H1112 Pulse Electronics Isolation Transformer - Equivalent & Substitute Parts

Part Overview

The H1112 is an encapsulated isolation and data interface pulse transformer manufactured by Pulse Electronics, configured with a 1CT:1CT turns ratio for surface mount applications. This component is classified as obsolete, making identification of active equivalent parts essential for ongoing production and design continuity. The H1112NL represents the direct active substitute, maintaining identical electrical and mechanical specifications while offering improved compliance status.

Substiute Parts

H1112

Pulse ElectronicsIn Stock: 2361H1112 Datasheet

Current PartRFQ

H1112NL

Pulse ElectronicsIn Stock: 2506H1112NL Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The H1112NL qualifies as a direct substitute for the H1112 based on the following critical parameters:

• Transformer Type: Both parts are Isolation and Data Interface (Encapsulated) configurations
• Turns Ratio: Identical 1CT:1CT primary to secondary ratio
• Mounting Type: Both are surface mount components
• Physical Dimensions: Matching footprint (0.583" L x 0.460" W) and height (0.202" max seated height)
• Operating Temperature: Identical range of 0°C ~ 70°C
• Moisture Sensitivity Level: Both rated MSL 3 (168 Hours)

The substitution is driven by the obsolete status of the H1112 and the availability of the H1112NL as an active product with equivalent form, fit, and function.

Parameter Comparison

Engineering Selection Recommendations

The H1112NL is the appropriate selection for new designs and production continuity applications. The substitute maintains full electrical and mechanical compatibility with the original H1112 specification. The H1112NL offers the additional advantage of ROHS3 compliance, addressing regulatory requirements that may apply to end-use applications. Both parts share identical REACH and ECCN classifications, ensuring consistent supply chain documentation and export compliance handling.

Frequently Asked Questions (FAQ)

Q: Can H1112NL be used as a direct replacement for H1112 in existing designs?

A: Yes. The H1112NL maintains identical electrical specifications (1CT:1CT turns ratio), physical dimensions (0.583" L x 0.460" W, 0.202" max height), operating temperature range (0°C ~ 70°C), and moisture sensitivity level (MSL 3). No circuit redesign or PCB layout modification is required.

Q: What is the primary difference between H1112 and H1112NL?

A: The H1112NL is the active production equivalent of the obsolete H1112. The key difference is RoHS compliance status: H1112NL is ROHS3 compliant, while H1112 is non-compliant. Both parts are functionally and mechanically identical.

Q: Are there packaging differences between these parts?

A: The H1112NL is supplied in Tube packaging. The original H1112 packaging specification was not provided. Verify packaging requirements for your assembly process.

Q: Do both parts have the same moisture sensitivity requirements?

A: Yes. Both H1112 and H1112NL are rated MSL 3 (168 Hours), requiring identical handling, storage, and reflow procedures.

Q: Are export or compliance considerations different between these parts?

A: Both parts share identical ECCN (EAR99), HTSUS (8504.31.2000), and REACH classifications. No additional compliance documentation changes are required when substituting H1112NL for H1112.