SRE6603-220M Equivalent & Substitute Parts

Part Overview

The SRE6603-220M is a 22 µH shielded drum core wirewound inductor manufactured by Bourns Inc., rated for 700 mA continuous current with 110 mOhm maximum DC resistance. This component is classified as obsolete, necessitating identification of active equivalent parts for new designs and ongoing production requirements. Substitute parts must maintain electrical performance across inductance, current rating, and DC resistance specifications while accommodating packaging and thermal operating range variations.

Substiute Parts

SRE6603-220M

Bourns Inc.In Stock: 771SRE6603-220M Datasheet

Current PartRFQ

SRR6603-220ML

Bourns Inc.In Stock: 5747SRR6603-220ML Datasheet

DirectRFQ

P1174.223NLT

Pulse ElectronicsIn Stock: 1115P1174.223NLT Datasheet

DirectRFQ

UP0.4SC-220-R

Eaton - Electronics DivisionIn Stock: 1178UP0.4SC-220-R Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict equivalence across the following critical parameters: inductance value (22 µH), inductance tolerance (±20%), current rating (minimum 700 mA), DC resistance (maximum 110 mOhm), shielding requirement (shielded), and surface mount packaging. Parts are grouped into two categories:

Direct Equivalents maintain all electrical specifications and operating characteristics within the defined tolerances, differing only in product status (active vs. obsolete) or packaging format (cut tape vs. tape & reel).

Compatible Alternatives satisfy the core electrical requirements but may exhibit variations in saturation current, self-resonant frequency, or operating temperature range that do not compromise circuit functionality for standard applications.

Parameter Comparison

Engineering Selection Recommendations

SRR6603-220ML is the primary substitute for SRE6603-220M. Both parts are manufactured by Bourns Inc. within the SRE/SRR6603 series, maintaining identical electrical specifications including 22 µH inductance, 700 mA current rating, 110 mOhm DCR, and 40 Q factor at 100 kHz. SRR6603-220ML is active production status with extended operating temperature range (-55°C to 125°C) and improved availability. Dimensional variation is negligible (height difference of 0.08 mm). This part is suitable for direct replacement in all applications.

UP0.4SC-220-R from Eaton Electronics Division provides full electrical equivalence with identical current rating, DCR, and Q factor specifications. The UNI-PAC™ 0.4SC series maintains the same package footprint and height as the original part. Operating temperature range (-40°C to 125°C) covers standard industrial applications. This part is recommended where Eaton component qualification is required or preferred.

P1174.223NLT from Pulse Electronics is a compatible alternative for applications where current requirements do not exceed 500 mA continuous operation. While inductance, tolerance, and shielding specifications match, the reduced current rating (500 mA vs. 700 mA) and slightly elevated DCR (120 mOhm vs. 110 mOhm) require circuit-level verification. Self-resonant frequency is reduced to 20 MHz. This part is suitable only for designs with confirmed current headroom and frequency margin.

Frequently Asked Questions (FAQ)

Q: Can SRR6603-220ML be used as a direct replacement for SRE6603-220M?

A: Yes. Both parts share identical electrical specifications: 22 µH inductance, ±20% tolerance, 700 mA current rating, 110 mOhm maximum DCR, and 40 Q factor at 100 kHz. SRR6603-220ML is the active production equivalent with superior availability and extended temperature range. Dimensional differences are within acceptable PCB layout tolerances.

Q: What is the difference between SRE6603-220M and SRR6603-220ML packaging?

A: SRE6603-220M is supplied in cut tape format, while SRR6603-220ML is supplied in tape & reel format. Both use identical component specifications. Tape & reel packaging is standard for high-volume production and automated assembly.

Q: Is P1174.223NLT suitable for all applications using SRE6603-220M?

A: No. P1174.223NLT has a reduced current rating of 500 mA compared to the 700 mA rating of SRE6603-220M. This part is suitable only for circuits where peak and continuous current requirements do not exceed 500 mA. Circuit analysis is required to confirm compatibility.

Q: What are the key differences between UP0.4SC-220-R and SRE6603-220M?

A: UP0.4SC-220-R maintains electrical equivalence across all critical parameters: inductance, current rating, DCR, and Q factor. The primary difference is manufacturer (Eaton vs. Bourns). Operating temperature range is extended to -40°C to 125°C. Physical dimensions and package footprint are identical.

Q: Are all substitute parts RoHS compliant?

A: Yes. SRR6603-220ML, P1174.223NLT, and UP0.4SC-220-R are all RoHS3 compliant or RoHS compliant, meeting environmental and regulatory requirements equivalent to the original SRE6603-220M.

Q: What is the saturation current specification and why does it vary?

A: Saturation current (Isat) indicates the current level at which inductor core saturation begins, causing inductance degradation. SRE6603-220M and SRR6603-220ML specify 300 mA Isat, while P1174.223NLT specifies 500 mA. Higher saturation current provides greater margin before performance degradation. UP0.4SC-220-R does not specify this parameter. Circuit design should maintain operating current below saturation limits.

Q: Can these parts be used interchangeably in high-frequency applications?

A: Self-resonant frequency varies across parts: SRE6603-220M, SRR6603-220ML, and UP0.4SC-220-R operate to 25 MHz, while P1174.223NLT is limited to 20 MHz. For applications operating near or above 20 MHz, verify that the selected part's self-resonant frequency provides adequate margin above the circuit operating frequency.