Equivalent & Substitute Parts for Würth Elektronik 7445820

Part Overview

The Würth Elektronik 7445820 is a 100 µH unshielded drum core wirewound inductor rated for 1.8 A continuous current with a maximum DC resistance of 190 mOhm. This surface mount component operates across the temperature range of -40°C to 125°C and is ROHS3 compliant. The part is currently active in production with 3466 units in stock. Substitute parts are identified when equivalent electrical and mechanical specifications are available from alternative manufacturers, enabling procurement flexibility and supply chain continuity.

Substiute Parts

7445820

Würth ElektronikIn Stock: 35387445820 Datasheet

Current PartRFQ

SDR1806-101KL

Bourns Inc.In Stock: 1876SDR1806-101KL Datasheet

DirectRFQ

P0250.104NLT

Pulse ElectronicsIn Stock: 3437P0250.104NLT Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 7445820 are qualified based on the following critical parameters:

• Inductance value of 100 µH at 100 kHz test frequency
• Current rating of 1.7 A or higher
• DC resistance maximum of 190 mOhm
• Unshielded ferrite or wirewound construction
• Surface mount package with nonstandard case dimensions
• Operating temperature range of -40°C to 125°C or wider
• ROHS3 compliance and REACH unaffected status

The identified substitutes meet these core electrical and mechanical requirements, enabling direct replacement in applications where the main part is unavailable.

Parameter Comparison

Engineering Selection Recommendations

All three parts maintain active product status and full ROHS3 compliance with REACH unaffected designation. The Bourns SDR1806-101KL provides tighter inductance tolerance at ±10% compared to the main part's ±20%, with a 0.1 A lower current rating. The Pulse Electronics P0250.104NLT matches the 1.8 A current rating of the main part and extends the operating temperature range to 130°C. Physical dimensions vary slightly across all three parts, with the Pulse Electronics option being marginally larger in height. Selection should be based on specific application requirements regarding tolerance, current margin, and thermal operating range.

Frequently Asked Questions (FAQ)

Q: Can the Bourns SDR1806-101KL be used as a direct replacement for the Würth Elektronik 7445820?

A: The Bourns part meets the core electrical specifications with 100 µH inductance, 190 mOhm maximum DC resistance, and unshielded ferrite drum core construction. The 1.7 A current rating is 0.1 A lower than the main part. Substitution is valid when the application current requirement does not exceed 1.7 A and the tighter ±10% tolerance is acceptable.

Q: What are the physical dimension differences between these parts?

A: The Würth Elektronik 7445820 measures 18.54 mm L × 15.24 mm W × 7.11 mm H. The Bourns SDR1806-101KL is 18.30 mm L × 14.00 mm W × 6.90 mm H. The Pulse Electronics P0250.104NLT is 18.62 mm L × 15.14 mm W × 7.36 mm H. All three fit nonstandard surface mount packages with minimal dimensional variation suitable for standard PCB layouts.

Q: Are there packaging format differences that affect procurement?

A: The Würth Elektronik and Bourns parts are supplied in Tape & Reel (TR) format. The Pulse Electronics part is available in Cut Tape (CT) and Digi-Reel® format. Packaging selection depends on assembly line requirements and minimum order quantities.

Q: Which substitute part offers the widest operating temperature range?

A: The Pulse Electronics P0250.104NLT operates from -40°C to 130°C, extending 5°C above the main part and Bourns substitute. This extended range may be beneficial for applications requiring higher thermal margins.

Q: Do all parts meet the same compliance standards?

A: All three parts are ROHS3 compliant, REACH unaffected, and classified as EAR99 with HTSUS code 8504.50.4000. Moisture sensitivity level is 1 (Unlimited) for all parts, indicating no special moisture handling requirements.