SMDA05C/TR7 Equivalent & Substitute Parts Reference

Part Overview

The SMDA05C/TR7 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 4 bidirectional channels in an 8-SOIC package. The device is designed for general-purpose transient voltage suppression applications and maintains Active product status. Equivalent and substitute parts are identified to address packaging format variations, inventory availability, and manufacturer alternatives while maintaining electrical and mechanical compatibility.

Substiute Parts

SMDA05C/TR7

Microchip TechnologyIn Stock: 891SMDA05C/TR7 Datasheet

Current PartRFQ

SMDA05C-4-2E3/TR7

Microchip TechnologyIn Stock: 1900SMDA05C-4-2E3/TR7 Datasheet

DirectRFQ

SMDB05CE3/TR7

Microchip TechnologyIn Stock: 1840SMDB05CE3/TR7 Datasheet

DirectRFQ

SMDA05C.TBT

Semtech CorporationIn Stock: 8161SMDA05C.TBT Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SMDA05C/TR7 is determined by the following critical parameters:

Electrical Compatibility Requirements:

• Voltage - Reverse Standoff (Typ): 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

Packaging Format Variations: Substitute parts may differ in packaging format (Cut Tape vs. Tape & Reel) without affecting electrical performance. The SMDA05C/TR7 is supplied in Cut Tape (CT) format; equivalent parts in Tape & Reel (TR) format maintain identical electrical specifications.

Manufacturer Alternatives: Parts from alternative manufacturers (Semtech Corporation) are included when electrical parameters align with the primary specifications, subject to documented performance characteristics within the defined parameter ranges.

Parameter Comparison

Engineering Selection Recommendations

Direct Equivalents (Microchip Technology):

SMDA05C-4-2E3/TR7 and SMDB05CE3/TR7 are direct electrical equivalents to the SMDA05C/TR7. These parts maintain identical electrical specifications across all critical parameters: voltage ratings, peak pulse current, power dissipation, and operating temperature range. The primary distinction is packaging format (Tape & Reel vs. Cut Tape), which does not affect component performance. Both parts carry Active product status and ROHS3 compliance certification. Selection between these Microchip variants is based on procurement and assembly requirements rather than electrical performance.

Alternative Manufacturer (Semtech Corporation):

SMDA05C.TBT from Semtech Corporation provides electrical compatibility with the SMDA05C/TR7 for voltage suppression function. This part maintains identical voltage ratings (5V standoff, 6V breakdown, 11V clamping) and package form factor (8-SOIC). However, the Semtech alternative exhibits the following parameter differences:

• Peak Pulse Current: 17A (vs. 5A in Microchip parts)
• Capacitance @ 1MHz: 350pF (vs. 200pF in Microchip parts)
• Maximum Operating Temperature: 125°C (vs. 150°C in Microchip parts)

The Semtech part is suitable for applications where higher peak pulse current capability is beneficial. The elevated capacitance value may affect high-frequency circuit behavior. The reduced upper operating temperature limit restricts use in high-temperature environments. ROHS3 compliance and MSL 1 rating are maintained.

All substitute parts carry Active product status and meet REACH and ECCN compliance requirements identical to the main part.

Frequently Asked Questions (FAQ)

Q: Can SMDA05C-4-2E3/TR7 directly replace SMDA05C/TR7 in production assembly?

A: Yes. SMDA05C-4-2E3/TR7 is electrically and mechanically identical to SMDA05C/TR7. The only difference is packaging format (Tape & Reel vs. Cut Tape). Both parts are compatible with standard 8-SOIC surface-mount assembly processes. Substitution requires no circuit design changes.

Q: What is the difference between SMDB05CE3/TR7 and SMDA05C/TR7?

A: SMDB05CE3/TR7 and SMDA05C/TR7 are electrical equivalents with identical voltage ratings, current ratings, and operating temperature ranges. Both use the 8-SOIC package. The difference lies in the base product number designation (SMDB05 vs. SMDA05) and packaging format. Electrical performance in circuit is equivalent.

Q: Is the Semtech SMDA05C.TBT a suitable replacement for the Microchip SMDA05C/TR7?

A: SMDA05C.TBT from Semtech is electrically compatible for the core TVS function (5V standoff, 11V clamping). However, three parameter differences exist: (1) Peak pulse current is 17A versus 5A, (2) Capacitance is 350pF versus 200pF, and (3) maximum operating temperature is 125°C versus 150°C. Substitution is valid only if the application does not require the full 150°C operating range and if the higher capacitance does not degrade circuit performance at operating frequencies.

Q: Are all substitute parts RoHS compliant?

A: Yes. SMDA05C-4-2E3/TR7, SMDB05CE3/TR7, and SMDA05C.TBT all carry ROHS3 compliance certification, matching the main part SMDA05C/TR7.

Q: What does MSL 1 (Unlimited) mean for moisture sensitivity?

A: MSL 1 (Unlimited) indicates the component has no moisture sensitivity restrictions. These parts can be stored indefinitely without desiccant packaging and do not require baking before reflow soldering. All listed parts carry this rating.

Q: Can I use SMDA05C.TBT in a high-temperature application requiring 150°C operation?

A: No. SMDA05C.TBT has a maximum operating temperature of 125°C (TJ). For applications requiring operation up to 150°C, use SMDA05C/TR7, SMDA05C-4-2E3/TR7, or SMDB05CE3/TR7, all of which support -55°C to 150°C operation.

Q: Do all parts use the same 8-SOIC package footprint?

A: Yes. All listed parts use the 8-SOIC package with 0.154" (3.90mm) width. PCB footprints and assembly processes are identical across all substitutes.