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Home > Products > Circuit Protection > Transient Voltage Suppressors (TVS) - TVS Diodes > SP1112-01UTG
Littelfuse Inc.
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SP1112-01UTG

In Stock 1891279 pcs Reference Price(In US Dollars)
1+
$0.0345
200+
$0.0134
500+
$0.013
1000+
$0.0127
Manufacturer Part Number:
SP1112-01UTG
Manufacturer / Brand
Littelfuse Inc.
Part of Description:
TVS DIODE 12VWM 26.5VC 2DFN
Datasheets:
SP1112-01UTG.pdf
Lead Free Status / RoHS Status:
ROHS3 Compliant
Stock Condition:
New original, 1891279 pcs Stock Available.
ECAD Model:
Ship From:
Hong Kong
Shipment Way:
DHL/Fedex/TNT/UPS

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Part Number SP1112-01UTG
Manufacturer / Brand Littelfuse Inc.
Stock Quantity 1891279 pcs Stock
Category Circuit Protection > Transient Voltage Suppressors (TVS) - TVS Diodes
Description TVS DIODE 12VWM 26.5VC 2DFN
Lead Free Status / RoHS Status: ROHS3 Compliant
Voltage - Reverse Standoff (Typ) 12V (Max)
Voltage - Clamping (Max) @ Ipp 26.5V (Typ)
Voltage - Breakdown (Min) -
Unidirectional Channels 1
Type Zener
Supplier Device Package 2-DFN (1.6x1)
Series SPA®
Power Line Protection No
Power - Peak Pulse -
Package / Case 0603 (1610 Metric)
Package Tape & Reel (TR)
Operating Temperature -40°C ~ 125°C (TA)
Mounting Type Surface Mount
Current - Peak Pulse (10/1000µs) 40A (8/20µs)
Capacitance @ Frequency 230pF @ 1MHz
Applications General Purpose

Packaging & ESD

Industry-standard static shielding packaging is used for electronic components.Anti-static, light-transparent materials allow easy identification of ICs and PCB assemblies.
The packaging structure provides electrostatic protection based on Faraday cage principles.This helps protect sensitive components from static discharge during handling and transportation.


All products are packed in ESD-safe anti-static packaging. Outer packaging labels include part number, brand, and quantity for clear identification. Goods are inspected prior to shipment to ensure proper condition and authenticity.

ESD protection is maintained throughout packing, handling, and global transportation. Secure packaging provides reliable sealing and resistance during transit. Additional cushioning materials are applied when required to protect sensitive components.

QC(Part Testing by IC Components)Quality Warranty

We can offer worldwide express delivery service, such as DHLor FedEx or TNT or UPS or other forwarder for shipment.

Global Shipment by DHL/FedEx/TNT/UPS

Shipping Fees reference DHL/FedEx
1). You can offer your express delivery account for shipment, ifyou haven’t any express account for shipment, we can offer our account inadvance.
2). Use our account for shipment, Shipment charges(Reference DHL/FedEx, Different Countries has different price.)
Shipment charges： (Reference DHL and FedEX)
Weight(KG): 0.00kg-1.00kg Price(USD$) : USD$60.00
Weight(KG): 1.00kg-2.00kg Price(USD$) : USD$80.00
* The price of cost is reference with DHL/FedEx. The detail charges, please contact us. Different country the express charges are different.



We accept the payment terms: Telegraphic Transfer(T/T), Credit Card, PayPal and Western Union.

PayPal:

PayPal Bank Information:
Company Name : IC COMPONENTS LTD
Paypal ID: Info@IC-Components.com

BANK TRANSFAR (Telegraphic Transfer)

Payment For Telegraphic Transfers:
Company Name : IC COMPONENTS LTD Beneficiary Account Number : 549-100669-701
Beneficiary Bank name : Bank of Communications (Hong Kong) Ltd Beneficiary Bank Code : 382 (for local payment)
Beneficiary Bank SWIFT : COMMHKHK
Beneficiary Bank Address : Tsuen Wan Market Street Branch 53 Market Street, Tsuen Wan N.T., Hong Kong

Any inquires or questions, please kindly contact us Email: Info@IC-Components.com


Frequently Asked Questions

Can SP1112-01UTG be used directly on a 12 V industrial or automotive-style rail that may sit above 12 V during normal operation?
SP1112-01UTG is best suited for a line whose normal operating voltage stays below its 12 V reverse standoff level with margin for tolerance, ripple, and startup overshoot. If the rail can remain at 12.2 V, 13.5 V, or higher for extended periods, the device may conduct leakage or start clamping earlier than desired. In that case, a higher-standoff TVS or a front-end protection scheme with series impedance, pre-regulation, or a higher-voltage suppressor is usually a better fit for SP1112-01UTG replacement decisions.
Where should SP1112-01UTG be placed on the PCB to get the expected surge clamp behavior?
SP1112-01UTG should be placed as close as possible to the connector or cable entry point, with a short, wide path to the protected net and a very low-inductance return path to ground or chassis. Long traces, narrow neck-downs, and extra vias add inductance that raises the effective clamping voltage during fast transients. For SP1112-01UTG, the layout often matters as much as the device rating when the goal is to protect an external interface or power input from ESD and inductive spikes.
Is SP1112-01UTG suitable for high-speed data lines such as USB, HDMI, Ethernet, or LVDS?
SP1112-01UTG is usually not the first choice for very high-speed differential interfaces because its 230 pF capacitance can load the line and degrade edge rate, impedance, or eye opening. It is better aligned with lower-speed control signals, power rails, general-purpose I/O, or lines where added capacitance is acceptable. For SP1112-01UTG on a data path, designers often need to verify signal integrity with simulation or lab testing; otherwise a much lower-capacitance ESD diode is typically used.
Can SP1112-01UTG replace a larger TVS such as SMAJ12A or SMBJ12A in an existing design?
SP1112-01UTG can be used as a replacement only if the surge environment, footprint, and thermal requirements all fit the smaller 2-DFN/0603-style package. Compared with SMAJ12A or SMBJ12A, SP1112-01UTG generally offers a smaller footprint and lower parasitic inductance, but it also has less thermal mass and may be less forgiving for repetitive high-energy surges. When migrating from SP1112-01UTG to a larger package or vice versa, check the actual pulse waveform, PCB copper area, and any downstream voltage-sensitive IC limits.
What should I do if the line protected by SP1112-01UTG can see negative transients or reverse polarity?
SP1112-01UTG is a unidirectional TVS, so it is normally used on positive rails or signals where the primary concern is positive-going surge suppression. If the line can swing significantly negative, see reverse battery, or needs symmetric protection, a bidirectional TVS or an additional protection stage is more appropriate. For SP1112-01UTG in reverse-polarity-prone systems, designers often add a series diode, ideal-diode controller, fuse, or eFuse depending on the fault mode.
How do I know whether SP1112-01UTG has enough surge capability for my application?
SP1112-01UTG is rated around 40 A for an 8/20 µs pulse, which aligns well with ESD, EFT, and many short transient events, but it is not a substitute for load-dump or sustained fault protection. If your system can produce higher-energy surges, repeated inductive events, or long-duration overvoltage, the TVS may overheat or clamp too long for the protected circuit. In those cases, SP1112-01UTG is often paired with upstream current limiting, a fuse, or a higher-energy suppressor.
Is SP1112-01UTG a good fit for industrial equipment that runs 24/7?
SP1112-01UTG can be used in long-life industrial designs when the operating voltage, surge repetition rate, and board temperature are within range. The device’s -40 °C to 125 °C operating window and MSL 1 packaging help with manufacturing and field deployment, but repetitive surge loading still needs attention because cumulative self-heating can shift clamp behavior over time. For SP1112-01UTG in continuous-duty equipment, designers typically verify thermal margin, surge frequency, and the worst-case ambient temperature around the PCB.
Should SP1112-01UTG be used by itself, or does it need a fuse or series resistor?
SP1112-01UTG is a transient suppressor, not an overcurrent protection device, so it usually should not be relied on as the only protection element when the source can deliver substantial fault current. On power inputs, a fuse, PTC, resistor, or active current-limited front end often helps keep the TVS within its safe operating envelope during abnormal events. For SP1112-01UTG, the surrounding protection network determines whether the design survives a transient without overstressing the diode or the downstream load.

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