Amphenol ICC 78548-508 Equivalent & Substitute Parts

Part Overview

The Amphenol ICC 78548-508 is a rectangular connector header for through-hole mounting, featuring 8 positions arranged in 2 rows with 0.100" (2.54mm) pitch spacing. This BERGSTIK® II series component is designed for board-to-board connections using kinked pin solder termination with push-pull fastening. The part is currently active in production with 1041 units in stock.

Substitute parts are necessary when the original manufacturer part becomes unavailable, when alternative compliance certifications are required, or when specific contact finish or post length specifications must be adjusted for application requirements.

Key Parameters

Parameter	Value
Connector Type	Header
Contact Type	Male Pin
Number of Positions	8
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
Shrouding	Unshrouded
Contact Shape	Square
Insulation Height	0.100" (2.54mm)
Material Flammability Rating	UL94 V-0
Insulation Color	Black

Substitute Part Grouping Explanation

Substitution eligibility for the 78548-508 is determined by strict equivalence across the following critical parameters:

Core Electrical & Mechanical Compatibility:

Connector type: Header
Contact type: Male pin
Number of positions: 8
Number of rows: 2
Pitch spacing: 0.100" (2.54mm) mating and row spacing
Mounting type: Through hole
Fastening type: Push-pull
Shrouding: Unshrouded
Contact shape: Square
Insulation height: 0.100" (2.54mm)
Material flammability: UL94 V-0
Insulation color: Black

Variable Parameters Allowing Substitution:

Contact finish (mating): Gold, Tin-Lead, or Tin
Contact material: Phosphor Bronze or Copper Alloy
Contact length (post): 0.110" to 0.410" depending on application
Overall contact length: Varies with post length
Insulation material: PBT or Polyamide
Operating temperature range: -40°C to 125°C
Current rating: 2.5A to 3A per contact
RoHS compliance status: Compliant or non-compliant
REACH status: Affected or unaffected

All substitute parts listed maintain full compatibility with the 78548-508 across core parameters while offering alternatives in finish, material composition, and compliance certifications.

Parameter Comparison

Part Number	Manufacturer	Series	Contact Finish - Mating	Contact Material	Contact Length - Post	Overall Contact Length	Operating Temperature	Current Rating	RoHS Status	Product Status	Inventory
78548-508	Amphenol ICC	BERGSTIK® II	Gold or Gold, GXT™	Phosphor Bronze	0.120" (3.05mm)	0.538" (13.67mm)	Not specified	Not specified	RoHS non-compliant	Active	1041 Pcs
929710-01-04	3M	929	Tin-Lead	Copper Alloy	0.110" (2.79mm)	0.528" (13.42mm)	-40°C ~ 105°C	2.5A	RoHS non-compliant	Active	1532 Pcs
929710-03-04	3M	929	Tin-Lead	Copper Alloy	0.410" (10.41mm)	0.828" (21.03mm)	-40°C ~ 105°C	2.5A	RoHS non-compliant	Discontinued at DiGi Electronics	1156 Pcs
929715-01-04-I	3M	929	Gold	Copper Alloy	0.110" (2.79mm)	0.528" (13.42mm)	-40°C ~ 105°C	2.5A	RoHS Compliant	Active	1461 Pcs
929715-03-04-I	3M	929	Gold	Copper Alloy	0.410" (10.41mm)	0.828" (21.03mm)	-40°C ~ 105°C	2.5A	RoHS Compliant	Active	1325 Pcs
929715-10-04-I	3M	929	Gold	Copper Alloy	0.175" (4.45mm)	0.593" (15.07mm)	-40°C ~ 105°C	2.5A	RoHS Compliant	Active	1346 Pcs
M20-9970445	Harwin Inc.	M20	Gold	Brass	0.116" (2.95mm)	0.551" (14.00mm)	-40°C ~ 105°C	3A per Contact	ROHS3 Compliant	Active	6291 Pcs
TSW-104-14-G-D	Samtec Inc.	TSW	Gold	Phosphor Bronze	0.110" (2.79mm)	0.530" (13.46mm)	-55°C ~ 125°C	Not specified	ROHS3 Compliant	Active	1271 Pcs
TSW-104-14-L-D	Samtec Inc.	TSW	Gold	Phosphor Bronze	0.110" (2.79mm)	0.530" (13.46mm)	-55°C ~ 125°C	Not specified	ROHS3 Compliant	Active	1743 Pcs
TSW-104-14-S-D	Samtec Inc.	TSW	Gold	Phosphor Bronze	0.110" (2.79mm)	0.530" (13.46mm)	-55°C ~ 125°C	Not specified	ROHS3 Compliant	Active	1497 Pcs
TSW-104-14-T-D	Samtec Inc.	TSW	Tin	Phosphor Bronze	0.110" (2.79mm)	0.530" (13.46mm)	-55°C ~ 105°C	Not specified	ROHS3 Compliant	Active	1182 Pcs

Engineering Selection Recommendations

For RoHS Compliance Requirements: Select 929715-01-04-I, 929715-03-04-I, 929715-10-04-I, M20-9970445, or any TSW-104-14 variant. These parts carry RoHS Compliant or ROHS3 Compliant certification, whereas the original 78548-508 is RoHS non-compliant.

For Extended Operating Temperature Range: TSW-104 series parts from Samtec (TSW-104-14-G-D, TSW-104-14-L-D, TSW-104-14-S-D, TSW-104-14-T-D) operate from -55°C to 125°C, exceeding the -40°C to 105°C range of 3M 929 series alternatives.

For Phosphor Bronze Contact Material: The original 78548-508 uses phosphor bronze contacts. TSW-104-14 series parts maintain this material specification. 3M 929 series and Harwin M20-9970445 use copper alloy or brass alternatives.

For Gold Contact Finish: 929715 series (3M), M20-9970445 (Harwin), and TSW-104-14-G-D, TSW-104-14-L-D, TSW-104-14-S-D (Samtec) provide gold mating contact finish. 929710 series uses tin-lead finish. TSW-104-14-T-D uses tin finish.

For Post Length Variations: 929710-01-04 and 929715-01-04-I: 0.110" post length 929710-03-04 and 929715-03-04-I: 0.410" post length (extended) 929715-10-04-I: 0.175" post length (intermediate) M20-9970445: 0.116" post length TSW-104-14 series: 0.110" post length

For Active Product Status: All substitute parts except 929710-03-04 (discontinued at DiGi Electronics) maintain active product status with current manufacturing availability.

Frequently Asked Questions (FAQ)

Q: Can I substitute the 78548-508 with any of the listed parts without design modification?

A: Yes, all listed parts maintain full compatibility across core connector specifications: 8-position, 2-row header with 0.100" pitch, through-hole mounting, push-pull fastening, and unshrouded design. However, post length variations may affect PCB stack-up height. Verify post length requirements for your application.

Q: What is the difference between the 3M 929710 and 929715 series?

A: The 929710 series uses tin-lead contact finish and is RoHS non-compliant. The 929715 series uses gold contact finish and is RoHS Compliant. Both share identical pitch, position count, and core mechanical specifications. Contact finish selection depends on solderability requirements and compliance mandates.

Q: Why do some parts have longer post lengths (929710-03-04, 929715-03-04-I)?

A: Extended post lengths (0.410") accommodate applications requiring greater standoff distance from the PCB surface. Standard post lengths (0.110") are suitable for direct board-to-board mounting. Select post length based on your specific PCB stack-up and clearance requirements.

Q: Are the Samtec TSW-104-14 variants interchangeable with each other?

A: TSW-104-14-G-D, TSW-104-14-L-D, and TSW-104-14-S-D are mechanically and electrically identical, differing only in post contact finish (gold, tin, or gold with tin post respectively). TSW-104-14-T-D uses tin mating finish instead of gold. Select based on your soldering process and contact finish requirements.

Q: What compliance certifications should I verify for my application?

A: All parts carry UL94 V-0 flammability rating and EAR99 export classification. For RoHS compliance, select 929715 series, M20-9970445, or TSW-104 series. For REACH compliance, verify specific part requirements: 3M 929710 and 929715 series carry REACH Affected or REACH Unaffected designations; Harwin M20-9970445 and Samtec TSW-104 series are REACH Unaffected.

Q: Can I use the Harwin M20-9970445 as a direct replacement?

A: Yes. The M20-9970445 maintains all core specifications and offers higher current rating (3A per contact versus 2.5A for 3M alternatives). It uses brass contacts instead of phosphor bronze or copper alloy, and carries ROHS3 Compliant and REACH Unaffected certifications. Verify brass contact compatibility with your application requirements.

Q: What is the difference between contact finish thickness specifications?

A: Contact finish thickness affects durability and wear resistance. The 78548-508 specifies 15.0µin (0.38µm) gold thickness. 3M 929715 series provides 10.0µin (0.25µm) gold thickness. Samtec TSW-104-14-G-D and TSW-104-14-L-D provide 10.0µin (0.25µm) gold mating finish. TSW-104-14-S-D provides 30.0µin (0.76µm) gold mating finish. Thicker finishes provide extended contact life in high-cycle applications.

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