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Vishay General Semiconductor - Diodes Division TPSMA11AHE3/5AT
- Part No.:
- TPSMA11AHE3/5AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
TPSMA11AHE3/5AT.pdf
- Description:
- TVS DIODE 9.4VWM 15.6VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:2,991
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Product details
Overview
TPSMA11AHE3/5AT from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor (TVS) diode designed for clamping inductive switching and lightning-induced transients on power 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 - used in automotive sensor protection and industrial I/O interface circuits.
For engineers reviewing the TPSMA11AHE3/5AT datasheet, TPSMA11AHE3/5AT pinout, TPSMA11AHE3/5AT application, or TPSMA11AHE3/5AT equivalent, key selection criteria include unidirectional polarity, SMA (DO-214AC) package compatibility, AEC-Q101 qualification status, TJ = 185 °C thermal capability, and verified clamping performance under 10/1000 μs surge conditions.
Technical Context
The TPSMA11AHE3/5AT 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 lead-free reflow peak.
It delivers precise clamping with a typical VBR tolerance of ±5 % (10.5–11.6 V), 0.067 %/°C temperature coefficient of VBR, and <1 ns response time - critical for protecting MOSFET gates and microcontroller I/O pins against fast-rising ESD and load dump events.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 10.5 V / 11.0 V / 11.6 V - ensures consistent avalanche initiation across production lots and temperature range |
| VWM | 9.40 V - maximum continuous reverse voltage before leakage exceeds 1.0 μA at 25 °C |
| VC @ IPPM = 5.0 A | 25.6 V - clamped voltage during 10/1000 μs surge, limiting stress on downstream ICs |
| PPPM | 400 W - peak pulse power handling per single 10/1000 μs waveform, derated above 25 °C |
| TJ max. | +185 °C - supports under-hood automotive and high-ambient industrial environments |
| Polarity | Unidirectional - protects against positive-going transients only; cathode band denotes polarity |
| IFSM | 40 A - withstands 8.3 ms half-sine surge without degradation, suitable for motor drive I/O |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, matte tin-plated leads, RoHS-compliant and AEC-Q101 qualified (HE3 suffix). Cathode indicated by color band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal during forward conduction | Connected to protected line (e.g., 12 V rail or signal trace) when used in clamping configuration |
| Cathode | Current exit terminal during forward conduction; avalanche node during reverse surge | Connected to ground or lower-potential reference; absorbs transient energy via controlled avalanche breakdown |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation optimized design | Enables stable VBR and low leakage (<1.0 μA at VWM) over lifetime and temperature |
| TJ = 185 °C capability | Supports AEC-Q101 qualification and operation in engine control units and powertrain modules |
| 400 W peak pulse power (10/1000 μs) | Handles automotive load dump and ISO 7637-2 Pulse 5a/b surges without failure |
| MSL Level 1, 260 °C peak reflow | Compatible with standard lead-free SMT assembly processes without moisture sensitivity concerns |
| Low incremental surge resistance | Minimizes VC overshoot during fast transients, improving protection margin for 3.3 V/5 V logic |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor outputs (e.g., pressure, temperature) from load dump and ESD in vehicle ECUs. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed between signal line and chassis ground to clamp transients before they reach sensitive input circuitry. Use Value: Maintains signal integrity with 25.6 V clamping at 5.0 A, preventing latch-up or damage to 5 V tolerant receivers while supporting AEC-Q101 reliability requirements. | Use Scenario: Safeguarding digital input channels on programmable logic controllers exposed to relay coil flyback and field wiring surges. IC Role / Device Role / Timing Role: Standoff-clamp TVS connected across input terminals to shunt induced energy during contactor switching. Use Value: Withstands repetitive 400 W pulses and operates reliably at 85 °C ambient, enabling long-term deployment in factory automation cabinets. |
| Consumer Power Adapter Surge Suppression | Telecom Line Interface Protection |
Use Scenario: Secondary-side overvoltage suppression in AC/DC adapters and USB PD chargers subjected to lightning-induced surges on DC output rails. IC Role / Device Role / Timing Role: Unidirectional clamping device placed between +VOUT and GND to limit transient excursions during open-circuit or short-circuit faults. Use Value: 9.40 V VWM allows safe operation across 9–12 V nominal outputs; 25.6 V VC prevents damage to downstream DC-DC converters and load switches. | Use Scenario: Protecting Ethernet PHY interfaces and RS-485 transceivers in base station equipment from induced surges on twisted-pair cabling. IC Role / Device Role / Timing Role: Discrete TVS mounted at connector entry point to divert common-mode transients before entering signal conditioning circuitry. Use Value: Fast sub-nanosecond response and low capacitance preserve signal integrity at 100 Mbps+ data rates while meeting IEC 61000-4-5 Level 3 immunity requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ11A | Same SMA package, 11 V VBR, but rated for 400 W with 1.0 mA test current; no AEC-Q101 qualification | Not approved for automotive use; suitable for commercial/industrial grade designs only | Select SMAJ11A only if AEC-Q101 compliance is not required and cost optimization is prioritized |
| 1.5SMC11A | Larger SMC (DO-214AB) package, identical electrical specs, 1.5 kW peak power rating | Higher power handling but requires larger PCB footprint; not drop-in compatible due to different pad layout | Choose 1.5SMC11A when higher surge margin is needed and board space permits larger package |
Compared with SMAJ11A and 1.5SMC11A, the TPSMA11AHE3/5AT uniquely combines AEC-Q101 qualification, SMA footprint, and 185 °C junction rating - making it the preferred choice for space-constrained automotive and high-reliability industrial applications where thermal robustness and automotive compliance are mandatory.
Availability
TPSMA11AHE3/5AT is available at Aetrix Electronics and suitable for automotive sensor protection, industrial PLC I/O protection, and telecom line interface protection requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for TPSMA11AHE3/5AT 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, TVS devices, and optoelectronics with emphasis on reliability, thermal performance, and automotive-grade qualification.
The TPSMA series is part of Vishay's PAR® (Protected Avalanche Rectifier) platform, engineered specifically for high-temperature, high-reliability transient suppression in automotive, industrial, and telecommunications infrastructure applications.
FAQ
What is the clamping voltage of the TPSMA11AHE3/5AT at its rated peak pulse current?
The TPSMA11AHE3/5AT has a maximum clamping voltage (VC) of 25.6 V when subjected to a 5.0 A peak pulse current (IPPM) under the standard 10/1000 μs waveform. This value is measured at TA = 25 °C with specified PCB mounting conditions (0.2" × 0.2" copper pads). The clamping performance remains stable across temperature due to its 0.067 %/°C VBR temperature coefficient, ensuring predictable protection behavior in real-world operating environments.
Is the TPSMA11AHE3/5AT AEC-Q101 qualified?
Yes, the TPSMA11AHE3/5AT is AEC-Q101 qualified. The "HE3" suffix explicitly denotes RoHS-compliant and AEC-Q101 qualified construction, validated per the Automotive Electronics Council stress test requirements. This qualification covers temperature cycling, humidity bias, mechanical shock, and surge endurance - confirming suitability for automotive powertrain, body electronics, and ADAS subsystems where reliability under harsh conditions is mandatory.
What does the "5AT" suffix mean in TPSMA11AHE3/5AT?
The "5AT" suffix in TPSMA11AHE3/5AT indicates a specific packaging and reel configuration: "5" refers to the 13-inch diameter plastic tape-and-reel format, and "AT" denotes the standard Vishay internal revision code for that manufacturing lot. This differs from "H" (7-inch reel) and aligns with Vishay's ordering nomenclature in Document Number 88405, where "TPSMA11AHE3_B/I" corresponds to the same 13″ reel variant.
Can the TPSMA11AHE3/5AT be used in bidirectional protection circuits?
No, the TPSMA11AHE3/5AT is unidirectional only, as confirmed in the Vishay datasheet. It conducts and clamps only for positive transients relative to its cathode. For bidirectional protection (e.g., AC lines or differential buses), a dedicated bidirectional TVS such as the TPSMA11CA or SMAJ11CA must be selected - the TPSMA11AHE3/5AT lacks symmetrical breakdown characteristics and will not suppress negative-going surges.
What is the maximum steady-state power dissipation of the TPSMA11AHE3/5AT?
The TPSMA11AHE3/5AT has a maximum steady-state power dissipation (PD) of 1.0 W at TA = 25 °C, derated linearly above that ambient temperature. This rating applies to continuous DC or low-frequency reverse-biased operation - not transient suppression. In normal use, the device remains in high-impedance standby (leakage <1.0 μA at 9.40 V), so actual power dissipation is negligible until a transient event triggers avalanche conduction.
TPSMA11AHE3/5AT 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)
TPSMA11AHE3/5AT FAQ
1.How can I place an order for TPSMA11AHE3/5AT through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMA11AHE3/5AT 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 TPSMA11AHE3/5AT reliable?
The price and inventory of TPSMA11AHE3/5AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPSMA11AHE3/5AT is usually 5 days.
3.What payment methods are accepted for TPSMA11AHE3/5AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMA11AHE3/5AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMA11AHE3/5AT?
TPSMA11AHE3/5AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMA11AHE3/5AT 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 TPSMA11AHE3/5AT?
For technical support, including TPSMA11AHE3/5AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMA11AHE3/5AT requirements.
6.How does Aetrix verify that TPSMA11AHE3/5AT is sourced from the original manufacturer or authorized distributors?
All TPSMA11AHE3/5AT 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 TPSMA11AHE3/5AT meets industry standards.
7.What is the process for return or replacement of TPSMA11AHE3/5AT?
All TPSMA11AHE3/5AT units undergo pre-shipment inspection (PSI). If there is an issue with TPSMA11AHE3/5AT, 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 TPSMA11AHE3/5AT part is unused and in its original packaging.
Return procedure for TPSMA11AHE3/5AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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