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Toshiba Semiconductor TLP185(GR,SE — Optoisolators

TLP185(GR,SE Photocoupler, 3750Vrms, 100-300% CTR, 6-SOP

MPNTLP185(GR,SE
End of Life

Toshiba TLP185(GR,SE DC-input transistor-output photocoupler, 1 channel, 3750Vrms isolation, 100-300% CTR at 5mA, 80V output, 6-SOP package, Tube, -55°C to 110°C, ROHS3.

$0.59Ref. price · indicative, final on quote
Toshiba Semiconductor TLP185(GR,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(GR,SE specifications
ParameterValue
Input typeDC
Output typeTransistor
MountingSurface Mount
Voltage - isolation3750Vrms
Voltage - output80V
Voltage - forward (Vf)1.25V
Current - output (Channel)50mA
Current transfer ratio300% @ 5mA
Current - DC forward (If)50 mA
Operating temperature-55°C ~ 110°C
PackageTube
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

The Toshiba TLP185(GR,SE is a single-channel DC-input transistor-output photocoupler in a 6-SOP surface-mount package. The output transistor is rated for up to 80 V and 50 mA continuous, with a typical Vce saturation of 300 mV.

The GR rank specifies a CTR of 100% to 300% at 5 mA forward current. This is a tighter and higher minimum than the GB rank (which starts at a lower percentage), so the GR variant guarantees a stronger output drive for a given input current. If your design relies on a minimum CTR of 100% to ensure the output saturates cleanly over temperature and LED aging, the GR rank is the correct choice. The GB rank may work in less demanding loops, but the GR gives more headroom.

Frequently asked questions

What is the current transfer ratio (CTR) of TLP185(GR,SE?

The CTR is 100% minimum and 300% maximum, measured at a forward current of 5 mA. This is the GR rank.

Is TLP185(GR,SE a direct replacement for TLP185(GB,SE?

Both are DC-input transistor-output photocouplers in the same 6-SOP package with identical isolation, voltage, and speed ratings. The difference is the CTR rank: GR guarantees 100% minimum at 5 mA, while GB has a lower minimum. The GR can replace the GB in most circuits, but check if your design depends on the specific CTR bin.