TLP9121A – Optocoupler – Toshiba

The TLP9121A is a Toshiba photocoupler (optocoupler) from the IPM (Intelligent Power Module) interface family, used as an isolated signal interface in power and motor-drive systems. This part is obsolete and is available for RFQ at Pacific Component Xchange.

The TLP9121A is a photocoupler (optocoupler) manufactured by Toshiba Electronic Devices & Storage Corporation. It belongs to Toshiba’s Photocouplers for IPM (Intelligent Power Module) Interface family, a line of optically isolated devices designed to provide a safe, noise-immune signal interface between low-voltage control logic and intelligent power modules in inverter, servo, and motor-drive applications.

According to distributor records, the TLP9121A is obsolete and no longer manufactured, which makes it a hard-to-find part with little or no authorized-distributor stock. Pacific Component Xchange offers it on a Request-For-Quote basis.

Key Features

• Toshiba photocoupler (optocoupler) for Intelligent Power Module (IPM) interface applications
• Optically isolated input-to-output signal transfer for control-side / power-side separation
• Part of Toshiba’s IPM-interface photocoupler family, which (per family documentation) supports 5 V and 15 V supply rails
• Family output options include open-collector and totem-pole (inverter-logic and buffer-logic) stages selectable to match the IPM input circuit (family-level specification)
• Surface-mount photocoupler suited to industrial power and motor-drive boards

Note: The bullet points above reflect Toshiba’s IPM-interface photocoupler family documentation, not values confirmed from a part-specific TLP9121A datasheet. Confirm exact electrical ratings (supply voltage, output type, isolation voltage, propagation delay, CMR) and the exact package code for the TLP9121A ordering code against the official Toshiba datasheet before designing in.

Applications

• Intelligent Power Module (IPM) gate/control signal interface
• Industrial inverters and variable-frequency drives
• AC servo drives and motor control
• Air-conditioning and white-goods power control
• Photovoltaic inverters and general isolated industrial signaling

Why Source TLP9121A from Pacific Component Xchange

The TLP9121A is an obsolete, specialized Toshiba photocoupler with limited or no authorized-distributor availability. Pacific Component Xchange is an independent distributor focused on hard-to-find and obsolete power-management ICs and optocouplers. We source scarce and end-of-life Toshiba parts through a vetted global supply network, with authenticity verification and worldwide shipping. If you need TLP9121A for production, maintenance, or last-time buys, submit an RFQ to Pacific Component Xchange and our team will respond with current availability, lead time, and pricing.