SD1457 RF & MICROWAVE TRANSISTORS FM BROADCAST APPLICATIONS .. .. .. 108 MHz 28 VOLTS EFFICIENCY 75% COMMON EMITTER GOLD METALLIZATION P 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. 1. Collector 2. Emitter 3. Base 4. Emitter ABSOLUTE MAXIMUM RATINGS (T case = 25 ° C) Symbol Parameter Value Unit VCBO Collector-Base Voltage 65 V VCEO Collector-Emitter Voltage 30 V VCES Collector-Emitter Voltage 60 V VEBO Emitter-Base Voltage 4.0 V Device Current 10 A Power Dissipation 100 W TJ Junction Temperature +200 °C T STG Storage Temperature − 65 to +150 °C 1.5 °C/W IC PDISS THERMAL DATA RTH(j-c) November 1992 Junction-Case Thermal Resistance 1/5 SD1457 ELECTRICAL SPECIFICATIONS (T case = 25 ° C) STATIC Symbol Value Test Conditions Min. Typ. Max. Unit BVCBO IC = 50mA IE = 0mA 65 — — V BVCER IC = 50mA RBE = 10Ω 60 — — V BVCEO IC = 50mA IB = 0mA 30 — — V BVEBO IE = 10mA IC = 0mA 4.0 — — V hFE VCE = 5V IC = 1A 20 — 150 — DYNAMIC Symbol Value Test Conditions Min. Typ. Max. Unit POUT f = 108 MHz PIN = 7.5 W VCE = 28 V 75 — — W GP ηc f = 108 MHz PIN = 7.5 W VCE = 28 V 10 — — dB f = 108 MHz PIN = 7.5 W VCE = 28 V 70 — — % COB f = 1 MHz VCB = 30 V — — 85 pF TYPICAL PERFORMANCE POWER OUTPUT vs POWER INPUT 2/5 THERMAL RESISTANCE vs CASE TEMPERATURE SD1457 IMPEDANCE DATA ZIN ZCL FREQ. Z IN (Ω) 88 MHz 1.4 + j 0.1 Z CL (Ω) 5.5 + j 0.7 98 MHz 1.2 + j 0.3 6.1 + j 1.1 100 MHz 1.0 + j 0.5 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 0.1µF, Disc Capacitor 100µF, 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 0.7µH, 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. 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