H442K2BCA Axial Leaded Precision Resistor Specification

Key Features:

• Ultra-Precision: Down to 0.05%
• Low Temperature Coefficient of Resistance (TCR): Down to 5ppm/°C
• Long Term Stability
• Power Rating: Up to 1 Watt at 70°C

Type HOLCO Series:
The Holco range of Precision Metal Film Resistors is designed for industrial and military applications requiring cost-effective components. Manufactured with tightly controlled processes, including sputter coating of metal alloy films to ceramic substrates and laser spiralling, these resistors offer close tolerance and high stability. An epoxy coating is applied for environmental and mechanical protection.

Electrical Characteristics:

• Power rating at 70°C: 1W for H4P, 0.5W for H4, and 0.25W for H8
• Temperature Rise: 70°C for H4P, 55°C for H4, and 40°C for H8
• Limiting Element Voltage: 500V for H4P, 350V for H4 and H8

General Data:

• Lead Material: Solderability to BS CECC 40101 004 Para 4.15.1
• Encapsulation: Conformal Epoxy Coating
• Resistor Marking: Legend printed in accordance with CECC 40000 Para 2.4
• Solvent Resistance: The epoxy coating and print will withstand commonly used industrial cleansing solvents.

Resistance Range by TCR and Tolerance:

• TCR (ppm/°C): 0.05%, 0.1% - 0.25%, 0.5% - 1.0%
• Available Ranges: 10R to 500K, 10R to 1M0, 10R to 2M0, 10R to 4M0

Performance Characteristics:

• Voltage Coefficient of Resistance (Between 10% and Full Rated Voltage): Less Than 5ppm/Volt
• Insulation Resistance at 500 Volts: Greater Than 10¹² Ohms
• Resistance to Soldering Heat (260°C for 10 Secs.): Less Than 0.05%
• Short Term Overload (6.25 Times Rated Wattage for 5 Seconds): Less Than 0.06%
• Ambient Temperature Range: -55°C to +155°C
• Rapid Change of Temperature (-55°C to +155°C, 5 cycles): Less Than 0.04%
• Shelf Life (at Normal Room Temp.): Less Than 0.05% Per Annum
• Vibration and Bump Tests: Less Than 0.04%

Dimensions:

• H4P: Body Length (L) max 10.50mm, Body Diameter (D) max 3.70mm, Lead Diameter (d) max 0.60mm, Lead Length (l) nominal 30.0mm
• H4: Body Length (L) max 10.50mm, Body Diameter (D) max 3.70mm, Lead Diameter (d) max 0.60mm, Lead Length (l) nominal 30.0mm
• H8: Body Length (L) max 7.20mm, Body Diameter (D) max 2.70mm, Lead Diameter (d) max 0.60mm, Lead Length (l) nominal 30.0mm

Weight (g/100 resistors):

• H4P and H4: 40g
• H8: 24g

Ordering Information:

• H8 100R B Y A
• Common Part Resistance Value
• Tolerance: A – 0.05%, B – 0.1%, C – 0.25%, D – 0.5%, F – 1.0%
• TCR Code: A – 5ppm, B – 10ppm, Y – 15ppm, D – 25ppm, C – 50ppm, Z – 100ppm
• Release: A – Part can only be sold with commercial or C of C release