LBA126L Equivalent & Substitute Parts

Part Overview

The LBA126L is a solid-state relay manufactured by Littelfuse, configured as SPST-NO/NC (1 Form A and B) in an 8-DIP package. This component operates with a 1.2VDC input and supports load voltages from 0V to 250V at 150mA maximum load current. The product is classified as obsolete, making identification of compatible substitute parts essential for ongoing system maintenance and new design implementations.

Substiute Parts

LBA126L

LittelfuseIn Stock: 1313LBA126L Datasheet

Current PartRFQ

LH1512BB

Vishay Semiconductor Opto DivisionIn Stock: 20251LH1512BB Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LBA126L is determined by the following critical parameters:

Electrical Compatibility:

• Circuit configuration must match: SPST-NO + SPST-NC (1 Form A and B)
• Input voltage must be compatible with 1.2VDC control signal
• Load voltage range must accommodate 0V ~ 250V operation
• Load current capability must meet or exceed 150mA requirement
• Output type must support both AC and DC loads

Mechanical Compatibility:

• Package type must be 8-DIP (0.300", 7.62mm)
• Mounting type must be Through Hole
• Termination style must be PC Pin

Regulatory & Compliance:

• REACH compliance status
• ECCN and HTSUS classifications

The LH1512BB from Vishay Semiconductor Opto Division qualifies as a substitute based on matching circuit configuration, package dimensions, mounting type, and termination style, while meeting or exceeding electrical performance specifications.

Parameter Comparison

Engineering Selection Recommendations

The LH1512BB is a direct substitute for the LBA126L based on matching mechanical form factor, circuit topology, and regulatory classification. The substitute part is currently in active production status, ensuring long-term availability compared to the obsolete LBA126L.

Electrical performance of the LH1512BB exceeds the LBA126L in load current capacity (200mA vs. 150mA) and on-state resistance (10 Ohms vs. 20 Ohms maximum). The input voltage specification is compatible (1.26VDC vs. 1.2VDC).

The primary design consideration is the load voltage range: the LH1512BB is rated for 0V ~ 200V, while the LBA126L supports 0V ~ 250V. Applications requiring load voltages above 200V cannot use the LH1512BB as a direct substitute.

Both parts maintain identical REACH compliance status and export classification codes, supporting equivalent regulatory requirements.

Frequently Asked Questions (FAQ)

Q: Can the LH1512BB replace the LBA126L in all applications?

A: The LH1512BB is mechanically and electrically compatible for most applications. However, if your circuit requires load voltages exceeding 200V, the LH1512BB cannot be used. The LBA126L supports up to 250V load voltage.

Q: Are the pin configurations identical between these parts?

A: Both parts use the 8-DIP (0.300", 7.62mm) package with PC Pin termination. Pin-to-pin compatibility is maintained for Through Hole PCB mounting.

Q: Does the LH1512BB provide better performance than the LBA126L?

A: The LH1512BB offers improved electrical characteristics: 200mA load current capacity versus 150mA, and 10 Ohms maximum on-state resistance versus 20 Ohms. These enhancements reduce power dissipation and support higher switching loads.

Q: What is the input voltage tolerance for the LH1512BB?

A: The LH1512BB operates with a 1.26VDC input specification, compared to 1.2VDC for the LBA126L. This 0.06VDC difference is within typical control signal tolerances for solid-state relay applications.

Q: Are there regulatory or compliance differences between these parts?

A: Both parts share identical REACH compliance status (REACH Unaffected), ECCN classification (EAR99), and HTSUS code (8536.41.0030). No regulatory differences exist between the LBA126L and LH1512BB.

Q: Why is the LBA126L classified as obsolete?

A: The LBA126L is no longer manufactured by Littelfuse. The LH1512BB from Vishay represents the current-generation equivalent in this product category, with active production status and ongoing availability.