REEL|Transistor Output Optocouplers 80Vceo 2500Vrms 4 channels, Obsolete

TLP281-4 – 4-Channel Transistor Output Optocoupler 80Vceo 2500Vrms – Toshiba

This Toshiba TLP281-4 transistor output optocoupler provides reliable electrical isolation and signal transmission in multi-channel applications. Designed for critical circuit protection, it features high isolation voltage and compact packaging – ideal for space-constrained designs requiring robust noise immunity. PCX ensures genuine Toshiba components with same-day shipping and dedicated technical support.

Key Features

• 4-channel isolation for simultaneous signal control
• 80V collector-emitter voltage (Vceo)
• 2500Vrms high isolation voltage between input/output
• Transistor output configuration
• Compact DIP package

Technical Details

This obsolete optocoupler features four independent channels with gallium arsenide infrared LEDs paired with phototransistor detectors. The 2500Vrms isolation rating ensures safe signal transfer across voltage domains while preventing ground loop interference. Designed for industrial temperature ranges, it maintains stable performance in demanding environments. Download datasheet (Note: Product images are representational).

Typical Applications

• Industrial PLC I/O isolation
• Power supply feedback circuits
• Medical equipment signal isolation
• Motor drive control systems
• Communication interface protection

About Toshiba America Electronic Components

Toshiba is a global semiconductor leader with decades of innovation in optoelectronics and power management solutions. Their components are renowned for meeting stringent industrial reliability standards through advanced manufacturing processes and rigorous quality control.

As pioneers in optocoupler technology, Toshiba designs deliver consistent performance in safety-critical applications. Their engineering expertise ensures optimal noise immunity and longevity, making Toshiba optocouplers the preferred choice for automotive, industrial, and medical systems worldwide.

About Transistor Output Optocouplers

Optocouplers (or optoisolators) prevent high-voltage transients and electrical noise from damaging sensitive circuitry by using light to transmit signals across an isolation barrier. This galvanic separation is essential for safety compliance and signal integrity in power electronics.

Transistor output variants like the TLP281-4 provide cost-effective isolation for DC and low-frequency applications. With simpler circuitry than triac or IC-based optocouplers, they offer reliable switching for industrial controls, power management, and digital interface protection without complex drive requirements.

Packaging Information

Available in Tape & Reel (TR) packaging for automated assembly. Note: This is an obsolete part – limited stock available exclusively through PCX while supplies last.

Frequently Asked Questions

Q: Is this a drop-in replacement for other 4-channel optocouplers?
A: While pin-compatible with many industry standards, always verify electrical characteristics against your design requirements using the datasheet.

Q: What’s the maximum switching speed?
A: Typical transistor output optocouplers support DC to 20kHz operation – confirm actual specs in the linked Toshiba datasheet.

Q: Can I use this for AC line monitoring?
A: Yes, the 2500Vrms isolation rating makes it suitable for low-power AC sensing applications when properly implemented.

Q: Why choose obsolete components?
A: Obsolete parts maintain legacy systems when redesigns aren’t feasible. PCX specializes in sourcing such components.

Q: Does PCX provide technical support for obsolete items?
A: Yes, our engineers assist with datasheet interpretation, cross-references, and application guidance.

Q: How does transistor output differ from triac output?
A: Transistor outputs switch DC/low-frequency signals, while triac outputs control AC loads. Transistor versions typically offer faster response times.

Secure remaining stock! Order TLP281-4 optocouplers today for same-day shipping and guaranteed authenticity.