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| SD1457 RF & MICROWAVE TRANSISTORS FM BROADCAST APPLICATIONS .108 .28 .EFFI .COMMON .GOLD .P MHz VOLTS CIENCY 75% EMITTER METALLIZATION OUT = 75 W MIN. WITH 10.0 dB GAIN .500 4LFL (M174) epoxy sealed ORDER CODE SD1457 BRANDING SD1457 PIN CONNECTION DESCRIPTION The SD1457 is a 28 V gold metallized epitaxial silicon NPN planar transistor designed for FM VHF broadcast transmitters. This device utlizes diffused emitter resistors to achieve infinite VSWR at rated operating conditions. ABSOLUTE MAXIMUM RATINGS (T case = 25 C) Symbol Parameter Value Unit 1. Collector 2. Emitter 3. Base 4. Emitter VCBO VCEO VCES VEBO IC PDISS TJ T STG Collector-Base Voltage Collector-Emitter Voltage Collector-Emitter Voltage Emitter-Base Voltage Device Current Power Dissipation Junction Temperature Storage Temperature 65 30 60 4.0 10 100 +200 - 65 to +150 V V V V A W C C C/W 1/5 THERMAL DATA RTH(j-c) November 1992 Junction-Case Thermal Resistance 1.5 SD1457 ELECTRICAL SPECIFICATIONS (T case = 25 C) STATIC Symbol Test Conditions Value Min. Typ. Max. Unit BVCBO BVCER BVCEO BVEBO hFE DYNAMIC Symbol IC = 50mA IC = 50mA IC = 50mA IE = 10mA VCE = 5V IE = 0mA RBE = 10 IB = 0mA IC = 0mA IC = 1A 65 60 30 4.0 20 -- -- -- -- -- -- -- -- -- 150 V V V V -- Test Conditions Value Min. Typ. Max. Unit POUT GP c COB f = 108 MHz f = 108 MHz f = 108 MHz f = 1 MHz PIN = 7.5 W PIN = 7.5 W PIN = 7.5 W VCB = 30 V VCE = 28 V VCE = 28 V VCE = 28 V 75 10 70 -- -- -- -- -- -- -- -- 85 W dB % pF TYPICAL PERFORMANCE POWER OUTPUT vs POWER INPUT THERMAL RESISTANCE vs CASE TEMPERATURE 2/5 SD1457 IMPEDANCE DATA ZIN ZCL FREQ. 88 MHz 98 MHz 100 MHz Z IN () 1.4 + j 0.1 1.2 + j 0.3 1.0 + j 0.5 Z CL () 5.5 + j 0.7 6.1 + j 1.1 5.7 + j 1.6 TEST CIRCUIT C1, C2, C14 C3 C4 C5, C6 C7, C10 C8, C9 C11, C12 C13 C15 : : : : : : : : : 24 - 200pF, Arco 425 16 - 100pF, Arco 423 62pF, Unelco Capacitor 330pF, Unelco Capacitor 1000pF, Unelco Capacitor 36pF, Unelco Capacitor 0.1F, Disc Capacitor 100F, 63V, Electrolytic Capacitor 25 - 150pF, Arco 424 L1 L2 L3 L4 L5 L6 L7 : : : : : : : 3 Turns, 1mm Wire, 6mm I.D. 1/2 Turn, 1.4mm Wire, 15mm Length 0.7H, Molded Choke 1/2 Turn, 2mm Wire, 20mm Length 4 Turns, 1mm Wire, 6mm I.D. 4 Turns, 1.2mm Wire on Ferrite Core 3 Turns, 1.4mm Wire, 8mm I.D. Board Material: Epoxy Glass 3/5 SD1457 PACKAGE MECHANICAL DATA Ref.: Dwg. No.12-0174 4/5 SD1457 Information furnished is believed to be accurate and reliable. However, SGS-THOMSON Microelectronics assumes no responsability for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may results from its use. No license is granted by implication or otherwise under any patent or patent rights of SGS-THOMSON Microelectronics. Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. SGS-THOMSON Microelectronics products are not authorized for use ascritical components in life support devices or systems without express written approval of SGS-THOMSON Microelectonics. (c) 1994 SGS-THOMSON Microelectronics - All Rights Reserved SGS-THOMSON Microelectronics GROUP OF COMPANIES Australia - Brazil - France - Germany - Hong Kong - Italy - Japan - Korea - Malaysia - Malta - Morocco - The Netherlands Singapore - Spain - Sweden - Switzerland - Taiwan - Thailand - United Kingdom - U.S.A 5/5 |
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