Toshiba Semiconductor and Storage TLP3482(TP,E

Overview

TLP3482(TP,E from Toshiba Electronic Devices & Storage Corporation is a halogen-free photorelay with normally-open (1-Form-A) configuration, 100 V OFF-state voltage rating, 2 A maximum ON-state current, and 200 mΩ max ON-resistance in a P-SON4 (11-4Q1) package - designed for high-speed switching in automatic test equipment and memory testers.

For engineers reviewing the TLP3482(TP,E datasheet, TLP3482(TP,E pinout, TLP3482(TP,E application, or TLP3482(TP,E equivalent, this page delivers verified specifications, validated pin roles, real-world use cases in ATE and instrumentation, and two confirmed alternative photorelays with documented electrical and functional distinctions.

Technical Context

The TLP3482(TP,E integrates an infrared LED optically coupled to a photo-MOSFET output stage, enabling galvanic isolation without mechanical contacts. Its internal structure treats Pins 1–2 as a single anode–cathode pair and Pins 3–4 as a common drain output terminal - confirming its two-terminal operational model.

It operates with ≤3 mA trigger LED current and supports 20 V supply voltage at up to 2 A continuous load, delivering sub-3 ms turn-on/turn-off times under defined test conditions (IF = 5 mA, VDD = 20 V, RL = 200 Ω). Isolation is rated at 500 Vrms with <1 pF input-to-output capacitance.

Key Specifications

Pinout & Package

Packaged in Toshiba's P-SON4 (11-4Q1) outline - a 4-pin, 2.0 × 1.25 mm surface-mount package with exposed thermal pad (not electrically connected), 20 mg typical weight, and RoHS-compliant halogen-free resin encapsulation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLP3480(TP,E and PS8701-F3-AX, the TLP3482(TP,E uniquely balances 2 A current handling, 200 mΩ low RON, and P-SON4 compactness - making it the only option among the three qualified for high-density, high-current ATE channel cards operating at ≥100 MHz test speeds.

Availability

TLP3482(TP,E is available at Aetrix Electronics and suitable for automatic test equipment, parametric measuring instruments, and high-speed memory testers requiring stable component supply, long-term lifecycle support, and RoHS-compliant halogen-free packaging.

Supply support for TLP3482(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 designs and manufactures high-reliability semiconductor components, with core expertise in optoelectronics, power devices, and logic ICs for industrial and test equipment markets.

The TLP3482(TP,E belongs to Toshiba's photorelay product line engineered specifically for high-speed, high-cycle-count switching in automated test systems - emphasizing low RON, fast timing, and robust isolation in miniature surface-mount packages.

FAQ

What is the maximum continuous current rating for the TLP3482(TP,E?

The TLP3482(TP,E has a maximum continuous ON-state current rating of 2 A at Ta ≤ 25 °C, derating linearly to 0 A at 110 °C ambient per the datasheet's ∆ION/∆Ta = −20 mA/°C specification. This rating assumes proper PCB copper area for thermal dissipation and applies only when VOFF ≤ 80 V. The TLP3482(TP,E must not be operated beyond these limits to maintain reliability.

Does the TLP3482(TP,E support DC or AC load switching?

The TLP3482(TP,E supports DC load switching only - its photo-MOSFET output is unidirectional and rated for 100 V DC OFF-state voltage. It is not rated for AC mains or bidirectional current flow. For AC switching, a back-to-back MOSFET configuration (e.g., using two TLP3482(TP,E units) would be required, though not recommended without external protection circuitry. The TLP3482(TP,E is specified and tested exclusively for DC operation.

What is the meaning of "(TP,E" in the TLP3482(TP,E part number?

The suffix "(TP,E" denotes tape-and-reel packaging (TP) and RoHS-compliant, halogen-free resin (E) per Toshiba's ordering convention. "TP" indicates 1500 pcs per reel in embossed carrier tape; "E" confirms compliance with EU RoHS Directive 2011/65/EU and halogen-free material declaration per JEDEC J-STD-020. This exact variant - TLP3482(TP,E - is the standard production version shipped by Toshiba and stocked by Aetrix Electronics.

Can the TLP3482(TP,E replace mechanical relays in high-cycle applications?

Yes - the TLP3482(TP,E replaces electromechanical relays in high-cycle applications such as ATE channel switching, offering >10⁹ operations versus ~10⁵–10⁶ for mechanical types. Its solid-state construction eliminates contact wear, bounce, and arcing. However, unlike mechanical relays, the TLP3482(TP,E exhibits leakage current (<1 nA) and finite ON-resistance (≤200 mΩ), which must be accounted for in precision analog paths. The TLP3482(TP,E is not a drop-in replacement without circuit review.

What is the thermal resistance junction-to-ambient (RθJA) for the TLP3482(TP,E?

The datasheet does not specify RθJA directly, but thermal performance is characterized via derating curves: ON-state current drops linearly from 2 A at 25 °C to 0 A at 110 °C ambient, implying an effective RθJA ≈ 42.5 °C/W based on Pd = I²R = (2 A)² × 0.2 Ω = 0.8 W max dissipation. Actual RθJA depends heavily on PCB copper area - Toshiba recommends ≥100 mm² of 2-oz copper connected to Pins 3/4 for optimal thermal performance. This value is derived from the TLP3482(TP,E's published derating behavior and cannot be assumed without layout verification.