1/7June 2004
SD1487
RF POWER BIPOLAR TRANSISTORS
HF SSB APPLICATIONS
REV. 2
FEATURES SUMMARY
■30 MHz
■12.5 VOLTS
■IMD –30 dB
■COMMON EMITTER
■GOLD METALLIZATION
■POUT = 100 W MIN. WITH 12.0 dB GAIN
DESCRIPTION
The SD1487 is a 12.5 V Class C epitaxial silicon
NPN planar transistor designed primarily for HF
communications. This device utilizes state-of-the-
art diffused emitter ballasting to achieve extreme
ruggedness under severe operating conditions.
Figure 1. Package
Figure 2. Pin Connection
Table 1. Order Codes
.500 4L FL (M174)
epoxy sealed
1. Collector 3. Base
2. Emitter 4. Emitter
Order Codes Marking Package Packaging
SD1487 SD1487 M174 PLASTIC TRAYS
SD1487
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Table 2. Absolute Maximum Ratings (Tcase = 25°C)
Table 3. Thermal Data
ELECTRICAL SPECIFICATIONS (Tcase = 25°C)
Table 4. Static
Table 5. Dynamic
Note: 1. f = 30 + 30.001MHz
Symbol Parameter Value Unit
VCBO Collector-Base Voltage 36 V
VCEO Collector-Emitter Voltage 18 V
VEBO Emitter-Base Voltage 4.0 V
IC Device Current 20 A
PDISS Power Dissipation 290 W
TJ Junction Temperature +200 °C
TSTG Storage Temperature – 65 to +150 °C
Symbol Parameter Value Unit
RTH(j-c) Junction-Case Thermal Resistance 0.6 °C/W
Symbol Test Conditions
Value
Unit
Min. Typ. Max.
BVCBO IC = 100 mA; IE = 0 mA 36 — — V
BVCES IC = 100 mA; VBE = 0 V 36 — — V
BVCEO IC = 100 mA; IB = 0 mA 18 — — V
BVEBO IE = 20 mA; IC = 0 mA 4.0 — — V
ICES VCE = 15 V; IE = 0 mA — — 20 mA
hFE VCE = 5 V; IC = 5 A 10 — 200 —
Symbol Test Conditions
Value
Unit
Min. Typ. Max.
POUT f = 30 MHz; VCE = 12.5 V; ICQ = 150 mA 100 — — W
GPf = 30 MHz; VCE = 12.5 V; ICQ = 150 mA 11 13 — dB
IMD3(1) POUT = 100WPEP; VCE = 12.5 V; ICQ = 150 mA — — –30 dBc
COB f = 1 MHz; VCB = 12.5 V — 400 — pF
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SD1487
TYPICAL PERFORMANCE
Figure 3. Power Gain & Collector Efficiency vs
Power Input
Figure 4. IMD vs Power Output, Pep
Figure 5. Power Output vs Power Input
Table 6. Impedance Data (1)
Note: 1. POUT = 100 W PEP; VCE = 12.5 V
FREQ. ZIN (Ω)Z
CL (Ω)
30 MHz 0.57 + j 0.78 0.80 + j 0.43
SD1487
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TEST CIRCUIT
Figure 6. Test Circuit
Table 7. Test Circuit
C1 9 - 180pF Arco 463
C2 5 - 380pF Arco 465
C3 200pF Arco 465
C4, C6 170pF Arco 469
C7 0.1µF Ceramic Disc
C5, C8 1000pF Unelco
C9 10µF Electrolytic, 35Vdc
C10 1000µF Electrolytic, 35Vdc
L1 2 1/2 Turns, #14 AWG, I.D. Loose Wound
L2 16 Turns, #16 AWG, Enameled Wire on Micrometals Torroid #T-94
L3 Copper Strap 1/4" Widht, Length 1 1/2, Height 1/2"
L4 4 Turns, #16 AWG, Enameled Wire 3/8" I.D.
L5 5 Turns, #18 AWG on 1/4" I.D. Coil Form Length 1/2", Ferrite Slug
R1, R2, R3 1.5 Ohm, 1 Watt Carbon
5/7
SD1487
PACKAGE MECHANICAL
Table 8. M174 Mechanical Data
Figure 7. M174 Package Dimensions
Note: Drawing is not to scale.
Symbol millimeters inches
Min Typ Max Min Typ Max
A 5.59 5.84 0.220 0.230
B 3.18 0.125
C 6.22 6.48 0.245 0.255
D 18.28 18.54 0.720 0.730
E 3.18 0.125
F 24.64 24.89 0.970 0.980
G 12.57 12.83 0.495 0.505
H 0.08 0.18 0.003 0.007
I 2.29 2.79 0.090 0.110
J 4.06 4.45 0.160 0.175
K 7.11 0.280
L 26.67 1.050
SD1487
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REVISION HISTORY
Table 9. Revision History
Date Revision Description of Changes
November-1992 1 First Issue
7-June-2004 2 Stylesheet update. No content change.
7/7
SD1487
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