This product complies with the RoHS Directive (EU 2002/95/EC).
Transistors
2SD1821A
Silicon NPN epitaxial planar type
For high breakdown voltage low-frequency and low-noise
amplification
Package
Code
Features
High collector-emitter voltage (Base open) VCEO
Low noise voltage NV
SMini3-G1
S-Mini type package, allowing downsizing of the equipment and automatic
insertion through the tape packing.
Pin Name
1. Base
2. Emitter
3. Collector
Absolute Maximum Ratings Ta = 25°C
Parameter
Collector-base voltage (Emitter open)
Collector-emitter voltage (Base open)
Emitter-base voltage (Collector open)
Collector current
Symbol
VCBO
VCEO
VEBO
IC
Rating
Unit
V
Marking Symbol: L
185
185
V
5
50
V
mA
mA
mW
°C
Peak collector current
ICP
100
Collector power dissipation
Junction temperature
PC
150
Tj
150
Storage temperature
T
stg
–55 to +150
°C
Electrical Characteristics Ta = 25°C±3°C
Parameter
Symbol
Conditions
Min
185
5
Typ
Max
Unit
V
Collector-emitter voltage (Base open)
Emitter-base voltage (Collector open)
Collector-base cutoff current (Emitter open)
Forward current transfer ratio *
Collector-emitter saturation voltage
Transition frequency
VCEO IC = 100 mA, IB = 0
VEBO IE = 10 mA, IC = 0
V
ICBO
hFE
VCB = 100 V, IE = 0
1
330
1
mA
VCE = 5 V, IC = 10 mA
130
VCE(sat) IC = 30 mA, IB = 3 mA
V
fT
VCB = 10 V, IE = –10 mA, f = 200 MHz
150
2.3
MHz
Collector output capacitance
Cob
VCB = 10 V, IE = 0, f = 1 MHz
pF
(Common base, input open circuited)
VCB = 10 V, IC = 1 mA, GV = 80 dB,
Noise voltage
NV
150
mV
Rg = 100 kΩ, Function = FLAT
Note) 1. Measuring methods are based on JAPANESE INDUSTRIAL STANDARD JIS C 7030 measuring methods for transistors.
2. : Rank classification
*
Rank
R
S
hFE
130 to 220
185 to 330
Publication date : October 2008
SJC00425AED
1
This product complies with the RoHS Directive (EU 2002/95/EC).
2SD1821A
SMini3-G1
Unit: mm
+0.1
−0.0
+0.10
−0.05
0.3
0.15
3
1
2
(0.65)
(0.65)
1.3 ±0.1
2.0 ±0.2
SJC00425AED
3
Request for your special attention and precautions in using the technical information and
semiconductors described in this book
(1) If any of the products or technical information described in this book is to be exported or provided to non-residents, the laws and
regulations of the exporting country, especially, those with regard to security export control, must be observed.
(2) The technical information described in this book is intended only to show the main characteristics and application circuit examples
of the products. No license is granted in and to any intellectual property right or other right owned by Panasonic Corporation or any
other company. Therefore, no responsibility is assumed by our company as to the infringement upon any such right owned by any
other company which may arise as a result of the use of technical information described in this book.
(3) The products described in this book are intended to be used for standard applications or general electronic equipment (such as office
equipment, communications equipment, measuring instruments and household appliances).
Consult our sales staff in advance for information on the following applications:
– Special applications (such as for airplanes, aerospace, automobiles, traffic control equipment, combustion equipment, life support
systems and safety devices) in which exceptional quality and reliability are required, or if the failure or malfunction of the prod-
ucts may directly jeopardize life or harm the human body.
– Any applications other than the standard applications intended.
(4) The products and product specifications described in this book are subject to change without notice for modification and/or im-
provement. At the final stage of your design, purchasing, or use of the products, therefore, ask for the most up-to-date Product
Standards in advance to make sure that the latest specifications satisfy your requirements.
(5) When designing your equipment, comply with the range of absolute maximum rating and the guaranteed operating conditions
(operating power supply voltage and operating environment etc.). Especially, please be careful not to exceed the range of absolute
maximum rating on the transient state, such as power-on, power-off and mode-switching. Otherwise, we will not be liable for any
defect which may arise later in your equipment.
Even when the products are used within the guaranteed values, take into the consideration of incidence of break down and failure
mode, possible to occur to semiconductor products. Measures on the systems such as redundant design, arresting the spread of fire
or preventing glitch are recommended in order to prevent physical injury, fire, social damages, for example, by using the products.
(6) Comply with the instructions for use in order to prevent breakdown and characteristics change due to external factors (ESD, EOS,
thermal stress and mechanical stress) at the time of handling, mounting or at customer's process. When using products for which
damp-proof packing is required, satisfy the conditions, such as shelf life and the elapsed time since first opening the packages.
(7) This book may be not reprinted or reproduced whether wholly or partially, without the prior written permission of our company.
20080805
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