2C4957 SEMICOA | Alldatasheet
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Technical content
Data Sheet No. 2C4957 Generic Packaged Parts: 2N4957, 2N4958, 2N4959 Chip type 2C4957 by Semicoa Semi- conductors provides performance similar to these devices. Product Summary: Part Numbers: 2N4957 , 2N4957UB , 2N4958, 2N4958UB, 2N4959, 2N4959UB, SD4957, SD4957F, SQ4957, SQ4957F APPLICATIONS: Designed for high-gain, low-noise class A amplifiers, oscillators and mixers. Features: Special Characteristics ft = 1.6 GHz (typ) at 2.0 mA/10V Radiation graphs available Top Al - 12 kÅ min. Backside Au - 6.5 kÅ nom. Emitter 2.3 mils x 2.3 mils Base 2.3 mils x 2.3 mils Die Thickness Chip Area Top Surface 16 mils x 16 mils Silox Passivated Mechanical Specifications Metallization Bonding Pad Size 8 mils nominal Parameter Test conditions Min Max Unit BV CEO IC = 1.0 mA 30 --- V dc BV CBO IC = 100 µA 30 --- V dc BV EBO IE = 100 µA 3.0 --- V dc ICBO V CB = 10 V dc --- 0.1 µA h FE V CE = 10 V, I C = 2.0 mA 20 150 ---
Electrical Characteristics
T A = 25 o C Due to limitations of probe testing, only dc parameters are tested. This must be done with pulse width less than 300 µs, duty cycle less than 2%.