HP 1404-001640 is an NTC thermistor assembly, a temperature-sensing component identified for use in printer parts listings. Its designation specifies 7 kΩ resistance and a 3370 K temperature coefficient, providing the key electrical identifiers for this part.
The full listed designation also includes 0.3 mW/°C. Together, these markings distinguish this assembly by its stated thermistor characteristics. The part number and specifications make it identifiable as the particular HP assembly 1404-001640.