STD878 STN878 High current, high performance, low voltage NPN transistors Features ■ Very low collector to emitter saturation voltage ■ DC current gain, hFE >100 4 4 ) s ■ 5 A continuous collector current ( 3 t c 3 2 Applications 1 u 1 d o ■ Power management in portable equipment r P ■ Voltage regulation in bias supply circuits SOT-223 DPAK e ■ Switching regulator in battery charger t e applications l o ■ Heavy load driver s Fbigure 1. Internal schematic diagram O Description - The devices are manufactured in low voltage) NPN s planar technology with “base island” (layout. the t resulting transistor shows exceptiocnal high gain performance coupled with veryu low saturation d voltage. o r P e t e l o s b O Table 1. Device summary Order codes Markings Packages Packaging STD878T4 D878 DPAK Tape and reel STN878 N878 SOT-223 Tape and reel August 2010 Doc ID 13836 Rev 2 1/10 www.st.com 10

Electrical ratings STD878, STN878 1 Electrical ratings Table 2. Absolute maximum ratings Symbol Parameter Value Unit V Collector-base voltage (I = 0) 45 V CBO E V Collector-emitter voltage (I = 0) 30 V CEO B V Emitter-base voltage (I = 0) 6 V EBO C I Collector current 5 A C ) s I Collector peak current (t < 5 ms) 10 A CM P ( t Total dissipation at T = 25 °C for STD878 15 c P C u W TOT Total dissipation at T = 25 °C for STN878 d1.6 amb o T Storage temperature r -65 to 150 °C STG P T Max. operating junction temperature 150 °C J e t e l o Table 3. Thermal data s b Symbol ParametOer Value Unit R Thermal resistance junctio-n-case for STD878 __max 8.3 °C/W thJC ) R Thermal resistance jsunction-ambient for STN878 (1) _max 78 °C/W thJA ( t 1. Device mounted on PCBc area of 1 cm2. u d o r P e t e l o s b O 2/10 Doc ID 13836 Rev 2

STD878, STN878 Electrical characteristics 2 Electrical characteristics T = 25 °C unless otherwise specified. case T able 4. Electrical characteristics Symbol Parameter Test conditions Min. Typ. Max. Unit I Collector cut-off current VCB = 30 V 10 µA CBO (IE = 0) VCB = 30 V; TC = 100 °C 100 µA Emitter cut-off current I V = 6 V 10 µA EBO (I = 0) EB ) C s Collector-emitter ( t V (1) breakdown voltage I = 10 mA 30 c V (BR)CEO C u (IB = 0) d o Collector-base r V breakdown voltage I = 100 µA P 45 V (BR)CBO C (IE = 0) e t Emitter-base breakdown e V I = 100 µA 6 V (BR)EBO voltage (IC = 0) E ol s I = 0.5 A I = 5 mA 0.15 V C b B I O= 2 A I = 50 mA 0.35 V C B V (1) Collector-emitter - IC = 5 A IB = 0.25 A 0.7 V CE(sat) saturation voltage ) IC = 6 A IB = 0.25 A 0.7 V s I = 8 A I = 0.4 A 1 V ( C B t c IC = 10 A IB = 0.5 A 1.2 V u V (1) Basde-emitter saturation IC = 2 A IB = 50 mA 1.1 V BE(sat) vooltage I = 6 A I = 0.25 A 1.2 V C B r P I = 10 mA V = 1 V 120 200 C CE e IC = 500 mA VCE = 1 V 100 200 300 e t IC = 5 A VCE = 1 V 70 100 ol hFE (1) DC current gain IC = 5 A VCE = 1 V s T = 100 °C 100 c b I = 8 A V = 1 V 55 O C CE I = 10 A V = 1 V 35 C CE Resistive load t Delay time I = 3 A V = 20 V 180 220 ns d C CC t Rise time I =- I =60 mA 160 210 ns r B1 B2 t Storage time see Figure8 250 300 ns s t Fall time 80 100 ns f 1. Pulse test: pulse duration ≤ 300 µs, duty cycle ≤ 2 % Doc ID 13836 Rev 2 3/10

Electrical characteristics STD878, STN878 2.1 Electrical characteristics (curves) Figure 2. DC current gain (V = 1 V) Figure 3. DC current gain (V = 3 V) CE CE ) s ( t c u d o Figure 4. Collector-emitter saturation Figure 5. Base-remitter saturation P voltage voltage e t e l o s b O - ) s ( t c u d o r P Figure 6. Resistive load switching time Figure 7. Resistive load switching time e (ON) (OFF) t e l o s b O 4/10 Doc ID 13836 Rev 2

STD878, STN878 Electrical characteristics 2.2 Test circuits Figure 8. Resistive load switching test circuit ) s ( t c u d o r P e t e l 1. Fast electronic switch o 2. Non-inductive resistor s b O - ) s ( t c u d o r P e t e l o s b O Doc ID 13836 Rev 2 5/10

Package mechanical data STD878, STN878 3 Package mechanical data In order to meet environmental requirements, ST offers these devices in different grades of ECOPACK® packages, depending on their level of environmental compliance. ECOPACK® specifications, grade definitions and product status are available at: www.st.com. ECOPACK® is an ST trademark. ) s ( t c u d o r P e t e l o s b O - ) s ( t c u d o r P e t e l o s b O 6/10 Doc ID 13836 Rev 2

STD878, STN878 Package mechanical data SOT-223 mechanical data mm. Dim. Min. Typ. Max. A 1.80 A1 0.02 0.1 B 0.60 0.70 0.85 ) s ( B1 2.90 3.00 3.1t5 c u c 0.24 0.26 0.35 d o D 6.30 6.50 6.70 r P e 2.30 e e1 4.60 t e E 3.30 ol3.50 3.70 s H 6.70 b 7.00 7.30 O V 10o - ) s ( t c u d o r P e t e l o s b O 0046067_M Doc ID 13836 Rev 2 7/10

Package mechanical data STD878, STN878 TO-252 (DPAK) mechanical data mm. DIM. min. typ max. A 2.20 2.40 A1 0.90 1.10 A2 0.03 0.23 b 0.64 0.90 ) b4 5.20 5.40 s c 0.45 0.60 ( t c2 0.48 0c.60 u D 6.00 6.20 d D1 5.10 o E 6.40 r 6.60 P E1 4.70 e 2.28 e t e1 4.40 e 4.60 H 9.35 ol 10.10 L 1 s b L1 2.80 O L2 0.80 L4 0.60 - 1 R ) 0.20 s V2 0( o 8 o t c u d o r P e t e l o s b O 0068772_G 8/10 Doc ID 13836 Rev 2

STD878, STN878 Revision history 4 Revision history T able 5. Document revision history Date Revision Changes 21-Aug-2007 1 Initial release. 30-Aug-2010 2 Inserted STD878T4 order code Table1 on page1. ) s ( t c u d o r P e t e l o s b O - ) s ( t c u d o r P e t e l o s b O Doc ID 13836 Rev 2 9/10

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