Replacement for SMA4F40AY: Drop-In Alternatives We Stock
Looking for a replacement for the SMA4F40AY (SMA4F40AY - STMicroelectronics ESD Suppressors / TVS Diodes Automotive 400 W, 40 V TVS in SMA Flat)? Pro Disk Network ships drop-in replacements and equivalent modern parts from US inventory. Every alternate below is in-stock today with same-day shipping for orders placed before 2pm ET. If your unit is still under warranty, contact our engineering team — we offer cross-shipping for B2B customers on Net 30 terms.
About the SMA4F40AY
| SKU | SMA4F40AY |
|---|---|
| Product | SMA4F40AY - STMicroelectronics ESD Suppressors / TVS Diodes Automotive 400 W, 40 V TVS in SMA Flat |
| Stock status | In Stock |
| Detail page | View SMA4F40AY › |
Drop-in replacements for SMA4F40AY
Each part below is currently in our US warehouse, ships same-day for orders before 2pm ET, and includes our 90-day warranty. SKUs link to the full product page with photos, datasheets and B2B quote form.
APDAM3B - Cheetah Mounts Dual Articulating Arm TV Wall Mount Bracket for 20-65 Inch TVs up to VESA 400
SKU: APDAM3B
Price: $61.88
HDD2E02 - Toshiba Automotive 40GB 4200RPM ATA-100 8MB Cache 2.5-inch Hard Disk Drive
SKU: HDD2E02
Price: $199.51
HDD2G01 - Toshiba Automotive 40GB 4200RPM IDE / ATA-100 8MB Cache 2.5-inch Hard Drive
SKU: HDD2G01
Price: $224.61
HDD2G20 - Toshiba Automotive 40GB 4200RPM ATA-100 8MB Cache 2.5-inch Hard Disk Drive
SKU: HDD2G20
Price: $270.54
MK4036GACE - Toshiba Automotive 40GB 4200RPM ATA-100 8MB Cache 2.5-inch Hard Disk Drive
SKU: MK4036GACE
Price: $278.72
HDD2E33 - Toshiba Automotive 40GB 4200RPM ATA-100 8MB Cache 2.5-inch Hard Disk Drive
SKU: HDD2E33
Price: $281.80
MK4050GAC - Toshiba Automotive 40GB 4200RPM ATA-7 2.5-inch Hard Disk Drive
SKU: MK4050GAC
Price: $282.20
HDD2E31 - Toshiba Automotive 40GB 4200RPM ATA-100 8MB Cache 2.5-inch Hard Disk Drive
SKU: HDD2E31
Price: $401.07
HDD2G13 - Toshiba Automotive 40GB 4200RPM ATA-100 8MB Cache 2.5-inch Hard Disk Drive
SKU: HDD2G13
Price: $556.74
HDD2G19 - Toshiba Automotive 40GB 4200RPM ATA-100 8MB Cache 2.5-inch Hard Disk Drive
SKU: HDD2G19
Price: $712.37
How we pick replacements
Every recommendation above was selected using these criteria:
- Drop-in compatibility — same form factor (2.5"/3.5", PCIe slot, SFP port, etc.), so it fits the original chassis without modification
- Equivalent or better performance — matched on RPM/IOPS/speed/throughput, never downgraded
- Same-brand-preferred — we list the OEM-equivalent first when available, then trusted aftermarket
- Warranty coverage — 90-day Pro Disk warranty on every part, with 1-year option for B2B
- In stock today — never recommend a part that is on backorder
Need help confirming compatibility?
Our engineers validate every replacement against your specific server, switch, or chassis model before shipment. Email sales@prodisknetwork.com with your platform model (e.g., Dell PowerEdge R740, HP DL380 Gen10, Cisco Catalyst 9300) and we will confirm the exact part number that drops into your hardware.