DST5-24B19 Equivalent & Substitute Parts

Part Overview

The DST5-24B19 is a laminated core power transformer manufactured by Pulse Electronics, rated at 12VA with dual primary and secondary windings. This through-hole mounted component operates at 115V or 230V primary voltage and delivers parallel 12V or series 24V secondary output. The part is currently active in production with 1127 units in stock inventory.

Equivalent and substitute parts are identified when design requirements necessitate alternative sourcing due to supply constraints, procurement lead times, or inventory availability across different manufacturers while maintaining identical electrical and mechanical specifications.

Substiute Parts

DST5-24B19

Pulse ElectronicsIn Stock: 1197DST5-24B19 Datasheet

Current PartRFQ

DST-5-24

Signal TransformerIn Stock: 1872DST-5-24 Datasheet

DirectRFQ

FS24-500

Triad MagneticsIn Stock: 1318FS24-500 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the DST5-24B19 are qualified based on strict equivalence across the following critical parameters:

• Identical power rating: 12VA
• Matching primary voltage options: 115V, 230V
• Matching secondary voltage configuration: Parallel 12V, Series 24V
• Matching output current specifications: Parallel 1A, Series 500mA
• Identical core type: Laminated
• Matching winding configuration: Dual primary, dual secondary
• Identical mounting type: Through Hole
• Matching termination style: PC Pin
• Matching isolation voltage: 2500Vrms

The substitute parts DST-5-24 (Signal Transformer) and FS24-500 (Triad Magnetics) meet all electrical and mechanical requirements for direct substitution. Dimensional variations remain within acceptable tolerances for through-hole mounting applications.

Parameter Comparison

Engineering Selection Recommendations

All three transformer models satisfy the electrical and mechanical requirements for direct substitution. Selection between DST5-24B19, DST-5-24, and FS24-500 may be based on:

• Inventory availability and procurement lead times
• Packaging requirements (DST5-24B19 supplied in standard packaging; DST-5-24 and FS24-500 supplied in box packaging)
• RoHS compliance level (DST5-24B19 meets RoHS Compliant; DST-5-24 and FS24-500 meet ROHS3 Compliant)
• Dimensional tolerance requirements for PCB layout (all three units fall within acceptable through-hole mounting tolerances)

All parts maintain identical isolation voltage, winding configuration, and termination specifications required for circuit functionality.

Frequently Asked Questions (FAQ)

Q: Can DST-5-24 or FS24-500 be used as direct replacements for DST5-24B19?

A: Yes. Both substitute parts meet all electrical specifications including power rating, voltage levels, current ratings, winding configuration, and isolation voltage. Dimensional variations are within acceptable tolerances for through-hole PCB mounting.

Q: Are there differences in RoHS compliance between these parts?

A: DST5-24B19 is RoHS Compliant. DST-5-24 and FS24-500 are ROHS3 Compliant. Both compliance levels satisfy environmental and regulatory requirements; ROHS3 represents a more recent certification standard.

Q: What are the dimensional differences, and do they affect PCB layout?

A: Length varies from 47.24mm to 47.80mm, width from 39.60mm to 39.67mm, and height from 36.50mm to 36.90mm. These variations are within standard manufacturing tolerances for through-hole transformers and do not require PCB redesign.

Q: Do all three parts have identical electrical performance?

A: Yes. All three transformers deliver identical primary voltage options (115V, 230V), secondary voltage configurations (parallel 12V or series 24V), output current ratings (parallel 1A or series 500mA), and isolation voltage (2500Vrms).

Q: What packaging differences exist between these parts?

A: DST5-24B19 uses standard packaging. DST-5-24 and FS24-500 are supplied in box packaging. Packaging selection does not affect electrical or mechanical compatibility.