DPC-34-125B22 Equivalent & Substitute Parts

Part Overview

The DPC-34-125B22 is a laminated core power transformer manufactured by Pulse Electronics, rated at 4.4VA with dual primary and secondary windings. This through-hole mounted component is designed for PC pin termination and supports both 115V and 230V primary inputs with configurable secondary outputs of 17V (parallel) or 34V (series).

The DPC-34-125B22 carries an obsolete product status. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production or repair requirements for legacy systems utilizing this transformer specification.

Substiute Parts

DPC-34-125B22

Pulse ElectronicsIn Stock: 874DPC-34-125B22 Datasheet

Current PartRFQ

DPC-34-125

Signal TransformerIn Stock: 1066DPC-34-125 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the DPC-34-125B22 is determined by strict equivalence across the following critical parameters:

• Power rating: 4.4VA
• Core type: Laminated
• Primary voltage configuration: Dual 115V/230V
• Secondary voltage outputs: Parallel 17V and Series 34V
• Output current capacity: Parallel 250mA, Series 125mA
• Winding configuration: Dual primary, dual secondary
• Mounting and termination: Through hole with PC pin termination
• Isolation voltage: 1500Vrms
• Physical dimensions: Within tolerance of 41.28mm L × 31.75mm W × 34.93mm H (seated)

The DPC-34-125 from Signal Transformer meets all specified electrical and mechanical parameters, making it a direct functional equivalent for applications requiring this transformer specification.

Parameter Comparison

Engineering Selection Recommendations

The DPC-34-125 from Signal Transformer is the direct equivalent substitute for the obsolete DPC-34-125B22. Selection of this substitute is supported by:

• Identical electrical specifications across all primary and secondary voltage and current parameters
• Matching core type, winding configuration, and isolation voltage
• Equivalent physical dimensions within manufacturing tolerance
• Active product status ensuring ongoing availability and supply chain support
• ROHS3 compliance exceeding the RoHS compliance of the original part
• Identical termination and mounting characteristics for direct PCB integration

The dimensional variance of 0.02mm in length and 0.05mm in width, combined with 0.01mm difference in seated height, falls within standard manufacturing tolerances and presents no functional or mechanical incompatibility.

Frequently Asked Questions (FAQ)

Q: Can the DPC-34-125 be used as a direct replacement for the DPC-34-125B22?

A: Yes. The DPC-34-125 meets all electrical and mechanical specifications of the DPC-34-125B22, including power rating, voltage configuration, current capacity, winding arrangement, isolation voltage, and physical dimensions. Direct substitution is supported without circuit modification.

Q: What is the significance of the product status difference?

A: The DPC-34-125B22 is obsolete, meaning Pulse Electronics no longer manufactures or supports this part. The DPC-34-125 from Signal Transformer carries active status, ensuring continued availability, technical support, and compliance with current regulatory standards.

Q: Are there any compliance differences between these parts?

A: Both parts are RoHS compliant and REACH unaffected. The DPC-34-125 carries ROHS3 certification, which represents a more current compliance standard than the RoHS compliance of the original part. Both meet the required isolation voltage and electrical safety specifications.

Q: Do the physical dimension differences affect PCB layout?

A: No. The dimensional variations (0.02mm in length, 0.05mm in width, 0.01mm in height) are within standard manufacturing tolerances and do not require PCB redesign. Through-hole mounting and PC pin termination remain identical.

Q: What packaging is available for the substitute part?

A: The DPC-34-125 is supplied in box packaging. Verify packaging requirements for your application, as the original DPC-34-125B22 packaging specification was not provided in the technical data.