82PAR50KLFTB Equivalent & Substitute Parts

Part Overview

The 82PAR50KLFTB is a 50 kOhm, 0.5W through-hole trimmer potentiometer manufactured by TT Electronics / BI Technologies. This cermet-based side-adjustment component features PC pin termination and is designed for applications requiring precision resistance adjustment in compact rectangular form factors. The product is currently obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and new design implementations.

Substiute Parts

82PAR50KLFTB

TT Electronics / BI TechnologiesIn Stock: 86382PAR50KLFTB Datasheet

Current PartRFQ

3329W-1-503LF

Bourns Inc.In Stock: 10103329W-1-503LF Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 82PAR50KLFTB is determined by strict equivalence across the following critical parameters:

• Resistance Value: 50 kOhms (exact match required)
• Power Rating: 0.5W / 1/2W (exact match required)
• Tolerance: ±10% (exact match required)
• Temperature Coefficient: ±100ppm/°C (exact match required)
• Number of Turns: 1 (exact match required)
• Adjustment Type: Side Adjustment (exact match required)
• Resistive Material: Cermet (exact match required)
• Mounting Type: Through Hole (exact match required)
• Termination Style: PC Pins (exact match required)

The 3329W-1-503LF from Bourns Inc. meets all substitution criteria. Physical dimensions may vary within acceptable PCB layout tolerances, and product status differences (obsolete vs. active) do not affect functional equivalence.

Parameter Comparison

Engineering Selection Recommendations

The 3329W-1-503LF (Bourns Trimpot® 3329 - Sealed series) is the qualified substitute for the obsolete 82PAR50KLFTB. Selection is based on:

• Complete electrical parameter equivalence across all critical specifications
• Active product status ensuring ongoing availability and supply chain continuity
• ROHS3 compliance matching the original component
• Identical functional performance in 50 kOhm, 0.5W, side-adjustment applications
• PC pin through-hole termination compatibility with existing PCB designs

Physical dimension differences (0.280" x 0.184" vs. 0.260" x 0.330") require PCB layout verification to confirm mechanical fit within allocated component space.

Frequently Asked Questions (FAQ)

Q: Can the 3329W-1-503LF directly replace the 82PAR50KLFTB in existing designs?

A: Yes, provided PCB layout accommodates the dimensional variation. The 3329W-1-503LF is 0.020" narrower and 0.146" taller than the original. Verify clearance around the component footprint before implementation.

Q: Are there electrical performance differences between these parts?

A: No. Both components share identical electrical specifications: 50 kOhm resistance, 0.5W power rating, ±10% tolerance, ±100ppm/°C temperature coefficient, and 1-turn side adjustment. Functional performance is equivalent.

Q: Why is the original 82PAR50KLFTB listed as obsolete?

A: Product obsolescence reflects manufacturer discontinuation. The 3329W-1-503LF remains in active production, providing long-term supply availability for equivalent applications.

Q: Do compliance certifications differ between the parts?

A: Both components are ROHS3 compliant. The 3329W-1-503LF carries REACH Affected status, while the 82PAR50KLFTB is REACH Unaffected. Both maintain EAR99 export classification.

Q: What packaging is available for the substitute part?

A: The 3329W-1-503LF is supplied in tube packaging, compared to the original component's standard packaging format.