High Current Photorelays in DIP4 Package

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High Current Photorelays in DIP4 Package

Features low ON-state resistance and high ON-state current ratings for easier use

 

Toshiba introduced two new high current photorelays, fabricated using the latest U-MOS IX semiconductor process. The new “TLP3553A” and “TLP3555A” devices has OFF-state output terminal voltage ratings of 30V and 60V, and ON-state continuous current ratings of 4A and 3A—higher than previous generation products. The TLP3553A has a low ON-state-resistance of just 50mΩ (max) which is less than a typical mechanical relay (about 100mΩ), ensuring that operating losses are kept to a minimum.

 

With high ON-state current ratings, the new products can replace 1-Form-A mechanical relays that are commonly used in industrial applications. Replacing mechanical relays with photorelays can improve system reliability and reduces the space required for relays and relay drivers. The photorelays are rated for operation at temperature between -40 ºC and 110ºC, making it easy to achieve a thermal margin in designs.

 

The photorelays are intended be used in a variety of applications such as industrial equipment (PLC, I/O interface, etc.); heating, ventilation and air conditioning (HVAC); building automation systems, security equipment, and replacement of mechanical relays in legacy systems.

 

Features

  • Featuring ON-state current ratings close to those of mechanical relays by using MOSFETs fabricated in the latest generation U-MOS IX process
  • A variety of OFF-state output terminal voltage ratings: VOFF=30V/60V
  • High operating temperature ratings: Topr (max)=110°C

 

Main Specifications (@Ta=25℃)

Part number

TLP3553A

TLP3555A

Contact

1-Form-A

Generation of MOSFET

U-MOS Ⅸ

Package

DIP4

Absolute maximum ratings

Operating temperature Topr  ()

-40 to 110

OFF-state output terminal voltage VOFF  (V)

30

60

ON-state current ION  (A)

4

3

ON-state current (pulsed) IONP  (A)

9

9

Electrical characteristics

Trigger LED current IFT max  (mA)

3

ON-state resistance RON typ.  (mΩ)

25

45

ON-state resistance RON max  (mΩ)

50

100

Isolation voltage BVS min  (kVrms)

2.5

Turn-on time tON max  (ms)

3

2

Turn-off time tOFF max  (ms)

1

1

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