RL3720T-R018-F

DATA BOOK Thin Film Components Low R-Value Thin Film Chip Resistors SUSUMU CO.,LTD. Low R-Value Thin Film Chip Resistors(Resistor for current detection) Structure Protection film Resistance film Electrode Wrap around electrode Alumina substrate Features ▪ Excellent heat split structure (Patent No.2963671) and compact size for lowering surface temperature rising. ▪ A tight resistance tolerance of
1% and an excellent TCR of
100ppm/C assure current sensing accuracy. Specifications Dimension (mm) RL3720 L 3.75
0.30 3.75
0.30 7.50
0.30 7.50
0.30 W 2.00
0.20 2.00
0.20 2.00
0.20 2.00
0.20 P 0.40
0.20 0.40
0.20 0.40
0.20 0.40
0.20 T 0.40
0.10 0.400.15/0.10 0.40
0.10 0.40
0.15/0.10 Dimension (mm) RL0510 (0402) RL3720W RL7520 RL1220 (0805) RL1632 (1206) RL7520W L P W T RL3264 (2412) L 1.00
0.10 2.00
0.02 3.20
0.20 6.40
0.20 W 0.50
0.10 1.25
0.20 1.60
0.20 3.20
0.20 P 0.20
0.10 0.40
0.20 1.00
0.15 2.00
0.15 T 0.35
0.10 0.40
0.10 0.50
0.15 0.50
0.15 W P L T electric characteristics Type Power RL3720 RL3720W RL7520 1/2W 1W 1W 2W Resistance Tolerance
1%(F)
2%(G)
1%(F)
2%(G)
1%(F)
2%(G)
1%(F)
2%(G) (code) RL7520W Resistance range (ohm) 0.0220.075 0.12.2 0.0100.068 0.11.0 0.0100.075 0.11.0 5,6,9m 0.0100.068 0.10.47 Temperature Coefficient of Resistance (ppm/C) 0200 (S) 0350 (T) 0200 (S) 0350 (T) 0200 (S) 0420 (T) Resistance Values 0350 (T) E6 E6 Package RL0510 (0402) Type Power 1/8W Resistance Tolerance (code)
1%(F)
2%(G) RL1632 (1206) 1/4W 1/2W 1W 1% (F) % (F)
2%(G)
5%(J)
1%(F)
2%(G) 0.14.7 0.0220.068 0.110.0 Temperature Coefficient of Resistance (ppm/C) 0200 (S) 0350 0200 (T) (S)
100 (R) E12 E6 E6 10,000pcs/reel ▪ Please call for TCR's less than
100ppm/C Package ▪ Kevin four termination current sensor is available 0200 (S) E6 E6 4000pcs/reel RL1220 (0805) Referance range(ohm) Resistance Values 0350 (T) RL3264 (2412) 0.0680.47 0.0180.027 0.0330.047 0.0560.47 0.0180.027 0.0330.047 0.0560.47 0350 0200 (T) (S) E6 5000pcs/reel 100 (R) 0350 0200 (T) (S) E6
100 (R) Application Typically used with control IC for power supply protection circuits, charging/discharging control circuits of battery-packages, and motor control circuits. For power supply protection and motor control application (1) A protection circuit (2) To control the current and function Power supply: To control the charge or discharge current and stabilize load. Motor: To control the rotation speed, either steady or variable. protection circuits Load Re : Current sensor When loading current is low, current flows in direction 1. When loading current is increased to a certain level and turns Tr2 on, Tr1 current flows in direction 2 and turns off Tr1. 1 Let Re be 0.2 ohm: When I is 1 ampere, voltage between B and E is 0.2 volt. When I is 2 amperes, voltage between B and E is 0.4 volts. B Ι 2 Tr2 When I is 3 amperes, voltage between B and E is 0.6 volts and turns Tr2 on. Re E Compare to conventional type low ohmic chip resistors, the structure of this RL-series has higher thermal dissipation (patent No 2963671) rate, able to assure lower surface temperature rising and lower thermal effect on surrounding parts. Strongly recommended component. control circuit Rf A basic voltage-to-current converter Assume Vi is the input voltage on the current sensor, then output R1 R2 current Io could be formulated as follows: Ιo Rs Ι o input voltage Vi Load R3 ViRf R1Rs The output current is controllable and independent of load R. 15V Excellent initial characteristics, large heat dissipation, low temperature rise and excellent temperature characteristics assure high accuracy, contributing to longevity of battery packages. DATA Resistance Distribution n50 2.0 1.0 0.5 0 0.5 R10 2R2 1.0 4R7 Resistance tolerance (%) Resistance tolerance (%) 1.5 Assurance range n50 3.0 2.0 Assurance range Referance range 1.0 0 1.0 R10 R022 2.0 1.5 3.0 2.0 RL0510 RL1220 1R0 n50 1.5 1.0 Assurance range 0.5 0 R033 R068 R47 0.5 1.0 n50 2.0 Resistance tolerance (%) Resistance tolerance (%) 2.0 1.5 1.0 Assurance range 0.5 0 R033 1.0 1.5 1.5 2.0 2.0 RL1632 RL3264 n50 1.5 Assurance range 0.5 0 0.5 R01 R022 1R0 1.0 n50 2.0 Resistance tolerance (%) Resistance tolerance (%) 2.0 1.0 R47 R068 0.5 1.5 1.5 1.0 Assurance range 0.5 0 0.5 R005 R10 R01 1.0 1.5 2.0 2.0 RL3720,RL3720W RL7520,RL7520W R005 is for RL7250W only n50 300 200 Assurance range R10 100 2R2 4R7 0 Temperature Coefficicient of Resistance (ppm/C) Temperature Coefficicient of Resistance (ppm/C) Temperature Coefficicient of Resistance Distribution 100 n50 300 Assurance range 200 100 0 Assurance range 100 200 n50 Assurance range Assurance range R033 R068 0 100 200 RL1632 R47 Temperature Coefficicient of Resistance (ppm/C) Temperature Coefficicient of Resistance (ppm/C) RL1220 300 100 1R0 R10 Low TCR RL0510 200 R10 n50 300 200 100 Assurance range Assurance range R033 R068 0 100 200 RL3264 R47 Temperature Coefficicient of Resistance (ppm/C) Temperature Coefficicient of Resistance (ppm/C) n50 400 Assurance range (Guaranteed range) 350 300 250 Assurance range (Guaranteed range) 200 R022 150 100 R01 1R0 50 0 50 450 n50 Assurance range (Guaranteed range) 400 Assurance range (Guaranteed range) 350 300 R005 250 Assurance range (Guaranteed range) 200 150 R01 100 R10 50 0 50 RL7520,RL7520W RL3720,RL3720W R005 is for RL7250W only Pad size (S)WL Dimension W 200 180 Chip resistance 160 Dimension L (27mm) 140 120 apply 1 watt 100 land patterns 80 60 apply 0.75 watt 40 apply 0.5 watt 20 0 0 5 10 15 20 25 Dimension W (mm) Differential increase in surface temperature (C) RL3720W(Rated 1W) 300 Dimension W (4.15mm) 250 apply 0.5 watt 200 Chip resistance 150 Dimension L land patterns apply 0.25 watt 100 50 0 0 10 RL3720W(Rated 0.5W) Differential increase in surface temperature (C) 220 20 30 Dimension L (mm) 220 Dimension W Pad size (S)WL 200 Chip resistance 180 160 Dimension L (27mm) land patterns 140 apply 2 watt 120 100 80 apply 1 watt 60 40 apply 0.5 watt 20 0 0 5 10 15 20 25 Dimension W (mm) RL7520W(Rated 2W) Differential increase in surface temperature (C) Differential increase in surface temperature (C) This low resistance chip resistor is designed to have better heat (generated by resistor) dissipation rate than the copper pad on board, therefor surface temperature rising on the resistor depends on the pad's on PC board. 300 Dimension W (7.9mm) 250 200 150 apply 1 watt apply 0.75 watt apply 0.5 watt Chip resistance Dimension L land patterns 100 apply 0.25 watt 50 0 0 10 RL7520(Rated 1W) 20 30 Dimension L (mm)  Apply a pulse to a sample resistor and measure the rate of resistance change. Raise the voltage gradually until the rate of resistance change exceeds 0.5%. The threshold pulse voltage is defined as the upper limit voltage to hold the rate of resistance change within 60.5%. Low ohmic resistor receive internally the effects of thermal electromotive force. We minimize the effects of thermal electromotive force of our low ohmic resistors through thin film technology. The effect of thermal electromotive power could be detected by measuring polarization of its resistance values. 200 Changes in resistance value () RL7520W-R10 RL7520-R10 150 Limit voltage (W) Sample:RL7520-R10-F 0.02 100 RL3264-R050 RL3720-R075 RL1632-R050 50 RL1220-R10 0 0.001 0.01 0.1 pulse width (sec) 1 10 0.015 0.01 0.005 3A 25C 0 0.005 0.01 0.015 0.02 2A 70C 2A 0C 3A 70C 3A 0C 2A 25C resistance polarization Reliability Test DATA Compared with general-purpose resistors, low resistance resistors are more often used in high temperature environment and high power applications where the amount of heat is high. High reliability is necessary. Susumu's low ohmic resistors have excellent reliability of less than 0.01fit. Load Life Test Test conditons:70C Apply rated voltage for 90 minutes followed by 30 minute intermission. This cycle is repeated for 1,000 hours. Ta70C Sample:RL7520WT-R033-F (n20pcs) Ta70C Sample:RL1220T-R022-J (n20pcs) 1.0 Referance change (%) Referance change (%) 1.0 0.0 1.0 10 100 1000 10000 0.0 1.0 10 100 1000 10000 Time (hrs) Time (hrs) Moisture Load Life Test Test conditons:40C,95%RH Ta40C,95%RH Sample:RL1220T-R068-J (n20pcs) 1.0 Referance change (%) Referance change (%) 1.0 Apply rated voltage for 90 minutes followed by 30 minute intermission. This cycle is repeated for 1,000 hours. Ta40C,95%RH Sample:RL7520WT-R022-F (n20pcs) 0.0 1.0 10 100 1000 Time (hrs) 10000 0.0 1.0 10 100 1000 Time (hrs) 10000 Recommended land patterns Recommended land patterns Board thickness:1.6mm,Board material:glass fabric epoxy resin,Copper film thickness:0.035mm Solder resist coating land Solder resist coating land Chip resistor Chip resistor 0.7 2.4 0.6 1.0 1.9 4.0 RL0510 Recommended land pattern land Terminal for voltage measurement Chip resistor 0.5 RL1220 Recommended land pattern Terminal for voltage measurement Chip resistor 0.5 land Solder resist coating 1.7 Solder resist coating 3.3 1.1 2.3 4.7 7.9 RL1632 Recommended land pattern RL3264 Recommended land pattern Long-side electrode type Recommended land patterns land voltage measurement line Solder resist coating c b a RL3720 RL3720W RL7520 RL7520W a b c d 27.0 27.0 27.0 27.0 4.0 4.0 4.0 4.0 1.2 1.2 1.2 1.2 4.2 7.9 7.9 15.8 dimension:mm d chip Resistor