Equivalent & Substitute Parts for 78286-434HLF

Part Overview

The Amphenol ICC 78286-434HLF is a rectangular connector header with 34 positions at 2.54mm pitch, designed for through-hole board-to-board applications. This BERGSTIK® II series connector features unshrouded male pins with solder termination and push-pull fastening. The part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement.

Key Parameters

Parameter	Value
Connector Type	Header
Contact Type	Male Pin
Number of Positions	34
Number of Rows	2
Pitch - Mating	0.100" (2.54mm)
Row Spacing - Mating	0.100" (2.54mm)
Mounting Type	Through Hole
Termination	Solder
Fastening Type	Push-Pull
Style	Board to Board
Shrouding	Unshrouded
Material Flammability Rating	UL94 V-0
Insulation Color	Black
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution for the 78286-434HLF is determined by strict alignment of core electrical and mechanical parameters: 34-position configuration, 2.54mm mating pitch, 2-row layout with 0.100" row spacing, male pin contact type, through-hole solder termination, and push-pull fastening. All substitute parts maintain these critical parameters to ensure mechanical and electrical compatibility in board-to-board applications.

The substitute parts are grouped into two categories based on product status and design features:

Active Status Substitutes (TE Connectivity AMPMODU Mod II Series): Parts 1-87215-7, 6-146252-7, and 6-146253-7 are active production items from TE Connectivity. These maintain the core 34-position, 2.54mm pitch configuration with push-pull fastening. Variations exist in contact finish (gold vs. tin), contact shape (circular vs. square), and insulation material (thermoplastic vs. LCP), but all preserve functional compatibility.

Active Status Substitutes (Harwin M20 Series): Parts M20-9761746 and M20-9981746 are cuttable header variants from Harwin with active product status. These maintain the 34-position, 2.54mm pitch, 2-row configuration with tin finish and square contact shape. The cuttable design allows field customization of position count.

Active Status Substitute (Samtec Flex Stack): Part EW-17-09-L-D-200 is a spacer connector variant with 34 positions at 2.54mm pitch and through-hole solder termination, offering alternative stack height geometry for specific PCB layout requirements.

Parameter Comparison

Parameter	78286-434HLF (Main)	1-87215-7	6-146252-7	6-146253-7	M20-9761746	M20-9981746	EW-17-09-L-D-200
Manufacturer	Amphenol ICC	TE Connectivity	TE Connectivity	TE Connectivity	Harwin	Harwin	Samtec
Product Status	Obsolete	Active	Active	Active	Active	Active	Active
Number of Positions	34	34	34	34	34	34	34
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)
Number of Rows	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)
Contact Type	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Termination	Solder	Solder	Solder	Solder	Solder	Solder	Solder
Fastening Type	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	N/A
Shrouding	Unshrouded	Unshrouded	Unshrouded	Unshrouded	Unshrouded	Unshrouded	Unshrouded
Contact Shape	Square	Circular	Square	Square	Square	Square	N/A
Contact Finish - Mating	Tin	Gold	Gold	Gold	Tin	Tin	Gold
Contact Material	Phosphor Bronze	Phosphor Bronze	Copper Alloy	Copper Alloy	Brass	Brass	N/A
Insulation Material	Not Specified	Thermoplastic	Liquid Crystal Polymer (LCP)	Liquid Crystal Polymer (LCP)	Polyamide (PA6T), Nylon 6T	Polyamide (PA6T), Nylon 6T	N/A
Material Flammability Rating	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0
Insulation Color	Black	Black	Black	Black	Black	Black	Black
Operating Temperature	Not Specified	-65°C ~ 105°C	-65°C ~ 105°C	-65°C ~ 105°C	-40°C ~ 105°C	-40°C ~ 105°C	Not Specified
Current Rating	Not Specified	3A	3A	3A	3A per Contact	3A per Contact	Not Specified
RoHS Status	Not Specified	ROHS3 Compliant	RoHS Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	Not Applicable

Engineering Selection Recommendations

All substitute parts listed maintain the core functional parameters required for direct replacement: 34-position configuration, 2.54mm mating pitch, 2-row layout, male pin contacts, through-hole solder termination, and push-pull fastening. Selection among substitutes depends on specific design requirements and compliance mandates.

For RoHS3 and REACH Compliance: Parts 1-87215-7, 6-146253-7, M20-9761746, M20-9981746, and EW-17-09-L-D-200 carry ROHS3 Compliant certification. Part 6-146252-7 carries RoHS Compliant status. Part 1-87215-7 carries REACH Affected status; parts M20-9761746 and M20-9981746 carry REACH Unaffected status.

For Extended Temperature Range: Parts 1-87215-7, 6-146252-7, and 6-146253-7 support -65°C to 105°C operating range. Parts M20-9761746 and M20-9981746 support -40°C to 105°C operating range.

For Gold Contact Finish: Parts 1-87215-7, 6-146252-7, 6-146253-7, and EW-17-09-L-D-200 feature gold mating contact finish. Parts M20-9761746 and M20-9981746 feature tin mating contact finish.

For Cuttable Header Design: Parts M20-9761746 and M20-9981746 offer cuttable header construction, allowing field customization of position count and mated stacking heights (9.94mm, 10.64mm, 11.04mm, 16.54mm).

For Spacer Connector Geometry: Part EW-17-09-L-D-200 provides alternative stack height geometry (0.200" stack height, 0.730" overall pin length) suitable for applications requiring specific PCB spacing.

Frequently Asked Questions (FAQ)

Q: Can I use any of these substitute parts as a direct replacement for the 78286-434HLF?

A: All listed substitute parts maintain the critical parameters for mechanical and electrical compatibility: 34 positions, 2.54mm pitch, 2-row configuration, male pin contacts, through-hole solder termination, and push-pull fastening. Physical board layout compatibility depends on specific contact length, insulation height, and overall connector geometry. Verify contact length and mating depth specifications against your PCB design before final selection.

Q: What are the differences between TE Connectivity AMPMODU Mod II parts (1-87215-7, 6-146252-7, 6-146253-7)?

A: All three maintain the 34-position, 2.54mm pitch core specification. Part 1-87215-7 features circular contact shape and thermoplastic insulation. Parts 6-146252-7 and 6-146253-7 feature square contact shape and LCP insulation. Contact finish differs: 1-87215-7 has 30.0µin gold thickness; 6-146252-7 has 15.0µin gold thickness; 6-146253-7 has 30.0µin gold thickness. Post finish is gold for 1-87215-7 and tin for 6-146252-7 and 6-146253-7.

Q: What is the advantage of Harwin M20 cuttable headers?

A: Harwin M20-9761746 and M20-9981746 offer cuttable header design, allowing field customization of position count without requiring multiple part numbers. Both maintain 34-position capability with tin finish contacts and square contact shape. Mated stacking heights are available at 9.94mm, 10.64mm, 11.04mm, and 16.54mm.

Q: How does the Samtec EW-17-09-L-D-200 differ from standard headers?

A: The Samtec EW-17-09-L-D-200 is a spacer connector variant with 34 positions at 2.54mm pitch. It features a 0.200" stack height and 0.730" overall pin length, providing alternative geometry for applications requiring specific PCB spacing. It does not feature push-pull fastening like standard headers.

Q: Are all substitute parts RoHS compliant?

A: All substitute parts carry RoHS or ROHS3 compliance certification. Part 1-87215-7 carries ROHS3 Compliant status. Part 6-146252-7 carries RoHS Compliant status. Part 6-146253-7 carries ROHS3 Compliant status. Parts M20-9761746 and M20-9981746 carry ROHS3 Compliant status. Part EW-17-09-L-D-200 carries ROHS3 Compliant status.

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

A: Contact finish affects mating force, wear resistance, and corrosion resistance. Tin finish (M20-9761746, M20-9981746) provides cost efficiency and adequate performance in standard environments. Gold finish (1-87215-7, 6-146252-7, 6-146253-7, EW-17-09-L-D-200) provides superior corrosion resistance and lower contact resistance, beneficial in high-reliability or harsh environment applications. Finish thickness varies among parts and affects durability.

Q: What operating temperature ranges are supported?

A: TE Connectivity AMPMODU Mod II parts (1-87215-7, 6-146252-7, 6-146253-7) support -65°C to 105°C. Harwin M20 parts (M20-9761746, M20-9981746) support -40°C to 105°C. Select based on your application's thermal requirements.

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