SMDA05/TR13 Equivalent & Substitute Parts

Part Overview

The SMDA05/TR13 is a Transient Voltage Suppressor (TVS) diode manufactured by Microchip Technology, part of the TVSarray™ series. This surface-mount component provides transient voltage protection with a 5V reverse standoff voltage and 11V maximum clamping voltage. The device is designed for general-purpose applications requiring ESD and surge protection in 8-SOIC packaging.

The SMDA05/TR13 is classified as an Active product with current inventory of 1,072 pieces. Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and supply chain continuity.

Substiute Parts

SMDA05/TR13

Microchip TechnologyIn Stock: 1179SMDA05/TR13 Datasheet

Current PartRFQ

SMDB05/TR7

Microchip TechnologyIn Stock: 1028SMDB05/TR7 Datasheet

DirectRFQ

SMDA05.TBT

Semtech CorporationIn Stock: 1835SMDA05.TBT Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of TVS diodes is determined by electrical and mechanical compatibility across the following critical parameters:

Electrical Compatibility Criteria:

• Voltage - Reverse Standoff (Typ): Must match or be within acceptable tolerance
• Voltage - Breakdown (Min): Must match or exceed minimum specification
• Voltage - Clamping (Max) @ Ipp: Must match or be lower to ensure protection
• Current - Peak Pulse: Must meet or exceed the application requirement
• Power - Peak Pulse: Must support the transient energy dissipation requirement
• Unidirectional Channels: Must match the circuit configuration requirement

Mechanical Compatibility Criteria:

• Package / Case: Must be identical (8-SOIC)
• Mounting Type: Must be Surface Mount
• Moisture Sensitivity Level: Must be compatible with assembly and storage requirements

Compliance Considerations:

• Product Status: Active products are preferred for long-term availability
• RoHS Status: Compliance level may differ between substitutes
• Operating Temperature Range: Must support the application's thermal requirements

The SMDA05/TR13 has two identified substitutes: SMDB05/TR7 (Microchip Technology) and SMDA05.TBT (Semtech Corporation). Both maintain identical electrical protection characteristics and package specifications, with variations in current rating and compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

SMDB05/TR7 (Microchip Technology)

The SMDB05/TR7 is a direct electrical and mechanical equivalent to the SMDA05/TR13. Both devices are manufactured by Microchip Technology and share identical voltage protection characteristics, current ratings, and package specifications. The SMDB05/TR7 maintains the same RoHS non-compliant status and operating temperature range of -55°C to 150°C. This substitute is suitable for applications where manufacturer consistency and identical performance specifications are required. Current inventory of 954 pieces supports immediate procurement.

SMDA05.TBT (Semtech Corporation)

The SMDA05.TBT is manufactured by Semtech Corporation and provides enhanced current handling capability at 17A peak pulse compared to the 5A rating of the SMDA05/TR13. Electrical protection characteristics remain identical with 5V reverse standoff and 11V clamping voltage. The SMDA05.TBT is ROHS3 compliant, offering improved environmental compliance compared to the non-compliant main part. The operating temperature range is -55°C to 125°C, which is 25°C lower than the main part's maximum. This substitute is appropriate for applications requiring higher transient current capacity and RoHS3 compliance, with the constraint that the maximum junction temperature is limited to 125°C. Current inventory of 1,800 pieces provides the highest stock availability.

Selection Criteria Summary:

• For direct replacement with identical specifications: SMDB05/TR7
• For enhanced current capacity with RoHS3 compliance: SMDA05.TBT (verify operating temperature compatibility)
• All three parts are Active products with unlimited moisture sensitivity rating

Frequently Asked Questions (FAQ)

Q: Can SMDB05/TR7 be used as a direct replacement for SMDA05/TR13?

A: Yes. The SMDB05/TR7 is electrically and mechanically equivalent. Both devices share identical voltage ratings (5V standoff, 11V clamping), current specifications (5A peak pulse), power dissipation (300W), and package configuration (8-SOIC). Both are manufactured by Microchip Technology and maintain the same RoHS non-compliant status and operating temperature range of -55°C to 150°C.

Q: What is the primary difference between SMDA05.TBT and SMDA05/TR13?

A: The SMDA05.TBT has a higher peak pulse current rating of 17A compared to 5A for the SMDA05/TR13, while maintaining identical voltage protection characteristics. Additionally, SMDA05.TBT is ROHS3 compliant whereas SMDA05/TR13 is RoHS non-compliant. The SMDA05.TBT operating temperature maximum is 125°C versus 150°C for the main part. The SMDA05.TBT is manufactured by Semtech Corporation rather than Microchip Technology.

Q: Are all three parts compatible with the same PCB layout?

A: Yes. All three parts use the 8-SOIC package with identical dimensions (0.154" width, 3.90mm). Surface-mount assembly processes and PCB footprints are interchangeable across SMDA05/TR13, SMDB05/TR7, and SMDA05.TBT.

Q: Which substitute should be selected for RoHS3 compliance?

A: The SMDA05.TBT is ROHS3 compliant. The SMDA05/TR13 and SMDB05/TR7 are both RoHS non-compliant. If RoHS3 compliance is a requirement, SMDA05.TBT is the appropriate selection, provided the operating temperature range of -55°C to 125°C meets application requirements.

Q: Can SMDA05.TBT be used in applications requiring the full -55°C to 150°C temperature range?

A: No. The SMDA05.TBT maximum junction temperature is 125°C, limiting its use to applications with maximum operating temperatures of 125°C or lower. For applications requiring operation up to 150°C, SMDA05/TR13 or SMDB05/TR7 must be used.

Q: What is the significance of the higher 17A current rating in SMDA05.TBT?

A: The 17A peak pulse current rating in SMDA05.TBT provides enhanced transient protection capability compared to the 5A rating in SMDA05/TR13. This higher current capacity allows the SMDA05.TBT to suppress larger transient events while maintaining the same 11V clamping voltage. Applications experiencing higher transient currents benefit from this enhanced rating.

Q: Are there any moisture sensitivity differences between the three parts?

A: No. All three parts have Moisture Sensitivity Level (MSL) of 1 (Unlimited), indicating no moisture sensitivity constraints for storage, handling, or assembly.

Q: Which part has the highest current inventory?

A: The SMDA05.TBT has the highest current inventory at 1,800 pieces, followed by SMDA05/TR13 at 1,072 pieces, and SMDB05/TR7 at 954 pieces.