STN878

STN878 Medium current, high performance, low voltage NPN transistor Features ■ ■ ■ ■ ■ Very low Collector to Emitter saturation voltage D.C. Current gain, hFE >100 5A continuous collector current SOT-223 plastic package for surface mounting circuits Available in tape & reel packing SOT-223 2 1 2 3 Applications ■ ■ ■ ■ Power management in portable equipment Voltage regulation in bias supply circuits Switching regulator in battery charger applications Heavy load driver Figure 1. Internal schematic diagram Description The device is manufactured in low voltage PNP planar technology with “base island” layout. the resulting transistor shows exceptional high gain performance coupled with very low saturation voltage. Table 1. Device summary Marking N878 Package SOT-223 Packaging Tape & reel Order code STN878 August 2007 Rev 1 1/10 www.st.com 10 Contents STN878 Contents 1 2 Electrical ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 2.1 2.2 Electrical characteristics (curves) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Test circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 3 4 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 2/10 STN878 Electrical ratings 1 Electrical ratings Table 2. Symbol VCBO VCEO VEBO IC ICM Ptot Tstg TJ Absolute maximum rating Parameter Collector-base voltage (IE = 0) Collector-emitter voltage (IB = 0) Emitter-base voltage (IC = 0) Collector current Collector peak current (tP < 5ms) Total dissipation at Tamb = 25°C Storage temperature Max. operating junction temperature Value 45 30 6 5 10 1.6 -65 to 150 150 Unit V V V A A W °C °C Table 3. Symbol Rthj-amb 1. Thermal data Parameter Thermal resistance junction-amb(1) __max Value 78 Unit °C/W Device mounted on PCB area of 1 cm2. 3/10 Electrical characteristics STN878 2 Electrical characteristics (Tcase = 25°C unless otherwise specified) Table 4. Symbol ICBO IEBO Electrical characteristics Parameter Collector cut-off current (IE =0) Emitter cut-off current (IC =0) Test conditions VCB = 30 V VCB = 30 V; VEB = 6 V TC = 100 °C Min. Typ. Max. 10 100 10 Unit µA µA µA Collector-emitter V(BR)CEO (1) breakdown voltage (IB =0) V(BR)CBO Collector-base breakdown voltage (IE =0) Emitter-base breakdown voltage (IC =0) IC = 10 mA 30 V IC = 100 µA 45 V V(BR)EBO IE = 100 µA IC = 0.5 A IC = 2 A IB = 5 mA IB = 50 mA IB = 0.25 A IB = 0.25 A IB = 0.4 A IB = 0.5 A IB = 50 mA IB = 0.25 A VCE = 1 V VCE = 1 V VCE = 1 V VCE = 1 V 6 0.15 0.35 0.7 0.7 1 1.2 1.1 1.2 120 100 70 200 200 100 100 VCE = 1 V VCE = 1 V 55 35 300 V V V V V V V V V VCE(sat) (1) Collector-emitter saturation voltage IC = 5 A IC = 6 A IC = 8 A IC = 10 A VBE(sat) (1) Base-emitter saturation voltage IC = 2 A IC = 6 A IC = 10 mA IC = 500 mA IC = 5 A hFE (1) DC current gain IC = 5 A Tc = 100 °C IC = 8 A IC = 10 A td tr ts tf Resistive load Delay time Rise time Storage time Fall time IC = 3 A see Figure 8 VCC = 20 V 180 160 250 80 220 210 300 100 ns ns ns ns IB1 = -IB2 = 60 mA 1. Pulsed duration = 300 ms, duty cycle ≤1.5 % 4/10 STN878 Electrical characteristics 2.1 Electrical characteristics (curves) Figure 2. DC current gain Figure 3. DC current gain Figure 4. Collector-emitter saturation voltage Figure 5. Base-emitter saturation voltage Figure 6. Switching time resistive load Figure 7. Switching time resistive load 5/10 Electrical characteristics STN878 2.2 Test circuits Figure 8. Resistive load switching test circuit 1) Fast electronic switch 2) Non-inductive resistor 6/10 STN878 Package mechanical data 3 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 7/10 Package mechanical data STN878 SOT-223 MECHANICAL DATA mm MIN. A B B1 c D e e1 E H V A1 0.02 3.30 6.70 0.60 2.90 0.24 6.30 0.70 3.00 0.26 6.50 2.30 4.60 3.50 7.00 3.70 7.30 10o 0.130 0.264 TYP. MAX. 1.80 0.80 3.10 0.32 6.70 0.024 0.114 0.009 0.248 0.027 0.118 0.010 0.256 0.090 0.181 0.138 0.276 0.146 0.287 10o MIN. inch TYP. MAX. 0.071 0.031 0.122 0.013 0.264 DIM. P008B 8/10 STN878 Revision history 4 Revision history Table 5. Date 21-Aug-2007 Document revision history Revision 1 Initial release. Changes 9/10 STN878 Please Read Carefully: Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any time, without notice. All ST products are sold pursuant to ST’s terms and conditions of sale. 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