DISCRETE SEMICONDUCTORS DATA SHEET book, halfpage M3D039 LXE18400X NPN microwave power transistor Product specification Supersedes data of December 1994 1999 Apr 22 Philips Semiconductors Product specification NPN microwave power transistor FEATURES • Diffused emitter ballasting resistors providing excellent current sharing and withstanding a high VSWR • Interdigitated structure provides high emitter efficiency • Gold metallization realizes very good stability of the characteristics and excellent lifetime • Multicell geometry gives good balance of dissipated power and low thermal resistance • Internal input and output prematching ensures good stability and allows an easier design of wideband circuits. APPLICATION Intended for use in common emitter, class AB amplifiers in CW conditions for military and professional applications between 1.7 and 2 GHz. LXE18400X QUICK REFERENCE DATA Microwave performance up to Tmb = 25 °C in a common emitter class AB amplifier. MODE OF OPERATION f (GHz) VCE (V) ICQ (A) PL1 (W) Gpo (dB) ηC (%) Zi; ZL (Ω) Class AB (CW) 1.85 24 0.15 ≥39 ≥7 typ. 42 see Figs 8 and 9 PINNING - SOT439A PIN DESCRIPTION 1 collector 2 base 3 emitter connected to flange 1 handbook, 4 columns c b 3 3 e 2 DESCRIPTION MAM045 Top view NPN silicon planar epitaxial microwave power transistor in a SOT439A metal ceramic flange package, with emitter connected to flange. Fig.1 Simplified outline and symbol. WARNING Product and environmental safety - toxic materials This product contains beryllium oxide. The product is entirely safe provided that the BeO disc is not damaged. All persons who handle, use or dispose of this product should be aware of its nature and of the necessary safety precautions. After use, dispose of as chemical or special waste according to the regulations applying at the location of the user. It must never be thrown out with the general or domestic waste. 1999 Apr 22 2 Philips Semiconductors Product specification NPN microwave power transistor LXE18400X LIMITING VALUES In accordance with the Absolute Maximum Rating System (IEC 134). SYMBOL PARAMETER CONDITIONS MIN. MAX. UNIT VCBO collector-base voltage open emitter − 45 V VCER collector-emitter voltage RBE = 220 Ω − 30 V VCEO collector-emitter voltage open base − 25 V VEBO emitter-base voltage open collector − 3 V IC collector current (DC) − 9 A Pi input power f = 1.85 GHz; VCE = 24 V; class AB − 12 W Tmb = 75 °C 70 W − Ptot total power dissipation Tstg storage temperature −65 +150 °C Tj junction temperature − 200 °C Tsld soldering temperature − 235 °C t ≤ 10 s; note 1 Note 1. Up to 0.2 mm from ceramic. MLC436 10 MLC437 80 handbook, halfpage handbook, halfpage P tot (W) IC 60 (A) I 40 1 20 10 1 0 1 10 V CE (V) 0 10 2 50 100 150 200 o T mb ( C) Tmb ≤ 75 °C. (I) Region of permissible DC operation. Fig.2 DC SOAR. 1999 Apr 22 Fig.3 Power derating curve. 3 Philips Semiconductors Product specification NPN microwave power transistor LXE18400X THERMAL CHARACTERISTICS SYMBOL PARAMETER CONDITIONS Rth j-mb thermal resistance from junction to mounting base Rth mb-h thermal resistance from mounting base to heatsink Tj = 100 °C MAX. UNIT 1.3 K/W 0.2 K/W CHARACTERISTICS Tmb = 25 °C unless otherwise specified. SYMBOL PARAMETER CONDITIONS MIN. MAX. UNIT ICBO collector cut-off current IE = 0; VCB = 20 V − 4.5 mA V(BR)CER collector-emitter breakdown voltage IC = 150 mA; RBE = 220 Ω 30 − V V(BR)CBO collector-base breakdown voltage IC = 22 mA 45 − V V(BR)EBO emitter-base breakdown voltage IE = 22 mA 3 − V hFE DC current gain IC = 4.5 A; VCE = 3 V 15 100 APPLICATION INFORMATION Microwave performance up to Tmb = 25 °C in a common emitter class AB amplifier. MODE OF OPERATION f (GHz) VCE (V) ICQ (A) PL1 (W) Gpo (dB) ηC (%) Zi; ZL (Ω) Class AB (CW) 1.85 24 0.15 ≥39 typ. 44 ≥7 typ. 7.8 typ. 42 see Figs 8 and 9 1999 Apr 22 4 Philips Semiconductors Product specification NPN microwave power transistor LXE18400X 30 handbook, full pagewidth 5.2 0.8 30 12.5 3.5 3.0 5.0 40 5.0 4.0 6.5 2.5 6.2 0.8 5.0 40 5.0 10.0 0.6 , C5 2.5 4.0 5.0 V BB 0.6 VCC C6 F1 input L1 output L2 C1 C4 C2 C3 Rr Rr MLC435 The test circuit is split into two independent halves, each being 30 x 40 mm in size. Dimensions in mm. Substrate: Epsilam 10. Thickness: 0.635 mm. Permittivity: εr = 10. Fig.4 Prematching test circuit board. 1999 Apr 22 5 Philips Semiconductors Product specification NPN microwave power transistor LXE18400X PREMATCHING TEST CIRCUIT handbook, full pagewidth BIAS CIRCUIT VCC R1 C6 TR1 C5 R2 F1 P1 D1 R3 L2 C7 L1 DUT D2 MEA600 Fig.5 Class AB bias circuit. List of components (see Figs 4 and 5) COMPONENT DESCRIPTION VALUE ORDERING INFORMATION TR1 transistor, BD239 or equivalent C1, C4 DC blocking chip capacitor 100 pF ATC 100A1201kp C2, C3 trimmer capacitor 0.5 to 5.0 pF Tekelec 727-1 C5, C6 feedthrough bypass capacitor 1500 pF Erie 1250-003 C7 electrolytic capacitor 10 µF, >30 V D1 diode BY239 or equivalent; note 1 D2 diode BY239 or equivalent; note 2 L1 4 turns 0.5 mm copper wire; internal diameter = 2 mm L2 3 turns 0.5 mm copper wire; internal diameter = 2 mm P1 linear potentiometer 4.7 kΩ R1 resistor 100 Ω, 0.25 W R2 resistor 10 kΩ, 0.25 W 56 Ω, 0.25 W R3 resistor F1 ferrite bead Rr copper rivet Philips tube, 12NC = 4330 030 43081 4.2 x 2.2 x 3.2 mm (4B1) Notes 1. In thermal contact with TR1. 2. In thermal contact with DUT. 1999 Apr 22 6 Philips Semiconductors Product specification NPN microwave power transistor LXE18400X MLC438 60 MLC439 15 handbook, halfpage handbook, halfpage d im (dBc) PL (W) 20 (3) 40 (2) (1) 25 I CQ = 300 mA 30 35 20 75 mA 40 150 mA 45 0 0 2 4 6 8 P i (W) 0 10 (1) ICQ = 75 mA. (2) ICQ = 150 mA. (3) ICQ = 300 mA. VCE = 24 V; f = 1850 MHz. 10 20 40 30 Po (av) (W) VCE = 24 V; f1 = 1850 MHz; f2 = 1850.2 MHz. Fig.7 Fig.6 Load power as a function of input power. Intermodulation distortion as a function of average output power. Input and optimum load impedances VCE = 24 V; ICQ = 0.15 mA; typical values at PL = PL1 (see Figs 8 and 9). 1999 Apr 22 f (GHz) Zi (Ω) ZL (Ω) 1.70 5.4 + j7.2 3.3 − j0.3 1.85 8.3 + j0.7 2.4 − j1.0 2.00 2.1 + j0.2 2.2 − j1.0 7 Philips Semiconductors Product specification NPN microwave power transistor LXE18400X 1 handbook, full pagewidth 0.5 2 1.7 GHz 0.2 5 Zi +j 0.2 0.5 0 2 5 ∞ 10 1.85 GHz 2 GHz –j 10 10 5 0.2 2 0.5 MLC440 1 VCE = 24 V; Zo = 10 Ω; ICQ = 0.15 mA. Fig.8 Input impedance as a function of frequency; typical values at PL = PL1. 1 handbook, full pagewidth 0.5 2 0.2 5 10 +j 0 0.2 2 GHz –j 0.5 2 5 ∞ 10 1.7 GHz 1.85 GHz 10 ZL 0.2 5 2 0.5 1 MLC441 VCE = 24 V; Zo = 10 Ω; ICQ = 0.15 mA. Fig.9 Optimum load impedance as a function of frequency; typical values at PL = PL1. 1999 Apr 22 8 Philips Semiconductors Product specification NPN microwave power transistor LXE18400X PACKAGE OUTLINE Flanged hermetic ceramic package; 2 mounting holes; 2 leads SOT439A D A F 3 D1 U1 B q C c 1 H p U2 A E1 E w1 M A M B M 2 w2 M C M b 0 Q 5 10 mm scale DIMENSIONS (millimetre dimensions are derived from the original inch dimensions) UNIT A b c mm 6.05 5.23 3.69 3.42 0.13 0.05 12.85 12.83 12.55 12.57 0.238 0.145 0.005 0.206 0.135 0.002 0.506 0.505 0.494 0.495 inches OUTLINE VERSION D D1 F H p Q q U1 U2 w1 w2 10.31 10.26 10.01 10.06 1.58 1.47 17.27 15.75 3.43 3.17 3.33 2.97 16.51 22.94 22.73 9.91 9.65 0.25 0.79 0.406 0.404 0.394 0.396 0.62 0.58 0.680 0.620 0.135 0.125 0.131 0.650 0.117 E E1 REFERENCES IEC JEDEC EIAJ EUROPEAN PROJECTION ISSUE DATE 99-03-29 SOT439A 1999 Apr 22 0.905 0.390 0.010 0.031 0.895 0.380 9 Philips Semiconductors Product specification NPN microwave power transistor LXE18400X DEFINITIONS Data Sheet Status Objective specification This data sheet contains target or goal specifications for product development. Preliminary specification This data sheet contains preliminary data; supplementary data may be published later. Product specification This data sheet contains final product specifications. Limiting values Limiting values given are in accordance with the Absolute Maximum Rating System (IEC 134). Stress above one or more of the limiting values may cause permanent damage to the device. These are stress ratings only and operation of the device at these or at any other conditions above those given in the Characteristics sections of the specification is not implied. Exposure to limiting values for extended periods may affect device reliability. Application information Where application information is given, it is advisory and does not form part of the specification. LIFE SUPPORT APPLICATIONS These products are not designed for use in life support appliances, devices, or systems where malfunction of these products can reasonably be expected to result in personal injury. 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