USB50824C/TR13

Part Overview

The USB50824C/TR13 is a Transient Voltage Suppressor (TVS) diode manufactured by Microchip Technology, designed for transient overvoltage protection in Ethernet applications. This bidirectional, 2-channel surface-mount device operates across an extended temperature range of -55°C to 150°C and maintains Active product status. Identification of equivalent substitute parts is necessary when the primary manufacturer part becomes unavailable or when supply chain optimization is required while maintaining electrical and mechanical compatibility.

Substiute Parts

USB50824C/TR13

Microchip TechnologyIn Stock: 1195USB50824C/TR13 Datasheet

Current PartRFQ

LCDA24.TBT

Semtech CorporationIn Stock: 3957LCDA24.TBT Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the USB50824C/TR13 is permissible with the LCDA24.TBT based on alignment of the following critical electrical and mechanical parameters:

Matching Parameters (Critical for Substitution):

• Reverse Standoff Voltage: 24V (maintained across both parts)
• Breakdown Voltage (Min): 26.7V (identical)
• Peak Pulse Current: 5A (8/20µs) (identical)
• Package / Case: 8-SOIC (0.154", 3.90mm Width) (identical)
• Bidirectional Channels: 2 (identical)
• Mounting Type: Surface Mount (identical)
• Supplier Device Package: 8-SO (identical)

Parameters Permitting Variation:

• Voltage - Clamping (Max) @ Ipp: 57V (USB50824C/TR13) versus 55V (LCDA24.TBT) - acceptable variance within application tolerance
• Power - Peak Pulse: 500W (USB50824C/TR13) versus 300W (LCDA24.TBT) - power capability difference requiring application assessment
• Operating Temperature Range: -55°C ~ 150°C (USB50824C/TR13) versus -55°C ~ 125°C (LCDA24.TBT) - operating envelope difference
• Capacitance @ 1MHz: 3pF (USB50824C/TR13) versus 5pF (LCDA24.TBT) - acceptable variance for general suppression applications

Parameter Comparison

Engineering Selection Recommendations

Primary Part - USB50824C/TR13 (Microchip Technology): Suitable for applications requiring the full -55°C to 150°C operating temperature range and maximum peak pulse power of 500W. This part maintains Active product status from Microchip Technology. RoHS compliance is not available for this part.

Substitute Part - LCDA24.TBT (Semtech Corporation): The LCDA24.TBT provides equivalent protection performance with identical critical voltage and current parameters. This part achieves ROHS3 compliance and is suitable for applications with operating temperatures not exceeding 125°C and peak pulse power requirements within the 300W specification. Both manufacturers maintain Active product status, ensuring ongoing availability and support.

Selection Criteria:

• If temperature operation above 125°C is required, the USB50824C/TR13 is the required selection.
• If peak pulse power exceeds 300W, the USB50824C/TR13 is the required selection.
• If RoHS3 compliance is mandated, the LCDA24.TBT is the required selection.
• For general-purpose transient suppression in Ethernet applications within the specified operating envelope, both parts are functionally equivalent.

Frequently Asked Questions (FAQ)

Q: Can the LCDA24.TBT directly replace the USB50824C/TR13 in all applications? A: Direct replacement is permissible only when application requirements satisfy all specification limits of the LCDA24.TBT. The reduced operating temperature maximum (125°C versus 150°C) and lower peak pulse power (300W versus 500W) must be verified against circuit requirements.

Q: Are the package footprints identical between these parts? A: Yes. Both parts use the 8-SOIC (0.154", 3.90mm Width) package with identical physical dimensions and Surface Mount mounting type, permitting PCB layout reuse without modification.

Q: What is the significance of the voltage clamping difference (57V versus 55V)? A: Both values fall within acceptable suppression performance for Ethernet transient protection applications. The 2V difference represents a 3.5% variance and does not typically impact circuit functionality where either clamp voltage is within design specifications.

Q: How do the capacitance specifications affect circuit performance? A: The capacitance difference (3pF versus 5pF @ 1MHz) is negligible for most circuit applications. Higher capacitance may introduce marginally increased switching noise in high-frequency sensitive circuits, though the 2pF difference is within acceptable limits for general-purpose suppression.

Q: Which part should be selected if supply constraints exist? A: The LCDA24.TBT maintains higher inventory levels (3,888 Pcs versus 1,144 Pcs) and achieves ROHS3 compliance, supporting longer-term supply chain sustainability when application parameters permit its use.

Q: Are there pin compatibility concerns between the two parts? A: No pin compatibility concerns exist. Both parts are bidirectional 2-channel TVS diodes in identical 8-SO packages with matching electrical interface requirements.