NTC Thermistors, Accuracy Line

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1 N Thermistors, Accuracy Line FEATURES Accuracy over a wide temperature range High stability over a long life Excellent price/performance ratio APPLICATIONS Temperature sensing and control QUICK REFERENCE DATA PARAMETER VALUE Resistance value at 25 C 3.3 Ω to 470 kω Tolerance on -value ±2%; ±3%; ±5%; ±10% Tolerance on B 25/85 -value ±0.5% to ±3% Maximum dissipation 500 mw Dissipation factor δ (for information only) 7 mw/k 8.5 mw/k (for to 689) 1.2 s 15 s Response time Thermal time constant τ (for information only) Operating temperature range: at zero dissipation; continuously 40 to +125 C at zero dissipation; 150 C for short periods at maximum dissipation (500 mw) 0 to 55 C Climatic category 40/125/56 Mass 0.3 g These thermistors have a negative temperature coefficient. The device consists of a chip with two tinned solid copper-plated leads. It is grey lacquered and colour coded, but not insulated. PACKAGING The thermistors are packed in bulk or tape on reel; see code numbers and relevant packaging quantities. ELECTRICAL DATA AND ORDERING INFORMATION B 25/85 -VALUE CATALOG NUMBER COLOR CODE (see dimensions drawing and note 1) ±2% ±3% ±5% ±10% I II III K ±3% orange orange gold K ±3% yellow violet gold K ±3% blue grey gold K ±3% brown black black K ±3% brown green black K ±3% red red black K ±3% orange orange black K ±3% yellow violet black K ±3% blue grey black K ±0.75% brown black brown K ±0.75% brown green brown K ±0.75% red red brown K ±0.75% orange orange brown K ±0.5% yellow violet brown K ±0.5% blue grey brown K ±0.5% brown black red K ±0.5% brown green red 70 Revision: 10-Oct-03

2 N Thermistors, Accuracy Line /4/6... Notes B 25/85 -VALUE 1. Dependent upon -tolerance, the band IV is coloured as follows: a) for ±2%, band IV is coloured red b) for ±3%, band IV is coloured orange c) for ±5%, band IV is coloured gold d) for ±10%, band IV is coloured silver. CATALOG NUMBER DERATING AND TEMPERATURE TOLERANCES P 100 Power derating curve. COLOR CODE (see dimensions drawing and note 1) ±2% ±3% ±5% ±10% I II III K ±0.5% red black red K ±0.75% red red red K ±0.75% red violet red K ±0.75% orange orange red K ±0.75% yellow violet red K ±0.75% blue grey red K ±0.75% brown black orange K ±2% brown red orange K ±2% brown green orange K ±2% red red orange K ±1.5% orange orange orange K ±1.5% yellow violet orange K ±1.5% blue grey orange K ±1.5% brown black yellow K ±2.5% brown green yellow K ±2.5% red red yellow K ±1.5% orange orange yellow K ±1.5% yellow violet yellow o T amb ( C) DIMENSIONS in millimeters L B P d ΛΙ ΙΙΙ ΙΙ Ι H 2 H to T PHYSICAL DIMENSIONS FOR RELEVANT TYPE CODE NUMBER to to B max MARKING The thermistors are marked with coloured bands; see dimensions drawing and Electrical data and ordering information. MOUNTING By soldering in any position. d ± ± ±0.06 H 2 MIN. MAX. max ± ± ±1.5 L P T max Document Number: For technical questions contact: nlr.europe@vishay.com Revision: 10-Oct-03 71

3 N Thermistors, Accuracy Line TEMPERATURE DEVIATION AS A FUNCTION OF THE AMBIENT TEMPERATURE. TEMPERATURE DEVIATION AS A FUNCTION OF THE AMBIENT TEMPERATURE. 3.0 T (K) Curves valid for 2.2 to 10 kω. Curve 1: / = 5%. Curve 2: / = 3%. Curve 3: / = 2%. Curve 4: / = 1% (for series only). T (K) Curves valid for 12 to 22 kω. Curve 1: / = 5%. Curve 2: / = 3%. Curve 3: / = 2% o T ( C) o T ( C) TEMPERATURE DEVIATION AS A FUNCTION OF THE AMBIENT TEMPERATURE. TEMPERATURE DEVIATION AS A FUNCTION OF THE AMBIENT TEMPERATURE. T (K) Curves valid for 33 to 47 kω. Curve 1: / = 5%. Curve 2: / = 3%. Curve 3: / = 2%. Curve 4: / = 1% (for series only). T (K) Curves valid for 68 to 100 kω. Curve 1: / = 5%. Curve 2: / = 3%. Curve 3: / = 2%. Curve 4: / = 1% (for series only) o T ( C) TEMPERATURE DEVIATION AS A FUNCTION OF THE AMBIENT TEMPERATURE o T ( C) TEMPERATURE DEVIATION AS A FUNCTION OF THE AMBIENT TEMPERATURE. T (K) Curves valid for 150 to 220 kω. Curve 1: / = 5%. Curve 2: / = 3%. Curve 3: / = 2%. T (K) Curves valid for 330 to 470 kω. Curve 1: / = 5%. Curve 2: / = 3%. Curve 3: / = 2% o T ( C) o T ( C) 72 Revision: 10-Oct-03

4 N Thermistors, Accuracy Line /4/6... R T VALUE AND TOLERANCE These thermistors have a narrow tolerance on the B-value, the result of which provides a very small tolerance on the nominal resistance value over a wide temperature range. For this reason the usual graphs of R = f(t) are replaced by Resistance Values at Intermediate Temperatures Tables, together with a formula to calculate the characteristics with a high precision. FORMULAE TO DETERMINE NOMINAL RESISTANCE VALUES The resistance values at intermediate temperatures, or the operating temperature values, can be calculated using the following interpolation laws (extended Steinhart and Hart ): ( A+ B T+ C T 2 + D T 3 ) R (T) = R ref e T (R) = R A 1 + B 1 ln C (2) R 1 ln R + D ref R 1 ln R 1 ref R ref where: A, B, C, D, A 1, B 1, C 1 and D 1 are constant values depending on the material concerned; see table below. R ref is the resistance value at a reference temperature (in this event 25 C). T is the temperature in K. Formulae numbered (1) and (2) are interchangeable with an error of max C in the range 25 C to 125 C and max C in the range 40 C to +25 C. (1) DETERMINATION OF THE RESISTANCE/TEMPERATURE DEVIATION FROM NOMINAL VALUE The total resistance deviation is obtained by combining the -tolerance and the resistance deviation due to B-tolerance. When: X = -tolerance Y = resistance deviation due to B-tolerance Z = complete resistance deviation, then: Z = X Y % or Z X + Y. When: = temperature coefficient T = temperature deviation, Z then: T = The temperature tolerances are plotted in the graphs on the previous page. Example: at 0 C, assume X = 5%, Y = 0.89% and = 5.08%/K (see Table ), then: 5 Z = % = { } 100% = % ( 5.93% ) Z 5.93 T = = = C ( 1.17 C) 5.08 A N with a -value of 10 kω has a value of kω between 1.17 and C. PARAMETERS FOR DETERMINING NOMINAL RESISTANCE VALUES B 25/85 -VALUE (K) A Notes 1. Temperature < 25 C. 2. Temperature 25 C. B (K) C (10 5 K 2 ) D (10 6 K 3 ) A 1 (10 3 ) B 1 (10 4 K 1 ) C 1 (10 6 K 2 ) D 1 (10 7 K 3 ) (1) (2) Document Number: For technical questions contact: nlr.europe@vishay.com Revision: 10-Oct-03 73

5 N Thermistors, Accuracy Line R T / R T / Revision: 10-Oct-03

6 N Thermistors, Accuracy Line /4/6... R T / R T / Document Number: For technical questions contact: nlr.europe@vishay.com Revision: 10-Oct-03 75

7 N Thermistors, Accuracy Line R T / R T / Revision: 10-Oct-03

8 N Thermistors, Accuracy Line /4/6... R T / R T / Document Number: For technical questions contact: nlr.europe@vishay.com Revision: 10-Oct-03 77

9 N Thermistors, Accuracy Line R T / R T / Revision: 10-Oct-03

10 N Thermistors, Accuracy Line /4/6... R T / R T / Document Number: For technical questions contact: nlr.europe@vishay.com Revision: 10-Oct-03 79

11 N Thermistors, Accuracy Line R T / R T / Revision: 10-Oct-03

12 N Thermistors, Accuracy Line /4/6... R T / R T / Document Number: For technical questions contact: nlr.europe@vishay.com Revision: 10-Oct-03 81

13 N Thermistors, Accuracy Line R T / R T / Revision: 10-Oct-03

14 N Thermistors, Accuracy Line /4/6... R T / R T / Document Number: For technical questions contact: nlr.europe@vishay.com Revision: 10-Oct-03 83

15 N Thermistors, Accuracy Line R T / WITH AT 68 KΩ AND 100 KΩ T amb R T / Revision: 10-Oct-03

16 N Thermistors, Accuracy Line /4/6... T amb R T / WITH AT 470 KΩ T amb R T / Note to Resistance Values At Intermediate Temperature Tables 1. Replace dot in last 5 digits of catalog number by a number according to the following details and depending on tolerance on required -value: 4 for a tolerance of ±2%; 6 for a tolerance of ±3%; 3 for a tolerance of ±5%; 2 for a tolerance of ±10%. Document Number: For technical questions contact: nlr.europe@vishay.com Revision: 10-Oct-03 85

17 N Thermistors, Accuracy Line PACKAGING TAPE SPECIFICATIONS Thermistors on tape. P T D p p h h O d H H 1 W W 2 W 0 W 1 L A D 0 P 0 P 1 F direction of unreeling detail A t 1E pitch MSA208 DIMENSIONS OF TAPE IN ACCORDANCE WITH IEC SYMBOL PARAMETER DIMENSIONS (mm) VALUE TOLERANCE D body diameter (2) T maximum total thickness 3 d lead diameter 0.6 ±0.06 P pitch between thermistors 12.7 ±1 P 0 feed-hole pitch (cumulative pitch error ±0.2 mm/20 products) 12.7 ±0.3 P 1 feed-hole centre to lead centre 5.08 ±0.7 p component alignment 0 ±1.3 F lead-to-lead distance 2.54 ±0.3 h component alignment 0 ±2 W tape width /-0.5 W 0 hold-down tape width 12.5 W 1 feed-hole position 9.0 ±0.5 W 2 hold-down tape position 3 H component to tape centre 22 (1) ±1 H 1 component height 32 L length of snipped lead 11 D 0 feed-hole diameter 4.0 ±0.2 t total tape thickness with cardboard tape 0.5 ±0.1 mm 0.65 ±0.2 inspection level: S3 mechanical 1% Note 1. Taped products with H= 45±1, are available on request. 2. D 5 max for to Revision: 10-Oct-03

18 N Thermistors, Accuracy Line /4/6... Thermistors on tape. P T D p p h h 10 max W 2 O d W 1 L H 0 H W W 0 A D 0 F 2E pitch P 0 P 1 direction of unreeling detail A MSA209 t DIMENSIONS OF TAPE IN ACCORDANCE WITH IEC SYMBOL PARAMETER DIMENSIONS (mm) VALUE TOLERANCE D body diameter (1) T maximum total thickness (2) 3.2 d lead diameter 0.6 ±0.06 P pitch between thermistors 12.7 ±1 P 0 feed-hole pitch (cumulative pitch error ±0.2 mm/20 products) 12.7 ±0.3 P 1 feed-hole centre to lead centre 3.85 ±0.7 p component alignment 0 ±1.3 F lead-to-lead distance 2.54 ±0.3 h component alignment 0 ±2 W tape width /-0.5 W 0 hold-down tape width 12.5 W 1 feed-hole position /-0.5 W 2 hold-down tape position 3 H component to tape centre H 0 lead wire clinch height 16 ±0.5 L length of snipped lead 11 D 0 feed-hole diameter 4.0 ±0.3 t total tape thickness with cardboard tape 0.5 ±0.1 mm 0.7 ±0.2 inspection level: S3 mechanical 1% Note 1. D 5 max for to T 4 max for to Document Number: For technical questions contact: nlr.europe@vishay.com Revision: 10-Oct-03 87

19 N Thermistors, Accuracy Line REEL SPECIFICATIONS Dimensions of the reel CODE NUMBERS AND RELEVANT PACKAGING QUANTITIES PARAMETER BULK TAPE AND REEL (1) 1e pitch TAPE AND REEL (1) 2e pitch Quantity per reel, 2 reels per box 1500 per reel, 2 reels per box Note 1. The maximum number of empty places per reel shall not exceed 0.1% of the total number of components per reel. With no consecutive positions empty. CHARACTERISTICS OF TAPED PRODUCTS max. Minimum pull-out force of the component: 5 N. Minimum peel-off force of adhesive tape: 6N. Minimum tearing force tape: 15 N. Minimum pull-off force of tape-reel: 5 N STORAGE CONDITIONS Storage temperature range: 25 to +40 C. Maximum relative humidity: 80%. JW ±1 56 max TESTS AND REQUIREMENTS Essentially all tests are carried out in accordance with IEC publication ; Environmental testing, except where indicated. STABILITY TESTS CECC CLAUSE IEC TEST METHOD Notes 1. For 100 kω the drift requirement is R/R < 5%. 2. For from 2.2 kω to 10 kω, requirement is ±2% max. TEST PROCEDURE REQUIREMENTS D3; endurance 25 C; 1000 hours R/R < 1% 1 endurance 40 C; 1000 hours R/R < 1% 539 endurance 500 mw; 55 C; 1000 hours R/R < 3% (note 1) 2 dry heat, 125 C; 1000 hours R/R < 3% D1; damp heat 56 days at 40 C; 90 to 95% RH R/R < 3% C2; rapid change of temperature 40 C to +125 C; 50 cycles R/R < 2% Other applicable tests 21 robustness of leads: R/R 1% tensile strength loading force 10 N bending loading force 5 N 58 soldering: R/R 1% (note 2) solderability 240 C max.; duration 4 s max. resistance to heat 265 C max.; duration 5 s max. 27 impact free fall; 1 m R/R 1% 29 shock 490 m/s; half sinewave R/R 1% 45 resistance to solvent ambient temp for 5 min; no traces of lacquer on 6 vibration 1.5 mm peak to peak: 10 to 58 Hz no visible damage 2 inflammability 1980, needle flame test non-flammable 88 Revision: 10-Oct-03