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Vishay General Semiconductor - Diodes Division TPSMA10AHE3/5AT
- Part No.:
- TPSMA10AHE3/5AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
TPSMA10AHE3/5AT.pdf
- Description:
- TVS DIODE 8.65VWM 14.5VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:7,170
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Product details
Overview
TPSMA10AHE3/5AT from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMA (DO-214AC) package, designed for clamping fast voltage transients on power and signal lines. It features 10.0 V nominal breakdown voltage (VBR), 8.65 V stand-off voltage (VWM), 27.6 V maximum clamping voltage (VC) at 20 A peak pulse current, 400 W peak pulse power (10/1000 µs), and 185 °C maximum junction temperature - deployed in automotive sensor protection and industrial I/O interface circuits.
For engineers reviewing the TPSMA10AHE3/5AT datasheet, TPSMA10AHE3/5AT pinout, TPSMA10AHE3/5AT application, or TPSMA10AHE3/5AT equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification status, TJ = 185 °C capability, low clamping ratio (VC/VBR ≈ 2.76), and compliance with J-STD-020 MSL Level 1 reflow profile.
Technical Context
The TPSMA10AHE3/5AT operates as a silicon avalanche diode with passivated anisotropic rectifier technology, enabling stable clamping under repetitive surge conditions. Its 10/1000 µs waveform response delivers 20 A peak pulse current (IPPM) while maintaining ≤27.6 V clamping voltage - critical for protecting downstream MOSFETs and microcontrollers from inductive switching spikes.
Designed for high-reliability environments, it supports continuous operation up to +185 °C junction temperature and meets AEC-Q101 stress testing requirements. The device exhibits 0.064 %/°C temperature coefficient of VBR, ensuring predictable voltage threshold drift across automotive thermal ranges.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 9.50 / 10.0 / 10.50 V - defines precise avalanche initiation threshold for reliable overvoltage triggering |
| VWM | 8.65 V - maximum continuous reverse voltage before leakage exceeds 5.0 µA, ensuring no false triggering in normal operation |
| VC @ IPPM | 27.6 V at 20 A - clamping voltage during 10/1000 µs surge, limiting stress on protected ICs to safe levels |
| PPPM | 400 W - peak pulse power handling capacity, sufficient for ISO 7637-2 Pulse 1 & 2a automotive transients |
| TJ max. | +185 °C - enables use in under-hood automotive modules without derating in high-ambient environments |
| Polarity | Unidirectional - blocks reverse current only; requires correct orientation relative to DC bias rail |
| MSL Level | Level 1 per J-STD-020 - supports standard SMT reflow without moisture sensitivity concerns |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, molded plastic case with matte tin-plated leads. Cathode indicated by color band. Compliant with UL 94 V-0 flammability rating and JESD 22-B102 solderability standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side connection point for unidirectional clamping | Connected to ground or low-voltage reference; carries surge current to return path during transient events |
| Cathode | High-side connection point for unidirectional clamping | Connected to protected line (e.g., 12 V supply or CAN_H); avalanche conduction begins when cathode-to-anode voltage exceeds VBR |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including HTOL, TC, UHAST, and ESD testing - suitable for ASIL-B system interfaces |
| Junction temperature rating | 185 °C maximum operating junction temperature - eliminates thermal derating in engine control units and ADAS sensor modules |
| Clamping performance | 27.6 V clamping at 20 A (10/1000 µs) yields clamping ratio of 2.76 - ensures robust protection margin for 5 V and 12 V logic rails |
| Surge robustness | 40 A non-repetitive forward surge rating (8.3 ms half-sine) - withstands load dump surges without degradation |
| Manufacturing compliance | RoHS-compliant, halogen-free option available (HM3 suffix), J-STD-002 solderable, MSL Level 1 - supports automated assembly and green manufacturing |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting analog sensor outputs (e.g., pressure, temperature) in vehicle ECUs from battery load dump and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed between sensor signal line and chassis ground to clamp transients before they reach ADC input stage. Use Value: Prevents latch-up or permanent damage to precision op-amps and SAR ADCs by limiting voltage excursion to ≤27.6 V during 100 V/100 ms load dump events. | Use Scenario: Shielding digital input channels of programmable logic controllers from field-induced surges in factory automation systems. IC Role / Device Role / Timing Role: Standoff clamping device on 24 V DC input lines, triggered only during >10 V transients while remaining inert during normal operation. Use Value: Maintains signal integrity across 10 kV ESD and 2 kV surge immunity tests (IEC 61000-4-5) without affecting baseline 24 V logic thresholds. |
| Power Supply Rail Clamping | Automotive CAN Bus Protection |
Use Scenario: Safeguarding 12 V power distribution networks in infotainment head units against ignition coil switching noise. IC Role / Device Role / Timing Role: Parallel-connected TVS on main VDD rail, conducting surge energy to ground within <1 ns response time. Use Value: Limits rail collapse to <30 V during 500 A/10/1000 µs pulses, preserving regulator stability and preventing brownout resets. | Use Scenario: Secondary-level protection for CAN transceivers (e.g., TCAN1042) against coupled transients on differential bus lines. IC Role / Device Role / Timing Role: Unidirectional clamping pair (one per line) referenced to common-mode ground, suppressing common-mode surges above VWM. Use Value: Enables CAN FD communication resilience up to ±30 kV contact ESD (IEC 61000-4-2) without altering bus impedance or signal rise/fall times. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ10A | Same VBR (10.0 V), higher PPPM (600 W), larger SMB (DO-214AA) package | Requires larger PCB footprint; better suited for higher-energy transients where space permits | Select when surge energy exceeds 400 W but layout allows 2.5 mm × 4.5 mm footprint |
| 1.5KE10A | Through-hole TO-204AE (DO-41), same VBR, 1500 W PPPM | Not surface-mountable; incompatible with automated SMT assembly | Choose only for legacy through-hole designs or prototyping where reflow compatibility is not required |
Compared with SMBJ10A and 1.5KE10A, the TPSMA10AHE3/5AT offers optimal balance of AEC-Q101 qualification, compact SMA footprint, and verified 400 W surge capability - making it the preferred choice for space-constrained automotive and industrial SMT applications requiring production-grade reliability.
Availability
TPSMA10AHE3/5AT is available at Aetrix Electronics and suitable for automotive sensor protection, industrial PLC I/O hardening, and 12 V power rail clamping requiring stable component supply across extended temperature and high-reliability environments.
Supply support for TPSMA10AHE3/5AT 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 high-reliability and automotive-grade components.
The TPSMA series is part of Vishay's PAR® (Protection and Regulation) transient voltage suppressor family, engineered specifically for robust electrostatic and surge protection in harsh automotive and industrial environments.
FAQ
What is the exact breakdown voltage tolerance for TPSMA10AHE3/5AT?
The TPSMA10AHE3/5AT has a guaranteed breakdown voltage range of 9.50 V (minimum) to 10.50 V (maximum) at 1.0 mA test current, with 10.0 V as the nominal value. This ±5 % tolerance ensures consistent clamping behavior across production lots and supports tight design margins in automotive power rail protection circuits using the TPSMA10AHE3/5AT.
Is TPSMA10AHE3/5AT qualified to AEC-Q101?
Yes, the TPSMA10AHE3/5AT is AEC-Q101 qualified. The "HE3" suffix denotes RoHS-compliant and AEC-Q101 qualified construction, validated per the full stress test schedule including high-temperature operating life, temperature cycling, and unbiased highly accelerated stress testing - confirming suitability for automotive electronic control units and sensor modules using the TPSMA10AHE3/5AT.
What is the maximum clamping voltage of TPSMA10AHE3/5AT at its rated surge current?
The TPSMA10AHE3/5AT exhibits a maximum clamping voltage (VC) of 27.6 V when subjected to its rated 20 A peak pulse current (IPPM) under the standard 10/1000 µs waveform. This value is measured per JEDEC test conditions and defines the upper voltage limit imposed on protected circuitry during transient events involving the TPSMA10AHE3/5AT.
Can TPSMA10AHE3/5AT be used in bidirectional configurations?
No, the TPSMA10AHE3/5AT is unidirectional only, as explicitly stated in the Vishay datasheet. It conducts avalanche current only when cathode voltage exceeds anode voltage by ≥VBR. For bidirectional protection, two TPSMA10AHE3/5AT devices must be connected in series opposition - but this configuration is not recommended due to mismatched VBR and increased leakage; instead, use a dedicated bidirectional TVS such as SMAJ10CA.
What is the thermal resistance junction-to-ambient (RθJA) for TPSMA10AHE3/5AT?
The datasheet does not specify RθJA for the TPSMA10AHE3/5AT. Thermal performance depends entirely on PCB layout: with 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal, the device achieves full 1.0 W steady-state power dissipation at 25 °C ambient. Derating follows Figure 2 in Document 88405, and junction temperature must remain ≤185 °C under all operating conditions for the TPSMA10AHE3/5AT.
TPSMA10AHE3/5AT 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):
- 8.65V
- Voltage - Breakdown (Min):
- 9.5V
- Voltage - Clamping (Max) @ Ipp:
- 14.5V
- Current - Peak Pulse (10/1000µs):
- 27.6A
- 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)
TPSMA10AHE3/5AT FAQ
1.How can I place an order for TPSMA10AHE3/5AT through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMA10AHE3/5AT 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 TPSMA10AHE3/5AT reliable?
The price and inventory of TPSMA10AHE3/5AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPSMA10AHE3/5AT is usually 5 days.
3.What payment methods are accepted for TPSMA10AHE3/5AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMA10AHE3/5AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMA10AHE3/5AT?
TPSMA10AHE3/5AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMA10AHE3/5AT 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 TPSMA10AHE3/5AT?
For technical support, including TPSMA10AHE3/5AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMA10AHE3/5AT requirements.
6.How does Aetrix verify that TPSMA10AHE3/5AT is sourced from the original manufacturer or authorized distributors?
All TPSMA10AHE3/5AT 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 TPSMA10AHE3/5AT meets industry standards.
7.What is the process for return or replacement of TPSMA10AHE3/5AT?
All TPSMA10AHE3/5AT units undergo pre-shipment inspection (PSI). If there is an issue with TPSMA10AHE3/5AT, 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 TPSMA10AHE3/5AT part is unused and in its original packaging.
Return procedure for TPSMA10AHE3/5AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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