IR2156PBF Equivalent & Substitute Parts

Part Overview

The IR2156PBF is a ballast controller IC manufactured by Infineon Technologies, designed for fluorescent lamp ballast applications operating in the 36kHz to 44kHz frequency range. This through-hole mounted 14-DIP component is classified as obsolete, making identification of suitable alternatives essential for ongoing production support and design updates. The IR2156PBF operates with a supply voltage range of 10.5V to 16.5V and maintains a maximum supply current of 10mA across an operating temperature range of -25°C to 125°C.

Substiute Parts

IR2156PBF

Infineon TechnologiesIn Stock: 5710IR2156PBF Datasheet

Current PartRFQ

IR2156STRPBF

Infineon TechnologiesIn Stock: 17150IR2156STRPBF Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the IR2156PBF is determined by strict equivalence across the following electrical and mechanical parameters:

• Functional Type: Ballast Controller with identical frequency range (36kHz ~ 44kHz)
• Electrical Specifications: Matching voltage supply range (10.5V ~ 16.5V) and supply current (10 mA)
• Operating Temperature Range: Identical range (-25°C ~ 125°C)
• Base Product Number: Same IR2156 series designation
• Manufacturer: Infineon Technologies

The IR2156STRPBF qualifies as a direct substitute based on these parameters. The primary difference is the package format: the substitute transitions from through-hole 14-DIP to surface-mount 14-SOIC, with corresponding changes in product status (Active vs. Obsolete) and compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

The IR2156STRPBF is the active equivalent for the obsolete IR2156PBF. Selection between these parts depends on board-level design constraints:

IR2156PBF: Suitable only for legacy systems already designed with through-hole 14-DIP footprints. Given obsolete status, this part should be sourced only for maintenance or repair of existing equipment.

IR2156STRPBF: The recommended choice for new designs and production continuity. This part maintains identical electrical specifications while offering active product status and ROHS3 compliance. The surface-mount 14-SOIC package requires PCB redesign but provides superior manufacturing compatibility with modern assembly processes.

Both parts carry REACH Unaffected status and EAR99 ECCN classification. The transition from MSL 1 to MSL 3 requires standard moisture control procedures during storage and assembly for the substitute part.

Frequently Asked Questions (FAQ)

Q: Can IR2156STRPBF directly replace IR2156PBF in existing designs?

A: Electrical substitution is complete. However, the package change from 14-DIP to 14-SOIC requires PCB footprint modification. Pin-to-pin electrical compatibility is maintained.

Q: What is the significance of the product status change from Obsolete to Active?

A: Active status indicates the IR2156STRPBF is in current production with ongoing manufacturer support. The obsolete IR2156PBF has reached end-of-life and may face supply constraints.

Q: How does the MSL rating difference affect component handling?

A: IR2156PBF (MSL 1) has unlimited shelf life without moisture control. IR2156STRPBF (MSL 3) requires storage in controlled humidity environments and must be used within 168 hours of package opening under standard conditions.

Q: Are there any compliance differences between these parts?

A: Both parts are REACH Unaffected. The IR2156STRPBF adds ROHS3 compliance, meeting current environmental regulations for new product designs.

Q: What are the key electrical parameters that define substitution eligibility?

A: Frequency range (36kHz ~ 44kHz), supply voltage (10.5V ~ 16.5V), supply current (10 mA), and operating temperature range (-25°C ~ 125°C) must remain identical for functional equivalence.