PHOTOTRANSISTOR OPTOCOUPLER MCT4 PACKAGE DIMENSIONS 0.230 (5.84) 0.209 (5.31) 0.195 (4.96) 0.178 (4.52) 0.210 (5.34) 0.170 (4.32) 0.560 (14.22) 0.500 (12.70) SCHEMATIC 0.100 (2.54) DIA. 3 0.048 (1.22) 0.028 (0.71) 4 2 1 ANODE 1 2 COLLECTOR 0.019 (0.48) Ø 4X 0.016 (0.41) 0.046 (1.16) 0.036 (0.92) 45° CATHODE 3 4 EMITTER NOTES: 1. Dimensions for all drawings are in inches (mm). 2. Tolerance of ± .010 (.25) on all non-nominal dimensions unless otherwise specified. DESCRIPTION The MCT4 is a standard four-lead, TO-18 package containing a GaAs infrared emitting diode optically coupled to an NPN silicon planar phototransistor. FEATURES • Hermetically package • High current transfer ratio; typically 35% • High isolation resistance; 1011 ohms at 500 volts • High voltage isolation emitter to detector 2001 Fairchild Semiconductor Corporation DS300241 8/13/01 1 OF 6 www.fairchildsemi.com PHOTOTRANSISTOR OPTOCOUPLER MCT4 ABSOLUTE MAXIMUM RATINGS Parameter (TA = 25°C unless otherwise specified) Symbol Rating Unit TOPR TSTG TSOL-F -55 to +125 -65 to +150 260 for 10 sec °C °C °C 90 40 mW mA Operating Temperature Storage Temperature Soldering Temperature (Flow) EMITTER Power Dissipation at 25°C Ambient PD (1) Continuous Forward Current IF Reverse Voltage Forward Current - Peak (1 µs pulse, 300 pps) VR 3 V IF(pk) 3.0 A 200 30 7 mW V V 250 1000 mW VDC DETECTOR Power Dissipation 25°C Ambient Collector to Emitter Voltage Emitter to Collector Voltage COUPLER Total Power Dissipation Isolation Voltage PD (2) VCEO VECO PD (3) ELECTRICAL / OPTICAL CHARACTERISTICS (TA =25°C) INDIVIDUAL COMPONENT CHARACTERISTICS Parameters Test Conditions Symbol IF = 40 mA Min Typ Max Units VF 1.30 1.50 V VR = 3.0 V V=0V IR 0.15 10 µA C 150 Collector to Emitter IC = 1.0 mA, IF = 0 BVCEO 30 Emitter to Collector IE = 100 µA, IF = 0 BVECO 7 VCE = 10 V, IF = 0 ICEO 5 VCE = 0 CCE 2 EMITTER Forward Voltage Reverse Current Capacitance DETECTOR pF Breakdown Voltage V 12 V Leakage Current Collector to Emitter 50 Capacitance Collector to Emitter nA pF NOTE: 1. Derate power linearly 1.2 mW/°C above 25°C 2. Derate power linearly 2.67 mW/°C above 25°C 3. Derate power linearly 3.3 mW/°C above 25°C www.fairchildsemi.com 2 OF 6 8/13/01 DS300241 PHOTOTRANSISTOR OPTOCOUPLER MCT4 TRANSFER CHARACTERISTICS DC Characteristics COUPLED DC current Transfer Ratio (note 1) Saturation Voltage Test Conditions Symbol Min Typ VCE = 10 V, IF = 10 mA CTR 15 35 IC = 500 µA, IF = 10 mA IC = 2 mA, IF = 50 mA AC Characteristics Test Conditions Capacitance LED to Detector Bandwidth (Fig. 5) Rise Time and Fall Time (see operating schematic) (TA = 25°C Unless otherwise specified.) Min Note 2 IC = 2 mA, VCE = 10 V, Note 3 Units % 0.1 VCE(SAT) Symbol Max 0.2 0.5 Typ Max V Units 1.8 pF 300 2 kHz µs ISOLATION CHARACTERISTICS Characteristic Isolation Resistance Breakdown Voltage Test Conditions V = 500 VDC Time = 1 sec Symbol Min Typ RISO 1011 1012 Max Units ! 1000 1500 VDC NOTE: 1. The current transfer ratio (IC/IF) is the ratio of the detector collector current to the LED input current with VCE at 10 volts. 2. The frequency at which ic is 3 dB down from the 1 kHz value. 3. Rise time (tr) is the time required for the collector current to increase from 10% of its final value, to 90%. Fall time (tf) is the time required for the collector current to decrease from 90% of its initial value to 10%. DS300241 8/13/01 3 OF 6 www.fairchildsemi.com PHOTOTRANSISTOR OPTOCOUPLER Figure 1. Detector Output Characteristics Figure 2. Input Current vs. Output Current 20 20 25 IC, COLLECTOR CURRENT DETECTOR (mA) IC, COLLECTOR CURRENT DETECTOR (mA) MCT4 IF = 60 mA 20 IF = 40 mA 15 10 IF = 20 mA 5 IF = 10 mA 5 10 15 20 25 25 VCE = 10 VOLTS 20 15 10 5 0 30 0 Figure 3. Dark Current vs. Temperature 40 50 60 Figure 4. Current Output vs. Temperature 110 10-5 100 10-6 90 CTR, NORMALIZED (%) ICEO, DARK CURRENT (A) 30 IF, INPUT CURRENT LED (mA) 10-4 VCE = 10 VOLTS 10-7 10-8 10-9 10-10 LED CURRENT - 10 mA VCE = 10 VOLTS FREE STANDING DEVICE 80 70 60 50 40 10-11 10-12 -60 20 10 VCE, COLLECTOR VOLTAGE DETECTOR (V) -40 -20 0 20 40 30 -60 60 80 100 120 140 TA, AMBIENT TEMPERATURE (°C) -40 -20 0 20 40 60 80 100 TA, AMBIENT TEMPERATURE (°C) Figure 5. Output vs. Frequency Figure 6. Switching Time vs. Collector Current 2.0 1.8 1.6 RL= VCE = 10 VOLTS Ω 1.2 12 RL= 1.0 SWITCHING TIME (µs) Ω 470 0.8 RL= COLLECTOR CURRENT (mA) VCE = 10 VOLTS 100 1.4 1000 0.6 6 RL = 470 Ω Ω RL = 100 Ω 2 0.2 10K 100K 0.1 1 0.2 0.3 0.4 0.6 0.8 1 2 3 4 5 6 7 8 10 IC, COLLECTOR CURRENT (mA) FREQUENCY (Hz) www.fairchildsemi.com RL = 1000 Ω 8 4 0.4 1K 10 4 OF 6 813/01 DS300241 PHOTOTRANSISTOR OPTOCOUPLER MCT4 MODULATION INPUT 1 µF 47 Ω LED CONSTANT CURRENT INPUT λ IC VCC = 10 VOLTS PULSE INPUT LED DETECTOR IC 47 Ω λ VCC = 10 VOLTS DETECTOR PULSE OUTPUT OUTPUT IF IF RL = 100 Ω Figure 7. Modulation Circuit Used to Obtain Output vs. Frequency Plot DS300241 8/13/01 RL = 100 Ω Figure 8. Circuit Used to Obtain Switching Time vs. Collector Current Plot 5 OF 6 www.fairchildsemi.com PHOTOTRANSISTOR OPTOCOUPLER MCT4 DISCLAIMER FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION OR DESIGN. FAIRCHILD DOES NOT ASSUME ANY LIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCT OR CIRCUIT DESCRIBED HEREIN; NEITHER DOES IT CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS. LIFE SUPPORT POLICY FAIRCHILD’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD SEMICONDUCTOR CORPORATION. As used herein: 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body,or (b) support or sustain life, and (c) whose failure to perform when properly used in accordance with instructions for use provided in labeling, can be reasonably expected to result in a significant injury of the user. www.fairchildsemi.com 2. A critical component in any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness. 6 OF 6 8/13/01 DS300241