature range coverage. The 3M 3000 series (N3433-5202RB, N3433-5302RB, N3433-5303RB) maintains RoHS compliance with specified current ratings of 1.75A and operates within -55°C to 105°C.

Contact length variations exist across substitute options. The original 71978-150LF features 0.114" (2.90mm) post length, matched by HARTING parts 09185506903, 09185506913, and 09185507913, and 3M part N3433-5202RB and N3433-5302RB at 0.112" (2.84mm). The 3M N3433-5303RB provides extended post length at 0.155" (3.94mm), while HARTING 09185506901 offers 0.177" (4.50mm) for applications requiring deeper board penetration.

Fastening hook configuration differs between HARTING variants: 09185506901 and 09185506903 feature long hooks, while 09185506913 and 09185507913 provide short hooks. All 3M parts incorporate short hooks. Packaging options span tube, tray, and bulk formats across all parts, accommodating different procurement and assembly workflows.

Frequently Asked Questions (FAQ)

Q: What determines if a part can substitute for the 71978-150LF?

A: Substitution eligibility requires matching core parameters: 50-position, 2-row header configuration at 0.100" (2.54mm) pitch with right-angle through-hole mounting, shrouded 4-wall design, square male pin contacts, gold mating finish, and tin post finish. All identified parts meet these criteria.

Q: How do contact length variations affect compatibility?

A: Contact post length determines board penetration depth. The original 71978-150LF and most substitutes use 0.112" to 0.114" post length, suitable for standard PCB thickness. The 3M N3433-5303RB at 0.155" (3.94mm) and HARTING 09185506901 at 0.177" (4.50mm) provide deeper penetration for thicker boards or applications requiring extended solder joint length. Mating contact length variations (0.228" to 0.240") are within acceptable tolerance for standard connector receptacles.

Q: Do operating temperature ranges affect substitution?

A: The original 71978-150LF does not specify operating temperature. HARTING substitutes operate -55°C to 125°C, while 3M substitutes operate -55°C to 105°C. Selection depends on application temperature requirements. HARTING parts provide extended high-temperature capability.

Q: What is the difference between fastening hook configurations?

A: HARTING offers long hooks (09185506901, 09185506903) and short hooks (09185506913, 09185507913). Hook length affects mating force and connector retention. Short hooks reduce insertion force, while long hooks provide enhanced mechanical retention. Selection depends on application requirements for ease of assembly versus connection security.

Q: Are there packaging considerations for production?

A: The original 71978-150LF ships in tube packaging. Substitutes are available in tray or bulk formats. Tube packaging suits lower-volume or manual assembly operations. Tray and bulk packaging accommodate automated pick-and-place assembly. Packaging selection does not affect electrical or mechanical performance.

Q: How do insulation material differences impact performance?

A: The original uses thermoplastic glass-filled insulation. HARTING substitutes use polybutylene terephthalate (PBT) glass-filled material. 3M substitutes use polycyclohexylenedimethylene terephthalate (PCT) polyester glass-filled material. All materials meet UL94 V-0 flammability requirements. Material selection affects mechanical properties and environmental resistance but does not prevent functional substitution in standard applications.

Q: What is the significance of RoHS and ROHS3 compliance?

A: Both RoHS and ROHS3 compliance indicate restriction of hazardous substances. ROHS3 represents the current regulatory standard. All parts meet hazardous substance restrictions. Selection between RoHS and ROHS3 compliant parts depends on regional regulatory requirements and customer specifications.

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