Toshiba Semiconductor and Storage TLP3484(TP,E

Overview

TLP3484(TP,E from Toshiba Electronic Devices & Storage Corporation is a halogen-free photorelay with normally-open (1-Form-A) configuration, 400 V OFF-state voltage rating, 0.18 A max ON-state current, and 18 Ω typical ON-resistance-designed for high-speed signal switching in automatic test equipment and logic IC testers.

For engineers reviewing the TLP3484(TP,E datasheet, TLP3484(TP,E pinout, TLP3484(TP,E application, or TLP3484(TP,E equivalent, key selection criteria include low 60 pF output capacitance for fast switching, 500 Vrms isolation, P-SON4 package compatibility with high-density PCB layouts, and ESD-sensitive handling requirements.

Technical Context

The TLP3484(TP,E integrates an infrared LED optically coupled to a photo MOSFET, forming a two-terminal device where Pins 1–2 are internally shorted (LED anode/cathode pair) and Pins 3–4 are shorted (MOSFET drain terminals). Its architecture enables galvanic isolation without external biasing of the detector side.

Switching performance is defined by 0.23 ms typical turn-on time and 0.06 ms typical turn-off time at IF = 5 mA and VDD = 20 V, supported by low 60 pF COFF and sub-3 mA trigger LED current-making it suitable for high-frequency AC/DC signal routing in automated test systems requiring minimal signal distortion.

Key Specifications

Pinout & Package

The TLP3484(TP,E is housed in a P-SON4 package (Toshiba designation 11-4Q1), measuring 2.5 × 2.5 mm with 0.5 mm pitch and an exposed thermal pad on the bottom. Pins 1–2 form the LED input pair; Pins 3–4 are internally shorted drain terminals of the photo MOSFET output stage.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLP3482(TP,E and PS8702-1-AX, the TLP3484(TP,E delivers superior high-speed performance (0.23 ms tON, 60 pF COFF) in the smallest footprint (P-SON4), making it optimal for space-constrained, high-frequency ATE designs where single-pole switching and 400 V isolation are mandatory.

Availability

TLP3484(TP,E is available at Aetrix Electronics and suitable for automatic test equipment, high-speed logic IC testers, and measuring instruments requiring stable component supply, long-term lifecycle support, and RoHS-compliant procurement.

Supply support for TLP3484(TP,E 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 is a Japanese semiconductor manufacturer specializing in power devices, logic ICs, and optoelectronics for industrial, automotive, and test equipment markets.

The TLP3484(TP,E belongs to Toshiba's photorelay product line, engineered specifically for high-speed, high-isolation signal switching in automated test systems where mechanical relay wear and electromagnetic interference must be eliminated.

FAQ

What is the maximum continuous ON-state current rating for the TLP3484(TP,E?

The TLP3484(TP,E has a maximum continuous ON-state current rating of 0.18 A at Ta = 25 °C. Derating applies above 25 °C at –1.8 mA/°C, limiting usable current to approximately 0.12 A at 85 °C ambient. This rating ensures stable conduction in ATE load switching without thermal runaway, provided PCB copper area and airflow meet Toshiba's recommended land pattern guidelines.

Does the TLP3484(TP,E require an external gate resistor or bias network?

No, the TLP3484(TP,E does not require external gate biasing or resistors on the output side because it is a self-contained photo MOSFET structure with integrated LED driver and detector. Only a series current-limiting resistor on the LED input (Pins 1–2) is needed-typically 220 Ω for 5 V drive at 3 mA IFT-to ensure reliable triggering without exceeding absolute maximum ratings.

What is the meaning of "(TP,E" in the full part number TLP3484(TP,E?

The suffix "(TP,E" in TLP3484(TP,E specifies tape-and-reel packaging (TP) and RoHS-compliant, halogen-free resin (E). TP indicates 1500-piece reels per JEDEC standard, while E confirms compliance with EU Directive 2011/65/EU and Toshiba's halogen-free material specification-critical for environmentally regulated production lines using the TLP3484(TP,E.

Can the TLP3484(TP,E be used in AC signal switching applications?

Yes, the TLP3484(TP,E supports AC signal switching due to its bidirectional output structure and 400 V peak OFF-state voltage rating. It can switch sine, square, or arbitrary waveforms up to 400 Vpk, provided RMS voltage remains within 500 Vrms isolation limits and frequency stays below the bandwidth limit imposed by 60 pF COFF and 0.23 ms tON-verified in Toshiba's Fig. 12.11 and switching time test circuit.

Is the P-SON4 package of the TLP3484(TP,E compatible with standard reflow soldering profiles?

Yes, the TLP3484(TP,E's P-SON4 package is qualified for lead-free reflow soldering per J-STD-020, with peak temperature up to 260 °C for ≤10 seconds. Toshiba specifies two reflow cycles maximum, with first reflow completed within 168 hours of moisture-proof bag opening. The 20 mg unit weight and exposed thermal pad require precise stencil design and nitrogen-assisted reflow to ensure void-free solder joints and thermal reliability.