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TLP521-4 The Toshiba TLP521-4 is a photocoupler consisting of an infrared emitting diode and a photo-transistor. It offers a collector-emitter voltage of 55V.
Mfr Part #:

TLP521-4

Available from 1 distributors
Mfr Name: Toshiba
Toshiba
The Toshiba TLP521-4 is a photocoupler consisting of an infrared emitting diode and a photo-transistor. It offers a collector-emitter voltage of 55V.
✓ Total Stock: 7 pcs
$ Price Range: $0.33

TLP521-4 Available from 1 distributor

✓ Authorised
✓ Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
MW.FEP S.p.A. ✓
Non-Authorised Inventory information
7 pcs
On Request
7 pcs On Request 1 On Request On Request On Request On Request On Request
DistyParts aggregates offers from multiple distributors. Final prices, lead times and terms are subject to the distributors' discretion and may change without prior notice. DistyParts is not liable for any discrepancies.

TLP521-4 Specifications Quick View

Most important parameters for selection – full specs in datasheet.
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TLP521-4 Description

Short technical summary and product information.

The TOSHIBA TLP521-4 is a photocoupler that integrates an infrared emitting diode (IRED) optically coupled to a photo-transistor. This component is designed for applications such as programmable controllers, AC/DC input modules, and solid-state relays.

 

The TLP521-4 features a minimum collector-emitter voltage of 55 V and a minimum current transfer ratio of 50%. It provides an isolation voltage of 2500 Vrms. The device operates within a temperature range of -55°C to 100°C.

 

This photocoupler is available in a 16-lead plastic DIP package, suitable for through-hole mounting. The TLP521-4 is UL-recognized and cUL-recognized, ensuring compliance with safety standards.

 

Key electrical characteristics include a maximum forward current of 50 mA and a maximum collector current of 50 mA. The device also has a maximum junction temperature of 125°C.

TLP521-4 Quick Information

Product Type: Photocoupler
Canonical Name: TLP521-4 Photocoupler
Subcategory: Transistor Output

TLP521-4 Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected

TLP521-4 Estimated Pricing

Qty Low High
1+ $0.33 $0.33

Estimated market price range - modelled values for guidance only, not live distributor offers.

TLP521-4 Features

  • Four isolated channels in one package.
  • 55 V minimum collector-emitter voltage.
  • 50% minimum current transfer ratio.
  • 2500 Vrms isolation voltage.
  • 16-lead plastic DIP package.

TLP521-4 Applications

  • Used for signal isolation in industrial equipment.
  • Ideal for eliminating ground loops in data lines.
  • Suitable for PLC and motor control interfaces.
  • Provides noise isolation in power supply feedback.

TLP521-4 FAQs

6 frequently asked questions generated from this part’s specifications.
What is the operating temperature range of the TLP521-4?

-55°C to 100°C.

What package type is the TLP521-4 available in?

16-DIP (0.300", Single In Line) through-hole package.

What is the isolation voltage rating of the TLP521-4?

Minimum 2500 Vrms (AC, 60 s, RH ≤ 60%).

What is the maximum forward current for the TLP521-4?

50 mA at Ta = 25°C.

What is the current transfer ratio (CTR) of the TLP521-4?

Minimum 50% at IF = 5 mA, VCE = 5 V. Rank GB offers 100% minimum.

How many channels does the TLP521-4 have?

4 independent channels.

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