SWT860330 Equivalent & Substitute Parts

Part Overview

The SWT860330 is a solid-state relay (SSR) module manufactured by Celduc Inc., configured as a SPST-NO (1 Form A) switch with a 5 A load current rating. This component operates across a wide voltage range from 24 V to 520 V AC output with 24 VAC/DC input control. The device features zero-cross switching for AC loads and is housed in a chassis-mount module package.

The SWT860330 is classified as obsolete, necessitating identification of active equivalent components to maintain system functionality and ensure continued availability for new designs and field replacements. The substitute part identified maintains core switching functionality while offering enhanced specifications and active product status.

Substiute Parts

SWT860330

Celduc Inc.In Stock: 771SWT860330 Datasheet

Current PartRFQ

SMT8628521

Celduc Inc.In Stock: 951SMT8628521 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SWT860330 is based on the following critical parameters that must remain consistent or be exceeded:

Mandatory Compatibility Parameters:

• Circuit configuration: SPST-NO (1 Form A) topology
• Output type: AC with zero-cross switching capability
• Load voltage range: 24 V ~ 520 V minimum coverage
• Input control voltage: 24 VAC/DC compatibility
• Mounting type: Chassis mount form factor
• Package type: Module configuration

Allowable Enhancement Parameters:

• Load current rating may exceed the original 5 A specification
• Input voltage range may be broader than the original specification
• On-state resistance and other performance metrics may improve

The substitute part SMT8628521 satisfies all mandatory compatibility parameters while providing increased load current capacity (17 A versus 5 A) and maintains the identical load voltage range and switching characteristics.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: SMT8628521

The SMT8628521 is the manufacturer-recommended substitute for the obsolete SWT860330. This component maintains identical circuit topology, switching characteristics, and load voltage specifications while providing the following advantages:

• Active Product Status: The SMT8628521 is actively manufactured and supported by Celduc Inc., ensuring long-term availability and supply chain continuity.
• Enhanced Compliance: The substitute meets ROHS3 compliance standards, exceeding the RoHS compliance of the original part.
• Increased Load Capacity: The 17 A load current rating provides operational margin beyond the original 5 A specification, supporting applications with higher current demands.
• Expanded Input Voltage Range: The 24 ~ 255 VAC/DC input range accommodates broader control voltage scenarios compared to the fixed 24 VAC/DC input of the original part.
• Improved Performance: On-state resistance specification of 20 mOhms maximum provides defined electrical performance characteristics.

The SMT8628521 operates within the Sightpac® series and is classified under HTSUS code 8536.49.0080 with ECCN designation EAR99.

Frequently Asked Questions (FAQ)

Q: Can the SMT8628521 directly replace the SWT860330 in existing applications?

A: Yes. The SMT8628521 maintains identical circuit configuration (SPST-NO), output type (AC, zero-cross), load voltage range (24 V ~ 520 V), and mounting type (chassis mount module). The substitute is electrically and mechanically compatible with applications designed for the SWT860330.

Q: What is the significance of the increased 17 A load current rating on the SMT8628521 compared to the 5 A rating of the SWT860330?

A: The higher current rating indicates the substitute can safely switch loads drawing up to 17 A at the specified voltage range. Applications limited to 5 A or less operate within the safe operating area of the substitute. The increased rating does not affect compatibility with lower-current applications.

Q: Does the expanded input voltage range (24 ~ 255 VAC/DC) on the SMT8628521 affect compatibility with 24 VAC/DC control circuits?

A: No. The SMT8628521 accepts 24 VAC/DC input signals and operates identically to the SWT860330 when controlled at this voltage. The expanded range simply permits operation across a broader input voltage spectrum without affecting 24 VAC/DC applications.

Q: Are there packaging differences between the SWT860330 and SMT8628521?

A: Both components are housed in module packages suitable for chassis mounting. The SMT8628521 is supplied in box packaging, while the original part packaging specification was not detailed. Both maintain identical form factor and mounting compatibility.

Q: Why is the SWT860330 classified as obsolete?

A: The SWT860330 has been discontinued by the manufacturer. The SMT8628521 represents the active product line continuation, offering equivalent functionality with enhanced specifications and ongoing manufacturing support.

Q: What compliance certifications apply to the SMT8628521?

A: The SMT8628521 is ROHS3 compliant and carries ECCN designation EAR99 with HTSUS classification 8536.49.0080. These certifications ensure regulatory compliance for industrial and commercial applications.