> Passive elements>Resistors>Fusible wirewound resistors>Vitrohm fusible wirewound resistors, 2W, 5%, CRF253-4 series>CRF253-4 5% 330 R

Manufacturers

CRF253-4 5% 330 R

fusible wirewound resistors

• by Vitrohm
• series CRF253-4
• taped
• triggered instantly on contact with mains voltage (230Veff), without flame or explosion
• the resistor wire is wound around a capped ceramic carrier and fused to the caps
• in case of vaporisation of the wire, a special varnish absorbs the metal vapour and prevents arcing and consequent short circuit
• the winding wire is dimensioned in such a way that, for all resistance values between 10R and 330R vaporisation occurs with mains voltage
• the resistor elements are encased in a silicon varnish and, in the classic sense, are not electrically insulated
• for resistance values under 10R as well as for other voltages, it has been ensured that the resistor is flame retardant.
• the triggering function, however, has to be tested on an individual basis
• resistance tolerance: ±5%
• power rating (70°C): 2W
• operating voltage, max.: (PxR)1/2
• thermal resistance: 85K/W
• insulation resistance: not insulated
• insulation voltage (1 min.): 75V
• temperature coefficient: +120 ±50x10-6/K
• temperature range: -55 to +350°C
• climatic category: 55/350/56
• failure rate (value dependent) approx. 10x10-9/h
• terminal tensile strenght: 50N
• solderability: 2.5s
• derating: linear 70°C to 350°C (0W)

dimensions

CRF253-4 5% 330 R

35353 CRF253-4 5% 330 R CRF250JT-73-330RYY CRF250JT-73-330RYY fusible wirewound resistors. • by Vitrohm• series CRF253-4• taped• triggered instantly on contact with mains voltage (230Veff), without flame or explosion• the resistor wire is wound around a capped ceramic carrier and fused to the caps• in case of vaporisation of the wire, a special varnish absorbs the metal vapour and prevents arcing and consequent short circuit• the winding wire is dimensioned in such a way that, for all resistance values between 10R and 330R vaporisation occurs with mains voltage• the resistor elements are encased in a silicon varnish and, in the classic sense, are not electrically insulated• for resistance values under 10R as well as for other voltages, it has been ensured that the resistor is flame retardant.• the triggering function, however, has to be tested on an individual basis• resistance tolerance: ±5%• power rating (70°C): 2W• operating voltage, max.: (PxR)1/2• thermal resistance: 85K/W• insulation resistance: not insulated• insulation voltage (1 min.): 75V• temperature coefficient: +120 ±50x10-6/K• temperature range: -55 to +350°C• climatic category: 55/350/56• failure rate (value dependent) approx. 10x10-9/h• terminal tensile strenght: 50N• solderability: 2.5s• derating: linear 70°C to 350°C (0W)

Specifications

manufacturer
Manufacturer's name CRF250JT-73-330RYY
Resistance [Ω] 330
Power [W] 2
Tolerance [%] 5
Data Sheet

Unit price

0,269 €

Stock: 1360
Further delivery:
CW 11/2025

Minimum order quantity 10 units or
multiples of 10.