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Toshiba Semiconductor and Storage TLP3555A(TP1,F
- Part No.:
- TLP3555A(TP1,F
- Manufacturer:
- Toshiba Semiconductor and Storage
- Category:
- Solid State Relays (SSR)
- Package:
- 4-SMD (0.300", 7.62mm)
- Datasheet:
-
TLP3555A(TP1,F.pdf
- Description:
- SSR RELAY SPST-NO 3A 0-60V
- Quantity:
- Payment:
- Shipping:
Inventory:7,471
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Product details
Overview
TLP3555A(TP1,F) from Toshiba Electronic Devices & Storage Corporation is a normally-open photorelay IC comprising an infrared LED optically coupled to a photo-MOSFET output stage, housed in a 4-pin DIP through-hole package. It delivers 3 A maximum ON-state current, ≤100 mΩ ON-resistance, and 60 V minimum OFF-state voltage - enabling reliable AC/DC power line switching in industrial control systems.
For engineers reviewing the TLP3555A(TP1,F) datasheet, TLP3555A(TP1,F) pinout, TLP3555A(TP1,F) application, or TLP3555A(TP1,F) equivalent, key selection criteria include UL 508/UL 1577/cUL/VDE safety certifications, low trigger LED current (≤3 mA), isolation voltage (2500 Vrms), and compatibility with HVAC, factory automation, and ATE load-switching designs.
Technical Context
The TLP3555A(TP1,F) implements optical isolation between input LED and dual-drain MOSFET output, with pins 1–2 forming the LED anode–cathode pair and pins 3–4 shorted as the common drain output terminal. Its internal structure supports single-pole, single-throw (1-Form-A) operation without external biasing.
It operates within –40°C to +85°C ambient temperature, supports 5–48 V supply voltage, and maintains ≤1 µA OFF-state leakage at 60 V. Switching performance includes 0.45 ms typical turn-on time and 0.2 ms typical turn-off time under 20 V/200 Ω test conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Configuration | Normally open (1-Form-A); no default conduction path - requires LED activation to close circuit |
| Max ON-State Current | 3 A continuous; supports direct switching of solenoids, heaters, and motor control loads |
| Max ON-State Resistance | 100 mΩ; limits I²R power loss to ≤900 mW at 3 A, reducing thermal stress in PCB traces |
| Min OFF-State Voltage | 60 V; enables safe blocking of 24–48 V DC control lines and 24 VAC HVAC circuits |
| Trigger LED Current | ≤3 mA max; compatible with standard microcontroller GPIOs without external driver transistors |
| Isolation Voltage | 2500 Vrms (60 s); meets reinforced insulation requirements for functional safety in industrial equipment |
| Safety Certifications | UL 1577 (File E67349), cUL CSA 5A (E67349), UL 508 (E499232), EN 60747-5-5 (with D4 option) |
Pinout & Package
Package: 4-pin DIP (through-hole), Toshiba package code 11-5B2S, 7.62 mm lead pitch, creepage/clearance ≥7.0 mm, isolation thickness ≥0.4 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode | LED input positive terminal; connect to MCU GPIO or driver with current-limiting resistor |
| 2 | Cathode | LED input negative terminal; referenced to system ground for logic-level control |
| 3 | Drain | Common MOSFET output terminal; shorted internally to Pin 4 for dual-drain parallel conduction |
| 4 | Drain | Second MOSFET drain terminal; electrically tied to Pin 3 to double current-handling capability |
Key Features
| Feature | Design Value |
|---|---|
| Optically isolated MOSFET output | Eliminates galvanic coupling between control and load sides - critical for noise immunity in factory automation |
| Low trigger LED current | ≤3 mA max ensures direct drive from 3.3 V/5 V MCUs without level-shifting or amplification |
| Dual-drain parallel configuration | Pins 3 and 4 internally shorted to halve effective RDS(on) and distribute thermal load across two die paths |
| Reinforced safety isolation | 2500 Vrms withstand + UL/cUL/VDE certification enables use in Class I/II industrial mains-connected equipment |
| No external snubber required | Integrated MOSFET structure suppresses voltage spikes during inductive load switching - simplifies PCB layout |
Applications
| HVAC Control Systems | Automatic Test Equipment (ATE) |
|---|---|
|
Use Scenario: Switching 24–48 V DC actuators and 24 VAC zone valves in commercial building climate control panels. IC Role / Device Role / Timing Role: Solid-state replacement for electromechanical relays - provides silent, bounce-free, long-life switching. Use Value: Eliminates contact wear and EMI from arcing; supports >10⁷ cycles vs. ~10⁵ for mechanical relays at same current rating. |
Use Scenario: Routing high-voltage stimulus signals and load connections in semiconductor parametric test fixtures. IC Role / Device Role / Timing Role: Isolated signal-path switch enabling safe, fast reconfiguration of DUT interfaces without ground-loop interference. Use Value: 0.45 ms turn-on time allows sub-millisecond test sequencing; 2500 Vrms isolation protects sensitive SMU instrumentation. |
| Factory Automation I/O Modules | Security System Power Management |
|
Use Scenario: Driving 24 V DC solenoid locks, pneumatic valves, and indicator lamps in PLC remote I/O racks. IC Role / Device Role / Timing Role: Load-switching interface between controller logic and field-side 24 V power rails. Use Value: 3 A rating handles peak inrush of solenoids; UL 508 recognition validates use in certified industrial control panels. |
Use Scenario: Enabling/disabling auxiliary power to motion sensors, door contacts, and alarm sirens in access control panels. IC Role / Device Role / Timing Role: Fail-safe isolation switch that blocks power when alarm state is inactive or during system reset. Use Value: 60 V OFF-state rating covers 48 V backup battery systems; <1 µA leakage prevents standby current drain. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar photorelay applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLP3545A(TP1,F) | Lower ON-state current (1.5 A max), higher RON (200 mΩ max), same 4-pin DIP package and safety certifications | Better suited for signal-level switching or lower-power loads where thermal margin is less critical | Select when load current remains ≤1.5 A and cost optimization is prioritized over headroom |
| PS7141-AL-AX | Higher isolation voltage (5000 Vrms), surface-mount SOIC-4 package, 2.5 A max ON-current, 150 mΩ RON | Designed for space-constrained, high-isolation applications but lacks UL 508 certification | Choose for compact PCB layouts requiring enhanced isolation, accepting trade-offs in current rating and regulatory scope |
Compared with TLP3555A(TP1,F), TLP3545A(TP1,F) offers reduced current handling but identical footprint and safety compliance, while PS7141-AL-AX trades regulatory coverage for higher isolation and SMT compatibility - making TLP3555A(TP1,F) optimal for through-hole industrial power switching where UL 508 and 3 A capacity are mandatory.
Availability
TLP3555A(TP1,F) is available at Aetrix Electronics and suitable for HVAC control systems, factory automation I/O modules, and automatic test equipment requiring stable component supply, long-term lifecycle support, and certified safety compliance.
Supply support for TLP3555A(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 and manufactures discrete semiconductors, power devices, and optoelectronics for industrial, automotive, and consumer applications.
The TLP3555A series belongs to Toshiba's photorelay product line, engineered specifically for solid-state replacement of mechanical relays in industrial control, safety-critical switching, and high-reliability power interface applications.
FAQ
What is the maximum continuous load current supported by the TLP3555A(TP1,F)?
The TLP3555A(TP1,F) supports a maximum continuous ON-state current of 3 A at 25°C ambient, derating linearly to 1.95 A at 85°C per UL 508 specifications. This rating applies to both pins 3 and 4, which are internally shorted to share current. The device must be mounted on a PCB with adequate copper area to maintain junction temperature below 105°C under sustained load.
Does the TLP3555A(TP1,F) require an external flyback diode when switching inductive loads?
No, the TLP3555A(TP1,F) does not require an external flyback diode. Its integrated photo-MOSFET structure inherently suppresses voltage transients during inductive turn-off, eliminating the need for external clamping components. This simplifies design and reduces bill-of-materials count in applications such as solenoid or relay coil driving.
What safety certifications apply to the TLP3555A(TP1,F) out of the box?
The TLP3555A(TP1,F) carries UL 1577 (File E67349), cUL CSA Component Acceptance Service No. 5A (File E67349), and UL 508 (File E499232) certifications as shipped. VDE EN 60747-5-5 approval requires ordering the D4 option variant (e.g., TLP3555A(D4,TP1,F)); the base TLP3555A(TP1,F) is not VDE-approved.
Can the TLP3555A(TP1,F) be used to switch 120 VAC loads?
No, the TLP3555A(TP1,F) is rated for a minimum OFF-state output terminal voltage of 60 V, making it unsuitable for direct 120 VAC switching. It is designed for 24–48 V DC or 24 VAC control-level power distribution. For 120 VAC, a higher-voltage photorelay such as TLP3558A (100 V rating) or external MOSFET driver stage is required.
What is the recommended LED forward current range for reliable operation of the TLP3555A(TP1,F)?
The recommended LED forward current for the TLP3555A(TP1,F) is 5–19.5 mA, with a maximum trigger current of 3 mA to ensure turn-on. Operating at 5–10 mA provides robust margin against aging and temperature drift while maintaining low power consumption. Exceeding 30 mA absolute maximum risks permanent LED degradation.
TLP3555A(TP1,F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Toshiba Semiconductor and Storage
- Series:
- TLP3555A
- 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:
- 3 A
- On-State Resistance (Max):
- 100 mOhms
- Termination Style:
- Gull Wing
- Operating Temperature:
- -40°C ~ 110°C
- Supplier Device Package:
- 4-SMD
- Approval Agency:
- CSA, cUL, UL, VDE
- Grade:
- -
- Qualification:
- -
TLP3555A(TP1,F FAQ
1.How can I place an order for TLP3555A(TP1,F through Aetrix?
Please submit a Request for Quotation (RFQ) for TLP3555A(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 TLP3555A(TP1,F reliable?
The price and inventory of TLP3555A(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 TLP3555A(TP1,F is usually 5 days.
3.What payment methods are accepted for TLP3555A(TP1,F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLP3555A(TP1,F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLP3555A(TP1,F?
TLP3555A(TP1,F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLP3555A(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 TLP3555A(TP1,F?
For technical support, including TLP3555A(TP1,F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLP3555A(TP1,F requirements.
6.How does Aetrix verify that TLP3555A(TP1,F is sourced from the original manufacturer or authorized distributors?
All TLP3555A(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 TLP3555A(TP1,F meets industry standards.
7.What is the process for return or replacement of TLP3555A(TP1,F?
All TLP3555A(TP1,F units undergo pre-shipment inspection (PSI). If there is an issue with TLP3555A(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 TLP3555A(TP1,F part is unused and in its original packaging.
Return procedure for TLP3555A(TP1,F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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