Varistors MA2B027 Series Silicon epitaxial planar type variable resistor For temperature and reduced voltage compensation Unit : mm φ 0.56 max. ■ Features • High reliability achieved through combination of a planar type chip and glass sealing structure • Easy mounting because of employing DO-35 (DHD) envelope • Extremely small reverse current IR • Large power dissipation • Wide forward voltage VF range 1 4.5 max. 24 min. COLORED BAND INDICATES CATHODE Symbol Rating Unit Reverse voltage (DC) Parameter VR 6 V MA2B0270A/B Forward current (DC) MA2B027WA/WB IFM 150 mA 24 min. ■ Absolute Maximum Ratings Ta = 25°C 100 MA2B027TA/TB 70 MA2B027QA/QB 50 2 φ 1.95 max. Power dissipation PD 150 mW Junction temperature Tj 150 °C Storage temperature Tstg −55 to +150 °C 1：Cathode 2：Anode JEDEC：DO-35 ■ Electrical Characteristics Ta = 25°C Parameter Reverse current (DC) Forward voltage (DC) Forward voltage (DC) Temperature coefficient of forward voltage Symbol MA2B0270A/B MA2B027WA/WB MA2B027TA/TB MA2B27QA/QB MA2B0270A MA2B0270B MA2B027WA/WB MA2B027TA/TB MA2B027QA/QB MA2B0270A/B MA2B027WA MA2B027WB MA2B027TA MA2B027TB MA2B027QA MA2B027QB MA2B0270A/B MA2B027WA/WB MA2B027TA/TB MA2B027QA/QB IR VF1 Conditions IF = 1.5 mA −∆VF/∆T Typ 0.56 0.59 0.77 1.15 1.60 IF = 10 µA VF2 Min VR = 6 V VR = 6 V IF = 50 mA IF = 3 mA 1.18 1.26 1.76 1.88 2.20 2.34 IF = 1.5 mA IF = 3 mA 2.0 4.6 6.5 8.8 Max Unit 10 1 µA 0.61 0.64 V 1.1 1.28 1.36 1.92 2.04 2.40 2.54 V mV/°C Note) Rated input/output frequency: 100 MHz ■ Cathode Indication Type No. MA2B0270A Color Yellow MA2B0270B MA2B027WA MA2B027WB Blue Light Blue Brown MA2B927TA* MA2B027TB* MA2B027QA* MA2B027QB* Yellow Blue Green Brown Note) * : Body Color ; Black 1 MA2B027 Series Varistors Characteristics charts of MA2B027 Characteristics charts of MA2B027Q IF V F VF Ta 1 000 Ta = 25°C MA2B0270B 1 0.1 0.01 0.6 Forward current IF (mA) MA2B0270A 10 Ta = 25°C IF = 1.5 mA 0.8 Forward voltage VF (V) Forward current IF (mA) 100 IF V F 100 1.0 MA2B0270B MA2B0270A 0.4 MA2B027QA 10 MA2B027QB 1 0.1 0.2 0 0.2 0.4 0.6 0.8 0 −40 1.0 Forward voltage VF (V) 0.01 0 40 80 120 160 0 1 2 3 4 Forward voltage VF (V) Ambient temperature Ta (°C) Characteristics charts of MA2B027W IF VF 1 000 VF Ta VF Ta 2.0 Ta = 25°C 3.2 IF = 3 mA IF = 3 mA 2.8 MA2B027WA 10 MA2B027WB 1 0.1 1.2 MA2B027WB MA2B027WA 0.8 Forward voltage VF (V) 1.6 Forward voltage VF (V) Forward current IF (mA) 100 2.4 2.0 MA2B027QB 1.6 1.2 MA2B027QA 0.8 0.4 0.4 0.01 0 0.4 0.8 1.2 1.6 2.0 0 −40 2.4 Forward voltage VF (V) 0 40 80 120 160 Ambient temperature Ta (°C) IF VF IF = 3 mA MA2B027TA 10 2.0 MA2B027TB Forward voltage VF (V) Forward current IF (mA) VF Ta 2.5 Ta = 25°C 1 0.1 MA2B027TA 1.5 MA2B027TB 1.0 0.5 0.01 0 1 2 3 Forward voltage VF (V) 2 4 0 −40 0 40 80 120 Ambient temperature Ta (°C) 0 40 80 120 Ambient temperature Ta (°C) Characteristics charts of MA2B027T 100 0 −40 160 160