SJ-3545 Equivalent & Substitute Parts

Part Overview

The SJ-3545 is a 4.6mm stereo phone jack connector manufactured by CUI Devices, designed for headphone and audio applications. This connector features a right-angle mounting configuration with kinked pin termination and is rated for 12VDC at 1A. The SJ-3545 is currently classified as obsolete, making equivalent substitute parts necessary for ongoing production and maintenance applications requiring compatible 4.6mm stereo jack functionality.

Key Parameters

Parameter	Value
Connector Type	Phone Jack (Female)
Mating Diameter	4.60mm (0.141", 1/8", Mini Plug)
Signal Configuration	Stereo (3 Conductor, TRS)
Number of Contacts	3 Conductors, 5 Contacts
Mounting Type	Through Hole, Right Angle
Internal Switches	Two Switches
Voltage Rating	12VDC
Current Rating	1 A
Operating Temperature	-25°C ~ 85°C
Panel Hole Size	0.236" (5.99mm)
Thread Size	M6

Substitute Part Grouping Explanation

Substitution eligibility for the SJ-3545 is determined by the following critical parameters:

Connector type: Phone jack, female gender
Mating diameter: 4.60mm (0.141", 1/8", Mini Plug) headphone standard
Signal configuration: Stereo (3 Conductor, TRS)
Contact count: 3 Conductors, 5 Contacts
Mounting configuration: Through hole, right angle orientation
Internal switch functionality: Two switches
Electrical ratings: 12VDC, 1A minimum
Panel interface: M6 thread, 0.236" (5.99mm) hole size

The identified substitute parts SJ1-3545 and 35RAPC4BH3 meet these core substitution criteria. Differences in termination method (kinked pin versus solder), contact plating materials, and packaging do not prevent functional equivalence when the above parameters align.

Parameter Comparison

Parameter	SJ-3545	SJ1-3545	35RAPC4BH3
Manufacturer	CUI Devices	CUI Devices	Switchcraft Inc.
Product Status	Obsolete	Active	Active
Connector Type	Phone Jack	Phone Jack	Phone Jack
Gender	Female	Female	Female
Signal Lines	Stereo (3 Conductor, TRS)	Stereo (3 Conductor, TRS)	Stereo (3 Conductor, TRS)
Mating Diameter	4.60mm (0.141", 1/8", Mini Plug)	4.60mm (0.141", 1/8", Mini Plug)	4.60mm (0.141", 1/8", Mini Plug)
Actual Diameter	0.142" (3.60mm)	0.142" (3.60mm)	0.142" (3.60mm)
Number of Positions/Contacts	3 Conductors, 5 Contacts	3 Conductors, 5 Contacts	3 Conductors, 5 Contacts
Internal Switches	Two Switches	Two Switches	Two Switches
Mounting Type	Through Hole, Right Angle	Panel Mount, Through Hole, Right Angle	Panel Mount, Through Hole, Right Angle
Termination	Kinked Pin	Kinked Pin	Solder
Shielding	Unshielded	Unshielded	Unshielded
Housing Material	Polybutylene Terephthalate (PBT)	Polybutylene Terephthalate (PBT)	Polybutylene Terephthalate (PBT)
Contact Material	Brass	Brass, Copper Alloy	Copper Alloy
Contact Plating	Nickel	Nickel, Tin	Silver
Panel Hole Size	0.236" (5.99mm)	0.236" (5.99mm)	Not specified
Thread Size	M6	M6	Not specified
RoHS Status	RoHS Compliant	ROHS3 Compliant	ROHS3 Compliant
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected
ECCN	EAR99	EAR99	EAR99
HTSUS	8536.69.4040	8536.69.4040	8536.69.4040

Engineering Selection Recommendations

SJ1-3545 (CUI Devices): This substitute is the primary equivalent for the obsolete SJ-3545. Both parts share identical core specifications including connector type, mating diameter, signal configuration, contact count, and mounting orientation. The SJ1-3545 maintains active product status and is ROHS3 compliant. The primary difference is termination method (kinked pin on both), with SJ1-3545 offering enhanced contact plating (nickel and tin) and inclusion of mounting hardware. This part is suitable for direct replacement in applications requiring the same electrical and mechanical interface.

35RAPC4BH3 (Switchcraft Inc.): This substitute provides functional equivalence with differences in termination technology (solder versus kinked pin) and contact plating (silver). The 35RAPC4BH3 is ROHS3 compliant and maintains the same core connector specifications. Selection of this part requires compatibility with solder termination in the target application. Panel hole size and thread size specifications are not provided for this part; verification against mechanical mounting requirements is necessary.

Both substitute parts maintain compliance with REACH and EAR99 export classifications, matching the original SJ-3545 specifications.

Frequently Asked Questions (FAQ)

Q: Can the SJ1-3545 directly replace the SJ-3545 in existing designs?

A: Yes. The SJ1-3545 shares identical core specifications with the SJ-3545, including connector type, mating diameter, signal configuration, contact count, mounting type, and electrical ratings. The primary difference is enhanced contact plating and inclusion of mounting hardware in the SJ1-3545. Both use kinked pin termination.

Q: What is the key difference between the SJ1-3545 and 35RAPC4BH3?

A: The primary difference is termination method. The SJ1-3545 uses kinked pin termination, while the 35RAPC4BH3 uses solder termination. Contact plating also differs: SJ1-3545 uses nickel and tin, while 35RAPC4BH3 uses silver. Both maintain the same mating diameter, signal configuration, and contact count.

Q: Are panel mounting dimensions identical across all three parts?

A: The SJ-3545 and SJ1-3545 both specify 0.236" (5.99mm) panel hole size and M6 thread size. The 35RAPC4BH3 does not provide these specifications in the available data. Mechanical verification is required before selecting the 35RAPC4BH3 for panel mount applications.

Q: What packaging options are available?

A: The SJ-3545 is supplied in standard packaging. The SJ1-3545 is supplied in bag packaging. The 35RAPC4BH3 is supplied in bulk packaging. Selection depends on procurement and assembly requirements.

Q: Are all three parts RoHS compliant?

A: Yes. The SJ-3545 is RoHS compliant. Both SJ1-3545 and 35RAPC4BH3 are ROHS3 compliant, meeting current regulatory requirements.

Q: Can the 35RAPC4BH3 be used in applications requiring kinked pin termination?

A: No. The 35RAPC4BH3 uses solder termination exclusively. Applications requiring kinked pin termination must use either the SJ-3545 or SJ1-3545.

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