Nu har jag åter fått lite tid till detta. Så, om Optokopplaren OP1
Jag har svårt att se vad som står på den, men har försökt ta en massa foton:

Jag tycker att det verkar stå
L1350
817C°
Y
Möjligtvis kan det då vara denna LTV-817:
http://us.100y.com.tw/viewproduct.asp?MNo=19327
http://us.100y.com.tw/pdf_file/LTV.pdf
Så L1350:
L = LTV
13 = Året
50 = Veckan
Och 817C°:
817 = Modellen
C = CURRENT TRANSFER RATIO CTR = 200 ~ 400 %
Y = Factory code, Y = Thailand
KORT INFO från
http://us.100y.com.tw/viewproduct.asp?MNo=19327
Description Transistor Output Optocoupler
Emitter If 50mA
Emitter Vf 1.2V
Detector (Vceo) 35V
Detector Iceo 50mA
CTR(%) 200~400%
Isolation(Vrms) 5000Vrms
Pins/Package 4P-DIP
FEATURES
* Current transfer ratio ( CTR : MIN. 50% at IF =5mA, VCE =5V )
* High input-output isolation voltage ( Viso =5,000Vrms )
* Response time ( tr : TYP. 4μs at VCE =2V, IC =2mA, RL =100Ω )
* Dual-in-line package :
LTV-817 : 1-channel type
LTV-827 : 2-channel type
LTV-847 : 4-channel type
* Wide lead spacing package :
LTV-817M : 1-channel type
LTV-827M : 2-channel type
LTV-847M : 4-channel type
* Surface mounting package :
LTV-817S : 1-channel type
LTV-827S : 2-channel type
LTV-847S : 4-channel type
* Tape and reel packaging :
LTV-817S-TA1, LTV-827S-TA1
* UL approved ( No. E113898 )
* TUV approved ( No. R9653630 )
* CSA approved ( No. CA91533-1 )
* FIMKO approved ( No. 202634 )
* NEMKO approved ( No. P98101945 )
* DEMKO approved ( No. 307857 )
* SEMKO approved ( No. 9845089 / 01-30 )
* VDE approved (No. 094722 )
* BSI approved ( No. 8334 )
* ◇ Critical characteristic
* ○ Safety or compliance characteristic.
ABSOLUTE MAXIMUM RATING ( Ta = 25°C )
INPUT
Forward Current IF 50 mA
Reverse Voltage VR 6 V
Power Dissipation P 70 mW
OUTPUT
Collector - Emitter Voltage VCEO 35 V
Emitter - Collector Voltage VECO 6 V
Collector Current IC 50 mA
Collector Power Dissipation PC 150 mW
Total Power Dissipation Ptot 200 mW
*1 Isolation Voltage ○ Viso 5,000 Vrms
Operating Temperature Topr -30 ~ +100 °C
Storage Temperature Tstg -55 ~ +125 °C
*2 Soldering Temperature Tsol 260 °C
*1. AC For 1 Minute, R.H. = 40 ~ 60%
Isolation voltage shall be measured using the following method.
(1) Short between anode and cathode on the primary side and between collector and emitter on the secondary side.
(2) The isolation voltage tester with zero-cross circuit shall be used.
(3) The waveform of applied voltage shall be a sine wave.
*2. For 10 Seconds
ELECTRICAL – OPTICAL CHARACTERISTICS ( Ta = 25°C )
INPUT
Forward Voltage VF typ 1.2 V, max 1.4 V, IF=20mA
Reverse Current IR max 10 μA , VR=4V
Terminal Capacitance C typ 30 pF, max 250 pF, V=0, f=1KHz
OUTPUT
Collector Dark Current ICEO , max 100 nA, VCE=20V, IF=0
Collector-Emitter Breakdown Voltage BVCEO, min 35 V, IC=0.1mA, IF=0
Emitter-Collector Breakdown Voltage BVECO, min 6 V, IE=10μA, IF=0
TRANSFER CHARACTERISTICS
Collector Current IC min 2.5 mA, max 30 mA, IF=5mA, VCE=5V
*1 Current Transfer Ratio ◇CTR, min 50, max 600 %, IF=5mA, VCE=5V
*1 = CTR = (IC / IF) *100%
Collector-Emitter Saturation Voltage VCE(sat), typ 0.1V, max 0.2 V, IF=20mA, IC=1mA
Isolation Resistance Riso, min 5×10^10 Ω, typ 1x10^11 Ω, DC500V, 40 ~ 60% R.H.
Floating Capacitance Cf, typ 0.6pF, max 1 pF, V=0, f=1MHz
Cut-Off Frequency fc, typ 80 kHz, VCE=5V, IC=2mA, RL=100Ω, -3dB
Response Time (Rise) tr, typ 4 μs, max 18μs, VCE=2V, IC=2mA, RL=100Ω
Response Time (Fall) tf, typ 3 μs, max 18 μs, VCE=2V, IC=2mA, RL=100Ω
Har försökt leta på Elfas hemsida (tror det ska vara en ”Optocouplers with Photo-Transistor Output”?) efter en liknande, men hittar ingen. Enda som är ”liknande” är dessa:
https://www.elfa.se/elfa3~se_en/elfa/in ... &toc=20439
https://www.elfa.se/elfa3~se_en/elfa/in ... &toc=20439
https://www.elfa.se/elfa3~se_en/elfa/in ... &toc=20439
De har enligt
https://www1.elfa.se/data1/wwwroot/asse ... ng_tds.pdf
Current transfer ratio (CTR: 50~600% at IF=5mA, VCE=5V)
High isolation voltage between input and output (Viso=5000 V rms )
Min har enligt
http://us.100y.com.tw/pdf_file/LTV.pdf
* Current transfer ratio ( CTR : MIN. 50% at IF =5mA, VCE =5V )
* High input-output isolation voltage ( Viso =5,000Vrms )
* Response time ( tr : TYP. 4μs at VCE =2V, IC =2mA, RL =100Ω )
Tyvärr vet jag inte vilka värden som är viktiga, så det är svårt för mig att välja. Hur skulle ni tänka? Beställa från
http://us.100y.com.tw/viewproduct.asp?MNo=19327 ?