CT MICRO CT181GR T1 4 Pin Mini Flat Package Optocoupler for DC DC Converter and Telecom Applications
Product Overview
The CT181 Series is a general-purpose optocoupler featuring a phototransistor optically coupled to a gallium arsenide infrared-emitting diode, housed in a 4-lead Mini-Flat package. It offers high isolation of 3750 VRMS, a creepage distance of 5mm, and an operating temperature range of -55C to 110C. Available with multiple CTR selections, this series is suitable for applications such as DC-DC converters, programmable controllers, telecommunication equipment, and hybrid substrates requiring high-density mounting. The product is designed with a green package and is pending various regulatory approvals including UL, VDE, CQC, and IEC standards.
Product Attributes
- Brand: CT Micro
- Series: CT181 Series
- Package Type: 4-Pin Mini-Flat
- Diode Type: Gallium Arsenide Infrared-emitting diode
- Detector Type: Phototransistor
- Package Material: Green Package
- Regulatory Approvals (Pending): UL - UL1577, VDE - EN60747-5-5, CQC GB4943.1, GB8898, IEC60065, IEC60950
Technical Specifications
| Symbol | Parameters | Test Conditions | Min | Typ | Max | Units | Notes |
|---|---|---|---|---|---|---|---|
| Absolute Maximum Ratings | |||||||
| VISO | Isolation voltage | 3750 | VRMS | ||||
| TOPR | Operating temperature | -55 | +110 | C | |||
| TSTG | Storage temperature | -55 | +150 | C | |||
| TSOL | Soldering temperature | 260 | C | ||||
| PTOT | Total power dissipation | 200 | mW | ||||
| IF (Emitter) | Forward current | 50 | mA | ||||
| IF(TRANS) | Peak transient current | (1s P.W,300pps) | 1 | A | |||
| VR (Emitter) | Reverse voltage | 6 | V | ||||
| PD (Emitter) | Power dissipation | 70 | mW | ||||
| PC (Detector) | Power dissipation | 150 | mW | ||||
| BVCEO | Collector-Emitter Breakdown Voltage | 80 | V | ||||
| BVECO | Emitter-Collector Breakdown Voltage | 7 | V | ||||
| IC (Detector) | Collector Current | 50 | mA | ||||
| Electrical Characteristics | |||||||
| VF | Forward voltage | IF=10mA | - | 1.24 | 1.4 | V | |
| IR | Reverse Current | VR = 5V | - | - | 5 | A | |
| CIN | Input Capacitance | f= 1MHz | - | 10 | 250 | pF | |
| BVCEO | Collector-Emitter Breakdown | IC= 500A | 80 | - | - | V | |
| BVECO | Emitter-Collector Breakdown | IE= 100A | 7 | - | - | V | |
| ICEO | Collector-Emitter Dark Current | VCE= 48V | - | 0.01 | 0.08 | A | |
| ICEO | Collector-Emitter Dark Current | VCE= 48V, TA=85C | - | 2 | 50 | A | |
| CCE | Collector-Emitter Capacitance | f=1MHz | - | 10 | - | pF | |
| Transfer Characteristics | |||||||
| CTR | Current Transfer Ratio (CT181GB) | IF= 5mA, VCE= 5V | 100 | - | 600 | % | |
| CTR | Current Transfer Ratio (CT181GR) | IF= 5mA, VCE= 5V | 100 | - | 300 | % | |
| CTR | Current Transfer Ratio (CT181GB) | IF= 1mA, VCE= 0.4V | 30 | - | - | % | |
| CTR | Current Transfer Ratio (CT181GR) | IF= 1mA, VCE= 0.4V | - | 60 | - | % | |
| VCE(sat) | Collector-emitter saturation voltage | IF= 8mA, IC= 2.4mA | - | - | 0.3 | V | |
| IC(off) | Off-state collector current | VCE= 48V, VF=0.7V | - | 1 | 10 | A | |
| Isolation Characteristics | |||||||
| RIO | Isolation Resistance | VIO= 500VDC | 1x1012 | 1014 | - | ||
| CIO | Isolation Capacitance | f=1MHz | - | 0.5 | - | pF | |
| VISO | Isolation voltage | AC, 60s | 3750 | - | - | Vrms | |
| VISO | Isolation voltage | AC, 1s in oil | - | 10000 | - | ||
| VISO | Isolation voltage | DC, 60s in oil | - | 10000 | - | ||
| Switching Characteristics | |||||||
| tr | Rise Time | VCC= 10V, IC= 2mA, RL= 100 | - | 5 | - | s | |
| tf | Fall Time | - | 9 | - | |||
| ton | Turn-on time | - | 9 | - | |||
| toff | Turn-off time | - | 9 | - | |||
| ton | Turn-on time | VCC= 5V, IF= 16mA, RL= 1.9k | - | 2 | - | ||
| ts | Storage time | - | 30 | - | |||
| toff | Turn-off time | - | 70 | - | |||
Ordering Information
Model Format: CT181X(V)(Y)
- CT: Denotes CT Micro
- 181: Part Number
- X: CTR Rank (GB or GR)
- V: VDE Safety Option (V or none)
- Y: Tape and reel option (T1 or T2)
Options:
- T1: Surface Mount Lead Forming With Option 1 Tapping (3000 Units/Reel)
- T2: Surface Mount Lead Forming With Option 2 Tapping (3000 Units/Reel)
Example Part Number: CT181X VYWWK
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