SMDA24CE3/TR13 Equivalent & Substitute Parts

Part Overview

The SMDA24CE3/TR13 is a bidirectional transient voltage suppressor (TVS) diode manufactured by Microchip Technology, classified within the TVSarray™ series. This surface-mount component operates as a Zener-type TVS diode with four integrated channels, designed for general-purpose transient voltage suppression applications. The device is currently in active product status with RoHS3 compliance and unlimited moisture sensitivity rating (MSL 1). Alternative equivalent and substitute parts are identified to support procurement flexibility, inventory management, and design continuity across manufacturing environments.

Substiute Parts

SMDA24CE3/TR13

Microchip TechnologyIn Stock: 1101SMDA24CE3/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

Substitution eligibility for the SMDA24CE3/TR13 is determined by strict alignment of the following critical electrical and mechanical parameters:

Primary Substitution Criteria:

• Voltage - Reverse Standoff (Typ): 24V
• Voltage - Breakdown (Min): 26.7V
• Voltage - Clamping (Max) @ Ipp: 43V (direct equivalents) or higher (acceptable for suppression margin)
• Current - Peak Pulse (10/1000µs): 5A (8/20µs)
• Power - Peak Pulse: 300W
• Package / Case: 8-SOIC (0.154", 3.90mm Width)
• Mounting Type: Surface Mount
• Type: Zener
• Bidirectional Channels: 4 (direct equivalents) or higher (acceptable for multi-channel applications)

Substitute Categories:

Direct Equivalent: SMDA24C/TR7 (Microchip Technology) — Identical electrical specifications and channel count; differs only in packaging format (Tape & Reel variant) and RoHS compliance status.

Similar Substitute (Channel Variation): SMDA24C-7.TBT (Semtech Corporation) — Meets all voltage and current specifications; features 7 bidirectional channels (exceeds 4-channel requirement); operates within compatible temperature range (-55°C to 125°C); RoHS compliant.

Similar Substitute (Clamping Voltage Variation): SMDA24C.TBT (Semtech Corporation) — Meets all voltage standoff and breakdown specifications; clamping voltage rated at 55V (exceeds 43V specification, providing additional suppression margin); operates within compatible temperature range (-55°C to 125°C); RoHS compliant; available in higher inventory quantity.

Parameter Comparison

Engineering Selection Recommendations

SMDA24C/TR7 (Microchip Technology): Selection of this direct equivalent is appropriate when maintaining single-manufacturer sourcing is a design requirement. Electrical specifications are identical to the main part. However, this substitute carries RoHS non-compliant status, which may conflict with regulatory or procurement policies requiring RoHS3 compliance. Use only when RoHS exemptions are documented and approved.

SMDA24C-7.TBT (Semtech Corporation): This substitute is suitable for applications requiring multi-channel TVS protection beyond the 4-channel baseline. The 7-channel configuration provides expanded transient suppression capability across additional signal lines within the same 8-SOIC package footprint. RoHS compliance and operating temperature range of -55°C to 125°C are compatible with most general-purpose applications. Capacitance specification (50pF @ 1MHz) is marginally higher than the main part (45pF @ 1MHz), which may affect high-frequency circuit performance in sensitive applications.

SMDA24C.TBT (Semtech Corporation): This substitute offers the highest clamping voltage specification (55V) among available alternatives, providing 12V additional suppression margin beyond the main part's 43V rating. This enhanced margin is beneficial for applications requiring robust transient protection or operating in high-noise environments. RoHS3 compliance aligns with the main part's regulatory status. Highest available inventory (10,400 pcs) supports supply chain continuity. Operating temperature range (-55°C to 125°C) is 25°C lower than the main part's maximum; verify compatibility with applications requiring operation above 125°C junction temperature.

Frequently Asked Questions (FAQ)

Q: Can SMDA24C/TR7 be used as a direct replacement for SMDA24CE3/TR13?

A: Yes, SMDA24C/TR7 is electrically and mechanically identical to SMDA24CE3/TR13. Both devices share identical voltage specifications (24V standoff, 26.7V breakdown, 43V clamping), current ratings (5A peak pulse), power dissipation (300W), and 4-channel bidirectional configuration. The primary difference is RoHS compliance status; SMDA24C/TR7 is non-compliant, while SMDA24CE3/TR13 is ROHS3 compliant. Substitution is valid only when RoHS compliance is not a design or procurement requirement.

Q: What is the difference between the 4-channel and 7-channel variants?

A: The SMDA24C-7.TBT features 7 bidirectional channels integrated within the same 8-SOIC package, compared to 4 channels in the main part and SMDA24C/TR7. This allows simultaneous transient suppression across more signal lines. All voltage and current specifications remain identical. The 7-channel variant is suitable for designs requiring protection on additional I/O lines without increasing board footprint.

Q: Why does SMDA24C.TBT have a higher clamping voltage (55V vs. 43V)?

A: SMDA24C.TBT is manufactured by Semtech Corporation and represents a different design variant within the SMDA24 base product family. The 55V clamping specification provides additional transient suppression margin beyond the 43V specification of the Microchip variant. This higher clamping voltage does not affect reverse standoff (24V) or breakdown (26.7V) specifications, but results in greater voltage suppression capability during transient events. Selection depends on application requirements for suppression margin.

Q: Are all substitute parts pin-compatible with the main part?

A: Yes, all substitute parts use the 8-SOIC (0.154", 3.90mm Width) package with identical pinout configuration. Surface-mount placement and reflow soldering processes are compatible across all variants. PCB layout and footprint designs require no modification when substituting between listed parts.

Q: What is the impact of the 25°C operating temperature difference between the main part and Semtech substitutes?

A: The main part (SMDA24CE3/TR13) operates to 150°C junction temperature, while Semtech substitutes (SMDA24C-7.TBT and SMDA24C.TBT) operate to 125°C. This 25°C difference is significant only for applications where sustained junction temperatures exceed 125°C. For typical general-purpose transient suppression applications operating within -55°C to 125°C range, this difference is not limiting. Verify application thermal requirements before selecting Semtech variants for high-temperature environments.

Q: Can SMDA24C.TBT be used in place of SMDA24CE3/TR13 without circuit redesign?

A: Yes, SMDA24C.TBT is a direct mechanical and electrical substitute. The higher clamping voltage (55V vs. 43V) provides additional suppression margin and does not require circuit redesign. All other specifications (standoff voltage, breakdown voltage, current rating, power dissipation, package, and pinout) are compatible. No PCB layout or schematic modifications are necessary.

Q: What inventory considerations apply to these substitutes?

A: SMDA24C.TBT offers the highest available inventory (10,400 pcs), providing superior supply chain continuity. SMDA24C/TR7 and SMDA24C-7.TBT each maintain moderate inventory levels (1,688 and 1,620 pcs respectively). The main part SMDA24CE3/TR13 has lower inventory (1,005 pcs). For applications requiring high-volume procurement or long-term supply assurance, SMDA24C.TBT is the preferred substitute.

Q: Are there RoHS compliance implications when substituting between these parts?

A: Yes, RoHS compliance status differs among substitutes. SMDA24CE3/TR13 and SMDA24C.TBT are ROHS3 compliant. SMDA24C-7.TBT is RoHS compliant (non-ROHS3). SMDA24C/TR7 is RoHS non-compliant. For applications subject to RoHS3 regulatory requirements, only SMDA24CE3/TR13 and SMDA24C.TBT are acceptable substitutes. Verify compliance requirements with procurement and quality assurance before finalizing part selection.