CB10MH474K Equivalent & Substitute Parts

Part Overview

The CB10MH474K is a 470 kOhms through-hole trimmer potentiometer manufactured by TE Connectivity Passive Product, part of the CB10 series. This component features carbon resistive material, 0.15W power rating, and side adjustment capability with PC pin termination. The product is classified as obsolete, necessitating identification of active equivalent alternatives that maintain functional compatibility for circuit applications requiring 470 kOhms trimmer potentiometer functionality.

Substiute Parts

CB10MH474K

TE Connectivity Passive ProductIn Stock: 1045CB10MH474K Datasheet

Current PartRFQ

3386H-1-474LF

Bourns Inc.In Stock: 29783386H-1-474LF Datasheet

SimilarRFQ

3386V-1-474LF

Bourns Inc.In Stock: 9513386V-1-474LF Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CB10MH474K is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Resistance value: 470 kOhms
• Number of turns: 1.0 turn
• Adjustment type: Side Adjustment
• Mounting type: Through Hole
• Termination style: PC Pins
• Tolerance: ±10%

Allowable Variations:

• Power rating: The substitute parts (3386H-1-474LF and 3386V-1-474LF) feature 0.5W rating, which exceeds the original 0.15W specification. Higher power ratings are acceptable as they provide additional thermal margin without affecting circuit function.
• Resistive material: Substitutes use Cermet material instead of Carbon. Both materials achieve the specified resistance and tolerance within the operating parameters.
• Temperature coefficient: Substitutes feature ±100ppm/°C compared to the original ±1000ppm/°C. Superior temperature stability is acceptable.
• Physical dimensions: Substitutes are square (0.375" x 0.375") versus rectangular (0.425" x 0.386"). Both maintain through-hole PC pin mounting compatibility.

The Bourns Trimpot® 3386 series parts (3386H-1-474LF and 3386V-1-474LF) satisfy all mandatory parameters and provide enhanced specifications in power rating and temperature coefficient.

Parameter Comparison

Engineering Selection Recommendations

Product Status Consideration: The CB10MH474K is classified as obsolete. The substitute parts 3386H-1-474LF and 3386V-1-474LF are both active products from Bourns Inc., ensuring long-term availability and supply chain continuity.

Compliance and Certification: Both substitute parts maintain RoHS3 compliance, meeting current environmental and regulatory requirements. The original CB10MH474K carries RoHS compliance status. The substitutes provide enhanced compliance posture through ROHS3 certification and REACH unaffected status.

Electrical Equivalence: The substitute parts maintain identical resistance (470 kOhms), tolerance (±10%), and adjustment characteristics (1-turn side adjustment). The increased power rating (0.5W versus 0.15W) and improved temperature coefficient (±100ppm/°C versus ±1000ppm/°C) represent performance enhancements that do not compromise circuit compatibility.

Mechanical Compatibility: Both substitute parts feature through-hole PC pin termination identical to the original part. Physical dimension differences (square versus rectangular profile) do not affect electrical function or PCB mounting compatibility for standard through-hole applications.

Frequently Asked Questions (FAQ)

Q: Can the 3386H-1-474LF or 3386V-1-474LF directly replace the CB10MH474K in existing designs?

A: Yes. Both substitute parts maintain identical resistance value (470 kOhms), tolerance (±10%), number of turns (1), adjustment type (side adjustment), mounting type (through hole), and termination style (PC pins). These parameters define functional equivalence for trimmer potentiometer applications.

Q: What is the difference between the 3386H-1-474LF and 3386V-1-474LF?

A: Both parts are electrically and mechanically identical. The designation difference (H versus V) indicates orientation variants within the Bourns Trimpot® 3386 series. Selection between these parts depends on PCB layout requirements and adjustment access orientation.

Q: Why do the substitute parts have higher power ratings (0.5W versus 0.15W)?

A: Higher power ratings provide additional thermal margin and operational headroom. This enhancement does not affect circuit function and is acceptable for direct substitution. The circuit will operate identically to the original specification.

Q: Are there any compliance differences between the original and substitute parts?

A: The substitute parts carry ROHS3 compliance and REACH unaffected status, representing current regulatory standards. The original CB10MH474K is RoHS compliant. Both meet environmental requirements; the substitutes provide enhanced compliance documentation.

Q: How do the temperature coefficients compare?

A: The original part specifies ±1000ppm/°C while substitutes specify ±100ppm/°C. The substitute parts provide superior temperature stability, representing a tenfold improvement. This enhanced performance is acceptable for direct substitution.

Q: Are physical dimension differences significant for PCB integration?

A: The original part is rectangular (0.425" x 0.386") while substitutes are square (0.375" x 0.375"). Both maintain through-hole PC pin mounting. Dimension differences require PCB layout verification but do not affect electrical compatibility. Standard through-hole footprints accommodate both profiles.

Q: What is the inventory status of these substitute parts?

A: The 3386H-1-474LF has 2904 pieces in stock and the 3386V-1-474LF has 905 pieces in stock, both classified as active products. The original CB10MH474K, though obsolete, has 991 pieces available as legacy inventory.