DTC643TU / DTC643TK Transistors Digital transistors (built-in resistor) DTC643TU / DTC643TK !External dimensions (Unit : mm) 2.0±0.2 UMT3 0.9±0.1 1.3±0.1 <SC-70> 0.65 0.65 (1) 0.2 0.7±0.1 2.1±0.1 (2) 1.25±0.1 0−0.1 (3) 0.3 +0.1 −0 !Structure NPN digital transistor (Built-in resistor type) (1) Emitter (2) Base (3) Collector 0.15±0.05 Each lead has same dimensions Abbreviated symbol : R03 2.9±0.2 SMT3 1.1 +0.2 −0.1 1.9±0.2 <SC-59> 0.8±0.1 0.95 0.95 (2) 1.6 +0.2 −0.1 (1) 2.8±0.2 !Equivalent circuit 0.1Min. !Features In addition to the features of regular digital transistors. 1) Low saturation voltage, typically VCE (sat) =40mV at IC / IB=50mA / 2.5mA, makes these transistors ideal for muting circuits. 2) These transistors can be used at high current levels, IC=600mA. B 0.4 +0.1 −0.05 R R=4.7kΩ E (1) Emitter (2) Base (3) Collector 0.15 +0.1 −0.06 0.3Min. (3) C Each lead has same dimensions Abbreviated symbol : R03 B : Base C : Collector E : Emitter !Absolute maximum ratings (Ta=25°C) Parameter Collector-base voltage Collector-emitter voltage Emitter-base voltage Collector current Collector power dissipation Junction temperature Storage temperature Symbol VCBO VCEO VEBO IC PC Tj Tstg Limits 20 20 12 600 200 150 −55 to +150 Unit V V V mA mW °C °C 1/2 DTC643TU / DTC643TK Transistors !Electrical characteristics (Ta=25°C) Parameter Symbol Min. Typ. Max. Unit Conditions BVCBO Collector-base breakdown voltage 20 − − V IC=50µA Collector-emitter breakdown voltage BVCEO 20 − − V IC=1mA Emitter-base breakdown voltage BVEBO 12 − − V IE=50µA Collector cutoff current ICBO − − 0.5 µA VCB=20V − − 0.5 µA VEB=12V IEBO Emitter cutoff current Collector-emitter saturation voltage VCE (sat) − 40 150 mV IC / IB=50mA / 2.5mA hFE 820 − 2700 − VCE=5V, IC=50mA DC current transfer ratio Input resistance 3.29 4.7 6.11 kΩ R1 − Transition frequency fT − 150 − MHz VCE=10V, IE= −50mA, f=100MHz Output "ON" resistance Ron − 0.55 − Ω VI=5V, RL=1kΩ, f=1MHz ∗ ∗Transition frequency of the device. !Packaging specifications and hFE Type Package UMT3 SMT3 Packaging type Taping Taping Code T106 T146 Basic ordering unit (pieces) 3000 3000 − DTC643TU − DTC643TK !Electrical characteristic curves 100°C 25°C 1000 −40°C 100 0.1 1 10 100 1000 IC / IB=20 / 1 ON RESISTANCE : Ron (Ω) 10000 VCE=5V COLLECTOR SATURATION VOLTAGE : VCE (sat) (mV) DC CURRENT GAIN : hFE 10000 1000 100 100°C 25°C 10 −40°C 1 0.1 1000 COLLECTOR CURRENT : IC (mA) 1 10 100 1000 COLLECTOR CURRENT : IC (mA) Fig.1 DC Current Gain vs. Collector Current Fig.2 Collector-Emitter Saturation Voltage vs. Collector Current Ta=25°C f=1kHz RL=1kΩ hFE=1500 (5V / 50mA) 100 10 1 0.1 0.1 1 10 100 INPUT VOLTAGE : VI (V) Fig.3 "ON" resistance vs. Input Voltage !Ron measurement circuit RL=1kΩ Input vi 100mV (rms) f=1kHz Ron= v0 ×RL vi−v0 V vOutput 0 vI Fig.4 Output "ON" resistance (Ron) measurement circuit 2/2 Appendix Notes No technical content pages of this document may be reproduced in any form or transmitted by any means without prior permission of ROHM CO.,LTD. The contents described herein are subject to change without notice. The specifications for the product described in this document are for reference only. Upon actual use, therefore, please request that specifications to be separately delivered. Application circuit diagrams and circuit constants contained herein are shown as examples of standard use and operation. Please pay careful attention to the peripheral conditions when designing circuits and deciding upon circuit constants in the set. Any data, including, but not limited to application circuit diagrams information, described herein are intended only as illustrations of such devices and not as the specifications for such devices. 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Should you intend to use these products with equipment or devices which require an extremely high level of reliability and the malfunction of with would directly endanger human life (such as medical instruments, transportation equipment, aerospace machinery, nuclear-reactor controllers, fuel controllers and other safety devices), please be sure to consult with our sales representative in advance. About Export Control Order in Japan Products described herein are the objects of controlled goods in Annex 1 (Item 16) of Export Trade Control Order in Japan. In case of export from Japan, please confirm if it applies to "objective" criteria or an "informed" (by MITI clause) on the basis of "catch all controls for Non-Proliferation of Weapons of Mass Destruction. Appendix1-Rev1.1