10M331K Equivalent & Substitute Parts

Part Overview

The 10M331K is a 3.3 µH unshielded wirewound inductor manufactured by Gowanda Electronics, designed for RF applications requiring axial through-hole mounting. This molded component operates across a temperature range of -55°C to 105°C with a maximum DC resistance of 850 mOhm and supports a current rating of 270 mA. The part is currently active in production with 1141 units in stock. Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be maintained across the specified parameter set.

Substiute Parts

10M331K

Gowanda ElectronicsIn Stock: 119010M331K Datasheet

Current PartRFQ

1025-32K

API Delevan Inc.In Stock: 9271025-32K Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 10M331K is determined by matching the following critical parameters:

• Inductance value: 3.3 µH with ±10% tolerance
• Current rating: minimum 270 mA
• DC resistance: 850 mOhm maximum
• Q factor: 45 @ 7.9 MHz
• Self-resonant frequency: 90 MHz
• Operating temperature range: -55°C ~ 105°C
• Shielding configuration: Unshielded
• Mounting and package: Through-hole axial configuration with 0.095" Dia x 0.250" L dimensions

The 1025-32K from API Delevan Inc. meets all electrical and mechanical substitution criteria, with current rating of 285 mA exceeding the minimum requirement and identical DC resistance, Q factor, and frequency characteristics.

Parameter Comparison

Engineering Selection Recommendations

The 1025-32K qualifies as a direct substitute for the 10M331K based on electrical parameter equivalence and mechanical compatibility. The 1025-32K provides a higher current rating of 285 mA compared to the 270 mA specification of the 10M331K, offering additional margin in current-handling capacity. Both parts maintain identical inductance, tolerance, DC resistance, Q factor, and self-resonant frequency characteristics.

Compliance considerations differ between the two parts: the 10M331K carries RoHS Not Applicable status, while the 1025-32K is RoHS non-compliant. Both parts are REACH Unaffected and classified under ECCN EAR99. Selection between these parts should account for system-level compliance requirements and regulatory constraints applicable to the end application.

Frequently Asked Questions (FAQ)

Q: What electrical parameters must match for the 1025-32K to substitute the 10M331K?

A: The inductance value (3.3 µH), tolerance (±10%), DC resistance (850 mOhm maximum), Q factor (45 @ 7.9 MHz), self-resonant frequency (90 MHz), and operating temperature range (-55°C ~ 105°C) must remain equivalent. The 1025-32K meets all these requirements.

Q: Does the higher current rating of the 1025-32K (285 mA vs. 270 mA) affect compatibility?

A: No. A higher current rating provides additional design margin and does not compromise compatibility. The part can safely handle the original design current of 270 mA.

Q: Are the physical dimensions identical between these parts?

A: Yes. Both the 10M331K and 1025-32K share identical axial package dimensions of 0.095" Dia x 0.250" L (2.41mm x 6.35mm), ensuring mechanical interchangeability in through-hole PCB applications.

Q: What is the difference in packaging between these parts?

A: The 10M331K is supplied in Tape & Reel (TR) packaging, while the 1025-32K is supplied in Cut Tape (CT) packaging. Both formats are suitable for automated assembly processes, with selection dependent on production line requirements.

Q: How do the RoHS compliance statuses differ?

A: The 10M331K is marked RoHS Not Applicable, while the 1025-32K is RoHS non-compliant. Applications requiring RoHS compliance should verify that the 1025-32K meets system-level regulatory requirements before substitution.

Q: Are both parts suitable for RF applications?

A: Yes. Both parts are unshielded wirewound inductors with identical RF characteristics, including Q factor and self-resonant frequency, making them suitable for RF circuit applications within the specified frequency range.