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Toshiba Semiconductor and Storage TLP170G(TP,F)
- Part No.:
- TLP170G(TP,F)
- Manufacturer:
- Toshiba Semiconductor and Storage
- Category:
- Solid State Relays (SSR)
- Package:
- 4-SMD, Gull Wing
- Datasheet:
-
TLP170G(TP,F).pdf
- Description:
- SSR RELAY SPST-NO 100MA 0-350V
- Quantity:
- Payment:
- Shipping:
Inventory:2,563
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Product details
Overview
TLP170G(TP,F) from Toshiba Electronic Devices & Storage Corporation is a normally-open photorelay IC comprising an infrared LED optically coupled to a photo-MOSFET in a 4-pin SOP package. It requires ≤1 mA LED trigger current, supports up to 100 mA continuous load current, and provides 350 V OFF-state voltage isolation - ideal for low-power mechanical relay replacement in industrial control interfaces.
For engineers reviewing the TLP170G(TP,F) datasheet, TLP170G(TP,F) pinout, TLP170G(TP,F) application, or TLP170G(TP,F) equivalent, key selection criteria include guaranteed 1 mA max trigger current, dual-drain output configuration, 1500 Vrms isolation rating, SOP-4 package compatibility, and UL/cUL safety certification for safety-critical signal switching.
Technical Context
The TLP170G(TP,F) implements optical isolation between input and output stages using gallium arsenide (GaAs) LED and silicon photo-MOSFET die. Its internal structure connects pins 1 and 2 as a single LED anode–cathode pair, while pins 3 and 4 are internally shorted as parallel drain terminals - enabling higher current handling without external paralleling.
It operates as a solid-state 1-Form-A switch with no moving parts, delivering 1.0–5.0 ms turn-on and 1.0–3.0 ms turn-off times at VDD = 20 V and RL = 200 Ω. The device meets UL 1577 and CSA Component Acceptance Service No.5A (File E67349), confirming compliance for reinforced insulation in Class I/II equipment.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Type | Normally open (1-Form-A), dual-drain MOSFET output |
| OFF-State Voltage | 350 V min - supports AC/DC loads up to 280 V supply |
| Trigger LED Current | ≤1 mA max - enables direct drive from low-power MCU GPIOs |
| Continuous Load Current | 80 mA max at Topr ≤ 65°C - derated linearly above 25°C |
| ON-State Resistance | 50 Ω max (continuous) - limits power dissipation to ≤300 mW |
| Isolation Voltage | 1500 Vrms (60 s) - certified for functional insulation per UL/cUL |
| Input–Output Capacitance | 0.8 pF typ - ensures minimal high-frequency coupling in noise-sensitive circuits |
Pinout & Package
Package: SOP-4 (2.54 mm pitch, 2.1 mm height, 0.1 g typical weight), JEDEC MS-012 compatible.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode | LED anode - connect to current-limited positive supply |
| 2 | Cathode | LED cathode - ground or logic-low control node |
| 3 | Drain | Output drain terminal - internally shorted to Pin 4 |
| 4 | Drain | Output drain terminal - parallel path to Pin 3 for current sharing |
Key Features
| Feature | Design Value |
|---|---|
| Low Trigger Threshold | ≤1 mA LED current enables direct interface with 3.3 V/5 V microcontrollers without buffer stages |
| Dual-Drain Output | Pins 3 and 4 shorted internally - increases current capacity and thermal margin vs. single-drain equivalents |
| High-Voltage Isolation | 1500 Vrms isolation supports use in mains-connected industrial I/O modules and PBX line cards |
| UL/cUL Safety Certification | Recognized under UL 1577 and CSA Component Acceptance Service No.5A - simplifies end-equipment safety approvals |
| Low Power Consumption | 1 mA trigger + <1 μA OFF-state leakage reduces standby power in battery-backed systems |
Applications
| Factory Automation I/O Modules | Security System Zone Inputs |
|---|---|
Use Scenario: Isolating 24 V DC sensor inputs from PLC backplane logic in harsh industrial environments. IC Role / Device Role / Timing Role: Solid-state input isolator replacing electromechanical relays for long-life, bounce-free signal conditioning. Use Value: Eliminates contact wear and EMI from coil switching; 350 V OFF-state rating handles induced transients on unshielded field wiring. |
Use Scenario: Monitoring door/window contact sensors in intrusion alarm panels with supervised loop detection. IC Role / Device Role / Timing Role: Low-leakage (≤1000 nA) isolated switch enabling reliable supervision current measurement across zones. Use Value: Sub-microamp OFF-state current ensures zone fault detection remains accurate over decades of operation. |
| Measuring Instrument Signal Switching | Private Branch Exchange (PBX) Line Interface |
Use Scenario: Multiplexing high-impedance analog signals (e.g., thermocouple inputs) in portable DMMs and data loggers. IC Role / Device Role / Timing Role: Low-capacitance (0.8 pF) photo-MOSFET switch minimizing signal loading and crosstalk between channels. Use Value: Preserves measurement accuracy by limiting charge injection and maintaining >100 GΩ isolation resistance at 500 V bias. |
Use Scenario: Isolating ring generator and line monitoring circuits in analog telephone interface cards. IC Role / Device Role / Timing Role: High-voltage photorelay handling 90 V RMS ringing signals and DC loop supervision voltages. Use Value: 350 V OFF-state rating and 1500 Vrms isolation meet GR-909 and Telcordia requirements for telecom line-side safety. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar photorelay applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLP170B(TP,F) | Same package and pinout; lower OFF-state voltage (250 V min) and higher RON (65 Ω max continuous) | Suitable only for ≤125 V AC/DC loads; not rated for PBX or 240 V industrial inputs | Select when cost sensitivity outweighs voltage margin and thermal performance |
| PS7141-AL-AX | SO-4 package, 400 V OFF-state rating, but requires 3 mA max IFT and has 1.5 ms slower tOFF | Better voltage headroom but higher drive requirement; less suitable for ultra-low-power MCU designs | Prefer where higher isolation voltage is critical and system can support 3 mA LED drive |
Compared with TLP170G(TP,F), the TLP170B(TP,F) trades voltage and RON performance for lower cost, while PS7141-AL-AX offers higher voltage tolerance at the expense of increased LED drive and slower turn-off - making TLP170G(TP,F) optimal for 24–280 V applications requiring minimal MCU current and fast response.
Availability
TLP170G(TP,F) is available at Aetrix Electronics and suitable for factory automation I/O modules, security system zone inputs, and measuring instrument signal switching requiring stable component supply and long-term lifecycle assurance.
Supply support for TLP170G(TP,F) includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Toshiba Electronic Devices & Storage Corporation designs and manufactures discrete semiconductors, power devices, and optoelectronics for industrial, automotive, and consumer applications.
The TLP170G(TP,F) belongs to Toshiba's photorelay product line, engineered specifically for low-power, high-isolation solid-state switching in space-constrained industrial control and telecom interfaces.
FAQ
What is the maximum continuous load current rating for TLP170G(TP,F) at 65°C ambient?
The TLP170G(TP,F) supports up to 80 mA continuous ON-state current at Topr = 65°C, per Recommended Operating Conditions. This derates linearly from 100 mA at 25°C (−1.0 mA/°C), ensuring safe operation within its 300 mW output power limit and 50 Ω max RON specification. Exceeding this current risks thermal runaway or accelerated degradation.
Does TLP170G(TP,F) support AC load switching, and what is its peak voltage capability?
Yes, TLP170G(TP,F) supports AC load switching with a minimum OFF-state output terminal voltage of 350 V, enabling reliable operation with 240 V RMS mains-derived signals. Its 1500 Vrms isolation rating and UL/cUL recognition confirm suitability for functional insulation in AC-coupled applications such as PBX line interfaces and AC sensor inputs.
How are pins 3 and 4 configured in TLP170G(TP,F), and why is this design used?
Pins 3 and 4 of the TLP170G(TP,F) are internally shorted as parallel drain terminals of the photo-MOSFET. This configuration doubles current-handling capacity and improves thermal distribution versus single-drain alternatives - directly supporting its 100 mA peak and 80 mA continuous ratings without external paralleling or heatsinking.
What safety certifications apply to TLP170G(TP,F), and what do they cover?
TLP170G(TP,F) is UL-recognized under UL 1577 (File E67349) and cUL-recognized under CSA Component Acceptance Service No.5A (File E67349). These certifications validate its 1500 Vrms isolation withstand voltage for 60 seconds and confirm compliance with reinforced insulation requirements for functional safety in Class I/II equipment.
Can TLP170G(TP,F) be driven directly from a 3.3 V microcontroller GPIO without a series resistor?
No - TLP170G(TP,F) requires current-limiting. With VF ≈ 1.15 V (typ.) at 10 mA, a 3.3 V GPIO needs a series resistor of ~2.2 kΩ to deliver ~1 mA (within IFT ≤1 mA max). Omitting the resistor risks exceeding IF = 50 mA absolute maximum, causing irreversible LED degradation or failure.
TLP170G(TP,F) Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Toshiba Semiconductor and Storage
- Series:
- TLP170G
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Last Time Buy
- Mounting Type:
- Surface Mount
- Circuit:
- SPST-NO (1 Form A)
- Output Type:
- AC, DC
- Voltage - Input:
- 1.15VDC
- Voltage - Load:
- 0 V ~ 350 V
- Load Current:
- 100 mA
- On-State Resistance (Max):
- 50 Ohms
- Termination Style:
- Gull Wing
- Operating Temperature:
- -55°C ~ 125°C
- Supplier Device Package:
- 4-SOP
- Approval Agency:
- VDE
- Grade:
- -
- Qualification:
- -
TLP170G(TP,F) FAQ
1.How can I place an order for TLP170G(TP,F) through Aetrix?
Please submit a Request for Quotation (RFQ) for TLP170G(TP,F) on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for TLP170G(TP,F) reliable?
The price and inventory of TLP170G(TP,F) are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLP170G(TP,F) is usually 5 days.
3.What payment methods are accepted for TLP170G(TP,F)?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLP170G(TP,F) transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLP170G(TP,F)?
TLP170G(TP,F) orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLP170G(TP,F) order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for TLP170G(TP,F)?
For technical support, including TLP170G(TP,F) datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLP170G(TP,F) requirements.
6.How does Aetrix verify that TLP170G(TP,F) is sourced from the original manufacturer or authorized distributors?
All TLP170G(TP,F) products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that TLP170G(TP,F) meets industry standards.
7.What is the process for return or replacement of TLP170G(TP,F)?
All TLP170G(TP,F) units undergo pre-shipment inspection (PSI). If there is an issue with TLP170G(TP,F), returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The TLP170G(TP,F) part is unused and in its original packaging.
Return procedure for TLP170G(TP,F):
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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