NFR25, NFR25H Vishay BCcomponents Fusible, Non-Flammable Metal Film Leaded Resistors FEATURES Technology: Metal film Overload protection without risk of fire Wide range of overload currents (refer Fusing Characteristics graphs) Lead (Pb)-free solder contacts DESCRIPTION Pure tin plating provides compatibility with lead (Pb)-free A homogeneous film of metal alloy is deposited on a high and lead containing soldering processes grade ceramic body. After a helical groove has been cut in the resistive layer, tinned connecting wires of electrolytic Compatible to RoHS directive 2002/95/EC copper are welded to the end-caps. The resistors are coated with a grey, flame retardant lacquer which provides APPLICATIONS electrical, mechanical, and climatic protection. The Audio encapsulant is resistant to all cleaning solvents in Video accordance with IEC 60068-2-45. TECHNICAL SPECIFICATIONS DESCRIPTION UNIT NFR25 NFR25H (1) 0.22 to 15k 0.22 to 15k Resistance Range Resistance Tolerance % 5 5 Resistance Series E24 E24 Rated Dissipation, P W 0.33 0.5 70 Thermal Resistance (R ) K/W 240 150 th Temperature Coefficient 0.22 R 4.7 200 200 ppm/K 4.7 < R 15 200 100 15 < R 15 k 100 100 Operating Voltage, U DC or RMS V 250 350 max. Basic Specifications IEC 60 115-1 IEC 60 115-1 Climatic Category (IEC 60068-1) 55/155/56 55/155/56 Max. Resistance Change for Resistance Range, R max., after: Load (1000 h, P ): (1 % R + 0.05 ) (1 % R + 0.05 ) 70 Long Term Damp Heat Test (56 Days): (1 % R + 0.05 ) (1 % R + 0.05 ) Soldering (260 C, 10 s): (0.25 % R + 0.05 ) (0.25 % R + 0.05 ) Notes R value is measured with probe distance of 24 mm 1 mm using 4-terminal method (1) Ohmic values (other than resistance range) are available on request www.vishay.com For technical questions, contact: filmresistorsleaded vishay.com Document Number: 28737 1 Revision: 30-Mar-10 NFR25, NFR25H Fusible, Non-Flammable Metal Film Vishay BCcomponents Leaded Resistors PACKAGING AMMOPACK REEL MODEL TAPING PIECES CODE PIECES CODE 5000 A5 NFR25, NFR25H Axial, 52 mm 5000 R5 1000 A1 NFR25, NFR25H Radial 4000 N4 - - DIMENSIONS L 1 d D L 2 Outline DIMENSIONS (Resistor Types, Mass and Relevant Physical Dimensions) D L L d MASS max. 1 max. 2 max. TYPE (mm) (mm) (mm) (mm) (mg) NFR25 2.5 6.5 7.5 0.58 0.05 201 NFR25H PART NUMBER AND PRODUCT DESCRIPTION PART NUMBER: NFR2500002207JA100 N F R 2 5 0 0 0 0 2 2 0 7 J A 1 0 0 (1) MODEL/SIZE VARIANT TCR/MATERIAL VALUE TOLERANCE PACKAGING SPECIAL NFR2500 0 = Neutral 0 = Standard 3 digit value J = 5 % N4 The 2 digits are NFR25H0 Z = Value overload 1 digit multiplier A5 used for all (Special) MULTIPLIER A1 special parts. R5 00 = Standard -3 0 7 = *10 0 = *10 -2 1 8 = *10 1 = *10 -1 2 9 = *10 2 = *10 PRODUCT DESCRIPTION: NFR25 5 % A1 R22 NFR25 5 % A1 R22 (1) MODEL/SIZE TOLERANCE PACKAGING RESISTANCE VALUE NFR25 5 % N4 1K0 = 1 k NFR25H A5 4R7 = 4.7 A1 R5 Notes The PART NUMBER is shown to facilitate the introduction of a unified part numbering system for ordering products (1) Please refer packaging table Document Number: 28737 For technical questions, contact: filmresistorsleaded vishay.com www.vishay.com Revision: 30-Mar-10 2