IR2156STR Equivalent & Substitute Parts

Part Overview

The IR2156STR is a ballast controller IC manufactured by Infineon Technologies, designed for fluorescent lamp ballast applications operating in the 36kHz to 44kHz frequency range. This component integrates control logic for high-frequency switching applications with a 14-SOIC surface mount package.

The IR2156STR carries an obsolete product status. Locating equivalent or substitute components is necessary for ongoing production support, maintenance applications, and design continuity where this controller remains specified in existing systems.

Substiute Parts

IR2156STR

Infineon TechnologiesIn Stock: 30123IR2156STR Datasheet

Current PartRFQ

IR2156STRPBF

Infineon TechnologiesIn Stock: 17150IR2156STRPBF Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the IR2156STR is determined by strict equivalence across the following parameters:

• Functional Type: Ballast Controller with identical control architecture
• Frequency Range: 36kHz ~ 44kHz operation
• Electrical Specifications: Supply voltage 10.5V ~ 16.5V, supply current 10 mA
• Package Compatibility: 14-SOIC form factor with identical pinout
• Operating Temperature Range: -25°C ~ 125°C
• Dimming Capability: No dimming function required

The IR2156STRPBF meets all these criteria and qualifies as a direct substitute. Both parts share the same base product number (IR2156) and are manufactured by Infineon Technologies with identical electrical and mechanical specifications.

Parameter Comparison

Engineering Selection Recommendations

The IR2156STRPBF is the direct substitute for the obsolete IR2156STR. Both components are electrically and mechanically identical across all functional parameters.

Product Status Consideration: The IR2156STR is obsolete, while the IR2156STRPBF maintains active production status. For new designs or ongoing production requiring this ballast controller, the IR2156STRPBF ensures continued component availability and supply chain stability.

Compliance Difference: The IR2156STRPBF achieves ROHS3 compliance, whereas the IR2156STR is RoHS non-compliant. Applications subject to RoHS regulations must use the IR2156STRPBF. The IR2156STRPBF also carries a Moisture Sensitivity Level (MSL) rating of 3 (168 Hours), compared to MSL 1 for the IR2156STR, requiring appropriate handling protocols during storage and assembly.

Certification Status: Both parts maintain identical REACH Unaffected and EAR99 ECCN classifications.

Frequently Asked Questions (FAQ)

Q: Can IR2156STRPBF directly replace IR2156STR in existing designs?

A: Yes. Both components share identical electrical specifications, frequency range, supply voltage, operating temperature range, and 14-SOIC package configuration. No circuit modifications are required for substitution.

Q: What is the difference between IR2156STR and IR2156STRPBF?

A: The primary differences are product status (obsolete vs. active), RoHS compliance (non-compliant vs. ROHS3 compliant), and Moisture Sensitivity Level (MSL 1 vs. MSL 3). Electrical and mechanical specifications are identical.

Q: Does the MSL 3 rating of IR2156STRPBF affect compatibility?

A: MSL 3 (168 Hours) indicates moisture sensitivity during storage and assembly. This requires proper handling and storage conditions but does not affect electrical compatibility or circuit performance. Standard ESD and moisture control procedures during assembly are required.

Q: Are there any pinout differences between these parts?

A: No. Both parts use the 14-SOIC package with identical pinout and electrical characteristics. PCB layout and schematic connections remain unchanged.

Q: Why is the IR2156STR listed as obsolete?

A: The IR2156STR has been superseded by the IR2156STRPBF, which offers improved compliance status and active manufacturing support. Infineon Technologies continues production of the IR2156STRPBF for ballast controller applications.