Toshiba Electronic Devices & Storage Corporation Electronic Parts
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The TLP385(D4BLL-TR,E) from Toshiba is a high-isolation transistor-output photocoupler (optocoupler) consisting of a gallium-arsenide infrared emitting diode optically coupled to a silicon NPN phototransistor. It is housed in a compact, low-profile 4-pin SO6L surface-mount package, which is significantly thinner than a conventional DIP package and well suited to high-density board layouts. The “D4” designation identifies the SO6L (VDE-approved option) package, “BLL” identifies the current-transfer-ratio (CTR) rank, and the “-TR,E” suffix denotes embossed tape-and-reel packaging.
The TLP385(D4BLL-TR,E) is a specific CTR-ranked, tape-and-reel variant that frequently shows little or no stock through authorized distribution channels. Pacific Component Xchange specializes in sourcing hard-to-find and allocated optocouplers and power-management ICs for engineering and procurement teams worldwide. We focus on authenticity, traceability, and reliable global shipping so you can secure the exact rank and packaging code you need.
Because this is a Request-for-Quote item, pricing and lead time are confirmed per order based on current availability. Submit an RFQ today and our sourcing specialists will respond with verified stock, pricing, and delivery options for the TLP385(D4BLL-TR,E).
The full Toshiba orderable code is TLP385(D4BLL-TR,E). 'D4' designates the SO6L package, 'BLL' is the current-transfer-ratio rank, and '-TR,E' indicates embossed tape-and-reel packaging.
It is a single-channel transistor-output photocoupler (optocoupler) that provides galvanic isolation between an input IR LED and an output phototransistor, transferring signals while blocking high voltage between input and output.
The TLP385 is a high-isolation type rated for 5000 Vrms (minimum) isolation voltage between input and output, per the Toshiba datasheet.
It uses a thin 4-pin SO6L surface-mount package, which is lower-profile than a standard DIP and suited to high-density SMT assembly.
Yes. This is a Request-for-Quote item available through Pacific Component Xchange. Submit an RFQ and our team will confirm verified stock, pricing, and lead time.
Toshiba grades photocouplers by current transfer ratio (CTR). Per the TLP385 datasheet CTR rank table, the 'BLL' rank specifies a CTR of 200% (min) to 400% (max) at IF = 5 mA, VCE = 5 V, while the device-wide guaranteed minimum CTR is 50%.
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