SMDB05C/TR13 Equivalent & Substitute Parts

Part Overview

The SMDB05C/TR13 is a bidirectional transient voltage suppressor (TVS) diode manufactured by Microchip Technology, designed for general-purpose overvoltage protection applications. This surface-mount component operates with a 5V reverse standoff voltage and provides 11V maximum clamping voltage at peak pulse current. The device is classified as Active product status and is available in 8-SOIC packaging.

Substitute parts are identified when equivalent electrical performance and mechanical compatibility are maintained across critical parameters including voltage ratings, clamping characteristics, peak pulse current handling, and package form factor. Substitution becomes necessary due to inventory availability, supply chain considerations, or compliance requirements.

Substiute Parts

SMDB05C/TR13

Microchip TechnologyIn Stock: 712SMDB05C/TR13 Datasheet

Current PartRFQ

SMDA05C.TBT

Semtech CorporationIn Stock: 8161SMDA05C.TBT Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SMDB05C/TR13 is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Voltage - Reverse Standoff: 5V
• Voltage - Breakdown (Min): 6V
• Voltage - Clamping (Max) @ Ipp: 11V
• Bidirectional Channels: 4
• Package / Case: 8-SOIC (0.154", 3.90mm Width)
• Mounting Type: Surface Mount

Allowable Variation Parameters:

• Current - Peak Pulse (8/20µs): Equal to or greater than 5A
• Power - Peak Pulse: Equal to or greater than 300W
• Operating Temperature Range: Equal to or exceeding -55°C to 150°C
• Capacitance @ 1MHz: May vary within application tolerance

The SMDA05C.TBT from Semtech Corporation qualifies as a substitute part because it maintains all mandatory matching parameters while providing enhanced current handling (17A versus 5A) and equivalent power dissipation capability.

Parameter Comparison

Engineering Selection Recommendations

SMDB05C/TR13 (Microchip Technology):

• Product Status: Active
• RoHS Status: RoHS non-compliant
• REACH Status: REACH Unaffected
• Moisture Sensitivity Level: 1 (Unlimited)
• Current Inventory: 681 Pcs

SMDA05C.TBT (Semtech Corporation):

• Product Status: Active
• RoHS Status: ROHS3 Compliant
• REACH Status: REACH Unaffected
• Moisture Sensitivity Level: 1 (Unlimited)
• Current Inventory: 8076 Pcs

Selection between these parts depends on regulatory compliance requirements. The SMDA05C.TBT provides ROHS3 compliance, whereas the SMDB05C/TR13 does not. Both parts maintain equivalent voltage protection characteristics and package compatibility. The SMDA05C.TBT offers superior peak pulse current handling (17A versus 5A), providing additional margin for transient suppression. The SMDB05C/TR13 supports a higher maximum operating temperature (150°C versus 125°C). The SMDA05C.TBT exhibits higher capacitance at 1MHz (350pF versus 200pF), which may affect high-frequency circuit behavior.

Frequently Asked Questions (FAQ)

Q: Can SMDA05C.TBT replace SMDB05C/TR13 in existing designs?

A: Yes, the SMDA05C.TBT is electrically and mechanically compatible as a substitute. Both devices maintain identical voltage ratings (5V standoff, 6V breakdown, 11V clamping), four bidirectional channels, and 8-SOIC package form factor. The substitute part provides enhanced current handling capability (17A versus 5A), making it suitable for applications requiring higher transient suppression capacity.

Q: What are the differences in operating temperature ranges?

A: The SMDB05C/TR13 operates from -55°C to 150°C, while the SMDA05C.TBT operates from -55°C to 125°C. Applications requiring operation above 125°C junction temperature must use the SMDB05C/TR13. For applications within the -55°C to 125°C range, both parts are suitable.

Q: How does the capacitance difference affect circuit performance?

A: The SMDA05C.TBT exhibits 350pF capacitance at 1MHz compared to 200pF for the SMDB05C/TR13. This 150pF difference may impact high-frequency signal integrity and impedance matching in sensitive analog circuits. Circuit simulation or testing is necessary to determine if this capacitance variation affects specific application requirements.

Q: Are both parts available in the same packaging format?

A: Yes, both the SMDB05C/TR13 and SMDA05C.TBT are supplied in 8-SOIC (0.154", 3.90mm Width) surface-mount packages. Both are available in Tape & Reel (TR) format. Pin-to-pin compatibility and PCB footprint requirements are identical.

Q: What is the significance of RoHS compliance differences?

A: The SMDA05C.TBT is ROHS3 compliant, while the SMDB05C/TR13 is RoHS non-compliant. Applications subject to RoHS regulations or customer requirements mandating RoHS compliance must use the SMDA05C.TBT. Both parts are REACH Unaffected and carry Moisture Sensitivity Level 1 (Unlimited).

Q: Which part should be selected for new designs?

A: Selection depends on specific application requirements. For designs requiring RoHS3 compliance, select SMDA05C.TBT. For applications requiring maximum operating temperature above 125°C, select SMDB05C/TR13. For general-purpose applications within standard operating ranges, SMDA05C.TBT is preferred due to superior current handling and regulatory compliance status.