General purpose DC input phototransistor optocoupler CT MICRO CT357B T1 with 4 pin mini flat package
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Product Description
Product Overview
The CT357 Series is a general-purpose, DC input phototransistor optocoupler featuring a 4-pin Mini-Flat package. It offers high isolation of 3750 VRMS and a wide operating temperature range of -55 C to 110 C. Available with multiple Current Transfer Ratio (CTR) selections, this optocoupler is suitable for applications such as DC-DC converters, programmable controllers, telecommunication equipment, and hybrid substrates requiring high-density mounting. The product is manufactured with a green package and holds various regulatory approvals including UL, VDE, CQC, and IEC standards.
Product Attributes
- Brand: CT Micro
- Series: CT357
- Package Type: 4-Pin Mini-Flat
- Input Type: DC Input
- Output Type: Phototransistor Output
- Color: Green Package
- Certifications: UL - UL1577 (E364000), VDE - EN60747-5-5(VDE0884-5), CQC GB4943.1, GB8898, IEC60065, IEC60950
Technical Specifications
| Parameter | Rating | Units | Notes |
|---|---|---|---|
| Absolute Maximum Ratings (at 25C) | |||
| Isolation Voltage (VISO) | 3750 | VRMS | |
| Operating Temperature (TOPR) | -55 ~ +110 | C | |
| Storage Temperature (TSTG) | -55 ~ +150 | C | |
| Soldering Temperature (TSOL) | 260 | C | |
| Total Power Dissipation (PTOT) | 200 | mW | |
| Emitter Characteristics | |||
| Forward Current (IF) | 50 | mA | |
| Peak Transient Current (IF(TRANS)) | 1 | A | 1s P.W, 300pps |
| Reverse Voltage (VR) | 6 | V | |
| Power Dissipation (PD) | 70 | mW | |
| Detector Characteristics | |||
| Power Dissipation (PC) | 150 | mW | |
| Collector-Emitter Breakdown Voltage (BVCEO) | 80 | V | |
| Emitter-Collector Breakdown Voltage (BVECO) | 6 | V | |
| Collector Current (IC) | 50 | mA | |
| Electrical Characteristics (TA = 25C unless otherwise specified) | |||
| Forward Voltage (VF) | 1.24 (Typ) | V | IF=10mA |
| Reverse Current (IR) | - (Max) 5 | A | VR = 6V |
| Input Capacitance (CIN) | - (Typ) 30 | pF | f=1MHz |
| Collector-Emitter Breakdown Voltage (BVCEO) | 80 | V | IC= 100A |
| Emitter-Collector Breakdown Voltage (BVECO) | 7 | V | IE= 1mA |
| Collector-Emitter Dark Current (ICEO) | - (Max) 100 | nA | VCE= 20V, IF=0mA |
| Transfer Characteristics | |||
| Current Transfer Ratio (CTR) CT357 | 50 (Min) - 600 (Max) | % | IF= 5mA, VCE= 5V |
| Current Transfer Ratio (CTR) CT357A | 80 (Min) - 160 (Max) | % | IF= 5mA, VCE= 5V |
| Current Transfer Ratio (CTR) CT357B | 130 (Min) - 260 (Max) | % | IF= 5mA, VCE= 5V |
| Current Transfer Ratio (CTR) CT357C | 200 (Min) - 400 (Max) | % | IF= 5mA, VCE= 5V |
| Current Transfer Ratio (CTR) CT357D | 300 (Min) - 600 (Max) | % | IF= 5mA, VCE= 5V |
| Collector-Emitter Saturation Voltage (VCE(SAT)) | - (Typ) 0.06 - (Max) 0.2 | V | IF= 20mA, IC= 1mA |
| Isolation Resistance (RIO) | 5x1010 | VIO= 500VDC | |
| Isolation Capacitance (CIO) | - (Typ) 0.5 - (Max) 1 | pF | f=1MHz |
| Switching Characteristics | |||
| Rise Time (tr) | - (Typ) 6 | s | IC= 2mA, VCE= 2V, RL= 100 |
| Fall Time (tf) | - (Typ) 8 | s | IC= 2mA, VCE= 2V, RL= 100 |
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Company
Beijing Silk Road Enterprise Management Services Co., Ltd.
Location
16 Floor, Unit B, Jiatai International Mansion, No 41, Dongsihuan Zhong Road, Chaoyang District, Beijing
Contact Person
Sellina