MMBTA42 Small signal NPN transistor Features ■ Miniature SOT-23 plastic package for surface mounting circuits ■ Tape and reel packaging ■ The PNP complementary type is MMBTA92 Applications ■ Video amplifier circuits (rgb cathode current control) ■ Telephone wireline interface (hook switches, dialer circuits) Description SOT-23 Figure 1. Intenal schematic diagram The device is manufactured in Epitaxial Planar technology. Table 1. Device summary Order code Marking Package Packaging MMBTA42 A42 SOT-23 tape and reel November 2007 Rev 3 1/8 www.st.com 8 Electrical characteristics 1 MMBTA42 Electrical characteristics (Tcase = 25°C unless otherwise specified) Table 2. Absolute maximum rating Symbol Unit Collector-base voltage (IE = 0) 300 V VCEO Collector-emitter voltage (IB = 0) 300 V VEBO Emitter-base voltage (IC = 0) 6 V Collector current 0.5 A ICM Collector peak current (tP < 5ms) 0.6 A Ptot Total dissipation at Tamb = 25°C 350 mW Tstg Storage temperature -65 to 150 °C 150 °C Value Unit 357.1 °C/W TJ Table 3. Symbol Rthj-amb 2/8 Value VCBO IC 1. Parameter Max. operating junction temperature Thermal data Parameter Thermal resistance junction-ambient (1)__max Device mounted on PCB area of 1 cm 2. MMBTA42 2 Electrical characteristics Electrical characteristics (Tcase = 25°C unless otherwise specified) Table 4. Symbol ICBO V(BR)CBO Electrical characteristics Parameter Test conditions Min. Typ. Max. Unit 100 nA Collector cut-off current (IE =0) VCB = 200 V Collector-base breakdown voltage (IE =0) IC = 100 µA 300 V IC = 1 mA 300 V 6 V Collector-emitter V(BR)CEO(2) breakdown voltage (IB =0) V(BR)EBO Emitter-base breakdown voltage (IC =0) IC = 100 µA VCE(sat) (2) Collector-emitter saturation voltage IC = 20 mA IB = 2 mA 0.5 V VBE(sat) (2) Base-emitter saturation voltage IC = 20 mA IB = 2 mA 0.9 V DC current gain IC = 1 mA IC = 10 mA IC = 30 mA VCE = 10 V VCE = 10 V VCE = 10 V IC = 10 mA VCE = 20 V hFE (2) fT CCBO Transition frequency Collector-base capacitance (IE = 0) f = 100 MHz VCB = 20 V f = 1 MHz 25 40 40 50 MHz 3 pF Note (2) Pulsed duration = 300 µs, duty cycle ≤1.5% 3/8 Package mechanical data 3 MMBTA42 Package mechanical data In order to meet environmental requirements, ST offers these devices in ECOPACK® packages. These packages have a Lead-free second level interconnect. The category of second level interconnect is marked on the package and on the inner box label, in compliance with JEDEC Standard JESD97. The maximum ratings related to soldering conditions are also marked on the inner box label. ECOPACK is an ST trademark. ECOPACK specifications are available at: www.st.com 4/8 MMBTA42 Package mechanical data SOT-23 mechanical data mm. DIM. min. typ max. A 0.89 1.4 A1 0 0.1 B 0.3 0.51 C 0.085 0.18 D 2.75 3.04 e 0.85 1.05 e1 1.7 2.1 E 1.2 1.6 H 2.1 2.75 L S 0.6 0.35 0.65 0053390_G 5/8 Package mechanical data Figure 2. 6/8 SOT-23 footprint MMBTA42 MMBTA42 4 Revision history Revision history Table 5. Document revision history Date Revision 06-Jan-2003 2 08-Nov-2007 3 Changes Updated mechanical data. 7/8 MMBTA42 Please Read Carefully: Information in this document is provided solely in connection with ST products. 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The ST logo is a registered trademark of STMicroelectronics. All other names are the property of their respective owners. © 2007 STMicroelectronics - All rights reserved STMicroelectronics group of companies Australia - Belgium - Brazil - Canada - China - Czech Republic - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan Malaysia - Malta - Morocco - Singapore - Spain - Sweden - Switzerland - United Kingdom - United States of America 8/8