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Vishay General Semiconductor - Diodes Division TPSMA15AHE3_B/I
- Part No.:
- TPSMA15AHE3_B/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
TPSMA15AHE3_B/I.pdf
- Description:
- TVS DIODE 12.8VWM 21.2VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:4,393
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Product details
Overview
TPSMA15AHE3_B/I from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor (TVS) diode in SMA (DO-214AC) package, rated for 15.0 V breakdown voltage (VBR), 12.8 V stand-off voltage (VWM), 400 W peak pulse power (10/1000 μs), 18.9 V clamping voltage at 5.0 A peak pulse current, and 185 °C maximum junction temperature - deployed for overvoltage protection of MOSFETs and ICs in automotive power supply rails.
For engineers reviewing the TPSMA15AHE3_B/I datasheet, TPSMA15AHE3_B/I pinout, TPSMA15AHE3_B/I application, or TPSMA15AHE3_B/I equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification status, 1.0 W steady-state power dissipation, low 1.0 μA reverse leakage at VWM, and compatibility with high-reliability PCB layouts using 5.0 mm × 5.0 mm copper pads.
Technical Context
This TVS diode operates as a clamping device in parallel with protected circuitry, triggering into avalanche conduction when transient voltage exceeds its 15.0 V nominal breakdown threshold. Its passivated anisotropic rectifier structure ensures stable VBR drift (0.076 %/°C) and robust surge handling up to 40 A IFSM (8.3 ms half-sine).
Designed for high-temperature environments, the TPSMA15AHE3_B/I maintains full functionality across –65 °C to +185 °C junction range and meets MSL Level 1 per J-STD-020 with 260 °C reflow peak. The HE3 suffix confirms RoHS compliance and AEC-Q101 qualification for automotive-grade deployment.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 14.3 V / 15.0 V / 15.8 V - defines precise avalanche initiation threshold under 1.0 mA test current |
| VWM | 12.8 V - maximum continuous reverse voltage before leakage exceeds 1.0 μA |
| VC @ IPPM | 18.9 V at 5.0 A - clamped voltage during 400 W transient, limiting stress on downstream components |
| PPPM | 400 W (10/1000 μs waveform) - peak surge energy absorption capability without failure |
| TJ max. | +185 °C - enables operation in under-hood automotive and industrial power electronics |
| Polarity | Unidirectional - protects against positive transients only; cathode band denotes terminal orientation |
| Package | SMA (DO-214AC) - industry-standard surface-mount outline with 0.208" x 0.157" footprint and matte tin-plated leads |
Pinout & Package
SMA (DO-214AC) package with axial lead configuration: two terminals - cathode (marked by color band) and anode - mounted on PCB with minimum 5.0 mm × 5.0 mm copper pads per terminal per Vishay recommended layout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink | Connected to protected line; conducts avalanche current to ground during overvoltage events |
| Anode | Reference return path | Typically tied to system ground or low-impedance return plane to complete clamping loop |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation optimized design | Enables stable VBR performance and low leakage (<1.0 μA) across full temperature range |
| TJ = 185 °C capability | Supports placement near heat-generating components in engine control units and DC-DC converters |
| 400 W peak pulse power (10/1000 μs) | Withstands ISO 7637-2 Pulse 1/2a/5a transients in 12 V automotive systems |
| AEC-Q101 qualified (HE3 suffix) | Validated for automotive use including engine management, body control modules, and ADAS power supplies |
| MSL Level 1, 260 °C peak reflow | Compatible with standard lead-free SMT assembly without moisture sensitivity concerns |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Suppressing load dump and alternator ripple transients on 12 V battery-fed ECUs in passenger vehicles. IC Role / Device Role / Timing Role: Parallel-connected clamping TVS protecting LDO regulators and microcontroller power inputs. Use Value: Limits voltage excursion to ≤18.9 V during 400 W surges, preventing latch-up or permanent damage to 16 V-rated silicon. | Use Scenario: Shielding analog front-end circuits of pressure/temperature sensors in factory automation PLCs. IC Role / Device Role / Timing Role: Fast-response overvoltage guard on signal lines exposed to relay coil switching noise. Use Value: Sub-1 ns response time clamps induced spikes before they propagate into precision ADC input stages. |
| Consumer Device USB Port Protection | Telecom Power Supply Input Protection |
Use Scenario: Safeguarding USB-C power delivery circuits in portable monitors against ESD and hot-plug transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between VBUS and GND to absorb ±15 kV contact ESD per IEC 61000-4-2. Use Value: 12.8 V VWM allows normal 5–20 V PD operation while clamping ESD to <19 V, preserving USB PD controller integrity. | Use Scenario: Protecting primary-side rectifiers and controllers in AC/DC adapters used in VoIP gateways and base stations. IC Role / Device Role / Timing Role: Front-end transient suppressor on bulk capacitor input stage facing lightning-induced surges. Use Value: 400 W rating handles 10/1000 μs telecom surge standards (GR-1089-CORE), reducing need for upstream MOVs. |
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 (15.0 V), but SMB (DO-214AA) package - 20 % larger footprint, 600 W PPPM | Higher surge margin suits telecom infrastructure; less space-constrained than automotive PCBs | Select when higher pulse power headroom is required and board area permits larger SMB outline |
| TPSMA15AHM3_B/I | Identical electrical specs and SMA package; HM3 suffix adds halogen-free construction (vs. HE3's RoHS-only) | Required for strict environmental compliance in EU medical or aerospace programs | Choose HM3 if halogen-free material declaration is mandatory per customer sustainability requirements |
Compared with SMBJ15AHE3_A/H and TPSMA15AHM3_B/I, the TPSMA15AHE3_B/I delivers optimal balance of AEC-Q101 qualification, compact SMA footprint, and 400 W surge capability - making it the preferred choice for space-limited automotive modules where halogen content is not restricted.
Availability
TPSMA15AHE3_B/I is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor interfaces, consumer USB power delivery systems, and telecom AC/DC input stages requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for TPSMA15AHE3_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 devices, and optoelectronics with emphasis on reliability, thermal performance, and automotive qualification.
The TPSMA series belongs to Vishay's PAR® (Protected Avalanche Rectifier) transient voltage suppressor product line, engineered specifically for high-temperature, high-reliability overvoltage protection in automotive and industrial power systems.
FAQ
What is the breakdown voltage tolerance for TPSMA15AHE3_B/I?
The TPSMA15AHE3_B/I has a specified breakdown voltage range of 14.3 V (minimum) to 15.8 V (maximum) at 1.0 mA test current, with 15.0 V as the nominal value. This ±5 % tolerance ensures consistent clamping behavior across production lots and supports reliable design margining in automotive and industrial applications where precise overvoltage thresholds are critical.
Is TPSMA15AHE3_B/I qualified for automotive use?
Yes, the TPSMA15AHE3_B/I carries the HE3 suffix, which explicitly denotes RoHS compliance and AEC-Q101 qualification per Vishay's ordering nomenclature. It is tested and certified for automotive-grade reliability, including high-temperature operation up to +185 °C junction temperature and robustness against mechanical shock, vibration, and humidity cycling required for engine control, body electronics, and ADAS subsystems.
What is the maximum clamping voltage of TPSMA15AHE3_B/I under surge conditions?
The TPSMA15AHE3_B/I exhibits a maximum clamping voltage (VC) of 18.9 V when subjected to its rated 5.0 A peak pulse current (IPPM) under the standard 10/1000 μs waveform. This value is measured per ANSI/IEEE C62.35 and guarantees that protected downstream components experience no more than 18.9 V during transient events, enabling safe operation of 16 V-rated ICs and MOSFETs.
Does TPSMA15AHE3_B/I support lead-free reflow soldering?
Yes, the TPSMA15AHE3_B/I is rated for MSL Level 1 per J-STD-020 and supports lead-free reflow with a maximum peak temperature of 260 °C. Its matte tin-plated leads comply with J-STD-002 and JESD 22-B102, and the device passes JESD 201 Class 2 whisker testing - ensuring reliable solder joint formation and long-term interconnect integrity in automated SMT assembly lines.
How does the thermal coefficient of VBR affect TPSMA15AHE3_B/I performance?
The TPSMA15AHE3_B/I has a typical VBR temperature coefficient (αT) of 0.076 %/°C, meaning its breakdown voltage increases linearly with junction temperature. At +150 °C, VBR rises ~9.5 % above its 25 °C value - to approximately 16.4 V - preserving clamping margin while avoiding premature conduction during sustained high-temperature operation in under-hood environments.
TPSMA15AHE3_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):
- 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_B/I FAQ
1.How can I place an order for TPSMA15AHE3_B/I through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMA15AHE3_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 TPSMA15AHE3_B/I reliable?
The price and inventory of TPSMA15AHE3_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 TPSMA15AHE3_B/I is usually 5 days.
3.What payment methods are accepted for TPSMA15AHE3_B/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMA15AHE3_B/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMA15AHE3_B/I?
TPSMA15AHE3_B/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMA15AHE3_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 TPSMA15AHE3_B/I?
For technical support, including TPSMA15AHE3_B/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMA15AHE3_B/I requirements.
6.How does Aetrix verify that TPSMA15AHE3_B/I is sourced from the original manufacturer or authorized distributors?
All TPSMA15AHE3_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 TPSMA15AHE3_B/I meets industry standards.
7.What is the process for return or replacement of TPSMA15AHE3_B/I?
All TPSMA15AHE3_B/I units undergo pre-shipment inspection (PSI). If there is an issue with TPSMA15AHE3_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 TPSMA15AHE3_B/I part is unused and in its original packaging.
Return procedure for TPSMA15AHE3_B/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPSMA15AHE3_B/I Tags
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