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TPSMA11AHE3_B/H
Vishay General Semiconductor - Diodes Division
TVS DIODE 9.4VWM 15.6VC DO214AC
2946 Pcs New Original In Stock
15.6V Clamp 25.6A Ipp Tvs Diode Surface Mount DO-214AC (SMA)
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5.0 / 5.0
- (116 Ratings)
TPSMA11AHE3_B/H
Product Overview
1044322
DiGi Electronics Part Number
TPSMA11AHE3_B/H-DGManufacturer
Vishay General Semiconductor - Diodes Division
TPSMA11AHE3_B/H
Description
TVS DIODE 9.4VWM 15.6VC DO214ACInventory
2946 Pcs New Original In Stock
15.6V Clamp 25.6A Ipp Tvs Diode Surface Mount DO-214AC (SMA)
CAD Models - PCB Symbols & Footprints
Quantity
Minimum 1
Minimum 1
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TPSMA11AHE3_B/H Technical Specifications
Category
Transient Voltage Suppressors (TVS), TVS Diodes
Packaging
Tape & Reel (TR)
Series
PAR®
Product Status
Active
Type
Zener
Unidirectional Channels
1
Voltage - Reverse Standoff (Typ)
9.4V
Voltage - Breakdown (Min)
10.5V
Voltage - Clamping (Max) @ Ipp
15.6V
Current - Peak Pulse (10/1000µs)
25.6A
Power - Peak Pulse
400W
Power Line Protection
No
Applications
-
Capacitance @ Frequency
-
Operating Temperature
-65°C ~ 185°C (TJ)
Grade
Automotive
Qualification
AEC-Q101
Mounting Type
Surface Mount
Package / Case
DO-214AC, SMA
Supplier Device Package
DO-214AC (SMA)
Base Product Number
TPSMA11
Datasheet & Documents
HTML Datasheet
TPSMA11AHE3_B/H-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
Other Names
112-TPSMA11AHE3_B/HTR
TPSMA11AHE3_B/H-DG
112-TPSMA11AHE3_B/HDKR
112-TPSMA11AHE3_B/HCT
Standard Package
1,800
Alternative Parts
PART NUMBER
MANUFACTURER
QUANTITY AVAILABLE
DiGi PART NUMBER
UNIT PRICE
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TPSMA11AHE3_A/H
Vishay General Semiconductor - Diodes Division
1117
TPSMA11AHE3_A/H-DG
0.0536
Direct
Reviews
5.0/5.0-(Show up to 5 Ratings)
грудня 02, 2025
The shipping process was straightforward and impressively quick.
грудня 02, 2025
Great attention to detail in packaging, which shows their dedication to quality.
грудня 02, 2025
We find their prices to be significantly better than many competitors.
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Frequently Asked Questions (FAQ)
What are the key design-in risks when using the TPSMA11AHE3_B/H in an automotive 12V power rail with potential load dump events?
When designing in the TPSMA11AHE3_B/H for a 12V automotive power rail, a critical risk is insufficient headroom between the normal operating voltage (typically up to 14V) and the device's maximum clamping voltage of 15.6V at 25.6A. During load dump transients (which can exceed 40V), the TPSMA11AHE3_B/H may not clamp effectively due to its 15.6V limit, risking downstream component damage. This TVS diode is better suited for signal line protection or low-energy transients rather than high-energy load dump scenarios. Always verify the expected transient energy (Ipp) and consider pairing with a higher-power stage or using a TVS like the SMAJ12A-E3/54, which has higher surge capability for power rails. Use the TPSMA11AHE3_B/H only where peak pulse currents are well below 25.6A and energy dissipation is limited.
Can the TPSMA11AHE3_B/H replace a SMAJ11A or SP1010-01UTG in a high-speed data line ESD protection circuit?
Replacing SMAJ11A with the TPSMA11AHE3_B/H is feasible in low-capacitance ESD protection applications since Vishay's TPSMA11AHE3_B/H typically exhibits low parasitic capacitance (unspecified but generally <5pF for SMA Zener TVS diodes), suitable for data lines up to ~100Mbps. However, for high-speed interfaces like USB or Ethernet, it's not recommended due to lack of specified capacitance data—use SP1010-01UTG instead, which is optimized for high-speed with controlled 0.8pF typ capacitance. The TPSMA11AHE3_B/H is AEC-Q101 qualified and reliable for automotive signal lines but ensure clamping voltage (15.6V max) won't exceed downstream IC tolerance. Validate with actual board-level ESD testing (IEC 61000-4-2) when substituting.
How does the junction temperature rating of the TPSMA11AHE3_B/H affect long-term reliability in under-hood automotive designs?
The TPSMA11AHE3_B/H supports an extended operating junction temperature range of -65°C to +185°C, which enhances reliability in under-hood automotive environments subject to thermal cycling and high ambient temperatures (e.g., >125°C). However, sustained high temperatures near the upper limit reduce device lifetime due to accelerated degradation mechanisms like bond wire fatigue or passivation layer damage. To ensure reliability, design thermal management to keep average TJ below 150°C, derate peak pulse power accordingly, and avoid PCB layouts with excessive copper pouring that impede heat dissipation. The MSL 1 rating allows indefinite floor life, but proper reflow profiling is essential to avoid thermal shock during assembly with the TPSMA11AHE3_B/H.
What are the critical trade-offs between leakage current and clamping performance when selecting the TPSMA11AHE3_B/H for battery-powered sensors?
The TPSMA11AHE3_B/H has a typical reverse standoff voltage of 9.4V, making it suitable for 9V battery-powered sensors. However, at elevated temperatures, Zener TVS diodes like the TPSMA11AHE3_B/H exhibit increased leakage current (potentially >100µA near TJ = 125°C), which can significantly impact battery life in always-on systems. For low-power sensor nodes, evaluate whether the leakage outweighs the transient protection benefit—consider switching to a low-leakage alternative like the SMF05C or using a series switch to disable the TVS during sleep. The TPSMA11AHE3_B/H provides robust 400W peak pulse handling, but reserve it for applications with moderate duty cycle exposure to ESD or short transients, not for ultra-low power always-active designs.
Is the TPSMA11AHE3_B/H robust enough for CAN bus physical layer protection in heavy-duty vehicles, and how does it compare to PTVS10UC1UR in this application?
The TPSMA11AHE3_B/H can be used for CAN bus protection in heavy-duty vehicles due to its AEC-Q101 qualification and 15.6V clamping voltage, which aligns with typical CAN transceiver high-voltage limits (often rated up to 18V). However, the PTVS10UC1UR is specifically designed for CAN FD with lower clamping voltage, tighter voltage tolerances, and specified low capacitance (15pF max), making it more suitable for high-speed CAN signals. Using the TPSMA11AHE3_B/H introduces risk of signal distortion due to uncontrolled capacitance and higher leakage in standby. If PCB space and cost allow, PTVS10UC1UR is preferred for modern CAN bus designs. The TPSMA11AHE3_B/H remains a viable option for robust ESD protection in low-speed CAN (≤125kbps) where capacitance is less critical, but verify signal integrity under real operating conditions.
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TPSMA11AHE3_B/H CAD Models
Vishay General Semiconductor - Diodes Division TPSMA11AHE3_B/H PCB symbols & footprints
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