70F226AI-RC Equivalent & Substitute Parts

Part Overview

The 70F226AI-RC is a 2.2 µH unshielded drum core wirewound inductor manufactured by Bourns Inc., rated for 1.132 A with a maximum DC resistance of 156mOhm. This component is classified as obsolete, making equivalent substitute parts necessary for ongoing design support and procurement continuity. The part operates across a temperature range of -55°C to 105°C and is ROHS3 compliant.

Substiute Parts

70F226AI-RC

Bourns Inc.In Stock: 95970F226AI-RC Datasheet

Current PartRFQ

AIAP-01-2R2K-T

Abracon LLCIn Stock: 10696AIAP-01-2R2K-T Datasheet

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SC552R2KR

TE Connectivity Passive ProductIn Stock: 1182SC552R2KR Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 70F226AI-RC is determined by the following critical parameters:

• Inductance Value: Must be 2.2 µH with ±10% tolerance
• Mounting Type: Through hole axial configuration required
• Package / Case: Axial package format
• Inductance Test Frequency: 7.9 MHz measurement standard
• RoHS Compliance: ROHS3 compliant status

Secondary parameters that influence substitution suitability include current rating, DC resistance, shielding configuration, and operating temperature range. Substitute parts must maintain compatibility with the primary electrical and mechanical specifications while accommodating variations in these secondary characteristics based on circuit requirements.

Parameter Comparison

Engineering Selection Recommendations

AIAP-01-2R2K-T (Abracon LLC) is an active product with ROHS3 compliance and superior current handling capability at 2.6 A, exceeding the original 1.132 A rating. This part features significantly lower DC resistance at 31mOhm compared to 156mOhm, resulting in reduced power dissipation. The operating temperature minimum of -40°C is narrower than the original -55°C specification. This substitute is suitable for applications where the lower temperature limit is acceptable and where reduced DC resistance provides circuit benefits.

SC552R2KR (TE Connectivity Passive Product) is an active product with ROHS3 compliance and an extended operating temperature range of -55°C to 125°C, matching the lower temperature limit of the original part while providing additional high-temperature margin. This part features shielding, which differs from the unshielded original design. The current rating of 1.8 A and DC resistance of 60mOhm provide intermediate performance between the original and the Abracon alternative. This substitute is appropriate for applications requiring the full -55°C lower temperature specification and where shielding characteristics are compatible with circuit layout.

Both substitutes maintain the critical 2.2 µH inductance value, ±10% tolerance, through-hole axial mounting, and 7.9 MHz test frequency required for direct replacement.

Frequently Asked Questions (FAQ)

Q: Can AIAP-01-2R2K-T replace 70F226AI-RC in all applications?

A: AIAP-01-2R2K-T meets the core electrical specifications (2.2 µH, ±10%, through-hole axial) but has a minimum operating temperature of -40°C versus the original -55°C. Substitution is valid only if your application does not require operation below -40°C.

Q: What is the primary difference between the two substitute options?

A: SC552R2KR provides full temperature range compatibility (-55°C to 125°C) and includes shielding, while AIAP-01-2R2K-T offers superior current handling (2.6 A) and lower DC resistance (31mOhm) with a narrower temperature range (-40°C to 105°C).

Q: Does the shielding on SC552R2KR affect compatibility?

A: Shielding is a design characteristic that may influence electromagnetic coupling in the circuit. SC552R2KR's shielded configuration differs from the unshielded original. Verify that shielding is compatible with your circuit layout and performance requirements.

Q: Are all three parts ROHS3 compliant?

A: Yes. The original 70F226AI-RC and both substitutes (AIAP-01-2R2K-T and SC552R2KR) are ROHS3 compliant.

Q: Which substitute has the lowest DC resistance?

A: AIAP-01-2R2K-T has the lowest DC resistance at 31mOhm maximum, compared to 60mOhm for SC552R2KR and 156mOhm for the original 70F226AI-RC.

Q: Can I use these substitutes interchangeably in the same PCB design?

A: Physical dimensions differ slightly between parts. Verify that the substitute's size (diameter and length) fits your PCB layout. AIAP-01-2R2K-T measures 0.130" Dia x 0.360" L, SC552R2KR measures 0.165" Dia x 0.394" L, and the original measures 0.160" Dia x 0.250" L.