PB0026 Current Sense Transformer 100:1 35A SMD

Part Overview

The PB0026 is a 35 A current sense transformer with a 100:1 turns ratio, designed for invasive current sensing applications across the 50kHz to 500kHz frequency range. This component features a 5.6 mH inductance and surface mount gull wing termination. The PB0026 is classified as obsolete, making identification of suitable alternatives necessary for ongoing design support and procurement planning.

Substiute Parts

PB0026

Pulse ElectronicsIn Stock: 783PB0026 Datasheet

Current PartRFQ

PB0026NL

Pulse ElectronicsIn Stock: 2215PB0026NL Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The PB0026NL qualifies as a direct substitute based on the following critical parameters:

• Current Rating: Both parts rated for 35 A
• Turns Ratio: Both maintain 100:1 primary to secondary ratio
• Frequency Range: Both operate across 50kHz – 500kHz
• Inductance: Both specify 5.6 mH
• Secondary DC Resistance: Both measure 1.4 Ohm
• Mounting Type: Both are surface mount with gull wing termination
• Height: Both seated height maximum is 0.394" (10.00 mm)
• MSL Rating: Both classified as MSL 1 (Unlimited)

The primary difference lies in primary DC resistance (2.8 mOhm vs. 0.42 mOhm) and product status (obsolete vs. active), with the PB0026NL offering improved electrical performance and current availability.

Parameter Comparison

Engineering Selection Recommendations

The PB0026NL is the appropriate substitute for the obsolete PB0026. Both components maintain identical electrical specifications for current rating, turns ratio, frequency range, and inductance. The PB0026NL offers two significant advantages: active product status ensuring ongoing availability, and RoHS compliance for regulatory alignment. The reduced primary DC resistance (0.42 mOhm vs. 2.8 mOhm) in the PB0026NL represents improved electrical performance with lower power dissipation in the primary winding. Both components share identical secondary resistance, mounting configuration, and moisture sensitivity ratings, confirming functional compatibility in existing circuit designs.

Frequently Asked Questions (FAQ)

Q: Can PB0026NL directly replace PB0026 in existing designs?

A: Yes. Both components share identical current rating (35 A), turns ratio (100:1), frequency range (50kHz – 500kHz), inductance (5.6 mH), secondary resistance (1.4 Ohm), and physical mounting specifications. The PB0026NL is the active equivalent.

Q: What is the significance of the primary DC resistance difference?

A: The PB0026NL primary resistance of 0.42 mOhm is lower than the PB0026 at 2.8 mOhm. This represents improved transformer efficiency with reduced primary winding losses and lower heat generation during operation.

Q: Are there packaging differences between these parts?

A: The PB0026 uses standard packaging while the PB0026NL is supplied in tray packaging. Both maintain identical physical dimensions and height specifications for PCB assembly compatibility.

Q: Why is RoHS compliance important for this substitution?

A: RoHS compliance (PB0026NL) ensures the component meets environmental and regulatory requirements for lead-free manufacturing and restricted substance limitations. The obsolete PB0026 is non-compliant, making the PB0026NL the preferred choice for new designs and regulatory adherence.

Q: Are both parts rated for the same moisture sensitivity level?

A: Yes. Both PB0026 and PB0026NL carry MSL 1 (Unlimited) rating, indicating no moisture sensitivity restrictions for storage or handling.