TLP421
TOSHIBA Photocoupler
GaAs Ired & Photo−Transistor
TLP421
Unit in mm
Office Equipment
Household Appliances
Solid State Relays
Switching Power Supplies
Various Controllers
Signal Transmission Between Different Voltage Circuits
The TOSHIBA TLP421 consists of a silicone photo−transistor optically
coupled to a gallium arsenide infrared emitting diode in a four lead
plastic DIP (DIP4) with having high isolation voltage
(AC: 5kVRMS (min)).
•
Collector-emitter voltage: 80V (min.)
•
Current transfer ratio: 50% (min.)
TOSHIBA
Rank GB: 100% (min.)
Weight: 0.26 g (typ.)
•
Isolation voltage: 5000Vrms (min.)
•
UL recognized: UL1577
Pin Configurations
•
BSI approved: BS EN60065: 2002
(top view)
11−5B2
Approved no.8411
BS EN60950-1: 2002
1
•
SEMKO approved: EN60065, EN60950, EN60335
4
2
Approved no.8412
3
Approved no.9910249/01
1 : Anode
2 : Cathode
3 : Emitter
4 : Collector
1
2007-10-01
TLP421
Absolute Maximum Ratings (Ta = 25°C)
Characteristic
Symbol
Rating
IF
60
mA
ΔIF / °C
−0.7
mA / °C
IFP
1
A
PD
100
mW
ΔPD / °C
−1.0
mW / °C
Reverse voltage
VR
5
V
Junction temperature
Tj
125
°C
Collector−emitter voltage
VCEO
80
V
Emitter−collector voltage
VECO
7
V
Collector current
IC
50
mA
Power dissipation(single circuit)
PC
150
mW
ΔPC / °C
−1.5
mW / °C
Tj
125
°C
Operating temperature range
Topr
−55~100
°C
Storage temperature range
Tstg
−55~125
°C
Lead soldering temperature (10s)
Tsol
260
°C
Total package power dissipation
PT
250
mW
ΔPT / °C
−2.5
mW / °C
BVS
5000
Vrms
Forward current
Forward current derating(Ta ≥ 39°C)
LED
Pulse forward current
(Note 2)
Power dissipation
Detector
Power dissipation derating
Power dissipation derating
(Ta ≥ 25°C)(single circuit)
Junction temperature
Total package power dissipation derating
(Ta ≥ 25°C)
Isolation voltage
(Note 3)
Unit
Note: Using continuously under heavy loads (e.g. the application of high temperature/current/voltage and the
significant change in temperature, etc.) may cause this product to decrease in the reliability significantly even
if the operating conditions (i.e. operating temperature/current/voltage, etc.) are within the absolute maximum
ratings.
Please design the appropriate reliability upon reviewing the Toshiba Semiconductor Reliability Handbook
(“Handling Precautions”/“Derating Concept and Methods”) and individual reliability data (i.e. reliability test
report and estimated failure rate, etc).
(Note 2): 100μs pulse, 100Hz frequency
(Note 3): AC, 1 min., R.H.≤ 60%. Apply voltage to LED pin and detector pin together.
Recommended Operating Conditions
Characteristic
Symbol
Min
Typ.
Max
Unit
Supply voltage
VCC
―
5
24
V
Forward current
IF
―
16
25
mA
Collector current
IC
―
1
10
mA
Topr
−25
―
85
°C
Operating temperature
Note: Recommended operating conditions are given as a design guideline to obtain expected performance of the
device. Additionally, each item is an independent guideline respectively. In developing designs using this
product, please confirm specified characteristics shown in this document.
3
2007-10-01
