MOC256M — AC Input Phototransistor Small Outline Surface Mount Optocouplers
©2005 Fairchild Semiconductor Corporation www.fairchildsemi.com
MOC256M Rev. 1.0.1
April 2009
MOC256M
AC Input Phototransistor Small Outline
Surface Mount Optocouplers
Features
■
UL recognized file (#E90700, Volume 2)
■
VDE recognized (File #136616)
– Ordering option V (i.e. MOC256VM)
■
Industry standard SOIC-8 surface mountable
package, with 0.050" lead spacing
■
Available in tape and reel option
■
Bidirectional AC input (protection against reversed DC
bias)
■
Guaranteed CTR symmetry of 2:1 maximum
■
High input-output isolation of 2500 Vac (rms)
guaranteed
Description
The MOC256M is an AC input phototransistor opto-
coupler. The device consists of two infrared emitters
connected in anti-parallel and coupled to a silicon NPN
phototransistor detector. It is designed for applications
requiring the detection or monitoring of AC signals. The
device is constructed with a standard SOIC-8 footprint.
Schematic
BASE
N/CAC IN
AC IN
1
2
3
45
6
7
8
EMITTER
COLLECTORN/C
N/C
©2005 Fairchild Semiconductor Corporation www.fairchildsemi.com
MOC256M Rev. 1.0.1 2
MOC256M — AC Input Phototransistor Small Outline Surface Mount Optocouplers
Absolute Maximum Ratings
(T
A
= 25°C Unless otherwise specified)
Stresses exceeding the absolute maximum ratings may damage the device. The device may not function or be
operable above the recommended operating conditions and stressing the parts to these levels is not recommended.
In addition, extended exposure to stresses above the recommended operating conditions may affect device reliability.
The absolute maximum ratings are stress ratings only.
Symbol Rating Value Unit
EMITTER
I
F
Forward Current – Continuous 60 mA
I
F
(pk) Forward Current – Peak (PW = 100µs, 120 pps) 1.0 A
P
D
LED Power Dissipation @ T
A
= 25°C
Derate above 25°C
90
0.8
mW
mW/°C
DETECTOR
V
CEO
Collector-Emitter Voltage 30 V
V
ECO
Emitter-Base Voltage 7.0 V
I
C
Collector Current-Continuous 150 mA
P
D
Detector Power Dissipation @ T
A
= 25°C
Derate above 25°C
150
1.76
mW
mW/°C
TOTAL DEVICE
V
ISO
Input-Output Isolation Voltage (f = 60Hz, t = 1 min.) 2500 Vac(rms)
P
D
Total Device Power Dissipation @ T
A
= 25°C
Derate above 25°C
250
2.94
mW
mW/°C
T
A
Ambient Operating Temperature Range -40 to +100 °C
T
stg
Storage Temperature Range -40 to +150 °C
©2005 Fairchild Semiconductor Corporation www.fairchildsemi.com
MOC256M Rev. 1.0.1 3
MOC256M — AC Input Phototransistor Small Outline Surface Mount Optocouplers
Electrical Characteristics
(T
A
= 25°C unless otherwise specified)
* Typical values at T
A
= 25°C
Notes:
1. Current Transfer Ratio (CTR) = I
C
/I
F
x 100%.
2. Isolation Surge Voltage, V
ISO
, is an internal device dielectric breakdown rating.
3. For this test, Pins 1 and 2 are common and Pins 5, 6 and 7 are common.
Symbol Parameter Test Conditions Min. Typ.* Max. Unit
EMITTER
V
F
Input Forward Voltage I
F
= ±10mA 1.2 1.5 V
C
J
Input Capacitance V = 0 V, f = 1MHz 20 pF
DETECTOR
I
CEO1
Collector-Emitter Dark Current V
CE
= 10V, T
A
= 25°C 1.0 100 nA
I
CEO2
V
CE
= 10V, T
A
= 100°C 1.0 µA
I
CBO
Collector-Base Dark Current V
CB
= 10V 0.2 nA
BV
CEO
Collector-Emitter Breakdown Voltage I
C
= 10mA 30 100 nA
BV
CBO
Collector-Base Breakdown Voltage I
C
= 100µA 70 120 V
BV
ECO
Emitter-Collector Breakdown Voltage I
E
= 100µA 5 10 V
C
CE
Collector-Emitter Capacitance f = 1.0MHz, V
CE
= 0 7 pF
C
CB
Collector-Base Capacitance f = 1.0MHz, V
CB
= 0 20 pF
C
EB
Emitter-Base Capacitance f = 1.0MHz, V
EB
= 0 10 pF
COUPLED
CTR Current Transfer Ratio
(1)
I
F
= ±10mA, V
CE
= 10V 20 150 %
Output-Collector Current Symmetry I
C
@ I
F
= +10mA, V
CE
= 10V
I
C
@ I
F
= –10mA, V
CE
= 10V
0.5 2.0
V
CE (sat)
Collector-Emitter Saturation Voltage I
C
= 0.5mA, I
F
= ±10mA 0.1 0.4 V
V
ISO
Isolation Surge Voltage
(2)(3)
f = 60Hz AC Peak, t = min. 2500 Vac(rms)
R
ISO
Isolation Resistance
(3)
V = 500V 10
11
Ω
C
ISO
Isolation Capacitance
(3)
V = 0V, f = 1MHz — 0.2 pF
()
©2005 Fairchild Semiconductor Corporation www.fairchildsemi.com
MOC256M Rev. 1.0.1 4
MOC256M — AC Input Phototransistor Small Outline Surface Mount Optocouplers
Typical Performance Curves
Fig. 2 Output Curent vs. Input Current
I
F – LED INPUT CURRENT (mA)
0.1 1 10 100
I
C
– OUTPUT COLLECTOR CURRENT (NORM ALIZED)
0.01
0.1
1
10
V
CE
= 5V
NORMALIZED TO IF = 10mA
Fig. 3 Output Current vs. Ambient Temperature
T
A
– AMBIENT TEMPERATURE (
o
C)
-80 -60 -40 -2 0 0 20406080100120
I
C
– OUTPUT COLLECTOR CURRENT (NOR MALIZED)
0.1
1
10
NORMALIZED TO T
A
= 25
o
C
Fig. 4 Output Current vs. Collector - Emitter Voltage
V
CE
– COLLECTOR -EMITTER VOLTAGE (V)
012345678910
I
C
– OUTPUT COLLECTOR CURRENT (NORMALIZED)
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
I
F
= 10 mA
NORM ALIZED TO V
CE
= 5V
Fig. 5 Dark Current vs. Ambient Temperature
T
A
– AMBIENT TEMPERATURE (
o
C)
020406080100
I
CEO
– COLLECTOR -EMITTER DARK CURRENT (nA)
0.1
1
10
100
1000
10000
V
CE
=10V
Fig. 1 Input Voltage vs. Input Current
VF
– INPUT VOLTAGE (V)
-2.0 -1.5 -1.0 -0.5 0.0 0.5 1.01.52.0
I
F
– INPUT CURRENT (mA)
-100
-80
-60
-40
-20
0
20
40
60
80
100
©2005 Fairchild Semiconductor Corporation www.fairchildsemi.com
MOC256M Rev. 1.0.1 5
MOC256M — AC Input Phototransistor Small Outline Surface Mount Optocouplers
Package Dimensions
8-pin SOIC Surface Mount
Recommended Pad Layout
Package drawings are provided as a service to customers considering Fairchild components. Drawings may change in any manner
without notice. Please note the revision and/or date on the drawing and contact a Fairchild Semiconductor representative to verify or
obtain the most recent revision. Package specifications do not expand the terms of Fairchild’s worldwide terms and conditions,
specifically the warranty therein, which covers Fairchild products.
Always visit Fairchild Semiconductor’s online packaging area for the most recent package drawings:
http://www.fairchildsemi.com/packaging/
Lead Coplanarity: 0.004 (0.10) MAX
0.202 (5.13)
0.182 (4.63)
0.021 (0.53)
0.011 (0.28)
0.050 (1.27) Typ.
0.164 (4.16)
1
8
0.144 (3.66)
0.244 (6.19)
0.224 (5.69)
0.143 (3.63)
0.123 (3.13)
0.008 (0.20)
0.003 (0.08)
0.010 (0.25)
0.006 (0.16)
SEATING PLANE
0.024 (0.61)
0.050 (1.27)
Dimensions in inches (mm).
0.155 (3.94)
0.275 (6.99)
0.060 (1.52)
©2005 Fairchild Semiconductor Corporation www.fairchildsemi.com
MOC256M Rev. 1.0.1 6
MOC256M — AC Input Phototransistor Small Outline Surface Mount Optocouplers
Ordering Information
Marking Information
Option Order Entry Identifier Description
VVVDE 0884
R2 R2 Tape and reel (2500 units per reel)
R2V R2V VDE 0884, Tape and reel (2500 units per reel)
1
2
6
43 5
Definitions
1Fairchild logo
2Device number
3 VDE mark (Note: Only appears on parts ordered with VDE
option – See order entry table)
4 One digit year code, e.g., ‘8’
5Two digit work week ranging from ‘01’ to ‘53’
6 Assembly package code
256
SYYXV
©2005 Fairchild Semiconductor Corporation www.fairchildsemi.com
MOC256M Rev. 1.0.1 7
MOC256M — AC Input Phototransistor Small Outline Surface Mount Optocouplers
Carrier Tape Specifications
4.0 ± 0.10
Ø1.5 MIN
User Direction of Feed
2.0 ± 0.05
1.75 ± 0.10
5.5 ± 0.05
12.0 ± 0.3
8.0 ± 0.10
0.30 MAX
8.3 ± 0.10
3.50 ± 0.20
Dimensions in mm
0.1 MAX 6.40 ± 0.20
5.20 ± 0.20
Ø1.5 ± 0.1
©2005 Fairchild Semiconductor Corporation www.fairchildsemi.com
MOC256M Rev. 1.0.1 8
MOC256M — AC Input Phototransistor Small Outline Surface Mount Optocouplers
Reflow Profile
Profile Freature Pb-Free Assembly Profile
Temperature Min. (Tsmin) 150°C
Temperature Max. (Tsmax) 200°C
Time (t
S
) from (Tsmin to Tsmax) 60–120 seconds
Ramp-up Rate (t
L
to t
P
) 3°C/second max.
Liquidous Temperature (T
L
) 217°C
Time (t
L
) Maintained Above (T
L
) 60–150 seconds
Peak Body Package Temperature 260°C +0°C / –5°C
Time (t
P
) within 5°C of 260°C 30 seconds
Ramp-down Rate (T
P
to T
L
) 6°C/second max.
Time 25°C to Peak Temperature 8 minutes max.
Time (seconds)
Temperature (°C)
Time 25°C to Peak
260
240
220
200
180
160
140
120
100
80
60
40
20
0
TL
ts
tL
tP
TP
Tsmax
Tsmin
120
Preheat Area
Max. Ramp-up Rate = 3°C/S
Max. Ramp-down Rate = 6°C/S
240 360
©2005 Fairchild Semiconductor Corporation www.fairchildsemi.com
MOC256M Rev. 1.0.1 9
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Rev. I40
First Production
MOC256M — AC Input Phototransistor Small Outline Surface Mount Optocouplers
