Description
The CENTRAL SEMICONDUCTOR 1N5221B series silicon Zener diodes are highly reliable voltage regulators designed for use in industrial, mercial, entertainment and puter applications. MARKING: Devices shall either be marked with the prefix ‘C’ followed by the full part number or by the marking code in the DO-35 CASE Operating and Storage Junction Temperature VZ Tolerance: Part number with “B” suffix VZ Tolerance: Part number with “C” suffix VZ Tolerance: Part number with “D” suffix SYMBOL PD TJ, Tstg 500 -65 to +200 ±5 ±2 ±1 UNITS mW °C % % % TYPE 1N5221B 1N5222B 1N5223B 1N5224B 1N5225B 1N5226B 1N5227B 1N5228B 1N5229B 1N5230B 1N5231B 1N5232B 1N5233B 1N5234B 1N5235B 1N5236B 1N5237B 1N5238B 1N5239B 1N5240B 1N5241B 1N5242B 1N5243B 1N5244B 1N5245B 1N5246B ZENER VOLTAGE VZ @ IZT MIN NOM MAX V V V 2.280 2.4 2.520 2.375 2.5 2.625 2.565 2.7 2.835 2.660 2.8 2.940 2.850 3.0 3.150 3.135 3.3 3.465 3.420 3.6 3.780 3.705 3.9 4.095 4.085 4.3 4.515 4.465 4.7 4.935 4.845 5.1 5.355 5.320 5.6 5.880 5.700 6.0 6.300 5.890 6.2 6.510 6.460 6.8 7.140 7.125 7.5 7.875 7.790 8.2 8.610 8.265 8.7 9.135 8.645 9.1 9.555 9.500 10 10.50 10.45 11 11.55 11.40 12 12.60 12.35 13 13.65 13.30 14 14.70 14.25 15 15.75 15.20 16 16.80 TEST CURRENT MAXIMUM ZENER IMPEDANCE IZT ZZT @ IZT ZZK @ IZK mA Ω Ω mA 20 30 1200 0.25 20 30 1250 0.25 20 30 1300 0.25 20 30 1400 0.25 20 29 1600 0.25 20 28 1600 0.25 20 24 1700 0.25 20 23 1900 0.25 20 22 2000 0.25 20 19 1900 0.25 20 17 1600 0.25 20 11 1600 0.25 20 7.0 1600 0.25 20 7.0 1000 0.25 20 5.0 750 0.25 20 6.0 500 0.25 20 8.0 500 0.25 20 8.0 600 0.25 20 10 600 0.25 20 17 600 0.25 20 22 600 0.25 20 30 600 0.25 9.5 13 600 0.25 9.0 15 600 0.25 8.5 16 600 0.25 7.8 17 600 0.25 MAXIMUM REVERSE CURRENT IR @ VR μA V 100 1.0 100 1.0 75 1.0 75 1.0 50 1.0 25 1.0 15 1.0 10 1.0 5.0 1.0 5.0 2.0 5.0 2.0 5.0 3.0 5.0 3.5 5.0 4.0 3.0 5.0 3.0 6.0 3.0 6.5 3.0 6.5 3.0 7.0 3.0 8.0 2.0 8.4 1.0 9.1 0.5 9.9 0.1 10 0.1 11 0.1 12 MAXIMUM TEMPERATURE COEFFICIENT VZ %/°C -0.085 -0.085 -0.080 -0.080 -0.075 -0.070 -0.065 -0.060 ±0.055 ±0.030 ±0.030 +0.038 +0.038 +0.045 +0.050 +0.058 +0.062 +0.065 +0.068 +0.075 +0.076 +0.077 +0.079 +0.082 +0.082 +0.083 MARKING CODE C5221B C5222B C5223B C5224B C5225B C5226B C5227B C5228B C5229B C5230B C5231B C5232B C5233B C5234B C5235B C5236B C5237B C5238B C5239B C5240B C5241B C5242B C5243B C5244B C5245B C5246B R5 (8-May 2020) 1N5221B THRU 1N5278B SILICON ZENER DIODES 500mW, 2.4 THRU 170 VOLT 5% TOLERANCE - Continued: (TA=25°C) VF=1.2V MAX @ IF=200mA (for all types) TYPE ZENER VOLTAGE VZ @ IZT MIN NOM MAX V V V TEST CURRENT MAXIMUM ZENER IMPEDANCE IZT ZZT @ IZT ZZK @ IZK mA Ω Ω mA MAXIMUM REVERSE CURRENT IR @ VR μA V MAXIMUM TEMPERATURE COEFFICIENT VZ %/°C MARKING CODE 1N5247B 16.15 17 17.85 7.4 19 600 0.25 0.1 13 +0.084 C5247B 1N5248B 17.10 18 18.90 7.0 21 600 0.25 0.1 14 +0.085 C5248B 1N5249B 18.05 19 19.95 6.6 23 600 0.25 0.1 14 +0.086 C5249B 1N5250B 19.00 20 21.00 6.2 25 600 0.25 0.1 15 +0.086 C5250B 1N5251B 20.90 22 23.10 5.6 29 600 0.25 0.1 17 +0.087 C5251B 1N5252B 22.80 24 25.20 5.2 33 600 0.25 0.1 18 +0.088 C5252B 1N5253B 23.75 25 26.25 5.0 35 600 0.25 0.1 19 +0.089 C5253B 1N5254B 25.65 27 28.35 4.6 41 600 0.25 0.1 21 +0.090 C5254B 1N5255B 26.60 28 29.40 4.5 44 600 0.25 0.1 21 +0.091 C5255B 1N5256B 28.50 30 31.50 4.2 49 600 0.25 0.1 23 +0.091 C5256B 1N5257B 31.35 33 34.65 3.8 58 700 0.25 0.1 25 +0.092 C5257B 1N5258B 34.20 36 37.
