SMDB24CE3/TR13 Equivalent & Substitute Parts Reference

Part Overview

The SMDB24CE3/TR13 is a 4-channel bidirectional Transient Voltage Suppressor (TVS) diode manufactured by Microchip Technology, part of the TVSarray™ series. This surface-mount component operates with a 24V reverse standoff voltage and 43V maximum clamping voltage, designed for general-purpose transient protection applications. The device is currently in active production status with RoHS3 compliance and unlimited moisture sensitivity rating. Substitute parts are identified based on matching electrical performance parameters, package compatibility, and functional equivalence within the TVS diode category.

Substiute Parts

SMDB24CE3/TR13

Microchip TechnologyIn Stock: 927SMDB24CE3/TR13 Datasheet

Current PartRFQ

SMDA24C/TR7

Microchip TechnologyIn Stock: 1720SMDA24C/TR7 Datasheet

DirectRFQ

SMDA24C-7.TBT

Semtech CorporationIn Stock: 1720SMDA24C-7.TBT Datasheet

SimilarRFQ

SMDA24C.TBT

Semtech CorporationIn Stock: 10458SMDA24C.TBT Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SMDB24CE3/TR13 are classified based on strict electrical and mechanical parameter matching within the TVS diode category. The primary substitution criteria are:

Critical Matching Parameters:

• Voltage - Reverse Standoff: 24V
• Voltage - Breakdown (Min): 26.7V
• Current - Peak Pulse (8/20µs): 5A
• Power - Peak Pulse: 300W
• Package / Case: 8-SOIC (0.154", 3.90mm Width)
• Mounting Type: Surface Mount
• Bidirectional Channels: 4

Direct Equivalent Classification: SMDA24C/TR7 (Microchip Technology) matches all critical electrical parameters and package specifications. This part maintains identical voltage ratings, current handling, and power dissipation characteristics.

Similar Classification with Parameter Variance: SMDA24C-7.TBT (Semtech Corporation) differs in bidirectional channel count (7 channels vs. 4 channels) and operating temperature maximum (125°C vs. 150°C), with slightly elevated capacitance (50pF vs. 45pF).

SMDA24C.TBT (Semtech Corporation) differs in voltage clamping specification (55V vs. 43V maximum) and operating temperature maximum (125°C vs. 150°C), with elevated capacitance (50pF vs. 45pF).

Parameter Comparison

Engineering Selection Recommendations

SMDA24C/TR7 (Direct Equivalent): This Microchip Technology part provides complete electrical and mechanical equivalence to the SMDB24CE3/TR13. All voltage ratings, current specifications, power dissipation, and package dimensions are identical. The primary distinction is RoHS compliance status: SMDA24C/TR7 is RoHS non-compliant, whereas SMDB24CE3/TR13 is ROHS3 compliant. Selection of this substitute requires confirmation that RoHS non-compliance is acceptable for the application. Inventory availability is higher (1688 pcs vs. 864 pcs).

SMDA24C-7.TBT (Similar with Deviations): This Semtech Corporation part maintains critical voltage and current parameters but introduces three parameter deviations: (1) bidirectional channel count increases from 4 to 7 channels, (2) operating temperature maximum reduces from 150°C to 125°C, and (3) capacitance increases from 45pF to 50pF at 1MHz. This part is RoHS compliant. Selection requires confirmation that the 7-channel configuration, reduced temperature rating, and elevated capacitance are compatible with circuit requirements.

SMDA24C.TBT (Similar with Deviations): This Semtech Corporation part maintains voltage breakdown and current specifications but deviates in voltage clamping (55V vs. 43V maximum), operating temperature maximum (125°C vs. 150°C), and capacitance (50pF vs. 45pF). The elevated clamping voltage may provide additional protection margin but alters transient response characteristics. This part is ROHS3 compliant and available in higher quantity (10400 pcs). Selection requires confirmation that the 55V clamping specification and reduced temperature rating are compatible with circuit design.

Frequently Asked Questions (FAQ)

Q: Can SMDA24C/TR7 be used as a direct replacement for SMDB24CE3/TR13?

A: SMDA24C/TR7 provides complete electrical and mechanical equivalence. The primary consideration is RoHS compliance: SMDA24C/TR7 is RoHS non-compliant while SMDB24CE3/TR13 is ROHS3 compliant. Substitution is valid only if RoHS non-compliance is acceptable for the application.

Q: What is the significance of the 7-channel configuration in SMDA24C-7.TBT compared to the 4-channel SMDB24CE3/TR13?

A: The bidirectional channel count indicates the number of independent protection paths within the 8-SO package. The 7-channel SMDA24C-7.TBT provides additional protection channels but may not be compatible with circuit designs expecting 4-channel functionality. Verification of pin configuration and circuit connectivity is required.

Q: Why does SMDA24C.TBT have a 55V clamping voltage instead of 43V?

A: SMDA24C.TBT is a different variant within the SMDA24 base product family. The 55V clamping specification alters the transient response profile and may not be suitable for applications designed around 43V clamping characteristics. This part should be selected only if the higher clamping voltage is compatible with circuit requirements.

Q: Are all substitute parts available in the same packaging format?

A: No. SMDB24CE3/TR13 and SMDA24C/TR7 are supplied in Tape & Reel (TR) format. SMDA24C-7.TBT is supplied in Tape & Reel (TR) format. SMDA24C.TBT is supplied in Cut Tape (CT) & Digi-Reel® format. Packaging format selection depends on assembly equipment compatibility and procurement requirements.

Q: What is the impact of the operating temperature range difference between SMDB24CE3/TR13 (150°C) and the Semtech alternatives (125°C)?

A: The SMDB24CE3/TR13 supports junction temperatures up to 150°C, while SMDA24C-7.TBT and SMDA24C.TBT are rated to 125°C maximum. Applications requiring operation above 125°C junction temperature cannot use the Semtech alternatives. Thermal analysis of the specific application is required to determine if the reduced temperature rating is acceptable.

Q: How does the capacitance difference (45pF vs. 50pF) affect circuit performance?

A: Capacitance at 1MHz is a parasitic parameter that affects high-frequency transient response and signal integrity. The 5pF difference between SMDB24CE3/TR13 (45pF) and the Semtech alternatives (50pF) may impact circuits with stringent frequency response requirements. Applications sensitive to capacitive loading should maintain the 45pF specification.