2N5551 MMBT5551
NPN General Purpose Amplifier
This device is designed for general purpose high voltage amplifiers
and gas discharge display drivers.
Absolute Maximum Ratings* T A = 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.
Symbol Parameter Value Units
VCEO Collec tor-Emitter Volt age 160 V
VCBO Collec tor-Base Voltage 180 V
VEBO Emi tter-Bas e Voltage 6.0 V
ICCollect or Current - Cont inuous 600 mA
TJ, Tstg Operating and Storage Junc tion Temperature Range -55 to +150 °C
Thermal Characteristics T A = 25°C unless otherwise noted
Symbol Characteristic Max Units
2N5551 *MMBT5551
PDTotal De vice Dissipa tion
Derate above 25°C625
5.0 350
2.8 mW
mW/°C
RθJC Thermal Resistance, Junction to Case 83.3 °C/W
RθJ
A
The rmal Resistance, Junction to Ambient 200 357 °C/W
CBETO-92
C
B
E
SOT-23
Mark: 3S
*Device mounted on FR-4 PCB 1.6" X 1.6" X 0.06."
2001 Fairchild Semiconductor International
2N5551 / MMBT5551
2N5551/MMBT5551, Rev A
3
2N5551 / MMBT5551
Electrical Characteristics T A = 25°C unless otherwise noted
OFF CHARACTERISTICS
ON CHARACTERISTICS
Symbol Parameter Test Conditions Min Max Units
SMALL SIGNAL CHARACTERISTICS
V
(
BR
)
CEO Collector-Emitter Sustaining Voltage* IC = 1.0 mA, IB = 0 160 V
V
(
BR
)
CBO Collector-Base Breakdown Voltage IC = 100 µA, IE = 0 180 V
V
(
BR
)
EBO Emitter-Base Breakdown Voltage IE = 10 µA, IC = 0 6.0 V
ICBO Collector Cutoff Current VCB = 120 V, IE = 0,
VCB = 120 V, IE = 0, T
A
= 100°C50
50 nA
µA
IEBO Emitter Cutoff Current VEB = 4.0 V, IC = 0 50 nA
hFE DC Cur r ent Gain IC = 1.0 mA, VCE = 5.0 V
IC = 10 mA, VCE = 5.0 V
IC = 50 mA, VCE = 5.0 V
80
80
30 250
VCE(sat)Collector-Emitter Satura tion Vo ltage IC = 10 mA, IB = 1.0 mA
IC = 50 mA, IB = 5.0 mA 0.15
0.20 V
V
VBE(sat)Base-Emitter Saturation Voltage IC = 10 mA, IB = 1.0 mA
IC = 50 mA, IB = 5.0 mA 1.0
1.0 V
V
fTCurrent Ga in - Bandwidth Product IC = 10 mA, VCE = 10 V,
f = 100 MHz 100 300 MHz
Cobo Output Capacitance VCB = 10 V, IE = 0,
f = 1.0 MHz 6.0 pF
Cibo Input Capacitance VBE = 0.5 V, IC = 0,
f = 1.0 MHz 20 pF
hfe Small-Signal Current Gain IC = 1.0 mA, VCE = 10 V,
f = 1.0 kHz 50 250
NF Noise Figure IC = 250 µA, VCE = 5.0 V,
RS=1.0 k, f=10 Hz to 15.7 kHz 8.0 dB
*Pulse T est: Pulse Width 300 µs, Duty Cycle 2.0%
Spice Model
NPN (Is=2.51 1f Xti=3 Eg=1.11 V af=100 Bf=242.6 Ne=1.249 Ise=2.51 1f Ikf=.3458 Xtb=1.5 Br=3.197 Nc=2 Isc=0
Ikr=0 Rc=1 Cjc=4.883p Mjc=.3047 Vjc=.75 Fc=.5 Cje=18.79p Mje=.3416 Vje=.75 Tr=1.202n Tf=560p Itf=50m
Vtf=5 Xtf=8 Rb=10)
NPN General Purpose Amplifier
(continued)
Typical Characteristics
C o l l ecto r- E mitte r B r ea k down
Voltage with Resistance
Between E mitter-Base
0.1 1 10 100 1000
160
180
200
220
240
260
RESISTANC E (k )
BV - BREAKDOWN VOLTAGE (V)
CER
I = 1.0 m A
C
Collector-Cutoff Cur rent
vs. A mb ient Temp er atu re
25 50 75 100 125
1
10
50
T - AMBIENT TEMPERATUR E ( C)
I - C OLLECTOR CURR ENT (nA)
A
CBO
°
V = 100V
CB
Typic a l P uls ed Curre nt G ain
vs Collector Cu rrent
0.1 0.2 0.5 1 2 5 10 20 50 100
0
50
100
150
200
250
I - COLLECTOR CURRENT (mA)
h - TYPI CAL PU LSED CU R RENT GAIN
C
FE
125 °C
25 °C
- 40 °C
V = 5 V
CE
C o ll ecto r -Emitter Satur ati o n
Vo ltag e vs C o llector Cu r rent
110100200
0
0.1
0.2
0.3
0.4
0.5
I - C OLLEC TOR CUR RENT (mA)
V - COLLECTOR EM ITTE R VOLTAGE (V)
C
CESAT
25 °C
- 40 °C
125 °C
β= 10
B ase-Emitter Saturati o n
Vo ltage vs C o llector Cu rrent
110100200
0
0.2
0.4
0.6
0.8
1
I - COLLECTOR CURRENT (mA)
V - BASE EMITTER VOLTA GE (V)
C
BESAT
β= 10
25 °C
- 40 °C
125 °C
Base Emitter ON Vol tage vs
Collector Curre nt
0.1 1 10 100 200
0
0.2
0.4
0.6
0.8
1
I - COLLECTOR CURRE NT (mA)
V - BASE EMITTER ON VOLTAGE (V)
C
BEON
V = 5V
CE
25 °C
- 40 °C
125 °C
2N5551 / MMBT5551
NPN General Purpose Amplifier
(continued)
3
2N5551 / MMBT5551
NPN General Purpose Amplifier
(continued)
Typical Characteristics (continued)
Power Dissipation vs
Ambient Temperature
0 25 50 75 100 125 150
0
100
200
300
400
500
600
700
TEMPERATURE ( C)
P - POWER DISSIPATION (mW)
D
o
TO-92
SOT-23
Input and Output Capacitance
vs Reverse Voltage
0.1 1 10 100
0
5
10
15
20
25
30
V - COLLECTOR VOLTAGE (V)
CAPA CI TANCE (pF)
C
f = 1.0 M H z
CE
C
cb
ib
Smal l Signa l C ur r e nt Ga in
vs Co llect or Current
11050
0
4
8
12
16
I - COLLECTOR CURRENT (mA)
h - SMALL SIGN AL CU RRENT GAIN
C
FE
FR EG = 20 M Hz
V = 10V
CE
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 Qu antity EOL c o d e
Reel A 2,000 D26Z
E2,000 D27Z
Ammo M 2,000 D74Z
P2,000 D75Z
U nit weight = 0.22 gm
Reel weig ht w ith compo nents = 1 .04 kg
Ammo w e igh t with compo n ents = 1.02 kg
Max q uantity per intermediate box = 1 0,000 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 REV:
B2
SPEC:
QTY:
10000
QA REV:
FAIRCHILD SEMICONDUCTOR CORPORATION
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 EMITTE R
ADHESIVE TAPE IS ON THE TOP SIDE
FLAT OF TRANSISTOR IS ON BOTTOM
ORDER STYLE
D75Z (P)
FIRST WIRE OFF IS COLLECTOR
ADHESIVE TAPE IS ON THE TOP SIDE
FLAT OF TRANSISTOR 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 Cl inch 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/b ac k )
Com p on en t Pitc h
Feed Hole Pitch
Hole Center to First Lead
Hole Center to Component Center
Lead Spread
Lead Thic kness
Cut Lead Length
Taped Lead Length
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 (+ /- 0.02 5)
0. 63 0 (+ /- 0.02 0)
0. 74 8 (+ /- 0.02 0)
0. 04 0 (m ax )
0. 03 1 (m ax )
0. 50 0 (+ /- 0.02 0)
0. 50 0 (+ /- 0.00 8)
0. 15 0 (+ 0 .00 9, -0.0 10 )
0. 24 7 (+ /- 0.00 7)
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 (+ /- 0.00 6)
0. 02 1 (+ /- 0.00 6)
0. 70 8 (+ 0 .02 0, -0.0 19 )
0. 23 6 (+ /- 0.01 2)
0. 03 5 (m ax )
0. 36 0 (+ /- 0.02 5)
0. 15 7 (+ 0 .00 8, -0.0 07 )
0. 00 4 (m ax )
Note : All dimensions 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 Widt h W2 1.630 1.690
Hub to Hub Center W idth W3 2.090
Note: All dimensions are inches
TO-92 Tape and Reel Taping
Dimension Configuratio n: 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
SENSITIVE DEVICE S
ELECTROSTATIC
D1
D3
Cust omized Label
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
SOT-23 Packag in g
Configurat ion: Figure 1.0
Components Leader Tape
500mm minimum or
125 emp ty pocket s
Tr ailer Tape
300mm minimum or
75 empty pockets
SOT-23 Tape Leader and Trailer
Configuration: Figure 2.0
Cover Tape
Carrier Tape
Note/Comments
Packaging Option
SOT-23 Packaging Information
Standard
(no flow code) D87Z
Packaging type
Reel Si ze
TNR
7" Dia
TNR
13"
Qty per Reel/Tube/Bag 3,000 10,000
Bo x Dimen si on (mm ) 187x107x183 343x343x64
Max qt y per B o x 24,000 30,000
Weight per unit (gm) 0.0082 0.0082
Weight per Reel (kg) 0.1175 0.4006
Human readable
Label
Human Readable Label
Human Readable Label sample
343mm x 342mm x 64mm
Intermediate box for L87Z Option
187mm x 107mm x 183mm
Intermediate Box for Standard Option
SOT-23 Unit Orientation
3P 3P 3P 3P
Human Readable
Label
Customized Label
Embossed
Carrier Tape
Antistatic Cover Tape
Packaging Description:
SOT-23
made from a dissipative (carbon filled) polycarbonate
resin. The cover tape is a multilayer film (Heat Activated
Adhesive in nature) primaril y composed of polyester film ,
adhesive layer, sealant, and anti-static sprayed agent.
These reeled parts in standard option are shipped with
3,000 uni t s per 7" or 177cm diameter reel. The reels are
dark blue in color and is made of polystyrene plastic (anti-
static coated). Other option comes in 10,000 units per 13"
or 330cm diameter reel. Thi s and some other opti ons are
described in the Packaging Information table.
These full reel s are individually labeled and placed insi de
a standard intermediate made of recyclable corrugated
brown paper wi th a Fai rchil d l ogo pri nti ng. One pizza box
contains eight reels maximum. And these intermediate
boxes are placed inside a labeled shipping box which
comes i n different sizes depending on the number of parts
shipped.
parts are shipped in tape. The carrier tape is
SOT-23 Tape and Reel Data
September 1999, Rev . C
©2000 Fairchild Semiconductor International
Dimensions are in millimeter
Pkg type
A0 B0 W D0 D1 E1 E2 F P1 P0 K0 T Wc Tc
SOT-23
(8mm)
3.15
+/-0.10 2.77
+/-0.10 8.0
+/-0.3 1.55
+/-0.05 1.125
+/-0.125 1.75
+/-0.10 6.25
min 3.50
+/-0.05 4.0
+/-0.1 4.0
+/-0.1 1.30
+/-0.10 0.228
+/-0.013 5.2
+/-0.3 0.06
+/-0.02
Dimensions are in inches and millimeters
Tape Size Reel
Option Dim A Dim B Dim C Dim D Dim N Dim W1 Dim W2 Dim W3 (LSL-USL)
8mm 7" Dia 7.00
177.8 0.059
1.5 512 +0.020/-0.008
13 +0.5/-0.2 0.795
20.2 2.165
55 0.331 +0.059/-0.000
8.4 +1.5/0 0.567
14.4 0.311 – 0.429
7.9 – 10.9
8m m 13" Dia 13.00
330 0.059
1.5 512 +0.020/-0.008
13 +0.5/-0.2 0.795
20.2 4.00
100 0.331 +0.059/-0.000
8.4 +1.5/0 0.567
14.4 0.311 – 0.429
7.9 – 10.9
See detail AA
Dim A
max
13" Diameter Option
7" Diameter Option
Dim A
Max
See detail AA
W3
W2 max Measured at Hub
W1 Measured at Hub
Dim N
Dim D
min
Dim C
B Min
DETAIL AA
Notes: A0, B0, and K0 dimensions are determined with respect to the EIA/Jedec RS-481
rotational and lateral movement requirements (see sketches A, B, and C).
20 deg maximum component rotation
0.5mm
maximum
0.5mm
maximum
Sketch C (Top View)
Component lateral movement
Typical
component
cavity
center line
20 deg maximum
Typical
component
center line
B0
A0
Sketch B (Top View)
Component Rotation
Sketch A (Si de or Front Sectional Vi ew)
Component Rotation
User Direction of Feed
SOT-23 Embossed Carrier Tape
Configuration: Figure 3.0
SOT-23 Reel Configuration: Figure 4.0
P1 A0
D1
FW
E1
E2
Tc
Wc
K0
T
B0
D0P0 P2
SOT-23 Tape and Reel Data, continued
September 1999, Rev . C
SOT-23 (FS PKG Code 49)
SOT-23 Package Dimensions
September 1998, Rev . A1
1:1
Scale 1:1 on letter size paper
Dimensions shown below are in:
inches [millimeters]
Par t Weight per unit (gram): 0.0082
©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 FAIRCHILD 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 PA TENT
RIGHTS, NOR THE RIGHTS OF OTHERS.
PowerTrench
QFET™
QS™
QT Optoelectronics™
Quiet Series™
SILENT SWITCHER
SMART ST ART™
SuperSOT™-3
SuperSOT™-6
SuperSOT™-8
FASTr™
GlobalOptoisolator™
GTO™
HiSeC™
ISOPLANAR™
MICROWIRE™
OPTOLOGIC™
OPTOPLANAR™
PACMAN™
POP™
Rev . G
ACEx™
Bottomless™
CoolFET™
CROSSVOLT
DOME™
E2CMOSTM
EnSignaTM
FACT™
F ACT Quiet Series™
FAST
SyncFET™
TinyLogic™
UHC™
VCX™
Product Folder - Fairchild P/N 2N5551 - NPN General Purpose Amplifier
Fairchild Semiconductor
space
space
SEARCH | Parametric | Cross Reference
space
Product Folders and
Datasheets
Application
notes
space
space
space
find products
Home >> Find products >>
space
space
space
space
Products groups
space
Analog and Mixed
Signal
Discrete
Interface
Logic
Microcontrollers
Non-Volatile
Memory
Optoelectronics
Markets and
applications
New products
Product selection and
parametric search
Cross-reference
search
technical information
buy products
technical support
my Fairchild
company
2N5551
NPN General Purpose Amplifier Related Links
Request samples
Dotted line
How to order products
Dotted line
Product Change Notices
(PCNs)
Dotted line
Support
Dotted line
Distributor and field sales
representatives
Dotted line
Quality and reliability
Dotted line
Design tools
Contents
General description | Product
status/pricing/packaging | Models
General description
This device is designed for general purpose
high voltage amplifiers and gas discharge
display drivers.
back to top
space
Datasheet
Download this
datasheet
PDF
e-mail this datasheet
[E-
mail]
This pagePrint version
Product status/pricing/packaging
Product Product status Pricing* Package type Leads Package marking Packing method
2N5551CTA Full Production $0.053 TO-92 3 N/A TAPE REEL
2N5551BU Full Production $0.053 TO-92 3 N/A BULK
2N5551YCHBU Full Production $0.053 TO-92 3 N/A BULK
2N5551YIUBU Full Production $0.053 TO-92 3 N/A BULK
2N5551YTA Full Production $0.053 TO-92 3 N/A TAPE REEL
2N5551TA Full Production $0.053 TO-92 3 N/A TAPE REEL
2N5551CBU Full Production $0.053 TO-92 3 N/A BULK
2N5551IUTA Full Production $0.053 TO-92 3 N/A TAPE REEL
2N5551 Full Production $0.085 TO-92 3 $Y&3
2N
5551 BULK
2N5551CYTA Full Production $0.053 TO-92 3 N/A TAPE REEL
2N5551YBU Full Production $0.053 TO-92 3 N/A BULK
2N5551TF Full Production $0.053 TO-92 3 N/A TAPE REEL
2N5551YIUTA Full Production $0.053 TO-92 3 N/A TAPE REEL
* 1,000 piece Budgetary Pricing
back to top
file:///H|/imaging/BITTING/cpl/20020725_1/07252002_10/FAIR/07252002/2N5551.html (1 of 2) [Jul/26/2002 11:13:44 AM]
GO
Product Folder - Fairchild P/N 2N5551 - NPN General Purpose Amplifier
Models
Package & leads Condition Temperature range Software version Revision date
PSPICE
TO-92-3 Electrical 25°C N/A N/A
back to top
space
space
Home | Find products | Technical information | Buy products |
Support | Company | Contact us | Site index | Privacy policy
© Copyright 2002 Fairchild Semiconductor
space
space
file:///H|/imaging/BITTING/cpl/20020725_1/07252002_10/FAIR/07252002/2N5551.html (2 of 2) [Jul/26/2002 11:13:44 AM]