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TLP627-2

Dual Darlington photocoupler, 1000% CTR, 300V, 5kVrms, DIP-8

6200

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Manufacturer Part：

TLP627-2

Package：

DIP-8 (9.40 x 6.50 x 3.90 mm)

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Description

Product Overview

The TLP627-2 from Toshiba is a dual-channel Darlington phototransistor photocoupler with 1000% minimum CTR, 5000Vrms isolation, and 300V collector-emitter voltage in a 8-pin DIP package.

Key Specifications

Channels 2 (Dual)
Isolation Voltage 5000 Vrms
CTR (min) 1000% @ IF=1mA
Collector-Emitter Voltage 300 V
Collector Current 100 mA
LED Forward Voltage 1.3V typical @ IF=10mA
Response Time 100 us typical (rise/fall)
Operating Temperature -55°C to +100°C
Package DIP-8

Features

  • Dual Darlington photocoupler with 1000% CTR for very low LED drive
  • 300V collector-emitter and 5000Vrms isolation in DIP-8

Applications

  • Industrial PLC output and appliance control with low LED drive current

The TLP627-2 from Toshiba is a dual-channel Darlington phototransistor photocoupler providing 1000% minimum current transfer ratio at IF=1mA. The Darlington output stage (two cascaded phototransistors) provides the very high CTR needed for applications where the LED drive current is limited, such as microcontroller I/O port direct drive without additional transistor buffering. The 300V collector-emitter voltage rating is suitable for driving triac gates, relay coils, and small solenoids directly from AC line-derived or industrial 24V DC supplies. The dual-channel configuration provides two independent optocouplers in a single 8-pin DIP package, saving board space compared to two single-channel devices. The 5000Vrms isolation voltage meets UL 1577 safety requirements for industrial and appliance applications.

The TLP627-2 operates as a dual Darlington phototransistor photocoupler. (1) Darlington Output: Each channel consists of an infrared LED optically coupled to a Darlington-connected phototransistor pair. The first phototransistor detects the LED light and its collector current drives the base of the second (output) transistor. The total current gain is the product of the individual gains, resulting in CTR values of 1000% or more. (2) High CTR: At IF=1mA, the Darlington output can sink 10mA or more (1000% CTR minimum). This means that a microcontroller I/O pin directly driving the LED at 1-5mA can control loads requiring up to 50-100mA at the output. (3) Speed Trade-off: The Darlington connection introduces an additional pole in the frequency response, limiting the switching speed to approximately 100us. This is acceptable for relay and triac drive applications but not for high-speed digital signal isolation. (4) Saturation Voltage: The Darlington output has a higher saturation voltage (approximately 1.0-1.2V) compared to a single phototransistor (0.1-0.3V) due to the VCE(sat) of the first transistor plus the VBE of the second.

Pin Name Function
1 Anode 1 Channel 1 LED anode
2 Cathode 1 Channel 1 LED cathode
3 NC No connect
4 Emitter 1 Channel 1 Darlington emitter
5 Collector 1 Channel 1 Darlington collector
6 NC No connect
7 Emitter 2 Channel 2 Darlington emitter
8 Collector 2 Channel 2 Darlington collector
  • Industrial PLC output with 1000% CTR for direct MCU LED drive
Manufacturer Part Number Package Notes
Toshiba TLP627-4 DIP-16 Quad version
Vishay ILD615-3 DIP-8 Dual Darlington, similar
onsemi MOC8050 DIP-6 Single, 500% CTR
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2. Strict Full-batch Quality Inspection

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Contact Information

Email: info@materialparts.com

Tel / WhatsApp: +86 13760382860

Service & Packaging

Materialparts is a professional electronic component supplier based in Shenzhen, China, with over 20 years of global trading experience. We integrate component procurement, quality inspection, technical support, customized packaging, and global delivery services to provide one-stop supply chain solutions. Our business covers industrial control, automotive electronics, consumer electronics, medical devices and other industries. We always adhere to genuine sources, stable supply and considerate after-sales service.

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2. Genuine Product Guarantee & Full-process Quality Inspection

All products are sourced from official authorized channels and are 100% original genuine parts. Every batch of goods undergoes strict full-process quality inspection before delivery, with complete batch records and traceability documents provided. Our products comply with AEC-Q standards for automotive electronics and high-reliability specifications for medical devices. We eliminate counterfeits, refurbished parts and defective products from the source to secure your project production.

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Contact Information

For service consultation or packaging customization, please feel free to contact us:
Email: info@materialparts.com
Tel / WhatsApp: +86 13760382860
Address: Room 2919, Guoli Building, Huaqiang North, Futian District, Shenzhen, Guangdong, China
 

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