GTM CORPORATION GMBZ5251B
ZENER DIODES
DESCRIPTION
ZENER DIODES Package Dimensions REF A B C D E F Millimeter Min. Max. 2.70 3.10 2.40 2.80 1.40 1.60 0.35 0.50 0 0.10 0.45 0.55 REF. G H K J L M Millimeter Min. Max. 1.90 REF. 1.00 1.30 0.10 0.20 0.40 0.85 1.15 0 10 Thermal Characteristics Characteristics Total Device Dissipation FR-5 Board Ta=25 , Derate above 25 Symbol PD PD R JA Tj,Tstg Max 225 1.8 300 2.4 417 -55 to +150 Unit mW mW/ mW mW/ /W Total Device Dissipation Alumina Substrate**TA=25 , Derate above 25 Thermal Resistance Junction to Ambient Junction and Storage Temperature *FR-5 1.0 0.75 0.062 in. **Alumina-0.4 0.3 0.024 in. 99.5% alumina. Device Thermal Characteristics Type Code 18A 18B - (VF=0.9V Max @IF=10mA for all types.) Test Zener Voltage Current Vz(V) IZT(mA) Min Nominal Max 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 2.280 2.375 2.565 2.66 2.850 3.135 3.420 3.705 4.085 4.465 4.845 5.320 5.700 5.890 6.460 7.125 7.790 2.4 2.5 2.7 2.8 3.0 3.3 3.6 3.9 4.3 4.7 5.1 5.6 6.0 6.2 6.8 7.5 8.2 2.520 2.625 2.83...