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SMF16A-HM3-08
Vishay General Semiconductor - Diodes Division
TVS DIODE 16VWM 26VC SMF
3300 Pcs New Original In Stock
26V Clamp 7.7A Ipp Tvs Diode Surface Mount DO-219AB (SMF)
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SMF16A-HM3-08
Product Overview
1035678
DiGi Electronics Part Number
SMF16A-HM3-08-DGManufacturer
Vishay General Semiconductor - Diodes Division
SMF16A-HM3-08
Description
TVS DIODE 16VWM 26VC SMFInventory
3300 Pcs New Original In Stock
26V Clamp 7.7A Ipp Tvs Diode Surface Mount DO-219AB (SMF)
CAD Models - PCB Symbols & Footprints
Quantity
Minimum 1
Minimum 1
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SMF16A-HM3-08 Technical Specifications
Category
Transient Voltage Suppressors (TVS), TVS Diodes
Packaging
Tape & Reel (TR)
Series
eSMP®
Product Status
Active
Type
Zener
Unidirectional Channels
1
Voltage - Reverse Standoff (Typ)
16V
Voltage - Breakdown (Min)
17.8V
Voltage - Clamping (Max) @ Ipp
26V
Current - Peak Pulse (10/1000µs)
7.7A
Power - Peak Pulse
200W
Power Line Protection
No
Applications
-
Capacitance @ Frequency
343pF @ 1MHz
Operating Temperature
-65°C ~ 175°C (TJ)
Grade
Automotive
Qualification
AEC-Q101
Mounting Type
Surface Mount
Package / Case
DO-219AB
Supplier Device Package
DO-219AB (SMF)
Base Product Number
SMF16
Datasheet & Documents
HTML Datasheet
SMF16A-HM3-08-DG
Environmental & Export Classification
RoHS Status
ROHS3 Compliant
Moisture Sensitivity Level (MSL)
1 (Unlimited)
REACH Status
REACH Unaffected
ECCN
EAR99
HTSUS
8541.10.0080
Additional Information
Standard Package
30,000
Alternative Parts
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MANUFACTURER
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DiGi PART NUMBER
UNIT PRICE
SUBSTITUTE TYPE
Reviews
5.0/5.0-(Show up to 5 Ratings)
грудня 02, 2025
I am pleased with how they handle post-purchase inquiries—fast and professional.
грудня 02, 2025
Affordable, friendly, and trustworthy—DiGi Electronics checks all the boxes.
грудня 02, 2025
Their responsiveness and professionalism created a fantastic first shopping experience for me.
грудня 02, 2025
DiGi Electronics maintains a high standard of punctuality for all shipments.
грудня 02, 2025
The speed of shipment is truly remarkable—keeps us ahead in our plans.
грудня 02, 2025
The craftsmanship and build quality are truly commendable at DiGi Electronics.
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Frequently Asked Questions (FAQ)
Can the SMF16A-HM3-08 TVS diode safely replace a bidirectional TVS in a 12V automotive power rail protection circuit, and what design risks should I consider?
The SMF16A-HM3-08 is a unidirectional TVS diode rated for 16V reverse standoff and 26V max clamping voltage, making it suitable for protecting 12V automotive rails against positive transients like load dump. However, it cannot clamp negative voltage spikes (e.g., from inductive load switching or reverse battery connection), which bidirectional TVS diodes handle. If your system lacks other negative transient protection (e.g., series diode or TVS), using the SMF16A-HM3-08 alone risks device damage during negative surges. Always verify that your application’s threat model includes only positive overvoltage events or add complementary negative clamping. For bidirectional needs, consider Vishay’s SMAJ16CA instead.
How does the 343pF capacitance of the SMF16A-HM3-08 affect signal integrity in high-speed CAN or LIN bus applications, and is it acceptable for 1 Mbps communication?
With 343pF of parasitic capacitance at 1MHz, the SMF16A-HM3-08 can distort high-speed differential signals like those in CAN FD or 1 Mbps CAN networks if placed directly across the bus lines. This capacitance increases rise/fall times and may cause signal reflections or bit errors, especially on long stubs or poorly terminated lines. While acceptable for slower LIN buses (<20 kbps), it’s marginal for 1 Mbps CAN. Consider lower-capacitance alternatives like the SMAJ16A (typically <100pF) or use the SMF16A-HM3-08 only on non-critical power lines, not data lines. Always simulate or bench-test eye diagrams when integrating into high-speed interfaces.
Is the SMF16A-HM3-08 a drop-in replacement for the SMF16A-TP in existing PCB layouts, and are there any reliability or qualification differences I should evaluate?
Mechanically, the SMF16A-HM3-08 and SMF16A-TP share the same DO-219AB (SMF) package and pinout, enabling drop-in replacement. However, the SMF16A-HM3-08 carries AEC-Q101 automotive qualification and is rated for -65°C to +175°C junction temperature, while the SMF16A-TP may have lower temp range or non-automotive grading. If your design requires automotive-grade reliability (e.g., ISO 16750 compliance), the HM3 version is superior. Also, confirm reel compatibility: HM3 uses tape-and-reel (TR) packaging, whereas TP may use cut tape. Always cross-check moisture sensitivity (MSL 1 for both) and ensure your assembly process aligns with the specific part’s handling requirements.
What derating guidelines should I apply when using the SMF16A-HM3-08 in high-temperature engine compartment environments approaching 150°C ambient?
Although the SMF16A-HM3-08 has a max junction temperature of 175°C, sustained operation near this limit drastically reduces reliability. At 150°C ambient, thermal resistance (RθJA ≈ 300°C/W for SMF package) limits usable power dissipation to near zero—meaning even minor leakage or repetitive pulses can cause thermal runaway. Derate clamping performance aggressively: assume reduced surge capability above 125°C. For engine compartment use, either add heatsinking (not typical for SMF), select a higher-power package (e.g., SMA or SMB), or implement system-level cooling. Monitor actual junction temperature via thermal modeling and consider redundant protection schemes to mitigate single-point failure risks.
Can I parallel two SMF16A-HM3-08 diodes to increase peak pulse current handling beyond 7.7A in a 24V industrial input protection stage?
Paralleling SMF16A-HM3-08 diodes is not recommended due to inherent manufacturing tolerances in breakdown voltage (±5% typical), which cause uneven current sharing during fast transients. Even minor mismatches can lead to one diode conducting most of the 7.7A+ surge, exceeding its 200W peak power rating and causing premature failure. Additionally, the 16V standoff voltage is too low for reliable 24V rail protection—transients may trigger false clamping or degrade the diode over time. Instead, select a higher-voltage TVS like the SMF36A-HM3-08 (36V standoff) or use a single, appropriately rated device such as the SMBJ24A for 24V systems. Always prioritize monolithic solutions over paralleling for surge protection.
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SMF16A-HM3-08 CAD Models
Vishay General Semiconductor - Diodes Division SMF16A-HM3-08 PCB symbols & footprints
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