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TLP185(GB-TPL,SE(T

Photocoupler, 3750Vrms isolation, CTR 50-300%, 1Mbps, MFSOP-4, industrial isolation

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Manufacturer Part：

TLP185(GB-TPL,SE(T

Package：

MFSOP-4 (4.40 x 2.30 x 1.80 mm)

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Description

Product Overview

The TLP185(GB-TPL,SE(T from Toshiba is a 3750Vrms photocoupler in a MFSOP-4 package. With a CTR of 50-300% and 110°C max operating temperature, it provides safe electrical isolation for industrial control and communication interfaces.

Key Specifications

Isolation Voltage 3750 Vrms
CTR (Current Transfer Ratio) 50% to 300%
Forward Current 50 mA (max)
CTR Rank (GB) 100% to 300%
Bandwidth 1 Mbps (typical)
Operating Temperature -55C to +110C

Features

  • 3750Vrms isolation voltage for safe control-to-load separation
  • 50-300% CTR for reliable signal transfer
  • MFSOP-4 compact surface-mount package
  • 1Mbps data rate for communication isolation
  • Wide -55C to +110C operating temperature range
  • UL 1577 and VDE safety approvals

Applications

  • Industrial control system signal isolation
  • Communication interface isolation (RS-232, RS-485)
  • Power supply feedback loop isolation
  • Motor drive logic isolation

The TLP185(GB-TPL,SE(T from Toshiba is a high-isolation photocoupler consisting of a GaAlAs infrared LED optically coupled to a photo-transistor detector in a MFSOP-4 surface-mount package. The device provides 3750Vrms electrical isolation between input and output, ensuring safe signal transfer between high-voltage and low-voltage circuits. The GB CTR rank provides 100% to 300% current transfer ratio for reliable signal amplification. The MFSOP-4 (Miniature Flat Small Outline Package) offers a compact footprint with reduced creepage and clearance compared to DIP packages. The device supports data rates up to 1Mbps for communication interface isolation. UL 1577 and VDE 0884 safety approvals ensure compliance with regulatory requirements. The -55C to +110C operating temperature range supports industrial and automotive applications.

The TLP185 uses optical coupling between an LED and a photo-transistor. (1) LED Input: When forward current flows through the infrared LED (pins 1-2), it emits infrared radiation proportional to the current. The LED forward voltage is typically 1.2V at 10mA. (2) Optical Coupling: The infrared light crosses an optically transparent but electrically insulating dielectric within the package, providing 3750Vrms isolation. (3) Photo-Transistor Output: The photo-transistor (pins 3-4) detects the infrared radiation and generates a collector current proportional to the LED forward current. The ratio of output current to input current is the Current Transfer Ratio (CTR), which is 100-300% for the GB rank. (4) Signal Transfer: Digital signals are transferred by switching the LED current on and off. The photo-transistor saturates when the LED is on and turns off when the LED is off. The 1Mbps data rate is limited by the photo-transistor switching speed.

Pin Name Type Function
1 Anode Input LED anode
2 Cathode Input LED cathode
3 Emitter Output Photo-transistor emitter
4 Collector Output Photo-transistor collector
  • Industrial control system signal isolation with 3750Vrms rating
  • Communication interface isolation (RS-232, RS-485) at 1Mbps
  • Power supply feedback loop isolation with GB CTR rank
  • Motor drive logic isolation in MFSOP-4 compact package
Manufacturer Part Number Package Notes
Toshiba TLP181GB MFSOP-4 Similar, different CTR rank
Vishay SFH618A-3 DIP-4 Through-hole, similar CTR
Everlight EL817S1(B)(TU)-F SOP-4 Direct alternative
onsemi FOD817C SOP-4 Similar CTR rank
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Quality Assurance

Quality is the core foundation of our long-term global cooperation. With over 20 years of experience in the electronic component industry, Materialparts has built a strict and standardized quality management system covering component sourcing, incoming inspection, full-batch testing, packaging and delivery. We are committed to delivering 100% genuine, high-reliability electronic components for industrial control, automotive electronics, consumer electronics and medical device industries, and fully safeguarding your production and R&D projects.

1. Authorized & Genuine Sourcing Promise

All of our electronic components are procured from official authorized distributors and original manufacturers. We strictly reject counterfeits, refurbished parts, disassembled components and gray-market goods. Every product is guaranteed to be brand-new original parts and fully consistent with the original technical parameters. For branded products such as NXP IC series, we maintain complete supply channel documents to realize full product traceability.

2. Strict Full-batch Quality Inspection

We implement 100% full-batch quality control for all goods before shipment. Our professional QC team conducts multi-dimensional tests including appearance inspection, electrical parameter testing, performance verification and packaging check. Each batch of components is attached with complete inspection reports and batch records. We stick to zero-tolerance standards for defective products to ensure every piece of component meets industrial application requirements.

3. Industry Standard Compliance

Our products comply with a variety of international industry quality standards to adapt to high-standard application scenarios:
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4. Professional Reliability Control

For static-sensitive, moisture-sensitive and precision components such as ICs, PCBs, sensors and connectors, we carry out reliability screening in advance. Combined with standardized ESD anti-static packaging and vacuum moisture-proof packaging, we avoid component damage caused by static electricity, dampness or collision during storage and transportation, and retain the original performance of products.

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If any product is confirmed to have non-conformity quality problems due to our reasons after receipt, we provide free return, exchange and supplementary delivery services. Our professional quality team will also conduct root cause analysis to optimize our quality control process. We respond to quality feedback within 24 hours to resolve your worries efficiently.

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Email: info@materialparts.com
Tel / WhatsApp: +86 13760382860
Address: Room 2919, Guoli Building, Huaqiang North, Futian District, Shenzhen, Guangdong, China

 

Shipping & Payment

Materialparts is a professional global supplier of electronic components with over 20 years of industry experience. We provide one-stop supply of passive components, integrated circuits, as well as parts for industrial control, automotive electronics, consumer electronics and medical devices. Below are the unified shipping and payment policies applicable to all orders, samples and bulk purchases worldwide.

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Contact Information

Email: info@materialparts.com

Tel / WhatsApp: +86 13760382860

Service & Packaging

Materialparts is a professional electronic component supplier based in Shenzhen, China, with over 20 years of global trading experience. We integrate component procurement, quality inspection, technical support, customized packaging, and global delivery services to provide one-stop supply chain solutions. Our business covers industrial control, automotive electronics, consumer electronics, medical devices and other industries. We always adhere to genuine sources, stable supply and considerate after-sales service.

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We specialize in a full range of passive and active electronic components, including SMD resistors, power resistors, connectors, aviation connectors, LED beads, flexible circuit boards, printed circuit boards, and integrated circuits. Our professional team provides BOM list consolidation, component matching, and alternative model recommendation services. We support sample orders, small-batch trial production, and mass production orders with flexible MOQs to meet diverse procurement needs.

2. Genuine Product Guarantee & Full-process Quality Inspection

All products are sourced from official authorized channels and are 100% original genuine parts. Every batch of goods undergoes strict full-process quality inspection before delivery, with complete batch records and traceability documents provided. Our products comply with AEC-Q standards for automotive electronics and high-reliability specifications for medical devices. We eliminate counterfeits, refurbished parts and defective products from the source to secure your project production.

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Our customer service team responds promptly to inquiries and quotation requests. All in-stock orders will be processed within one working day. We provide stocking reservation services for long-term cooperative customers, effectively solving problems such as component shortages and unstable supply chains.

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We cooperate with mainstream international logistics providers including DHL, FedEx, UPS and TNT to achieve fast global delivery. We can provide complete export documents such as customs declaration files, commercial invoices and packing lists to ensure smooth customs clearance for international shipments. Local pickup is also available for customers in Shenzhen, China.

Professional Packaging Standards

Electronic components are sensitive to static electricity, collision, moisture and dust. We adopt industry-standard anti-static packaging solutions to fully ensure the integrity of goods during transportation and storage.

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We provide value-added services including personalized packaging, custom labeling and re-reeling according to customer requirements, fully matching your production and warehouse management standards.

Contact Information

For service consultation or packaging customization, please feel free to contact us:
Email: info@materialparts.com
Tel / WhatsApp: +86 13760382860
Address: Room 2919, Guoli Building, Huaqiang North, Futian District, Shenzhen, Guangdong, China
 

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