ST2-DC9V Equivalent & Substitute Parts

Part Overview

The ST2-DC9V is a general purpose relay manufactured by Panasonic Electric Works, featuring a DPST-NO (2 Form A) contact configuration with 9VDC coil voltage and 8A contact rating. This through-hole mounted relay is designed for general switching applications requiring sealed, fully protected operation across industrial temperature ranges.

The ST2-DC9V has reached obsolete product status. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production or maintenance requirements for systems utilizing this relay.

Substiute Parts

ST2-DC9V

Panasonic Electric WorksIn Stock: 1061ST2-DC9V Datasheet

Current PartRFQ

ST2-DC9V-F

Panasonic Electric WorksIn Stock: 1156ST2-DC9V-F Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ST2-DC9V is determined by strict equivalence across the following critical parameters:

• Coil voltage: 9VDC
• Contact configuration: DPST-NO (2 Form A)
• Contact current rating: 8 A
• Switching voltage capability: 380VAC, 250VDC - Max
• Coil current: 25 mA
• Mounting type: Through Hole
• Termination style: PC Pin
• Seal rating: Sealed - Fully
• Operating temperature range: -40°C ~ 60°C
• Coil resistance: 360 Ohms

The ST2-DC9V-F qualifies as a direct substitute because it maintains identical electrical and mechanical specifications across all critical parameters. The primary distinction is product status: ST2-DC9V-F is active and available, whereas ST2-DC9V is obsolete.

Parameter Comparison

Engineering Selection Recommendations

The ST2-DC9V-F is the direct substitute for the obsolete ST2-DC9V. Both parts share identical electrical and mechanical specifications, ensuring functional equivalence in circuit applications.

Selection of ST2-DC9V-F is supported by:

• Active product status with confirmed inventory availability
• RoHS compliance certification
• Identical coil voltage, contact configuration, and current ratings
• Matching operating temperature range and seal rating
• Same base product number (ST2-DC), confirming design lineage

The transition from ST2-DC9V to ST2-DC9V-F requires no circuit redesign or application modification.

Frequently Asked Questions (FAQ)

Q: Can ST2-DC9V-F be used as a direct replacement for ST2-DC9V?

A: Yes. ST2-DC9V-F maintains identical electrical and mechanical specifications, including 9VDC coil voltage, DPST-NO contact form, 8A contact rating, and through-hole PC pin termination. No circuit modifications are required.

Q: What is the primary difference between ST2-DC9V and ST2-DC9V-F?

A: Product status and availability. ST2-DC9V is obsolete; ST2-DC9V-F is active. ST2-DC9V-F also carries RoHS compliance certification and is supplied in box packaging.

Q: Are there any compatibility concerns when substituting ST2-DC9V with ST2-DC9V-F?

A: No compatibility concerns exist. Both relays share identical coil resistance (360 Ohms), coil current (25 mA), switching voltage capability (380VAC, 250VDC - Max), and operating temperature range (-40°C ~ 60°C).

Q: What parameters must remain identical for substitution?

A: Critical parameters for substitution include coil voltage (9VDC), contact configuration (DPST-NO), contact current rating (8A), mounting type (through hole), termination style (PC pin), and seal rating (sealed - fully).

Q: Is RoHS compliance a requirement for substitution?

A: RoHS compliance is not a substitution requirement but represents an advantage of ST2-DC9V-F. Compliance status should be evaluated based on application and regulatory requirements.