NTE3049
Optoisolator
Zero Crossing TRIAC Driver
Description:
The NTE3049 consists of a gallium arsenide infrared emitting diode optically coupled to a monolithic
silicon detector performing the function of a Zero Voltage crossing bilateral triac driver.
It is designed for use with a triac in the interface of logic systems to equipment powered from 115 Vac
lines, such as teletypewriters, CRTs, printers, motors, solenoids, and consumer appliances.
Features:
D
Simplifies Logic Control of 110VAC Power
D
Zero Voltage Crossing
D
High Breakdown Voltage: V
DRM
= 250V Min
D
High Isolation Voltage: V
ISO
= 7500V Min
D
dv/dt of 100V/µs Typ
Absolute Maximum Ratings:
(T
A
= +25°C, unless otherwise indicated)
Infrared LED
Reverse Voltage, V
R
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3V
Continuous Forward Current, I
F
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50mA
Total Power Dissipation (T
A
= +25°C), P
D
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120mW
Derate Above 25°C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.33mW/°C
Output Driver
Off–State Output Terminal Voltage, V
DRM
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 250V
Peak Repetitive Surge Current (PW = 100µs, 120pps), I
TSM
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1A
Total Power Dissipation (T
A
= +25°C), P
D
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150mW
Derate Above 25°C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.76mW/°C
Total Device
Isolation Surge Voltage (Peak AC Voltage, 60Hz, 1sec Duration, Note 1), V
ISO
. . . . . . . . . . . 7500V
Total Power Dissipation (T
A
= +25°C), P
D
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 250mW
Derate Above 25°C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.94mW/°C
Junction Temperature Range, T
J
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –40° to +100°C
Ambient Operating Temperature Range, T
A
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –40° to +85°C
Storage Temperature Range, T
stg
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –40° to +150°C
Lead Temperature (During Soldering, 10s), T
L
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +260°C
Note 1 Isolation surge voltage, V
ISO
, is an internal device dielectric breakdown rating.
Electrical Characteristics:
(T
A
= +25°C, unless otherwise specified)
Parameter
Input LED
Reverse Leakage Current
Forward Voltage
I
R
V
F
I
DRM1
V
TM
dv/dt
V
R
= 3V
I
F
= 30mA
LED OFF, Rated V
DRM
, Note 2
I
TM
= 100mA Peak
–
–
0.05
1.3
–
1.5
µA
V
Symbol
Test Conditions
Min
Typ
Max
Unit
Output Detector
(I
F
= 0 unless otherwise specified)
Leakage, Either Direction
Peak On–State Voltage, Either Direction
Critical Rate of Rise of Off–State Voltage
Coupled
LED Trigger Current
Holding Current, Either Direction
Isolation Voltage
Zero Crossing
Inhibit Voltage
Leakage in Inhibit State
V
IH
I
DRM2
I
F
= 15mA, MT
1
–MT
2
Voltage above
which device will not trigger
I
F
= 15mA, Rated V
DRM
, Off–State
–
–
5
–
20
500
V
µA
I
FT
I
H
V
ISO
f = 60Hz, t = 1sec
Main Terminal Voltage = 3V, Note 3
–
–
7500
–
100
–
15
–
–
mA
µA
VAC
pk
–
–
10
1.8
100
3.0
–
nA
V
V/µs
1000 2000
Note 2. Test voltage must be applied within dv/dt rating.
Note 3. All devices are guaranteed to trigger at an I
F
value less than or equal to Max I
FT
. Therefore,
recommended operating I
F
lies between max I
FT
(15mA) and absolute Max I
F
(50mA).
Anode
1
6
Main Terminal
Substrate
Do Not Connect
Main Terminal
1
2
3
Cathode
2
ZERO
CROSSING
CIRCUIT
5
6
5
4
N.C.
3
4
.260
(6.6)
Max
.070 (1.78) Max
.350 (8.89)
Max
.200 (5.08)
Max
.300 (7.62)
.350
(8.89)
Max
.085 (2.16) Max
.100 (2.54)
