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Ordering number:EN4644
PNP Epitaxial Planar Silicon Transistor
2SA1857
FM, RF, MIX, IF Amplifier High-Frequency
General-Purpose Amplifier Applications
Features
· High power gain : PG=25dB typ (f=100MHz).
· High cutoff frequency : fT=750MHz typ.
· Low collector-to-emitter saturation voltage.
· Complementary pair with the 2SC4400.
Specifications
Absolute Maximum Ratings at Ta = 25˚C
retemaraPlobmySsnoitidnoCsgnitaRtinU
egatloVesaB-ot-rotcelloCV
egatloVrettimE-ot-rotcelloCV
egatloVesaB-ot-rettimEV
tnerruCrotcelloCI
noitapissiDrotcelloCP
erutarepmeTnoitcnuJjT 051
erutarepmeTegarotSgtsT 051+ot55–
C
C
Package Dimensions
unit:mm
2059A
[2SA1857]
1 : Base
2 : Emitter
3 : Collector
SANYO : MCP
OBC
OEC
OBE
51–V
21–V
3–V
05–Am
051Wm
˚C
˚C
Electrical Characteristics at Ta = 25˚C
retemaraPlobmySsnoitidnoC
tnerruCffotuCrotcelloCI
tnerruCffotuCrettimEI
niaGtnerruCCDh
tcudorPhtdiwdnaB-niaGf
ecnaticapaCtuptuOC
ecnaticapsaCrefsnarTesreveRerCV
egatloVnoitarutaSrettimE-ot-rotcelloCV
niaGrewoPGPVECI,V01–=
V
OBC
V
OBE
V
EF
V
T
V
bo
I
)tas(EC
C
I,V21–=
BC
BE
EC
EC
BC
BC
0=1.0–Aµ
E
I,V2–=
0=1.0–Aµ
C
I,V01–=
Am5–=*06*072
C
I,V01–=
Am5–=057zHM
C
zHM1=f,V01–=2.16.1Fp
zHM1=f,V01–=9.0Fp
I,Am01–=
Am1–=1.0–3.0–V
B
C
* : The 2SA1857 is classified by 5mA hFE as follows : Marking : JS
0213060814090725531
hFE rank : 3, 4, 5
Any and all SANYO products described or contained herein do not have specifications that can handle
applications that require extremely high levels of reliability, such as life-support systems, aircraft’s
control systems, or other applications whose failure can be reasonably expected to result in serious
physical and/or material damage. Consult with your SANYO representative nearest you before using
any SANYO products described or contained herein in such applications.
SANYO assumes no responsibility for equipment failures that result from using products at values that
exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges,or other
parameters) listed in products specifications of any and all SANYO products described or contained
herein.
zHM001=f,Am01–=52Bd
nimpytxam
SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquaters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
91098HA (KT)/31594HO (KOTO) AX-8847 No.4644–1/3
sgnitaR
tinU
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PG T est Circuit
L1 : 1mmø plated wire 10mmø 5T, pitch 15mm, tap : 2T from base side
L2 : 1mmø plated wire 10mmø 7T, pitch 10mm, tap : 2T from VC side
L3 : 1mmø plated wire 10mmø 3T, pitch 10mm
2SA1857
Unit (capacitance : F)
No.4644–2/3