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Toshiba Semiconductor and Storage TLP3545A(TP1,F
- Part No.:
- TLP3545A(TP1,F
- Manufacturer:
- Toshiba Semiconductor and Storage
- Category:
- Solid State Relays (SSR)
- Package:
- 6-SMD (0.300", 7.62mm)
- Datasheet:
-
TLP3545A(TP1,F.pdf
- Description:
- SSR RELAY SPST-NO 4A 0-60V
- Quantity:
- Payment:
- Shipping:
Inventory:2,798
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Product details
Overview
TLP3545A(TP1,F) from Toshiba Electronic Devices & Storage Corporation is a normally-open photorelay IC combining an infrared LED and photo MOSFET in a 6-pin DIP package. It delivers 4 A max ON-state current, 60 mΩ max ON-resistance, and 60 V min OFF-state voltage - enabling solid-state replacement of mechanical relays in AC/DC power line switching applications such as HVAC control and factory automation.
For engineers reviewing the TLP3545A(TP1,F) datasheet, TLP3545A(TP1,F) pinout, TLP3545A(TP1,F) application, or TLP3545A(TP1,F) equivalent, key selection criteria include isolation voltage (2500 Vrms), trigger LED current (≤3 mA), thermal derating behavior, and UL/VDE safety certifications for industrial control systems.
Technical Context
The TLP3545A(TP1,F) implements optical coupling between a GaAs infrared LED and a dual-drain photo MOSFET output stage. Its internal two-terminal configuration shorts pins 1–3 (input side) and pins 4–6 (output side), supporting A-connection topology with source-common drain outputs.
It operates across –40 °C to +85 °C ambient, supports 5–48 V supply voltage, and features fast switching (typ. 1.2 ms turn-on, 0.1 ms turn-off at 20 V/5 mA). Safety compliance includes UL 1577, UL 508, and EN 60747-5-5 (when specified with D4 option).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| ON-state current (A) | 4 A max - supports direct switching of resistive loads up to 96 W at 24 V DC without external heatsinking |
| ON-state resistance | 60 mΩ max - limits conduction loss to ≤384 mW at 4 A, reducing thermal stress in compact PCB layouts |
| Trigger LED current | 3 mA max - enables low-power microcontroller GPIO drive without buffer transistors |
| Isolation voltage | 2500 Vrms min - meets reinforced insulation requirements for Class I equipment in industrial mains interfaces |
| OFF-state voltage | 60 V min - suitable for 24–48 V DC control circuits and SELV-compliant AC line sensing |
| Turn-on time | 5 ms max - ensures deterministic timing in PLC output modules and safety-rated interlock circuits |
| Storage temperature | –55 °C to +125 °C - allows long-term warehouse storage without parametric drift or solderability degradation |
Pinout & Package
Package: 6-pin DIP (TOSHIBA 11-7A8S), through-hole mount, 7.62 mm lead pitch, creepage ≥7.0 mm, clearance ≥7.0 mm, internal isolation thickness ≥0.4 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode | LED anode input - connects to MCU GPIO or driver circuit with current-limiting resistor |
| 2 | Cathode | LED cathode return - ties to ground or low-side switch node |
| 3 | N.C. | No internal connection - electrically isolated; must remain unconnected per datasheet |
| 4 | Drain | Output drain terminal 1 - forms one side of A-connection output path with pin 6 |
| 5 | Source | Output source terminal - common reference for both output drains (pins 4 & 6) |
| 6 | Drain | Output drain terminal 2 - paralleled with pin 4 in A-connection for higher current handling |
Key Features
| Feature | Design Value |
|---|---|
| UL & VDE certified isolation | Meets UL 1577, UL 508, and EN 60747-5-5 (with D4 option) - eliminates need for additional safety certification in end equipment |
| Low ON-resistance | 60 mΩ max at 3 A - reduces I²R heating, enabling use in space-constrained industrial controllers without forced air cooling |
| High surge current tolerance | 12 A pulsed (100 µs, 10% duty) - withstands inrush currents from solenoids, contactors, and capacitive loads |
| Lead-free & RoHS compliant | Meets EU RoHS Directive - supports environmentally regulated industrial and building automation deployments |
| Controlled soldering profile | Rated for 260 °C peak (10 s) - compatible with standard wave-solder processes without lead damage or delamination |
Applications
| HVAC Control Systems | Factory Automation I/O Modules |
|---|---|
|
Use Scenario: Solid-state switching of 24–48 V DC fan actuators, damper motors, and zone valves in commercial HVAC panels. IC Role / Device Role / Timing Role: Photorelay providing galvanically isolated load switching with zero-crossing immunity and no contact bounce. Use Value: Eliminates mechanical relay wear-out and EMI from arcing, extending system MTBF beyond 1 million cycles. |
Use Scenario: Output stage in programmable logic controller (PLC) digital output cards driving solenoid valves and indicator lamps. IC Role / Device Role / Timing Role: Isolated power switch interfacing microcontroller logic to 24 V DC field devices with integrated overcurrent protection. Use Value: Enables compact, high-density I/O card designs with <1.5 ms response time and no coil drive circuitry. |
| Security System Power Distribution | Measuring Instrument Relay Drivers |
|
Use Scenario: Remote-controlled power gating for access control locks, alarm sirens, and surveillance camera heaters in Class II installations. IC Role / Device Role / Timing Role: Safety-isolated load switch ensuring SELV compliance while delivering up to 4 A continuous current. Use Value: Meets UL 508 requirements for branch-circuit protection without auxiliary fusing or derating penalties. |
Use Scenario: Precision multiplexer switching in multichannel data loggers and calibration equipment requiring low thermal EMF and stable ON-resistance. IC Role / Device Role / Timing Role: Low-drift, low-leakage signal path switch with <1 µA OFF-state current and <60 mΩ RON stability over temperature. Use Value: Maintains measurement accuracy across –20 °C to +70 °C operating range without recalibration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar photorelay applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLP3545AF(TP4,F) | 10.16 mm lead pitch, 8.0 mm creepage/clearance, same electrical specs - optimized for wider spacing in high-voltage PCB layouts | Required where IPC-2221 creepage >7.5 mm mandated for 300 V RMS working voltage | Select when board layout requires enhanced isolation margin or compatibility with legacy 0.4" pitch footprints |
| PS8501-AX | Lower 2 A max ON-current, 100 mΩ RON, 5000 Vrms isolation - smaller SOIC-8 package, no DIP variant | Better suited for low-power signal switching; insufficient for 4 A load switching without parallel devices | Choose only for space-constrained designs where current demand ≤2 A and surface-mount assembly is mandatory |
Compared with TLP3545AF(TP4,F), the TLP3545A(TP1,F) offers tighter 7.62 mm pitch for legacy DIP layouts but lower creepage; versus PS8501-AX, it delivers double the current rating and DIP mounting - making it the sole choice for through-hole 4 A photorelay applications requiring UL 508 certification.
Availability
TLP3545A(TP1,F) is available at Aetrix Electronics and suitable for HVAC control systems, factory automation I/O modules, and security system power distribution requiring stable component supply, long-lifecycle support, and traceable sourcing for industrial OEMs.
Supply support for TLP3545A(TP1,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 high-reliability semiconductor components for industrial, automotive, and consumer applications, with core expertise in optoelectronics, power devices, and memory solutions.
The TLP3545A(TP1,F) belongs to Toshiba's photorelay product line engineered specifically for solid-state replacement of electromechanical relays in industrial control, building automation, and test equipment - emphasizing safety certification, thermal robustness, and long-term parametric stability.
FAQ
What is the maximum continuous ON-state current rating for the TLP3545A(TP1,F)?
The TLP3545A(TP1,F) supports 4 A maximum continuous ON-state current in A-connection configuration at 25 °C ambient, derating linearly to 2.6 A at 85 °C per UL 508 specifications. This rating applies to pins 4 and 6 tied together as drains with pin 5 as source - verified in the Absolute Maximum Ratings table and confirmed in Figure 16.2.1 of the datasheet.
Does the TLP3545A(TP1,F) require external current-limiting resistors on the LED side?
Yes, the TLP3545A(TP1,F) requires an external series resistor to limit LED forward current to ≤3 mA (max trigger) and ≤30 mA (absolute max). For a 3.3 V MCU GPIO, a 470 Ω resistor sets IF ≈ 2.5 mA - within recommended operating conditions and ensuring reliable turn-on without overstressing the infrared LED.
Can the TLP3545A(TP1,F) be used in AC line switching applications?
The TLP3545A(TP1,F) is rated for 60 V DC OFF-state voltage and is not designed for direct AC mains switching. It is suitable for SELV-compliant AC control circuits (e.g., 24 V AC transformer secondaries) and DC power distribution up to 48 V. For 120/230 V AC line switching, a higher-voltage photorelay such as TLP3554A is required.
What safety certifications apply to the TLP3545A(TP1,F) as shipped?
The TLP3545A(TP1,F) carries UL 1577 recognition (File E67349) and UL 508 recognition (File E499232) as standard. VDE EN 60747-5-5 approval requires ordering the D4 option variant (e.g., TLP3545A(D4TP1,F)); the base TLP3545A(TP1,F) does not include VDE marking or testing unless explicitly ordered with D4.
How is thermal performance affected by PCB layout for the TLP3545A(TP1,F)?
Thermal performance of the TLP3545A(TP1,F) depends on copper area connected to pins 4, 5, and 6. The datasheet recommends ≥100 mm² of 2-oz copper per drain pin to maintain junction temperature below 125 °C at 4 A. Without thermal relief, ambient temperature rise exceeds 40 °C above board temperature - verified in Figure 16.1.5 (RON vs. Ta) and derating curves.
TLP3545A(TP1,F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Toshiba Semiconductor and Storage
- Series:
- TLP3545A
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Mounting Type:
- Surface Mount
- Circuit:
- SPST-NO (1 Form A)
- Output Type:
- AC, DC
- Voltage - Input:
- 1.64VDC
- Voltage - Load:
- 0 V ~ 60 V
- Load Current:
- 4 A
- On-State Resistance (Max):
- 60 mOhms
- Termination Style:
- Gull Wing
- Operating Temperature:
- -40°C ~ 110°C
- Supplier Device Package:
- 6-SMD
- Approval Agency:
- CSA, cUL, UL, VDE
- Grade:
- -
- Qualification:
- -
TLP3545A(TP1,F FAQ
1.How can I place an order for TLP3545A(TP1,F through Aetrix?
Please submit a Request for Quotation (RFQ) for TLP3545A(TP1,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 TLP3545A(TP1,F reliable?
The price and inventory of TLP3545A(TP1,F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLP3545A(TP1,F is usually 5 days.
3.What payment methods are accepted for TLP3545A(TP1,F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLP3545A(TP1,F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLP3545A(TP1,F?
TLP3545A(TP1,F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLP3545A(TP1,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 TLP3545A(TP1,F?
For technical support, including TLP3545A(TP1,F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLP3545A(TP1,F requirements.
6.How does Aetrix verify that TLP3545A(TP1,F is sourced from the original manufacturer or authorized distributors?
All TLP3545A(TP1,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 TLP3545A(TP1,F meets industry standards.
7.What is the process for return or replacement of TLP3545A(TP1,F?
All TLP3545A(TP1,F units undergo pre-shipment inspection (PSI). If there is an issue with TLP3545A(TP1,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 TLP3545A(TP1,F part is unused and in its original packaging.
Return procedure for TLP3545A(TP1,F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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