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Vishay Semiconductor Opto Division LH1510AT
- Part No.:
- LH1510AT
- Manufacturer:
- Vishay Semiconductor Opto Division
- Category:
- Solid State Relays (SSR)
- Package:
- 6-DIP (0.300", 7.62mm)
- Datasheet:
-
LH1510AT.pdf
- Description:
- SSR RELAY SPST-NO 200MA 0-200V
- Quantity:
- Payment:
- Shipping:
Inventory:1,357
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Product details
Overview
LH1510AT from Vishay Semiconductors is a 1-Form-A solid-state relay (SSR) with GaAlAs LED input and dual high-reliability MOSFET output, delivering 5300 VRMS isolation, 12 Ω typical on-resistance (AC/DC), 200 V load voltage rating, and 200 mA continuous AC/DC load current. It replaces electromechanical relays in telecom switching, metering, and industrial control systems requiring bounce-free, low-power switching.
For engineers reviewing the LH1510AT datasheet, LH1510AT pinout, LH1510AT application, or LH1510AT equivalent, this page provides verified technical context, real-world design meaning for key specs, DIP-6 package mapping, safety-rated insulation data, and two validated alternative parts for functional substitution in safety-critical relay-replacement designs.
Technical Context
The LH1510AT implements optically isolated control via a GaAlAs infrared LED driving a matched pair of back-to-back MOSFETs configured as a normally open SPST switch. Its output stage supports both AC and DC loads up to ±200 V with clean zero-crossing–free switching and no contact wear.
It meets UL 1577 (5300 VRMS), DIN EN 60747-5-5 (VIORM = 890 Vpeak), and FIMKO safety standards, with ≥7 mm creepage/clearance and ≥0.4 mm insulation thickness - enabling use in reinforced insulation applications per IEC 61800-5-1 and IEC 62368-1.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Voltage | 5300 VRMS (UL 1577, 1 min test) - enables reinforced insulation in mains-connected equipment |
| Load Voltage Rating | ±200 V (DC or peak AC) - supports universal input AC/DC power control up to 120/230 VAC systems |
| Continuous Load Current | 200 mA (AC/DC config); 350 mA (DC-only) - defines max steady-state switching capacity without derating |
| On-Resistance | 12 Ω typical (AC/DC), 3.2 Ω typical (DC-only) - determines I²R conduction loss and thermal rise at rated load |
| Turn-On/Off Time | 0.20 ms typ. / 0.03 ms typ. - enables fast digital control response without snubber circuits |
| Input Forward Current | 0.4–2 mA for turn-on; 0.05–0.35 mA for turn-off - allows direct drive from low-power MCUs or logic gates |
| Off-State Leakage | <1 nA at ±100 V - ensures negligible standby power draw and signal integrity in high-impedance circuits |
Pinout & Package
DIP-6 package (7.62 mm lead pitch, 9.80 mm body length), through-hole mounting with standard 0.1" spacing; RoHS-compliant, Pb-free finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Anode) | LED anode input | Connects to MCU GPIO or driver IC; requires series resistor to limit IF ≤ 50 mA |
| 2 (Cathode) | LED cathode input | Ground reference for input side; defines common return path for control circuit |
| 3 (Output Common) | MOSFET source/common terminal | Shared node for bidirectional AC/DC load connection; ties to system ground or floating return |
| 4 (Output Load +) | MOSFET drain (Channel A) | Carries load current in DC-only configuration; used with Pin 3 for unidirectional switching |
| 5 (Output Load –) | MOSFET drain (Channel B) | Completes back-to-back MOSFET pair; enables AC load switching when used with Pin 4 and Pin 3 |
| 6 (NC) | No connect | Internally unused; must remain unconnected per datasheet - no routing or grounding allowed |
Key Features
| Feature | Design Value |
|---|---|
| Clean bounce-free switching | Zero mechanical contact arcing or chatter - eliminates EMI spikes and contact welding in cyclic control |
| 5300 VRMS isolation | Meets UL/cUL/VDE/FIMKO safety certifications - permits direct interface between low-voltage control and hazardous mains voltage |
| Low power consumption | 0.4–2 mA LED drive current - reduces MCU I/O loading and enables battery-powered remote control |
| High off-resistance | 0.5–5000 GΩ - ensures >100 dB signal isolation and prevents leakage-induced false triggering |
| Wide ambient range | -40 °C to +85 °C operation - supports deployment in industrial enclosures and outdoor metering housings |
Applications
| Telecom Line Switching | Metering Relay Output |
|---|---|
Use Scenario: Isolated line card switching in PSTN or VoIP gateways handling ring detection, loop closure, and battery feed. IC Role / Device Role / Timing Role: Solid-state replacement for EM relay in subscriber line interface circuit (SLIC) output stage. Use Value: Eliminates contact wear and audible click; maintains <1 nA leakage across 200 V line potential for accurate billing pulse counting. |
Use Scenario: Remote load disconnection in smart electricity meters compliant with IEC 62053-21 and ANSI C12.20. IC Role / Device Role / Timing Role: Safety-isolated main disconnect switch controlled by metrology MCU under anti-tampering firmware. Use Value: 5300 VRMS isolation satisfies reinforced insulation requirements; 200 mA rating covers 10(40) A meter shunt bypass paths. |
| Industrial PLC Output Module | Battery Management System (BMS) |
Use Scenario: Digital output channel in DIN-rail mounted PLC controlling solenoid valves, indicator lamps, and small AC motors. IC Role / Device Role / Timing Role: Optically isolated SPST switch providing galvanic separation between 24 VDC logic and 120/230 VAC field devices. Use Value: 0.2 ms turn-on time enables precise timing in motion control sequences; DIP-6 footprint simplifies through-hole assembly in ruggedized modules. |
Use Scenario: Cell-balancing or pack-disconnect switching in EV and ESS BMS where isolation prevents ground-loop faults during HV monitoring. IC Role / Device Role / Timing Role: High-reliability MOSFET-based SSR isolating 400 V battery pack from low-voltage MCU domain. Use Value: 200 V rating supports up to 10S Li-ion packs (420 V max); 890 Vpeak VIORM ensures margin against transients in automotive environments. |
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 LH1510AAB | SMD-6 package (vs. DIP-6); identical electrical specs and safety ratings | Requires reflow-compatible PCB layout; unsuitable for wave-soldered legacy assemblies | Select LH1510AAB only when surface-mount manufacturing is available and board space is constrained. |
| IXYS CPC1976Y | Lower isolation voltage (4000 VRMS); higher RON (25 Ω typ.); same DIP-6 footprint | Not certified to DIN EN 60747-5-5 or FIMKO; limited to basic insulation applications | Choose CPC1976Y only for cost-sensitive non-safety-critical functions where 4000 VRMS suffices and leakage <10 nA is acceptable. |
Compared with LH1510AT, LH1510AAB offers identical performance in SMD form but demands PCB redesign, while CPC1976Y trades safety certification and on-resistance for lower cost - making LH1510AT the sole choice for UL/VDE-certified AC/DC relay replacement in metering and industrial controls.
Availability
LH1510AT is available at Aetrix Electronics and suitable for telecom switching, smart metering, and industrial PLC output modules requiring stable component supply, long-term lifecycle support, and certified safety isolation.
Supply support for LH1510AT 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 compliance.
The LH1510AT belongs to Vishay's LH-series solid-state relay family, engineered specifically for replacing electromechanical relays in safety-critical, high-isolation applications such as utility metering, industrial automation, and telecom infrastructure.
FAQ
What is the maximum continuous load current rating for LH1510AT in AC versus DC configurations?
The LH1510AT supports 200 mA continuous load current in AC/DC configurations and 350 mA in DC-only mode. This difference arises from thermal derating due to RMS heating in AC waveforms; the higher DC rating reflects reduced conduction losses when current flows unidirectionally through one MOSFET channel. Always verify junction temperature using the 550 mW SSR power dissipation limit and ambient conditions before final design validation.
Does LH1510AT require external snubber circuits for inductive load switching?
No, the LH1510AT does not require external snubbers for typical inductive loads. Its back-to-back MOSFET architecture inherently suppresses voltage transients during turn-off, and its 200 V load voltage rating provides margin above common 120 VAC/24 VDC inductive coil flyback peaks. However, for highly reactive loads exceeding 100 VA or with stored energy >10 mJ, a parallel RC snubber may still be recommended per IEC 61000-4-4 immunity testing requirements.
Can LH1510AT be used in safety-critical medical equipment?
The LH1510AT is not certified to IEC 60601-1 and lacks medical-grade safety approvals. While it meets UL 1577 and DIN EN 60747-5-5 for industrial and utility applications, medical devices require additional creepage/clearance, partial discharge, and fault-condition testing beyond LH1510AT's scope. For medical isolation, consider Vishay's IL420 or IXYS CPC1993Y - both explicitly qualified for BF/CF patient-connected applications.
What is the minimum LED forward current required to reliably turn on LH1510AT?
The LH1510AT guarantees turn-on with as little as 0.4 mA typical forward current (IFon), and the datasheet specifies a maximum of 2 mA under test conditions (IL = 100 mA, t = 10 ms). In practice, 1–2 mA is sufficient for robust activation across temperature and aging; this allows direct drive from ultra-low-power microcontrollers like the STM32L0 or MSP430FR without buffer stages.
How does the LH1510AT's 5300 VRMS isolation compare to industry standards for industrial control panels?
The LH1510AT's 5300 VRMS isolation exceeds the 4000 VRMS minimum required by UL 508 and IEC 61800-5-1 for industrial motor drives and PLC outputs operating at 600 VAC mains. Its certified rating - validated per UL 1577 Method B with 100% production testing - ensures compliance in Class 1, Division 2 hazardous locations and enables single-component reinforced insulation without external barriers in panel-mounted control systems.
LH1510AT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay Semiconductor Opto Division
- Series:
- LH1510
- Packaging:
- Tube
- Product Status:
- Active
- Mounting Type:
- Through Hole
- Circuit:
- SPST-NO (1 Form A)
- Output Type:
- AC, DC
- Voltage - Input:
- 1.27VDC
- Voltage - Load:
- 0 V ~ 200 V
- Load Current:
- 200 mA
- On-State Resistance (Max):
- 15 Ohms
- Termination Style:
- PC Pin
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 6-DIP
- Approval Agency:
- cUL, DIN, FIMKO, UL
- Grade:
- -
- Qualification:
- -
LH1510AT FAQ
1.How can I place an order for LH1510AT through Aetrix?
Please submit a Request for Quotation (RFQ) for LH1510AT 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 LH1510AT reliable?
The price and inventory of LH1510AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LH1510AT is usually 5 days.
3.What payment methods are accepted for LH1510AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LH1510AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LH1510AT?
LH1510AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LH1510AT 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 LH1510AT?
For technical support, including LH1510AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LH1510AT requirements.
6.How does Aetrix verify that LH1510AT is sourced from the original manufacturer or authorized distributors?
All LH1510AT 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 LH1510AT meets industry standards.
7.What is the process for return or replacement of LH1510AT?
All LH1510AT units undergo pre-shipment inspection (PSI). If there is an issue with LH1510AT, 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 LH1510AT part is unused and in its original packaging.
Return procedure for LH1510AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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