SD1446 RF & MICROWAVE TRANSISTORS HF/VHF APPLICATIONS .. .. .. 50 MHz 12.5 VOLTS EFFICIENCY 55% COMMON EMITTER GOLD METALLIZATION P OUT = 70 W MIN. WITH 10 dB GAIN .380 4LFL (M113) epoxy sealed ORDER CODE SD1446 BRANDING SD1446 PIN CONNECTION DESCRIPTION The SD1446 is a 12.5 V Class C epitaxial silicon NPN planar transistor designed primarily for land mobile transmitter applications. This device utilizes emitter ballasting and is extremely stable and capable of withstanding high VSWR under 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 36 V VCEO Collector-Emitter Voltage 18 V VEBO Emitter-Base Voltage 3.5 V Device Current 12.0 A Power Dissipation 183 W TJ Junction Temperature +200 °C T STG Storage Temperature − 65 to +150 °C 1.05 °C/W IC PDISS THERMAL DATA RTH(j-c) Junction-Case Thermal Resistance November 1992 1/5 SD1446 ELECTRICAL SPECIFICATIONS (T case = 25 ° C) STATIC Symbol Value Test Conditions Min. Typ. Max. Unit BVCBO IC = 50mA IE = 0mA 36 — — V BVCES IC = 100mA VBE = 0V 36 — — V BVCEO IC = 50mA IB = 0mA 18 — — V BVEBO IE = 10mA IC = 0mA 3.5 — — V ICES VCE = 15V IE = 0mA — — 10 mA hFE VCE = 5V IC = 5A 10 — — — DYNAMIC Symbol Value Test Conditions Typ. Max. Unit POUT f = 50 MHz PIN = 7 W VCE = 12.5 V 70 — — W GP ηc f = 50 MHz PIN = 7 W VCE = 12.5 V 10 — — dB f = 50 MHz PIN = 7 W VCE = 12.5 V — 55 — % COB f = 1 MHz VCB = 12.5V — — 300 pF TYPICAL PERFORMANCE POWER OUTPUT vs POWER INPUT 2/5 Min. SD1446 IMPEDANCE DATA TYPICAL INPUT IMPEDANCE FREQ. 50 MHz ZIN (Ω) 0.8 + j 0.9 Z CL (Ω) 1.2 + j 0.6 POUT = 70W VCE = 12.5V TYPICAL COLLECTOR LOAD IMPEDANCE 3/5 SD1446 TEST CIRCUIT 4/5 C1, C4 C2 C3 C5 C6 C7 C8 : : : : : : : 50 - 380pF Arco 465 110 - 580pF Arco 467 140 - 680pF Arco 468 9 - 180pF Arco 463 10µF, 35Vdc, Electrolytic .01µF Erie 1000pF Unelco L1 : 2 1/2 Turns, #14 Awg, Tinned, 1/4” I.D. Loose Wound L2 L3 L4 L5 : 10 Turns, #28 AWG, Enameled on Ferroxcube Sleeve #3B : 1 1/2 Turns, #12 AWG, Tinned, 3/8” I.D. Loose Wound : 8 Turns, #18 AWG on 1/4” I.D. Coil form 1/2” Length with Ferrite Slug : 11 Turns, #16 AWG, Enameled on Torroid, Micrometals, T50-2 Board Material: Double Sided Copper 1/16” Thick SD1446 PACKAGE MECHANICAL DATA Ref.: Dwg. No.12-0113 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