Asia-Paci fic: Tel +886-2 256 241 17
asiacus@bourns.com
Americas: Tel +1-951 781-5500
americus@bourns.com
EMEA: Tel +36 88 885 877
eurocus@bourns.com
PRODUCT OBSOLESCENCE MEMO
MAGNETICS
Riverside, California – June 4, 2021 – In accordance with our ongoing product lifecycle management procedure,
Bourns will transfer the Model SRN4018A Semi-shielded Inductor Series to an End of Product Life status on
November 15, 2021. A lack of sales volume and diminishing demand necessitates this action.
The Model SRN4018TA Semi-shielded Inductor Series is the recommended replacement for the discontinued
series. The form, fit and function of the suggested replacement model series are not identical to the obsolete
model series. However, the specifications of the suggested replacement Model SRN4018TA series are likely to be
substitutable in typical applications. Please refer to Bourns’ data sheets for more information. The discontinued
part numbers and their recommended replacement part numbers can be found in the table below
Obsolete
Part Number
Recommended
Replacement Part Number
Obsolete
Part Number
Recommended
Replacement Part Number
SRN4018A-R82Y no replacement SRN4018A-100M
SRN4018TA-100M
SRN4018A-1R0Y
SRN4018TA-1R0M SRN4018A-150M SRN4018TA-150M
SRN4018A-1R2Y
SRN4018TA-1R2M SRN4018A-220M SRN4018TA-220M
SRN4018A-1R5Y
SRN4018TA-1R5M SRN4018A-330M SRN4018TA-330M
SRN4018A-2R2M
SRN4018TA-2R2M SRN4018A-470M SRN4018TA-470M
SRN4018A-2R7M no replacement SRN4018A-680M
SRN4018TA-680M
SRN4018A-3R3M
SRN4018TA-3R3M SRN4018A-101M SRN4018TA-101M
SRN4018A-4R7M
SRN4018TA-4R7M SRN4018A-151M SRN4018TA-151M
SRN4018A-6R8M
SRN4018TA-6R8M SRN4018A-221M SRN4018TA-221M
Customers must notify Bourns in writing within 30 days of publication of this notification if they consider
the discontinued product to be sole sourced by Bourns. In such cases, Bourns will work with customers
to negotiate an appropriate End of Product Life purchase for the discontinued products. Orders for these
discontinued products during this End of Product Life transition period will be considered non-cancellable.
Products purchased during this End of Product Life transition period will be considered non-returnable and
will be covered by Bourns’ standard warranty.
Bourns® Model SRN4018A Semi-shielded Inductor Series
to be Discontinued
IC2146
Please plan for the following deadlines:
Last time buy date: November 15, 2021
Last time ship date: May 16, 2022
If you have any questions or need additional information, please feel free to contact
Customer Service/Inside Sales.
Bourns® Model SRN4018A Semi-shielded Inductor Series to be Discontinued
June 4, 2021
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