74456233 Equivalent & Substitute Parts

Part Overview

The Würth Elektronik 74456233 is a 330 µH unshielded drum core wirewound inductor rated for 700 mA continuous current with a maximum DC resistance of 1.15Ohm. This component is part of the WE-PD4 series and is actively manufactured. Equivalent and substitute parts are identified when design requirements permit operation within alternative electrical and mechanical specifications while maintaining functional compatibility in surface mount applications.

Substiute Parts

74456233

Würth ElektronikIn Stock: 1836474456233 Datasheet

Current PartRFQ

SDR1005-331KL

Bourns Inc.In Stock: 1498SDR1005-331KL Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 74456233 with the Bourns SDR1005-331KL is determined by the following criteria:

Matching Parameters:

• Inductance value: 330 µH (identical)
• Inductance tolerance: ±10% (identical)
• DC resistance: 1.15Ohm Max (identical)
• Core material: Ferrite (identical)
• Shielding: Unshielded (identical)
• Package dimensions: 12.70mm L x 10.00mm W (identical)
• Operating temperature range: -40°C to 125°C (identical)
• RoHS3 compliance: Both parts compliant
• Mounting type: Surface Mount (identical)

Differing Parameters:

• Current rating: 700 mA (74456233) vs. 550 mA (SDR1005-331KL)
• Saturation current: 800 mA (74456233) vs. 600 mA (SDR1005-331KL)
• Self-resonant frequency: 3.7 MHz (74456233) vs. 4 MHz (SDR1005-331KL)
• Height: 5.30mm (74456233) vs. 5.00mm (SDR1005-331KL)

The SDR1005-331KL is a valid substitute when circuit current requirements do not exceed 550 mA continuous operation.

Parameter Comparison

Engineering Selection Recommendations

Both the 74456233 and SDR1005-331KL are active products with ROHS3 compliance and REACH unaffected status, meeting current regulatory requirements for electronic component manufacturing and distribution.

Selection between these parts is determined by circuit current requirements. The 74456233 supports continuous operation at 700 mA with 800 mA saturation current. The SDR1005-331KL operates at reduced current ratings of 550 mA continuous with 600 mA saturation current.

The SDR1005-331KL provides a 0.30mm height reduction (5.00mm vs. 5.30mm seated height), which may be advantageous in space-constrained applications where PCB clearance is a design consideration.

Frequently Asked Questions (FAQ)

Q: Can the SDR1005-331KL replace the 74456233 in all applications?

A: The SDR1005-331KL is a suitable substitute only when circuit current requirements remain below 550 mA continuous operation. Applications requiring the full 700 mA rating of the 74456233 must use the original part or an equivalent with matching current specifications.

Q: Are the package dimensions identical between these parts?

A: The lateral dimensions are identical at 12.70mm length by 10.00mm width. The seated height differs by 0.30mm, with the SDR1005-331KL measuring 5.00mm maximum versus 5.30mm for the 74456233. Both parts use identical surface mount packaging.

Q: Do both parts meet the same compliance standards?

A: Yes. Both the 74456233 and SDR1005-331KL are ROHS3 compliant, REACH unaffected, and carry MSL 1 (Unlimited) moisture sensitivity ratings. Both operate across the identical temperature range of -40°C to 125°C.

Q: What is the significance of the different self-resonant frequencies?

A: The self-resonant frequency indicates the frequency at which the inductor transitions from inductive to capacitive behavior. The 74456233 exhibits 3.7 MHz self-resonance while the SDR1005-331KL exhibits 4 MHz. This parameter is relevant only in high-frequency applications operating near or above these frequency thresholds.

Q: Are there inventory considerations for these parts?

A: The 74456233 maintains 18,300 pieces in stock. The SDR1005-331KL maintains 1,470 pieces in stock. Availability should be confirmed with your component supplier based on project lead time requirements.