BF421 ® SMALL SIGNAL PNP TRANSISTOR PRELIMINARY DATA Ordering Code Marking Package / Shipment BF421 BF421 TO-92 / Bulk BF421-AP BF421 TO-92 ■ ■ ■ / Ammopack SILICON EPITAXIAL PLANAR PNP HIGH VOLTAGE TRANSISTOR TO-92 PACKAGE SUITABLE FOR THROUGH-HOLE PCB ASSEMBLY THE NPN COMPLEMENTARY TYPE IS BF420 APPLICATIONS ■ VIDEO AMPLIFIER CIRCUITS (RGB CATHODE CURRENT CONTROL) ■ TELEPHONE WIRELINE INTERFACE (HOOK SWITCHES, DIALER CIRCUITS) TO-92 Bulk TO-92 Ammopack INTERNAL SCHEMATIC DIAGRAM ABSOLUTE MAXIMUM RATINGS Symbol Parameter Value Unit V CBO Collector-Base Voltage (I E = 0) -300 V V CEO Collector-Emitter Voltage (I B = 0) -300 V V EBO Emitter-Base Voltage (I C = 0) -5 V -500 mA -600 mA 830 mW IC I CM Collector Current Collector Peak Current (t p < 5ms) o P tot Total Dissipation at T C = 25 C T stg Storage Temperature Tj Max. Operating Junction Temperature February 2003 -65 to 150 o C 150 o C 1/5 BF421 THERMAL DATA R thj-amb • Thermal Resistance Junction-Ambient R thj-Case • Thermal Resistance Junction-Case Max Max o 150 50 o C/W C/W ELECTRICAL CHARACTERISTICS (Tcase = 25 oC unless otherwise specified) Symbol Parameter Test Conditions I CBO Collector Cut-off Current (I E = 0) V CB = -200 V V CB = -200 V V CB = -300 V I EBO Emitter Cut-off Current (I C = 0) V EB = -5 V Min. T C = 150 o C Typ. Max. Unit -10 -10 -100 nA µA µA -50 nA V (BR)CEO ∗ Collector-Emitter Breakdown Voltage (I B = 0) I C = -10 mA -300 V V (BR)CBO Collector-Base Breakdown Voltage (I E = 0) I C = -10 µA -300 V V (BR)EBO Emitter-Base Breakdown Voltage (I C = 0) I E = -100 µA -5 V V CE(sat) ∗ Collector-Emitter Saturation Voltage I C = -30 mA I B = -5 mA -0.6 V V BE(sat) ∗ Base-Emitter Saturation Voltage I C = -30 mA I B = -5 mA -1.2 V DC Current Gain I C = -25 mA V CE = -20 V Transition Frequency I C = -10 mA V CE = -10 V f =100MHz h FE ∗ fT C RE Reverse Capacitance IE = 0 ∗ Pulsed: Pulse duration ≤ 300 µs, duty cycle ≤ 2 % 2/5 V CB = -30 V f = 1MHz 50 60 MHz 1.6 pF BF421 TO-92 MECHANICAL DATA mm DIM. MIN. TYP. inch MAX. MIN. TYP. MAX. A 4.32 4.95 0.170 0.195 b 0.36 0.51 0.014 0.020 D 4.45 4.95 0.175 0.194 E 3.30 3.94 0.130 0.155 e 2.41 2.67 0.095 0.105 e1 1.14 1.40 0.045 0.055 L 12.70 15.49 0.500 0.609 R 2.16 2.41 0.085 0.094 S1 1.14 1.52 0.045 0.059 W 0.41 0.56 0.016 0.022 V 4 degree 6 degree 4 degree 6 degree 3/5 BF421 TO-92 AMMOPACK SHIPMENT (Suffix"-AP") MECHANICAL DATA DIM. A1 T T1 T2 d P0 P2 F1,F2 delta H W W0 W1 W2 H H0 H1 D0 t L I1 delta P 4/5 MIN. mm TYP. 12.50 5.65 2.44 -2.00 17.50 5.70 8.50 18.00 6.00 9.00 18.50 15.50 16.00 3.80 4.00 3.00 -1.00 12.70 6.35 2.54 MAX. 4.80 3.80 1.60 2.30 0.48 12.90 7.05 2.94 2.00 19.00 6.30 9.25 0.50 20.50 16.50 25.00 4.20 0.90 11.00 1.00 MIN. inch TYP. 0.492 0.222 0.096 -0.079 0.689 0.224 0.335 0.709 0.236 0.354 0.728 0.610 0.630 0.150 0.157 0.118 -0.039 0.500 0.250 0.100 MAX. 0.189 0.150 0.063 0.091 0.019 0.508 0.278 0.116 0.079 0.748 0.248 0.364 0.020 0.807 0.650 0.984 0.165 0.035 0.433 0.039 BF421 Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specification mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics. The ST logo is a trademark of STMicroelectronics © 2003 STMicroelectronics – Printed in Italy – All Rights Reserved STMicroelectronics GROUP OF COMPANIES Australia - Brazil - Canada - China - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan - Malaysia - Malta - Morocco Singapore - Spain - Sweden - Switzerland - United Kingdom - United States. http://www.st.com 5/5