Equivalent & Substitute Parts Reference: TD2420Q-10

Part Overview

The Sensata-Crydom TD2420Q-10 is a solid state relay (SSR) with SPST-NO (1 Form A) x 4 circuit configuration, designed for AC load switching in a hockey puck package. It supports a load current of 20A across a load voltage range of 24V to 280V AC, with an input control voltage range of 4V to 15VDC and features zero cross output. The product is listed as "Not For New Designs," indicating limited future availability and necessitating the consideration of equivalent or substitute SSR models with matching key parameters for new circuit implementations or ongoing procurement needs.

Substiute Parts

TD2420Q-10

Sensata-CrydomIn Stock: 988TD2420Q-10 Datasheet

Current PartRFQ

84154010N

CrouzetIn Stock: 109584154010N Datasheet

SimilarRFQ

SSRQ-240D20

TE Connectivity Potter & Brumfield RelaysIn Stock: 1112SSRQ-240D20 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Part substitution is determined strictly by matching electrical and mechanical parameters, including circuit configuration (SPST-NO (1 Form A) x 4), output type (AC, Zero Cross), input and load voltage ranges, load current rating, package type (hockey puck), mounting methodology (chassis mount), and compliance status. Substitute SSRs must exhibit equivalent or superior ratings in these fields to qualify for direct replacement.

Parameter Comparison

Engineering Selection Recommendations

Substitutes should be selected according to product status and compliance requirements. The main part, TD2420Q-10, is "Not For New Designs," and both alternatives are listed as "Active." All referenced SSRs are RoHS compliant. If continued CE, CSA, cURus, or TUV certifications are required, verify the substitute part's certification by direct comparison with the main part's approvals. Physical mounting and terminal compatibility should align with application requirements based on the provided parameters.

Frequently Asked Questions (FAQ)

Q1: What are the critical parameters for substituting TD2420Q-10?
A1: Electrical ratings (input and load voltage ranges, load current), circuit type (SPST-NO x 4), output functionality (AC, Zero Cross), package type (hockey puck), mounting method, and compliance status.

Q2: Can these substitute SSRs be used in the same chassis mount applications?
A2: Both SSRQ-240D20 and 84154010N offer chassis mount capability and use the hockey puck package.

Q3: Are the termination styles identical across substitute SSRs?
A3: TD2420Q-10 and SSRQ-240D20 utilize Quick Connect - 0.250" (6.3mm) terminals; 84154010N features Screw Terminal connections.

Q4: Are there differences in load current ratings among substitutes?
A4: 84154010N supports a higher load current (25A); SSRQ-240D20 matches the main part's 20A specification.

Q5: Do substitutes offer equivalent compliance and certification?
A5: All alternatives are RoHS compliant. Certifications must be reviewed for individual agency approvals if required by the application.

Q6: What package considerations exist when replacing TD2420Q-10?
A6: Only models with the hockey puck package and compatible mounting types have been included as substitutes.