LH1513AAC Equivalent & Substitute Parts

Part Overview

The LH1513AAC is a solid-state relay (SSR) manufactured by Vishay Semiconductor Opto Division, configured as a SPST-NO (Single Pole Single Throw - Normally Open) relay with dual channels in an 8-SMD surface mount package. This component is designed for AC and DC load switching applications with a maximum load voltage of 200V and 140mA current capacity. The product is currently obsolete, making identification of compatible substitute parts essential for ongoing system support and new design implementations.

Substiute Parts

LH1513AAC

Vishay Semiconductor Opto DivisionIn Stock: 100018LH1513AAC Datasheet

Current PartRFQ

LAA127STR

IXYS Integrated Circuits DivisionIn Stock: 3322LAA127STR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LH1513AAC is determined by strict alignment of the following electrical and mechanical parameters:

• Circuit Configuration: SPST-NO (1 Form A) x 2 dual-channel architecture
• Package Type: 8-SMD (0.300", 7.62mm) with Gull Wing termination for direct PCB compatibility
• Mounting Method: Surface Mount technology
• Input Voltage: Nominal 1.2VDC to 1.26VDC control signal
• Load Voltage Range: Minimum 0V to 200V or higher
• Load Current Capacity: Minimum 140mA
• On-State Resistance: Maximum 10 Ohms
• Output Capability: AC and DC load switching support
• Compliance: ROHS3 compliance and MSL Level 1 rating

The LAA127STR meets all substitution criteria with enhanced electrical specifications, providing higher load voltage capability (250V) and increased current capacity (200mA) while maintaining identical package geometry and control voltage requirements.

Parameter Comparison

Engineering Selection Recommendations

The LAA127STR is the qualified substitute for the obsolete LH1513AAC based on the following engineering criteria:

Electrical Compatibility: The LAA127STR maintains identical input voltage control requirements (1.2VDC vs. 1.26VDC) and on-state resistance specifications (10 Ohms maximum). The substitute provides enhanced load voltage capability (250V vs. 200V) and increased current handling (200mA vs. 140mA), ensuring full backward compatibility with existing circuit designs while providing additional performance margin.

Package and Mechanical Compatibility: Both components utilize identical 8-SMD (0.300", 7.62mm) surface mount packages with Gull Wing termination, enabling direct PCB footprint compatibility without layout modifications.

Compliance and Regulatory Status: The LAA127STR maintains ROHS3 compliance and MSL Level 1 rating, matching the environmental and regulatory requirements of the original component. The substitute is currently in active production status, ensuring long-term availability and supply chain stability.

Frequently Asked Questions (FAQ)

Q: Can the LAA127STR directly replace the LH1513AAC without PCB modifications?

A: Yes. Both components share identical package geometry (8-SMD, 0.300" / 7.62mm) and Gull Wing termination style, enabling direct footprint compatibility. No PCB layout changes are required.

Q: What are the key electrical differences between these components?

A: The LAA127STR provides enhanced specifications: load voltage capability increases from 200V to 250V, and load current capacity increases from 140mA to 200mA. Input voltage control requirements remain functionally equivalent (1.26VDC vs. 1.2VDC), and on-state resistance remains at 10 Ohms maximum for both parts.

Q: Why is the LH1513AAC obsolete?

A: The LH1513AAC has been discontinued by Vishay Semiconductor Opto Division. The LAA127STR from IXYS Integrated Circuits Division provides equivalent functionality with enhanced electrical performance and active production status.

Q: Are there any compliance or environmental concerns with substitution?

A: No. Both components maintain ROHS3 compliance and MSL Level 1 (Unlimited) moisture sensitivity rating, ensuring equivalent environmental and regulatory compliance.

Q: What circuit configurations do these relays support?

A: Both the LH1513AAC and LAA127STR are configured as dual-channel SPST-NO (Single Pole Single Throw - Normally Open) relays, each providing one Form A contact per channel. Both support AC and DC load switching applications.

Q: Are the input voltage requirements compatible with existing control circuits?

A: Yes. The input voltage specifications are functionally equivalent: LH1513AAC requires 1.26VDC while LAA127STR requires 1.2VDC. Standard logic-level control circuits (3.3V or 5V) will operate both components reliably.