2N4125
PNP General Purpose Amplifier
2N4125
This device is designed for use as general purpose amplifiers
and switches requiring collector currents of 10 µA to 100 mA.
Absolute Maximum Ratings* TA = 25°C unless otherwise noted
*These ratings are limiting values above which the serviceability of any semiconductor device may be impaired.
NOTES:
1) These ratings are based on a maximum junction temperature of 150 degrees C.
2) These are steady state limits. The factory should be consulted on applications involving pulsed or low duty cycle operations.
Thermal Characteristics TA = 25°C unless otherwise noted
Symbol Parameter Value Units
VCEO Collec tor- Emitter Voltage 30 V
VCBO Coll ec tor- Base Volt age 30 V
VEBO Emit ter- Base Voltage 4.0 V
ICC ol lector Current - Cont inuous 200 m A
TJ, Tstg Oper at ing and S torage Juncti on Tem perature Range -55 to +150 °C
Symbol Characteristic Max Units
2N4125
PDTot al Device D issipation
Der ate above 25°C625
5.0 mW
mW/°C
RθJC Therm al Resi stance, Junct i on to Cas e 83.3 °C/W
RθJA Thermal Resi stance, J unct i on to A mbient 200 °C/W
CBETO-92
2001 Fairchild Semiconductor Corporation
2N4125, Rev A
2N4125
PNP General Purpose Amplifier
(continued)
Electrical Characteristics TA = 25°C unless otherwise noted
OFF CHARACTERISTICS
Sy mb ol Pa rameter Test Conditions Min Max Un its
V(BR)CEO Collec tor-Emitter Break down
Voltage* IC = 1.0 m A, IB = 0 30 V
V(BR)CBO Col lector- Base B reakdown Voltage IC = 10 µA, IE = 0 30 V
V(BR)EBO Emitt er -Base Breakdow n Voltage IE = 10 µA, IC = 0 4.0 V
ICBO Colle ct o r-C u toff Cur ren t VCB = 20 V, IE = 0 50 nA
IEBO Emitter-Cutoff Current VEB = 3.0 V, IC = 0 50 nA
ON CHARACTERISTICS*
hFE DC Current Gain VCE = 1.0 V, IC = 2. 0 mA
VCE = 1 .0 V, IC = 50 mA 50
25 150
VCE(sat)C oll ector- Emitter Saturation Voltage IC = 50 mA, IB = 5. 0 m A 0.4 V
VBE(sat)Base-Emitter Saturation Voltage IC = 50 mA , IB = 5. 0 m A 0.95 V
SMALL SIGNAL CHARACTERISTICS
Cob Output Capacitance VCB = 5.0 V, f = 100 kHz 4. 5 pF
Cib Input Capacitance VBE = 0.5 V, f = 100 kHz 10 pF
hfe Small-Signal Cur rent Gain IC = 2.0 m A, VCE = 10 V ,
f = 1.0 kH z
IC = 10 m A, VCE = 20 V ,
f = 100 MHz
50
2.0
200
NF Noise Figure VCE = 5.0 V, IC = 100 µA,
RS = 1.0 k Ω,
f = 10Hz to 15.7 kHz,
5.0 dB
*Pulse Test: Pulse Width ≤ 300 µs, Duty Cycle ≤ 2.0%
2N4125
Typical Characteristics
Common-B ase Op en Circuit
Input and O ut put Capacit ance
vs Rever se Bias Vol tage
0.1 1 10
0
2
4
6
8
10
REVERSE BIAS VOLT AGE (V)
CAPACITANCE (pF)
Cobo
C
ibo
PNP General Purpose Amplifier
(continued)
Typi cal Pu lsed Cu rr en t Gain
vs Colle c t or Curre n t
0.1 0.2 0.5 1 2 5 10 20 50 100
50
100
150
200
250
I - COLLECTOR CURRENT (mA )
h - TYPICA L PULSED CURRENT GAIN
C
FE
125 ° C
25 ° C
- 40 °C
V = 1.0V
CE
Colle c t or- E mit te r Sat ura t ion
V olta ge vs Collector Current
110100200
0
0.05
0.1
0.15
0.2
0.25
0.3
I - COLLECTOR CURRE NT (mA)
V - COLLEC TOR EMITTE R VOLTAGE (V)
C
CESAT
25 °C
- 4 0 °C
125°C
β= 10
B ase-Emitter Sat uratio n
Vo lt ag e vs C o llector Cu rrent
110100200
0
0.2
0.4
0.6
0.8
1
I - COLLECTOR CURRENT (mA)
V - BA SE EMITTER VOLTAGE (V)
C
BESAT
β= 10
25 °C
- 40 °C
125 °C
Base Emitter ON Voltage vs
Collect or Curre nt
0.1 1 10 25
0
0.2
0.4
0.6
0.8
1
I - COLLECTOR CURRE NT (mA)
V - B ASE EMITTER ON VOLTA GE (V)
C
BE(ON)
V = 1V
CE
25 °C
- 4 0 °C
125 °C
C o ll ector -C uto ff Cu r rent
vs A mb ient Temperatu re
25 50 75 100 125
0.01
0.1
1
10
100
T - AM BIENT TEMP E RATURE ( C)
I - COLLE CTOR CURRENT (nA)
A
CBO
°
V = 25V
CB
Power Dissipation vs
Ambient Temperature
0 25 50 75 100 125 150
0
0.25
0.5
0.75
1
TEMPERATUR E ( C)
P - PO WER DISSIPATION (W )
D
o
SOT-223
SOT-23
TO-92
Typical Characteristics (continued)
Nois e Figur e vs Fre que ncy
0.1 1 10 100
0
1
2
3
4
5
6
f - FREQUENCY (kHz)
NF - NOIS E FIGURE ( d B)
I = 100 µA, R = 200Ω
C
V = 5.0V
CE
S
I = 100 µA, R = 2.0 kΩ
CS
I = 1.0 mA, R = 200Ω
CS
Nois e Figur e vs Source R e sis tan ce
0.1 1 10 100
0
2
4
6
8
10
12
R - SOURCE RESIS TAN CE ( )
NF - NOISE FIGURE (dB)
kΩ
I = 100 µA
C
V = 5.0V
f = 1.0 kHz
CE
I = 1.0 mA
C
S
Switching Times
vs Collec to r C urren t
1 10 100
1
10
100
500
I - COLLECTOR CURRENT (m A)
TIME (nS)
I = I = tr
t
s
B1
C
B2 Ic
10
tf
td
Tu rn On and Turn Off Tim es
vs Collector Current
1 10 100
1
10
100
500
I - COLL E CTOR CURR ENT ( mA )
TIME (nS)
I = I =
t
off
B1 B2 Ic
10
t
on
V = 0.5V
BE(OFF)
t I =
on
t
off
B1 Ic
10
2N4125
PNP General Purpose Amplifier
(continued)
2N4125
Typical Characteristics (continued)
PNP General Purpose Amplifier
(continued)
Input Impeda nce
0.1 1 10
0.1
1
10
I - COL LE CT OR CU RR ENT ( mA)
h - INPUT IMPEDANCE ( k )
V = 10 V
CE
C
ie
f = 1.0 kH z
Ω
Outp ut Admi tta n ce
0.1 1 10
10
100
1000
I - COL LECTOR CURRENT ( mA)
h - OUTPUT ADMITTANCE ( mhos)
V = 10 V
CE
C
oe
f = 1.0 kH z
µ
Cur rent Gain
0.1 1 10
10
20
50
100
200
500
1000
I - COLLECTOR CURRENT (mA)
h - CURRENT GAIN
V = 10 V
CE
C
fe
f = 1.0 kHz
Vol tage Feedback Ratio
0.1 1 10
1
10
100
I - COLLE CTOR CURRENT (mA)
h - VOLTAGE FEE DBACK RATIO (x10 )
C
re
_4
TO-92 Tape and Reel Data
March 2001, Rev. B1
©2001 Fairchild Semiconductor Corporation
TO-92 Packaging
Configuration: Figure 1.0
AMMO PACK OPTION
See Fig 3.0 for 2 Ammo
Pack Options
2000 units per
EO70 box for
std option
FSCINT Label
530mm x 130m m x
83mm
Inter med iate box
10,000 units maximum
per
intermediate box
for std option
FSCINT Label
114mm x 102m m x 51mm
Immed iate Box
Anti-static
Bubble Sheets
(TO-92) BULK PACKING INFORMATION
EOL
CODE DESCRIPTION LEADCLIP
DIMENSION QUANTITY
J18Z TO-18 OPTION STD NO LEAD CLIP 2.0 K / BOX
J05Z TO-5 OPTION STD NO LEAD CLIP 1.5 K / BOX
NO EOL
CODE TO-92 STANDARD
STRAIGHT FOR: PKG 92, NO LEADCLIP 2.0 K / BOX
BULK OPTION
See Bulk Packing
Information table
375mm x 267m m x 375mm
Inter med iate Box
FSCINT
Label
Customized
Label
333mm x 231m m x 183mm
Inter med iate Box
FSCINT
Label
Customized
Label
TO-92 TNR/AMMO PACKING INFROMATION
Packing Style Qua n tity EOL co d e
Reel A 2,000 D26Z
E2,000 D27Z
Ammo M 2,000 D74Z
P2,000 D75Z
U nit weight = 0.22 g m
Reel weig ht with components = 1.04 kg
Ammo we ight with com p onents = 1 .0 2 kg
Max q uantity per interme d iate b ox = 10,000 u n its
F63TNR
Label
5 Ammo boxes per
Inter med iate Box
Customized
Label
327mm x 158m m x 135mm
Immed iate Box
LOT:
CBVK741B019
NSID:
PN2222N
D/C1:
D9842
SPEC RE V:
B2
SPEC:
QTY:
10000
QA REV:
FAIRCHILD SEMICONDUCTOR CORPORATI ON
HTB:B
(FSCINT)
F63TNR
Label
Customized
Label
5 Reels per
Inter med iate Box
TAPE and REEL OPTION
See Fig 2.0 for various
Reeling Styles
LOT: CBVK74 1B019
FS ID: PN 2 22N
D/C1: D9842 QTY1: SPEC REV:
SPEC:
QTY: 2000
D/C2: QTY2: CPN: N/F: F (F63TNR)3
F63TNR Label sample
FSCINT Label sample
C
5 EO70 boxes per
intermediate Box
ustomized
Label
94 (NON PROELECTRON
SERIES), 96
L34Z TO-92 STANDARD
STRAIGHT FOR: PKG 94 NO LEADCLIP 2.0 K / BOX
(PROELECTRON SERIES
BCXXX, BFXXX, BSRXXX),
97, 98
TO-92 Tape and Reel Data, continued
September 1999, Rev. B
TO-92 Reeling Style
Configuration: Figure 2.0
Style “A”, D26Z, D70 Z (s/h)
Machine Op tion “A” (H)
Style “E ”, D2 7Z, D 71Z (s/ h)
Machine Option “E” (J)
FIRST WIRE OFF IS EMITTER
ADHESIVE TAPE IS ON THE TOP SIDE
FLAT OF TRANSISTO R IS ON BOTTOM
ORDER STYLE
D75Z (P)
FIRST WIRE OFF IS COL LECTOR
ADHESIVE TAPE IS ON THE TOP SIDE
FLAT OF TRANSISTO R IS ON TOP
ORDER STYLE
D74Z (M)
TO-92 Radial Ammo Packaging
Configuration: Figure 3.0
FIRST WIRE OFF IS EMITTER (ON PKG. 92)
ADHESIVE TAPE IS ON BOTTOM SIDE
FLAT OF TRANSISTOR IS ON BOTTOM
FIRST WIRE OFF IS COLLECTOR (ON PKG. 92)
ADHESIVE TAPE IS ON BOTTOM SIDE
FLAT OF TRANSISTOR IS ON TOP
ITEM DESCRIPTION
Base of Package to Lead Bend
Com p on en t Heig ht
Lead Clinch Height
Com p on en t Ba s e He ig ht
Com p on en t Al ig nm e nt ( sid e/s id e )
Com p on en t Al ig nm e nt ( front/bac k )
Com p on en t Pitc h
Feed Hole Pi tch
Hole C enter to First Lead
Hole Center to Component Center
Lead Spread
Lead Thickness
Cut Lead Length
Taped Lead Le ngth
Taped Lead Thickness
Carrier Tape Thickness
Carrier Tape Width
Hold - down Tape Width
Hold - down Tape position
Feed Hole Position
Sprocket Hole Diameter
Lead Spring Out
SYMBOL
b
Ha
HO
H1
Pd
Hd
P
PO
P1
P2
F1/F2
d
L
L1
t
t1
W
WO
W1
W2
DO
S
DIMENSION
0. 09 8 (m ax )
0. 92 8 (+ /- 0.025)
0. 63 0 (+ /- 0.020)
0. 74 8 (+ /- 0.020)
0. 04 0 (m ax )
0. 03 1 (m ax )
0. 50 0 (+ /- 0.020)
0. 50 0 (+ /- 0.008)
0. 15 0 (+ 0 .00 9, -0.0 10 )
0. 24 7 (+ /- 0.007)
0. 10 4 (+ /- 0 . 01 0)
0. 01 8 (+ 0 .00 2, -0.0 03 )
0. 42 9 (m ax )
0. 20 9 (+ 0 .05 1, -0.0 52 )
0. 03 2 (+ /- 0.006)
0. 02 1 (+ /- 0.006)
0. 70 8 (+ 0 .02 0, -0.0 19 )
0. 23 6 (+ /- 0.012)
0. 03 5 (m ax )
0. 36 0 (+ /- 0.025)
0. 15 7 (+ 0 .00 8, -0.0 07 )
0. 00 4 (m ax )
Note : All d imensions are in inc hes.
ITEM DESCRIPTION SYSMBOL MINIMUM MAXIMUM
Ree l Di am e ter D1 13. 9 75 14. 02 5
Arb or Hol e Di am et er (S ta nd ard) D2 1.16 0 1.200
(Small Hole) D2 0.650 0.700
Core Diameter D3 3.100 3.300
Hub Recess Inner Diameter D4 2.700 3.100
Hub Recess Depth W1 0.370 0.570
Flange to Flange Inner Width W2 1 .630 1.690
Hub to Hub Center Width W3 2.090
Note: All dimensions are inches
TO-92 Tape and Reel Taping
Dimension Configuration: Figure 4.0
Ha
H1 HO
PO
P2
P1 F1
DO
P Pd
b
d
L1
LS
WO W2
W
t
t1
Hd
W1
TO-92 Reel
Configuration: Figure 5.0
User D ire c tion of Feed
SENS ITIVE DEVICES
ELECTROSTATIC
D1
D3
Customized Labe l
W2
W1 W3
F63 TNR Label
D4
D2
TO-92 Tape and Reel Data, continued
July 1999, Rev. A
TO-92 (FS PKG Code 92, 94, 96)
TO-92 Package Dimensions
January 2000, Rev. B
1:1
Scale 1:1 on letter size paper
Dimensions shown below are in:
inches [millimeters]
Part Weight per unit (gram): 0.1977
©2000 Fairchild Semiconductor International
TRADEMARKS
The following are registered and unregistered trademarks Fairchild Semiconductor owns or is authorized to use and is
not intended to be an exhaustive list of all such trademarks.
LIFE SUPPORT POLICY
FAIRCHILD’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT
DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF F AIRCHILD SEMICONDUCTOR CORPORATION.
As used herein:
1. Life support devices or systems are devices or
systems which, (a) are intended for surgical implant into
the body, or (b) support or sustain life, or (c) whose
failure to perform when properly used in accordance
with instructions for use provided in the labeling, can be
reasonably expected to result in significant injury to the
user.
2. A critical component is any component of a life
support device or system whose failure to perform can
be reasonably expected to cause the failure of the life
support device or system, or to affect its safety or
effectiveness.
PRODUCT ST A TUS DEFINITIONS
Definition of Terms
Datasheet Identification Product Status Definition
Advance Information
Preliminary
No Identification Needed
Obsolete
This datasheet contains the design specifications for
product development. Specifications may change in
any manner without notice.
This datasheet contains preliminary data, and
supplementary data will be published at a later date.
Fairchild Semiconductor reserves the right to make
changes at any time without notice in order to improve
design.
This datasheet contains final specifications. Fairchild
Semiconductor reserves the right to make changes at
any time without notice in order to improve design.
This datasheet contains specifications on a product
that has been discontinued by Fairchild semiconductor.
The datasheet is printed for reference information only.
Formative or
In Design
First Production
Full Production
Not In Production
DISCLAIMER
FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER
NOTICE TO ANY PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION OR DESIGN. FAIRCHILD
DOES NOT ASSUME ANY LIABILITY ARISING OUT OF THE APPLICA TION OR USE OF ANY PRODUCT
OR CIRCUIT DESCRIBED HEREIN; NEITHER DOES IT CONVEY ANY LICENSE UNDER ITS P ATENT
RIGHTS, NOR THE RIGHTS OF OTHERS.
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Contents
General description | Product
status/pricing/packaging | Models
General description
This device is designed for use as general
purpose amplifiers and switches requiring
collector currents of 10 µA to 100 mA.
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Product status/pricing/packaging
Product Product status Pricing* Package type Leads Package marking Packing method
2N4125TF Full Production $0.05 TO-92 3 N/A TAPE REEL
2N4125TA Full Production $0.05 TO-92 3 N/A TAPE REEL
2N4125RA Full Production $0.073 TO-92 3 $Y&3
2N
4125 TAPE REEL
2N4125 Full Production $0.073 TO-92 3 $Y&3
2N
4125 BULK
2N4125BU Full Production $0.05 TO-92 3 N/A BULK
* 1,000 piece Budgetary Pricing
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Models
Package & leads Condition Temperature range Software version Revision date
PSPICE
TO-92-3 Electrical 25°C N/A N/A
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