USB50812C-AE3/TR13

Part Overview

The USB50812C-AE3/TR13 is a transient voltage suppressor (TVS) diode manufactured by Microchip Technology, designed for surface mount applications in Ethernet protection circuits. This active product provides bidirectional transient suppression with a 12V reverse standoff voltage and 26V maximum clamping voltage. Alternative models may be required due to inventory constraints, specific performance requirements, or application-driven electrical parameter needs.

Substiute Parts

USB50812C-AE3/TR13

Microchip TechnologyIn Stock: 731USB50812C-AE3/TR13 Datasheet

Current PartRFQ

SMDA12C.TBT

Semtech CorporationIn Stock: 1862SMDA12C.TBT Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the USB50812C-AE3/TR13 is evaluated based on electrical and mechanical compatibility within the transient voltage suppressor category. The critical parameters determining substitutability are:

Electrical Parameters:

• Voltage - Reverse Standoff: 12V nominal
• Voltage - Breakdown (Min): 13.3V minimum
• Package / Case: 8-SOIC footprint compatibility
• Mounting Type: Surface Mount

Mechanical Parameters:

• Package dimensions: 8-SOIC (0.154", 3.90mm Width)
• Supplier Device Package: 8-SO

The SMDA12C.TBT from Semtech Corporation meets these core electrical and mechanical requirements, maintaining identical reverse standoff voltage (12V), breakdown voltage threshold (13.3V), and physical package specifications (8-SOIC).

Parameter Comparison

Engineering Selection Recommendations

Both the USB50812C-AE3/TR13 and SMDA12C.TBT are active products with ROHS3 compliance and REACH unaffected status. The SMDA12C.TBT offers higher peak pulse current capability (12A versus 5A) and maintains the same electrical thresholds for reverse standoff (12V) and breakdown voltage (13.3V). The maximum clamping voltage of the SMDA12C.TBT is 24V compared to 26V for the USB50812C-AE3/TR13, representing a 2V reduction at peak current. The SMDA12C.TBT operates to 125°C maximum junction temperature, compared to 150°C for the USB50812C-AE3/TR13. Selection should be based on circuit requirements for maximum clamping voltage, peak pulse current handling, and operating temperature range.

Frequently Asked Questions (FAQ)

Q: Are the USB50812C-AE3/TR13 and SMDA12C.TBT pin-to-pin compatible? Both devices use the 8-SOIC package with identical physical dimensions (0.154", 3.90mm Width). Pin configuration compatibility requires verification against application schematics and the respective manufacturer datasheets.

Q: What are the key differences in electrical performance between these parts? The primary differences are clamping voltage (USB50812C-AE3/TR13: 26V vs SMDA12C.TBT: 24V) and peak pulse current rating (USB50812C-AE3/TR13: 5A vs SMDA12C.TBT: 12A). Both maintain identical 12V reverse standoff voltage and 13.3V minimum breakdown voltage.

Q: Can the SMDA12C.TBT replace the USB50812C-AE3/TR13 in all applications? Substitution compatibility depends on circuit requirements. The SMDA12C.TBT accommodates higher transient currents but clamps at a lower voltage. Applications requiring the 26V clamping voltage or 150°C operating temperature of the USB50812C-AE3/TR13 may not be suitable for substitution.

Q: Are both parts suitable for Ethernet protection applications? The USB50812C-AE3/TR13 is specified for Ethernet applications. The SMDA12C.TBT is designated for general purpose applications. Application compatibility should be confirmed with circuit requirements.

Q: What is the difference in packaging between these parts? The USB50812C-AE3/TR13 is supplied in Tape & Reel (TR) format, while the SMDA12C.TBT is supplied in Cut Tape (CT) and Digi-Reel® format. Both use identical 8-SO package specifications.