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Vishay General Semiconductor - Diodes Division TPSMA15AHE3/61T
- Part No.:
- TPSMA15AHE3/61T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
TPSMA15AHE3/61T.pdf
- Description:
- TVS DIODE 12.8VWM 21.2VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:7,143
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Product details
Overview
TPSMA15AHE3/61T 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), 21.2 V clamping voltage (VC) at 5.0 A peak pulse current, and 400 W peak pulse power (10/1000 µs). It operates up to +185 °C junction temperature and is AEC-Q101 qualified for automotive-grade reliability.
For engineers reviewing the TPSMA15AHE3/61T datasheet, TPSMA15AHE3/61T pinout, TPSMA15AHE3/61T application, or TPSMA15AHE3/61T equivalent, key selection criteria include unidirectional polarity, 12.8 V working voltage compatibility with 12 V rail systems, low 1.0 µA reverse leakage at VWM, fast response time for ESD/lightning surge suppression, and MSL Level 1 reflow capability.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology to deliver stable clamping performance under repetitive transients. Its 185 °C maximum junction temperature enables operation in high-temperature automotive engine compartments and industrial motor drives without derating.
The device responds to 10/1000 µs waveform surges with 21.2 V clamping at 5.0 A, achieving low incremental surge resistance for effective overvoltage protection of downstream ICs and MOSFETs. It meets JESD201 Class 2 whisker resistance and UL 94 V-0 flammability requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 14.3 V / 15.0 V / 15.8 V - ensures reliable conduction onset above 12 V system rails while avoiding false triggering |
| VWM | 12.8 V - maximum continuous reverse voltage before leakage exceeds 1.0 µA, compatible with 12 V nominal supply systems |
| VC @ IPPM | 21.2 V at 5.0 A - limits transient voltage seen by protected circuitry to safe levels during 400 W surge events |
| PPPM | 400 W (10/1000 µs) - handles high-energy inductive switching spikes and lightning-induced surges in automotive and industrial environments |
| TJ max. | +185 °C - supports under-hood automotive applications and high-ambient industrial control systems without thermal derating |
| Polarity | Unidirectional - protects against positive-going transients only; requires correct cathode orientation toward protected line |
| MSL Level | Level 1 (260 °C peak) - allows standard lead-free 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 JEDEC DO-214AC outline and IPC-7351B footprint recommendations.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during forward conduction; connected to ground or low-side reference | Provides return path for surge current; must be routed to low-impedance ground plane for effective clamping |
| Cathode | Current exit point during reverse-biased clamping; connected to protected line | Connected directly to signal/power line requiring protection; color band identifies this terminal |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive electronics per stress test requirements, enabling use in engine control units and ADAS sensors |
| 185 °C junction rating | Eliminates need for thermal derating in high-ambient environments such as powertrain modules and industrial inverters |
| 400 W peak pulse power | Withstands repeated 10/1000 µs surges common in relay coil switching and CAN bus transients |
| Low 1.0 µA leakage at VWM | Minimizes standby power loss in battery-powered automotive subsystems and IoT sensor nodes |
| MSL Level 1 reflow compatibility | Supports single-pass lead-free assembly without baking, reducing manufacturing cost and cycle time |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: Protecting 12 V power distribution networks in engine control modules from load dump and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS clamps positive transients on main power input to prevent damage to microcontrollers and power management ICs. Use Value: Withstands 400 W surges and operates reliably at 185 °C, meeting ISO 7637-2 Pulse 5a requirements without external heatsinking. | Use Scenario: Shielding analog output lines of pressure and temperature sensors in factory automation PLC I/O modules. IC Role / Device Role / Timing Role: Fast-response TVS absorbs ESD and inductive kickback from nearby solenoid actuation. Use Value: 21.2 V clamping voltage ensures protected op-amp inputs remain below absolute maximum ratings during 8 kV contact ESD events. |
| Telecom DC Power Input Protection | Consumer USB-C Port Surge Suppression |
Use Scenario: Safeguarding primary DC input of PoE-powered network switches against lightning-induced surges on outdoor cabling. IC Role / Device Role / Timing Role: Standoff-rated TVS shunts high-voltage transients before they reach DC-DC converters and Ethernet PHYs. Use Value: 12.8 V VWM aligns with 12 V PoE auxiliary supplies; 400 W rating covers IEC 61000-4-5 Level 4 surge immunity. | Use Scenario: Adding secondary-level surge protection on VBUS lines of USB-C receptacles in portable docking stations. IC Role / Device Role / Timing Role: Low-leakage TVS provides fail-safe clamping without affecting USB 3.2 signal integrity or power delivery negotiation. Use Value: 1.0 µA reverse leakage at 12.8 V prevents battery drain in always-on mobile accessories; SMA package fits tight board space. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ15A | Same VBR (14.3–15.8 V), but SMB package (DO-214AA); 600 W PPPM; higher 24.4 V VC at 6.7 A | Larger footprint; better suited for higher-energy surges where board space permits | Select when higher pulse power margin is required and PCB layout accommodates SMB size |
| 1.5SMC15A | Same VBR | TO-277 (SOD-123FL) package; lower 1.0 W PD; not AEC-Q101 qualified | Lower-cost alternative for non-automotive consumer applications with less stringent reliability requirements |
Compared with SMBJ15A and 1.5SMC15A, the TPSMA15AHE3/61T offers optimal balance of AEC-Q101 qualification, compact SMA footprint, and precise 21.2 V clamping-making it preferred for space-constrained automotive and industrial designs requiring certified reliability.
Availability
TPSMA15AHE3/61T is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface hardening, and telecom DC input surge suppression requiring stable component supply across production lifecycles.
Supply support for TPSMA15AHE3/61T 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 TPSMA15AHE3/61T belongs to Vishay's PAR® family of surface-mount transient voltage suppressors, engineered specifically for robust overvoltage protection in harsh-temperature automotive and industrial environments.
FAQ
What is the clamping voltage of the TPSMA15AHE3/61T and how is it measured?
The TPSMA15AHE3/61T has a maximum clamping voltage (VC) of 21.2 V at 5.0 A peak pulse current using a 10/1000 µs waveform. This value is measured per IEC 61000-4-5 and ANSI/IEEE C62.35 standards, with the device mounted on a PCB using 0.2" × 0.2" copper pads per terminal. The clamping voltage defines the upper limit of transient voltage imposed on protected circuitry during surge events, ensuring downstream ICs remain within safe operating limits. TPSMA15AHE3/61T achieves this with low incremental surge resistance inherent to its passivated anisotropic rectifier structure.
Is the TPSMA15AHE3/61T suitable for automotive applications?
Yes, the TPSMA15AHE3/61T is AEC-Q101 qualified and rated for operation up to +185 °C junction temperature, making it suitable for under-hood and powertrain applications including engine control units, body control modules, and ADAS sensor interfaces. Its HE3 suffix confirms RoHS compliance and automotive qualification per the Vishay ordering nomenclature. TPSMA15AHE3/61T also meets JESD201 Class 2 whisker resistance and MSL Level 1 reflow requirements-key criteria for automotive manufacturing. These attributes are verified in the official Vishay document 88405.
What does the "HE3/61T" suffix indicate in TPSMA15AHE3/61T?
The "HE3" suffix denotes RoHS-compliant, AEC-Q101 qualified construction with matte tin-plated leads and JESD201 Class 2 whisker resistance. The "61T" refers to the tape-and-reel packaging configuration: 7-inch diameter reel, 1800 units per reel, using plastic carrier tape per EIA-481 standard. This packaging format ensures compatibility with automated SMT placement equipment and supports high-volume production. TPSMA15AHE3/61T is therefore optimized for both automotive reliability and scalable manufacturing deployment.
How does the TPSMA15AHE3/61T compare to bidirectional TVS diodes?
The TPSMA15AHE3/61T is unidirectional and protects only against positive-going transients relative to ground, requiring correct cathode-to-line orientation. Bidirectional TVS diodes (e.g., TPSMA15CA) protect against both polarities but exhibit higher capacitance and slightly reduced clamping efficiency. TPSMA15AHE3/61T's unidirectional design yields lower leakage (1.0 µA at VWM) and tighter clamping (21.2 V), making it preferable for DC power rails and single-polarity signal lines. Its application scope is defined by polarity-aware placement-not functional equivalence to bidirectional variants.
What is the thermal derating behavior of the TPSMA15AHE3/61T above 25 °C ambient?
The TPSMA15AHE3/61T follows standard derating curves per Figure 2 in Vishay document 88405: peak pulse power decreases linearly from 400 W at 25 °C to approximately 200 W at 125 °C ambient, with full derating to zero at 185 °C junction temperature. Derating is based on initial junction temperature, not ambient alone, and assumes proper PCB copper pad thermal mass (0.2" × 0.2" per terminal). TPSMA15AHE3/61T maintains specified VBR stability across this range via its 0.076 %/°C temperature coefficient, ensuring consistent protection threshold in high-temp environments.
TPSMA15AHE3/61T 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)
TPSMA15AHE3/61T FAQ
1.How can I place an order for TPSMA15AHE3/61T through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMA15AHE3/61T 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 TPSMA15AHE3/61T reliable?
The price and inventory of TPSMA15AHE3/61T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPSMA15AHE3/61T is usually 5 days.
3.What payment methods are accepted for TPSMA15AHE3/61T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMA15AHE3/61T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMA15AHE3/61T?
TPSMA15AHE3/61T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMA15AHE3/61T 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 TPSMA15AHE3/61T?
For technical support, including TPSMA15AHE3/61T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMA15AHE3/61T requirements.
6.How does Aetrix verify that TPSMA15AHE3/61T is sourced from the original manufacturer or authorized distributors?
All TPSMA15AHE3/61T 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 TPSMA15AHE3/61T meets industry standards.
7.What is the process for return or replacement of TPSMA15AHE3/61T?
All TPSMA15AHE3/61T units undergo pre-shipment inspection (PSI). If there is an issue with TPSMA15AHE3/61T, 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 TPSMA15AHE3/61T part is unused and in its original packaging.
Return procedure for TPSMA15AHE3/61T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPSMA15AHE3/61T Tags
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