IMS05WDST6R8K40 Equivalent & Substitute Parts

Part Overview

The IMS05WDST6R8K40 is a 6.8 µH shielded inductor manufactured by Vishay Dale, designed for through-hole applications requiring fixed inductance with moderate current handling. This axial component operates at 680 mA maximum current with a DC resistance of 680 mOhm. The part belongs to the IMS-5WD-40 series and is currently available with 678 pieces in new original stock.

Substitute parts are identified when equivalent inductance values, compatible current ratings, and acceptable DC resistance specifications align within the electrical and mechanical constraints of the application.

Substiute Parts

IMS05WDST6R8K40

Vishay DaleIn Stock: 690IMS05WDST6R8K40 Datasheet

Current PartRFQ

IMS5SWDBH6R8J65

Vishay DaleIn Stock: 1178IMS5SWDBH6R8J65 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the IMS05WDST6R8K40 is determined by the following criteria:

• Inductance value must be 6.8 µH
• Package type must be through-hole axial configuration
• Shielding characteristic must be maintained
• Current rating must be sufficient for the application (minimum 500 mA acceptable for reduced-stress operation)
• DC resistance must not exceed specifications that would cause unacceptable power dissipation

The identified substitute part IMS5SWDBH6R8J65 maintains the core inductance specification and shielded axial package format. While the current rating is reduced to 500 mA and DC resistance increases to 1.02 Ohm, these parameters remain within acceptable substitution boundaries for applications not requiring the full 680 mA rating.

Parameter Comparison

Engineering Selection Recommendations

Selection between the IMS05WDST6R8K40 and IMS5SWDBH6R8J65 depends on circuit current requirements and DC resistance tolerance:

Use the IMS05WDST6R8K40 when the application requires the full 680 mA current capacity and lower DC resistance of 680 mOhm is critical for minimizing power dissipation.

Use the IMS5SWDBH6R8J65 when circuit current does not exceed 500 mA and the increased DC resistance of 1.02 Ohm is acceptable for the application. This substitute offers higher stock availability (1118 pieces versus 678 pieces).

Both parts maintain identical 6.8 µH inductance and shielded through-hole axial package configuration, ensuring mechanical and electrical compatibility within their respective current and resistance specifications.

Frequently Asked Questions (FAQ)

Q: Can IMS5SWDBH6R8J65 replace IMS05WDST6R8K40 in all applications?

A: No. The substitute part is suitable only for applications where circuit current does not exceed 500 mA. If your design requires the full 680 mA rating, the main part IMS05WDST6R8K40 must be used.

Q: What is the impact of the increased DC resistance in the substitute part?

A: The IMS5SWDBH6R8J65 has 1.02 Ohm DC resistance compared to 680 mOhm in the main part. This 50% increase results in higher power dissipation. Calculate power loss using P = I²R to determine if this is acceptable for your application.

Q: Are both parts physically compatible with the same PCB footprint?

A: Yes. Both parts are through-hole axial components from Vishay Dale and maintain compatible package dimensions for standard inductor footprints.

Q: What is the difference between "Shielded" and "Shielded Molded" construction?

A: Both provide electromagnetic shielding. The molded variant in IMS5SWDBH6R8J65 uses an encapsulation process that may offer improved mechanical protection and environmental resistance compared to the standard shielded construction of IMS05WDST6R8K40.

Q: Which part should I choose if both meet my current requirements?

A: If your circuit current is 500 mA or below and DC resistance tolerance permits 1.02 Ohm, the IMS5SWDBH6R8J65 offers higher stock availability (1118 pieces). Otherwise, select based on your specific current and resistance requirements.