Isabellenhütte A-H1 Series

Product Features

A-H1 current sense resistor
4-terminal through-hole design
Resistance range from 0.001Ω to 100Ω
Tolerance of ±0.1% or ±1%
TCR of <±30 ppm/°C
Power rating of 10W on a suitable heat sink
Temperature range from -55°C to +140°C

Applications

The A-H1 current sensing precision resistor series from Isabellenhütte offers 4-terminal through-hole connection technology for current sensing applications. Designed for easy heat sink mounting, the Kelvin connections on this resistor allow high precision measurements even with low resistance values ranging from 1mΩ to 100Ω. The A-H1 series from Isabellenhütte has a low inductance of <10nH and has high pulse power handling capabilities.

4-terminal current sensing resistor
Through-hole
Resistance range from 0.001Ω to 100Ω
Tolerance options available of ±0.1% and ±1%
TCR of <±30 ppm/°C (+20°C to +60°C)
Temperature range from -55°C to +140°C
Power rating of 10W on a suitable heat sink
Power rating of 3W in free air
Inductance of <10nH
Maximum constant current of 81A
Designed for easy heat sink mounting
Low self-heating

Typical applications for the A-H1 current sensing precision resistor series include:

Measurement equipment
Reference resistors in laboratories
Current sources
Laboratory power supplies

Isabellenhütte A-H Series Specification Table

Attributes	Value
Resistance value *	1mΩ to 100Ω
Tolerance	±0.1% / ±1%
TCR	<±30 ppm/°C (20-60°C)
Temperature range	-55°C to +140°C
Power rating	3W (free air) / 10W (on a suitable heatsink)
Thermal resistance to ambient	<15°C/W (Rth)
Thermal resistance to aluminium substrate	<3°C/W (Rthi)
Dielectric withstanding voltage	500V AC/DC
Inductance	<10nH
Stability (deviation after 2000hrs)	<0.1% (Tᴋ = 80°C with heatsink) / <0.2% (Tᴋ = 95°C with heatsink) Tᴋ = Terminal Temperature

* Please visit the Ordering Info tab or contact us for further details

Isabellenhütte is one of the world’s leading suppliers of high-quality precision and power resistors. They produce these low-resistance resistors for a variety of applications such as the ones above. Isabellenhütte & Rhopoint Components are your ideal partners when it comes to achieving the best possible measurement results in the smallest spaces. Please visit www.isabellenhuette.de for more information.

Isabellenhütte A-H1 Series

Resistance Value
Tolerance
Series / Model
Termination / Connection
Clear

Custom resistance value (Ω) *
Custom AT Range (AT) *
Custom Capacity (lbs) *
Custom Pressure (Bar/PSI) *
Custom Resistance Value Element 1 (Ω) *
Custom Resistance Value Element 2 (Ω) *
Custom lead length (mm) *
Custom lead length (inches) *

Quantity

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Specifications

Dimensions	18.5 x 5 x 46mm
Product Type	4-Terminal Current Sensing Resistor
Package / Size	Through-hole
Resistance Value	0.001Ω, 0.005Ω, 0.01Ω, 0.02Ω, 0.05Ω, 0.1Ω, 0.2Ω, 0.25Ω, 0.3Ω, 0.5Ω, 1Ω, 5Ω, 33Ω, 100Ω
Minimum Resistance	0.001Ω
Maximum Resistance	100Ω
Tolerance	±0.1%, ±1%
Temperature Coefficient	±30 ppm/°C
Current Rating	81A
Power Rating	3W, 10W
Temperature Range (°C)	-55 to +140°C
Series / Model	A-H1
Termination / Connection	F1-K2

Series / Model (A-H1)

A-H1: A-H1

Resistance Value (XXXX)

Resistance value, in ohms, is expressed by a series of 4 characters, 3 of which represent significant digits. R (ohms) designates the location of the decimal point.

Termination / Connection (XX-XX)

F1-K2: F1-K2

Tolerance (X.X)

0.1: ±0.1%
1.0: ±1%