54101-G08-04LF Equivalent & Substitute Parts

Part Overview

The 54101-G08-04LF is a vertical through-hole rectangular connector header manufactured by Amphenol ICC (FCI) under the BERGSTIK® series. This 4-position, single-row connector with 0.100" (2.54mm) pitch is designed for board-to-board applications using solder termination. The part is currently active in production with 1,081 units in stock. Substitute parts are identified when equivalent electrical and mechanical parameters align with the original specification, enabling component interchangeability in applications where the primary part is unavailable or when design requirements permit alternative manufacturers.

Substiute Parts

54101-G08-04LF

Amphenol ICC (FCI)In Stock: 117754101-G08-04LF Datasheet

Current PartRFQ

5-146281-4

TE Connectivity AMP ConnectorsIn Stock: 8265-146281-4 Datasheet

MFR RecommendedRFQ

TS-104-T-AA

Samtec Inc.In Stock: 5134TS-104-T-AA Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 54101-G08-04LF is determined by strict alignment of the following critical parameters:

• Connector Type & Contact Configuration: Header with male pin contacts
• Position Count & Row Configuration: 4 positions in a single row
• Pitch Specification: 0.100" (2.54mm) mating pitch
• Mounting & Termination: Through-hole solder termination
• Style Classification: Board-to-board or board-to-cable connectivity
• Shrouding: Unshrouded design
• Contact Shape: Square contacts
• Compliance & Environmental: UL94 V-0 flammability rating, RoHS compliance, MSL 1

The identified substitute parts 5-146281-4 (TE Connectivity AMP Connectors) and TS-104-T-AA (Samtec Inc.) meet all critical substitution criteria. Both parts maintain identical pitch, position count, row configuration, mounting type, and termination method. Both are RoHS compliant with MSL 1 rating and UL94 V-0 flammability classification, ensuring functional and environmental equivalence.

Parameter Comparison

Engineering Selection Recommendations

All three parts—54101-G08-04LF, 5-146281-4, and TS-104-T-AA—maintain active production status and meet current regulatory compliance requirements. The 54101-G08-04LF and 5-146281-4 share identical contact length specifications (0.230" mating, 0.120" post) and matching contact finish thickness (30.0µin), providing the closest mechanical alignment. The TS-104-T-AA offers an alternative with tin contact finish and increased contact finish thickness (200.0µin), suitable for applications where tin plating is acceptable.

Selection between these parts should be based on:

• Primary choice: 5-146281-4 when TE Connectivity supply chain preference or AMPMODU Mod II series compatibility is required
• Alternative choice: TS-104-T-AA when Samtec supply availability is prioritized or tin contact finish meets application requirements
• Original specification: 54101-G08-04LF when BERGSTIK® series or Amphenol ICC sourcing is mandated

All parts are RoHS compliant and carry MSL 1 rating, confirming suitability for standard storage and handling conditions without moisture sensitivity constraints.

Frequently Asked Questions (FAQ)

Q: Can 5-146281-4 directly replace 54101-G08-04LF in existing designs?

A: Yes. Both parts share identical pitch (0.100"), position count (4), row configuration (1), mounting type (through-hole), termination method (solder), and contact dimensions (0.230" mating length, 0.120" post length). Contact finish thickness matches at 30.0µin. The 5-146281-4 insulation height is 0.090" versus 0.100" for the original; verify PCB layout clearance if height-critical.

Q: What is the key difference between TS-104-T-AA and the other two parts?

A: The TS-104-T-AA uses tin contact finish with 200.0µin thickness, compared to gold finish at 30.0µin for the other parts. Tin plating provides different electrical and corrosion characteristics. Confirm application compatibility with tin contacts before substitution.

Q: Are all three parts RoHS compliant?

A: Yes. The 54101-G08-04LF and 5-146281-4 are RoHS Compliant. The TS-104-T-AA is ROHS3 Compliant. All meet current RoHS requirements.

Q: What does MSL 1 mean for these connectors?

A: MSL 1 (Moisture Sensitivity Level 1) indicates unlimited shelf life without moisture sensitivity constraints. These parts do not require special drying or baking procedures before soldering and can be stored under standard conditions.

Q: Can the 5-146281-4 be used in cable-to-board applications?

A: The 5-146281-4 is classified as "Board to Board or Cable" style, enabling both board-to-board and cable-to-board configurations. The original 54101-G08-04LF is specified for board-to-board only; verify application requirements before substitution.

Q: What is the difference between the contact materials?

A: The 54101-G08-04LF uses Phosphor Bronze contacts, while the 5-146281-4 uses Copper Alloy. Both materials provide adequate electrical conductivity and mechanical durability for standard applications. Contact material selection does not affect substitution eligibility for this connector category.