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Vishay General Semiconductor - Diodes Division TPSMA11AHE3_A/I
- Part No.:
- TPSMA11AHE3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
TPSMA11AHE3_A/I.pdf
- Description:
- TVS DIODE 9.4VWM 15.6VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:9,587
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Product details
Overview
TPSMA11AHE3_A/I from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor (TVS) diode designed for clamping inductive switching transients and lightning-induced surges on power rails and signal lines. It features a 11.0 V nominal breakdown voltage (VBR), 9.40 V stand-off voltage (VWM), 25.6 V maximum clamping voltage (VC) at 5.0 A peak pulse current, 400 W peak pulse power (10/1000 µs), and operates up to +185 °C junction temperature - ideal for automotive power rail protection.
For engineers reviewing the TPSMA11AHE3_A/I datasheet, TPSMA11AHE3_A/I pinout, TPSMA11AHE3_A/I application, or TPSMA11AHE3_A/I equivalent, key selection criteria include its AEC-Q101 qualification, SMA (DO-214AC) package compatibility with high-reliability PCB layouts, unidirectional polarity, and verified clamping performance under repetitive 0.01% duty cycle surge conditions.
Technical Context
This TVS diode employs passivated anisotropic rectifier technology optimized for high-temperature stability and low incremental surge resistance. Its junction design enables reliable operation at TJ = 185 °C and meets MSL Level 1 per J-STD-020 with 260 °C reflow peak tolerance.
The device delivers fast response time and excellent clamping ratio (VC/VBR ≈ 2.33), validated under standardized 10/1000 µs waveform testing. It is rated for 40 A non-repetitive forward surge current (IFSM) and exhibits only 1.0 µA reverse leakage at VWM = 9.40 V and TJ = 150 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 10.5 V / 11.0 V / 11.6 V - ensures precise overvoltage triggering above system operating voltage |
| VWM | 9.40 V - maximum continuous reverse voltage before leakage exceeds 1.0 µA |
| VC @ IPPM = 5.0 A | 25.6 V - clamped voltage during worst-case surge, limiting downstream IC stress |
| PPPM | 400 W - peak surge power handling capability with 10/1000 µs waveform |
| TJ max. | +185 °C - supports under-hood automotive and industrial high-temp environments |
| Polarity | Unidirectional - protects against positive-going transients only; cathode marked |
| Package | SMA (DO-214AC) - industry-standard SMD footprint with 0.2" × 0.2" copper pad thermal requirement |
Pinout & Package
TPSMA11AHE3_A/I uses the SMA (DO-214AC) surface-mount package with two terminals: cathode (marked by color band) and anode. The package measures 4.93 mm × 3.99 mm × 2.29 mm (L × W × H) and requires minimum 5.0 mm × 5.0 mm copper pads per terminal for rated power dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Surge current sink | Connected to protected line; conducts during overvoltage events to shunt energy to ground |
| Anode | Reference/return path | Typically tied to system ground or lower-potential rail; completes clamping path |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, humidity, and mechanical shock |
| Junction passivation | Reduces surface leakage and improves long-term stability under high-humidity conditions |
| MSL Level 1 rating | Enables single-reflow assembly without moisture sensitivity concerns (peak 260 °C) |
| Low clamping ratio (VC/VBR) | 2.33 - minimizes voltage overshoot during transient suppression, protecting sensitive 12 V logic |
| 185 °C TJ max. | Supports placement near heat sources (e.g., power converters, motor drivers) without derating |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs from load dump and alternator ripple transients. IC Role / Device Role / Timing Role: Unidirectional TVS diode clamping positive surges on main power input. Use Value: Limits voltage to ≤25.6 V during 400 W surges, preventing damage to downstream DC/DC regulators and microcontrollers. | Use Scenario: Shielding analog sensor outputs (e.g., pressure, temperature) from ESD and cable discharge events. IC Role / Device Role / Timing Role: Fast-response transient suppressor placed at connector interface. Use Value: Sub-nanosecond response and 1.0 µA leakage at 9.4 V preserve signal integrity and ADC accuracy. |
| Consumer Power Adapter Input Protection | Telecom Equipment Surge Suppression |
Use Scenario: Safeguarding AC-DC adapter primary-side rectifier output against line surges. IC Role / Device Role / Timing Role: Standoff-rated TVS absorbing repetitive 10/1000 µs transients. Use Value: 0.01% duty cycle rating enables sustained operation in mains-connected applications. | Use Scenario: Protecting Ethernet PHY interfaces and PoE injectors from lightning-induced common-mode surges. IC Role / Device Role / Timing Role: Unidirectional clamp on DC bias lines feeding active components. Use Value: 185 °C rating ensures reliability in sealed telecom enclosures with limited airflow. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ11A | Same VBR (11.1 V typ), but SMB package (DO-214AA); 600 W PPPM; higher VC = 18.2 V @ 32.4 A | Larger footprint; better suited for higher-energy surges where board space allows | Select SMBJ11A when surge energy exceeds 400 W and layout accommodates larger SMB outline |
| 1.5SMC11A | Same VBR, but SMC (DO-214AB) package; 1500 W PPPM; VC = 18.2 V @ 82.4 A; higher IFSM = 200 A | Requires larger pad layout; intended for industrial mains-level protection | Choose 1.5SMC11A for primary-side AC line protection where higher surge immunity is mandatory |
Compared with SMBJ11A and 1.5SMC11A, the TPSMA11AHE3_A/I offers optimal balance of compact SMA footprint, AEC-Q101 qualification, and 400 W surge rating - making it preferred for space-constrained automotive and embedded power rail designs where 185 °C operation is required.
Availability
TPSMA11AHE3_A/I is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor systems, and consumer power adapter designs requiring stable component supply, AEC-Q101 compliance, and high-temperature reliability.
Supply support for TPSMA11AHE3_A/I includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Vishay General Semiconductor is a global leader in discrete semiconductors, specializing in diodes, rectifiers, MOSFETs, and protection devices with emphasis on reliability and high-temperature performance.
The TPSMA series belongs to Vishay's PAR® (Protected Anisotropic Rectifier) transient voltage suppressor family, engineered specifically for robust, high-temperature surge protection in automotive and industrial environments.
FAQ
What is the breakdown voltage tolerance for TPSMA11AHE3_A/I?
The TPSMA11AHE3_A/I has a specified breakdown voltage range of 10.5 V (minimum) to 11.6 V (maximum) at 1.0 mA test current, with a nominal value of 11.0 V. This ±5% tolerance ensures consistent clamping behavior across production lots and supports reliable overvoltage threshold setting in 12 V systems.
Is TPSMA11AHE3_A/I RoHS-compliant and halogen-free?
Yes, TPSMA11AHE3_A/I carries the HE3 suffix, indicating it is RoHS-compliant and AEC-Q101 qualified. However, it is not halogen-free; for halogen-free compliance, the HM3 suffix variant (e.g., TPSMA11AHM3_A/I) must be selected per Vishay's ordering nomenclature.
What is the maximum clamping voltage of TPSMA11AHE3_A/I under surge conditions?
The maximum clamping voltage (VC) of TPSMA11AHE3_A/I is 25.6 V at a peak pulse current (IPPM) of 5.0 A using the standard 10/1000 µs waveform. This value is guaranteed across temperature and ensures downstream circuitry remains within safe operating limits during transient events.
Can TPSMA11AHE3_A/I be used in bidirectional configurations?
No, TPSMA11AHE3_A/I is unidirectional only, as confirmed in the Vishay datasheet. It protects against positive-going transients only. For bidirectional protection, a dedicated bidirectional TVS such as TPSMA11CA must be used - it is not interchangeable with TPSMA11AHE3_A/I without circuit redesign.
What is the thermal resistance junction-to-ambient (RθJA) for TPSMA11AHE3_A/I?
Vishay does not publish a standalone RθJA value for TPSMA11AHE3_A/I. Thermal performance is defined by its 1.0 W steady-state power dissipation rating on 0.2" × 0.2" copper pads. Derating curves in Figure 2 show that usable power drops to ~0.5 W at 100 °C ambient, confirming thermal design must follow recommended pad layout to achieve rated performance.
TPSMA11AHE3_A/I Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AC, SMA
- Series:
- PAR®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- 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
- Supplier Device Package:
- DO-214AC (SMA)
TPSMA11AHE3_A/I FAQ
1.How can I place an order for TPSMA11AHE3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMA11AHE3_A/I on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for TPSMA11AHE3_A/I reliable?
The price and inventory of TPSMA11AHE3_A/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPSMA11AHE3_A/I is usually 5 days.
3.What payment methods are accepted for TPSMA11AHE3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMA11AHE3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMA11AHE3_A/I?
TPSMA11AHE3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMA11AHE3_A/I order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for TPSMA11AHE3_A/I?
For technical support, including TPSMA11AHE3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMA11AHE3_A/I requirements.
6.How does Aetrix verify that TPSMA11AHE3_A/I is sourced from the original manufacturer or authorized distributors?
All TPSMA11AHE3_A/I products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that TPSMA11AHE3_A/I meets industry standards.
7.What is the process for return or replacement of TPSMA11AHE3_A/I?
All TPSMA11AHE3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with TPSMA11AHE3_A/I, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The TPSMA11AHE3_A/I part is unused and in its original packaging.
Return procedure for TPSMA11AHE3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPSMA11AHE3_A/I Tags
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