Würth Elektronik 7445630 Equivalent & Substitute Parts

Part Overview

The Würth Elektronik 7445630 is a 1 mH unshielded drum core wirewound inductor rated for 400 mA continuous current with a maximum DC resistance of 3.9 Ohm. This surface mount component operates across the temperature range of -40°C to 125°C and is part of the WE-PD4 series. The part is currently active in production and ROHS3 compliant. Substitute parts are identified when equivalent electrical and mechanical specifications are available from alternative manufacturers, enabling procurement flexibility and supply chain continuity.

Substiute Parts

7445630

Würth ElektronikIn Stock: 313947445630 Datasheet

Current PartRFQ

SDR1005-102KL

Bourns Inc.In Stock: 20941SDR1005-102KL Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The Bourns Inc. SDR1005-102KL is identified as a direct substitute based on the following alignment of critical electrical and mechanical parameters:

Matching parameters: 1 mH inductance value, ±10% tolerance, 3.9 Ohm maximum DC resistance, ferrite core material, unshielded configuration, surface mount technology, identical physical dimensions (12.70mm x 10.00mm), and operating temperature range of -40°C to 125°C.

The SDR1005-102KL operates at a reduced current rating of 300 mA compared to the 7445630's 400 mA rating. This represents a functional limitation that must be evaluated against application requirements. Both parts maintain ROHS3 compliance and unlimited moisture sensitivity level (MSL 1).

Parameter Comparison

Engineering Selection Recommendations

Selection between the Würth Elektronik 7445630 and Bourns SDR1005-102KL is determined by application current requirements. The 7445630 supports continuous operation at 400 mA with saturation current of 520 mA, while the SDR1005-102KL is rated for 300 mA continuous with 350 mA saturation current. Both parts maintain identical inductance, tolerance, DC resistance, and core material specifications.

Both components are ROHS3 compliant and carry unlimited moisture sensitivity rating (MSL 1), indicating no special handling requirements during storage or assembly. The SDR1005-102KL features a slightly lower maximum seated height (5.00 mm versus 5.30 mm), which may provide a marginal advantage in space-constrained applications.

Frequently Asked Questions (FAQ)

Q: Can the Bourns SDR1005-102KL replace the Würth Elektronik 7445630 in all applications?

A: Substitution is valid only when application current requirements do not exceed 300 mA continuous operation. The SDR1005-102KL's lower current rating (300 mA versus 400 mA) and saturation current (350 mA versus 520 mA) must be verified against circuit specifications before implementation.

Q: Are the physical dimensions identical between these parts?

A: The lateral dimensions are identical at 12.70mm length by 10.00mm width. The SDR1005-102KL has a maximum seated height of 5.00 mm compared to 5.30 mm for the 7445630. Both parts use nonstandard packaging and are surface mount compatible.

Q: Do both parts require special handling during assembly?

A: No. Both components carry Moisture Sensitivity Level 1 (Unlimited), indicating no moisture-related handling restrictions during storage, transport, or assembly processes.

Q: What is the primary electrical difference between these inductors?

A: The inductance value (1 mH), tolerance (±10%), and DC resistance (3.9 Ohm max) are identical. The primary difference is current rating capacity: the 7445630 supports 400 mA continuous while the SDR1005-102KL supports 300 mA continuous operation.

Q: Are both parts compliant with current environmental regulations?

A: Yes. Both the Würth Elektronik 7445630 and Bourns SDR1005-102KL are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements.