Toshiba Semiconductor and Storage TLP592A(F)

Overview

TLP592A(F) from Toshiba Electronic Devices & Storage Corporation is a normally open (1-form-A) photocoupler photorelay integrating an infrared LED optically coupled to a photo-MOSFET in a 6-pin DIP package. It delivers 500 mA max on-state current, 2 Ω max on-resistance, and 60 V min off-state voltage-enabling solid-state AC/DC load switching in telecom interface protection and industrial data acquisition systems.

For engineers reviewing the TLP592A(F) datasheet, TLP592A(F) pinout, TLP592A(F) application, or TLP592A(F) equivalent, key selection criteria include verified isolation voltage (2500 Vrms), trigger LED current ≤3 mA, temperature-rated operation (−40°C to +85°C), and A/B/C connection topology for flexible load routing in measurement equipment and control logic interfaces.

Technical Context

The TLP592A(F) uses optical coupling between GaAs-based IR LED and silicon photo-MOSFET to achieve galvanic isolation without magnetic components. Its output stage supports three configurable terminal connections (A, B, C) with distinct current ratings: 500 mA (A/B), 1000 mA (C), and corresponding on-resistance curves down to 0.25 Ω (C).

Switching performance is defined by turn-on time ≤2 ms and turn-off time ≤0.5 ms at VDD = 20 V and RL = 200 Ω. Input-to-output capacitance is tightly controlled at 0.8 pF typical, supporting low-noise signal integrity in high-impedance measurement front-ends and isolated analog monitoring paths.

Key Specifications

Pinout & Package

Package: 6-pin DIP (JEDEC MS-001 variant), TOSHIBA designation 11-7A8S, weight 0.4 g (typ.).

Key Features

Applications

Equivalent & Alternatives

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

Compared with VO615A and G3VM-61VY, the TLP592A(F) offers the lowest trigger LED current (≤3 mA) among the three, reducing MCU GPIO loading, while delivering balanced performance in on-state current (500 mA), R_ON (2 Ω), and certified 2500 Vrms isolation for cost-sensitive industrial control designs.

Availability

TLP592A(F) is available at Aetrix Electronics and suitable for telecommunications interface protection, data acquisition system channel isolation, and programmable logic controller output stages requiring stable component supply and long-term industrial lifecycle support.

Supply support for TLP592A(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 and manufactures high-reliability semiconductor components, with global leadership in optoelectronics, power devices, and memory solutions.

The TLP592A(F) belongs to Toshiba's Photocoupler Photorelay product line, engineered specifically for solid-state replacement of mechanical relays in industrial control, test instrumentation, and telecom infrastructure where low-power drive, long service life, and safety-certified isolation are critical.

FAQ

What is the maximum allowable forward current for the LED in TLP592A(F)?

The absolute maximum forward current for the TLP592A(F) LED is 50 mA at Ta = 25°C, derating linearly by −0.5 mA/°C above that temperature. For reliable long-term operation, Toshiba recommends limiting continuous forward current to 25 mA under typical conditions, as specified in the Recommended Operating Conditions table. The TLP592A(F) achieves full turn-on with only 3 mA maximum trigger current, making it highly efficient for microcontroller-driven applications.

Does TLP592A(F) support AC load switching?

Yes, the TLP592A(F) supports both AC and DC load switching in its A and B connection configurations, with a peak off-state voltage rating of 60 V (min). Its photo-MOSFET output structure provides bidirectional blocking capability, enabling use in zero-crossing–free AC control circuits such as lamp dimmers and heater controllers. The TLP592A(F) datasheet confirms this functionality in the "Circuit Connections" section for A-connection mode.

What is the isolation voltage rating of TLP592A(F), and is it certified?

The TLP592A(F) has a minimum isolation voltage rating of 2500 Vrms (AC, 60 s), and it is UL-recognized under UL 1557 with File No. E67349. This certification validates its suitability for reinforced insulation in end equipment complying with IEC 61010-1 and IEC 60950-1 standards. The TLP592A(F) achieves this via internal molding compound and precise leadframe spacing in its 6-pin DIP package.

How does the C-connection configuration differ from A- and B-connections in TLP592A(F)?

The C-connection in the TLP592A(F) configures Pins 4 and 6 as parallel drains with Pin 5 as the common source, enabling 1000 mA max on-state current and 0.25 Ω typical on-resistance-double the current and half the R_ON of the A-connection. This topology is intended for high-current DC loads where thermal management permits higher power dissipation. The TLP592A(F) datasheet explicitly defines these three configurations in the "Circuit Connections" and "Electrical Characteristics" sections.

What is the operating temperature range for TLP592A(F), and how does performance change across it?

The TLP592A(F) is rated for operation from −40°C to +85°C. Within this range, on-state current derates linearly at −5.0 mA/°C for A/B connections, and on-resistance increases with temperature-reaching up to 2 Ω (max) at +85°C. Trigger LED current also rises slightly with ambient temperature, remaining ≤3 mA up to +65°C per recommended conditions. These dependencies are fully characterized in the TLP592A(F) datasheet's graphs on pages 4–5.