ST2-L2-DC6V Equivalent & Substitute Parts

Part Overview

The ST2-L2-DC6V is a general purpose relay manufactured by Panasonic Electric Works, featuring a DPST-NO (2 Form A) contact configuration with a 6VDC coil. This through-hole mounted relay is designed for switching applications up to 8A at 380VAC or 250VDC maximum. The product is currently obsolete, making identification of compatible substitute parts essential for ongoing maintenance and new designs requiring equivalent functionality.

Substiute Parts

ST2-L2-DC6V

Panasonic Electric WorksIn Stock: 784ST2-L2-DC6V Datasheet

Current PartRFQ

DSP2A-L2-DC6V

Panasonic Electric WorksIn Stock: 989DSP2A-L2-DC6V Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ST2-L2-DC6V is determined by the following critical parameters:

• Coil Voltage: Must be 6VDC to ensure direct compatibility with existing control circuits
• Contact Form: Must be DPST-NO (2 Form A) to maintain switching topology
• Mounting Type: Must be Through Hole to fit existing PCB layouts
• Termination Style: Must be PC Pin for direct board connection
• Operating Temperature Range: Must encompass -40°C ~ 60°C minimum
• Seal Rating: Must be Sealed - Fully for environmental protection
• Coil Type: Must be Latching, Dual Coil for functional equivalence

The DSP2A-L2-DC6V meets all mandatory substitution criteria. However, the contact current rating differs (5A versus 8A), and the switching voltage maximum is reduced (250VAC, 125VDC versus 380VAC, 250VDC). These differences must be evaluated against specific application requirements.

Parameter Comparison

Engineering Selection Recommendations

The DSP2A-L2-DC6V is the designated substitute for the obsolete ST2-L2-DC6V. Both relays are manufactured by Panasonic Electric Works and share identical coil voltage, contact form, mounting configuration, and operating temperature specifications.

Selection of the DSP2A-L2-DC6V is appropriate when:

• Application current requirements do not exceed 5A
• Switching voltage requirements do not exceed 250VAC or 125VDC
• RoHS compliance is required (DSP2A-L2-DC6V is RoHS Compliant)
• Active product support and availability are priorities

The DSP2A-L2-DC6V features a faster release time (5ms versus 10ms) and operates with lower coil resistance (120 Ohms versus 155 Ohms), resulting in higher coil current draw (50mA versus 38.7mA). These characteristics must be evaluated against circuit design constraints.

Frequently Asked Questions (FAQ)

Q: Can the DSP2A-L2-DC6V directly replace the ST2-L2-DC6V in all applications?

A: Direct replacement is possible only when application current does not exceed 5A and switching voltage does not exceed 250VAC or 125VDC. The ST2-L2-DC6V supports higher current (8A) and voltage (380VAC, 250VDC) ratings. Verify load specifications before substitution.

Q: What is the difference in contact material between these relays?

A: The ST2-L2-DC6V uses Silver Alloy contacts, while the DSP2A-L2-DC6V uses Silver Tin Oxide (AgSnO). Both materials are suitable for general purpose switching applications. Contact material selection affects arc resistance and contact wear characteristics.

Q: Why is the coil current different between the two relays?

A: The DSP2A-L2-DC6V has lower coil resistance (120 Ohms versus 155 Ohms), resulting in higher coil current (50mA versus 38.7mA) at the same 6VDC supply voltage. Circuit design must accommodate this increased current draw.

Q: Are both relays available in the same packaging?

A: The ST2-L2-DC6V is specified with "-" packaging, while the DSP2A-L2-DC6V is supplied in Bulk packaging. Both use identical PC Pin termination and through-hole mounting, ensuring physical compatibility on PCBs.

Q: What compliance certifications apply to the DSP2A-L2-DC6V?

A: The DSP2A-L2-DC6V holds cURus and VDE approval agency certifications and is RoHS Compliant. The ST2-L2-DC6V compliance status is not specified in available documentation.