BLV57 View Datasheet(PDF) - Philips Electronics
Part Name
Description
View to exact match
BLV57 Datasheet PDF : 24 Pages
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Philips Semiconductors
UHF linear push-pull power transistor
Product specification
BLV57
FEATURES
• internally matched input for wideband operation and
high power gain
• internal midpoint (r.f. ground) reduces negative
feedback and improves power gain
• increased input and output impedances (compared with
single-ended transistors) simplify wideband matching
• length of the external emitter leads is not critical
• diffused emitter ballasting resistors for an optimum
temperature profile
• gold metallization ensures excellent reliability.
PINNING - SOT161A
PIN
SYMBOL
DESCRIPTION
1
e
emitter
2
e
emitter
3
c2
collector 2
4
b2
base 2
5
c1
collector 1
6
b1
base 1
7
e
emitter
8
e
emitter
DESCRIPTION
Two n-p-n silicon planar epitaxial transistor sections in one
package to be used as push-pull amplifier, primarily
intended for use in linear u.h.f. television transmitters and
transposers.
The package is an 8-lead flange type with a ceramic cap.
All leads are isolated from the flange.
handbook, halfpage
1
2
3
4
5
6
7
8
Top view
MBC826
Fig.1 Simplified outline and symbol.
QUICK REFERENCE DATA
R.F. performance in linear amplifier
MODE OF
OPERATION
fvision
MHz
VCE
V
class-A
860
25
class-AB
860
25
IC1 = IC2
A
IC(ZS)
A
0,85
−
1,25 2 × 0,1
Th
dim(1) Po sync(1)
PL
Gp
°C
dB
W
W
dB
70 −60
〉6
25 −55 typ. 12
−
〉 8,0
typ. 9,0
25
−
−
typ. 38(2) typ. 6,5(2)
Notes
1. Three-tone test method (vision carrier −8 dB, sound carrier −7 dB, sideband signal −16 dB), zero dB corresponds to
peak sync level.
2. Power gain compression is 1 dB.
WARNING
Product and environmental safety - toxic materials
This product contains beryllium oxide. The product is entirely safe provided that the BeO disc is not damaged.
All persons who handle, use or dispose of this product should be aware of its nature and of the necessary safety
precautions. After use, dispose of as chemical or special waste according to the regulations applying at the location of
the user. It must never be thrown out with the general or domestic waste.
1998 Feb 09
2
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