USB50824C-A/TR13 Equivalent & Substitute Parts

Part Overview

The USB50824C-A/TR13 is a bidirectional transient voltage suppressor (TVS) diode manufactured by Microchip Technology, designed for surface mount applications in 8-SOIC packaging. This component provides transient overvoltage protection with a 24V reverse standoff voltage and 57V maximum clamping voltage at peak pulse current. The device is classified as Active product status and is suitable for Ethernet protection applications.

Substitute parts are identified when equivalent electrical performance and mechanical compatibility are maintained across the critical protection parameters: reverse standoff voltage, breakdown voltage, clamping voltage, peak pulse current rating, and package form factor.

Substiute Parts

USB50824C-A/TR13

Microchip TechnologyIn Stock: 946USB50824C-A/TR13 Datasheet

Current PartRFQ

SMDA24C.TBT

Semtech CorporationIn Stock: 10458SMDA24C.TBT Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the USB50824C-A/TR13 is determined by strict equivalence in the following electrical and mechanical parameters:

Critical Matching Parameters:

• Reverse standoff voltage: 24V (Typ)
• Breakdown voltage minimum: 26.7V
• Package form factor: 8-SOIC surface mount
• Peak pulse current rating: 5A (8/20µs)
• Bidirectional channel configuration

Allowable Variation Parameters:

• Clamping voltage (Max) @ Ipp: Within ±10% of primary specification (57V ±5.7V)
• Power dissipation: Minimum 300W peak pulse rating
• Capacitance: Variation acceptable within application requirements
• Operating temperature range: Minimum -55°C to 125°C acceptable

The SMDA24C.TBT from Semtech Corporation meets these substitution criteria with equivalent standoff and breakdown voltages, identical package configuration, and matching peak pulse current specifications. Clamping voltage differential (55V vs. 57V) remains within acceptable engineering tolerance for transient suppression applications.

Parameter Comparison

Engineering Selection Recommendations

Primary Part: USB50824C-A/TR13

Selection criteria:

• Active product status with established supply chain (836 pcs in stock)
• Maximum operating temperature to 150°C supports high-temperature applications
• Peak pulse power rating of 500W provides margin for transient energy absorption
• Established Ethernet application history
• RoHS non-compliant status requires verification against end-product regulatory requirements

Substitute Part: SMDA24C.TBT

Selection criteria:

• Active product status with higher inventory availability (10,400 pcs in stock)
• ROHS3 compliance eliminates regulatory restriction for RoHS-mandated applications
• Equivalent electrical protection parameters for 24V standoff applications
• 8-SOIC package compatibility enables direct PCB layout substitution
• Four bidirectional channels provide additional protection paths compared to two-channel primary part
• Operating temperature range to 125°C suitable for standard industrial applications
• Lower peak pulse power rating (300W) requires verification against specific transient energy profiles

Substitution Applicability:

The SMDA24C.TBT is suitable as a direct substitute when:

• Application operating temperature does not exceed 125°C
• Peak transient energy does not exceed 300W dissipation capability
• RoHS3 compliance is required or preferred
• Additional protection channels (4 vs. 2) do not create circuit interaction issues

The USB50824C-A/TR13 remains the primary selection when:

• Operating temperature range to 150°C is required
• Peak pulse power margin of 500W is necessary
• RoHS non-compliance is acceptable for the application

Frequently Asked Questions (FAQ)

Q: Can SMDA24C.TBT replace USB50824C-A/TR13 in existing designs without PCB modification?

A: Yes. Both components use identical 8-SOIC (0.154", 3.90mm Width) surface mount packaging. Pin-to-pin compatibility and footprint equivalence enable direct substitution without PCB layout changes.

Q: What is the significance of the 2V difference in clamping voltage (57V vs. 55V)?

A: The clamping voltage differential represents 3.5% variation. For transient suppression applications, this difference remains within acceptable engineering tolerance. Both values maintain effective overvoltage protection at the 24V standoff level. Application-specific transient profiles determine whether this variation impacts performance.

Q: Why does SMDA24C.TBT have higher capacitance (50pF vs. 3pF)?

A: Capacitance variation results from different semiconductor junction designs between manufacturers. Higher capacitance may affect high-frequency signal integrity in sensitive applications. Verification is required for applications operating above 100 MHz or requiring minimal capacitive loading.

Q: Is the SMDA24C.TBT suitable for applications requiring 150°C operation?

A: No. SMDA24C.TBT maximum operating temperature is 125°C. Applications requiring sustained operation above 125°C must use USB50824C-A/TR13 or identify alternative components with extended temperature ratings.

Q: What does the four-channel configuration of SMDA24C.TBT provide compared to the two-channel USB50824C-A/TR13?

A: The four-channel design provides additional independent protection paths. This configuration supports protection of multiple signal lines or differential pairs within a single package. Verify circuit topology compatibility to ensure additional channels do not create unintended current paths.

Q: Does RoHS3 compliance of SMDA24C.TBT affect electrical performance?

A: No. RoHS3 compliance addresses material composition and hazardous substance restrictions, not electrical characteristics. Electrical performance parameters remain independent of RoHS status.

Q: What is the impact of 300W vs. 500W peak pulse power rating on substitution suitability?

A: Peak pulse power rating indicates maximum transient energy the device can dissipate safely. Applications with transient energy profiles exceeding 300W require the 500W-rated USB50824C-A/TR13. Standard Ethernet protection typically operates within 300W limits, making SMDA24C.TBT suitable for conventional applications.

Q: Are both parts available in the same packaging format (Tape & Reel)?

A: USB50824C-A/TR13 is supplied in Tape & Reel (TR) format. SMDA24C.TBT is supplied in Cut Tape (CT) and Digi-Reel® format. Verify packaging compatibility with assembly equipment and procurement specifications before substitution.