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Home > Products > Circuit Protection > Transient Voltage Suppressors (TVS) - TVS Diodes > P6SMB39AHR5G
TSC (Taiwan Semiconductor)
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P6SMB39AHR5G

In Stock 345764 pcs Reference Price(In US Dollars)
1+
$0.1888
200+
$0.0731
500+
$0.0706
850+
$0.0693
Manufacturer Part Number:
P6SMB39AHR5G
Manufacturer / Brand
TSC (Taiwan Semiconductor)
Part of Description:
TVS DIODE 33.3V 53.9V DO214AA
Datasheets:
P6SMB39AHR5G.pdf
Lead Free Status / RoHS Status:
Lead free / RoHS Compliant
Stock Condition:
New original, 345764 pcs Stock Available.
ECAD Model:
Ship From:
Hong Kong
Shipment Way:
DHL/Fedex/TNT/UPS

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Part Number P6SMB39AHR5G
Manufacturer / Brand TSC (Taiwan Semiconductor)
Stock Quantity 345764 pcs Stock
Category Circuit Protection > Transient Voltage Suppressors (TVS) - TVS Diodes
Description TVS DIODE 33.3V 53.9V DO214AA
Lead Free Status / RoHS Status: Lead free / RoHS Compliant
Voltage - Reverse Standoff (Typ) 33.3V
Voltage - Clamping (Max) @ Ipp 53.9V
Voltage - Breakdown (Min) 37.1V
Unidirectional Channels 1
Type Zener
Supplier Device Package DO-214AA (SMB)
Standard Package 850
Series Automotive, AEC-Q101, P6SMB
Power Line Protection No
Power - Peak Pulse 600W
Part Status Active
Packaging Tape & Reel (TR)
Package / Case DO-214AA, SMB
Operating Temperature -55°C ~ 150°C (TJ)
Mounting Type Surface Mount
Moisture Sensitivity Level (MSL) 1 (Unlimited)
Manufacturer Standard Lead Time 12 Weeks
Lead Free Status / RoHS Status Lead free / RoHS Compliant
Current - Peak Pulse (10/1000µs) 11.6A
Capacitance @ Frequency -
Applications Automotive

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.



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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 I use P6SMB39AHR5G on a 24V automotive supply that sees cranking and alternator spikes?
P6SMB39AHR5G is generally a better fit for 24V nominal rails than for 12V rails, because its 33.3V reverse-standoff level leaves normal 24V operation margin while still reacting to fast surge events. In practice, check the highest continuous bus voltage, including charging overshoot and cold-crank recovery, to make sure the line does not sit near the onset of leakage. For severe events such as load-dump-like transients or repeated surge stress, P6SMB39AHR5G is usually only one element of the protection stack; a series impedance, fuse, or upstream surge element may still be needed.
Would P6SMB39AHR5G work on a 12V system, or is it too high for that rail?
P6SMB39AHR5G is usually not the first choice for a 12V rail, because the 33.3V reverse-standoff point is much higher than the normal operating range. That means it will not begin clamping until the transient rises well above what many 12V electronics can tolerate. For 12V design-in, engineers often select a lower-standoff TVS so the protected circuit sees less overvoltage before clamping begins.
How should I use P6SMB39AHR5G on a line that can see reverse polarity or negative surge events?
P6SMB39AHR5G is a unidirectional TVS, so it is most suitable when the line is expected to see positive surge stress referenced to ground. For lines that can be driven below ground, or for interfaces that swing both polarities, a bidirectional TVS or an additional reverse-polarity protection stage is usually a better fit. In reverse conduction, the device behaves like a forward diode, so system-level negative-voltage tolerance still has to be checked against the rest of the circuit.
What PCB layout details affect how well P6SMB39AHR5G clamps a surge?
Keep P6SMB39AHR5G as close as possible to the connector or entry point, with a short, low-inductance return to chassis or signal ground. Long traces, narrow neck-downs, and extra vias add inductance, which can let the protected node overshoot before the diode fully conducts. For surge performance, the copper path around the device often matters as much as the nominal 600W pulse rating.
Can P6SMB39AHR5G replace an SMBJ39A from Littelfuse, Vishay, or another SMB-size TVS?
P6SMB39AHR5G may be a candidate replacement for SMBJ39A-class parts only if the electrical curves, package, and qualification requirements line up. The footprint in DO-214AA is compatible with many SMB-size devices, but the reverse-standoff, breakdown spread, and clamping curve can differ by vendor and by suffix. When migrating from a Littelfuse SMBJ39A, Vishay SMBJ39A, or a similar part, verify leakage at your maximum bus voltage, clamp level at the expected pulse current, and any automotive qualification needs before treating it as a drop-in.
Is P6SMB39AHR5G a good choice for protecting CAN, LIN, USB, or other data lines?
P6SMB39AHR5G is usually better suited to power or higher-voltage I/O rails than to sensitive high-speed data nets. Data interfaces are often limited by added capacitance, and this part does not provide a capacitance specification here, so it is difficult to predict signal loading from the name alone. For CAN, LIN, USB, Ethernet, or sensor interfaces, engineers typically select a TVS that is explicitly characterized for the signaling standard and its impedance or capacitance budget.
Do I still need a fuse, resistor, or PTC if I already use P6SMB39AHR5G?
P6SMB39AHR5G is designed for short-duration transient energy, not for sustained fault current. If the line can be accidentally tied to battery, miswired, or held in an overvoltage condition, a fuse, PTC, current-limiting resistor, or upstream power switch is still commonly used to prevent the TVS from carrying continuous current. The 11.6A pulse figure and 600W rating apply to a defined surge waveform, so they should not be used as a substitute for fault-current control.
How does P6SMB39AHR5G behave in long-life automotive or industrial equipment?
P6SMB39AHR5G is AEC-Q101: qualified and rated for -55°C to 150°C junction operation, which supports automotive-style environments, but lifetime behavior still depends on surge repetition, board temperature, and solder-joint stress. Repeated events at elevated temperature can reduce margin over time, especially if the device is mounted near heat sources or if the surge path is inductive. In validation, it is common to combine thermal cycling, surge stress, and load conditions that reflect the actual harness or field environment rather than relying on room-temperature pulse tests alone.
Can I parallel multiple P6SMB39AHR5G devices to get more surge capability?
Parallel use of P6SMB39AHR5G is generally not the first approach, because small differences in breakdown and clamping voltage can cause one device to take most of the surge current. If a higher surge rating is needed, a larger package, a higher-power TVS, or a staged protection network is usually easier to qualify than relying on current sharing between paralleled parts. If paralleling is still considered, the layout, symmetry, and pulse waveform have to be reviewed carefully, since uneven trace inductance can dominate current distribution.

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P6SMB39AHR5G

P6SMB39AHR5G

TSC (Taiwan Semiconductor)

TVS DIODE 33.3V 53.9V DO214AA

In Stock: 345764

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