M221-L
1 Form A
Solid State Relay
The M221-L is a bi-directional, single-pole, single-throw, normally open multipurpose solid-state relay in a miniature 4-pin small outline
package. It is designed to replace electromechanical relays in general purpose switching applications. The relay consists of an integrated
circuit that drives two rugged source-to-source enhancement type DMOS transistors - optically coupled to a light emitting diode. This
device also includes current-limiting circuitry. During increased load currents or transient current spikes, this circuitry acts to limit current
in order to protect itself as well as downstream components.
DESCRIPTION
FEATURES
APPLICATIONS
OPTIONS/SUFFIXES*
SCHEMATIC DIAGRAM
ABSOLUTE MAXIMUM RATINGS*
APPROVALS
Transient over current protection (170mA TYP)
Low input control power consumption (2.5mA TYP)
120mA maximum continuous load current
30 ohms maximum on-resistance
Ultra miniature 4-pin small outline package
High input-to-output isolation
Long life/high reliability
Reed relay replacement
Meter reading systems
Medical equipment
Battery monitoring
Multiplexers
Tape and Reel
-TR
NOTE: Suffixes listed above are not included in marking on
device for part number identification.
PARAMETER
UNIT
MIN
TYP
MAX
Storage Temperature
C
-55
125
Operating Temperature
C
-40
85
Continuous Forward
Current
mA
50
Peak Forward Current
(1us)
A
1
Reverse Input Control
Voltage
V
5
Output Power Dissipation
mW
400
*The values indicated are absolute stress ratings. Functional operation of the
device is not implied at these or any conditions in excess of those defined in
electrical characteristics section of this document. Exposure to Absolute
Ratings may cause permanent damage to the device and may adversely
affect reliability.
BABT CERTIFICATE #650192:
BS EN 60950, BS EN 41003, BS EN 60065
2004 Solid State Optronics San Jos, CA
www.ssousa.com +1.408.293.4600
Page 1 of 5
M221-L
rev 1.40 (10/25/2004)
M221-L
1 Form A
Solid State Relay
ELECTRICAL CHARACTERISTICS - 25C
PARAMETER
UNIT
MIN
TYP
MAX TEST CONDITIONS
INPUT SPECIFICATIONS
LED Forward Voltage
V
1.2
1.5
If = 10mA
LED Reverse Voltage
V
6
12
Ir = 10uA
Turn-On Current
m
2.5
5
Io = 120mA
A
Turn-Off Current
m
0.5
A
OUTPUT SPECIFICATIONS
Blocking Voltage
V
400
Io = 1uA
Continuous Load Current
m
120
If = 5mA
A
Current Limit
m
140
170
220
If = 5mA, T = 5ms
A
On-Resistance
22
30
Io = 120mA
Leakage Current
0.2
1
Vo = 400V
A
Output Capacitance
p
25
50
Vo = 25V, f = 1.0MHz
F
Offset Voltage
m
0.2
If = 5mA
V
COUPLED SPECIFICATIONS
Isolation Voltage
V
1500
T = 1 minute
Turn-On Time
m
1.5
5
If = 5mA, Io = 120mA
s
Turn-Off Time
m
0.1
0.5
If = 5mA, Io = 120mA
s
Isolation Resistance
G
100
Coupled Capacitance
p
3
F
Contact Transient Ratio
V
2000
7000
dV = 50V
/
s
2004 Solid State Optronics San Jos, CA
www.ssousa.com +1.408.293.4600
Page 2 of 5
M221-L
rev 1.40 (10/25/2004)
M221-L
1 Form A
Solid State Relay
PERFORMANCE DATA
0
10
20
30
40
0
0.04 0.08 0.12 0.16 0.2 0.24 0.28
Turn-Off Tim e (m s)
D
e
v
i
c
e
C
ount
M221-L
Typical Turn-Off Time Distribution
N = 100, Ambient Temperature = 25C
0
10
20
30
40
20
21
22
23
24
25
26
27
On-Resistance (ohm s)
D
e
v
i
c
e
C
ount
M221-L
0
10
20
30
40
50
60
0.05 0.1 0.15 0.2 0.25 0.3 0.35 0.4
Leakage Current (uA)
D
e
v
i
c
e
C
ount
Typical On-Resistance Distribution
N = 100, Ambient Temperature = 25C
M221-L
Typical Leakage Current Distribution
N = 100, Ambient Temperature = 25C
0
10
20
30
40
400 410 420 430 440 450 460 470
Blocking Voltage (V)
D
evic
e
C
o
u
n
t
M221-L
0
50
100
150
-4
0
-2
0
0
20
40
60
80
Tem perature (C)
Loa
d C
u
r
r
e
n
t
(mA
)
Typical Blocking Voltage Distribution
N = 100, Ambient Temperature = 25C
M221-L
Maximum Load Current vs. Temperature
0
10
20
30
40
1.1
1.2
1.3
1.4
1.5
1.6
1.7
1.8
Turn-On Tim e (m s)
De
v
i
c
e
Co
u
n
t
M221-L
Typical Turn-On Time Distribution
N = 100, Ambient Temperature = 25C
2004 Solid State Optronics San Jos, CA
www.ssousa.com +1.408.293.4600
Page 3 of 5
M221-L
rev 1.40 (10/25/2004)
M221-L
1 Form A
Solid State Relay
MECHANICAL DIMENSIONS
4 PIN SMALL OUTLINE PACKAGE
END VIEW
TOP VIEW
BACK VIEW
2004 Solid State Optronics San Jos, CA
www.ssousa.com +1.408.293.4600
Page 4 of 5
M221-L
rev 1.40 (10/25/2004)
M221-L
1 Form A
Solid State Relay
Solid State Optronics (SSO) makes no warranties or representations with regards to the completeness and accuracy of this document. SSO
reserves the right to make changes to product description, specifications at any time without further notice.
SSO shall not assume any liability arising out of the application or use of any product or circuit described herein. Neither circuit patent
licenses nor indemnity are expressed or implied.
Except as specified in SSO's Standard Terms & Conditions, SSO disclaims liability for consequential or other damage, and we make no other
warranty, expressed or implied, including merchantability and fitness for particular use.
DISCLAIMER
LIFE SUPPORT POLICY
SSO does not authorize use of its devices in life support applications wherein failure or malfunction of a device may lead to personal injury or
death. Users of SSO devices in life support applications assume all risks of such use and agree to indemnify SSO against any and all
damages resulting from such use. Life support devices are defined as devices or systems which, (a) are intended for surgical implant into the
body, or (b) support or sustain life, and (c) whose failure to perform when used properly in accordance with instructions for use can be
reasonably expected to result in significant injury to the user, or (d) a critical component in any component of a life support device or system
whose failure can be reasonably expected to cause failure of the life support device or system, or to affect its safety or effectiveness.
2004 Solid State Optronics San Jos, CA
www.ssousa.com +1.408.293.4600
Page 5 of 5
M221-L
rev 1.40 (10/25/2004)
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