DISCRETE SEMICONDUCTORS DATA SHEET BLT81 UHF power transistor Product specification Supersedes data of November 1992 1996 May 09
Philips Semiconductors Product specification UHF power transistor BLT81 FEATURES • SMD encapsulation • Gold metallization ensures excellent reliability. 4 handbook, halfpage APPLICATIONS • Hand-held radio equipment in the 900 MHz communication band. c b DESCRIPTION e NPN silicon planar epitaxial transistor encapsulated in a plastic SOT223 SMD package. 1 PINNING - SOT223 2 3 MAM043 - 1 Top view PIN SYMBOL DESCRIPTION 1 e emitter 2 b base 3 e emitter 4 c collector Fig.
Philips Semiconductors Product specification UHF power transistor BLT81 LIMITING VALUES In accordance with the Absolute Maximum Rating System (IEC 134). SYMBOL PARAMETER CONDITIONS MIN. MAX. UNIT VCBO collector-base voltage open emitter − 20 V VCEO collector-emitter voltage open base − 9.5 V VEBO emitter-base voltage open collector − 2.
Philips Semiconductors Product specification UHF power transistor BLT81 CHARACTERISTICS Tj = 25 °C unless otherwise specified. SYMBOL PARAMETER CONDITIONS V(BR)CBO collector-base breakdown voltage MIN. TYP. MAX. UNIT open emitter; IC = 1 mA 20 − − V V(BR)CEO collector-emitter breakdown voltage open base; IC = 10 mA 9.5 − − V V(BR)EBO emitter-base breakdown voltage open collector; IE = 0.1 mA 2.5 − − V ICES collector leakage current VCE = 10 V; VBE = 0 − − 0.
Philips Semiconductors Product specification UHF power transistor BLT81 APPLICATION INFORMATION RF performance at Ts ≤ 60 °C in a common emitter test circuit (see note 1 and Fig.7). f (MHz) MODE OF OPERATION CW, class-B narrow band 900 VCE (V) PL (W) 7.5 1.2 6 1.2 Gp (dB) ηC (%) ≥6 ≥60 typ. 8 typ. 77 typ. 6.5 typ. 77 Note 1. Ts is the temperature at the soldering point of the collector pin.
Philips Semiconductors Product specification UHF power transistor BLT81 Test circuit information handbook, full pagewidth 50 Ω input C1 C2 L1 L2 C3 C4 L4 C6 L5 C5 C7 C8 L6 L8 DUT C10 L10 C11 C14 50 Ω output C13 L7 L9 R1 L3 VCC R2 C9 C12 MEA899 Fig.7 Common emitter test circuit for class-B operation at 900 MHz.
Philips Semiconductors Product specification UHF power transistor BLT81 List of components used in test circuit (see Figs 7 and 8) COMPONENT DESCRIPTION VALUE DIMENSIONS C1, C14 multilayer ceramic chip capacitor; note 1 100 pF C2 multilayer ceramic chip capacitor; note 1 3 pF C3, C5, C11, C13 film dielectric trimmer C4 multilayer ceramic chip capacitor; note 1 5.6 pF C6, C7, C10 multilayer ceramic chip capacitor; note 1 5.1 pF C8 multilayer ceramic chip capacitor; note 1 3.
Philips Semiconductors Product specification UHF power transistor BLT81 140 handbook, full pagewidth strap strap 80 rivets (14x) strap mounting screws (8x) strap VCC L9 L3 C12 C9 R1 C4 C2 C6 L1 C1 C3 R2 L2 L4 C5 L7 L5 L6 C7 C10 L8 C8 L10 C11 C14 C13 MEA898 Dimensions in mm. The components are situated on one side of the copper-clad PTFE fibre-glass board, the other side is unetched and serves as a ground plane.
Philips Semiconductors Product specification UHF power transistor BLT81 MRC091 10 Zi (Ω) MRC092 20 handbook, halfpage handbook, halfpage RL ZL (Ω) 8 16 ri 6 12 4 8 xi 2 XL 4 0 800 840 880 920 0 800 960 1000 f (MHz) 840 880 920 960 1000 f (MHz) Class-B; VCE = 7.5 V; PL = 1.2 W; Ts ≤ 60 °C. Class-B; VCE = 7.5 V; PL = 1.2 W; Ts ≤ 60 °C. Fig.9 Fig.10 Load impedance as a function of frequency (series components); typical values.
Philips Semiconductors Product specification UHF power transistor BLT81 PACKAGE OUTLINE 0.95 0.85 handbook, full pagewidth S 0.1 S seating plane 0.32 0.24 6.7 6.3 3.1 2.9 B 4 A 0.10 0.01 16 o max 16 3.7 3.3 1 2 10 max 0.80 0.60 2.3 4.6 Dimensions in mm. Fig.13 SOT223. 1996 May 09 7.3 6.7 o o 1.80 max 0.2 M A 10 3 0.
Philips Semiconductors Product specification UHF power transistor BLT81 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).
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