KEMET B-01-A1 Ferrite Bead Equivalent & Substitute Parts

Part Overview

The KEMET B-01-A1 is a signal line ferrite bead designed for electromagnetic interference (EMI) suppression in electronic circuits. This axial, radial bend component operates at 2 Ohms impedance at 1 MHz with a maximum current rating of 5A. The part is currently active in production and widely available in inventory. Substitute parts may be required due to inventory constraints, lead time considerations, or specific application requirements within the allowed electrical and mechanical parameters.

Substiute Parts

B-01-A1

KEMETIn Stock: 988B-01-A1 Datasheet

Current PartRFQ

B-01-A2

KEMETIn Stock: 1918B-01-A2 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the KEMET B-01-A1 is permissible with the KEMET B-01-A2 based on the following critical parameters that remain constant across both parts:

• Impedance Specification: Both parts maintain 2 Ohms @ 1 MHz
• Current Rating: Both rated for maximum 5A
• Filter Type: Both are signal line ferrite beads
• Number of Lines: Both feature 1 signal line
• Package Configuration: Both use Axial, Radial Bend package
• Mounting Type: Both are Through Hole mounted
• Height Dimension: Both maintain 0.134" (3.40mm) maximum height
• Operating Temperature Range: Both operate within -20°C ~ 70°C
• Compliance Standards: Both are ROHS3 Compliant and REACH Unaffected

The primary dimensional difference is the length specification, where B-01-A1 measures 0.492" L (12.50mm) and B-01-A2 measures 0.394" L (10.00mm). This variation remains within the mechanical tolerance envelope for the BEAD L series and does not affect electrical performance or functional compatibility.

Parameter Comparison

Engineering Selection Recommendations

Both the KEMET B-01-A1 and B-01-A2 are active production components with full ROHS3 compliance and REACH unaffected status, making them suitable for applications requiring regulatory adherence. Selection between these parts should be based on:

1. Inventory Availability: B-01-A2 currently maintains higher inventory levels (1901 Pcs) compared to B-01-A1 (893 Pcs), making it preferable for high-volume procurement or time-sensitive applications.

2. Dimensional Constraints: The B-01-A2 features a shorter length (0.394" vs 0.492"), which may be advantageous in space-constrained PCB layouts while maintaining identical electrical performance and current handling capacity.

3. Electrical Equivalence: Both parts deliver identical impedance, current rating, and frequency response characteristics, ensuring direct functional substitution without circuit redesign.

4. Compliance Continuity: Both parts maintain identical regulatory compliance certifications, eliminating compliance-related substitution barriers.

Frequently Asked Questions (FAQ)

Q: Can B-01-A2 be used as a direct replacement for B-01-A1 in existing designs?

A: Yes. Both parts maintain identical electrical specifications (2 Ohms @ 1 MHz, 5A maximum current), operating temperature range, and package configuration. The length difference (0.492" vs 0.394") does not affect electrical performance or functional compatibility.

Q: What is the primary difference between B-01-A1 and B-01-A2?

A: The primary difference is the axial length dimension. B-01-A1 measures 0.492" L (12.50mm), while B-01-A2 measures 0.394" L (10.00mm). Both maintain the same 0.134" (3.40mm) diameter and all electrical characteristics.

Q: Are there any compliance or certification differences between these parts?

A: No. Both parts are ROHS3 Compliant, REACH Unaffected, and carry identical regulatory status. No compliance barriers exist for substitution.

Q: Which part should be selected for new designs?

A: Selection should be based on PCB layout requirements and inventory availability. B-01-A2 offers a more compact length profile and higher current inventory levels, while B-01-A1 provides a longer axial dimension if required by specific board layout constraints.

Q: Do these parts require any special handling or mounting considerations?

A: Both parts are Through Hole mounted ferrite beads with identical mounting requirements. Standard PCB assembly processes apply to both components without modification.

Q: What is the operating temperature range for both parts?

A: Both B-01-A1 and B-01-A2 operate within the range of -20°C to 70°C, with identical thermal performance characteristics.