Bourns 70F101AF Equivalent & Substitute Parts

Part Overview

The Bourns 70F101AF is a 100 mH unshielded drum core wirewound inductor rated for 29 mA maximum current with 278 Ohm DC resistance. This through-hole axial component operates across -55°C to 105°C and is designed for applications requiring fixed inductance in the 100 mH range with moderate current handling.

The 70F101AF carries an obsolete product status. Identifying equivalent substitute parts is necessary to maintain design continuity and ensure component availability for production, repair, and redesign applications.

Substiute Parts

70F101AF

Bourns Inc.In Stock: 117270F101AF Datasheet

Current PartRFQ

70F101AF-RC

Bourns Inc.In Stock: 152370F101AF-RC Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the 70F101AF is determined by strict equivalence across all critical electrical and mechanical parameters:

• Inductance Value: Must be 100 mH ±5%
• Current Rating: Must support minimum 29 mA
• DC Resistance: Must not exceed 278 Ohm
• Core Material & Type: Ferrite drum core, unshielded
• Mounting & Package: Through-hole axial configuration
• Temperature Range: Must cover -55°C to 105°C
• Frequency Characteristics: Q @ 79 kHz and self-resonant frequency must remain within specified ranges
• Physical Dimensions: 0.440" Dia x 0.630" L (11.18 mm x 16.00 mm)

The 70F101AF-RC meets all these criteria and is classified as a direct substitute.

Parameter Comparison

Engineering Selection Recommendations

The 70F101AF-RC is the direct substitute for the obsolete 70F101AF. Both parts are manufactured by Bourns Inc. within the same 70F series and maintain identical electrical and mechanical specifications.

The primary distinction is product status and regulatory compliance. The 70F101AF-RC is an active product with ROHS3 compliance, whereas the original 70F101AF is obsolete and RoHS non-compliant. For new designs or production requiring RoHS compliance, the 70F101AF-RC is the appropriate selection. Both parts maintain REACH Unaffected status and EAR99 classification.

Packaging differs between the two parts: the original 70F101AF is supplied in standard packaging, while the 70F101AF-RC is supplied in bulk packaging. This distinction affects procurement and handling but does not alter electrical or mechanical performance.

Frequently Asked Questions (FAQ)

Q: Can the 70F101AF-RC be used as a direct replacement for the 70F101AF?

A: Yes. The 70F101AF-RC is electrically and mechanically identical to the 70F101AF. All critical parameters including inductance, current rating, DC resistance, core type, dimensions, and operating temperature range are equivalent.

Q: What is the primary reason to switch from 70F101AF to 70F101AF-RC?

A: The 70F101AF is obsolete. The 70F101AF-RC is an active product from the same manufacturer and series, ensuring continued availability. Additionally, the 70F101AF-RC meets ROHS3 compliance requirements, whereas the original part does not.

Q: Are there any differences in physical dimensions between these parts?

A: No. Both parts share identical dimensions of 0.440" Dia x 0.630" L (11.18 mm x 16.00 mm) and use the same through-hole axial package configuration.

Q: Does packaging type affect component performance?

A: No. The difference between standard and bulk packaging does not affect electrical or mechanical performance. Packaging type is a procurement and logistics consideration only.

Q: Are both parts suitable for the same operating temperature range?

A: Yes. Both the 70F101AF and 70F101AF-RC operate across -55°C to 105°C.

Q: What compliance certifications apply to the 70F101AF-RC?

A: The 70F101AF-RC is ROHS3 compliant and REACH Unaffected. Both parts carry EAR99 classification and fall under HTSUS code 8504.50.8000.