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Vishay Semiconductor Opto Division LH1522AACTR
- Part No.:
- LH1522AACTR
- Manufacturer:
- Vishay Semiconductor Opto Division
- Category:
- Solid State Relays (SSR)
- Package:
- 8-SMD (0.300", 7.62mm)
- Datasheet:
-
LH1522AACTR.pdf
- Description:
- SSR RELAY SPST-NO 120MA 0-200V
- Quantity:
- Payment:
- Shipping:
Inventory:4,922
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Product details
Overview
LH1522AACTR from Vishay Semiconductors is a dual-channel, normally open solid-state relay (SSR) with GaAlAs LED input and MOSFET output stages, delivering 5300 VRMS isolation, 12 Ω typical on-resistance, and 200 V/200 mA (single channel) load handling - used in telecom switching, security equipment, and industrial control signal isolation.
For engineers reviewing the LH1522AACTR datasheet, LH1522AACTR pinout, LH1522AACTR application, or LH1522AACTR equivalent, this device supports clean bounce-free switching, low-power actuation (0.4 mA typical turn-on IF), and safety-certified insulation per UL 1577, VDE 0884-5, and CQC GB4943.1 - critical for high-reliability isolated control design.
Technical Context
The LH1522AACTR integrates two independent optically isolated SPST NO switches in one SMD-8 package. Each channel uses a GaAlAs IRED coupled to a high-voltage MOSFET output stage, enabling galvanic isolation without mechanical contacts or coil-induced EMI.
It operates across -40 °C to +85 °C ambient, supports up to 200 V DC/AC load voltage per channel, and delivers 640 mW output safety power at 25 °C (one channel), with normalized on-resistance stable over temperature (±15% from -40 °C to +85 °C).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Voltage | 5300 VRMS - enables safe separation between control and load circuits in mains-connected systems |
| On-Resistance (RON) | 12 Ω typical - minimizes conduction loss and self-heating at 200 mA load current |
| Load Voltage Rating | 200 V - supports direct switching of 24 VDC, 48 VDC telecom, and 120/230 VAC auxiliary loads |
| Load Current Rating | 200 mA (single channel), 140 mA (dual channel) - defines maximum continuous current per switch path |
| Turn-On/Off Time | 0.20 ms / 0.04 ms typical - enables fast digital control response without contact bounce artifacts |
| Input Forward Current (IFon) | 0.4 mA typical - allows direct drive from low-power MCU GPIOs without external amplification |
| Off-State Leakage | <1 nA at ±100 V - ensures negligible standby power draw and high signal integrity in high-impedance circuits |
Pinout & Package
SMD-8 surface-mount package (9.80 mm × 6.65 mm × 3.55 mm), RoHS-compliant, tape-and-reel packaging (1000 units/reel), designed for reflow soldering per J-STD-020 MSL Level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2 | IRED Anode / Cathode (Channel 1) | Optical input pair for first SSR channel; requires series resistor for 5–10 mA drive |
| 3, 4 | MOSFET Drain / Source (Channel 1) | High-side load switch terminals; 200 V rating, 200 mA max, 12 Ω RON |
| 5, 6 | IRED Anode / Cathode (Channel 2) | Independent optical input for second SSR channel; electrically isolated from Channel 1 |
| 7, 8 | MOSFET Drain / Source (Channel 2) | Second isolated load switch path; shares same isolation barrier rating as Channel 1 |
Key Features
| Feature | Design Value |
|---|---|
| Bounce-free switching | Zero mechanical contact wear or arcing - eliminates failure mode common in EM relays |
| 5300 VRMS isolation | Meets reinforced insulation requirements for functional safety in Class I equipment |
| Low 0.4 mA turn-on IF | Reduces MCU I/O loading and system-level power consumption vs. legacy optocouplers |
| 12 Ω typical RON | Enables <100 mW conduction loss at 200 mA - suitable for thermally constrained PCB layouts |
| UL/cUL/VDE/CQC certified | Validated for use in end-equipment requiring regulatory approval without additional system-level testing |
Applications
| Telecom Line Switching | Security Panel Zone Control |
|---|---|
Use Scenario: Isolating and routing POTS line signals in VoIP gateways and PBX interface modules. IC Role / Device Role / Timing Role: Dual SPST NO SSR providing galvanically isolated signal path selection with zero cross-talk. Use Value: Eliminates relay chatter noise and extends service life beyond 10⁷ cycles - critical for unattended telecom infrastructure. |
Use Scenario: Controlling zone inputs (door/window sensors, motion detectors) in fire/alarm control panels. IC Role / Device Role / Timing Role: Isolated input conditioning switch that decouples field wiring from microcontroller logic. Use Value: Prevents ground-loop interference and surge propagation into sensitive MCU circuitry during lightning events. |
| Industrial PLC I/O Modules | ATE Semiconductor Test Fixtures |
Use Scenario: Driving 24 VDC solenoids and indicator lamps in modular PLC output cards. IC Role / Device Role / Timing Role: Solid-state replacement for electromechanical relays in DIN-rail mounted control hardware. Use Value: Enables 1 kHz switching frequency and 10× longer MTBF than EM relays - reducing maintenance downtime. |
Use Scenario: Routing test signals between DUT pins and measurement instruments in automated wafer probe stations. IC Role / Device Role / Timing Role: Precision, low-leakage isolation switch ensuring signal fidelity during parametric testing. Use Value: Sub-nA off-state leakage preserves measurement accuracy for picoamp-level leakage current tests. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar solid-state relay applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Vishay LH1522AAC | Same die, tube packaging (50 pcs/tube); identical electrical specs and SMD-8 footprint | No tape-and-reel handling - suited for prototyping or low-volume manual assembly | Select LH1522AAC when small-batch evaluation or hand-soldering is required; no performance trade-off. |
| IXYS CPC1976Y | Single-channel SSR; 400 V load rating, 120 mA current, 3750 VRMS isolation, SOIC-8 package | Higher voltage capability but lower current and reduced isolation - not dual-channel | Choose CPC1976Y only if single-channel 400 V switching is needed; LH1522AACTR provides dual 200 V paths with superior isolation. |
Compared with LH1522AAC, the LH1522AACTR offers identical performance in tape-and-reel format for automated SMT production; versus CPC1976Y, it delivers dual-channel operation and 5300 VRMS isolation - essential for safety-critical dual-load control.
Availability
LH1522AACTR is available at Aetrix Electronics and suitable for telecom switching, security equipment, and industrial control applications requiring stable component supply, long-term lifecycle support, and certified safety isolation.
Supply support for LH1522AACTR 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
Vishay Intertechnology is a global semiconductor manufacturer specializing in discrete components, optoelectronics, and passive devices, with emphasis on reliability, precision, and safety certification.
The LH1522AACTR belongs to Vishay's LH15xx family of dual-channel solid-state relays, engineered specifically for replacing electromechanical relays in space-constrained, high-cycle-count industrial and telecom systems.
FAQ
What is the maximum load voltage the LH1522AACTR can switch?
The LH1522AACTR supports up to 200 V DC or peak AC load voltage per channel. This rating applies under steady-state conditions at ambient temperatures up to +85 °C and is validated per UL 1577 and VDE 0884-5 safety standards. Exceeding 200 V may compromise isolation integrity or accelerate MOSFET degradation.
Does the LH1522AACTR require an external current-limiting resistor on its input side?
Yes, the LH1522AACTR requires an external series resistor on each IRED anode (Pins 1 and 5) to limit forward current to ≤50 mA absolute maximum. For typical 3.3 V or 5 V MCU GPIO drive, a 220 Ω to 470 Ω resistor ensures ~5–10 mA forward current - sufficient for reliable turn-on while staying within the 80 mW input power dissipation limit.
Can both channels of the LH1522AACTR be operated simultaneously at full rated load?
No - when both channels operate concurrently, the maximum continuous DC load current per channel is derated to 140 mA (vs. 200 mA for single-channel operation). This limitation arises from thermal coupling in the shared SMD-8 package and is specified in the Absolute Maximum Ratings table to maintain junction temperature below 150 °C.
What safety certifications does the LH1522AACTR hold?
The LH1522AACTR is certified to UL 1577 (5300 VRMS), cUL, DIN EN 60747-5-5 (VDE 0884-5), CQC GB4943.1, CQC GB8898, and FIMKO. These approvals confirm compliance with reinforced insulation requirements for functional safety in end equipment operating up to 250 V RMS mains voltage.
Is the LH1522AACTR compatible with lead-free reflow soldering processes?
Yes, the LH1522AACTR is qualified for lead-free reflow per J-STD-020, with a peak temperature rating of 260 °C (10 s max). Its moisture sensitivity level is MSL 1, meaning unlimited floor life under ≤30 °C / ≤60% RH conditions - eliminating bake requirements prior to assembly.
LH1522AACTR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay Semiconductor Opto Division
- Series:
- LH1522
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Mounting Type:
- Surface Mount
- Circuit:
- SPST-NO (1 Form A) x 2
- Output Type:
- AC, DC
- Voltage - Input:
- 1.26VDC
- Voltage - Load:
- 0 V ~ 200 V
- Load Current:
- 120 mA
- On-State Resistance (Max):
- 10 Ohms
- Termination Style:
- Gull Wing
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 8-SMD
- Approval Agency:
- CSA, KIN, FIMKO, UL
- Grade:
- -
- Qualification:
- -
LH1522AACTR FAQ
1.How can I place an order for LH1522AACTR through Aetrix?
Please submit a Request for Quotation (RFQ) for LH1522AACTR 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 LH1522AACTR reliable?
The price and inventory of LH1522AACTR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LH1522AACTR is usually 5 days.
3.What payment methods are accepted for LH1522AACTR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LH1522AACTR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LH1522AACTR?
LH1522AACTR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LH1522AACTR 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 LH1522AACTR?
For technical support, including LH1522AACTR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LH1522AACTR requirements.
6.How does Aetrix verify that LH1522AACTR is sourced from the original manufacturer or authorized distributors?
All LH1522AACTR 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 LH1522AACTR meets industry standards.
7.What is the process for return or replacement of LH1522AACTR?
All LH1522AACTR units undergo pre-shipment inspection (PSI). If there is an issue with LH1522AACTR, 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 LH1522AACTR part is unused and in its original packaging.
Return procedure for LH1522AACTR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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