FD5-36 Equivalent & Substitute Parts Reference

Part Overview

The FD5-36 is a laminated core power transformer manufactured by Triad Magnetics, rated for 12VA maximum power with dual primary windings (115V/230V) and a single center-tapped secondary winding (36V, 350mA output). This chassis-mount transformer is designed for applications requiring isolated AC power conversion with flexible input voltage selection. The part maintains Active product status with full RoHS3 compliance and REACH unaffected designation. Equivalent substitute parts are identified based on matching electrical specifications, mechanical compatibility, and regulatory compliance to support procurement flexibility and supply chain continuity.

Key Parameters

Parameter	Specification
Power Rating (Max)	12VA
Primary Voltage	115V, 230V (Dual Winding)
Secondary Voltage (Full Load)	36V
Secondary Current (Max)	350mA
Core Type	Laminated
Secondary Configuration	Single Winding with Center Tap
Mounting Type	Chassis Mount
Termination Style	Solder, Quick Connect - 0.187" (4.7mm)
Isolation Voltage	2500VAC
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts for the FD5-36 are identified through strict electrical and mechanical parameter matching. The substitution criteria are based on the following key parameters that must remain constant:

Power Rating: 12VA maximum
Primary Voltage Configuration: Dual winding supporting 115V and 230V
Secondary Voltage: 36V at full load
Secondary Current Capacity: 350mA maximum output
Winding Configuration: Single secondary with center tap
Core Type: Laminated construction
Mounting Interface: Chassis mount form factor
Termination Compatibility: Solder and Quick Connect 0.187" terminals
Isolation Voltage: 2500VAC minimum
Regulatory Compliance: RoHS3 compliant, REACH unaffected

The DP-241-5-36 from Signal Transformer meets all specified electrical parameters and mechanical compatibility requirements, qualifying it as a direct equivalent substitute.

Parameter Comparison

Parameter	FD5-36 (Triad Magnetics)	DP-241-5-36 (Signal Transformer)	Match Status
Power - Max	12VA	12VA	Identical
Voltage - Primary	115V, 230V	115V, 230V	Identical
Voltage - Secondary (Full Load)	36V	36V	Identical
Current - Output (Max)	350mA	350mA	Identical
Primary Winding(s)	Dual	Dual	Identical
Secondary Winding(s)	Single	Single	Identical
Center Tap	Yes	Yes	Identical
Type	Laminated Core	Laminated Core	Identical
Mounting Type	Chassis Mount	Chassis Mount	Identical
Termination Style	Solder, Quick Connect - 0.187" (4.7mm)	Solder, Quick Connect	Compatible
Voltage - Isolation	2500VAC	2500Vrms	Identical
Weight	0.7 lb (317.51 g)	0.7 lb (317.51 g)	Identical
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Identical
REACH Status	REACH Unaffected	REACH Unaffected	Identical
Product Status	Active	Active	Identical
Size / Dimension (L x W)	71.42mm x 34.93mm	71.40mm x 36.30mm	Within tolerance
Height - Seated (Max)	41.28mm	42.80mm	Within tolerance

Engineering Selection Recommendations

Both the FD5-36 and DP-241-5-36 are Active product status components with full RoHS3 compliance and REACH unaffected designation. Selection between these parts is based on availability and supply chain requirements rather than electrical or mechanical performance differences. The DP-241-5-36 demonstrates higher current inventory availability (1162 pcs vs. 801 pcs), which may support procurement timelines. Dimensional variations (width: 36.30mm vs. 34.93mm; height: 42.80mm vs. 41.28mm) are within acceptable mechanical tolerances for chassis-mount applications and do not affect electrical performance or functional compatibility. Both parts carry identical ECCN (EAR99) and HTSUS (8504.31.4035) classifications for regulatory and trade purposes.

Frequently Asked Questions (FAQ)

Q: Can the DP-241-5-36 be used as a direct replacement for the FD5-36 in existing designs?

A: Yes. The DP-241-5-36 meets all electrical specifications (12VA, 115V/230V primary, 36V/350mA secondary, center-tapped, 2500VAC isolation) and mechanical requirements (chassis mount, solder/quick connect termination). Dimensional differences are within acceptable tolerances for chassis-mount applications.

Q: Are there any compliance or certification differences between these parts?

A: No. Both parts are RoHS3 compliant, REACH unaffected, and carry identical ECCN and HTSUS classifications. Both maintain Active product status.

Q: What are the dimensional tolerances between the FD5-36 and DP-241-5-36?

A: Length differs by 0.02mm (71.42mm vs. 71.40mm), width by 1.37mm (34.93mm vs. 36.30mm), and height by 1.52mm (41.28mm vs. 42.80mm). These variations are within standard mechanical tolerances for laminated core transformers and do not affect mounting compatibility or electrical performance.

Q: Do both parts support the same termination methods?

A: Yes. Both parts feature solder and quick connect 0.187" (4.7mm) termination styles, ensuring direct compatibility with existing PCB layouts and connector interfaces.

Q: Which part should be selected for new procurement?

A: Selection should be based on availability and supply chain requirements. The DP-241-5-36 currently has higher inventory availability. Both parts are electrically and mechanically equivalent for all specified applications.

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