H1012 LAN Pulse Transformer Equivalent & Substitute Parts

Part Overview

The H1012 is a Surface Mount LAN Pulse Transformer manufactured by Pulse Electronics with a 1CT:1CT turns ratio configuration. This component is classified as Obsolete, indicating it has been discontinued and is no longer in active production. The H1012NL serves as the direct substitute, offering equivalent electrical and mechanical specifications while maintaining Active product status and improved compliance characteristics.

Substiute Parts

H1012

Pulse ElectronicsIn Stock: 16011H1012 Datasheet

Current PartRFQ

H1012NL

Pulse ElectronicsIn Stock: 2924H1012NL Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The H1012NL qualifies as a direct substitute based on the following matching parameters:

• Identical turns ratio (1CT:1CT)
• Identical mounting type (Surface Mount)
• Identical physical dimensions (1.000" L x 0.390" W / 25.40mm x 9.91mm)
• Identical maximum seated height (0.245" / 6.22mm)
• Identical operating temperature range (0°C ~ 70°C)
• Identical weight (0.11 oz / 3.13 g)
• Identical ECCN and HTSUS classifications

The H1012NL represents an evolution of the H1012 design, transitioning from LAN classification to Isolation and Data Interface (Encapsulated) classification while maintaining full mechanical and electrical compatibility.

Parameter Comparison

Engineering Selection Recommendations

The H1012NL is the appropriate selection for new designs and component replacement applications. The H1012 is Obsolete and should not be specified for new production. The H1012NL provides the following advantages:

• Active product status ensures ongoing availability and manufacturing support
• RoHS Compliant designation meets current environmental and regulatory requirements
• Improved Moisture Sensitivity Level (MSL 3 vs. MSL 4) provides extended handling window (168 hours vs. 72 hours)
• Identical mechanical and electrical specifications ensure direct PCB compatibility without layout modifications
• Tube packaging provides standard component handling and storage

Frequently Asked Questions (FAQ)

Q: Can H1012NL be used as a direct replacement for H1012 on existing PCBs?

A: Yes. The H1012NL maintains identical physical dimensions, mounting type, and electrical specifications (1CT:1CT turns ratio). No PCB layout modifications are required.

Q: What is the difference between H1012 and H1012NL transformer types?

A: The H1012 is classified as LAN type, while the H1012NL is classified as Isolation and Data Interface (Encapsulated). Both maintain identical turns ratio and mechanical specifications.

Q: Why is the H1012 listed as Obsolete?

A: The H1012 has been discontinued by Pulse Electronics. The H1012NL represents the current production equivalent and should be used for all new applications.

Q: What is the significance of the MSL rating difference?

A: H1012NL has MSL 3 (168-hour handling window) compared to H1012 MSL 4 (72-hour handling window). This provides extended storage and handling time before soldering, reducing production risk.

Q: Is the H1012NL RoHS compliant?

A: Yes. The H1012NL is RoHS Compliant, meeting current environmental regulations. The H1012 is RoHS non-compliant.

Q: Are there packaging differences between H1012 and H1012NL?

A: The H1012NL is supplied in Tube packaging. Standard packaging specifications should be confirmed with the supplier for specific procurement requirements.