DSBT2-M-2D-DC5V Equivalent & Substitute Parts

Part Overview

The DSBT2-M-2D-DC5V is a general purpose relay manufactured by Panasonic Electric Works, featuring DPDT (2 Form D) contact configuration with 1A contact rating and 5VDC coil voltage. This through-hole mounted relay is designed for general switching applications with non-latching operation. The product is currently obsolete, making identification of compatible substitute parts essential for ongoing system maintenance and new design implementations where equivalent functionality is required.

Substiute Parts

DSBT2-M-2D-DC5V

Panasonic Electric WorksIn Stock: 1114DSBT2-M-2D-DC5V Datasheet

Current PartRFQ

TXD2-2M-4.5V

Panasonic Electric WorksIn Stock: 1122TXD2-2M-4.5V Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the DSBT2-M-2D-DC5V is determined by the following critical parameters:

Functional Requirements:

• Contact form must be DPDT (2 Form D) to maintain switching capability
• Contact rating must support minimum 1A current
• Coil type must be non-latching for equivalent operational behavior
• Termination style must be PC Pin for board compatibility
• Mounting type must be through-hole for mechanical fit

Electrical Compatibility:

• Coil voltage must be compatible with system supply (5VDC nominal or close tolerance)
• Switching voltage rating must meet or exceed application requirements
• Operating temperature range must encompass application environment
• Contact material composition must be compatible with switched circuit requirements

Compliance & Availability:

• Product status should preferably be active to ensure ongoing availability
• RoHS compliance status should be verified for regulatory requirements

The TXD2-2M-4.5V meets these substitution criteria with compatible contact configuration, current rating, and termination style, though with a lower coil voltage specification requiring circuit design consideration.

Parameter Comparison

Engineering Selection Recommendations

The TXD2-2M-4.5V is an active product substitute for the obsolete DSBT2-M-2D-DC5V. Both relays share identical contact configuration (DPDT), current rating (1A), and termination style (PC Pin), establishing functional equivalence for through-hole PCB applications.

Key Considerations:

The TXD2-2M-4.5V operates at 4.5VDC coil voltage compared to the original 5VDC specification. This 0.5V reduction requires verification that the application power supply can reliably deliver the must-operate voltage of 3.38VDC. The substitute exhibits lower coil current (55.6 mA vs. 108 mA) and higher coil resistance (81 Ohms vs. 46.3 Ohms), resulting in reduced power consumption.

The TXD2-2M-4.5V provides a fully sealed construction and extended operating temperature range (-40°C ~ 85°C vs. -40°C ~ 60°C), offering improved environmental protection. However, the maximum switching voltage is reduced to 110VDC compared to the original 220VDC specification. Verify that the application's switched voltage does not exceed this limit.

The substitute demonstrates slightly longer switching times (4 ms operate and release vs. 3 ms and 2 ms respectively), which may impact timing-critical applications.

Frequently Asked Questions (FAQ)

Q: Can the TXD2-2M-4.5V directly replace the DSBT2-M-2D-DC5V without circuit modification?

A: Direct replacement is possible if the application power supply can reliably deliver 3.38VDC minimum to the relay coil and the switched voltage does not exceed 110VDC. The identical contact configuration and current rating ensure functional compatibility. However, verify coil voltage tolerance and switching voltage requirements before implementation.

Q: What is the impact of the 0.5V coil voltage difference?

A: The TXD2-2M-4.5V requires a minimum of 3.38VDC to operate reliably. If your 5VDC supply has significant voltage drop or regulation tolerance, confirm that the minimum voltage remains above this threshold. The substitute's higher coil resistance (81 Ohms vs. 46.3 Ohms) reduces current draw, which may improve power supply margin in some applications.

Q: Are there packaging differences between these relays?

A: Both relays use through-hole PC pin termination and are mechanically compatible for PCB mounting. The TXD2-2M-4.5V is supplied in tube packaging, while the original DSBT2-M-2D-DC5V packaging is not specified. Verify mechanical dimensions and pin spacing match your PCB layout.

Q: How do the switching voltage ratings differ?

A: The DSBT2-M-2D-DC5V supports up to 250VAC or 220VDC switching voltage, while the TXD2-2M-4.5V is rated for 110VDC maximum. If your application switches AC voltage or DC voltage exceeding 110V, the substitute is not suitable. Verify your actual switched voltage against the substitute's rating.

Q: What is the significance of the fully sealed construction on the TXD2-2M-4.5V?

A: The sealed design provides enhanced protection against moisture and environmental contamination, making it suitable for applications with higher humidity or exposure to condensation. Both relays maintain MSL 1 (Unlimited) moisture sensitivity rating, but the sealed construction offers additional environmental robustness.

Q: Do the timing differences affect application performance?

A: The TXD2-2M-4.5V exhibits 1 ms longer operate time (4 ms vs. 3 ms) and 2 ms longer release time (4 ms vs. 2 ms). For applications with strict timing requirements or high-frequency switching, verify that these delays remain acceptable for system operation.