Toshiba Electronic Devices & Storage Corporation Electronic Parts
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The Toshiba TLP785F is a single-channel photocoupler that pairs an infrared emitting diode (IRED) with a silicon phototransistor inside a four-lead plastic DIP (DIP4) package. The “F” variant is the lead-formed, 10.16 mm pitch type engineered for long creepage-distance surface mounting, making it well suited to safety-critical isolation barriers in mains-connected equipment. It carries a minimum isolation voltage of 5000 Vrms and multiple international safety approvals.
This page covers the TLP785F ordering option carrying the VDE Option(D4) designation and the GRH current-transfer-ratio rank (CTR 150-300%). The base orderable device is the TLP785F; the trailing characters in the original listing (D4 / GRH / F) denote the VDE option, CTR rank marking, and tape/packing code.
The TLP785F with the D4-GRH ordering option sees little to no authorized-distributor stock, making it a genuine hard-to-find part. Pacific Component Xchange specializes in sourcing obsolete, allocated, and low-availability power-management ICs and optocouplers like this one. We support traceability and authenticity verification on every line, offer global shipping, and respond quickly to quote requests. Request a quote (RFQ) today and our sourcing team will locate authentic TLP785F stock to your quantity and lead-time requirements.
The base orderable device is Toshiba TLP785F. The trailing characters decode as ordering options: D4 is the VDE Option(D4) designation, GRH is the current-transfer-ratio rank (CTR 150-300%, marked G+), and the remaining characters are tape/packing code fragments. The garbled, unbalanced parentheses in the original listing are packaging-code artifacts, not part of the device name.
Both are the same single-channel transistor-output photocoupler. The standard TLP785 is a 7.62 mm pitch DIP4. The TLP785F is the lead-formed 10.16 mm pitch version with longer creepage and clearance (8.0 mm min each), intended for surface mounting where greater isolation spacing is required.
GRH is a current transfer ratio (CTR) classification. Per the Toshiba datasheet, Rank GRH specifies CTR of 150% to 300% (at IF = 5 mA, VCE = 5 V) and is marked G+ on the device.
The TLP785F is rated for a minimum isolation voltage (BVs) of 5000 Vrms, tested at AC for 60 seconds with relative humidity 60% or less.
Yes, Toshiba lists the TLP785F as an active product. However, the specific D4-GRH ordering option has little or no authorized-distributor availability, which is why it is offered as a request-for-quote item at Pacific Component Xchange.
Submit a request for quote (RFQ) to Pacific Component Xchange. As an independent distributor specializing in hard-to-find optocouplers and power-management ICs, we source authentic stock to your required quantity and lead time, with traceability and global shipping.
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