TND027SW-TL-2H-Z Equivalent & Substitute Parts

Part Overview

The TND027SW-TL-2H-Z is a power management IC manufactured by onsemi, classified as a Power Switch/Driver with 1:2 input-to-output ratio and N-Channel low-side configuration. This component is designed for relay and solenoid driver applications with a maximum output current of 1.5A and load voltage rating of 40V. The part is currently listed as obsolete, necessitating identification of functionally equivalent alternatives for ongoing design requirements and production continuity.

Substiute Parts

TND027SW-TL-2H-Z

onsemiIn Stock: 7676TND027SW-TL-2H-Z Datasheet

Current PartRFQ

ZXMS6005DT8TA

Diodes IncorporatedIn Stock: 3122ZXMS6005DT8TA Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TND027SW-TL-2H-Z is determined by the following critical parameters:

Output Configuration & Type: Both the main part and substitute must provide N-Channel low-side driver functionality with multiple outputs suitable for relay and solenoid switching applications.

Electrical Performance: Substitute parts must meet or exceed the maximum load voltage (40V minimum), output current capability (1.5A minimum), and on-resistance specifications to ensure functional equivalence in existing circuit designs.

Package Compatibility: Surface mount packages with equivalent pin counts and footprints enable direct board-level substitution without layout redesign.

Fault Protection: Presence of current limiting, over-temperature, and over-voltage protection ensures equivalent reliability and circuit protection characteristics.

Operating Temperature Range: The substitute must support the specified operating range (-40°C to 85°C minimum) for thermal compatibility.

The ZXMS6005DT8TA from Diodes Incorporated meets these substitution criteria with enhanced electrical performance characteristics and active product status.

Parameter Comparison

Engineering Selection Recommendations

The ZXMS6005DT8TA is qualified as an active substitute for the obsolete TND027SW-TL-2H-Z based on the following engineering criteria:

Functional Equivalence: Both devices provide N-Channel low-side power switching with dual outputs, non-inverting input control, and identical fault protection mechanisms (current limiting, over-temperature, over-voltage).

Enhanced Electrical Performance: The ZXMS6005DT8TA exceeds the main part specifications with 60V maximum load voltage (versus 40V), 1.8A maximum output current (versus 1.5A), and 150mOhm typical on-resistance (versus 300mOhm), providing improved efficiency and thermal performance in relay and solenoid driver applications.

Extended Operating Range: The substitute supports -40°C to 125°C operating temperature, exceeding the main part's -40°C to 85°C range, enabling deployment in wider thermal environments.

Active Product Status & Compliance: The ZXMS6005DT8TA maintains active manufacturing status with AEC-Q101 automotive qualification and ROHS3 compliance, ensuring long-term availability and regulatory alignment.

Package Consideration: The ZXMS6005DT8TA is supplied in SOT-223-8 package (SM8 supplier designation) versus the main part's 8-SOIC package. Physical footprint verification is required for board-level compatibility assessment.

Frequently Asked Questions (FAQ)

Q: Can the ZXMS6005DT8TA directly replace the TND027SW-TL-2H-Z without circuit modification?

A: Functional substitution is supported based on equivalent output configuration, control interface, and fault protection. However, package differences (SOT-223-8 versus 8-SOIC) require PCB footprint verification. Circuit operation remains compatible due to matching non-inverting input control and dual N-Channel low-side output topology.

Q: What are the key electrical advantages of the ZXMS6005DT8TA?

A: The substitute provides 50% higher load voltage rating (60V versus 40V), 20% increased output current capability (1.8A versus 1.5A), and 50% lower on-resistance (150mOhm versus 300mOhm), resulting in reduced power dissipation and improved switching efficiency.

Q: Are there thermal performance differences between these devices?

A: The ZXMS6005DT8TA supports extended operating temperature range (-40°C to 125°C versus -40°C to 85°C) and features lower on-resistance, reducing junction temperature rise during operation. These characteristics enable deployment in higher ambient temperature applications.

Q: What compliance certifications apply to the substitute part?

A: The ZXMS6005DT8TA holds AEC-Q101 automotive qualification and ROHS3 compliance status. Both devices are REACH unaffected and classified under EAR99 export control.

Q: How does the input-to-output ratio difference affect substitution?

A: The main part specifies 1:2 ratio while the substitute specifies 1:1 ratio. Both configurations provide dual independent N-Channel outputs controlled by non-inverting logic inputs, maintaining functional equivalence for relay and solenoid driver applications.

Q: What packaging considerations are critical for board redesign?

A: The main part uses 8-SOIC (0.154" width, 3.90mm) while the substitute uses SOT-223-8. These packages have different footprints and pin spacing. PCB layout modification is necessary; however, pin functionality and electrical characteristics remain compatible.