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Vishay General Semiconductor - Diodes Division TPSMA15AHE3_A/I
- Part No.:
- TPSMA15AHE3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
TPSMA15AHE3_A/I.pdf
- Description:
- TVS DIODE 12.8VWM 21.2VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:3,404
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Product details
Overview
TPSMA15AHE3_A/I from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMA (DO-214AC) package, designed for clamping voltage transients on power and signal lines. It features a 15.0 V nominal breakdown voltage (VBR), 12.8 V stand-off voltage (VWM), 21.2 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 power supply input stages.
For engineers reviewing the TPSMA15AHE3_A/I datasheet, TPSMA15AHE3_A/I pinout, TPSMA15AHE3_A/I application, or TPSMA15AHE3_A/I equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, thermal derating behavior, clamping performance under surge conditions, and direct alternatives with documented polarity and power handling differences.
Technical Context
This TVS diode employs passivated anisotropic rectifier technology optimized for high-temperature stability and low incremental surge resistance. Its unidirectional configuration provides forward conduction only during reverse overvoltage events, with clamping action triggered when reverse voltage exceeds 15.0 V (VBR min 14.3 V).
The device meets J-STD-020 MSL Level 1 (peak reflow 260 °C), supports 40 A non-repetitive forward surge current (8.3 ms half-sine), and exhibits a positive temperature coefficient of VBR (+0.076 %/°C), enabling predictable voltage shift across operating temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 14.3 / 15.0 / 15.8 V - defines minimum voltage at which device enters avalanche breakdown under 1 mA test current |
| VWM | 12.8 V - maximum continuous reverse working voltage before leakage exceeds 1 μA |
| VC @ IPPM = 5.0 A | 21.2 V - clamped voltage seen by protected circuit during 10/1000 µs surge event |
| PPPM | 400 W - peak pulse power dissipation capability under standardized transient waveform |
| TJ max | +185 °C - enables use in under-hood automotive environments without thermal derating penalties |
| Polarity | Unidirectional - blocks forward current; conducts only during reverse overvoltage events |
| AEC-Q101 | Qualified - certified for automotive-grade reliability per stress test requirements |
Pinout & Package
SMA (DO-214AC) surface-mount package with matte tin-plated leads, cathode indicated by color band. Dimensions: 4.93 mm × 3.99 mm × 2.29 mm (L × W × H), compatible with standard SMT pick-and-place and reflow processes.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current path terminal | Connected to lower-potential side of protected line; conducts during reverse transient |
| Cathode | Avalanche clamping terminal | Connected to higher-potential side; defines polarity and clamping reference point |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation | Optimized anisotropic rectifier structure ensures stable VBR and low leakage over lifetime and temperature |
| High-temperature operation | Rated for continuous operation up to +185 °C junction temperature, supporting under-hood automotive placement |
| Clamping performance | 21.2 V clamping at 5.0 A enables robust protection of 12 V systems against ISO 7637-2 pulses |
| Surge robustness | 40 A IFSM (8.3 ms half-sine) withstands repetitive load dump events without degradation |
| Process qualification | AEC-Q101 qualified and RoHS-compliant; HE3 suffix denotes halogen-free, whisker-tested construction |
Applications
| Automotive Sensor Protection | Industrial Power Input Stage |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor front-ends from ESD and load-dump transients in vehicle ECUs. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed between signal line and ground to clamp fast-rising transients before they reach sensitive IC inputs. Use Value: 21.2 V clamping voltage ensures safe margin below 24 V rail tolerance while maintaining <1 μA leakage at 12.8 V nominal system voltage. | Use Scenario: Safeguarding AC/DC converter primary-side control ICs and MOSFET gates from switching-induced spikes in factory automation drives. IC Role / Device Role / Timing Role: Parallel-connected transient suppressor absorbing energy from inductive kickback during relay or solenoid de-energization. Use Value: 400 W peak pulse rating handles 10/1000 µs surges common in industrial 24 V DC systems without thermal runaway. |
| Consumer USB Port Protection | Telecom Line Interface |
Use Scenario: Shielding USB 2.0 data lines and VBUS against ESD events per IEC 61000-4-2 Level 4 (±15 kV contact). IC Role / Device Role / Timing Role: Low-capacitance TVS placed directly at connector to shunt ESD current before reaching USB PHY or controller. Use Value: Fast response time and 21.2 V clamping prevent latch-up in 5 V tolerant USB interface ICs during ±8 kV air discharge events. | Use Scenario: Protecting Ethernet PHYs and PoE injectors from lightning-induced surges on twisted-pair telecom lines. IC Role / Device Role / Timing Role: Bidirectional protection not applicable; this unidirectional part used on DC bias rails feeding line drivers or isolators. Use Value: 185 °C TJ rating allows placement near heat-generating magnetics without derating, critical in compact telecom modules. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ15AHE3_A/H | Same VBR (14.3–15.8 V), but SMB (DO-214AA) package - larger footprint, 600 W PPPM | Higher power handling suits 24 V industrial controls where PCB space permits larger package | Select when surge energy exceeds 400 W and layout accommodates 4.58 mm × 3.94 mm footprint |
| TPSMA15AHM3_A/I | Identical electrical specs and SMA package; HM3 suffix adds halogen-free compliance beyond HE3's RoHS/AEC-Q101 | No functional difference; required only where halogen-free material declaration is mandated in final BOM | Choose HM3 if full halogen-free certification (per IEC 61249-2-21) is contractually required |
Compared with TPSMA15AHE3_A/I, SMBJ15AHE3_A/H offers higher surge capacity in a larger package, while TPSMA15AHM3_A/I provides identical protection with added halogen-free compliance - both require no schematic change but differ in mechanical fit and material documentation scope.
Availability
TPSMA15AHE3_A/I is available at Aetrix Electronics and suitable for automotive sensor protection, industrial power input stage hardening, and consumer USB port ESD mitigation requiring stable component supply and AEC-Q101 traceability.
Supply support for TPSMA15AHE3_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, TVS devices, and optoelectronics with emphasis on reliability and high-temperature performance.
The TPSMA15AHE3_A/I belongs to Vishay's PAR® (Protection and Regulation) transient voltage suppressor family, engineered specifically for robust overvoltage protection in harsh automotive and industrial environments.
FAQ
What is the clamping voltage of the TPSMA15AHE3_A/I at its rated peak pulse current?
The TPSMA15AHE3_A/I has a maximum clamping voltage (VC) of 21.2 V when subjected to a 10/1000 µs surge waveform at 5.0 A peak pulse current (IPPM). This value is measured per JEDEC standards and guarantees that downstream circuits see no more than 21.2 V during such transient events. The TPSMA15AHE3_A/I maintains this clamping performance across its full operating temperature range, making it suitable for automotive and industrial applications where voltage margins are tight.
Is the TPSMA15AHE3_A/I AEC-Q101 qualified and what does the HE3 suffix indicate?
Yes, the TPSMA15AHE3_A/I is AEC-Q101 qualified for automotive-grade reliability. The HE3 suffix indicates RoHS-compliant construction with matte tin-plated leads, JESD201 Class 2 whisker resistance, and compliance with MSL Level 1 (260 °C peak reflow). The "A/I" in the full part number specifies packaging in 13-inch tape-and-reel format with 7500 units per reel. The TPSMA15AHE3_A/I meets all stress tests defined in AEC-Q101 including HTGB, HTRB, and temperature cycling.
How does the TPSMA15AHE3_A/I compare to bidirectional TVS diodes in terms of application suitability?
The TPSMA15AHE3_A/I is unidirectional and therefore unsuitable for AC-coupled or bipolar signal lines like RS-485 or Ethernet differential pairs. It is intended for DC-biased lines such as 12 V power rails, sensor supply lines, or single-ended digital I/O where reverse conduction must be blocked. Bidirectional alternatives would allow clamping in both polarities but sacrifice forward voltage headroom. The TPSMA15AHE3_A/I's 12.8 V VWM ensures reliable blocking during normal 12 V operation while clamping transients above 15 V.
What is the thermal derating behavior of the TPSMA15AHE3_A/I above 25 °C ambient?
The TPSMA15AHE3_A/I follows standard derating curves per Figure 2 in its datasheet: peak pulse power (PPPM) decreases linearly from 400 W at 25 °C to zero at +185 °C junction temperature. At 125 °C ambient (assuming typical board thermal resistance), usable PPPM drops to approximately 220 W. Derating is based on junction temperature, not ambient alone - proper copper pad design (0.2" × 0.2") is essential to maintain thermal performance. The TPSMA15AHE3_A/I's +185 °C TJ rating minimizes derating impact in high-temp environments.
Can the TPSMA15AHE3_A/I be used in parallel for higher surge current handling?
No, the TPSMA15AHE3_A/I is not recommended for parallel connection due to mismatch in VBR (14.3–15.8 V) and dynamic impedance, which causes uneven current sharing and potential thermal runaway. For higher surge capability, select a single higher-rated device such as SMBJ15AHE3_A/H (600 W) or 5.0SMDJ15AHE3_A/H (5000 W). The TPSMA15AHE3_A/I's design assumes standalone use with appropriate PCB layout - adding parallel devices introduces reliability risk without guaranteed benefit.
TPSMA15AHE3_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):
- 12.8V
- Voltage - Breakdown (Min):
- 14.3V
- Voltage - Clamping (Max) @ Ipp:
- 21.2V
- Current - Peak Pulse (10/1000µs):
- 18.9A
- 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)
TPSMA15AHE3_A/I FAQ
1.How can I place an order for TPSMA15AHE3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMA15AHE3_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 TPSMA15AHE3_A/I reliable?
The price and inventory of TPSMA15AHE3_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 TPSMA15AHE3_A/I is usually 5 days.
3.What payment methods are accepted for TPSMA15AHE3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMA15AHE3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMA15AHE3_A/I?
TPSMA15AHE3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMA15AHE3_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 TPSMA15AHE3_A/I?
For technical support, including TPSMA15AHE3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMA15AHE3_A/I requirements.
6.How does Aetrix verify that TPSMA15AHE3_A/I is sourced from the original manufacturer or authorized distributors?
All TPSMA15AHE3_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 TPSMA15AHE3_A/I meets industry standards.
7.What is the process for return or replacement of TPSMA15AHE3_A/I?
All TPSMA15AHE3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with TPSMA15AHE3_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 TPSMA15AHE3_A/I part is unused and in its original packaging.
Return procedure for TPSMA15AHE3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPSMA15AHE3_A/I Tags
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