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) DESCRIPTION • Lead (Pb)-free solder contacts A homogeneous film of metal alloy is deposited on a high grade ceramic body. After a helical groove has been cut in the resistive layer, tinned connecting wires of electrolytic copper are welded to the end-caps. The resistors are coated with a grey, flame retardant lacquer which provides electrical, mechanical, and climatic protection. The encapsulant is resistant to all cleaning solvents in accordance with IEC 60068-2-45. • Pure tin plating provides compatibility with lead (Pb)-free and lead containing soldering processes • Compatible to RoHS directive 2002/95/EC APPLICATIONS • Audio • Video TECHNICAL SPECIFICATIONS DESCRIPTION UNIT NFR25 NFR25H Resistance Range (1) Ω 0.22 to 15k 0.22 to 15k Resistance Tolerance % ±5 ±5 E24 E24 W 0.33 0.5 K/W 240 150 ≤ ± 200 ≤ ± 200 4.7 Ω < R ≤ 15 Ω ≤ ± 200 ≤ ± 100 15 Ω < R ≤ 15 kΩ ≤ ± 100 ≤ ± 100 250 350 IEC 60 115-1 IEC 60 115-1 55/155/56 55/155/56 Load (1000 h, P70): ± (1 % R + 0.05 Ω) ± (1 % R + 0.05 Ω) Long Term Damp Heat Test (56 Days): ± (1 % R + 0.05 Ω) ± (1 % R + 0.05 Ω) ± (0.25 % R + 0.05 Ω) ± (0.25 % R + 0.05 Ω) Resistance Series Rated Dissipation, P70 Thermal Resistance (Rth) Temperature Coefficient 0.22 Ω ≤ R ≤ 4.7 Ω ppm/K Operating Voltage, Umax. DC or RMS Basic Specifications Climatic Category (IEC 60068-1) V Max. Resistance Change for Resistance Range, ΔR max., after: Soldering (260 °C, 10 s): 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 1 For technical questions, contact: [email protected] Document Number: 28737 Revision: 30-Mar-10 NFR25, NFR25H Fusible, Non-Flammable Metal Film Leaded Resistors Vishay BCcomponents PACKAGING AMMOPACK MODEL REEL TAPING NFR25, NFR25H PIECES CODE 5000 A5 1000 A1 4000 N4 PIECES CODE 5000 R5 - - Axial, 52 mm NFR25, NFR25H Radial DIMENSIONS L1 Ød ØD L2 Outline DIMENSIONS (Resistor Types, Mass and Relevant Physical Dimensions) TYPE Dmax. (mm) L1 max. (mm) L2 max. (mm) Ød (mm) MASS (mg) 2.5 6.5 7.5 0.58 ± 0.05 201 NFR25 NFR25H PART NUMBER AND PRODUCT DESCRIPTION PART NUMBER: NFR2500002207JA100 N F MODEL/SIZE NFR2500 NFR25H0 R 2 5 VARIANT 0 = Neutral Z = Value overload (Special) 0 0 0 TCR/MATERIAL 0 = Standard 0 2 2 0 VALUE 3 digit value 1 digit multiplier MULTIPLIER 7 = *10-3 8 = *10-2 9 = *10-1 7 J TOLERANCE J=±5% 0 = *100 1 = *101 2 = *102 A 1 0 PACKAGING (1) N4 A5 A1 R5 0 SPECIAL The 2 digits are used for all special parts. 00 = Standard PRODUCT DESCRIPTION: NFR25 5 % A1 R22 NFR25 5% MODEL/SIZE TOLERANCE NFR25 NFR25H ±5% A1 PACKAGING R22 (1) N4 A5 A1 R5 RESISTANCE VALUE 1K0 = 1 kΩ 4R7 = 4.7 Ω 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 Revision: 30-Mar-10 For technical questions, contact: [email protected] www.vishay.com 2 NFR25, NFR25H Fusible, Non-Flammable Metal Film Leaded Resistors Vishay BCcomponents PRODUCTS WITH RADIAL LEADS (NFR25, NFR25H) P2 P H1 H H0 L L1 W0 W P0 F P1 D0 DIMENSIONS (Radial Taping) SYMBOL PARAMETER VALUE TOLERANCE UNIT P Pitch of components 12.7 ± 1.0 mm P0 Feed-hole pitch 12.7 ± 0.2 mm P1 Feed-hole centre to lead at topside at the tape 3.85 ± 0.5 mm P2 Feed-hole center to body center 6.35 ± 1.0 mm F Lead-to-lead distance 4.8 + 0.7/- 0 mm W Tape width 18.0 ± 0.5 mm W0 Minimum hold down tape width 5.5 - mm H1 Component height 29.0 Max. mm H0 Lead wire clinch height 16.5 ± 0.5 mm H Height of component from tape center 19.5 ±1 mm mm D0 Feed-hole diameter 4.0 ± 0.2 L Maximum length of snipped lead 11.0 - mm L1 Minimum lead wire (tape portion) shortest lead 2.5 - mm Note • Please refer document number 28721 “Packaging” for more detail MARKING The nominal resistance and tolerance are marked on the resistor using four colored bands in accordance with IEC 60062, marking codes for resistors and capacitors. For ease of recognition a fifth ring is added, which is violet for type NFR25 and white for type NFR25H. FUNCTIONAL PERFORMANCE, PRODUCT CHARACTERIZATION Standard values of nominal resistance are taken from the E24 series for resistors with a tolerance of ± 5 %. The values of the E24 series are in accordance with IEC 60063. OUTLINES The length of the body (L1) is measured by inserting the leads into holes of two identical gauge plates and moving these plates parallel to each other until the resistor body is clamped without deformation (IEC 60294). LIMITING VALUES TYPE LIMITING VOLTAGE U (1) (V) LIMITING POWER P70 (W) NFR25 250 0.33 NFR25H 350 0.5 Note (1) The maximum voltage that may be continuously applied to the resistor element, see IEC 60115-1. The maximum permissible hot-spot temperature is 155 °C. www.vishay.com 3 For technical questions, contact: [email protected] Document Number: 28737 Revision: 30-Mar-10 NFR25, NFR25H Fusible, Non-Flammable Metal Film Leaded Resistors Vishay BCcomponents DERATING The power that the resistor can dissipate depends on the operating temperature. Pmax. (% Prated) 100 50 0 - 55 0 50 70 100 Tamb (°C) 155 Maximum dissipation (Pmax.) in percentage of rated power as a function of the ambient temperature (Tamb) FUSING CHARACTERISTICS The resistors will fuse without the risk of fire and within an indicated range of overload. Fusing means that the resistive value of the resistor increases at least 100 times. The fusing characteristic is measured under constant voltage. 103 103 t (s) t (s) 102 102 10 10 1 1 10-1 0 4 8 12 16 10-1 20 24 Poverload (W) NFR25 This graph is based on measured data which may deviate according to the application. Fusing Characteristics: ≤ 1 Ω 0 2 4 6 8 10 12 Poverload (W) NFR25 This graph is based on measured data which may deviate according to the application. Fusing Characteristics: 1 Ω ≤ R ≤ 15 Ω 103 t (s) 102 10 1 10-1 0 2 4 6 8 10 12 Poverload (W) NFR25 This graph is based on measured data which may deviate according to the application. Fusing Characteristics: 15 Ω ≤ R ≤ 15 kΩ Document Number: 28737 Revision: 30-Mar-10 For technical questions, contact: [email protected] www.vishay.com 4 NFR25, NFR25H Fusible, Non-Flammable Metal Film Leaded Resistors Vishay BCcomponents FUSING CHARACTERISTICS 103 103 t (s) t (s) 102 102 10 10 1 1 10-1 0 4 8 12 16 10-1 20 24 Poverload (W) NFR25H This graph is based on measured data which may deviate according to the application. Fusing Characteristics: ≤ 1 Ω 0 4 8 12 16 20 24 Poverload (W) NFR25H This graph is based on measured data which may deviate according to the application. Fusing Characteristic: 1 Ω ≤ R ≤ 15 kΩ PULSE LOADING CAPABILITIES 103 Pˆ max. (W) 102 tp/ti = 1000 10 1 500 200 100 50 20 10 5 2 10-1 10-6 10-5 10-4 10-3 10-2 10-1 ti (s) 1 NFR25 Pulse on a regular basis; maximum permissible peak pulse power (Pˆ max.) as a function of pulse duration (ti), 0.22 Ω ≤ R < 15 Ω 103 Pˆ max. (W) 102 10 tp/ti = 1000 100 1 20 2 10-1 10-6 10-5 10-4 10-3 10-2 10-1 ti (s) 1 NFR25 Pulse on a regular basis; maximum permissible peak pulse power (Pˆ max.) as a function of pulse duration (ti), 15 Ω ≤ R ≤ 15 kΩ www.vishay.com 5 For technical questions, contact: [email protected] Document Number: 28737 Revision: 30-Mar-10 NFR25, NFR25H Fusible, Non-Flammable Metal Film Leaded Resistors Vishay BCcomponents PULSE LOADING CAPABILITIES 600 Uˆ max. (V) 500 400 300 200 100 0 10-6 10-5 10-4 10-3 10-2 10-1 ti (s) 1 NFR25 Pulse on a regular basis; maximum permissible peak pulse voltage (Uˆ max.) as a function of pulse duration (ti) 103 Pˆ max. (W) 102 10 tp/ti = 1000 500 200 100 50 20 10 5 1 10-1 10-6 2 10-5 10-4 10-3 10-2 10-1 ti (s) 1 NFR25H Pulse on a regular basis; maximum permissible peak pulse power (Pˆ max.) as a function of pulse duration (ti) 1200 Uˆ max. (V) 1000 800 600 400 200 0 10-6 10-5 10-4 10-3 10-2 10-1 ti (s) 1 NFR25H Pulse on a regular basis; maximum permissible peak pulse voltage (Uˆ max.) as a function of pulse duration (ti) Document Number: 28737 Revision: 30-Mar-10 For technical questions, contact: [email protected] www.vishay.com 6 NFR25, NFR25H Fusible, Non-Flammable Metal Film Leaded Resistors Vishay BCcomponents APPLICATION INFORMATION 100 100 ΔT (K) 80 ΔT (K) 80 60 60 40 40 20 20 0 0 0.2 0.4 P (W) 0.6 0 0 0.2 0.4 P (W) 0.6 NFR25H Hot-spot temperature rise (ΔT) as a function of dissipated power NFR25 Hot-spot temperature rise (ΔT) as a function of dissipated power 50 50 ΔT (K) 40 ΔT (K) 40 5 mm 10 mm 5 mm 30 30 10 mm 15 mm 15 mm 20 20 10 10 0 0 0.2 0.4 P (W) 0.6 0 0 0.2 0.4 P (W) 0.6 Minimum distance from resistor body to P.C.B. = 1 mm Minimum distance from resistor body to P.C.B. = 1 mm NFR25 Temperature rise (ΔT) at thr lead end (soldering point) as a function of dissipated power at various lead lengths after mounting NFR25H Temperature rise (ΔT) at thr lead end (soldering point) as a function of dissipated power at various lead lengths after mounting TESTS AND REQUIREMENTES Essentially all tests are carried out in accordance with IEC 60115-1 specification, category LCT/UCT/56 (rated temperature range: Lower category temperature, upper category temperature; damp heat, long term, 56 days). The tests are carried out in accordance with IEC 60068-2-xx test method, “Recommended basic climatic and mechanical robustness testing procedure for electronic components” and under standard atmospheric conditions according to IEC 60068-1, 5.3. www.vishay.com 7 In the Test Procedures and Requirements table the tests and requirements are listed with reference to the relevant clauses of IEC 60115-1 and IEC 60068-2-xx test methods. A short description of the test procedure is also given. In some instances deviations from the IEC recommendations were necessary for our method of specifying. For inflammability requirements reference is made to IEC 60115-1. All soldering tests are performed with mildly activated flux. For technical questions, contact: [email protected] Document Number: 28737 Revision: 30-Mar-10 NFR25, NFR25H Fusible, Non-Flammable Metal Film Leaded Resistors Vishay BCcomponents TEST PROCEDURES AND REQUIREMENTS IEC 60115-1 CLAUSE IEC 60068-2 TEST METHOD 4.4.1 4.4.2 REQUIREMENTS TEST Visual examination Dimensions (outline) Resistance (refer note on first page for measuring distance) 4.5 4.18 20 (Tb) 4.29 45 (Xa) Resistance to soldering heat Component solvent resistance 4.17 20 (Ta) Solderability Solderability (after aging) 4.7 4.16 Voltage proof on insulation Robustness of terminations: Tensile all samples Bending half number of samples Torsion other half of samples 4.16.2 21 (Ua1) 4.16.3 21 (Ub) 4.16.4 21 (Uc) 4.20 29 (Eb) Bump 4.22 6 (Fc) Vibration 4.19 14 (Na) Rapid change of temperature Climatic sequence: Dry heat Damp heat (accelerated) 1st cycle Cold Low air pressure Damp heat (accelerated) remaining cycles 4.23 4.23.2 2 (Ba) 4.23.3 30 (Db) 4.23.4 4.23.5 1 (Aa) 13 (M) 4.23.6 30 (Db) 4.24 78 (Cab) Damp heat (steady state) 4.25.1 Endurance (at 70 °C) 4.25.3 Endurance at upper category temperature 4.8 Temperature coefficient 4.12 4.26 Noise Accidental overload 4.6.1.1 Insulation resistance Document Number: 28737 Revision: 30-Mar-10 PROCEDURE Gauge (mm) Applied voltage (+ 0 %/- 10 %): R < 10 Ω: 0.1 V 10 Ω ≤ R < 100 Ω: 0.3 V 100 Ω ≤ R < 1 kΩ: 1 V 1 kΩ ≤ R < 10 kΩ: 3 V 10 kΩ ≤ R ≤ 15 kΩ: 10 V Thermal shock: 10 s; 260 °C; 3 mm from body Isopropyl alcohol or H2O followed by brushing 2 s; 235 °C: Solder bath method; SnPb40 3 s; 245 °C: Solder bath method; SnAg3Cu0.5 8 h steam or 16 h, 155 °C; leads immersed 6 mm; for 2 s at 235 °C: Solder bath (SnPb40) for 3 s at 245 °C: Solder bath (SnAg3Cu0.5) method URMS = 500 V during 1 min; metal block method NFR25 NFR25H No holes; clean surface; no damage See Dimensions Table R - Rnom.: max. ± 5 % ΔR max.: ± (0.25 % R + 0.05 Ω) No visual damage Good tinning (≥ 95 % covered); no damage Good tinning (≥ 95 % covered); no damage No breakdown or flashover Load 10 N; 10 s Number of failures < 10 x 10-6 Load 5 N; 4 x 90° Number of failures < 10 x 10-6 No damage ΔR max.: ± (0.25 % R + 0.05 Ω) No damage ΔR max.: ± (0.25 % R + 0.05 Ω) 3 x 360° in opposite directions 3 x 1500 bumps in 3 directions; 40 g Frequency 10 Hz to 500 Hz; displacement 1.5 mm or acceleration 10 g; 3 directions; total 6 h (3 x 2 h) 30 min at LCT and 30 min at UCT; 5 cycles No damage ΔR max.: ± (0.25 % R + 0.05 Ω) No visual damage ΔR max.: ± (0.25 % R + 0.05 Ω) 16 h; 155 °C 24 h; 55 °C; 90 % to 100 % RH 2 h; - 55 °C 2 h; 8.5 kPa; 15 °C to 35 °C Rins min.: 103 MΩ ΔR max.: ± (1.5 % R + 0.1 Ω) 5 days; 55 °C; 95 % to 100 % RH 56 days; 40 °C; 90 % to 95 % RH; loaded with 0.01 P70 (IEC steps: 0 V to 100 V) 1000 h; loaded with P70 or Umax.; 1.5 h ON and 0.5 h OFF ΔR max.: ± (1 % R + 0.05 Ω) 1000 h; no load ΔR max.: ± (1 % R + 0.05 Ω) Between - 55 °C and + 155 °C 0.22 Ω ≤ R ≤ 4.7 Ω 4.7 Ω < R ≤ 15 Ω 15 Ω < R ≤ 15 kΩ IEC 60195 Cheese-cloth Maximum voltage Umax. DC = 500 V after 1 min; metal block method Rins min.: 103 MΩ ΔR max.: ± (1 % R + 0.05 Ω) ≤ ± 200 ppm/K ≤ ± 200 ppm/K ≤ ± 200 ppm/K ≤ ± 100 ppm/K ≤ ± 100 ppm/K ≤ ± 100 ppm/K < 0.1 μV/V Non flammable For technical questions, contact: [email protected] Rins min.: 104 MΩ www.vishay.com 8 NFR25, NFR25H Vishay BCcomponents Fusible, Non-Flammable Metal Film Leaded Resistors 12NC INFORMATION FOR HISTORICAL CODING REFERENCE Last Digit of 12NC Indicating Resistance Decade • The resistors have a 12 digit numeric code starting with 23 • The subsequent 7 digits indicate the resistor type and packaging RESISTANCE DECADE LAST DIGIT 0.22 Ω to 0.91 Ω 7 1 Ω to 9.1 Ω 8 - The first 2 digits indicate the resistance value 10 Ω to 91 Ω 9 - The last digit indicates the resistance decade 100 Ω to 910 Ω 1 1 kΩ to 9.1 kΩ 2 10 kΩ to 15 kΩ 3 • The remaining 3 digits indicate the resistance value: 12NC Example The 12NC of a NFR25 resistor with value 750 Ω, supplied on a bandolier of 1000 units in ammopack is: 2322 205 13751. 12NC (Resistors Type and Packaging) 23.. ... ..... TYPE BANDOLIER IN AMMOPACK RADIAL TAPED BANDOLIER ON REEL STRAIGHT LEADS STRAIGHT LEADS 4000 UNITS 1000 UNITS 5000 UNITS 5000 UNITS NFR25 06 204 03... 22 205 13... 22 205 33... 22 205 23... NFR25H 06 207 03... 22 207 13... 22 207 33... 22 207 23... www.vishay.com 9 For technical questions, contact: [email protected] Document Number: 28737 Revision: 30-Mar-10 Legal Disclaimer Notice www.vishay.com Vishay Disclaimer ALL PRODUCT, PRODUCT SPECIFICATIONS AND DATA ARE SUBJECT TO CHANGE WITHOUT NOTICE TO IMPROVE RELIABILITY, FUNCTION OR DESIGN OR OTHERWISE. Vishay Intertechnology, Inc., its affiliates, agents, and employees, and all persons acting on its or their behalf (collectively, “Vishay”), disclaim any and all liability for any errors, inaccuracies or incompleteness contained in any datasheet or in any other disclosure relating to any product. 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