IR2171STR Equivalent & Substitute Parts

Part Overview

The IR2171STR is a current sense regulator manufactured by Infineon Technologies, designed for power management applications requiring precise current monitoring. This 8-SOIC surface mount device operates across an input voltage range of 9.5V to 20V with a 1mA output specification and supports operating temperatures from -40°C to 125°C.

The IR2171STR is classified as obsolete. Locating equivalent or substitute components is necessary to support ongoing system maintenance, design updates, or production continuity when original inventory becomes unavailable.

Substiute Parts

IR2171STR

Infineon TechnologiesIn Stock: 1066IR2171STR Datasheet

Current PartRFQ

IR2175SPBF

Infineon TechnologiesIn Stock: 1575IR2175SPBF Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the IR2171STR is evaluated based on the following critical parameters that must align for functional compatibility:

• Package / Case: Both main and substitute parts must use the 8-SOIC (0.154", 3.90mm Width) form factor to ensure PCB footprint compatibility
• Voltage - Input Range: Both parts operate within 9.5V ~ 20V, maintaining electrical compatibility
• Operating Temperature Range: Both parts support -40°C ~ 125°C, ensuring thermal compatibility
• Mounting Type: Both parts are surface mount devices, compatible with existing assembly processes
• Manufacturer: Both parts are manufactured by Infineon Technologies, ensuring design continuity and support

The IR2175SPBF qualifies as a substitute based on these aligned parameters. While the IR2175SPBF provides enhanced specifications (20mA output versus 1mA, ±0.5% accuracy, and improved RoHS compliance), the core electrical and mechanical compatibility remains within acceptable substitution criteria for this component category.

Parameter Comparison

Engineering Selection Recommendations

The IR2175SPBF serves as the manufacturer-recommended substitute for the IR2171STR. Both components share identical electrical operating parameters (input voltage range, operating temperature) and mechanical compatibility (8-SOIC package, surface mount configuration).

The IR2175SPBF provides improved product compliance through ROHS3 certification, whereas the IR2171STR is RoHS non-compliant. Both parts carry identical export classification (EAR99) and tariff codes (8542.39.0001).

Both the IR2171STR and IR2175SPBF are classified as obsolete products. Selection between these components should account for regulatory requirements, inventory availability, and application-specific current output demands (1mA versus 20mA).

Frequently Asked Questions (FAQ)

Q: Can the IR2175SPBF directly replace the IR2171STR in existing designs?

A: The IR2175SPBF is mechanically and electrically compatible with the IR2171STR due to identical package geometry (8-SOIC), input voltage range (9.5V ~ 20V), and operating temperature specifications (-40°C ~ 125°C). However, the IR2175SPBF provides 20mA output compared to the IR2171STR's 1mA output. Circuit design verification is required to confirm that the higher output current does not affect system performance.

Q: What are the key differences between these parts?

A: The primary differences are current output specification (1mA versus 20mA), accuracy rating (not specified for IR2171STR versus ±0.5% for IR2175SPBF), and RoHS compliance status (non-compliant versus ROHS3 compliant). Both parts maintain identical input voltage range, operating temperature range, and 8-SOIC package configuration.

Q: Are both parts still available for purchase?

A: Both the IR2171STR and IR2175SPBF are classified as obsolete products. Availability depends on distributor inventory. The IR2175SPBF currently shows higher inventory levels (1555 Pcs) compared to the IR2171STR (983 Pcs).

Q: Does the IR2175SPBF meet RoHS requirements?

A: Yes, the IR2175SPBF is ROHS3 compliant. The IR2171STR is RoHS non-compliant. If RoHS compliance is a design requirement, the IR2175SPBF is the appropriate selection.

Q: Are there any packaging differences between these parts?

A: Both parts use the 8-SOIC (0.154", 3.90mm Width) package. The IR2171STR packaging is not specified, while the IR2175SPBF is supplied in tube packaging. PCB footprint compatibility is maintained.