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NPN pre-biased (bias resistor built-in) transistor, 50 V VCEO, 100 mA, 200 mW. Internal network: R1 = 2.2 kΩ series resistor from BASE (input, pin 1) to transistor base; R2 = 47 kΩ from internal base to EMITTER (pin 2). S-Mini (SOT-346 / SC-59 / TO-236MOD, DigiKey: SOT-23-3) 3-pin. Pinout: 1 = B (input), 2 = E, 3 = C.
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NPN pre-biased (bias resistor built-in) transistor, 50 V VCEO, 100 mA, 200 mW. Internal network: R1 = 2.2 kΩ series resistor from BASE (input, pin 1) to transistor base; R2 = 47 kΩ from internal base to EMITTER (pin 2). S-Mini (SOT-346 / SC-59 / TO-236MOD, DigiKey: SOT-23-3) 3-pin. Pinout: 1 = B (input), 2 = E, 3 = C.

Name
Pin #
Type
Section
Pin Group
Orientation
Order
Sub-symbol
Pin Description
B
1
Input
Base Input
Left
1
Base input via internal R1 = 2.2 kΩ series resistor; R2 = 47 kΩ internal base-to-emitter
E
2
Passive
Emitter
Bottom
1
Emitter (also R2 = 47 kΩ return)
C
3
Passive
Collector
Top
1
Collector

RN1405,LF