Toshiba Semiconductor and Storage TLP3147(TP,F

Overview

TLP3147(TP,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. It delivers 2.5 A max ON-state current, 100 mΩ max ON-resistance, and 60 V min OFF-state voltage in a compact 4-pin SOP package (2.54 mm pitch, 2.1 mm height), enabling solid-state replacement of mechanical relays in power line switching for ATE and factory automation systems.

For engineers reviewing the TLP3147(TP,F) datasheet, TLP3147(TP,F) pinout, TLP3147(TP,F) application, or TLP3147(TP,F) equivalent, key selection criteria include verified isolation voltage (1500 Vrms), low trigger LED current (≤3 mA), thermal derating behavior, and dual-drain output configuration confirmed in Toshiba Rev.3.0.A documentation.

Technical Context

The TLP3147(TP,F) implements galvanic isolation via monolithic optical coupling between GaAs LED and silicon MOSFET die. Its internal structure treats Pins 1–2 as a single anode–cathode pair and Pins 3–4 as paralleled drain terminals - a two-terminal device topology confirmed in Absolute Maximum Ratings Note 1 and Pin Assignment section.

It operates with input forward current up to 30 mA and supports DC supply voltages from 5 V to 48 V. Switching performance is characterized at 20 V load with 200 Ω resistive load: typical turn-on time is 0.35 ms and turn-off time is 0.25 ms, with guaranteed max values of 2.0 ms and 0.5 ms respectively.

Key Specifications

Pinout & Package

Package: SOP-4 (Toshiba designation 11-5H1S), 2.54 mm lead pitch, 2.1 mm height, 0.1 g typical weight. Surface-mount compatible with standard reflow profiles per J-STD-020.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLP3146(TP,F) and PS8701-F3-AX, the TLP3147(TP,F) uniquely supports 2.5 A continuous current with dual-drain terminals and ≤3 mA LED trigger - making it the only option among the three qualified for high-reliability, high-current industrial relay replacement where thermal and layout constraints are critical.

Availability

TLP3147(TP,F) is available at Aetrix Electronics and suitable for automatic test equipment (ATE), factory automation (FA), and industrial I/O interface boards requiring stable component supply and long-term production continuity.

Supply support for TLP3147(TP,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 discrete semiconductors, power devices, and optoelectronics with emphasis on reliability, safety certification, and industrial-grade robustness.

The TLP3147(TP,F) belongs to Toshiba's photorelay product line, engineered specifically for solid-state replacement of mechanical relays in harsh industrial environments where long service life, zero contact bounce, and high isolation integrity are mandatory.

FAQ

What is the maximum continuous ON-state current rating for the TLP3147(TP,F)?

The TLP3147(TP,F) has a maximum continuous ON-state current rating of 2.5 A at Ta = 25 °C, derating linearly to zero at 110 °C per the ∆I_ON/∆T_a specification of −25.0 mA/°C. This rating applies with both Drain pins (3 and 4) used in parallel, as confirmed in the Absolute Maximum Ratings table and Pin Assignment note stating Pins 3 and 4 are shorted together. Thermal design must account for 100 mΩ max R_ON dissipation.

Does the TLP3147(TP,F) support direct drive from a 3.3 V microcontroller GPIO?

Yes, the TLP3147(TP,F) supports direct drive from a 3.3 V microcontroller GPIO when paired with an appropriate series current-limiting resistor. With a maximum trigger LED current of 3 mA and typical forward voltage of 1.65 V at 10 mA, a 470 Ω resistor yields ~4.3 mA at 3.3 V - within safe operating limits. The TLP3147(TP,F) datasheet confirms this drive condition satisfies I_FT ≤ 3 mA across temperature.

What is the isolation voltage rating and safety certification status of the TLP3147(TP,F)?

The TLP3147(TP,F) is rated for 1500 Vrms isolation (AC, 60 s, R.H. ≤ 60 %) and carries UL recognition under UL 1577 (File No. E67349) and cUL recognition under CSA Component Acceptance Service No.5A (File No. E67349). These certifications are explicitly listed in Section 3 of the Toshiba datasheet Rev.3.0.A and apply to the TLP3147(TP,F) in its standard 11-5H1S package.

How are Pins 3 and 4 configured in the TLP3147(TP,F) internal structure?

Pins 3 and 4 of the TLP3147(TP,F) are internally shorted drain terminals of the output MOSFET, forming a single two-terminal output path as stated in Note 1 of the Absolute Maximum Ratings and Pin Assignment sections. This dual-pin configuration allows higher current handling and improved PCB thermal spreading - not independent outputs. Routing both pins to the same net is required for full 2.5 A rating.

What is the typical turn-on and turn-off time for the TLP3147(TP,F) under standard test conditions?

Under standard test conditions (R_L = 200 Ω, V_DD = 20 V, I_F = 5 mA), the TLP3147(TP,F) exhibits a typical turn-on time (t_ON) of 0.35 ms and typical turn-off time (t_OFF) of 0.25 ms, with maximum guaranteed values of 2.0 ms and 0.5 ms respectively. These values are measured using the test circuit shown in Figure 11.1 of the Toshiba datasheet Rev.3.0.A and reflect actual switching performance in resistive load applications.