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Toshiba Semiconductor TLP185(BLL-TR,SE — Optoisolators

TLP185(BLL-TR,SE Photocoupler, 3750Vrms, 4-pin SO-6

MPNTLP185(BLL-TR,SE
End of Life

Toshiba TLP185(BLL-TR,SE single-channel DC-input transistor-output photocoupler, 3750Vrms isolation, 200-400% CTR @ 5mA, 80V/50mA output, 2µs/3µs rise/fall, -55°C to 110°C, 6-SOIC 4-lead package, Tape & Reel.

$0.59Ref. price · indicative, final on quote
Toshiba Semiconductor TLP185(BLL-TR,SE datasheet (PDF)
Packaging6-SOIC (0.173", 4.40mm Width), 4 Leads
RoHSROHS3 Compliant
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

TLP185(BLL-TR,SE specifications
ParameterValue
Input typeDC
Output typeTransistor
MountingSurface Mount
Voltage - isolation3750Vrms
Voltage - output80V
Voltage - forward (Vf)1.25V
Current - output (Channel)50mA
Current transfer ratio400% @ 5mA
Current - DC forward (If)50 mA
Operating temperature-55°C ~ 110°C
PackageTape & Reel (TR); Cut Tape (CT)
Case6-SOIC (0.173\", 4.40mm Width), 4 Leads
Channels1
Vce saturation300mV
Rise (Fall time)2µs, 3µs
Turn on (Turn off time)3µs, 3µs

Product details

Single-channel photocoupler for isolated signal paths

The Toshiba TLP185(BLL-TR,SE is a single-channel photocoupler with a DC input LED and a phototransistor output, housed in a 6-SOIC surface-mount package with 4 leads. Key features include a current transfer ratio (CTR) range of 200% to 400% at 5mA forward current, a maximum output voltage of 80V, and a continuous output current of 50mA per channel.

3750Vrms isolation and temperature range — fit for harsh environments

Rated for 3750Vrms isolation, this photocoupler meets basic insulation requirements for many industrial and consumer applications where safety isolation between low-voltage control and higher-voltage power circuits is needed.

Switching speed and drive margins

The 200% to 400% CTR range at 5mA forward current provides good margin for LED drive current selection and accounts for CTR degradation over life; a 5mA forward current yields a guaranteed minimum output drive of 10mA (200% of 5mA). Vce saturation is 300mV max, keeping power dissipation low in the output transistor.

The tape-and-reel (TR) and cut-tape (CT) packaging options suit both high-volume pick-and-place and prototype builds.

Frequently asked questions

Is TLP185(BLL-TR,SE RoHS compliant?

Yes, the TLP185(BLL-TR,SE is ROHS3 compliant, meeting the latest EU RoHS directive requirements.

What is the closest functional second-source for TLP185(BLL-TR,SE?

The TLP185(YH-TPL,SE and TLP185(GRH-TL,SE are functionally identical single-channel DC-input transistor-output photocouplers in the same 6-SOIC package with the same isolation, CTR range, and switching speeds. The difference is in the CTR binning suffix — the (BLL) variant guarantees 200-400% CTR, while (YH) and (GRH) cover different CTR ranges. For a drop-in replacement check the CTR requirements of your design.