Equivalent & Substitute Parts for Signal Transformer 241-3-16

Part Overview

The Signal Transformer 241-3-16 is a laminated core power transformer rated at 2.4VA with a 115V primary and 16V secondary output. This chassis mount transformer is designed for applications requiring isolated low-voltage power conversion with a center tap configuration. The part is currently active in production with ROHS3 compliance and full inventory availability. Substitute parts may be required due to supply constraints, packaging preferences, or application-specific mounting and termination requirements.

Key Parameters

Parameter	Value
Manufacturer Part Number	241-3-16
Manufacturer	Signal Transformer
Series	Two-4-One™
Product Status	Active
Type	Laminated Core
Voltage - Primary	115V
Voltage - Secondary (Full Load)	16V
Current - Output (Max)	150mA
Power - Max	2.4VA
Mounting Type	Chassis Mount
Center Tap	Yes
Voltage - Isolation	2500Vrms
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts for the 241-3-16 are qualified based on the following critical parameters:

Primary voltage: 115V (single primary winding required for direct substitution)
Secondary voltage: 16V
Maximum output current: 150mA minimum
Power rating: 2.4VA minimum
Mounting type: Chassis Mount
Center tap configuration: Required
Core type: Laminated
Isolation voltage: 2000Vrms minimum
Termination style: Solder and Quick Connect compatible

Two substitute parts meet these criteria with varying electrical and mechanical characteristics. The F3-16 provides identical electrical specifications with different physical dimensions. The 186B16 offers higher power capacity and dual primary voltage capability, making it suitable for applications requiring additional current headroom or multi-voltage input flexibility.

Parameter Comparison

Parameter	241-3-16 (Signal Transformer)	F3-16 (Triad Magnetics)	186B16 (Hammond Manufacturing)
Voltage - Primary	115V	115V	115V, 230V
Voltage - Secondary (Full Load)	16V	16V	16V
Current - Output (Max)	150mA	150mA	400mA
Power - Max	2.4VA	2.4VA	6.4VA
Primary Winding(s)	Single	Single	Dual
Secondary Winding(s)	Single	Single	Single
Center Tap	Yes	Yes	Yes
Type	Laminated Core	Laminated Core	Laminated Core
Mounting Type	Chassis Mount	Chassis Mount	Chassis Mount
Termination Style	Solder, Quick Connect	Solder, Quick Connect - 0.187" (4.7mm)	Solder, Quick Connect
Voltage - Isolation	2500Vrms	2500VAC	2000Vrms
Size / Dimension	52.60mm L x 29.60mm W	41.28mm L x 30.15mm W	60.20mm L x 41.28mm W
Height - Seated (Max)	31.20mm	30.15mm	34.80mm
Weight	0.25 lb (113.4 g)	0.25 lb (113.4 g)	0.45 lb (204.12 g)
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Active	Active	Active

Engineering Selection Recommendations

All three parts maintain active production status and ROHS3 compliance, ensuring regulatory consistency across substitution options.

The F3-16 (Triad Magnetics) provides direct electrical equivalence to the 241-3-16 with identical power rating, current capacity, and isolation voltage. Physical dimensions differ slightly, with the F3-16 offering a more compact footprint (41.28mm L x 30.15mm W versus 52.60mm L x 29.60mm W). This part is suitable for space-constrained applications where the primary and secondary voltage specifications remain fixed at 115V and 16V respectively.

The 186B16 (Hammond Manufacturing) offers higher power capacity (6.4VA versus 2.4VA) and dual primary voltage configuration (115V/230V). The increased current rating of 400mA provides additional design margin for applications with variable load conditions. Physical dimensions are larger (60.20mm L x 41.28mm W), and isolation voltage is rated at 2000Vrms, which remains above minimum substitution criteria. This part is appropriate for applications requiring multi-voltage input capability or where future current demand expansion is anticipated.

Frequently Asked Questions (FAQ)

Q: Can the F3-16 be used as a direct replacement for the 241-3-16?

A: Yes. The F3-16 meets all critical electrical parameters: 115V primary, 16V secondary, 150mA maximum output current, 2.4VA power rating, center tap configuration, and 2500VAC isolation voltage. Physical dimensions differ slightly, requiring verification of mounting clearance in the target application.

Q: What is the primary advantage of the 186B16 over the 241-3-16?

A: The 186B16 provides higher power capacity (6.4VA versus 2.4VA) and dual primary voltage inputs (115V/230V). The 400mA maximum output current provides additional current headroom compared to the 150mA rating of the 241-3-16. These characteristics make the 186B16 suitable for applications requiring multi-voltage operation or higher load capacity.

Q: Are there any isolation voltage differences between these parts?

A: The 241-3-16 and F3-16 are rated at 2500Vrms and 2500VAC respectively. The 186B16 is rated at 2000Vrms. All three parts exceed standard isolation requirements for chassis mount transformer applications.

Q: Do all three parts use the same termination style?

A: All three parts feature Solder and Quick Connect termination. The F3-16 specifies Quick Connect as 0.187" (4.7mm), which is standard for this connector type. Verify connector compatibility with existing harnesses before substitution.

Q: What packaging options are available?

A: The 241-3-16 is supplied in Bulk packaging. The F3-16 is supplied in Bulk packaging. The 186B16 is supplied in Box packaging. Packaging selection may affect procurement lead times and minimum order quantities.

Q: Are all parts RoHS compliant?

A: Yes. The 241-3-16, F3-16, and 186B16 are all ROHS3 compliant, ensuring regulatory consistency for applications subject to RoHS requirements.

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