BF421
- Les principales caractéristique des transistors bipolaires. Caractéristiques techniques. Répertoire mondial des transistors. Marquage composant: BF421
Matériau utilisé: Si
Polarité du transistor: PNP
Puissance dissipable maximale pour une température du boitier de 25°C (Pc): 0.83
Tension collecteur–base (maximale) Ucb: 300
Tension maximale de VCE au delà de laquelle le transistor risque d'être détruit (Uce): 300
Tension émetteur–base (maximale) Ueb: 5
Courant collecteur maximal (Ic): 0.025
Température maximale de jonction (Tj), °C: 150
Fréquence maximale de fonctionnement fT: 60
Capacite collecteur (Cc), pF: 1.6
Gain en courant DC hFE (hfe): 50
Boitier: TO92
Recherche équivalences (un remplaçant pour le transistor BF421
) BF421
- Fiche technique PDF, Datasheet
1.1. bf421_bf423.pdf  Size:119K _motorola  |
 | REAKDOWN
TJ = 150°C
LIMITATION
0
–5.0
–1.0 –2.0 –5.0 –10 –20 –50 –100 –3.0 –5.0 –10 –20 –30 –50 –100 –200 –300
IC, COLLECTOR CURRENT (mA)
VCE, COLLECTOR–EMITTER VOLTAGE (VOLTS)
Figure 4. “On” Voltages
Figure 5. Active Region — Safe Operating Area
Motorola Small–Signal Transistors, FETs and Diodes Device Data 3
FE
h
, DC CURRENT GAIN
C, CAPACITANCE (pF)
T
f , CURRENT–GAIN — BANDWIDTH PRODUCT (MHz)
V, VOLTAGE (VOLTS)
C
I , COLLECTOR CURRENT (mA)
BF421 BF423
PACKAGE DIMENSIONS |
1.2. bf421l_bf423l.pdf Size:47K _philips  |
 | sheet status
Objective specification This data sheet contains target or goal specifications for product development.
Preliminary specification This data sheet contains preliminary data; supplementary data may be published later.
Product specification This data sheet contains final product specifications.
Limiting values
Limiting values given are in accordance with the Absolute Maximum Rating System (IEC 134). Stress above one or
more of the limiting values may cause permanent damage to th |
1.3. bf421_bf423_2.pdf Size:51K _philips  |
 | L
b
1
e1
2
e
D
3
b1
L1
0 2.5 5 mm
scale
DIMENSIONS (mm are the original dimensions)
L1(1)
UNIT A b b1 c D d E e e1 L
max.
5.2 0.48 0.66 0.45 4.8 1.7 4.2 14.5
mm 2.54 1.27 2.5
5.0 0.40 0.55 0.38 4.4 1.4 3.6 12.7
Note
1. Terminal dimensions within this zone are uncontrolled to allow for flow of plastic and terminal irregularities.
REFERENCES
EUROPEAN
OUTLINE
ISSUE DATE
PROJECTION
VERSION
IEC JEDEC JEITA
97-02-28
SOT54 TO-92 SC-43A
04-06-28
2004 Nov 10 4
Philips |
1.4. bf421_bf423.pdf Size:48K _philips  |
 | this zone are uncontrolled.
Fig.2 TO-92.
DEFINITIONS
Data sheet status
Objective specification This data sheet contains target or goal specifications for product development.
Preliminary specification This data sheet contains preliminary data; supplementary data may be published later.
Product specification This data sheet contains final product specifications.
Limiting values
Limiting values given are in accordance with the Absolute Maximum Rating System (IEC 134). Stress above one or
|
1.5. bf421_bf423_1.pdf Size:62K _philips  |
 | this zone are uncontrolled.
Fig.2 TO-92.
DEFINITIONS
Data sheet status
Objective specification This data sheet contains target or goal specifications for product development.
Preliminary specification This data sheet contains preliminary data; supplementary data may be published later.
Product specification This data sheet contains final product specifications.
Limiting values
Limiting values given are in accordance with the Absolute Maximum Rating System (IEC 134). Stress above one or
|
1.6. bf421.pdf Size:71K _st  |
 | 689 0.709 0.748
W0 5.70 6.00 6.30 0.224 0.236 0.248
W1 8.50 9.00 9.25 0.335 0.354 0.364
W2 0.50 0.020
H 18.50 20.50 0.728 0.807
H0 15.50 16.00 16.50 0.610 0.630 0.650
H1 25.00 0.984
D0 3.80 4.00 4.20 0.150 0.157 0.165
t 0.90 0.035
L 11.00 0.433
I1 3.00 0.118
delta P -1.00 1.00 -0.039 0.039
4/5
Obsolete Product(s) - Obsolete Product(s)
Obsolete Product(s) - Obsolete Product(s)
BF421
Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes |
1.7. bf421_bf423.pdf Size:136K _siemens 1.8. bf421_bf423.pdf Size:105K _onsemi  |
 | ulse Width v 300 ms; Duty Cycle v 2.0%.
300
VCE = 10 Vdc
TJ = +125°C
250
200
25°C
150
-55°C
100
50
0
0.1 1.0 10 100
IC, COLLECTOR CURRENT (mA)
Figure 1. DC Current Gain
http://onsemi.com
2
FE
h
, DC CURRENT GAIN
BF421, BF423
100
150
Cib @ 1MHz
130
110
10
90
Ccb @ 1MHz
70
1.0
50
TJ = 25°C
VCE = 20 Vdc
30
F = 20 MHz
0.1
10
0.1 1.0 10 100 1000
1 3 5 7 9 11 13 15 17 19 21
VR, REVERSE VOLTAGE (VOLTS)
IC, COLLECTOR CURRENT (mA)
Figure 2. Capacitance
Figure 3 |
1.9. bf421.pdf Size:42K _kec  |
 | AX.(CONTINUOUS)
-50
*
600 -30
400
-10
200 -5
SINGLE NONREPETITIVE
-3
*
PULSE Ta=25 C
0
CURVES MUST BE DERATED
0 40 80 120 160 200
LINEARLY WITH INCREASE
-1
IN TEMPERATURE.
AMBIENT TEMPERATURE Ta ( C)
-0.5
-3 -10 -30 -100 -300
COLLECTOR-EMITTER VOLTAGE VCE (V)
2002. 6. 25 Revision No : 3 3/3
ob
re
T
TRANSITION FREQUENCY f
(MHz)
COLLECTOR OUTPUT CAPACITANCE C
(pF)
REVERSE TRANSFER CAPACITANCE C
(pF)
C
C
P
(mW)
COLLECTOR POWER DISSIPATION
COLLECTOR CURRENT I
(mA |
1.10. bf421-423.pdf Size:274K _lge D'autres types de transistors... BF418G
, BF419
, BF420
, BF420A
, BF420L
, BF420P
, BF420P3
, BF420S
, BC157
, BF421A
, BF421L
, BF421P
, BF421P3
, BF421S
, BF422
, BF422A
, BF422L
.
|
