72PMR100KLF Equivalent & Substitute Parts

Part Overview

The 72PMR100KLF is a 100 kOhms, 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 based on matching electrical specifications, mechanical compatibility, and regulatory compliance to support component procurement flexibility and supply chain continuity.

Key Parameters

Parameter	Value
Resistance	100 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 is determined by strict equivalence across the following parameters: resistance value (100 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 substitutes meet these core electrical and mechanical criteria. Variations in physical dimensions, packaging format, and regulatory compliance status are noted but do not preclude functional substitution when application constraints permit.

Parameter Comparison

Part Number	Manufacturer	Resistance	Power (W)	Tolerance	Temp Coeff	Turns	Adjustment	Material	Mount Type	Termination	RoHS Status	Size	Packaging
72PMR100KLF	TT Electronics/BI	100 kΩ	0.5	±10%	±100ppm/°C	1	Top	Cermet	Through Hole	PC Pins	ROHS3	Square 0.375" x 0.375"	Bulk
3362F-1-104LF	Bourns Inc.	100 kΩ	0.5	±10%	±100ppm/°C	1	Top	Cermet	Through Hole	PC Pins	ROHS3	Rectangular 0.275" x 0.260"	Tube
3362H-1-104	Bourns Inc.	100 kΩ	0.5	±10%	±100ppm/°C	1	Top	Cermet	Through Hole	PC Pins	Non-compliant	Rectangular 0.275" x 0.260"	Tube
3362H-1-104LF	Bourns Inc.	100 kΩ	0.5	±10%	±100ppm/°C	1	Top	Cermet	Through Hole	PC Pins	ROHS3	Rectangular 0.275" x 0.260"	Tube
3362P-1-104	Bourns Inc.	100 kΩ	0.5	±10%	±100ppm/°C	1	Top	Cermet	Through Hole	PC Pins	Non-compliant	Rectangular 0.275" x 0.260"	Tube
3362P-1-104LF	Bourns Inc.	100 kΩ	0.5	±10%	±100ppm/°C	1	Top	Cermet	Through Hole	PC Pins	ROHS3	Rectangular 0.275" x 0.260"	Tube
3362R-1-104LF	Bourns Inc.	100 kΩ	0.5	±10%	±100ppm/°C	1	Top	Cermet	Through Hole	PC Pins	ROHS3	Rectangular 0.275" x 0.260"	Tube
3362U-1-104ALF	Bourns Inc.	100 kΩ	0.5	±10%	±100ppm/°C	1	Top	Cermet	Through Hole	PC Pins	ROHS3	Rectangular 0.275" x 0.260"	Cut Tape
3362U-1-104LF	Bourns Inc.	100 kΩ	0.5	±10%	±100ppm/°C	1	Top	Cermet	Through Hole	PC Pins	ROHS3	Rectangular 0.275" x 0.260"	Tube
3386F-1-104	Bourns Inc.	100 kΩ	0.5	±10%	±100ppm/°C	1	Top	Cermet	Through Hole	PC Pins	Non-compliant	Square 0.375" x 0.375"	Tube
3386F-1-104LF	Bourns Inc.	100 kΩ	0.5	±10%	±100ppm/°C	1	Top	Cermet	Through Hole	PC Pins	ROHS3	Square 0.375" x 0.375"	Tube

Engineering Selection Recommendations

For applications requiring ROHS3 compliance, the following substitutes are qualified: 3362F-1-104LF, 3362H-1-104LF, 3362P-1-104LF, 3362R-1-104LF, 3362U-1-104ALF, 3362U-1-104LF, and 3386F-1-104LF. The 3362H-1-104 and 3362P-1-104 are RoHS non-compliant and should be selected only when legacy design requirements or specific application constraints mandate their use. Parts 3362H-1-104 and 3386F-1-104 are also non-compliant. The 3386F-1-104LF maintains the square form factor of the original 72PMR100KLF, while Bourns 3362 series variants employ a rectangular geometry. Packaging format varies between tube, bulk, and cut tape options; selection depends on assembly process requirements and inventory management protocols.

Frequently Asked Questions (FAQ)

Q: Can 3362 series parts substitute for the 72PMR100KLF in existing designs? A: Yes. All 3362 series variants listed meet the core electrical specifications: 100 kOhms resistance, 0.5W power rating, ±10% tolerance, ±100ppm/°C temperature coefficient, 1-turn adjustment, and cermet resistive material with PC pin termination. Physical dimensions differ (rectangular vs. square), requiring PCB layout verification.

Q: What is the difference between 3362P-1-104 and 3362P-1-104LF? A: Both parts are electrically identical. The primary distinction is RoHS compliance status: 3362P-1-104 is non-compliant, while 3362P-1-104LF is ROHS3 compliant. The "LF" suffix indicates lead-free termination.

Q: Are 3386F series parts direct replacements? A: The 3386F-1-104LF is electrically and mechanically equivalent to the 72PMR100KLF, maintaining the square 0.375" x 0.375" form factor. The 3386F-1-104 (non-LF variant) is non-compliant and should be avoided for new designs requiring RoHS certification.

Q: How do packaging formats affect part selection? A: Tube packaging is standard for most substitutes. The 3362U-1-104ALF is supplied in cut tape format, suitable for automated pick-and-place assembly. Bulk packaging is available only for the original 72PMR100KLF. Selection depends on production volume and assembly equipment compatibility.

Q: Which substitute offers the highest inventory availability? A: The 3362P-1-104LF has the largest stock position at 86,460 pieces, followed by 3362P-1-104 at 3,760 pieces. Inventory levels should be confirmed with the supplier for current availability.

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