ONSEMI BCW30LT1

BCW30LT1
General Purpose
Transistors
PNP Silicon
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COLLECTOR
3
MAXIMUM RATINGS
Rating
Symbol
Value
Unit
Collector-Emitter Voltage
VCEO
–32
Vdc
Collector-Base Voltage
VCBO
–32
Vdc
Emitter-Base Voltage
VEBO
–5.0
Vdc
IC
–100
mAdc
Symbol
Value
Unit
Collector Current — Continuous
1
BASE
2
EMITTER
THERMAL CHARACTERISTICS
Characteristic
Total Device Dissipation
FR-5 Board(1)
TA = 25°C
Derate above 25°C
Thermal Resistance,
Junction to Ambient
Total Device Dissipation
Alumina Substrate,(2) TA = 25°C
Derate above 25°C
Thermal Resistance,
Junction to Ambient
Junction and Storage Temperature
PD
3
mW
225
1
1.8
mW/°C
RθJA
556
°C/W
PD
300
mW
2.4
mW/°C
RθJA
417
°C/W
TJ, Tstg
–55 to
+150
°C
0.062 in.
0.024 in. 99.5% alumina.
2
SOT–23 (TO–236AB)
CASE 318
STYLE 6
DEVICE MARKING
C2x
(1) FR– 5 = 1.0
0.75
(2) Alumina = 0.4
0.3
x = Monthly Date Code
ORDERING INFORMATION
Device
BCW30LT1
 Semiconductor Components Industries, LLC, 1999
November, 1999 – Rev. 0
1
Package
Shipping
SOT–23
3000 Units/Rail
Publication Order Number:
BCW30LT1/D
BCW30LT1
ELECTRICAL CHARACTERISTICS (TA = 25°C unless otherwise noted)
Symbol
Min
Max
Unit
Collector–Emitter Breakdown Voltage
(IC = –2.0 mAdc, IE = 0)
V(BR)CEO
–32
—
Vdc
Collector–Emitter Breakdown Voltage
(IC = –100 µAdc, VEB = 0)
V(BR)CES
–32
—
Vdc
Collector–Base Breakdown Voltage
(IC = –10 µAdc, IC = 0)
V(BR)CBO
–32
—
Vdc
Emitter–Base Breakdown Voltage
(IE = –10 µAdc, IC = 0)
V(BR)EBO
–5.0
—
Vdc
—
—
–100
–10
nAdc
µAdc
215
500
—
—
–0.3
–0.6
–0.75
—
7.0
—
10
Characteristic
OFF CHARACTERISTICS
Collector Cutoff Current
(VCB = –32 Vdc, IE = 0)
(VCB = –32 Vdc, IE = 0, TA = 100°C)
ICBO
ON CHARACTERISTICS
DC Current Gain
(IC = –2.0 mAdc, VCE = –5.0 Vdc)
hFE
Collector–Emitter Saturation Voltage
(IC = –10 mAdc, IB = –0.5 mAdc)
VCE(sat)
Base–Emitter On Voltage
(IC = –2.0 mAdc, VCE = –5.0 Vdc)
VBE(on)
Vdc
Vdc
SMALL–SIGNAL CHARACTERISTICS
Output Capacitance
(IE = 0, VCB = –10 Vdc, f = 1.0 MHz)
Cobo
Noise Figure
(IC = –0.2 mAdc, VCE = –5.0 Vdc, RS = 2.0 kΩ, f = 1.0 kHz, BW = 200 Hz)
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2
pF
NF
dB
BCW30LT1
TYPICAL NOISE CHARACTERISTICS
(VCE = – 5.0 Vdc, TA = 25°C)
10
7.0
IC = 10 µA
5.0
In, NOISE CURRENT (pA)
en, NOISE VOLTAGE (nV)
1.0
7.0
5.0
BANDWIDTH = 1.0 Hz
RS ≈ 0
30 µA
3.0
100 µA
300 µA
1.0 mA
2.0
BANDWIDTH = 1.0 Hz
RS ≈ ∞
IC = 1.0 mA
3.0
2.0
300 µA
1.0
0.7
0.5
100 µA
30 µA
0.3
0.2
1.0
10 µA
0.1
10
20
50
100 200
500 1.0 k
f, FREQUENCY (Hz)
2.0 k
5.0 k
10
10 k
20
50
Figure 1. Noise Voltage
100 200
500 1.0 k 2.0 k
f, FREQUENCY (Hz)
5.0 k
10 k
Figure 2. Noise Current
NOISE FIGURE CONTOURS
1.0 M
500 k
BANDWIDTH = 1.0 Hz
RS , SOURCE RESISTANCE (OHMS)
RS , SOURCE RESISTANCE (OHMS)
(VCE = – 5.0 Vdc, TA = 25°C)
200 k
100 k
50 k
20 k
10 k
0.5 dB
5.0 k
1.0 dB
2.0 k
1.0 k
500
2.0 dB
3.0 dB
200
100
20
30
50 70 100
200 300
IC, COLLECTOR CURRENT (µA)
BANDWIDTH = 1.0 Hz
200 k
100 k
50 k
20 k
10 k
0.5 dB
5.0 k
1.0 dB
2.0 k
1.0 k
500
2.0 dB
3.0 dB
200
100
5.0 dB
10
1.0 M
500 k
500 700 1.0 k
5.0 dB
10
RS , SOURCE RESISTANCE (OHMS)
Figure 3. Narrow Band, 100 Hz
1.0 M
500 k
20
30
50 70 100
200 300
IC, COLLECTOR CURRENT (µA)
500 700 1.0 k
Figure 4. Narrow Band, 1.0 kHz
10 Hz to 15.7 kHz
200 k
100 k
50 k
ƪ
Noise Figure is Defined as:
20 k
10 k
NF
0.5 dB
1.0 dB
2.0 dB
3.0 dB
5.0 dB
200
100
10
20
30
50 70 100
200 300
en2
ƫ
) 4KTRS ) In 2RS2 1ń2
4KTRS
en = Noise Voltage of the Transistor referred to the input. (Figure 3)
In = Noise Current of the Transistor referred to the input. (Figure 4)
K = Boltzman’s Constant (1.38 x 10–23 j/°K)
T = Temperature of the Source Resistance (°K)
RS = Source Resistance (Ohms)
5.0 k
2.0 k
1.0 k
500
+ 20 log10
500 700 1.0 k
IC, COLLECTOR CURRENT (µA)
Figure 5. Wideband
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BCW30LT1
TYPICAL STATIC CHARACTERISTICS
h FE, DC CURRENT GAIN
500
TJ = 125°C
25°C
300
– 55°C
200
180
BCW29LT1
VCE = 1.0 V
VCE = 10 V
160
140
0.003 0.005
0.01
0.02 0.03
0.05 0.07 0.1
0.2 0.3 0.5 0.7 1.0
2.0
IC, COLLECTOR CURRENT (mA)
3.0
5.0 7.0
10
20
30
50 70 100
100
1.0
TA = 25°C
BCW29LT1
IC, COLLECTOR CURRENT (mA)
VCE , COLLECTOR–EMITTER VOLTAGE (VOLTS)
Figure 6. DC Current Gain
0.8
IC = 1.0 mA
0.6
10 mA
50 mA
100 mA
0.4
0.2
0
0.002 0.005 0.01 0.02 0.05 0.1 0.2 0.5 1.0 2.0
IB, BASE CURRENT (mA)
TA = 25°C
PULSE WIDTH = 300 µs
80 DUTY CYCLE ≤ 2.0%
200 µA
60
150 µA
40
100 µA
50 µA
20
0
20
5.0
10
15
20
25
30
35
VCE, COLLECTOR–EMITTER VOLTAGE (VOLTS)
θV, TEMPERATURE COEFFICIENTS (mV/°C)
1.2
V, VOLTAGE (VOLTS)
40
Figure 8. Collector Characteristics
TJ = 25°C
1.0
0.8
VBE(sat) @ IC/IB = 10
0.6
VBE(on) @ VCE = 1.0 V
0.4
0.2
VCE(sat) @ IC/IB = 10
0
0.5 1.0
2.0
5.0
10
20
IC, COLLECTOR CURRENT (mA)
250 µA
0
5.0 10
1.4
0.2
350 µA
300 µA
Figure 7. Collector Saturation Region
0.1
IB = 400 µA
50
1.6
*APPLIES for IC/IB ≤ hFE/2
0.8
*qVC for VCE(sat)
0
– 55°C to 25°C
0.8
25°C to 125°C
1.6
2.4
0.1
100
25°C to 125°C
Figure 9. “On” Voltages
qVB for VBE
0.2
– 55°C to 25°C
1.0 2.0
5.0
10 20
0.5
IC, COLLECTOR CURRENT (mA)
Figure 10. Temperature Coefficients
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50
100
BCW30LT1
TYPICAL DYNAMIC CHARACTERISTICS
500
300
200
200
100
70
50
30
tr
20
10
7.0
5.0
1.0
100
70
50
tf
30
td @ VBE(off) = 0.5 V
20
2.0
3.0
50 70
20 30
5.0 7.0 10
IC, COLLECTOR CURRENT (mA)
10
–1.0
100
– 2.0 – 3.0 – 5.0 – 7.0 –10
– 20 – 30
IC, COLLECTOR CURRENT (mA)
– 50 – 70 –100
Figure 12. Turn–Off Time
500
10
TJ = 25°C
TJ = 25°C
7.0
VCE = 20 V
300
Cib
C, CAPACITANCE (pF)
f T, CURRENT–GAIN — BANDWIDTH PRODUCT (MHz)
Figure 11. Turn–On Time
5.0 V
200
100
5.0
3.0
2.0
Cob
70
50
0.5 0.7 1.0
2.0
3.0
5.0 7.0
10
20
30
1.0
0.05
50
0.1
0.2
0.5
1.0
2.0
5.0
IC, COLLECTOR CURRENT (mA)
VR, REVERSE VOLTAGE (VOLTS)
Figure 13. Current–Gain — Bandwidth Product
Figure 14. Capacitance
hfe ≈ 300
@ IC = –1.0 mA
7.0
5.0
VCE = –10 Vdc
f = 1.0 kHz
TA = 25°C
3.0
2.0
1.0
0.7
0.5
0.3
hoe, OUTPUT ADMITTANCE (m mhos)
10
0.2
0.1
10
20
50
200
20
hie , INPUT IMPEDANCE (k Ω )
VCC = – 3.0 V
IC/IB = 10
IB1 = IB2
TJ = 25°C
ts
300
t, TIME (ns)
t, TIME (ns)
1000
700
500
VCC = 3.0 V
IC/IB = 10
TJ = 25°C
100
70
50
VCE = 10 Vdc
f = 1.0 kHz
TA = 25°C
30
20
hfe ≈ 300
@ IC = 1.0 mA
10
7.0
5.0
3.0
0.2
0.5
20
1.0 2.0
5.0
10
IC, COLLECTOR CURRENT (mA)
50
2.0
0.1
100
Figure 15. Input Impedance
0.2
0.5
20
1.0 2.0
5.0
10
IC, COLLECTOR CURRENT (mA)
Figure 16. Output Admittance
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5
50
100
r(t) TRANSIENT THERMAL RESISTANCE (NORMALIZED)
BCW30LT1
1.0
0.7
0.5
D = 0.5
0.3
0.2
0.2
0.1
0.1
0.07
0.05
FIGURE 19
0.05
P(pk)
0.02
0.03
0.02
t1
0.01
0.01
0.01 0.02
SINGLE PULSE
0.05
0.1
0.2
0.5
1.0
t2
2.0
5.0
10
20
50
t, TIME (ms)
100 200
DUTY CYCLE, D = t1/t2
D CURVES APPLY FOR POWER
PULSE TRAIN SHOWN
READ TIME AT t1 (SEE AN–569)
ZθJA(t) = r(t) • RθJA
TJ(pk) – TA = P(pk) ZθJA(t)
500 1.0 k 2.0 k
5.0 k 10 k 20 k
50 k 100 k
Figure 17. Thermal Response
104
DESIGN NOTE: USE OF THERMAL RESPONSE DATA
IC, COLLECTOR CURRENT (nA)
VCC = 30 V
A train of periodical power pulses can be represented by the model
as shown in Figure 19. Using the model and the device thermal
response the normalized effective transient thermal resistance of
Figure 17 was calculated for various duty cycles.
To find ZθJA(t), multiply the value obtained from Figure 17 by the
steady state value RθJA.
103
ICEO
102
101
ICBO
AND
ICEX @ VBE(off) = 3.0 V
100
Example:
The BCW29LT1 is dissipating 2.0 watts peak under the following
conditions:
t1 = 1.0 ms, t2 = 5.0 ms (D = 0.2)
Using Figure 17 at a pulse width of 1.0 ms and D = 0.2, the reading of
r(t) is 0.22.
10–1
10–2
–4
0
–2
0
0
The peak rise in junction temperature is therefore
∆T = r(t) x P(pk) x RθJA = 0.22 x 2.0 x 200 = 88°C.
+ 20 + 40 + 60 + 80 + 100 + 120 + 140 + 160
TJ, JUNCTION TEMPERATURE (°C)
For more information, see AN–569.
Figure 18. Typical Collector Leakage Current
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BCW30LT1
INFORMATION FOR USING THE SOT–23 SURFACE MOUNT PACKAGE
MINIMUM RECOMMENDED FOOTPRINT FOR SURFACE MOUNTED APPLICATIONS
Surface mount board layout is a critical portion of the
total design. The footprint for the semiconductor packages
must be the correct size to insure proper solder connection
interface between the board and the package. With the
correct pad geometry, the packages will self align when
subjected to a solder reflow process.
0.037
0.95
0.037
0.95
0.079
2.0
0.035
0.9
0.031
0.8
inches
mm
SOT–23
SOT–23 POWER DISSIPATION
SOLDERING PRECAUTIONS
The power dissipation of the SOT–23 is a function of the
pad size. This can vary from the minimum pad size for
soldering to a pad size given for maximum power dissipation.
Power dissipation for a surface mount device is determined
by TJ(max), the maximum rated junction temperature of the
die, RθJA, the thermal resistance from the device junction to
ambient, and the operating temperature, TA. Using the values
provided on the data sheet for the SOT–23 package, PD can
be calculated as follows:
PD =
The melting temperature of solder is higher than the
rated temperature of the device. When the entire device is
heated to a high temperature, failure to complete soldering
within a short time could result in device failure. Therefore,
the following items should always be observed in order to
minimize the thermal stress to which the devices are
subjected.
• Always preheat the device.
• The delta temperature between the preheat and
soldering should be 100°C or less.*
• When preheating and soldering, the temperature of the
leads and the case must not exceed the maximum
temperature ratings as shown on the data sheet. When
using infrared heating with the reflow soldering
method, the difference shall be a maximum of 10°C.
• The soldering temperature and time shall not exceed
260°C for more than 10 seconds.
• When shifting from preheating to soldering, the
maximum temperature gradient shall be 5°C or less.
• After soldering has been completed, the device should
be allowed to cool naturally for at least three minutes.
Gradual cooling should be used as the use of forced
cooling will increase the temperature gradient and
result in latent failure due to mechanical stress.
• Mechanical stress or shock should not be applied
during cooling.
TJ(max) – TA
RθJA
The values for the equation are found in the maximum
ratings table on the data sheet. Substituting these values
into the equation for an ambient temperature TA of 25°C,
one can calculate the power dissipation of the device which
in this case is 225 milliwatts.
PD =
150°C – 25°C
556°C/W
= 225 milliwatts
The 556°C/W for the SOT–23 package assumes the use of
the recommended footprint on a glass epoxy printed circuit
board to achieve a power dissipation of 225 milliwatts.
There are other alternatives to achieving higher power
dissipation from the SOT–23 package. Another alternative
would be to use a ceramic substrate or an aluminum core
board such as Thermal Clad. Using a board material such
as Thermal Clad, an aluminum core board, the power
dissipation can be doubled using the same footprint.
* Soldering a device without preheating can cause
excessive thermal shock and stress which can result in
damage to the device.
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BCW30LT1
PACKAGE DIMENSIONS
SOT–23 (TO–236AB)
CASE 318–08
ISSUE AF
NOTES:
1. DIMENSIONING AND TOLERANCING PER ANSI
Y14.5M, 1982.
2. CONTROLLING DIMENSION: INCH.
3. MAXIMUM LEAD THICKNESS INCLUDES LEAD
FINISH THICKNESS. MINIMUM LEAD THICKNESS
IS THE MINIMUM THICKNESS OF BASE
MATERIAL.
A
L
3
B S
1
V
DIM
A
B
C
D
G
H
J
K
L
S
V
2
G
C
D
H
J
K
INCHES
MIN
MAX
0.1102 0.1197
0.0472 0.0551
0.0350 0.0440
0.0150 0.0200
0.0701 0.0807
0.0005 0.0040
0.0034 0.0070
0.0140 0.0285
0.0350 0.0401
0.0830 0.1039
0.0177 0.0236
MILLIMETERS
MIN
MAX
2.80
3.04
1.20
1.40
0.89
1.11
0.37
0.50
1.78
2.04
0.013
0.100
0.085
0.177
0.35
0.69
0.89
1.02
2.10
2.64
0.45
0.60
STYLE 6:
PIN 1. BASE
2. EMITTER
3. COLLECTOR
Thermal Clad is a trademark of the Bergquist Company
ON Semiconductor and
are trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC reserves the right to make changes
without further notice to any products herein. SCILLC makes no warranty, representation or guarantee regarding the suitability of its products for any particular
purpose, nor does SCILLC assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability,
including without limitation special, consequential or incidental damages. “Typical” parameters which may be provided in SCILLC data sheets and/or
specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including “Typicals” must be
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alleges that SCILLC was negligent regarding the design or manufacture of the part. SCILLC is an Equal Opportunity/Affirmative Action Employer.
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BCW30LT1/D