DATASHEET

EL6203
®
Data Sheet
August 8, 2007
Laser Driver Oscillator
Features
The EL6203 is a push-pull oscillator used to reduce laser
noise. It uses the standard interface to existing ROM
controllers. The frequency and amplitude are each set with a
separate resistor connected to ground. The tiny package
and harmonic reduction allow the part to be placed close to a
laser with low RF emissions. An auto turn-off feature allows
it to easily be used on combo CD-RW plus DVD-ROM
pick-ups.
• Low power dissipation
One external resistor sets the oscillator frequency. Another
external resistor sets the oscillator amplitude. If the APC
current is reduced such that the average laser voltage drops
to less than 1.1V, the output and oscillator are disabled,
reducing power consumption to a minimum.
The current drawn by the oscillator consists of a small bias
current, plus the peak output amplitude in the positive cycle.
In the negative cycle, the oscillator subtracts peak output
amplitude from the laser APC current.
This part is pin-compatible to the EL6201. It is superior to the
EL6201 in several ways: It has up to 100mA output
capability, it is more power-efficient, it has less harmonic
content, and it has an auto shut-off feature activated at 1.1V.
The part is available in the space-saving 5 Ld SOT-23
package. It is specified for operation from 0°C to +70°C.
Pinout
EL6203
(5 LD SOT-23)
TOP VIEW
1 VDD
RFREQ 5
2 GND
3 IOUT
RAMP 4
FN7218.3
• User-selectable frequency from 60MHz to 600MHz
controlled with a single resistor
• User-specified amplitude from 10mAP-P to 100mAP-P
controlled with a single resistor
• Auto turn-off threshold
• Soft edges for reduced EMI
• Small 5 Ld SOT-23 package
• Pb-free available (RoHS compliant)
Applications
• DVD players
• DVD-ROM drives
• CD-RW drives
• MO drives
• General purpose laser noise reduction
Ordering Information
PART
NUMBER
PART
MARKING
PACKAGE
PKG.
DWG. #
EL6203CW
Z
5 Ld SOT-23
MDP0038
EL6203CW-T13*
Z
5 Ld SOT-23
MDP0038
EL6203CW-T7*
Z
5 Ld SOT-23
MDP0038
EL6203CW-T7A*
Z
5 Ld SOT-23
MDP0038
EL6203CWZ
(Note)
BMAA
5 Ld SOT-23
(Pb-free)
MDP0038
EL6203CWZ-T7*
(Note)
BMAA
5 Ld SOT-23
(Pb-free)
MDP0038
EL6203CWZ-T7A* BMAA
(Note)
5 Ld SOT-23
(Pb-free)
MDP0038
*Please refer to TB347 for details on reel specifications.
NOTE: These Intersil Pb-free plastic packaged products employ
special Pb-free material sets; molding compounds/die attach
materials and 100% matte tin plate PLUS ANNEAL - e3 termination
finish, which is RoHS compliant and compatible with both SnPb and
Pb-free soldering operations. Intersil Pb-free products are MSL
classified at Pb-free peak reflow temperatures that meet or exceed
the Pb-free requirements of IPC/JEDEC J STD-020.
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774 | Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright Intersil Americas Inc. 2003-2004, 2007. All Rights Reserved Elantec is a registered trademark of Elantec Semiconductor, Inc.
All other trademarks mentioned are the property of their respective owners.
EL6203
Absolute Maximum Ratings (TA = +25°C)
Thermal Information
Applied Voltages
VDD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.5V to +6.0V
IOUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.5V to +6.0V
RFREQ, RAMP . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.5V to +6.0V
Operating Ambient Temperature Range . . . . . . . . . . . 0°C to +70°C
Maximum Junction Temperature . . . . . . . . . . . . . . . . . . . . . . +150°C
Storage Temperature Range . . . . . . . . . . . . . . . . . .-65°C to +150°C
Output Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100mAP-P
Power Dissipation (max) . . . . . . . . . . . . . . . . . . . . . . . . See Curves
Pb-free reflow profile . . . . . . . . . . . . . . . . . . . . . . . . . .see link below
http://www.intersil.com/pbfree/Pb-FreeReflow.asp
Recommended Operating Conditions
VDD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5V ±10%
VOUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2V to 3V
RFREQ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3kΩ (min)
RAMP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.25kΩ (min)
fOSC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60MHZ to 600MHz
IOUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10mAP-P to 100mAP-P
CAUTION: Do not operate at or near the maximum ratings listed for extended periods of time. Exposure to such conditions may adversely impact product reliability and
result in failures not covered by warranty.
IMPORTANT NOTE: All parameters having Min/Max specifications are guaranteed. Typical values are for information purposes only. Unless otherwise noted, all tests
are at the specified temperature and are pulsed tests, therefore: TJ = TC = TA
Supply and Voltage Characteristics
VDD = +5V, TA = +25°C, RL = 10Ω, RFREQ = 5210Ω (fOSC = 350MHz), RAMP = 2540Ω
(IOUT = 50mAP-P measured at 60MHz), VOUT = 2.2V
PARAMETER
DESCRIPTION
CONDITIONS
MIN
(Note 1)
TYP
4.5
MAX
(Note 1)
UNIT
5.5
V
PSOR
Power Supply Operating Range
ISO
Supply Current Disabled
VOUT < VCUTOFF
550
750
µA
ISTYP
Supply Current Typical Conditions
RFREQ = 5.21kΩ, RAMP = 2.54kΩ
18.5
22
mA
ISLO
Supply Current Low Conditions
RFREQ = 30.5kΩ, RAMP = 12.7kΩ
4.75
mA
ISHI
Supply Current High Conditions
RFREQ = 3.05kΩ, RAMP = 1.27kΩ
32
mA
VFREQ
Voltage at RFREQ Pin
1.27
V
VRAMP
Voltage on RAMP Pin
1.27
V
VCUTOFF
Monitoring Voltage of IOUT Pin
1.1
1.4
V
Oscillator Characteristics VDD = +5V, TA = +25°C, RL = 10Ω, RFREQ = 5210Ω (fOSC = 350MHz), RAMP = 2540Ω (IOUT = 50mAP-P
measured at 60MHz), VOUT = 2.2V
PARAMETER
DESCRIPTION
CONDITIONS
MIN
(Note 1)
TYP
MAX
(Note 1)
UNIT
300
350
400
MHz
fOSC
Frequency Tolerance
Unit-unit frequency variation
fHIGH
Frequency Range High
RFREQ = 3.05kΩ
600
MHz
fLOW
Frequency Range Low
RFREQ = 30.5kΩ
60
MHz
TCOSC
Frequency Temperature Sensitivity
0°C to +70°C ambient
50
ppm/°C
PSRROSC
Frequency Change ΔF/F
VDD from 4.5V to 5.5V
1
%
Driver Characteristics
PARAMETER
VDD = +5V, TA = +25°C, RL = 10Ω, RFREQ = 30.5kΩ (fOSC = 60MHz), RAMP = 2540Ω (IOUT = 50mAP-P
measured at 60MHz), VOUT = 2.2V
DESCRIPTION
CONDITIONS
MIN
(Note 1)
TYP
MAX
(Note 1)
UNIT
AMPHIGH
Amplitude Range High
RAMP = 1.27kΩ
100
mAP-P
AMPLOW
Amplitude Range Low
RAMP = 12.7kΩ
10
mAP-P
IOSNOM
Offset Current @ 2.2V
RFREQ = 5210Ω, VOUT = 2.2V
-4
mA
IOSHIGH
Offset Current @ 2.8V
RFREQ = 5210Ω, VOUT = 2.8V
-4.8
mA
2
FN7218.3
August 8, 2007
EL6203
Driver Characteristics
PARAMETER
VDD = +5V, TA = +25°C, RL = 10Ω, RFREQ = 30.5kΩ (fOSC = 60MHz), RAMP = 2540Ω (IOUT = 50mAP-P
measured at 60MHz), VOUT = 2.2V (Continued)
DESCRIPTION
MIN
(Note 1)
CONDITIONS
TYP
MAX
(Note 1)
UNIT
IOSLOW
Offset Current @ 1.8V
RFREQ = 5210Ω, VOUT = 1.8V
-3.5
mA
IOUTP-P
Output Current Tolerance
Defined as one standard deviation
2
%
Duty Cycle
Output Push Time/Cycle Time
RFREQ = 5210Ω
43
%
PSRRAMP
Amplitude Change of Output ΔI/I
VDD from 4.5V to 5.5V
-54
dB
TON
Auto Turn-on Time
Output voltage step from 0V to 2.2V
15
µs
TOFF
Auto Turn-off Time
Output voltage step from 2.2V to 0V
0.5
µs
IOUTN
Output Current Noise Density
RFREQ = 5210Ω, measured @ 10MHz
2.5
nA/√Hz
NOTE:
1. Parts are 100% tested at +25°C. Over-temperature limits established by characterization and are not production tested.
Pin Descriptions
PIN NAME
PIN TYPE
PIN DESCRIPTION
1
VDD
Positive power for laser driver (4.5V to 5.5V)
2
GND
Chip ground pin (0V)
3
IOUT
Current output to laser diode
4
RAMP
Set pin for output current amplitude
5
RFREQ
Set pin for oscillator frequency
IOUT Control
VOUT
IOUT
Less than VCUTOFF
OFF
More than VCUTOFF
Normal Operation
3
FN7218.3
August 8, 2007
EL6203
Typical Performance Curves - VDD = 5V, TA = +25°C, RL = 10Ω, RFREQ = 5.21kΩ, RAMP = 2.54kΩ, VOUT = 2.2V unless
otherwise specified.
500
400
8
Typical
Production
Distortion
7
Measured from 40°C to +85°C
NUMBER OF PARTS
NUMBER OF PARTS
6
300
200
5
4
3
2
100
1
FREQUENCY (MHz)
90
78
66
FIGURE 2. FREQUENCY DRIFT WITH TEMPERATURE
700
700
Frequency=1824 * 1kΩ / RFREQ (MHz)
Frequency=1824 * 1kΩ / RFREQ (MHz)
600
600
500
500
FREQUENCY (MHz)
FREQUENCY (MHz)
54
FREQUENCY TC (ppm/°C)
FIGURE 1. FREQUENCY DISTRIBUTION
400
300
200
100
400
300
200
100
0
0
0
5
10
15
20
25
30
35
0
0.05
0.1
0.15
RFREQ (kΩ)
0.2
0.25
0.3
0.35
1kΩ / RFREQ
FIGURE 4. FREQUENCY vs 1/RFREQ
FIGURE 3. FREQUENCY vs RFREQ
180
180
160
IOUT PK-PK measured @60/350/600MHz
160
IOUT PK-PK measured @60/350/600MHz
140
(over-shoot included)
140
(over-shoot included)
OUTPUT CURRENT (mA)
OUTPUT CURRENt (mA)
42
30
18
6
390
382
374
366
358
350
342
334
326
318
0
310
0
120
100
Amplitude PK-PK=127 * 1kΩ / RAMP (mA)
measured @60MHz
80
(over-shoot not included)
60
40
120
100
80
60
Amplitude PK-PK=
127 * 1kΩ / RAMP (mA)
measured @60MHz
40
20
20
0
0
(over-shoot not included)
0
2
4
6
8
10
12
RAMP (kΩ)
FIGURE 5. OUTPUT CURRENT vs RAMP
4
14
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1kΩ / RAMP
FIGURE 6. OUTPUT CURRENT vs 1/RAMP
FN7218.3
August 8, 2007
EL6203
Typical Performance Curves - VDD = 5V, TA = +25°C, RL = 10Ω, RFREQ = 5.21kΩ, RAMP = 2.54kΩ, VOUT = 2.2V unless
otherwise specified. (Continued)
25
35
SUPPLY CURRENT (mA)
SUPPLY CURRENt (mA)
30
20
15
25
20
15
10
0
0
0
5
10
15
20
25
30
35
0
5
10
15
RFREQ (kΩ)
25
30
35
FIGURE 8. SUPPLY CURRENT vs RAMP
360
100
355
95
IOUT PK-PK (mA)
FREQUENCY (MHz)
FIGURE 7. SUPPLY CURRENT vs RFREQ
350
345
340
4.4
20
RAMP (kΩ)
90
85
4.6
4.8
5
5.2
5.4
80
4.4
5.6
4.6
4.8
SUPPLY VOLTAGE (V)
5
5.2
5.4
5.6
SUPPLY VOLTAGE (V)
FIGURE 9. FREQUENCY vs SUPPLY VOLTAGE
FIGURE 10. PEAK-TO-PEAK OUTPUT CURRENt vs SUPPLY
VOLTAGE
21
400
FREQUENCY (MHz)
SUPPLY CURRENT (mA)
380
20
19
360
340
18
320
17
4.4
4.6
4.8
5
5.2
5.4
5.6
SUPPLY VOLTAGE (V)
FIGURE 11. SUPPLY CURRENT vs SUPPLY VOLTAGE
5
300
-50
0
50
100
150
AMBIENT TEMPERATURE (°C)
FIGURE 12. FREQUENCY vs TEMPERATURE
FN7218.3
August 8, 2007
EL6203
Typical Performance Curves - VDD = 5V, TA = +25°C, RL = 10Ω, RFREQ = 5.21kΩ, RAMP = 2.54kΩ, VOUT = 2.2V unless
otherwise specified. (Continued)
95
30
SUPPLY CURRENT (mA)
90
IOUT PK-PK (mA)
85
80
75
70
25
20
15
65
60
-50
0
50
100
10
-50
150
0
AMBIENT TEMPERATURE (°C)
FIGURE 13. PEAK-TO-PEAK OUTPUT CURRENT vs
TEMPERATURE
40mA
50
100
150
AMBIENT TEMPERATURE (°C)
FIGURE 14. SUPPLY CURRENT vs TEMPERATURE
4.0ns
40mA
1.0ns
RFREQ=30.3kΩ
RAMP=2.54kΩ
RFREQ=2.51kΩ
RAMP=2.54kΩ
FIGURE 15. OUTPUT CURRENT @ 60MHz
FIGURE 16. OUTPUT CURRENT @ 350MHz
40mA
0.4ns
RFREQ=3.03kΩ
RAMP=2.54kΩ
RELATIVE AMPLITUDE (dB)
10
-10
-30
-50
-70
-90
340
344
348
352
356
360
FREQUENCY (MHz)
FIGURE 17. OUTPUT CURRENT @ 600MHz
6
FIGURE 18. OUTPUT SPECTRUM-WIDEBAND
FN7218.3
August 8, 2007
EL6203
Block Diagram
VDD
1
GND
2
IOUT
3
DRIVER
OSCILLATOR
5
RFREQ
AUTO SHUT-OFF
REFERENCE
AND BIAS
4
RAMP
Typical Application Circuit
TYPICAL
ROM LASER
DRIVER
EMI
REDUCTION
SUPPLY
FILTER
GAIN
SETTING
RESISTOR
+5V
BEAD
4.7µF
0.1µF
PNP
IAPC
VDD1
2
GND
3
IOUT
RFREQ
5
RFREQ
BEAD
CONTROLLER
GND
0.1µF
EMI
REDUCTION
FILTER
MAIN BOARD
1
FLEX
RAMP
4
RAMP
LASER DIODE
PHOTO
DIODE
AMPLITUD
E SETTING
RESISTOR
FREQUENCY
SETTING
RESISTOR
ON PICKUP
~10mW
LASER OUTPUT
POWER
LASER OUTPUT POWER
THRESHOLD
CURRENT
IAPC
0mW
0mA
~60mA
LASER CURRENT
OSCILLATOR CURRENT
7
FN7218.3
August 8, 2007
EL6203
Applications Information
Product Description
The EL6203 is a solid state, low-power, high-speed laser
modulation oscillator with external resistor-adjustable
operating frequency and output amplitude. It is designed to
interface easily to laser diodes to break up optical feedback
resonant modes and thereby reduce laser noise. The output
of the EL6203 is composed of a push-pull current source,
switched alternately at the oscillator frequency. The output
and oscillator are automatically disabled for power saving
when the average laser voltage drops to less than 1.1V. The
EL6203 has the operating frequency from 60MHz to
600MHz and the output current from 10mAP-P to 100mAP-P.
The supply current is only 18.5mA for the output current of
50mAP-P at the operating frequency of 350MHz.
Theory of Operation
A typical semiconductor laser will emit a small amount of
incoherent light at low values of forward laser current. But
after the threshold current is reached, the laser will emit
coherent light. Further increases in the forward current will
cause rapid increases in laser output power. A typical
threshold current is 35mA and a typical slope efficiency is
0.7mW/mA.
When the laser is lasing, it will often change its mode of
operation slightly, due to changes in current, temperature, or
optical feedback into the laser. In a DVD-ROM, the optical
feedback from the moving disk forms a significant noise
factor due to feedback-induced mode hopping. In addition to
the mode hopping noise, a diode laser will roughly have a
constant noise level regardless of the power level when a
threshold current is exceeded.
The oscillator is designed to produce a low noise oscillating
current that is added to the external DC current. The
effective AC current is to cause the laser power to change at
the oscillator frequency. This change causes the laser to go
through rapid mode hopping. The low frequency component
of laser power noise due to mode hopping is translated up to
sidebands around the oscillator frequency by this action.
Since the oscillator frequency can be filtered out of the low
frequency read and serve channels, the net result is that the
laser noise seems to be reduced. The second source of
laser noise reduction is caused by the increase in the laser
power above the average laser power during the pushingcurrent time. The signal-to-noise ratio (SNR) of the output
power is better at higher laser powers because of the almost
constant noise power when a threshold current is exceeded.
In addition, when the laser is off during the pulling-current
time, the noise is also very low.
RAMP and RFREQ Value Setting
and ensure that the high frequency components reach the
junction without having to charge the junction capacitance.
Generally, it is desirable to make the oscillator currents as
large as possible to obtain the greatest reduction in laser
noise. But it is not a trivial matter to determine this critical
value. The amplitude depends on the wave shape of the
oscillator current reaching the laser junction.
If the output current is sinusoidal and the components in the
output circuit are fixed and linear, then the shape of the
current will be sinusoidal. But the amount of current reaching
the laser junction is a function of the circuit parasitics. These
parasitics can result in a resonant increase in output
depending on the frequency due to the junction capacitance
and layout. Also, the amount of junction current causing
laser emission is variable with frequency due to the junction
capacitance. In conclusion, the sizes of the RAMP and
RFREQ resistors must be determined experimentally. A good
starting point is to take a value of RAMP for a peak-to-peak
current amplitude less than the minimum laser threshold
current and a value of RFREQ for an output current close to a
sinusoidal wave form (refer to the “Typical Performance
Curves” on page 4).
RAMP and RFREQ Pin Interfacing
Figure 19 shows an equivalent circuit of pins associated with
the RAMP and RFREQ resistors. VREF is roughly 1.27V for
both RAMP and RFREQ. The RAMP and RFREQ resistors
should be connected to the non-load side of the power
ground to avoid noise pick-up. These resistors should also
return to the EL6203's ground very directly to prevent noise
pickup. They also should have minimal capacitance to
ground. Trimmer resistors can be used to adjust initial
operating points.
+
VREF
-
PIN
FIGURE 19. RAMP AND RFREQ PIN INTERFACE
External voltage sources can be coupled to the RAMP and
RFREQ pins to effect frequency or amplitude modulation or
adjustment. It is recommended that a coupling resistor of 1k
be installed in series with the control voltage and mounted
directly next to the pin. This will keep the inevitable highfrequency noise of the EL6203's local environment from
propagating to the modulation source, and it will keep
parasitic capacitance at the pin minimized.
The laser should always have a forward current during
operation. This will prevent the laser voltage from collapsing,
8
FN7218.3
August 8, 2007
EL6203
Supply Bypassing and Grounding
The resistance of bypass-capacitors and the inductance of
bonding wires prevent perfect bypass action, and 150mVP-P
noise on the power lines is common. There needs to be a
lossy bead inductance and secondary bypass on the supply
side to control signals from propagating down the wires.
Figure 20 shows the typical connection.
L SERIES: 70Ω REACTANCE AT 300MHz
EL6203
The supply current of the EL6203 depends on the peak-topeak output current and the operating frequency, which are
determined by resistors RAMP and RFREQ. The supply
current can be approximately predicted by Equation 2:
Also important is circuit-board layout. At the EL6203's
operating frequencies, even the ground plane is not lowimpedance. High frequency current will create voltage drops
in the ground plane. Figure 21 shows the output current
loops.
GND
SUPPLY
BYPASS
SOURCING CURRENT LOOP
SINKING CURRENT LOOP
LASER
DIODE
FIGURE 21. OUTPUT CURRENT LOOPS
For the pushing current loop, the current flows through the
bypass capacitor, into the EL6203 supply pin, out the IOUT
pin to the laser, and from the laser back to the decoupling
capacitor. This loop should be small.
For the pulling current loop, the current flows into the IOUT
pin, out of the ground pin, to the laser cathode, and from the
laser diode back to the IOUT pin. This loop should also be
small.
Power Dissipation
With the high output drive capability, it is possible for the
EL6203 to exceed the +125°C “absolute-maximum junction
temperature” under certain conditions. Therefore, it is
important to calculate the maximum junction temperature for
the application to determine if the conditions need to be
modified for the oscillator to remain in the safe operating
area.
9
PDMAX = Maximum power dissipation in the package
θJA = Thermal resistance of the package
FIGURE 20. RECOMMENDED SUPPLY BYPASSING
RAMP
where
TAMAX = Maximum ambient temperature
0.1µF
CHIP
GND
RFREQ
(EQ. 1)
TJMAX = Maximum junction temperature
+5V
0.1µF
CHIP
T JMAX - T AMAX
P DMAX = --------------------------------------------Θ JA
31.25mA × 1kΩ 30mA × 1kΩ
I SUP = ------------------------------------------- + ---------------------------------- + 0.6mA
R FREQ
R AMP
(EQ. 2)
The power dissipation can be calculated from Equation 3:
P D = V SUP × I SUP
(EQ. 3)
Here, VSUP is the supply voltage. Figures 22 and 23 provide
a convenient way to see if the device will overheat. The
maximum safe power dissipation can be found graphically,
based on the package type and the ambient temperature. By
using Equation 3, it is a simple matter to see if PD exceeds
the device's power derating curve. To ensure proper
operation, it is important to observe the recommended
derating curve shown in Figures 22 and 23. A flex circuit
may have a higher θJA, and lower power dissipation would
then be required.
JEDEC JESD51-3 LOW EFFECTIVE THERMAL
CONDUCTIVITY TEST BOARD
0.6
0.5
POWER DISSIPATION (W)
VS
The maximum power dissipation allowed in a package is
determined according to Equation 1:
488mW
0.4
θ
JA
=
0.3
5L
+2
dS
OT
-2
3
56
°C
/W
0.2
0.1
0
0
25
50
75
85
100
125
150
AMBIENT TEMPERATURE (°C)
FIGURE 22. PACKAGE POWER DISSIPATION vs
AMBIENT TEMPERATURE
FN7218.3
August 8, 2007
EL6203
JEDEC JESD51-7 HIGH EFFECTIVE THERMAL
CONDUCTIVITY TEST BOARD
0.6
POWER DISSIPATION (W)
0.5
543mW
5L
θ
0.4
JA
=
0.3
d
SO
T23
+2
30
°C
/W
0.2
0.1
0
0
25
50
75
85
100
125
150
AMBIENT TEMPERATURE (°C)
FIGURE 23. PACKAGE POWER DISSIPATION vs
AMBIENT TEMPERATURE
10
FN7218.3
August 8, 2007
EL6203
SOT-23 Package Family
MDP0038
e1
D
SOT-23 PACKAGE FAMILY
A
MILLIMETERS
6
N
4
E1
2
E
SYMBOL
SOT23-5
SOT23-6
TOLERANCE
A
1.45
1.45
MAX
A1
0.10
0.10
±0.05
A2
1.14
1.14
±0.15
b
0.40
0.40
±0.05
c
0.14
0.14
±0.06
D
2.90
2.90
Basic
3
0.15 C D
1
2X
2
3
0.20 C
5
2X
e
0.20 M C A-B D
B
b
NX
0.15 C A-B
1
3
E
2.80
2.80
Basic
E1
1.60
1.60
Basic
e
0.95
0.95
Basic
e1
1.90
1.90
Basic
L
0.45
0.45
±0.10
L1
0.60
0.60
Reference
N
5
6
Reference
D
2X
Rev. F 2/07
NOTES:
C
A2
SEATING
PLANE
1. Plastic or metal protrusions of 0.25mm maximum per side are not included.
2. Plastic interlead protrusions of 0.25mm maximum per side are not included.
A1
0.10 C
3. This dimension is measured at Datum Plane “H”.
NX
4. Dimensioning and tolerancing per ASME Y14.5M-1994.
5. Index area - Pin #1 I.D. will be located within the indicated zone (SOT236 only).
(L1)
6. SOT23-5 version has no center lead (shown as a dashed line).
H
A
GAUGE
PLANE
c
L
0.25
0° +3°
-0°
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11
FN7218.3
August 8, 2007