TE Connectivity 1-1623866-3 Trimmer Potentiometer Equivalent & Substitute Parts

Part Overview

The TE Connectivity 1-1623866-3 is a 100 kOhm, 0.75W through-hole trimmer potentiometer with PC pin termination, featuring cermet resistive material and 15-turn side adjustment capability. This component is classified as obsolete, necessitating identification of active equivalent parts for new designs and ongoing production requirements. The substitute part identified maintains functional and mechanical compatibility while offering active product status and improved availability.

Key Parameters

Parameter	Value	Criticality for Substitution
Resistance Value	100 kOhms	Critical
Power Rating	0.75W (3/4W)	Critical
Tolerance	±10%	Critical
Number of Turns	15	Critical
Adjustment Type	Side Adjustment	Critical
Resistive Material	Cermet	Critical
Mounting Type	Through Hole	Critical
Termination Style	PC Pins	Critical
Face Dimension	Rectangular - 0.256" x 0.193" (6.50mm x 4.90mm)	Critical
Temperature Coefficient	±250ppm/°C	Secondary
Moisture Sensitivity Level	1 (Unlimited)	Secondary

Substitute Part Grouping Explanation

Substitution eligibility for the TE Connectivity 1-1623866-3 is determined by strict equivalence across all critical electrical and mechanical parameters. The following parameters must match exactly for direct substitution:

Resistance value: 100 kOhms
Power rating: 0.75W
Tolerance: ±10%
Number of turns: 15
Adjustment type: Side Adjustment
Resistive material: Cermet
Mounting type: Through Hole
Termination style: PC Pins
Face dimensions: Rectangular configuration within tolerance

The Vishay Sfernice T18104KT10 satisfies all critical substitution criteria. Secondary parameters such as temperature coefficient and compliance certifications may vary within acceptable engineering ranges without affecting functional compatibility in standard applications.

Parameter Comparison

Parameter	TE Connectivity 1-1623866-3	Vishay Sfernice T18104KT10	Match Status
Resistance	100 kOhms	100 kOhms	Equivalent
Power Rating	0.75W	0.75W	Equivalent
Tolerance	±10%	±10%	Equivalent
Number of Turns	15	15	Equivalent
Adjustment Type	Side Adjustment	Side Adjustment	Equivalent
Resistive Material	Cermet	Cermet	Equivalent
Mounting Type	Through Hole	Through Hole	Equivalent
Termination Style	PC Pins	PC Pins	Equivalent
Face Dimension	0.256" x 0.193" (6.50mm x 4.90mm)	0.252" x 0.189" (6.40mm x 4.80mm)	Compatible
Temperature Coefficient	±250ppm/°C	±100ppm/°C	Substitute Superior
Product Status	Obsolete	Active	Substitute Current
RoHS Compliance	Not specified	ROHS3 Compliant	Substitute Compliant
REACH Status	Not specified	REACH Unaffected	Substitute Compliant

Engineering Selection Recommendations

The Vishay Sfernice T18104KT10 is the qualified substitute for the obsolete TE Connectivity 1-1623866-3. Selection of this substitute is based on the following engineering factors:

Functional Equivalence: All critical electrical parameters match exactly, including resistance value, power rating, tolerance, and turn count. Mechanical compatibility is confirmed through equivalent mounting type, termination style, and compatible face dimensions.

Product Status: The T18104KT10 maintains active product status with confirmed inventory availability (1482 pcs), eliminating supply chain risk associated with the obsolete 1-1623866-3.

Regulatory Compliance: The substitute part carries ROHS3 compliance and REACH unaffected status, meeting current environmental and regulatory requirements. The original part does not specify these certifications.

Performance Enhancement: The T18104KT10 provides superior temperature coefficient performance (±100ppm/°C versus ±250ppm/°C), resulting in improved stability across operating temperature ranges.

Dimensional Compatibility: Face dimensions of 0.252" x 0.189" (6.40mm x 4.80mm) are compatible with PCB layouts designed for the original 0.256" x 0.193" (6.50mm x 4.90mm) specification, with minimal tolerance variation.

Frequently Asked Questions (FAQ)

Q: Can the Vishay Sfernice T18104KT10 be used as a direct replacement for the TE Connectivity 1-1623866-3 in existing designs?

A: Yes. The T18104KT10 meets all critical electrical and mechanical specifications. The minor dimensional variation (0.004" and 0.004" respectively) falls within standard PCB layout tolerances for through-hole components. No circuit redesign is required.

Q: What is the significance of the temperature coefficient difference between the two parts?

A: The T18104KT10 exhibits a temperature coefficient of ±100ppm/°C compared to ±250ppm/°C for the original part. This represents improved stability across temperature variations. For applications with strict temperature stability requirements, the substitute provides enhanced performance. For applications where the original ±250ppm/°C specification was acceptable, the substitute remains fully compatible.

Q: Are there packaging differences between these parts?

A: The TE Connectivity 1-1623866-3 packaging is not specified in available documentation. The Vishay Sfernice T18104KT10 is supplied in tube packaging. Confirm packaging requirements with your procurement process.

Q: Does the substitute part meet current environmental regulations?

A: Yes. The T18104KT10 is ROHS3 compliant and REACH unaffected. The original part does not specify these certifications. For applications requiring regulatory compliance documentation, the substitute provides current certification status.

Q: Are the PC pin terminations identical between both parts?

A: Yes. Both parts use PC pin termination style for through-hole mounting. Pin configuration and spacing are equivalent, ensuring compatibility with existing PCB designs.

Q: What is the availability status of each part?

A: The TE Connectivity 1-1623866-3 is obsolete with 890 pcs reported in stock. The Vishay Sfernice T18104KT10 is active with 1482 pcs in stock, providing superior long-term availability for production and design requirements.

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