82PR50KLF Trimmer Potentiometer Equivalent & Substitute Parts

Part Overview

The 82PR50KLF is a 50 kOhm, 0.5W through-hole trimmer potentiometer manufactured by TT Electronics/BI. This cermet-based component features top adjustment with PC pin termination and is rated for ±10% tolerance with a temperature coefficient of ±100ppm/°C. The part is currently active and ROHS3 compliant. Equivalent and substitute parts are identified when design requirements necessitate alternative manufacturers, packaging formats, physical dimensions, or compliance certifications while maintaining core electrical specifications.

Key Parameters

Parameter	Value
Resistance	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

Substitute Part Grouping Explanation

Substitution eligibility for the 82PR50KLF is determined by strict equivalence across the following parameters: 50 kOhm resistance value, 0.5W power rating, ±10% tolerance, ±100ppm/°C temperature coefficient, single-turn adjustment, top adjustment configuration, cermet resistive material, through-hole mounting, and PC pin termination. Physical dimensions may vary within the substitute group. Packaging format (bulk versus tube) and RoHS/REACH compliance status are secondary considerations that do not affect electrical interchangeability. All identified substitutes maintain these core electrical and mechanical specifications.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Resistance	Power (W)	Tolerance	Temp Coeff	Turns	Adjustment	Material	Mount Type	Termination	Size / Dimension	RoHS Status	Inventory
82PR50KLF	TT Electronics/BI	50 kOhms	0.5	±10%	±100ppm/°C	1	Top	Cermet	Through Hole	PC Pins	Round - 0.250" Dia (6.35mm)	ROHS3 Compliant	1017 Pcs
3329H-1-503	Bourns Inc.	50 kOhms	0.5	±10%	±100ppm/°C	1	Top	Cermet	Through Hole	PC Pins	Round - 0.250" Dia (6.35mm)	RoHS non-compliant	1049 Pcs
3329P-1-503LF	Bourns Inc.	50 kOhms	0.5	±10%	±100ppm/°C	1	Top	Cermet	Through Hole	PC Pins	Round - 0.250" Dia (6.35mm)	ROHS3 Compliant	1216 Pcs
3329P-DK9-503LF	Bourns Inc.	50 kOhms	0.5	±10%	±100ppm/°C	1	Top	Cermet	Through Hole	PC Pins	Round - 0.250" Dia (6.35mm)	ROHS3 Compliant	1275 Pcs
3329H-1-503LF	Bourns Inc.	50 kOhms	0.5	±10%	±100ppm/°C	1	Top	Cermet	Through Hole	PC Pins	Round - 0.250" Dia (6.35mm)	ROHS3 Compliant	6384 Pcs
3362F-1-503LF	Bourns Inc.	50 kOhms	0.5	±10%	±100ppm/°C	1	Top	Cermet	Through Hole	PC Pins	Rectangular - 0.275" x 0.260" Face (6.99mm x 6.60mm)	ROHS3 Compliant	1333 Pcs
3362P-1-503	Bourns Inc.	50 kOhms	0.5	±10%	±100ppm/°C	1	Top	Cermet	Through Hole	PC Pins	Rectangular - 0.275" x 0.260" Face (6.99mm x 6.60mm)	RoHS non-compliant	4400 Pcs
3362U-1-503LF	Bourns Inc.	50 kOhms	0.5	±10%	±100ppm/°C	1	Top	Cermet	Through Hole	PC Pins	Rectangular - 0.275" x 0.260" Face (6.99mm x 6.60mm)	ROHS3 Compliant	2441 Pcs
3386F-1-503LF	Bourns Inc.	50 kOhms	0.5	±10%	±100ppm/°C	1	Top	Cermet	Through Hole	PC Pins	Square - 0.375" x 0.375" Face (9.53mm x 9.53mm)	ROHS3 Compliant	5200 Pcs
3386G-1-503LF	Bourns Inc.	50 kOhms	0.5	±10%	±100ppm/°C	1	Top	Cermet	Through Hole	PC Pins	Square - 0.375" x 0.375" Face (9.53mm x 9.53mm)	ROHS3 Compliant	918 Pcs
3386P-1-503	Bourns Inc.	50 kOhms	0.5	±10%	±100ppm/°C	1	Top	Cermet	Through Hole	PC Pins	Square - 0.375" x 0.375" Face (9.53mm x 9.53mm)	RoHS non-compliant	2228 Pcs

Engineering Selection Recommendations

All substitute parts listed maintain electrical equivalence to the 82PR50KLF across resistance, power rating, tolerance, temperature coefficient, adjustment configuration, and termination style. Selection among substitutes should be based on compliance requirements and physical space constraints.

For applications requiring ROHS3 compliance, the following parts are suitable: 3329P-1-503LF, 3329P-DK9-503LF, 3329H-1-503LF, 3362F-1-503LF, 3362U-1-503LF, 3386F-1-503LF, and 3386G-1-503LF.

The 3329H-1-503 and 3362P-1-503 and 3386P-1-503 are RoHS non-compliant and should be selected only when legacy compliance status is acceptable for the application.

Physical dimensions vary across the substitute group. The 3329 series maintains the original round 0.250" diameter form factor. The 3362 series provides a rectangular 0.275" x 0.260" footprint. The 3386 series offers a larger square 0.375" x 0.375" form factor. PCB layout compatibility must be confirmed before selection.

Frequently Asked Questions (FAQ)

Q: Can the 3329H-1-503 be used as a direct replacement for the 82PR50KLF?

A: The 3329H-1-503 is electrically equivalent but is RoHS non-compliant. It maintains identical resistance, power rating, tolerance, temperature coefficient, and adjustment specifications. Selection depends on whether RoHS compliance is required for the application.

Q: What is the difference between the 3329, 3362, and 3386 series substitutes?

A: All three series are electrically equivalent to the 82PR50KLF. The primary difference is physical form factor. The 3329 series maintains a round 0.250" diameter matching the original part. The 3362 series uses a rectangular 0.275" x 0.260" footprint. The 3386 series uses a larger square 0.375" x 0.375" footprint. Selection is determined by available PCB space and mounting requirements.

Q: Are all listed substitutes ROHS3 compliant?

A: No. The 3329H-1-503, 3362P-1-503, and 3386P-1-503 are RoHS non-compliant. All other listed substitutes are ROHS3 compliant. Verify compliance requirements before part selection.

Q: Does packaging format affect electrical performance?

A: No. The 82PR50KLF is supplied in bulk packaging, while most substitutes are supplied in tube packaging. Packaging format does not affect electrical specifications or interchangeability.

Q: Can I substitute a part with different physical dimensions?

A: Physical dimensions must be compatible with PCB layout and mechanical assembly. While all listed parts are electrically equivalent, the 3362 and 3386 series have larger footprints than the original 82PR50KLF. Confirm PCB space availability before selecting a substitute with different dimensions.

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