Hammond Manufacturing 632B Pulse Transformer Equivalent & Substitute Parts

Part Overview

The Hammond Manufacturing 632B is a 1mH SCR and Triac Trigger encapsulated pulse transformer with a 2:1:1 turns ratio, designed for through-hole mounting applications. This component is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and component procurement.

Substiute Parts

632B

Hammond ManufacturingIn Stock: 755632B Datasheet

Current PartRFQ

77203HVC

Murata Power Solutions Inc.In Stock: 105477203HVC Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 632B is determined by the following critical parameters:

• Transformer Type: SCR and Triac Trigger (Encapsulated)
• Inductance: 1mH
• Turns Ratio: 2:1:1
• Mounting Type: Through Hole
• RoHS Compliance: ROHS3 Compliant

The Murata Power Solutions Inc. 77203HVC meets all substitution criteria. Both components share identical inductance, turns ratio, transformer type classification, mounting methodology, and regulatory compliance status. Physical dimensions are within acceptable tolerance for through-hole PCB applications. The 77203HVC is classified as active product status, providing long-term availability and supply chain continuity.

Parameter Comparison

Engineering Selection Recommendations

The Murata Power Solutions Inc. 77203HVC is the direct functional equivalent for the obsolete Hammond Manufacturing 632B. Selection of the 77203HVC is supported by:

• Identical electrical specifications (1mH inductance, 2:1:1 turns ratio)
• Matching transformer classification for SCR and Triac trigger applications
• Active product status ensuring current availability and supply chain support
• Equivalent regulatory compliance (ROHS3, REACH Unaffected, EAR99)
• Compatible through-hole mounting with minimal dimensional variance
• Established inventory availability

Frequently Asked Questions (FAQ)

Q: Can the Murata 77203HVC directly replace the Hammond 632B in existing designs?

A: Yes. Both components share identical inductance (1mH), turns ratio (2:1:1), transformer type classification, and mounting methodology. Physical dimensions are within acceptable tolerance for through-hole PCB layouts.

Q: What is the significance of the obsolete status for the Hammond 632B?

A: Obsolete classification indicates the component is no longer manufactured or supported by Hammond Manufacturing. The 77203HVC, classified as active, provides continuity for new procurement and system maintenance.

Q: Are there packaging differences between these components?

A: The Hammond 632B is specified with dash packaging notation, while the Murata 77203HVC is supplied in tube packaging. Both are suitable for through-hole assembly processes.

Q: Do both components meet current regulatory requirements?

A: Yes. Both the Hammond 632B and Murata 77203HVC are ROHS3 compliant, REACH unaffected, and classified under ECCN EAR99 with matching HTSUS codes (8504.31.2000).

Q: What are the dimensional considerations for PCB layout?

A: The Murata 77203HVC dimensions (25.40mm L x 20.30mm W x 12.30mm H) are marginally larger than the Hammond 632B (25.00mm L x 20.00mm W x 13.00mm H). Verify PCB footprint clearance before implementation.