4426R-4 Fixed Inductor Equivalent & Substitute Parts

Part Overview

The 4426R-4 is a 12.5 nH unshielded wirewound surface mount inductor manufactured by API Delevan Inc., rated for 3 A continuous current. This component is designed for high-frequency applications requiring low inductance values with minimal parasitic effects. The part is currently in active production status with full RoHS3 compliance and unlimited moisture sensitivity rating.

Substitute parts are identified when design requirements permit component interchange based on matching or exceeding critical electrical and mechanical parameters while maintaining compatibility with the application circuit and physical constraints.

Substiute Parts

4426R-4

API Delevan Inc.In Stock: 10934426R-4 Datasheet

Current PartRFQ

AIAC-1512C-12N5J-T

Abracon LLCIn Stock: 3098AIAC-1512C-12N5J-T Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 4426R-4 is determined by the following mandatory criteria:

Electrical Parameters (Must Match or Exceed):

• Inductance value: 12.5 nH ±5% tolerance
• Current rating: minimum 3 A (substitute may exceed)
• Shielding configuration: unshielded only
• Core material: air core only
• Self-resonant frequency: 3 GHz minimum
• Q factor @ 150 MHz: 137 or higher preferred

Mechanical Parameters (Must Match):

• Mounting type: surface mount only
• Package configuration: nonstandard form factor
• Physical dimensions: compatible with 4426R series footprint

Environmental & Compliance (Must Match or Exceed):

• Operating temperature range: -55°C to 125°C minimum coverage
• RoHS3 compliance: required
• Moisture sensitivity level: MSL 1 (unlimited) preferred
• REACH status: unaffected

The AIAC-1512C-12N5J-T from Abracon LLC meets all mandatory substitution criteria with the exception of operating temperature range, which is limited to -40°C to 125°C.

Parameter Comparison

Engineering Selection Recommendations

Primary Part: 4426R-4 (API Delevan Inc.)

The 4426R-4 is the specified component with full active production status. Selection of this part is appropriate when the complete operating temperature range of -55°C to 125°C is required and when the larger physical footprint (3.68mm x 3.05mm) is accommodated by the PCB layout.

Substitute Part: AIAC-1512C-12N5J-T (Abracon LLC)

The AIAC-1512C-12N5J-T is qualified as a substitute when all of the following conditions are met:

1. Operating temperature requirements do not extend below -40°C
2. PCB layout permits the smaller footprint (3.30mm x 2.50mm) and reduced height (2.80mm)
3. The higher current rating (4.3 A versus 3 A) is acceptable for the application
4. The specified DC resistance of 3 mOhm maximum is compatible with circuit performance

Both parts maintain identical electrical performance at the specified test frequency of 150 MHz, with matching Q factor and self-resonant frequency characteristics. Both parts carry full RoHS3 compliance and unlimited moisture sensitivity rating, ensuring regulatory and environmental compatibility.

Frequently Asked Questions (FAQ)

Q: Can the AIAC-1512C-12N5J-T be used in applications requiring operation below -40°C?

A: No. The AIAC-1512C-12N5J-T operating temperature range is -40°C to 125°C. Applications requiring operation at -55°C or lower must use the 4426R-4, which is rated to -55°C to 125°C.

Q: Are the physical dimensions of these two inductors compatible with the same PCB footprint?

A: No. The 4426R-4 measures 3.68mm L x 3.05mm W x 3.18mm H, while the AIAC-1512C-12N5J-T measures 3.30mm L x 2.50mm W x 2.80mm H. The substitute part is smaller in all dimensions. PCB layout must be verified to accommodate the smaller footprint before substitution.

Q: Do both parts have identical electrical characteristics?

A: Both parts have identical inductance (12.5 nH), tolerance (±5%), Q factor (137 @ 150 MHz), and self-resonant frequency (3 GHz). The AIAC-1512C-12N5J-T provides a higher current rating (4.3 A versus 3 A) and specifies DC resistance (3 mOhm maximum), which the 4426R-4 does not specify.

Q: What is the significance of the higher current rating on the substitute part?

A: The AIAC-1512C-12N5J-T is rated for 4.3 A continuous current, exceeding the 4426R-4 rating of 3 A. This provides additional thermal margin in applications operating at or near the 3 A level. However, this does not affect substitution eligibility, as the substitute meets or exceeds all critical parameters.

Q: Are both parts RoHS3 compliant?

A: Yes. Both the 4426R-4 and AIAC-1512C-12N5J-T are RoHS3 compliant with REACH unaffected status and MSL 1 (unlimited) moisture sensitivity rating.

Q: What packaging format is used for both parts?

A: Both parts are supplied in Tape & Reel (TR) packaging, suitable for automated assembly processes.