IHB4EB331K Equivalent & Substitute Parts

Part Overview

The IHB4EB331K is a 330 µH unshielded wirewound inductor manufactured by Vishay Dale, rated for 5.6 A continuous current with a maximum DC resistance of 74 mOhm. This through-hole radial component is designed for applications requiring fixed inductance in power conversion, filtering, and signal conditioning circuits. Finding equivalent substitute parts is necessary to ensure supply chain continuity, optimize procurement costs, and maintain design flexibility across manufacturing batches and supplier availability.

Substiute Parts

IHB4EB331K

Vishay DaleIn Stock: 1033IHB4EB331K Datasheet

Current PartRFQ

1140-331K-RC

Bourns Inc.In Stock: 12171140-331K-RC Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the IHB4EB331K is determined by the following critical parameters:

• Inductance Value: 330 µH (exact match required)
• Current Rating: Minimum 5.6 A (equal or higher acceptable)
• DC Resistance: 74 mOhm Max (equal or lower acceptable)
• Mounting Type: Through Hole (exact match required)
• Package Configuration: Radial, Vertical Cylinder (exact match required)
• Shielding Type: Unshielded (exact match required)

The substitute part 1140-331K-RC meets all substitution criteria with equivalent inductance, higher current rating (6.1 A), matching DC resistance specification, and identical mechanical and electrical packaging characteristics.

Parameter Comparison

Engineering Selection Recommendations

The 1140-331K-RC from Bourns Inc. is a direct functional substitute for the IHB4EB331K. Selection between these parts should be based on:

• Supply Availability: Both parts are in active stock (1003 pcs for IHB4EB331K; 1167 pcs for 1140-331K-RC)
• Compliance Requirements: The 1140-331K-RC carries ROHS3 compliance certification and REACH unaffected status, meeting modern regulatory standards
• Performance Margin: The 1140-331K-RC provides a 0.5 A higher current rating (6.1 A vs. 5.6 A) while maintaining identical DC resistance, offering improved thermal headroom in current-limited applications
• Mechanical Compatibility: Both parts share identical radial, vertical cylinder packaging and through-hole mounting, ensuring direct PCB footprint compatibility

Frequently Asked Questions (FAQ)

Q: Can the 1140-331K-RC replace the IHB4EB331K in existing designs?

A: Yes. Both inductors share identical inductance (330 µH), DC resistance (74 mOhm Max), shielding type (unshielded), and mechanical packaging (radial, vertical cylinder through-hole). The 1140-331K-RC provides equal or superior electrical performance with a higher current rating.

Q: What is the difference between the core types listed?

A: The IHB4EB331K uses a standard wirewound construction, while the 1140-331K-RC uses a drum core wirewound design. Both achieve the same inductance and DC resistance specifications. The drum core construction in the 1140-331K-RC may provide improved thermal characteristics and mechanical stability.

Q: Are there any PCB layout considerations when switching between these parts?

A: No. Both inductors use identical radial, vertical cylinder packaging with through-hole mounting. PCB footprints, lead spacing, and mounting hole requirements are equivalent. No layout modifications are required.

Q: What compliance certifications apply to the substitute part?

A: The 1140-331K-RC is ROHS3 compliant and REACH unaffected. It carries an ECCN classification of EAR99 and HTSUS code 8504.50.8000.

Q: Is the higher current rating of the 1140-331K-RC (6.1 A vs. 5.6 A) significant?

A: The higher current rating provides additional thermal margin and allows operation closer to saturation limits without exceeding design specifications. For applications operating at or near the 5.6 A limit, the 1140-331K-RC offers improved reliability and reduced thermal stress.