BLW81
BLW81 is UHF power transistor manufactured by NXP Semiconductors.
DESCRIPTION
N-P-N silicon planar epitaxial transistor intended for transmitting applications in class-A, B or C in the u.h.f. and v.h.f. range for a nominal supply voltages up to 13,5 V. The resistance stabilization of the transistor provides protection against device damage at severe load mismatch conditions.
The transistor is housed in a 1⁄4" capstan envelope with a ceramic cap.
Product specification
QUICK REFERENCE DATA R.F. performance up to Th = 25 °C in an unneutralized mon-emitter class-B circuit
MODE OF OPERATION
VCE V f MHz
PL W
Gp d B
η % c.w. 12,5 470 10 > 6,0 > 60 c.w. 12,5 175 10 typ. 13,5 typ. 60 zi Ω
1,3 + j2,5 1,2
- j0,6
YL m S
- j66 140
- j80
PIN CONFIGURATION handbook, halfpage
4 1
PINNING
- SOT122A.
PIN DESCRIPTION
1 collector 2 emitter 3 base 4 emitter
Top view
MBK187
Fig.1 Simplified outline. SOT122A.
PRODUCT SAFETY This device incorporates beryllium oxide, the dust of which is toxic. The device is entirely safe provided that the Be O disc is not damaged.
March 1993
Philips Semiconductors
UHF power transistor
RATINGS Limiting values in accordance with the Absolute Maximum System (IEC 134)
Collector-emitter voltage (VBE = 0) peak value
Collector-emitter voltage (open base) Emitter-base voltage (open collector) Collector current (d.c. or average) Collector current (peak value); f > 1 MHz R.F. power dissipation (f > 1 MHz); Tmb = 25 °C Storage temperature Operating junction temperature
VCESM VCEO VEBO IC ICM Ptot Tstg Tj
Product specification
BLW81 max 36 V max 17 V max 4 V max 2,5 A max 7,5 A max 40 W
- 65 to +150 °C max 200 °C handbook,1h0alfpage
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