SMDA05C/TR13

Part Overview

The SMDA05C/TR13 is a transient voltage suppressor (TVS) diode manufactured by Microchip Technology, featuring a 5V reverse standoff voltage and 11V clamping voltage. This bidirectional 4-channel device is designed for general-purpose overvoltage protection in surface-mount applications with an 8-SOIC package footprint. The part is currently in active production status. Identifying equivalent substitute parts becomes necessary when addressing supply chain considerations, compliance requirements, or performance specifications that may better suit specific application needs.

Substiute Parts

SMDA05C/TR13

Microchip TechnologyIn Stock: 1121SMDA05C/TR13 Datasheet

Current PartRFQ

SMDA05C.TBT

Semtech CorporationIn Stock: 8161SMDA05C.TBT Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SMDA05C/TR13 must maintain electrical compatibility across the following critical parameters:

• Package / Case: 8-SOIC (0.154", 3.90mm Width) — ensures mechanical fit on existing PCBs
• Voltage - Reverse Standoff (Typ): 5V — maintains threshold protection level
• Voltage - Breakdown (Min): 6V — ensures consistent trigger point
• Voltage - Clamping (Max) @ Ipp: 11V — defines maximum transient voltage suppression
• Mounting Type: Surface Mount — confirms assembly compatibility
• Bidirectional Channels: 4 — preserves functional channel configuration

The substitute part SMDA05C.TBT, manufactured by Semtech Corporation, meets these core compatibility requirements while offering enhanced peak pulse current capacity (17A versus 5A) and RoHS3 compliance.

Parameter Comparison

Engineering Selection Recommendations

Both the SMDA05C/TR13 and SMDA05C.TBT maintain identical clamping voltage and breakdown characteristics, making them functionally interchangeable for overvoltage suppression at the specified voltage thresholds. The SMDA05C.TBT variant provides higher peak pulse current capability (17A versus 5A), which may offer margin in applications subject to repetitive transient stress.

The SMDA05C.TBT is ROHS3 compliant, whereas the SMDA05C/TR13 is not RoHS compliant. For applications requiring RoHS certification or subject to regional environmental regulations, the SMDA05C.TBT is the appropriate selection.

The SMDA05C/TR13 supports a higher maximum junction temperature (150°C versus 125°C), which may be relevant in thermally demanding environments. The SMDA05C.TBT exhibits higher capacitance at 1MHz (350pF versus 200pF), which may affect high-frequency circuit behavior in sensitive applications.

Frequently Asked Questions (FAQ)

Q: Can SMDA05C.TBT be used as a direct replacement for SMDA05C/TR13?

A: Yes, the SMDA05C.TBT is functionally compatible as a direct replacement, provided the increased peak pulse current (17A) and higher capacitance (350pF) do not negatively affect circuit performance. The identical package, clamping voltage, and breakdown voltage ensure mechanical and electrical compatibility.

Q: What is the significance of the different reverse standoff voltage specifications?

A: The SMDA05C/TR13 specifies 5V as a typical value, while SMDA05C.TBT specifies 5V as a maximum value. Both maintain the same 6V minimum breakdown voltage, ensuring protection thresholds remain within specification for both parts.

Q: How does the higher capacitance of SMDA05C.TBT affect circuit performance?

A: The SMDA05C.TBT exhibits 350pF capacitance at 1MHz compared to 200pF for the SMDA05C/TR13. In high-frequency applications or noise-sensitive circuits, this increased capacitance may introduce additional parasitic loading. Circuit verification is appropriate when switching between these variants.

Q: What RoHS compliance difference exists between these parts?

A: The SMDA05C/TR13 is RoHS non-compliant, while SMDA05C.TBT is ROHS3 compliant. Applications requiring RoHS certification or subject to EU environmental regulations must use SMDA05C.TBT.

Q: Are there operating temperature limitations to consider?

A: The SMDA05C/TR13 operates over -55°C to 150°C, while SMDA05C.TBT operates over -55°C to 125°C. In applications exceeding 125°C junction temperature, SMDA05C/TR13 provides extended thermal capability; however, SMDA05C.TBT is still suitable for most standard industrial operating ranges.

Q: How does the increased current rating affect part selection?

A: The SMDA05C.TBT current rating of 17A versus 5A for SMDA05C/TR13 provides improved transient stress margin. For applications with higher peak pulse current demands, SMDA05C.TBT is the preferred selection. Both parts maintain identical 300W peak pulse power ratings.