Toshiba Semiconductor and Storage TLP3825(TP5,F

Overview

TLP3825(TP5,F) from Toshiba Electronic Devices & Storage Corporation is a normally-open photorelay IC comprising an infrared LED optically coupled to a photo-MOSFET output stage in an 8-pin DIP through-hole package. It delivers 1.5 A max ON-state current, 500 mΩ max ON-resistance, and 200 V min OFF-state voltage - enabling solid-state replacement of mechanical relays in AC/DC power line switching up to 160 V.

For engineers reviewing the TLP3825(TP5,F) datasheet, TLP3825(TP5,F) pinout, TLP3825(TP5,F) application, or TLP3825(TP5,F) equivalent, key selection criteria include isolation voltage (2500 Vrms), trigger LED current (≤5.0 mA), switching speed (0.25 ms turn-on), creepage/clearance compliance for industrial safety, and A-connection configuration suitability for high-current load control.

Technical Context

The TLP3825(TP5,F) implements optical coupling between GaAs-based infrared LED input and dual-channel MOSFET output with internal source-drain paralleling (pins 5/8 = drain, 6/7 = source). Its A-connection topology supports single-pole, single-throw (1-Form-A) operation with bidirectional load current capability and zero-crossing–independent switching.

Designed for direct replacement of electromechanical relays, it features reinforced galvanic isolation per UL 1577 and CSA Component Acceptance, with total input-to-output capacitance ≤0.8 pF and isolation resistance ≥5×10¹⁰ Ω - ensuring noise immunity in noisy factory automation environments and stable timing in PLC I/O modules.

Key Specifications

Pinout & Package

Package: 8-pin DIP (dual in-line package), through-hole mounting, pitch 7.62 mm (TLP3825 variant), RoHS-compliant, weight 0.53 g (typ.).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar photorelay applications.

Compared with PVG612A and PS8501-AL, the TLP3825(TP5,F) uniquely balances through-hole manufacturability, 1.5 A current handling, sub-millisecond switching, and 2500 Vrms safety certification - making it the most widely adopted DIP photorelay for cost-sensitive, high-reliability FA and PLC designs.

Availability

TLP3825(TP5,F) is available at Aetrix Electronics and suitable for factory automation, programmable logic controller outputs, and automatic test equipment requiring stable component supply across long production lifecycles.

Supply support for TLP3825(TP5,F) includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Toshiba Electronic Devices & Storage Corporation designs high-reliability semiconductor components for industrial, automotive, and consumer applications, with core expertise in power devices, logic ICs, and optoelectronics.

The TLP3825(TP5,F) belongs to Toshiba's photorelay product line engineered specifically for mechanical relay replacement in industrial control systems - emphasizing low drive current, high isolation, and long-term reliability under continuous switching stress.

FAQ

What is the maximum continuous load current supported by the TLP3825(TP5,F)?

The TLP3825(TP5,F) supports a maximum continuous ON-state current of 1.5 A in A-connection configuration at 25 °C ambient temperature. Derating applies above 25 °C (−15 mA/°C), and the device must be mounted on a PCB with adequate copper area to dissipate up to 0.75 W at full load. This rating is validated per Toshiba's Absolute Maximum Ratings table and enables direct control of industrial solenoids and heating elements without external current boosting.

Does the TLP3825(TP5,F) require a zero-crossing detection circuit?

No, the TLP3825(TP5,F) does not incorporate zero-crossing detection and operates independently of AC phase angle. It switches instantly upon LED activation, allowing precise timing control for non-sinusoidal or DC loads. This design eliminates synchronization complexity in applications like pulse-width modulated heater control or DC motor direction reversal, where phase-locked switching is unnecessary or undesirable.

What safety certifications apply to the TLP3825(TP5,F)?

The TLP3825(TP5,F) is UL-recognized under File No. E67349 (UL 1577) and cUL-recognized per CSA Component Acceptance Service No. 5A File No. E67349. These certifications confirm compliance with reinforced insulation requirements, including 2500 Vrms isolation voltage and ≥7.0 mm creepage/clearance distances. Certification documentation is maintained by Toshiba and available upon request for end-equipment safety audits.

Can the TLP3825(TP5,F) switch AC and DC loads interchangeably?

Yes, the TLP3825(TP5,F) is bidirectional and capable of switching both AC and DC loads. Its photo-MOSFET output has no polarity dependence, supporting load currents flowing from drain to source or source to drain. The 200 V minimum OFF-state voltage rating applies to both polarities, making it suitable for 120/240 VAC mains switching and up to ±200 VDC applications such as battery management and telecom power control.

What is the recommended LED drive circuit for reliable operation of the TLP3825(TP5,F)?

A series current-limiting resistor is required between the driving source (e.g., MCU GPIO) and the TLP3825(TP5,F) LED anode (pin 2). For 5 V logic, a 680 Ω resistor ensures ≤5.0 mA forward current at 25 °C; for 3.3 V logic, use 470 Ω. The resistor value must account for worst-case V_F (1.8 V max) and ambient temperature derating. No external transistor driver is needed due to the low 5 mA trigger threshold.