PE-51688 Equivalent & Substitute Parts Reference

Part Overview

The PE-51688 is a fixed inductor rated at 80 mH with a through-hole mounting configuration, designed for applications requiring current sensing transformation across the 20 kHz to 200 kHz frequency range. This non-invasive solid core component is actively manufactured by Pulse Electronics and maintains full RoHS3 compliance with unlimited moisture sensitivity rating. Substitute parts are identified to provide equivalent functional performance when the primary part is unavailable or when specific application requirements necessitate alternative electrical characteristics.

Substiute Parts

PE-51688

Pulse ElectronicsIn Stock: 1139PE-51688 Datasheet

Current PartRFQ

PE-51688NL

Pulse ElectronicsIn Stock: 2282PE-51688NL Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The PE-51688NL qualifies as a direct substitute based on the following alignment of critical parameters:

• Inductance Match: Both parts specify 80 mH inductance value
• Frequency Range Alignment: Both operate across 20 kHz – 200 kHz
• Mounting Configuration: Both utilize through-hole mounting with identical physical footprint (0.670" L × 0.390" W, 20.32 mm max height)
• Termination Compatibility: Both employ PC pin termination style
• Compliance Equivalence: Both maintain RoHS compliance and unlimited MSL rating
• Active Status: Both parts are actively manufactured

The PE-51688NL differs in transformer type classification (invasive versus non-invasive) and includes specified current rating (20 A) and DC resistance parameters (200 Ohm primary, 4.5 Ohm secondary) not provided for the main part. These differences reflect functional enhancements rather than incompatibilities.

Parameter Comparison

Engineering Selection Recommendations

Both PE-51688 and PE-51688NL maintain active product status with full regulatory compliance. The PE-51688NL provides documented current rating and DC resistance specifications, offering additional design margin data for applications requiring explicit electrical parameter verification. Selection between these parts depends on circuit requirements for invasive versus non-invasive measurement topology and whether specified current and resistance parameters are required for design validation. Both parts satisfy identical physical and frequency domain constraints for through-hole PCB integration.

Frequently Asked Questions (FAQ)

Q: Can PE-51688NL replace PE-51688 in existing designs? A: Yes. Both parts share identical inductance (80 mH), frequency range (20 kHz – 200 kHz), physical footprint, and through-hole mounting configuration. The primary difference is transformer type classification and the availability of current and resistance specifications in the PE-51688NL.

Q: What is the difference between non-invasive and invasive transformer types? A: Non-invasive (solid core) transformers do not require circuit interruption for installation. Invasive transformers require the primary circuit to pass through the transformer core. Circuit topology determines which type is appropriate.

Q: Are the physical dimensions identical? A: Yes. Both parts measure 0.670" L × 0.390" W (17.01 mm × 9.90 mm) with a maximum seated height of 0.800" (20.32 mm), ensuring identical PCB footprint compatibility.

Q: Do both parts meet RoHS requirements? A: Yes. PE-51688 is RoHS3 compliant and PE-51688NL is RoHS compliant. Both satisfy regulatory requirements for restricted substance elimination.

Q: What packaging is available? A: PE-51688 is supplied in standard packaging. PE-51688NL is supplied in tray packaging. Verify packaging requirements with procurement specifications.

Q: Are both parts actively manufactured? A: Yes. Both PE-51688 and PE-51688NL maintain active product status with Pulse Electronics.