MRF557.PDF 10-25-99
MRF557
RF & MICROWAVE DISCRETE
LOW POWER TRANSISTORS
DESCRIPTION: Designed primarily for wideband large signal stages in
the UHF frequency range.
ABSOLUTE MAXIMUM RATINGS (Tcase = 25°°C)
Symbol Parameter Value Unit
VCEO Collector-Emitter Voltage 16 Vdc
VCBO Collector-Base Voltage 30 Vdc
VEBO Emitter-Base Voltage 3.0 Vdc
ICCollector Current 500 mA
Thermal Data
PDTotal Device Dissipation @ TC = 75°C
Derate above 75°C3.0
40 Watts
mW/ °C
Power Macro
Features
• Specified @ 12.5 V, 870 MHz Characteristics
• Output Power = 1.5 W
• Minimum Gain = 8 dB
• Efficiency 60% (Typ)
• Cost Effective PowerMacro Package
• Electroless Tin Plated Leads for Improved Solderability
140 COMMERCE DRIVE
MONTGOMERYVILLE, PA
18936-1013
PHONE: (215) 631-9840
FAX: (215) 631-9855
MRF557.PDF 10-25-99
MRF557
ELECTRICAL SPECIFICATIONS (Tcase = 25°°C)
STATIC
Symbol Test Conditions Value
Min. Typ. Max. Unit
BVCEO Collector-Emitter Breakdown Voltage
(IC = 5 mAdc, IB = 0) 16 - - Vdc
BVCES Collector-Emitter Sustaining Voltage
(IC = 5.0 mAdc, IB = 0) 30 - - Vdc
BVEBO Emitter-Base Breakdown Voltage
(IE = 0.1 mAdc, IC = 0) 3.0 - - Vdc
ICES Collector Cutoff Current
(VCE = 15 Vdc, VBE = 0 Vdc) - - 5mA
HFE DC Current Gain
(IC = 100 mA, VCE = 5.0 Vdc) Both 50 -200 -
DYNAMIC
Symbol Test Conditions Value
Min. Typ. Max. Unit
COB Output Capacitance
(VCB = 10 Vdc, IE = 0, f = 1.0 MHz) ---- 5.5 pF
MRF557.PDF 10-25-99
MRF557
FUNCTIONAL
Symbol Test Conditions Value
Min. Typ. Max. Unit
GPE Power Gain Test Circuit-Figure 1
Pout = 1.5 W, VCE =12.5Vdc
f = 870 MHz 8 9 -dB
ηCollector Efficiency Test Circuit-Figure 1
Pout = 1.5 W, VCE =12.5Vdc
f = 870 MHz 55 60 -%
ψLoad Mismatch
VSWR ≥ 10:1 All Phase Angles Test Circuit-Figure 1
Pout = 1.5 W, VCE =12.5Vdc
f = 870 MHz No Degradation in Output Power -
MRF557.PDF 10-25-99
MRF557
Efficiency (%)
GPE Freq (MHz)
Freq (MHz)
Gu Max (dB)
IC max (
mA)
Package
Device
IC max (mA)
RF (Low Power PA / General Purpose) Selection Guide
MACRO X MRF559 NPN 870 0.5 6.5 70 7.5 16 150
MACRO X MRF559 NPN 870 0.5 9.5 65 12.5 16 150
SO-8 MRF8372,R1,R2 NPN 870 0.75 8 55 12.5 16 200
POWER MACRO MRF557 NPN 870 1.5 8 55 12.5 16 400
POWER MACRO MRF557T NPN 870 1.5 8 55 12.5 16 400
MACRO X MRF559 NPN 512 0.5 10 65 7.5 16 150
MACRO X MRF559 NPN 512 0.5 13 60 12.5 16 150
TO-39 2N3866A NPN 400 1 10 45 28 30 400
SO-8 MRF3866, R1, R2 NPN 400 1 10 45 28 30 400
POWER MACRO MRF555 NPN 470 1.5 11 50 12.5 16 400
POWER MACRO MRF555T NPN 470 1.5 11 50 12.5 16 400
SO-8 MRF4427, R2 NPN 175 0.15 18 60 12 20 400
TO-39 2N4427 NPN 175 1 10 50 12 20 400
POWER MACRO MRF553 NPN 175 1.5 11.5 60 12.5 16 500
POWER MACRO MRF553T NPN 175 1.5 11.5 50 12.5 16 500
TO-39 MRF607 NPN 175 1.75 11.5 50 12.5 16 330
TO-39 2N6255 NPN 175 3 7.8 50 12.5 18 1000
TO-72 2N5179 NPN 200 20 6 12 50
Pout (watts)
GPE (dB)
GPE VCC
Type
Package
Device
Type
NF (dB)
NF IC (
mA)
NF VCE
GN (dB)
Ftau (MHz)
Ccb
(pF)
BVCEO
TO-39 2N5109 NPN 200 3 10 15 12 1200 3.5 20 400
TO-39 MRF5943C NPN 200 3.4 30 15 11.4 1000 30 400
SO-8 MRF5943, R1, R2 NPN 200 3.4 30 15 15 1300 30 400
TO-72 2N5179 NPN 200 4.5 1.5 6 17 900 1 12 50
TO-72 2N2857 NPN 300 5.5 50 6 13 1600 1 15 40
TO-39 MRF517 NPN 300 7.5 50 15 5.5 4600 3 25 150
TO-72 MRF904 NPN 450 1.5 5 6 11 4000 1 15 30
TO-72 2N6304 NPN 450 5 2 5 14 1400 1 15 50
MACRO T BFR91 NPN 500 1.9 2 5 11 16.5 5000 1 12 35
MACRO T BFR96 NPN 500 2 10 10 14.5 500 2.6 15 100
SO-8 MRF5812, R1, R2 NPN 500 2 50 10 15.5 17.8 5000 15 200
MACRO X MRF581A NPN 500 2 50 10 14 15 5000 15 200
Macro BFR90 NPN 500 2.4 2 10 15 18 5000 1 15 30
TO-72 BFY90 NPN 500 2.5 2 5 20 1300 15 50
TO-72 MRF914 NPN 500 2.5 5 10 15 4500 12 40
MACRO X MRF581 NPN 500 2.5 50 10 15 17.8 5000 16 200
TO-39 MRF586 NPN 500 3 90 15 11 14.5 4500 2.2 17 200
MACRO X MRF951 NPN 1000 1.3 5 6 14 17 8000 0.45 10 100
MACRO X MRF571 NPN 1000 1.5 10 6 10 8000 1 10 70
MACRO T BFR91 NPN 1000 2.5 2 5 8 11 5000 1 12 35
MACRO T BFR90 NPN 1000 3 2 10 10 12.5 5000 1 15 30
TO-39 MRF545 PNP 14 1400 2 70 400
TO-39 MRF544 NPN 13.5 1500 70 400
RF (LNA / General Purpose) Selection Guide
2
1
2
3
4
3
4
1
4
8
Macro X
Power Macro
Macro T SO-8
RF Low Power PA, LNA, and General Purpose Discrete Selector Guide
Low Cost RF Plastic Package Options
MRF557.PDF 10-25-99
MRF557
PACKAGE MECHANICAL DATA
1.
2.
3.
4.
PIN 1. COLLECTOR
2. EMITTER
3. BASE
4. EMITTER
