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TLP293-4(GB-TP,E(T

4-CH Photocoupler, 3750Vrms, CTR 100-600% GB, SO-16

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Manufacturer Part：

TLP293-4(GB-TP,E(T

Package：

SO-16 (10.3 x 7.0 x 2.1 mm)

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Description

Product Overview

The TLP293-4(GB-TP,E(T from Toshiba is a 4-channel photocoupler with 3750Vrms isolation, GB-rank CTR (100-600%), and SO-16 surface mount package.

Key Specifications

Type Quad Channel Photocoupler
Channels 4 (independent LED + phototransistor pairs)
Isolation Voltage 3750 Vrms (min, 1 minute)
CTR (GB rank) 100% ~ 600% @ IF=5mA, VCE=5V
VCEO 80 V
Forward Current (IF) 50 mA (max)
Forward Voltage (VF) 1.25 V (typical) @ IF=10mA
Propagation Delay 1.0 us (max)
Cree page/Creepage 5.0 mm / 5.0 mm (min)
Package SO-16 (10.3 x 7.0 x 2.1 mm)
Operating Temperature -55C to +125C

Features

  • 4 independent optocoupler channels in one package
  • 3750Vrms high isolation voltage
  • GB rank CTR: 100-600% at IF=5mA
  • 5mm creepage/clearance for reinforced isolation
  • Safety approvals: UL1577, VDE, CQC
  • (GB-TP,E(T suffix: Toshiba ordering code (GB=CTR rank, TP=tape reel, E=environmental)

Applications

  • Industrial I/O isolation (4 channels)
  • Motor drive signal isolation
  • PLC digital input isolation
  • Inverter gate drive signal coupling

The TLP293-4(GB-TP,E(T from Toshiba is a 4-channel photocoupler containing four independent LED-phototransistor pairs in a single SO-16 surface mount package. The device provides 3750Vrms isolation between input and output, with 5mm minimum creepage and clearance distances for reinforced isolation in industrial applications. The GB rank CTR specification of 100-600% at IF=5mA provides a tighter lower bound than the blank rank (50-600%), making it suitable for applications requiring guaranteed current transfer at low LED drive currents. The 80V VCEO and 50mA collector current per channel support direct interface with 24V industrial logic. The (GB-TP,E(T suffix encodes Toshiba’s ordering code: GB=CTR rank, TP=tape and reel packaging, E=environmental compliance. This is a different ordering code variant of the same TLP293-4 device as the TLP293-4(4LGBTPE.

Each channel of the TLP293-4 consists of a GaAlAs LED optically coupled to a silicon phototransistor through a transparent isolation layer. When current flows through the LED (IF), infrared photons are emitted and travel across the isolation gap to illuminate the phototransistor base region. The absorbed photons generate base current in the phototransistor, which is amplified by the transistor’s hFE to produce the collector current (IC). The current transfer ratio (CTR = IC/IF) depends on LED efficiency, optical coupling, and phototransistor gain. The GB rank guarantees CTR of 100-600% at IF=5mA. The 3750Vrms isolation is achieved by maintaining a minimum 0.4mm internal isolation thickness between the LED and phototransistor dice, with the transparent coupling compound providing both optical coupling and electrical isolation. The propagation delay of up to 1.0us is limited by the phototransistor’s switching speed.

Pin Name Type Function
1 Anode 1 Input Channel 1 LED anode
2 Cathode 1 Input Channel 1 LED cathode
3 Anode 2 Input Channel 2 LED anode
4 Cathode 2 Input Channel 2 LED cathode
5 Anode 3 Input Channel 3 LED anode
6 Cathode 3 Input Channel 3 LED cathode
7 Anode 4 Input Channel 4 LED anode
8 Cathode 4 Input Channel 4 LED cathode
9 Emitter 4 Output Channel 4 phototransistor emitter
10 Collector 4 Output Channel 4 phototransistor collector
11 Emitter 3 Output Channel 3 phototransistor emitter
12 Collector 3 Output Channel 3 phototransistor collector
13 Emitter 2 Output Channel 2 phototransistor emitter
14 Collector 2 Output Channel 2 phototransistor collector
15 Emitter 1 Output Channel 1 phototransistor emitter
16 Collector 1 Output Channel 1 phototransistor collector
  • 4-channel PLC digital input isolation with 24V input to 3.3V MCU, GB rank CTR
  • Motor drive PWM signal isolation with 4 channels for half-bridge control
  • Industrial sensor interface with 3750Vrms reinforced isolation per IEC 61010
  • Inverter gate drive signal coupling with 5mm creepage for 300Vrms working voltage
Manufacturer Part Number Package Notes
Toshiba TLP293-4(4LGBTPE SO-16 Same device, different ordering code
Vishay VO4661-4 SO-16 4-channel optocoupler, alternative
onsemi H11AA4.1 SO-16 4-channel optocoupler, alternative
Toshiba TLP291-4 SO-16 4-channel, lower CTR rank
Renesas PS2914-4 SO-16 4-channel optocoupler, alternative
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