Toshiba Semiconductor and Storage TLX9150M(TPL,F

Overview

TLX9150M from Toshiba Electronic Devices & Storage Corporation is a high-voltage photorelay combining an infrared LED and photo-MOSFET in a SO12L-T package. It delivers 900 V peak off-state voltage, ≤3 mA trigger LED current, and ≤250 Ω on-state resistance (t < 1 s), enabling solid-state switching in automotive battery control circuits.

For engineers reviewing the TLX9150M datasheet, TLX9150M pinout, TLX9150M application, or TLX9150M equivalent, this device supports AEC-Q101-qualified, high-isolation (5000 Vrms), normally open switching for EV and fuel cell systems where galvanic separation and high-voltage DC load control are critical.

Technical Context

The TLX9150M implements optical coupling between GaAs-based infrared LED input and silicon photo-MOSFET output, eliminating electrical continuity while supporting up to 720 V supply voltage. Its dual-drain MOSFET structure enables bidirectional blocking and low leakage (≤100 nA at 900 V, 25°C).

Designed for automotive-grade reliability, it features CTI > 600 resin, 8 mm creepage/clearance, and thermal derating down to 10 mA on-state current at 125°C. Switching times are ≤1 ms turn-on/turn-off under RL = 20 kΩ, VDD = 40 V conditions.

Key Specifications

Pinout & Package

TLX9150M uses the SO12L-T package (Toshiba designation: 11-8C1A), a surface-mount, 12-pin gull-wing package with 0.31 g typical weight and 8 mm minimum creepage/clearance distances.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLP3554A(TP,E and PS8501-AX, the TLX9150M uniquely combines AEC-Q101 qualification, 900 V blocking, 5000 Vrms isolation, and 8 mm creepage-making it the only option validated for functional safety-critical EV battery isolation where regulatory compliance and long-term reliability are mandatory.

Availability

TLX9150M is available at Aetrix Electronics and suitable for automotive battery management, fuel cell control, and electric vehicle powertrain applications requiring stable component supply, long-lifecycle support, and AEC-Q101-compliant sourcing.

Supply support for TLX9150M 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 semiconductor components focused on power efficiency, reliability, and automotive-grade performance.

The TLX9150M belongs to Toshiba's photorelay product line engineered specifically for high-voltage, high-isolation DC switching in electric vehicles and energy storage systems where contactor replacement and functional safety are key design goals.

FAQ

What is the maximum continuous on-state current rating for TLX9150M at 125°C?

The TLX9150M supports 10 mA maximum continuous on-state current at 125°C, as specified in the Absolute Maximum Ratings table. This derating reflects thermal limitations of the internal photo-MOSFET die and package. At lower temperatures (e.g., 25°C), the rating increases to 50 mA. Designers must apply appropriate thermal margin and verify junction temperature using the given derating slope (−0.5 mA/°C above 45°C) to ensure reliable operation of the TLX9150M.

Does TLX9150M support bidirectional current flow in the output channel?

Yes, the TLX9150M supports bidirectional current flow due to its symmetrical high-voltage MOSFET output structure with pins 7 and 12 both connected to the drain node. This enables use in AC-coupled or polarity-agnostic DC switching applications such as battery pack isolation where current direction may reverse during regenerative braking or cell balancing. The device maintains 900 V off-state voltage and ≤100 nA leakage in either direction when deactivated.

Can TLX9150M be driven directly by a 3.3 V microcontroller GPIO without external circuitry?

Yes, TLX9150M can be driven directly by a 3.3 V microcontroller GPIO when paired with a properly sized series current-limiting resistor. With a typical forward voltage of 1.65 V at 10 mA and maximum trigger current of 3 mA, a 470 Ω resistor ensures safe operation within recommended IF (5–20 mA). This eliminates need for buffer transistors or dedicated LED drivers, simplifying control interface design for the TLX9150M.

What is the meaning of "SO12L-T" package designation for TLX9150M?

SO12L-T is Toshiba's internal package code for a 12-pin small-outline integrated circuit with gull-wing leads, thermally enhanced construction, and tape-and-reel packaging. It corresponds to JEDEC-standard SOIC-12 but includes extended creepage (8 mm) and reinforced insulation features required for automotive high-voltage applications. The "L" denotes leaded, "T" indicates tape-and-reel delivery format - critical for automated SMT placement of the TLX9150M.

How does TLX9150M meet AEC-Q101 requirements for automotive use?

The TLX9150M undergoes full AEC-Q101 stress testing including temperature cycling (−40°C to +125°C), unbiased high-humidity bias, ESD (HBM ≥ 2 kV), and mechanical shock. Its construction uses CTI > 600 resin, 0.4 mm minimum insulation thickness, and 8 mm creepage/clearance - all verified per AEC-Q200 and IEC 60664-1. These qualifications confirm suitability for under-hood and battery-pack environments where the TLX9150M operates reliably across its full −40°C to +125°C range.