Amphenol ICC 78548-140 Equivalent & Substitute Parts

Part Overview

The Amphenol ICC 78548-140 is a rectangular connector header featuring 40 positions arranged in 2 rows with 0.100" (2.54mm) pitch spacing. This through-hole mounted connector is part of the BERGSTIK® II series and is designed for board-to-board applications. The part is currently active in production. Substitute parts are necessary when the original part becomes unavailable, when alternative compliance certifications are required, or when design specifications allow for compatible alternatives from different manufacturers.

Substiute Parts

78548-140

Amphenol ICC (FCI)In Stock: 77578548-140 Datasheet

Current PartRFQ

4-102973-0-20

TE Connectivity AMP ConnectorsIn Stock: 12064-102973-0-20 Datasheet

MFR RecommendedRFQ

TSW-120-14-G-D

Samtec Inc.In Stock: 1107TSW-120-14-G-D Datasheet

MFR RecommendedRFQ

TSW-120-14-L-D

Samtec Inc.In Stock: 1208TSW-120-14-L-D Datasheet

MFR RecommendedRFQ

TSW-120-14-S-D

Samtec Inc.In Stock: 1099TSW-120-14-S-D Datasheet

MFR RecommendedRFQ

TSW-120-14-T-D

Samtec Inc.In Stock: 1007TSW-120-14-T-D Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the Amphenol ICC 78548-140 is determined by strict adherence to the following core parameters:

Critical Matching Parameters:

• Number of Positions: 40
• 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
• Fastening Type: Push-Pull
• Contact Shape: Square
• Material Flammability Rating: UL94 V-0
• Insulation Color: Black
• Moisture Sensitivity Level: 1 (Unlimited)

The substitute parts listed below meet all critical matching parameters. Variations in contact finish, contact material composition, insulation material, and operating temperature ranges are permitted within the scope of this substitution group, provided the core mechanical and electrical interface specifications remain identical.

Parameter Comparison

Engineering Selection Recommendations

Active Production Parts: The Samtec TSW series (TSW-120-14-G-D, TSW-120-14-L-D, TSW-120-14-S-D, TSW-120-14-T-D) are all currently active in production and offer ROHS3 compliance, providing advantages for new designs and long-term availability. The Amphenol ICC 78548-140 remains active and is suitable for applications without RoHS compliance requirements.

Obsolete Part Consideration: The TE Connectivity 4-102973-0-20 is marked as obsolete and should be avoided for new designs unless legacy system compatibility is a specific requirement.

Compliance Considerations: Applications requiring RoHS3 compliance should select from the Samtec TSW series. Applications with no RoHS compliance requirement may use the Amphenol ICC 78548-140 or TE Connectivity 4-102973-0-20.

Temperature Range: The Samtec TSW-120-14-G-D, TSW-120-14-L-D, and TSW-120-14-S-D support -55°C to 125°C operating temperature. The Amphenol ICC 78548-140 and Samtec TSW-120-14-T-D support -55°C to 105°C (or -65°C to 105°C for the TE part). Select based on application thermal requirements.

Contact Finish Variations: The Samtec TSW-120-14-T-D features tin mating contact finish, while other variants feature gold mating contact finish. Contact finish selection should align with application requirements for corrosion resistance and signal integrity.

Frequently Asked Questions (FAQ)

Q: Can I substitute the Amphenol ICC 78548-140 with any of the listed parts?

A: Yes, all listed parts meet the critical mechanical and electrical interface specifications. Substitution is valid provided your application does not have specific requirements for contact finish, operating temperature range, or RoHS compliance that would exclude a particular alternative.

Q: What is the difference between the Samtec TSW variants?

A: The Samtec TSW-120-14 series variants differ primarily in contact finish specifications. TSW-120-14-G-D features gold mating and post finish; TSW-120-14-L-D features gold mating and tin post finish; TSW-120-14-S-D features gold mating (30.0µin thickness) and tin post finish; TSW-120-14-T-D features tin mating and post finish. All variants maintain identical mechanical dimensions and pitch specifications.

Q: Is the TE Connectivity 4-102973-0-20 suitable for new designs?

A: The TE Connectivity 4-102973-0-20 is marked as obsolete. While it meets the mechanical and electrical interface requirements, it is not recommended for new designs due to potential long-term availability constraints. Active production alternatives from Samtec or the current Amphenol ICC part are preferred.

Q: What are the key parameters that must match for substitution?

A: The following parameters must match exactly: 40 positions, 2 rows, 0.100" (2.54mm) pitch, 0.100" (2.54mm) row spacing, through-hole mounting, push-pull fastening, square contact shape, UL94 V-0 flammability rating, black insulation color, and MSL 1 rating.

Q: Does RoHS compliance affect substitution eligibility?

A: RoHS compliance does not affect mechanical or electrical substitution eligibility. However, if your application or regulatory environment requires RoHS3 compliance, you must select from the Samtec TSW series. The Amphenol ICC 78548-140 and TE Connectivity 4-102973-0-20 are RoHS non-compliant.

Q: Are there any differences in contact length specifications?

A: Minor variations exist in contact length specifications across the substitute parts. The Amphenol ICC 78548-140 specifies overall contact length of 0.538" (13.67mm), while Samtec TSW variants specify 0.530" (13.46mm), and TE Connectivity specifies 0.533" (14.65mm). These variations are within acceptable tolerances for standard board-to-board applications but should be verified against specific PCB design requirements.