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Toshiba Semiconductor and Storage TLP3122A(E
- Part No.:
- TLP3122A(E
- Manufacturer:
- Toshiba Semiconductor and Storage
- Category:
- Solid State Relays (SSR)
- Package:
- 6-SOP (0.179", 4.55mm), 4 Leads
- Datasheet:
-
TLP3122A(E.pdf
- Description:
- SSR RELAY SPST-NO 1.4A 0-60V
- Quantity:
- Payment:
- Shipping:
Inventory:665
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Product details
Overview
TLP3122A(E) from Toshiba Electronic Devices & Storage Corporation is a halogen-free, normally-open photorelay IC comprising an infrared LED optically coupled to a photo-MOSFET in a 4-pin SO6 (11-4M1S) package. It delivers 1.4 A max ON-state current, 0.25 Ω max ON-resistance, and 60 V min OFF-state voltage-enabling solid-state replacement of mechanical relays in high-current on/off control circuits for industrial automation and battery management systems.
For engineers reviewing the TLP3122A(E) datasheet, TLP3122A(E) pinout, TLP3122A(E) application, or TLP3122A(E) equivalent, key selection criteria include its UL- and VDE-certified 3750 Vrms isolation, 3 mA max trigger LED current, -40°C to 110°C operating temperature range, and suitability for safety-critical PLC I/O modules, ATE load switching, and non-automotive BMS contactor control.
Technical Context
The TLP3122A(E) implements optical isolation between input LED and output photo-MOSFET stages, with no electrical connection across the barrier. Its internal structure treats Pins 1 and 3 as a single anode-cathode pair and Pins 4 and 6 as a common drain output-functioning as a two-terminal, single-pole single-throw (1-Form-A) solid-state switch.
It operates under UL 508 and UL 1577 recognition with EN 60747-5-5 compliance when specified with V4 option. Electrical performance is defined across derated IF–Ta and ION–Ta curves, supporting stable operation up to 85°C under UL 508 conditions and 110°C per general specifications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Voltage | 3750 Vrms (min) - meets reinforced insulation requirements for industrial mains-connected equipment per UL/EN standards |
| ON-State Current | 1.4 A (max) - supports direct switching of solenoids, heaters, and DC loads without external amplification |
| ON-Resistance | 0.25 Ω (max) - limits conduction loss to ≤500 mW at 1.4 A, enabling low-thermal-footprint PCB layouts |
| Trigger LED Current | 3 mA (max) - compatible with standard MCU GPIOs or low-power logic drivers without buffer stages |
| OFF-State Voltage | 60 V (min) - sustains blocking across 48 V DC systems with margin for transients and ripple |
| Operating Temp Range | -40°C to +110°C - enables deployment in factory-floor enclosures and uncooled BMS junction boxes |
| Package | SO6 (11-4M1S), surface-mount - provides 5.0 mm creepage/clearance for IPC-2221 Class B spacing compliance |
Pinout & Package
Package: 4-pin SO6 (Toshiba designation 11-4M1S), surface-mount, halogen-free resin body, 0.1 g typical weight. Creepage and clearance ≥5.0 mm; internal isolation thickness ≥0.2 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Anode | LED anode input - connects to current-limited driver (e.g., MCU GPIO + series resistor) |
| Pin 3 | Cathode | LED cathode return - tied internally to Pin 1 as two-terminal LED configuration |
| Pins 4 & 6 | Drain (common) | Photo-MOSFET drain terminals - shorted internally; serves as single high-current output node |
Key Features
| Feature | Design Value |
|---|---|
| Halogen-free packaging | Meets IEC 61249-2-21; Br/Cl ≤0.09 wt%, total halogens ≤0.15 wt% - supports RoHS-compliant and eco-conscious industrial designs |
| UL & VDE safety certification | UL 1577 (E67349), UL 508 (E499232), EN 60747-5-5 (V4 option) - enables direct use in certified control panels without additional system-level isolation |
| Low trigger threshold | 3 mA max IFT - eliminates need for LED driver ICs; reduces component count in space-constrained PLC I/O modules |
| High reliability switching | 10⁶ minimum mechanical operations, zero contact bounce, no arcing - extends service life vs. electromechanical relays in FA equipment |
| Thermal derating support | ION derating slope of -14.0 mA/°C above 25°C - enables precise thermal design for continuous 1 A operation at 85°C ambient |
Applications
| PLC Digital Output Module | ATE Load Switching |
|---|---|
Use Scenario: Isolated 24 V DC output channel driving solenoid valves or indicator lamps in modular programmable logic controllers. IC Role / Device Role / Timing Role: Solid-state output switch replacing electromechanical relay; provides galvanic isolation and fast, bounce-free switching. Use Value: Enables 1.4 A per channel at <0.25 Ω RON, reducing heat generation and eliminating coil wear-critical for high-cycle industrial control cabinets. |
Use Scenario: Precision DC load switching in automated test equipment for functional validation of power supplies and battery packs. IC Role / Device Role / Timing Role: High-isolation, low-leakage output stage controlling DUT power rails during test sequences. Use Value: 0.002 µA max IOFF at 60 V ensures minimal leakage-induced measurement error; 3750 Vrms isolation prevents cross-channel coupling in multi-rail testers. |
| Battery Management System (Non-Automotive) | Security System Power Control |
Use Scenario: Contactor pre-charge and main power path switching in stationary energy storage systems (ESS) and UPS units. IC Role / Device Role / Timing Role: Isolated gate driver interface for high-side MOSFETs or direct load switching in BMS protection circuitry. Use Value: 60 V VOFF rating accommodates 48 V nominal battery stacks with 20% overvoltage margin; halogen-free construction meets fire-safety requirements for indoor ESS enclosures. |
Use Scenario: Zone power enable/disable in access control panels and intrusion detection hubs managing multiple door locks or alarm sirens. IC Role / Device Role / Timing Role: Optically isolated output switch delivering 12–24 V DC to field devices while maintaining system-level fault containment. Use Value: UL 508 recognition permits direct integration into listed security control panels; 110°C max operating temp supports compact, fanless enclosure designs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar photorelay applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| PVG612A | Higher 1.5 A ION, but 0.35 Ω RON; same SO6 package, 3750 Vrms isolation | Marginally higher conduction loss; slightly lower thermal efficiency at full load | Prefer for applications requiring >1.4 A peak current where RON increase is acceptable |
| APV1122 | Lower 1.0 A ION, 0.3 Ω RON, 60 V VOFF, same 3 mA IFT; also SO6, UL/VDE certified | Reduced current capacity limits use in high-power solenoid or heater control | Select when footprint compatibility is critical but load current remains ≤1.0 A and thermal budget allows higher RON |
Compared with PVG612A and APV1122, the TLP3122A(E) offers the optimal balance of low RON (0.25 Ω), high ION (1.4 A), and broad temperature range (-40°C to 110°C), making it preferred for thermally constrained industrial control and BMS applications demanding both efficiency and robustness.
Availability
TLP3122A(E) is available at Aetrix Electronics and suitable for programmable logic controllers, automatic test equipment, and battery management systems requiring stable component supply, long-term lifecycle support, and certified isolation performance.
Supply support for TLP3122A(E) 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 high-reliability semiconductor components for industrial, automotive, and consumer applications, with emphasis on safety, efficiency, and environmental compliance.
The TLP3122A(E) belongs to Toshiba's photorelay product line, engineered specifically for solid-state replacement of mechanical relays in industrial control, test instrumentation, and power management systems where long life, zero contact wear, and regulatory certification are mandatory.
FAQ
What is the maximum continuous ON-state current rating for the TLP3122A(E)?
The TLP3122A(E) has a maximum continuous ON-state current (ION) of 1.4 A at Ta = 25°C. Derating applies above 25°C at -14.0 mA/°C, allowing ~1.0 A at 85°C ambient. This rating is validated under UL 508 conditions and supports direct switching of industrial loads such as solenoids and heating elements without external current boosting.
Does the TLP3122A(E) require external current-limiting resistors on the LED side?
Yes, the TLP3122A(E) requires an external series resistor to limit LED forward current to ≤3 mA (max trigger) and ≤50 mA (absolute max). For a 5 V MCU GPIO, a 1.5 kΩ resistor sets IF ≈ 3.3 mA - within safe operating range. The resistor value must be recalculated for higher supply voltages per the recommended operating conditions table in the datasheet.
Is the TLP3122A(E) certified for use in UL 508-listed control panels?
Yes, the TLP3122A(E) is UL-recognized under UL 508 (File No. E499232) for use in industrial control equipment. This certification covers its isolation, thermal, and electrical performance under defined derating conditions. Note that UL 508-rated operation restricts maximum case temperature to 105°C and operating ambient to -40°C to +85°C.
What is the meaning of "(E" suffix in TLP3122A(E)?
The "(E" suffix in TLP3122A(E) denotes the standard tape-and-reel packaging variant (3000 pcs per reel) with no VDE option. It corresponds to the base photorelay configuration meeting UL 1577 and UL 508 requirements. Other variants include (V4,E) for EN 60747-5-5 compliance and (TPL,E) for tape-and-reel with different orientation.
Can the TLP3122A(E) replace mechanical relays in battery disconnect applications?
Yes, the TLP3122A(E) is widely used for non-automotive battery disconnect and pre-charge functions in energy storage systems. Its 60 V VOFF, 1.4 A ION, and 0.25 Ω RON support 48 V DC battery stacks. However, it is not rated for automotive AEC-Q101 or ISO 26262 applications - use only in stationary BMS per its specified non-automotive classification.
TLP3122A(E Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Toshiba Semiconductor and Storage
- Series:
- TLP3122A
- Packaging:
- Tube
- Product Status:
- Active
- Mounting Type:
- Surface Mount
- Circuit:
- SPST-NO (1 Form A)
- Output Type:
- AC, DC
- Voltage - Input:
- 1.27VDC
- Voltage - Load:
- 0 V ~ 60 V
- Load Current:
- 1.4 A
- On-State Resistance (Max):
- 250 mOhms
- Termination Style:
- Gull Wing
- Operating Temperature:
- -40°C ~ 110°C
- Supplier Device Package:
- 6-SO, 4 Lead
- Approval Agency:
- CSA, cUL, UL, VDE
- Grade:
- -
- Qualification:
- -
TLP3122A(E FAQ
1.How can I place an order for TLP3122A(E through Aetrix?
Please submit a Request for Quotation (RFQ) for TLP3122A(E 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 TLP3122A(E reliable?
The price and inventory of TLP3122A(E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLP3122A(E is usually 5 days.
3.What payment methods are accepted for TLP3122A(E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLP3122A(E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLP3122A(E?
TLP3122A(E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLP3122A(E 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 TLP3122A(E?
For technical support, including TLP3122A(E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLP3122A(E requirements.
6.How does Aetrix verify that TLP3122A(E is sourced from the original manufacturer or authorized distributors?
All TLP3122A(E 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 TLP3122A(E meets industry standards.
7.What is the process for return or replacement of TLP3122A(E?
All TLP3122A(E units undergo pre-shipment inspection (PSI). If there is an issue with TLP3122A(E, 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 TLP3122A(E part is unused and in its original packaging.
Return procedure for TLP3122A(E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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