Equivalent & Substitute Parts for Signal Transformer 241-5-20

Part Overview

The Signal Transformer 241-5-20 is a laminated core power transformer rated at 12VA with a single primary winding (115V) and single secondary winding (20V) at 600mA maximum output current. This chassis mount transformer features a center tap and solder/quick connect termination. The part is currently active in production with 1015 units in stock inventory.

Equivalent and substitute parts are identified when component availability changes, manufacturing discontinuation occurs, or design flexibility permits selection from qualified alternatives that meet the same electrical and mechanical specifications.

Substiute Parts

241-5-20

Signal TransformerIn Stock: 1079241-5-20 Datasheet

Current PartRFQ

186D20

Hammond ManufacturingIn Stock: 820186D20 Datasheet

DirectRFQ

F5-20

Triad MagneticsIn Stock: 951F5-20 Datasheet

DirectRFQ

187C20

Hammond ManufacturingIn Stock: 1163187C20 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 241-5-20 are classified based on electrical parameter compatibility and mechanical fit requirements:

Direct Electrical Equivalents (Same Rating): Parts F5-20 (Triad Magnetics) and 187C20 (Hammond Manufacturing) maintain identical electrical specifications: 115V primary, 20V secondary, 600mA output, 12VA power rating, single primary and secondary windings with center tap, and 2500Vrms isolation (or equivalent 2000Vrms). These parts are interchangeable in applications where the 241-5-20 is specified.

Higher Capacity Alternative: Part 186D20 (Hammond Manufacturing) provides increased power capacity (30VA) and output current (1.5A) with dual primary winding capability (115V/230V). This part exceeds the electrical requirements of the 241-5-20 and may be used in applications requiring higher power headroom or dual voltage input flexibility, though it represents an upgrade rather than a direct equivalent.

Substitution eligibility is determined by:

• Matching secondary voltage output (20V)
• Meeting or exceeding current output capacity (600mA minimum)
• Identical center tap configuration
• Chassis mount form factor
• Compatible termination style (Solder, Quick Connect)
• ROHS3 compliance and equivalent isolation voltage

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement: Parts F5-20 and 187C20 are functionally equivalent to the 241-5-20. Both maintain identical electrical ratings and center tap configuration. Selection between these three parts should be based on availability, packaging requirements (F5-20 is supplied in bulk; 241-5-20 and 187C20 in box packaging), and physical dimensions if space constraints exist.

For Upgraded Capacity: Part 186D20 is suitable when application requirements permit higher power capacity (30VA vs. 12VA) or when dual voltage input capability (115V/230V) is beneficial. The 186D20 is not a direct equivalent but represents a higher-capacity alternative within the same product family.

Compliance Consideration: All four parts maintain ROHS3 compliance and REACH unaffected status, meeting current regulatory requirements. Isolation voltage specifications (2500Vrms for 241-5-20 and F5-20; 2000Vrms for Hammond parts) are equivalent for standard industrial applications.

Frequently Asked Questions (FAQ)

Q: Can F5-20 replace 241-5-20 in all applications? A: Yes. The F5-20 maintains identical electrical specifications (115V primary, 20V secondary, 600mA output, 12VA rating) and center tap configuration. Physical dimensions are nearly identical (71.42mm L x 34.93mm W vs. 71.40mm L x 36.30mm W). Verify termination connector compatibility with your circuit board layout, as F5-20 specifies 0.187" (4.7mm) quick connect terminals.

Q: What is the difference between 187C20 and 241-5-20? A: Both parts are electrically identical (115V primary, 20V secondary, 600mA, 12VA, center tap). The 187C20 is manufactured by Hammond (Series 187) while 241-5-20 is Signal Transformer (Series Two-4-One™). Physical dimensions differ slightly (187C20: 71.37mm L x 43.82mm W vs. 241-5-20: 71.40mm L x 36.30mm W). Isolation voltage is 2000Vrms (187C20) versus 2500Vrms (241-5-20), both acceptable for standard applications.

Q: When should 186D20 be used instead of 241-5-20? A: The 186D20 is a higher-capacity alternative (30VA, 1.5A output) with dual primary winding (115V/230V). Use 186D20 when your application requires higher power capacity, dual voltage input flexibility, or when design margin for future load increases is necessary. The 186D20 is not a direct equivalent but a compatible upgrade.

Q: Are there packaging differences between these parts? A: Yes. The 241-5-20 and 187C20 are supplied in box packaging. The F5-20 is supplied in bulk packaging. Select based on your procurement and inventory management requirements.

Q: Do all substitute parts have the same isolation voltage? A: No. The 241-5-20 and F5-20 specify 2500Vrms isolation. The Hammond parts (187C20 and 186D20) specify 2000Vrms isolation. Both ratings are equivalent for standard industrial transformer applications and meet regulatory requirements.