DEM8045Z-220M=P3 Equivalent & Substitute Parts

Part Overview

The DEM8045Z-220M=P3 is a 22 µH shielded drum core wirewound inductor manufactured by Murata Electronics. This surface mount component is rated for 2.4 A continuous current with a maximum DC resistance of 93.6 mOhm and operates across the temperature range of -40°C to 125°C. The part maintains Active product status and carries AEC-Q200 automotive qualification. Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and supply chain continuity while maintaining electrical and mechanical compatibility within specified tolerance parameters.

Substiute Parts

DEM8045Z-220M=P3

Murata ElectronicsIn Stock: 832DEM8045Z-220M=P3 Datasheet

Current PartRFQ

SRN8040HA-220M

Bourns Inc.In Stock: 1800SRN8040HA-220M Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the DEM8045Z-220M=P3 is determined by the following critical parameters:

Primary Substitution Criteria:

• Inductance value: 22 µH (within ±20% tolerance band)
• Current rating: minimum 2.2 A continuous
• DC resistance: maximum 120 mOhm
• Core material: Ferrite
• Mounting type: Surface Mount
• Package classification: Nonstandard
• Footprint dimensions: compatible with 8.00 mm × 8.00 mm × 4.50 mm maximum envelope
• Compliance: AEC-Q200 rated, ROHS3 compliant

Substitution Logic: The SRN8040HA-220M qualifies as an equivalent substitute based on matching inductance value, ferrite core construction, surface mount configuration, and AEC-Q200 automotive qualification. The substitute maintains the same inductance tolerance specification and operates within compatible current and saturation parameters. Dimensional compatibility is confirmed within the specified footprint constraints. Both parts are ROHS3 compliant and carry unlimited moisture sensitivity rating (MSL 1).

Parameter Comparison

Engineering Selection Recommendations

Primary Part Selection: The DEM8045Z-220M=P3 remains the specified component for applications requiring fully shielded drum core construction with maximum current rating of 2.4 A and operating temperature ceiling of 125°C. This part is Active status with full AEC-Q200 automotive qualification and ROHS3 compliance.

Substitute Part Selection: The SRN8040HA-220M (Bourns Inc.) is qualified as an equivalent substitute when the following conditions are met:

• Application current requirement does not exceed 2.2 A continuous
• Semi-shielded EMI containment is acceptable for the circuit design
• Operating temperature requirement does not exceed 150°C upper limit
• Footprint tolerance accommodates 8.15 mm × 7.90 mm × 4.20 mm maximum dimensions
• AEC-Q200 automotive qualification requirement is maintained
• ROHS3 compliance is required

Both parts carry Active product status and unlimited moisture sensitivity rating (MSL 1), supporting long-term supply chain stability. The substitute part offers extended temperature range capability and higher saturation current (3.3 A versus 2.9 A), providing additional design margin in specific applications.

Frequently Asked Questions (FAQ)

Q: Can the SRN8040HA-220M directly replace the DEM8045Z-220M=P3 in all applications?

A: The SRN8040HA-220M qualifies as a substitute when application current does not exceed 2.2 A and semi-shielded construction is acceptable. The substitute maintains identical inductance value, tolerance, core material, and AEC-Q200 qualification. Verify that circuit design does not require the fully shielded drum core configuration of the original part.

Q: What is the difference between shielded and semi-shielded construction?

A: The DEM8045Z-220M=P3 features fully shielded drum core construction, providing maximum EMI containment. The SRN8040HA-220M uses semi-shielded construction, which reduces but does not eliminate external magnetic field radiation. Selection depends on circuit EMI sensitivity requirements.

Q: Are there current rating limitations when substituting?

A: Yes. The DEM8045Z-220M=P3 is rated for 2.4 A continuous current, while the SRN8040HA-220M is rated for 2.2 A. The substitute part must not be used in applications requiring current above 2.2 A. Both parts have saturation current specifications (2.9 A and 3.3 A respectively) that must not be exceeded.

Q: Do both parts meet automotive qualification standards?

A: Yes. Both the DEM8045Z-220M=P3 and SRN8040HA-220M carry AEC-Q200 automotive qualification and ROHS3 compliance, supporting automotive and industrial applications with equivalent reliability standards.

Q: Are the physical dimensions compatible?

A: The parts are dimensionally compatible within standard PCB layout tolerance. The DEM8045Z-220M=P3 measures 8.00 mm × 8.00 mm × 4.50 mm maximum, while the SRN8040HA-220M measures 8.15 mm × 7.90 mm × 4.20 mm maximum. Verify footprint accommodation in your specific PCB design.

Q: What is the DC resistance difference between these parts?

A: The DEM8045Z-220M=P3 has a maximum DC resistance of 93.6 mOhm, while the SRN8040HA-220M has a maximum of 120 mOhm. This 26.4 mOhm difference may affect power dissipation calculations in high-current applications. Calculate I²R losses for your specific current profile.

Q: Can the substitute part operate at higher temperatures?

A: Yes. The SRN8040HA-220M operates from -40°C to 150°C, extending the upper temperature limit by 25°C compared to the DEM8045Z-220M=P3 (-40°C to 125°C). This provides additional thermal margin for applications operating near temperature extremes.