UM4300 / UM7300 SWITCHING / ATTENUATOR PIN DIODES DESCRIPTION KEY FEATURES The UM4300 and UM7300 series combine a diode chip of extremely thick intrinsic region with a low thermal resistance construction. This results in diodes uniquely applicable to very low distortion linear attenuators and specialized functions. The UM4300 series, with large cross-sectional chip area offers the highest power capability, of the two series. The UM7300 series offers lower capacitance. Both diode series are intended for use in linear attenuators operating from HF to beyond 1 GHz. Low distortion is a result of transit time frequencies below 5 MHz. Operated as RF switches, either diode series can be operated at low dc reverse bias voltages, to hold off much higher RF voltage levels. A Condition Useful frequency range extends below 500 kHz Power dissipation to 20 W (UM4300) Capacitance as low as 0.7 pF (UM7300) Voltage ratings to 1000V Non cavity design Thermally matched Isolated stud package available UM7300 UM4300 Pkg Extremely low distortion performance PD θ PD θ (W) (°C/W) (W) (°C/W) APPLICATIONS / BENEFITS 25 °C Pin Temperature 20 7.5 7.5 20 B&E ½ in. total length to 25 °C Contact Free Air 10 2.5 15 4 37.5 C 25 °C Stud Temperature 20 7.5 7.5 20 D 25 °C Stud Temperature 15 10 6 25 Surface Mount Versions 18 1 SM 25 °C End Cap Temperature ALL 1 us pulse (Single) 15 WWW . Microsemi . C O M ABSOLUTE MAXIMUM RATINGS AT 25º C (UNLESS OTHERWISE SPECIFIED) 20 5.5 500 kW RF Switching RF Attenuators Pick and Place compatible RoHS compliant packaging available: use UMX4301SM, etc 100 kW VOLTAGE RATINGS Reverse Voltage @ 10uA Part Number 100 UM4301 UM7301 200 UM4302 UM7302 600 UM4306 UM7306 1000 UM4310 UM7310 Copyright 2005 Rev: 3/30/2009 UM4300 / UM7300 IMPORTANT: For the most current data consult MICROSEMI’s website: www.MICROSEMI.com 1 - RoHS compliant versions of the UM4300 and UM7300 are available. Specify UMX4300 or UMX7300 for RoHS version. Consult factory for details. Microsemi Microwave Products 75 Technology Drive, Lowell MA 01851 Tel: (978) 442-5600 Page 1 UM4300 / UM7300 SWITCHING / ATTENUATOR PIN DIODES ELECTRICAL CHARACTERISTICS (@ 25°C unless otherwise specified) Parameter Symbol Conditions UM4300 UM7300 Units Reverse Current (Max) IR At rated voltage 10 10 Series Resistance(Max) RS If = 100 mA, F= 100 MHz 1.5 3.0 Ohms Series Resistance(Min) RS If = 10 uA, F= 100 MHz 1000 3000 Ohms Capacitance (Max) CT VR = 100 V, F = 1 MHZ 2.2 0.7 Parallel Resistance(Min) RP VR = 100 V, F = 100 MHz 200k 150k Carrier Lifetime(Min) τ IF = 10 mA 6.0 4.0 us I-Region Width (Min) W -- 250 250 um pF Ohms WWW . Microsemi . C O M TYPICAL RS VS IF uA TYPICAL IF VS VF TYPICAL 100 10-1 If (A) 10-2 UM4300 10-3 UM7300 10-4 10-5 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 Vf (V) RP VS VR (UM4300) RP VS VR (UM4300) 102 100 MHz 500 MHz Rp (kOhms) 1 GHz 3 GHz 101 GRAPHS 100 100 101 102 103 Vr (V) Copyright 2005 Rev: 3/30/2009 Microsemi Microwave Products 75 Technology Drive, Lowell MA 01851 Tel: (978) 442-5600 Page 2 UM4300 / UM7300 SWITCHING / ATTENUATOR PIN DIODES THERMAL IMP. VS PULSE WIDTH NORMALIZED RS VS TEMP. PULSE THERMAL IMPEDANCE ( C/W) 102 1 10 UM4300 0 10 UM7300 -1 10 10-2 -3 10 -6 10 -5 10 -4 -3 10 10 10 -2 -1 10 0 10 1.2 1.1 1.0 0.9 0.8 0.7 -60 -40 -20 0 20 40 60 80 100 120 o PULSE WIDTH (SEC) TEMPERATURE ( C) POWER DISS. VS LEAD TEMP. (UM4300) POWER DISS. VS LEAD TEMP. (UM7300) WWW . Microsemi . C O M NORMALIZED DIODE RESISTANCE 1.3 o POWER RATINGS (STUD PKG) 20 UM4300C 15 W 15 UM4300D 10 7.5 W UM7300C GRAPHS MAX POWER DISSIPATION (W) 18 W 6W 5 UM7300D 0 0 25 50 75 100 125 150 175 STUD TEMPERATURE (oC) Copyright 2005 Rev: 3/30/2009 Microsemi Microwave Products 75 Technology Drive, Lowell MA 01851 Tel: (978) 442-5600 Page 3 UM4300 / UM7300 SWITCHING / ATTENUATOR PIN DIODES PACKAGE STYLES STYLE ‘B’ STYLE ‘C’ STYLE ‘CR’ STYLE ‘D’ STYLE ‘DR’ STYLE ‘E’ STYLE ‘SM’ WWW . Microsemi . C O M STYLE ‘A’ MECHANICAL Copyright 2005 Rev: 3/30/2009 Microsemi Microwave Products 75 Technology Drive, Lowell MA 01851 Tel: (978) 442-5600 Page 4 UM4300 / UM7300 SWITCHING / ATTENUATOR PIN DIODES UM7300 STYLE ‘SM’ FOOTPRINT UM4300 Style SM, B Size Footprint 1. These dimensions will match the terminals and provide for additional solder fillets at the outboard ends at least as wide as the terminals themselves, assuming accuracy of placement within 0.005” 2. If the mounting method chosen requires use of an adhesive separate from the solder compound, a round (or square) spot of cement as shown should be centrally located. WWW . Microsemi . C O M UM7300 Style SM, A Size Footprint UM4300 STYLE ‘SM’ FOOTPRINT MECHANICAL Copyright 2005 Rev: 3/30/2009 Microsemi Microwave Products 75 Technology Drive, Lowell MA 01851 Tel: (978) 442-5600 Page 5