SMDB24C/TR13 Equivalent & Substitute Parts

Part Overview

The SMDB24C/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 bidirectional channels, designed for general-purpose transient voltage protection applications. The device is currently in active production status with 1144 pieces available in original inventory.

Substitute parts are identified when equivalent electrical performance and mechanical compatibility are maintained across the specified parameter set. Alternative sources and packaging configurations may be required due to inventory availability, supply chain considerations, or specific application packaging requirements.

Substiute Parts

SMDB24C/TR13

Microchip TechnologyIn Stock: 1166SMDB24C/TR13 Datasheet

Current PartRFQ

SMDA24C/TR7

Microchip TechnologyIn Stock: 1720SMDA24C/TR7 Datasheet

DirectRFQ

SMDB24C/TR7

Microchip TechnologyIn Stock: 2089SMDB24C/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 classification for the SMDB24C/TR13 is determined by the following critical parameters:

Primary Substitution Criteria:

• Voltage - Reverse Standoff (Typ): 24V
• Voltage - Breakdown (Min): 26.7V
• Voltage - Clamping (Max) @ Ipp: 43V
• Current - Peak Pulse (8/20µs): 5A
• Power - Peak Pulse: 300W
• Bidirectional Channels: 4
• Package / Case: 8-SOIC (0.154", 3.90mm Width)
• Mounting Type: Surface Mount

Direct Substitutes maintain all primary electrical parameters and identical channel configuration. These parts are interchangeable at the circuit level with no design modifications required.

Similar Substitutes maintain core voltage and current ratings but may differ in secondary parameters such as capacitance, operating temperature range, channel count, or clamping voltage. These parts require engineering evaluation for specific application constraints.

Parameter Comparison

Engineering Selection Recommendations

Direct Substitutes (SMDA24C/TR7 and SMDB24C/TR7):

The SMDA24C/TR7 and SMDB24C/TR7 are direct electrical equivalents to the SMDB24C/TR13. Both parts maintain identical voltage ratings, current specifications, channel configuration, and operating temperature range. The primary distinction is packaging format: SMDA24C/TR7 is supplied in Tape & Reel format, while SMDB24C/TR7 is supplied in Cut Tape format. Both Microchip Technology parts retain the same RoHS non-compliant status as the main part. Selection between these direct substitutes depends on procurement requirements and assembly line compatibility with either tape format.

Similar Substitutes (SMDA24C-7.TBT and SMDA24C.TBT):

The Semtech Corporation parts SMDA24C-7.TBT and SMDA24C.TBT provide functional equivalence with documented parameter variations:

• SMDA24C-7.TBT: Maintains 43V clamping voltage but features seven bidirectional channels (versus four in the main part) and reduced maximum operating temperature (125°C versus 150°C). This part is RoHS Compliant.

• SMDA24C.TBT: Maintains four bidirectional channels but specifies 55V clamping voltage (versus 43V in the main part) and reduced maximum operating temperature (125°C versus 150°C). This part is ROHS3 Compliant.

Selection of Semtech parts requires confirmation that the application tolerates the specified parameter deviations. The SMDA24C.TBT higher clamping voltage may provide additional protection margin in certain transient scenarios but represents a design change from the original specification. The reduced operating temperature maximum of 125°C excludes these parts from applications requiring the full -55°C to 150°C range.

All substitute parts maintain the same 8-SOIC package footprint, surface-mount configuration, and general-purpose application classification as the main part.

Frequently Asked Questions (FAQ)

Q: Can SMDA24C/TR7 be used as a direct replacement for SMDB24C/TR13?

A: Yes. SMDA24C/TR7 is a direct electrical equivalent with identical voltage ratings (24V standoff, 26.7V breakdown minimum, 43V clamping maximum), current specifications (5A peak pulse), power rating (300W), channel configuration (4 bidirectional channels), and operating temperature range (-55°C to 150°C). The only difference is the packaging format (Tape & Reel versus the original Tape & Reel designation). Both are Microchip Technology products with identical RoHS status.

Q: What is the difference between SMDB24C/TR7 and SMDA24C/TR7?

A: Both parts are Microchip Technology TVS diodes with identical electrical specifications. The primary difference is packaging format: SMDB24C/TR7 is supplied in Cut Tape format, while SMDA24C/TR7 is supplied in Tape & Reel format. Selection depends on assembly equipment compatibility and procurement preferences.

Q: Can Semtech SMDA24C-7.TBT be used instead of the Microchip SMDB24C/TR13?

A: SMDA24C-7.TBT maintains the core voltage and current specifications but differs in two parameters: it features seven bidirectional channels (versus four) and has a maximum operating temperature of 125°C (versus 150°C). This part is RoHS Compliant. Use is conditional on the application not requiring the full 150°C operating range and tolerating the increased channel count.

Q: What is the significance of the 55V clamping voltage in SMDA24C.TBT?

A: The SMDA24C.TBT specifies a maximum clamping voltage of 55V, compared to 43V in the main part and other direct substitutes. This represents a higher voltage threshold at which the device clamps transient events. This parameter difference constitutes a design change and requires engineering evaluation to confirm compatibility with the protected circuit's voltage tolerance specifications.

Q: Are all substitute parts available in the same 8-SOIC package?

A: Yes. All substitute parts listed are housed in the 8-SOIC package (0.154", 3.90mm width) with surface-mount configuration. PCB footprint compatibility is maintained across all alternatives.

Q: What is the difference in RoHS compliance between the main part and substitutes?

A: The main part SMDB24C/TR13 and the Microchip direct substitutes (SMDA24C/TR7 and SMDB24C/TR7) are RoHS non-compliant. The Semtech alternatives differ: SMDA24C-7.TBT is RoHS Compliant, and SMDA24C.TBT is ROHS3 Compliant. Selection of RoHS-compliant alternatives may be required for applications subject to environmental or regulatory restrictions.

Q: Can capacitance differences between parts affect circuit performance?

A: The main part specifies 45pF capacitance at 1MHz. Direct substitutes maintain this specification. Semtech alternatives specify 50pF at 1MHz. This 5pF difference is minor and typically does not affect general-purpose transient protection applications. However, circuits with specific impedance or frequency-dependent requirements should evaluate this parameter.

Q: What inventory levels are available for each substitute?

A: Current inventory levels are: SMDB24C/TR13 (1144 pcs), SMDA24C/TR7 (1688 pcs), SMDB24C/TR7 (2010 pcs), SMDA24C-7.TBT (1620 pcs), and SMDA24C.TBT (10400 pcs). Inventory status may change; verification with the supplier is recommended for procurement planning.