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LVK Series

DIMENSIONS

Series	L	W	t	a	b
LVK12 (1206)	3.2 ±0.2	1.6 ±0.2	0.5 ±0.15	1.0 ±0.2	0.55 ±0.2
LVK20 (2010)	5.0 ±0.2	2.5 ±0.2	0.5 ±0.15	1.7 ±0.2	0.9 ±0.2
LVK24 (2412)	6.4 ±0.2	3.2 ±0.2	0.5 ±0.15	2.1 ±0.2	1.2 ±0.2
LVK25 (1224)	3.2 ±0.2	6.4 ±0.2	0.5 ±0.2	0.4 ±0.2	2.7 ±0.2

Current sense resistors enable the measurement of current flow in a circuit by monitoring a voltage drop across a precisely calibrated resistance. The LVK chip features four terminals, also known as a "Kelvin" configuration. This configuration enables current to be applied through two opposite terminals and a sensing voltage to be measured across the other two terminals, eliminating the resistance and temperature coefficient of the terminals for a more accurate current measurement.

Isolating the voltage and current terminals (see schematic) facilitates a very accurate current measurement. Ohmite's proprietary technology offers an excellent Temperature Coefficient of Resistance (TCR) even for very low resistance values. The resistive element consists of a durable, anti-corrosive metal alloy that combines reliable performance with the ability to withstand harsh environments.

FEATURES Designed for automatic insertion Industry standard sizes High-precision kelvin connect capability in a small package SPECIFICATIONS Resistance Range: 0.001Ω - 0.05Ω Operating Temperature Range: -40°C to +125°C Rated Ambient Temperature: +70°C Resistance Tolerance: 0.5% and 1% standard Temperature Coefficient: LVK12, LVK20, LVK24: 50ppm standard; LVK25: 100ppm, 200ppm, or 300ppm based on resistance value Terminals: 100% matte tin Coating Material: epoxy resin SCHEMATIC

LAND PATTERN (mm) Series L W A B LVK12 1.75 1.10 1.00 0.30 LVK20 2.55 1.55 1.40 0.50 LVK24 3.25 1.90 2.00 0.60 Series L W A B LVK25 1.40 3.30 2.20 1.00 Land pattern dimensions are for reference only

HOW TO ORDER

STANDARD VALUES

	LVK12	LVK20	LVK24	LVK25
	1% Tolerance
	0.01	0.01	0.01	0.001
	0.012		0.012	0.002
		0.015	0.015	0.003
				0.005
	0.02	0.02	0.02
	0.024	0.027
	0.03	0.03	0.03	0.01
			0.039
		0.039
	0.047		0.047
	0.05	0.05	0.05
	0.5% Tolerance
	0.01	0.01	0.01
	0.02	0.02	0.02
	0.03	0.03	0.03
	0.05	0.05	0.05

REEL SPECIFICATIONS

• HVF Series: High Voltage Film Flip Chip
• TGHG Series: Precision Current Sense Resistors
• TAP800 Series: 800 Watt Heat Sinkable Planar Resistor
• HPW Series: High Precision Welded Axial and Radial
• HSP Series: Hermetically Sealed Precision Ultra-High Stability Axial Terminals
• LVK Series: Four Terminal High Precision Current Sense
• G Series: Capacitor Discharge & Symmetry
• TK/TN Series: 15 and 20 Watt TO220 Package Thick and Thin Film
• TGH Series: 120 and 200 Watt SOT227 Package Thick Film Power
• 2010 SMD: 0.6 Watt Wirewound Surface Mount Power
• Super Mox Series: High Voltage
• TFH85 Series: 85 Watt TO264 Package Thick Film Power
• TFS Series: Surge Capable Thick Film Non Inductive
• P Series: Epoxy Molded Precision Wirewound Axial Terminals
• 60 Series: Four Terminal Bare Element
• MC1RD Series: SMT-MOX Divider
• FCSL Series: Metal Foil Current Sense
• 14A Series: Alumina Body Current Sense
• MCS Series: Metal Element Current Sense Resistive Metal Alloy mOhm Technology, SMD
• TEH100 100 Watt: TEH100 100 Watt Thick Film Power Resistors for High Frequency and Pulse Loading Applications
• Control Knobs: Control Knobs
• TEH70 Series: 70 Watt TO247 Package Thick Film Power
• WL Series: Miniature Wirewound Current Sense
• WH/WN Series: Miniature Molded Wirewound
• WFH Series: Aluminum Housed Wirewound Power
• RW1/RW2 Series: Surface Mount Four Terminal Current Sense
• 60S Series: Surface Mount Metal Plate Current Sense
• TDH35 Series: 35 Watt TO-263 Package Thick Film Power Surface Mount
• Audio Gold Resistors: Designed for high-end loudspeaker and amplifier applications
• 10 Series: Axial Wire Element Current Sense
• 30 Series: 30 Series/825J Series/RH Series High Energy Wirewound with Various Constructions