KP5010
High-gain Darlington output photocoupler with 2500V isolation, 100-300% CTR, and DIP-6 package for high-sensitivity a..
Product Overview
Description
The KP5010 features a Darlington transistor output configuration providing high current gain (CTR 100-300%).
Requires lower input current than standard transistor types, making it ideal for low-drive applications.
Suitable for interfacing with microcontrollers and other low-current drive sources.
Product Series
KP
Primary Application
Microcontroller isolation
Key Features
- High CTR 100-300%
- Low input current requirement
- 2500V isolation
- High current gain
- Suitable for MCU interfacing
- RoHS compliant
Specifications
| Output Type | Darlington |
|---|---|
| Isolation Voltage | 2500Vrms |
| CTR | 100-300% (at If=5mA, Vce=5V) |
| Forward Voltage | 1.2V typical |
| Forward Current | 60mA max |
| Collector-Emitter Voltage | 35V |
| Package | DIP-6 |
| Operating Temperature | -40°C to +85°C |
Applications
Microcontroller isolation
Industrial automation and control
Low-drive applications
Motor drive and control systems
Sensor interfacing
Sensor signal conditioning
Logic level shifting
Electronic system design
Battery-powered devices
Battery and charging management
FAE Expert Insights
"When customers need higher current gain without adding an external transistor, the KP5010's Darlington output is the perfect solution. The CTR of 100-300% means you can drive significant loads directly from a microcontroller pin. I've successfully used this in relay drive circuits and small motor controls. The trade-off is slightly slower switching speed compared to standard transistor output, but for most switching applications under 10kHz, it's not an issue. One design tip: the Darlington configuration has higher saturation voltage (about 1V), so account for that in your load calculations. Excellent for driving 12V relays directly."
High-gain Darlington output for low-drive current applications
— Senior FAE Team, BeiLuo
Frequently Asked Questions
What are the advantages of Darlington output?
Darlington output provides much higher current gain (CTR 100-300%) compared to standard transistor output (50-600%). This means you can achieve higher output current with lower input current, making it ideal for battery-powered devices and microcontroller interfacing. The trade-off is slower switching speed.
Use Darlington for high gain, standard for speed.
What is the maximum switching frequency of KP5010?
The KP5010 has a typical switching time of 2-4μs, allowing switching frequencies up to 50-100kHz depending on load conditions. For higher frequency applications, consider high-speed types like KPC series.
Suitable for general switching up to 50kHz.
Can KP5010 be used with 3.3V logic?
Yes, KP5010 can be used with 3.3V logic. Ensure proper current limiting resistor calculation: R = (3.3V - 1.2V) / If. For 10mA LED current, use approximately 200Ω resistor. Verify output current meets your load requirements based on CTR.
Use appropriate current limiting resistor for 3.3V operation.
What is the isolation resistance of KP5010?
The KP5010 provides typical isolation resistance of 10^12 ohms minimum. This high isolation resistance ensures excellent DC isolation between input and output circuits, critical for safety and noise immunity.
High isolation resistance ensures excellent DC isolation.
How do I protect KP5010 from ESD?
While KP5010 has internal ESD protection, for harsh environments: (1) Use proper grounding techniques; (2) Add external TVS diodes for additional protection; (3) Handle with ESD precautions during assembly; (4) Maintain proper PCB layout with adequate spacing.
Use standard ESD precautions during handling and assembly.