SM4A101 Trimmer Potentiometer - Equivalent & Substitute Parts

Part Overview

The SM4A101 is a 100 Ohm, 0.25W surface mount trimmer potentiometer with J lead termination and side adjustment capability. Manufactured by Vishay Beyschlag/Draloric/BC Components, this component features a cermet resistive element and 12-turn adjustment mechanism housed in a rectangular package measuring 4.90mm x 3.70mm.

The SM4A101 is classified as obsolete. Locating equivalent substitute parts is necessary to support ongoing production requirements, maintenance operations, and design continuity for systems currently utilizing this component.

Substiute Parts

SM4A101

Vishay Beyschlag/Draloric/BC ComponentsIn Stock: 1053SM4A101 Datasheet

Current PartRFQ

PVG5H101C03R00

Bourns Inc.In Stock: 1488PVG5H101C03R00 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SM4A101 is determined by strict equivalence across the following critical parameters:

• Resistance value: 100 Ohms
• Power rating: 0.25W minimum
• Termination style: J Lead
• Mounting type: Surface Mount
• Adjustment type: Side Adjustment
• Resistive material: Cermet
• Tolerance: ±10%
• Moisture sensitivity level: 1 (Unlimited)

The PVG5H101C03R00 manufactured by Bourns Inc. satisfies all substitution criteria. Minor variations in number of turns (11 vs. 12) and temperature coefficient (±150ppm/°C vs. ±100ppm/°C) remain within acceptable engineering tolerances for this component category. Package dimensions are functionally equivalent (4.80mm x 3.70mm vs. 4.90mm x 3.70mm).

Parameter Comparison

Engineering Selection Recommendations

The PVG5H101C03R00 is the qualified substitute for the obsolete SM4A101. The Bourns component carries active product status and maintains ROHS3 compliance, providing long-term supply chain stability compared to the discontinued Vishay part.

Both components are classified under ECCN EAR99 and share identical HTSUS commodity codes (8533.40.8050), confirming regulatory equivalence for import/export purposes.

The substitute part accommodates the same PCB footprint and mounting requirements. The 11-turn adjustment mechanism versus the original 12-turn design presents no functional limitation for standard potentiometer applications. The increased temperature coefficient specification (±150ppm/°C) remains within acceptable drift parameters for general-purpose trimmer potentiometer applications.

Frequently Asked Questions (FAQ)

Q: Can the PVG5H101C03R00 be used as a direct replacement without PCB modifications?

A: Yes. Both components feature identical J lead termination, surface mount configuration, and functionally equivalent package dimensions (4.80mm x 3.70mm versus 4.90mm x 3.70mm). No PCB layout changes are required.

Q: What is the significance of the 11-turn versus 12-turn difference?

A: The reduction from 12 to 11 turns affects adjustment resolution but does not impact electrical performance or functional compatibility. Applications requiring precise multi-turn adjustment should evaluate whether the reduced turn count meets specific tuning requirements.

Q: Does the higher temperature coefficient of the substitute part affect circuit performance?

A: The PVG5H101C03R00 specifies ±150ppm/°C compared to the SM4A101's ±100ppm/°C. This difference is acceptable for general-purpose trimmer potentiometer applications. Circuits with stringent temperature stability requirements should conduct thermal performance validation.

Q: Are there supply chain advantages to using the Bourns substitute?

A: The PVG5H101C03R00 maintains active product status with 1445 units in current inventory, compared to the obsolete SM4A101. The Bourns component ensures continued availability and long-term supply chain support.

Q: What compliance certifications apply to the substitute part?

A: The PVG5H101C03R00 is ROHS3 compliant and REACH affected. Both components share identical ECCN and HTSUS classifications, confirming regulatory equivalence for procurement and international trade purposes.