CT-94P-105 Equivalent & Substitute Parts

Part Overview

The CT-94P-105 is a 1 MOhm, 0.5W through-hole trimmer potentiometer manufactured by Vishay Beyschlag/Draloric/BC Components. This cermet-based component features PC pin termination with side adjustment capability and an 18-turn configuration. The part is currently obsolete, making identification of functionally equivalent substitutes essential for ongoing maintenance, repair, and legacy system support.

Substiute Parts

CT-94P-105

Vishay Beyschlag/Draloric/BC ComponentsIn Stock: 849CT-94P-105 Datasheet

Current PartRFQ

3296P-1-105

Bourns Inc.In Stock: 9173296P-1-105 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the CT-94P-105 is determined by strict equivalence across the following critical parameters:

• Resistance value: 1 MOhm
• Power rating: 0.5W
• Tolerance: ±10%
• Temperature coefficient: ±100ppm/°C
• Adjustment type: Side Adjustment
• Resistive material: Cermet
• Mounting type: Through Hole
• Termination style: PC Pins

The 3296P-1-105 manufactured by Bourns Inc. meets all these criteria. While the substitute features a 25-turn configuration compared to the original 18-turn design, and differs slightly in physical dimensions (0.375" x 0.190" versus 0.378" x 0.189"), these variations remain within acceptable mechanical and functional tolerances for through-hole PC pin applications.

Parameter Comparison

Engineering Selection Recommendations

The 3296P-1-105 is the primary substitute for the obsolete CT-94P-105. Both components share identical electrical specifications across resistance, power rating, tolerance, and temperature coefficient. The Bourns component maintains active product status, ensuring continued availability and supply chain reliability.

Physical dimensions are equivalent within manufacturing tolerances. The increased turn count (25 versus 18) provides finer adjustment resolution without affecting electrical performance or circuit compatibility. Both components are RoHS non-compliant, maintaining consistency with legacy system requirements.

For applications requiring RoHS compliance or lead-free termination, alternative part numbers within the Bourns 3296P series (such as 3296P-1-105LF) may be evaluated based on specific system requirements and certification needs.

Frequently Asked Questions (FAQ)

Q: Can the 3296P-1-105 directly replace the CT-94P-105 in existing circuits?

A: Yes. Both components meet identical electrical specifications for resistance, power rating, tolerance, and temperature coefficient. Physical dimensions are equivalent within standard manufacturing tolerances for through-hole PC pin applications.

Q: What is the significance of the different turn counts (18 versus 25)?

A: The 25-turn configuration in the 3296P-1-105 provides finer adjustment granularity. This does not affect electrical performance or circuit compatibility; it only changes the mechanical adjustment sensitivity per rotation.

Q: Are there compliance differences between the two parts?

A: Both components are RoHS non-compliant. If RoHS compliance is required, the 3296P-1-105LF variant of the Bourns component offers lead-free termination.

Q: What are the physical dimension tolerances?

A: The CT-94P-105 measures 0.378" x 0.189" (9.60mm x 4.80mm), while the 3296P-1-105 measures 0.375" x 0.190" (9.53mm x 4.83mm). These differences fall within standard PCB layout tolerances for through-hole component placement.

Q: Why is the CT-94P-105 obsolete?

A: The part has reached end-of-life status. The 3296P-1-105 from Bourns remains in active production and is the recommended equivalent for new designs and legacy system replacements.