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KS8993F
Microchip Technology
IC 10/100 INTEG SWITCH 128PQFP
1467 Pcs New Original In Stock
10/100 Integrated Switch 128-PQFP (14x20)
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5.0 / 5.0
- (59 Ratings)
KS8993F
Product Overview
11672571
DiGi Electronics Part Number
KS8993F-DGManufacturer
Microchip Technology
KS8993F
Description
IC 10/100 INTEG SWITCH 128PQFPInventory
1467 Pcs New Original In Stock
10/100 Integrated Switch 128-PQFP (14x20)
Quantity
Minimum 1
Minimum 1
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KS8993F Technical Specifications
Category
Specialized ICs
Packaging
-
Series
-
Product Status
Obsolete
DiGi-Electronics Programmable
Not Verified
Type
10/100 Integrated Switch
Applications
Port Switch/Network Interface
Mounting Type
Surface Mount
Package / Case
128-BFQFP
Supplier Device Package
128-PQFP (14x20)
Base Product Number
KS8993
Datasheet & Documents
Datasheets
Download KS8993F Product Specification (PDF)
HTML Datasheet
KS8993F-DG
Environmental & Export Classification
RoHS Status
ROHS3 Compliant
Moisture Sensitivity Level (MSL)
3 (168 Hours)
REACH Status
REACH Unaffected
ECCN
5A991B1
HTSUS
8542.39.0001
Additional Information
Standard Package
66
Alternative Parts
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MANUFACTURER
QUANTITY AVAILABLE
DiGi PART NUMBER
UNIT PRICE
SUBSTITUTE TYPE
Reviews
5.0/5.0-(Show up to 5 Ratings)
Dec 02, 2025
항상 제시간에 도착하는 배송과 뛰어난 제품 품질 덕분에 추천하고 싶어요.
Dec 02, 2025
Die Logistik bei DiGi Electronics ist vorbildlich. Mein Paket wurde exakt termingerecht geliefert.
Dec 02, 2025
Customer support chat was helpful and responsive during my shopping journey.
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Frequently Asked Questions (FAQ)
Can I replace the obsolete KS8993F with the KSZ8993F in an existing 10/100 Ethernet switch design without hardware modifications?
The KSZ8993F is a drop-in replacement for the KS8993F and is pin-compatible in the same 128-PQFP (14x20) package, making it suitable for direct substitution in most designs. However, verify that your firmware supports any minor register map differences—Microchip provides migration guidance confirming functional equivalence. Always revalidate signal integrity on high-speed traces (e.g., MII/RMII interfaces) after replacement, especially if your board layout pushes timing margins close to spec. This swap mitigates supply chain risk from the KS8993F’s obsolete status while maintaining RoHS3 compliance and MSL 3 handling requirements.
What are the key reliability risks when designing in the KS8993F given its obsolete status and MSL 3 rating?
The primary reliability risks with the KS8993F stem from its obsolete status—long-term availability is not guaranteed, increasing redesign risk—and its MSL 3 classification, which demands strict moisture control during storage and assembly (floor life of only 168 hours after bag opening). If your production line lacks controlled humidity environments or uses batch processing that exceeds this window, you risk popcorning or latent interconnect failures. Always bake parts per J-STD-033 if exposed beyond MSL 3 limits, and consider qualifying the KSZ8993F as a second-source to avoid field failures due to component shortages.
How does the thermal performance of the KS8993F in a 128-PQFP package affect layout decisions in compact industrial Ethernet switches?
The KS8993F’s 128-PQFP (14x20 mm) package lacks an exposed thermal pad, relying solely on leadframe conduction through the PCB. In dense industrial designs, this can lead to localized heating under sustained 100 Mbps full-duplex traffic. To mitigate this, use a solid ground plane under the device, stitch it with multiple vias to inner layers, and avoid placing heat-sensitive components nearby. Thermal simulations or empirical testing under worst-case ambient temperatures (e.g., 70°C enclosure) are recommended—failure to manage junction temperature may cause intermittent link drops or reduced MTBF, especially when operating near the upper end of the commercial temperature range.
Is the KS8993F suitable for automotive Ethernet applications, and how does it compare to newer alternatives like the KSZ9031RNX?
The KS8993F is not qualified for automotive use—it lacks AEC-Q100 certification and operates only over the commercial temperature range (0°C to 70°C), making it unsuitable for under-hood or exterior vehicle applications. In contrast, the KSZ9031RNX is AEC-Q100 Grade 2 qualified (-40°C to 105°C) and includes enhanced ESD protection. If you're designing an automotive-grade switch, avoid the KS8993F entirely; instead, migrate to automotive-certified PHYs or integrated switches. Using the KS8993F in such environments risks premature failure due to thermal cycling and electrical stress, voiding system reliability.
What design constraints should I consider when integrating the KS8993F into a legacy system with RMII interface and tight BOM cost targets?
When using the KS8993F with an RMII interface, ensure your MAC supports the 50 MHz reference clock requirement and that trace lengths between the KS8993F and MAC are matched within ±50 mils to avoid setup/hold violations—critical in cost-optimized boards with minimal layer counts. The KS8993F integrates three PHYs and a switch fabric, reducing external component count versus discrete PHY solutions, but its obsolete status may increase long-term BOM risk. Validate EMI performance early, as integrated switches can exhibit higher radiated emissions than discrete designs; consider adding common-mode chokes on unused ports even if not strictly required, to avoid costly late-stage EMC re-spins.
Quality Assurance (QC)
DiGi ensures the quality and authenticity of every electronic component through professional inspections and batch sampling, guaranteeing reliable sourcing, stable performance, and compliance with technical specifications, helping customers reduce supply chain risks and confidently use components in production.
KS8993F CAD Models
Microchip Technology KS8993F PCB symbols & footprints
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