70F227AP-RC Equivalent & Substitute Parts

Part Overview

The 70F227AP-RC is a 220 nH unshielded wirewound inductor manufactured by Bourns Inc., designed for through-hole axial mounting applications. This component features a phenolic core with a maximum DC resistance of 380mOhm and supports a current rating of 2.294 A across an operating temperature range of -55°C to 125°C. The product is classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing design requirements and procurement needs.

Substiute Parts

70F227AP-RC

Bourns Inc.In Stock: 82970F227AP-RC Datasheet

Current PartRFQ

B78108E1221M000

EPCOS - TDK ElectronicsIn Stock: 5989B78108E1221M000 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 70F227AP-RC is determined by the following critical parameters:

• Inductance Value: 220 nH (primary electrical specification)
• Tolerance: ±20% (acceptable variation range)
• Mounting Type: Through Hole (mechanical compatibility)
• Package / Case: Axial (form factor requirement)
• Operating Temperature Range: -55°C ~ 125°C (environmental specification)
• Shielding: Unshielded (electromagnetic characteristic)
• RoHS Compliance: ROHS3 Compliant (regulatory requirement)

The B78108E1221M000 from EPCOS - TDK Electronics meets all substitution criteria. While this alternative features improved electrical performance characteristics (higher current rating, lower DCR, higher saturation current), it maintains the same inductance value, tolerance, mounting type, package configuration, operating temperature range, and regulatory compliance status as the original component.

Parameter Comparison

Engineering Selection Recommendations

The B78108E1221M000 is a direct functional substitute for the obsolete 70F227AP-RC. Both components are ROHS3 compliant and operate across the identical temperature range. The substitute part is currently in active production status with substantial inventory availability (5891 pcs), ensuring supply chain continuity.

The B78108E1221M000 demonstrates superior electrical performance with a current rating of 5.9 A compared to the original 2.294 A specification, and significantly reduced DC resistance of 19mOhm versus 380mOhm. These improvements provide enhanced thermal performance and reduced power dissipation in circuit applications. The higher self-resonant frequency (610MHz versus 400MHz) extends the usable frequency range for high-frequency applications.

Physical dimensions differ slightly (0.157" Dia x 0.374" L versus 0.140" Dia x 0.310" L), requiring verification of mechanical fit within existing PCB layouts and enclosure constraints.

Frequently Asked Questions (FAQ)

Q: Can the B78108E1221M000 replace the 70F227AP-RC in all applications?

A: The B78108E1221M000 meets all critical electrical and mechanical substitution criteria: identical inductance value, tolerance, mounting type, package configuration, operating temperature range, and regulatory compliance. Physical dimensions require verification for mechanical fit in existing designs.

Q: What are the key differences between these components?

A: The substitute part features improved current handling capability (5.9 A versus 2.294 A), significantly lower DC resistance (19mOhm versus 380mOhm), and higher self-resonant frequency (610MHz versus 400MHz). The core material differs (ferrite drum core versus phenolic), and physical dimensions are slightly larger.

Q: Are both components RoHS compliant?

A: Yes, both the 70F227AP-RC and B78108E1221M000 are ROHS3 compliant, meeting current regulatory requirements for electronic component manufacturing and use.

Q: What is the inductance tolerance for these parts?

A: Both components maintain a ±20% inductance tolerance, ensuring consistent performance across the specified tolerance band for 220 nH inductance applications.

Q: Does the substitute part fit the same PCB footprint?

A: Both components use through-hole axial mounting with identical package configuration. However, physical dimensions differ slightly (0.157" Dia x 0.374" L for the substitute versus 0.140" Dia x 0.310" L for the original). PCB layout verification is required to confirm mechanical compatibility.