Varistors MA3X028 Series (MA28 Series) Silicon epitaxial planar type Unit: mm For reduced voltage and temperature compensation 0.40+0.10 –0.05 0.16+0.10 –0.06 0.4±0.2 2 1 (0.95) (0.95) 1.9±0.1 (0.65) • Extremely small reverse current IR • High reliability with planar structure • Wide forward voltage VF range 5˚ 1.50+0.25 –0.05 ■ Features 2.8+0.2 –0.3 3 2.90+0.20 –0.05 Rating Unit VR 6 V Peak forward MA3X0280A/B current MA3X028WA/WB IFM 150 mA 1.1+0.2 –0.1 Parameter 0 to 0.1 Symbol Reverse voltage 1.1+0.3 –0.1 10˚ ■ Absolute Maximum Ratings Ta = 25°C 1: Anode 2: N.C. 3: Cathode Mini3-G1 Package 100 MA3X028TA/TB 70 EIAJ: SC-59 Power dissipation PD 150 mW Junction temperature Tj 125 °C Storage temperature Tstg −55 to +125 °C Marking Symbol • MA3X0280A • MA3X0280B • MA3X028WA • MA3X028WB • MA3X028TA • MA3X028TB : MD : ME : MF : MK : ML : MM ■ Electrical Characteristics Ta = 25°C ± 3°C *1 Parameter Symbol Forward voltage MA3X028WA/WB VF1 IF = 10 µA Conditions 0.77 VF2 IF = 1.5 mA 0.56 MA3X028TA/TB Forward voltage MA3X0280A Min Typ Max V 1.15 MA3X0280B 0.61 0.59 0.64 1.18 1.28 MA3X028WB 1.26 1.36 MA3X028TA 1.76 1.92 1.88 2.04 IF = 3 mA MA3X028WA MA3X028TB Reverse current MA3X0280A/B Temperature coefficient of MA3X028WA/B forward voltage *2 MA3X028TA/B Unit IR VR = 6 V −∆VF/∆T IF = 3 mA 1.0 2.0 V µA mV/°C 4.6 6.5 Note) 1. Measuring methods are based on JAPANESE INDUSTRIAL STANDARD JIS C 7031 measuring methods for diodes. 2. Absolute frequency of input and output is 100 MHz 3. *1: The temperature must be controlled 25°C for VF measurement. VF value measured at other temprature must be adjusted to VF (25°C). 2: T * j = 25°C to 150°C Note) The part numbers in the parenthesis show conventional part number. Publication date: March 2004 SKB00003CED 1 MA3X028 Series Characteristics charts of MA3X028 IF V F VF Ta 0.8 Ta = 25°C IF = 1.5 mA 10 Forward voltage VF (V) Forward current IF (mA) 102 1 MA3X0280A 10 −1 10 −2 0 0.2 MA3X0280B 0.4 0.6 0.8 0.6 MA3X0280B MA3X0280A 0.4 0.2 0 −40 1.0 0 40 80 120 Ambient temperature Ta (°C) Forward voltage VF (V) Characteristics charts of MA3X028W IF VF VF Ta 102 2.0 IF = 3 mA 10 1 MA3X028WB 10 −1 10 −2 0 0.4 0.8 1.2 1.6 Forward voltage VF (V) Forward current IF (mA) MA3X028WA 1.5 MA3X028WB 1.0 MA3X028WA 0.5 0 −40 2.0 Forward voltage VF (V) 0 40 80 120 Ambient temperature Ta (°C) Characteristics charts of MA3X028T IF VF 102 VF Ta 2.8 Ta = 25°C IF = 3 mA 2.4 10 Forward voltage VF (V) Forward current IF (mA) MA3X028TA 1 MA3X028TB 10 −1 MA3X028TB 2.0 1.6 MA3X028TA 1.2 0.8 0.4 10 −2 0 0.5 1.0 1.5 2.0 2.5 Forward voltage VF (V) 2 3.0 0 −40 0 40 80 120 Ambient temperature Ta (°C) SKB00003CED 160 Request for your special attention and precautions in using the technical information and semiconductors described in this material (1) An export permit needs to be obtained from the competent authorities of the Japanese Government if any of the products or technical information described in this material and controlled under the "Foreign Exchange and Foreign Trade Law" is to be exported or taken out of Japan. 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(6) When designing your equipment, comply with the guaranteed values, in particular those of maximum rating, the range of operating power supply voltage, and heat radiation characteristics. Otherwise, we will not be liable for any defect which may arise later in your equipment. Even when the products are used within the guaranteed values, take into the consideration of incidence of break down and failure mode, possible to occur to semiconductor products. Measures on the systems such as redundant design, arresting the spread of fire or preventing glitch are recommended in order to prevent physical injury, fire, social damages, for example, by using the products. (7) When using products for which damp-proof packing is required, observe the conditions (including shelf life and amount of time let standing of unsealed items) agreed upon when specification sheets are individually exchanged. (8) This material may be not reprinted or reproduced whether wholly or partially, without the prior written permission of Matsushita Electric Industrial Co., Ltd. 2003 SEP