BF257CSM4 SILICON PLANAR NPN HIGH VOLTAGE TRANSISTOR IN A CERAMIC SURFACE MOUNT PACKAGE MECHANICAL DATA Dimensions in mm (inches) 1.40 ± 0.15 (0.055 ± 0.006) 5.59 ± 0.13 (0.22 ± 0.005) 0.23 rad. (0.009) 3 2 4 1 1.27 ± 0.05 (0.05 ± 0.002) 0.64 ± 0.08 (0.025 ± 0.003) 3.81 ± 0.13 (0.15 ± 0.005) 0.25 ± 0.03 (0.01 ± 0.001) 0.23 min. (0.009) • High Voltage 2.03 ± 0.20 (0.08 ± 0.008) 1.02 ± 0.20 (0.04 ± 0.008) FEATURES • Ceramic Surface Mount • Screening Options Available LCC3 PAD 1 = COLLECTOR PAD 3 = EMITTER PAD 2 = N/C PAD 4 = BASE ABSOLUTE MAXIMUM RATINGS VCBO VCEO VEBO IC ICM Ptot Tstg Tj Collector - Base Voltage (IE = 0 ) Collector - Emitter Voltage (IB = 0) Emitter Base Voltage (IC = 0) Collector Current Collector Peak Current Total Power Dissipation at Tcase £ 50°C Storage Temperature Junction Temperature 160V 160V 5V 100mA 200mA 5W -55 to 200°C 200°C Semelab Plc reserves the right to change test conditions, parameter limits and package dimensions without notice. Information furnished by Semelab is believed to be both accurate and reliable at the time of going to press. However Semelab assumes no responsibility for any errors or omissions discovered in its use. Semelab encourages customers to verify that datasheets are current before placing orders. Semelab plc. Telephone +44(0)1455 556565. Fax +44(0)1455 552612. E-mail: [email protected] Website: http://www.semelab.co.uk Document Number 2666 Issue 1 BF257CSM4 Thermal Data Rth j-case Thermal resistance junction - case max 30°C/W Rth j-amb Thermal resistance junction - ambient max 175°C/W Typ. Max. Electrical Characteristics(Tamb = 25°C Unless otherwise specified) Parameter Test Conditions Min. V(BR)CEO* Collector–Emitter Breakdown Voltage IC = 10mA IB = 0 160 V(BR)CBO Collector – Base Breakdown Voltage IC = 100mA IE = 0 160 V(BR)EBO Emitter - Base Breakdown Voltage IC = 0 IE = 100mA ICBO Collector Cutoff Current VCB =100V IE = 0 50 nA VCE(sat)* Collector – Emitter Saturation Voltage IC = 30mA IB = 6mA 1 V hFE* DC Current Gain IC = 30mA IB = 10V ft Transition Frequency IC = 15mA VCE = 10V Cre Reverse Capacitance IC = 0 VCE = 30V * Pulsed test tp = 300ms , d f = 1MHz Unit V 5 25 — 90 MHz 3 pF = 1% Semelab Plc reserves the right to change test conditions, parameter limits and package dimensions without notice. Information furnished by Semelab is believed to be both accurate and reliable at the time of going to press. However Semelab assumes no responsibility for any errors or omissions discovered in its use. Semelab encourages customers to verify that datasheets are current before placing orders. Semelab plc. Telephone +44(0)1455 556565. Fax +44(0)1455 552612. E-mail: [email protected] Website: http://www.semelab.co.uk Document Number 2666 Issue 1