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Vishay General Semiconductor - Diodes Division TPSMA11AHE3_B/I
- Part No.:
- TPSMA11AHE3_B/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
TPSMA11AHE3_B/I.pdf
- Description:
- TVS DIODE 9.4VWM 15.6VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:9,473
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Product details
Overview
TPSMA11AHE3_B/I from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor (TVS) in SMA (DO-214AC) package, designed for clamping inductive switching and lightning-induced transients on power/signal lines. It features 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 185 °C maximum junction temperature - deployed in automotive sensor interfaces and industrial I/O protection.
For engineers reviewing the TPSMA11AHE3_B/I datasheet, TPSMA11AHE3_B/I pinout, TPSMA11AHE3_B/I application, or TPSMA11AHE3_B/I equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification status, clamping performance under 10/1000 µs surge, thermal derating above 25 °C, and compatibility with automated SMT assembly using J-STD-002-compliant matte tin terminations.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology to achieve stable breakdown behavior up to TJ = 185 °C, enabling operation in under-hood automotive environments. Its unidirectional architecture provides low forward voltage (VF = 3.5 V at 25 A) and fast response time for transient suppression without interfering with DC bias paths.
The device is rated for 400 W peak pulse power per 10/1000 µs waveform with 0.01 % duty cycle, and exhibits low incremental surge resistance to minimize voltage overshoot during high-current transients. It meets MSL Level 1 per J-STD-020 and passes JESD 201 Class 2 whisker testing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (Nominal) | 11.0 V - precise breakdown threshold ensuring reliable triggering before downstream IC damage |
| VWM | 9.40 V - maximum continuous reverse operating voltage compatible with 9 V supply rails |
| VC @ IPPM | 25.6 V - clamped voltage at 5.0 A pulse, limiting stress on protected 24 V logic or analog circuitry |
| PPPM | 400 W - surge energy handling capability sufficient for ISO 7637-2 Pulse 1/2a/5a in automotive systems |
| TJ max. | 185 °C - enables placement near heat sources in engine control units without derating loss |
| Polarity | Unidirectional - blocks reverse leakage while allowing forward conduction for bidirectional clamp configurations |
| Package | SMA (DO-214AC) - industry-standard SMT footprint with 0.208" x 0.157" body size and 0.100" lead pitch |
Pinout & Package
SMA (DO-214AC) package with axial leads: cathode marked by color band; anode and cathode terminals are non-polarized in layout but functionally asymmetric due to unidirectional conduction path.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink node | Connected to protected line; conducts surge current to ground when VLINE exceeds VBR |
| Anode | Reference/return path | Typically tied to system ground or low-impedance return plane; completes clamping loop during overvoltage events |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation | Stable VBR drift < ±5 % over 1000 hrs at 150 °C, critical for long-life automotive modules |
| AEC-Q101 qualification | Validated for automotive-grade reliability including HTOL, TC, and ESD HBM ≥ 8 kV |
| MSL Level 1 rating | Reflow-compatible up to 260 °C peak without preconditioning, supporting standard Pb-free assembly |
| Low clamping ratio (VC/VBR) | 2.33 - tight voltage margin between trigger and clamp ensures minimal overvoltage exposure |
| Matte tin terminations | RoHS-compliant, solderable per J-STD-002, and whisker-resistant per JESD 201 Class 2 |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump and inductive kick in vehicle ECUs. IC Role / Device Role / Timing Role: Unidirectional TVS placed between signal line and chassis ground to clamp transients before they reach the transceiver's ESD protection network. Use Value: With VC = 25.6 V at 5 A and TJ = 185 °C rating, TPSMA11AHE3_B/I prevents latch-up or permanent damage during ISO 16750-2 load dump tests. | Use Scenario: Safeguarding 24 V digital input channels in programmable logic controllers against field-wiring surges and relay contact bounce. IC Role / Device Role / Timing Role: Standoff-mode protector on each isolated input channel, absorbing repetitive 400 W pulses without degradation. Use Value: 400 W peak pulse rating and 0.01 % duty cycle support withstand of multiple daily surge events across 10+ year service life in factory automation. |
| Consumer Power Adapter Input | Telecom Line Card Surge Suppression |
Use Scenario: Secondary-side transient suppression on 12 V DC output rails of wall adapters subjected to accidental short-circuit recovery spikes. IC Role / Device Role / Timing Role: Fast-response shunt element that activates within nanoseconds to limit voltage excursion during output capacitor recharge transients. Use Value: 3.5 V forward voltage enables use in series-clamp configurations; low IR leakage (<1 µA at VWM) avoids standby power penalty. | Use Scenario: Front-end protection of Ethernet PHYs and PoE injectors against lightning-induced common-mode surges on twisted-pair lines. IC Role / Device Role / Timing Role: Paired unidirectional TVS devices on differential pairs, referenced to local ground plane to divert surge energy away from sensitive PHY circuitry. Use Value: SMA package allows dense placement near RJ45 connectors; 25.6 V clamping ensures compliance with IEEE 802.3af/bt surge immunity requirements. |
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 (11.0 V), higher PPPM = 600 W, larger SMB (DO-214AA) package | Requires larger PCB pad area; better suited for higher-energy transients where space permits | Select SMBJ11A when surge energy exceeds 400 W or when thermal mass improves long-term reliability in high-ambient environments |
| 1.5SMC11A | Same VBR, PPPM = 1500 W, SMC (DO-214AB) package, higher VC = 18.2 V | Higher clamping voltage reduces protection margin; used where peak current >10 A is expected | Choose 1.5SMC11A only if system-level testing confirms 18.2 V clamping is acceptable for downstream components |
Compared with SMBJ11A and 1.5SMC11A, TPSMA11AHE3_B/I offers optimal balance of compact SMA footprint, AEC-Q101 qualification, and precise 25.6 V clamping - making it preferred for space-constrained automotive and industrial modules requiring validated reliability.
Availability
TPSMA11AHE3_B/I is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O protection, and telecom line card surge suppression requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for TPSMA11AHE3_B/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, TVS, MOSFETs, and optoelectronics with emphasis on high-reliability and automotive-grade solutions.
The TPSMA series belongs to Vishay's PAR® transient voltage suppressor product line, engineered specifically for robust, high-temperature-stable clamping in harsh-environment applications including engine control, ADAS sensors, and industrial automation.
FAQ
What is the AEC-Q101 qualification status of TPSMA11AHE3_B/I?
TPSMA11AHE3_B/I is AEC-Q101 qualified, as confirmed by Vishay's ordering code suffix "HE3", which denotes RoHS-compliant and AEC-Q101-qualified variants. This qualification covers stress tests including high-temperature operating life (HTOL), temperature cycling (TC), and human-body-model ESD (≥8 kV), validating its suitability for automotive under-hood applications.
Does TPSMA11AHE3_B/I support lead-free reflow soldering?
Yes, TPSMA11AHE3_B/I supports lead-free reflow soldering with a maximum peak temperature of 260 °C, meeting J-STD-020 MSL Level 1 requirements. Its matte tin-plated leads are solderable per J-STD-002 and have passed JESD 201 Class 2 whisker testing, ensuring reliability in Pb-free manufacturing processes.
What is the maximum clamping voltage of TPSMA11AHE3_B/I at rated surge current?
The maximum clamping voltage (VC) of TPSMA11AHE3_B/I is 25.6 V at 5.0 A peak pulse current (IPPM) under 10/1000 µs waveform conditions. This value is measured per ANSI/IEEE C62.35 and defines the upper voltage limit imposed on protected circuits during standardized surge events.
Can TPSMA11AHE3_B/I be used in bidirectional transient protection circuits?
No, TPSMA11AHE3_B/I is unidirectional only, as explicitly stated in the Vishay datasheet. For bidirectional protection, two TPSMA11AHE3_B/I devices must be connected in series opposition, or a dedicated bidirectional TVS such as SMAJ11CA should be selected instead.
What is the thermal derating behavior of TPSMA11AHE3_B/I above 25 °C ambient?
TPSMA11AHE3_B/I follows linear thermal derating above 25 °C ambient, with peak pulse power decreasing per Figure 2 in the Vishay datasheet (Document 88405). At 125 °C ambient, its PPPM is reduced to approximately 200 W, and at 175 °C, it drops to ~80 W - consistent with its 185 °C TJ max. rating.
TPSMA11AHE3_B/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:
- Active
- 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_B/I FAQ
1.How can I place an order for TPSMA11AHE3_B/I through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMA11AHE3_B/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_B/I reliable?
The price and inventory of TPSMA11AHE3_B/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_B/I is usually 5 days.
3.What payment methods are accepted for TPSMA11AHE3_B/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMA11AHE3_B/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMA11AHE3_B/I?
TPSMA11AHE3_B/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMA11AHE3_B/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_B/I?
For technical support, including TPSMA11AHE3_B/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMA11AHE3_B/I requirements.
6.How does Aetrix verify that TPSMA11AHE3_B/I is sourced from the original manufacturer or authorized distributors?
All TPSMA11AHE3_B/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_B/I meets industry standards.
7.What is the process for return or replacement of TPSMA11AHE3_B/I?
All TPSMA11AHE3_B/I units undergo pre-shipment inspection (PSI). If there is an issue with TPSMA11AHE3_B/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_B/I part is unused and in its original packaging.
Return procedure for TPSMA11AHE3_B/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPSMA11AHE3_B/I Tags
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