H2157-01 Equivalent & Substitute Parts

Part Overview

The H2157-01 is a PC Pin Terminal Connector manufactured by Harwin Inc., designed for through-hole mounting applications. This component features a circular pin configuration with 0.050" (1.27mm) diameter and tin contact finish. The part is classified as Obsolete, making identification of suitable substitute components essential for ongoing design support and procurement continuity.

Substiute Parts

H2157-01

Harwin Inc.In Stock: 714H2157-01 Datasheet

Current PartRFQ

H2101B01

Harwin Inc.In Stock: 9066H2101B01 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the H2157-01 is constrained by the following critical parameters:

• Terminal Type: PC Pin (single end configuration)
• Termination Method: Swage
• Contact Material: Brass with Tin finish
• Mounting Type: Through Hole
• Insulation: Non-Insulated

The H2101B01 is identified as a manufacturer-recommended substitute. However, this substitute exhibits significant dimensional differences that must be evaluated for application compatibility:

• Pin diameter differs: H2157-01 uses 0.050" (1.27mm) above flange; H2101B01 uses 0.038" (0.97mm) below flange
• Overall length differs: H2157-01 is 0.504" (12.80mm); H2101B01 is 0.353" (8.97mm)
• Mounting hole diameter differs: H2157-01 requires 0.055" ~ 0.059" (1.40mm ~ 1.50mm); H2101B01 requires 0.070" ~ 0.074" (1.78mm ~ 1.87mm)
• Board thickness compatibility differs: H2157-01 supports 0.063" ~ 0.094" (1.60mm ~ 2.39mm); H2101B01 supports 0.063" (1.60mm)

These dimensional variations indicate that direct mechanical interchangeability is not assured without design review.

Parameter Comparison

Engineering Selection Recommendations

The H2101B01 is designated as the manufacturer-recommended substitute for the obsolete H2157-01. Both components maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory continuity.

The substitute part is currently in Active product status with substantial inventory availability (8994 Pcs), providing supply chain stability compared to the Obsolete H2157-01.

Both components share identical contact material (Brass), contact finish (Tin), termination method (Swage), and moisture sensitivity rating (MSL 1 - Unlimited), establishing a foundation for functional equivalence.

Selection of H2101B01 requires verification that the dimensional differences—specifically pin diameter, overall length, mounting hole diameter, and board thickness tolerance—are compatible with the target application's mechanical constraints and PCB specifications.

Frequently Asked Questions (FAQ)

Q: Can H2101B01 be used as a direct replacement for H2157-01 in existing designs?

A: Direct replacement requires design review. While both components share the same terminal type, contact material, and finish, dimensional parameters differ significantly. Pin diameter (0.050" vs 0.038"), overall length (0.504" vs 0.353"), and mounting hole diameter (0.055"–0.059" vs 0.070"–0.074") must be evaluated against PCB layout and connector specifications.

Q: What are the key compatibility criteria for PC Pin terminal substitution?

A: Critical parameters include terminal type, pin diameter, overall length, mounting hole diameter, board thickness tolerance, termination method, contact material, and contact finish. Deviation in any parameter may affect mechanical fit or electrical performance.

Q: Why is H2101B01 recommended despite dimensional differences?

A: H2101B01 is the manufacturer-designated substitute, indicating Harwin Inc. has evaluated functional equivalence within the product family. The substitute maintains identical contact material, finish, termination method, and compliance certifications. Dimensional differences reflect design evolution rather than functional incompatibility.

Q: Are there packaging considerations when sourcing H2101B01?

A: H2101B01 is supplied in Bulk packaging, whereas H2157-01 packaging is not specified. Bulk packaging may require reel or tape-and-reel format verification based on assembly process requirements.

Q: What compliance certifications apply to both parts?

A: Both H2157-01 and H2101B01 are ROHS3 compliant and REACH unaffected. MSL rating is 1 (Unlimited) for both components, indicating no moisture sensitivity restrictions for storage or handling.