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| SURFACE MOUNT ZENER DIODE COMCHIP www.comchip.com.tw CZRA4741 - CZRA4764 Voltage: 11- 100 Volts Power: 1.0 Watts FEATURES - For surf ace mounted applications in order to optimize board space - Low profile package - Built-in strain relief - Glass passiv ated junction - Low inductance - Typical IR less than 5.0uUA above 11V - High temper ature soldering : 260C / 10 seconds at terminals - Plastic package has Underwriters Laboratory Flammability Classification 94V-O DO-214AC (SMA) 0.067(1.70) 0.051(1.29) 0.180(4.57) 0.160(4.06) 0.110(2.79) 0.086(2.18) 0.012(0.31) 0.006(0.15) 0.091(2.31) 0.067(1.70) 0.059(1.50) 0.035(0.89) 0.008(0.20) 0.004(0.10) MECHANICAL DATA Case: JEDEC DO-214AC, Molded plastic over passivated junction Terminals: Solder plated, solderable per MIL-STD-750, method 2026 Polarity: Color band denotes positive end(cathode) Standard Packaging: 12mm tape(EIA-481) Weight: 0.002 ounce, 0.064 gram 0.209(5.31) 0.185(4.70) Dimensions in inches and (millimeters) Maximum Ratings and Electrical Characterics Ratings at 25C ambient temperature unless otherwise specified. Peak Pulse Power Dissipation on TA= 50C (Note A) Derate above 50C Peak forward Surge Current 8.3ms single half sine-wave superimposed on rated load(JEDEC Method) (Note B) Operating Junction and Storage Temperature Range NOTES: 2 A. Mounted on 5.0mm (.013mm thick) land areas. B. Measured on 8.3ms, single half sine-wave or equivalent square wave, duty cycle = 4 pulses per minute maximum. SYMBOL PD IFSM TJ,TSTG VALUE 1.0 6.67 10 -55 to +150 UNITS Watts mW/C Amps C MDS0208021A Page 1 SURFACE MOUNT ZENER DIODE COMCHIP www.comchip.com.tw ELECTRICAL CHARACTERISTICS (TA=25C unless otherwise noted) (V F=1.2Volts Max, IF=200mA for all types.) Device (Note 1.) Nominal Zener Voltage VZ @ IZT (Note 2, 3) (Volts) Test current IZT (mA) Maximum Zener Impedance (Note 4) ZZT @ IZT ZZK @ IZK (Ohms) (Ohms) Leakage Current IR (uA) Surge Current @TA=25C (Note 5) Ir - mA IZK (mA) VR (Volts) CZRA4741 CZRA4742 CZRA4743 CZRA4744 CZRA4745 CZRA4746 CZRA4747 CZRA4748 CZRA4749 CZRA4750 CZRA4751 CZRA4752 CZRA4753 CZRA4754 CZRA4755 CZRA4756 CZRA4757 CZRA4758 CZRA4759 CZRA4760 CZRA4761 CZRA4762 CZRA4763 CZRA4764 NOTE: 11 12 13 15 16 18 20 22 24 27 30 33 36 39 43 47 51 56 62 68 75 82 91 100 23 21 19 17 15.5 14 12.5 11.5 10.5 9.5 8.5 7.5 7 6.5 6 5.5 5 4.5 4 3.7 3.3 3 2.8 2.5 8 9 10 14 16 20 22 23 25 35 40 45 50 60 70 80 95 110 125 150 175 200 250 350 700 700 700 700 700 750 750 750 750 750 1000 1000 1000 1000 1500 1500 1500 2000 2000 2000 2000 3000 3000 3000 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 8.4 9.1 9.9 11.4 12.2 13.7 15.2 16.7 18.2 20.6 22.8 25.1 27.4 29.7 32.7 35.8 38.8 42.6 47.1 51.7 56 62.2 69.2 76 414 380 344 304 285 250 225 205 190 170 150 135 125 115 110 95 90 80 70 65 60 55 50 45 1. Tolerance and Type Number Designation. The type numbers listed have a standard tolerance on the nominal zener voltage of 5%. 2. Specials Available Include: A. Nominal zener voltages between the voltages shown and tighter voltage tolerances. B. Matched sets. 3. Zener Voltage (VZ) Measurement. Guarantees the zener voltage when measured at 90 seconds while maintaining the lead temperature (TL) at 30C 1C, from the diode body. 4. Zener Impedance (ZZ) Derivation. The zener impedance is derived from the 60 cycle ac voltage, which results when an ac current having an rms value equal to 10% of the dc zener current (I ZT or IZK) is superimposed on IZT or IZK. 5. Surge Current (Ir) Non-Repetitive. The rating listed in the electrical characteristics table is maximum peak, non-repetitive, reverse surge current of 1/2 square wave or equivalent sine wave pulse of 1/120 second duration superimposed on the test current, I ZT, per JEDEC registration; however, actual device capability is as described in Figure 5. MDS0208021A Page 2 SURFACE MOUNT ZENER DIODE RATING AND CHARACTERISTICS CURVES CZRA4741 THRU CZRA4764 PD, MAXIMUM POWER DISSIPATION (WATTS) COMCHIP www.comchip.com.tw 1.25 1.0 0.75 0.50 0.25 0 0 L = LEAD LENTGH TO HEAT SINK 20 40 60 80 100 120 140 160 180 200 TL, LEAD TEMPERATURE Fig. 1-POWER TEMPERATURE DERATING CURVE VZ, TEMPERATURE COEFFICIENT (mV/C) 100 VZ, TEMPERATURE COEFFICIENT(mV/W) 70 50 30 20 10 7.0 5.0 3.0 2.0 1.0 10 RANGE VZ @ IZT +12 +10 +8.0 +6.0 +4.0 +2.0 0 -2.0 -4.0 2 VZ @ IZT RANGE 3 4 5 6 7 8 9 10 11 12 20 30 50 70 100 VZ, ZENER VOLTAGE (VOLTS) VZ, ZENER VOLTAGE (VOLTS) Fig. 2-TEMPERATURE COEFFICIENTS (-55C TO +150C TEMPERATURE RANGE; 90% OF THE UNITS ARE IN THE RANGES INDICATED.) 175 JL, JUNCTION TO LEAD THERMAL RESISTANCE (C/W) 150 125 100 75 50 25 0 0 .1 .2 .3 .4 .5 .6 .7 .8 .9 1.0 VZ, TEMPERATURE COEFFICIENT (mV/w) +6.0 +4.0 NOTE:BELOW 3 VOLTS AND ABOVE 8 CHANGES IN ZENER CURRENT DO AFFECT TEMPERATURE 20mA +2.0 0 -2.0 -4.0 3 1.0mA 0.01mA VZ @ IZT TA = 25C 6 7 8 4 5 L, LEAD LENGTH TO HEAT SINK (INCKES) VZ, ZENER VOLTAGE (VOLTS) Fig.3-TYPICAL THERMAL RESISTANCE VERSUS LEAD LENGTH Fig. 4-EFFECT OF ZENER CURRENT MDS0208021A Page3 SURFACE MOUNT ZENER DIODE COMCHIP www.comchip.com.tw RATING AND CHARACTERISTICS CURVES CZRA4741 THRU CZRA4764 Ppk, peak surge power (watts) 100 70 50 5% DUTY CYCLE 30 20 10 7.0 5.0 3.0 2.0 1.0 0.01 20% DUTY CYCLE 10% DUTY CYCLE 11V-91V NON-REPETITIVE 0.8V-10V NON-REPETITIVE RECTANGULAR WAVEFORM TJ = 25C PRIOR TO INITIAL PULSE 0.02 0.05 0.1 0.2 0.5 1.0 2.0 5.0 10 20 50 100 200 500 PW, PULSE WIDTH This graph represents 90 percentile data point. For worst-case design characteristics, multiply surge power by 2/3 Fig. 5-MAXIMUM SURGE POWER 1000 1000 700 500 I = 1.0mA Z 200 100 5.0mA 70 50 20mA 20 10 7 5 2 1 1.0 Zz, dynamic impedance (ohms) Zz, dynamic impedance (ohms) 500 200 100 50 20 10 5.0 TJ = 25C IZ(ms) = 0.1IZ(dc) f = 60Hz TJ = 25C IZ(ms) = 0.1IZ(dc) f = 60Hz 47V 27V 0.8V 2.0 1.0 0.1 0.2 0.5 1.0 2.0 5.0 10 20 50 100 2.0 3.0 5.0 7.0 10 20 30 50 70 100 IZ, ZENER CURRENT (mA) IZ, ZENER CURRENT (mA) Fig. 6-EFFECT OF ZENER CURRENT ON ZENER IMPEDANCE Fig. 7-EFFECT OF ZENER VOLTAGE ON ZENER IMPEDANCE MDS0208021A Page 4 |
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