CT-6ETP503 Equivalent & Substitute Parts

Part Overview

The CT-6ETP503 is a 50 kOhm, 0.5W through-hole trimmer potentiometer manufactured by Nidec Components Corporation. This cermet-based component features top adjustment with PC pin termination and is designed for applications requiring precision resistance tuning in compact form factors. The part is active in production and ROHS3 compliant. Equivalent and substitute parts are identified based on matching electrical specifications, mechanical compatibility, and functional equivalence to support procurement flexibility and supply chain continuity.

Key Parameters

Parameter	Specification
Resistance Value	50 kOhms
Power Rating	0.5W (1/2W)
Tolerance	±10%
Temperature Coefficient	±100ppm/°C
Number of Turns	1
Adjustment Type	Top Adjustment
Resistive Material	Cermet
Mounting Type	Through Hole
Termination Style	PC Pins
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the CT-6ETP503 is determined by strict equivalence across the following critical parameters: resistance value (50 kOhms), power rating (0.5W), tolerance (±10%), temperature coefficient (±100ppm/°C), number of turns (1), adjustment type (top adjustment), resistive material (cermet), mounting type (through hole), and termination style (PC pins). All identified substitute parts match these core electrical and mechanical specifications. Physical dimensions vary within acceptable ranges for through-hole mounting applications. Packaging format and inventory availability do not affect functional substitutability.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Resistance	Power (W)	Tolerance	Temp Coeff (ppm/°C)	Turns	Adjustment	Material	Mount Type	Termination	RoHS Status
CT-6ETP503	Nidec Components Corporation	50 kOhms	0.5	±10%	±100	1	Top	Cermet	Through Hole	PC Pins	ROHS3
25PR50KLF	TT Electronics/BI	50 kOhms	0.5	±10%	±100	1	Top	Cermet	Through Hole	PC Pins	RoHS
3329H-1-503LF	Bourns Inc.	50 kOhms	0.5	±10%	±100	1	Top	Cermet	Through Hole	PC Pins	ROHS3
3362P-1-503RLF	Bourns Inc.	50 kOhms	0.5	±10%	±100	1	Top	Cermet	Through Hole	PC Pins	ROHS3
72PR50KLF	TT Electronics/BI	50 kOhms	0.5	±10%	±100	1	Top	Cermet	Through Hole	PC Pins	ROHS3
82PR50KLF	TT Electronics/BI	50 kOhms	0.5	±10%	±100	1	Top	Cermet	Through Hole	PC Pins	ROHS3
T73YE503KT20	Vishay Sfernice	50 kOhms	0.5	±10%	±100	1	Top	Cermet	Through Hole	PC Pins	ROHS3
T73YP503KT20	Vishay Sfernice	50 kOhms	0.5	±10%	±100	1	Top	Cermet	Through Hole	PC Pins	ROHS3

Engineering Selection Recommendations

All identified substitute parts are active products with ROHS3 compliance or equivalent RoHS certification, ensuring regulatory alignment with the CT-6ETP503. The 3329H-1-503LF, 3362P-1-503RLF, 72PR50KLF, 82PR50KLF, T73YE503KT20, and T73YP503KT20 are ROHS3 compliant. The 25PR50KLF carries RoHS compliance. Selection among these alternatives should be based on packaging requirements, inventory availability, and physical form factor compatibility with the target application. The CT-6ETP503, 3329H-1-503LF, 3362P-1-503RLF, 72PR50KLF, 82PR50KLF, T73YE503KT20, and T73YP503KT20 all carry ROHS3 certification. REACH status varies; the 3329H-1-503LF and 3362P-1-503RLF are REACH Affected, while all others are REACH Unaffected.

Frequently Asked Questions (FAQ)

Q: What makes these parts functionally equivalent to the CT-6ETP503? A: All substitute parts share identical electrical specifications: 50 kOhm resistance, 0.5W power rating, ±10% tolerance, ±100ppm/°C temperature coefficient, single-turn adjustment, cermet resistive material, top adjustment mechanism, through-hole mounting, and PC pin termination. These parameters define functional equivalence for trimmer potentiometer applications.

Q: Are there physical dimension differences between the CT-6ETP503 and its substitutes? A: Yes. The CT-6ETP503 features a square 0.276" x 0.276" face (7.00mm x 7.00mm). Substitute parts vary: 25PR50KLF is square 0.270" x 0.270" (6.86mm x 6.86mm); 3329H-1-503LF is round 0.250" diameter (6.35mm); 3362P-1-503RLF is rectangular 0.275" x 0.260" (6.99mm x 6.60mm); 72PR50KLF is square 0.375" x 0.375" (9.53mm x 9.53mm); 82PR50KLF is round 0.250" diameter (6.35mm); T73YE503KT20 and T73YP503KT20 are rectangular 0.276" x 0.260" (7.00mm x 6.60mm). Physical compatibility depends on PCB layout constraints.

Q: What packaging options are available? A: The CT-6ETP503 is supplied in Tape & Box format. Substitutes are available in Tube (25PR50KLF, 3329H-1-503LF, T73YE503KT20, T73YP503KT20), Cut Tape (3362P-1-503RLF), and Bulk (72PR50KLF, 82PR50KLF) packaging. Packaging selection should align with assembly process requirements and order quantities.

Q: Are all substitutes ROHS3 compliant? A: Most substitutes are ROHS3 compliant: CT-6ETP503, 3329H-1-503LF, 3362P-1-503RLF, 72PR50KLF, 82PR50KLF, T73YE503KT20, and T73YP503KT20. The 25PR50KLF carries RoHS compliance. Verify compliance requirements for your specific application.

Q: What is the difference between REACH Affected and REACH Unaffected status? A: REACH Affected parts (3329H-1-503LF, 3362P-1-503RLF) are subject to REACH regulatory requirements. REACH Unaffected parts (CT-6ETP503, 25PR50KLF, 72PR50KLF, 82PR50KLF, T73YE503KT20, T73YP503KT20) are not subject to these requirements. Selection depends on end-market regulatory obligations.

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