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Vishay General Semiconductor - Diodes Division TPSMA16HE3_A/I
- Part No.:
- TPSMA16HE3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
TPSMA16HE3_A/I.pdf
- Description:
- TVS DIODE 12.9VWM 23.5VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:3,468
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Product details
Overview
TPSMA16HE3_A/I from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor (TVS) diode in SMA (DO-214AC) package, designed for clamping voltage transients on power and signal lines. It features a 16.0 V nominal breakdown voltage (VBR), 13.6 V stand-off voltage (VWM), 400 W peak pulse power (10/1000 μs), 17.8 V maximum clamping voltage at 5.0 A IPPM, and 185 °C maximum junction temperature - enabling robust protection in automotive engine control units and industrial sensor interfaces.
For engineers reviewing the TPSMA16HE3_A/I datasheet, TPSMA16HE3_A/I pinout, TPSMA16HE3_A/I application, or TPSMA16HE3_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
The TPSMA16HE3_A/I operates as a unidirectional avalanche diode, leveraging passivated anisotropic rectifier technology to achieve stable reverse-biased clamping without forward conduction during normal operation. Its 16.0 V nominal breakdown voltage is specified at 1.0 mA test current, with ±5% tolerance (15.2–16.8 V), and exhibits a positive temperature coefficient of 0.078 %/°C for VBR.
It delivers 400 W peak pulse power per 10/1000 μs waveform under derated conditions, supports 40 A non-repetitive forward surge current (8.3 ms half-sine), and maintains <1.0 μA reverse leakage at VWM = 13.6 V and TJ = 150 °C - confirming suitability for high-reliability automotive and industrial environments where thermal stability and low leakage are critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 15.2 V / 16.0 V / 16.8 V at 1.0 mA - defines precise clamping onset threshold for overvoltage events |
| VWM | 13.6 V - maximum continuous reverse voltage before significant leakage begins |
| VC @ IPPM | 17.8 V at 5.0 A - peak clamped voltage seen by protected circuit during 400 W transient |
| PPPM | 400 W (10/1000 μs) - energy-handling capacity for lightning and inductive-switching surges |
| TJ max. | 185 °C - enables operation in under-hood automotive locations and high-ambient industrial enclosures |
| Polarity | Unidirectional - protects against positive transients only; requires correct cathode orientation |
| Package | SMA (DO-214AC) - industry-standard SMD outline with 0.208" x 0.157" footprint and MSL Level 1 rating |
Pinout & Package
SMA (DO-214AC) package: surface-mount, two-terminal, molded epoxy case with cathode band marking; terminals are matte tin-plated, solderable per J-STD-002 and JESD 22-B102; meets UL 94 V-0 flammability rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink | Connected to protected line; conducts surge current to ground when VLINE exceeds VBR |
| Anode | Reference node | Typically tied to system ground or low-impedance return path; completes clamping loop |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing |
| Junction passivation | Reduces surface leakage and improves long-term stability under high humidity and bias stress |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (e.g., ISO 7637-2 Pulse 1/2a) |
| MSL Level 1 (260 °C peak) | Enables standard reflow assembly without moisture sensitivity concerns or baking requirements |
| 185 °C TJ capability | Supports placement near heat sources (e.g., power MOSFETs, DC-DC converters) without derating |
Applications
| Automotive Engine Control Unit (ECU) | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Protects microcontroller I/O and CAN transceiver pins from load-dump and alternator ripple transients in 12 V vehicle systems. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed between signal line and chassis ground to clamp positive spikes above 13.6 V. Use Value: Limits voltage seen by downstream ICs to ≤17.8 V during 400 W surges, preventing latch-up or gate oxide damage in AEC-Q100-compliant components. |
Use Scenario: Shields analog front-end inputs of pressure/temperature sensors in factory automation PLC modules from ESD and relay-coil flyback. IC Role / Device Role / Timing Role: Standoff-clamping device on 0–5 V or 4–20 mA signal paths, operating below VWM during normal function. Use Value: Maintains <1.0 μA leakage at 13.6 V and 150 °C, preserving signal integrity and ADC accuracy in high-temperature enclosures. |
| Telecom Power Supply Input | Consumer Appliance Motor Drive Board |
Use Scenario: Guards primary-side DC bus (e.g., after bridge rectifier) against lightning-induced surges per IEC 61000-4-5 Level 3. IC Role / Device Role / Timing Role: Fast-response clamping element across bulk capacitor input, triggered within nanoseconds of overvoltage event. Use Value: Achieves 17.8 V clamping at 5.0 A with <1 ns response time, limiting stress on 25 V-rated electrolytic capacitors and MOSFETs. |
Use Scenario: Suppresses inductive kickback from brushed DC motor commutation in smart home appliances (e.g., vacuum cleaners, washing machines). IC Role / Device Role / Timing Role: Unidirectional TVS mounted across motor terminals or H-bridge outputs to absorb stored inductive energy. Use Value: Withstands 40 A single-pulse surge (8.3 ms) and 185 °C junction temperature, ensuring survival in thermally constrained PCB layouts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ16A (Bourns) | Same VBR range (15.2–16.8 V), but SMB package (DO-214AA); 600 W PPPM; higher clamping voltage (21.2 V @ 5.0 A) | Higher power rating suits larger energy transients; larger footprint may limit layout flexibility in space-constrained designs | Select SMBJ16A only if board area allows DO-214AA and clamping voltage margin permits 21.2 V |
| 1.5SMC16A (ON Semiconductor) | Same VBR and PPPM, but SMC (DO-214AB) package; 1.5 kW peak power rating; 20.8 V clamping @ 5.0 A; RoHS-compliant but not AEC-Q101 qualified | Lacks automotive qualification; suitable for industrial/commercial use where AEC-Q101 is not mandated | Choose 1.5SMC16A for cost-sensitive non-automotive applications requiring identical electrical specs but no automotive validation |
Compared with TPSMA16HE3_A/I, SMBJ16A offers higher surge power but less compact packaging and looser clamping, while 1.5SMC16A matches key ratings but omits AEC-Q101 qualification - making TPSMA16HE3_A/I the preferred choice where automotive compliance and SMA footprint are mandatory.
Availability
TPSMA16HE3_A/I is available at Aetrix Electronics and suitable for automotive ECUs, industrial sensor interfaces, telecom power inputs, and consumer appliance motor drives requiring stable component supply, AEC-Q101 validation, and consistent 16 V clamping performance.
Supply support for TPSMA16HE3_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, thermal performance, and automotive qualification.
The TPSMA series belongs to Vishay's PAR® family of high-temperature-stable TVS diodes, engineered specifically for harsh-environment transient suppression in automotive, industrial, and telecom infrastructure applications.
FAQ
What is the exact breakdown voltage tolerance for TPSMA16HE3_A/I?
The TPSMA16HE3_A/I has a nominal breakdown voltage of 16.0 V at 1.0 mA test current, with a guaranteed minimum of 15.2 V and maximum of 16.8 V - representing ±5% tolerance. This tight specification ensures predictable clamping onset across production lots and temperature ranges up to 150 °C, as confirmed in the Vishay Document Number 88405, Table on page 2.
Is TPSMA16HE3_A/I AEC-Q101 qualified, and what does that cover?
Yes, TPSMA16HE3_A/I is AEC-Q101 qualified, as explicitly stated in the Vishay datasheet (Document Number 88405, page 1, Features section). This qualification covers stress tests including high-temperature reverse bias (HTRB), temperature cycling, mechanical shock, and ESD (HBM ≥ 8 kV), validating its suitability for automotive electronic systems per industry reliability standards.
What is the maximum clamping voltage of TPSMA16HE3_A/I under surge conditions?
The TPSMA16HE3_A/I exhibits a maximum clamping voltage (VC) of 17.8 V at 5.0 A peak pulse current (IPPM) using the 10/1000 μs waveform. This value is measured per standard test conditions and represents the highest voltage imposed on the protected circuit during a 400 W transient, directly supporting design margin calculations for downstream 20 V-rated components.
Can TPSMA16HE3_A/I be used in bidirectional protection circuits?
No, TPSMA16HE3_A/I is unidirectional only, as clearly specified in the Features section of the Vishay datasheet. It clamps positive transients relative to ground and blocks reverse current - it cannot suppress negative-going surges. For bidirectional protection, a separate device such as TPSMA16CA or a dual-diode configuration is required.
What is the thermal derating behavior of TPSMA16HE3_A/I above 25 °C ambient?
The TPSMA16HE3_A/I follows linear thermal derating per Figure 2 in the Vishay datasheet: peak pulse power decreases from 400 W at 25 °C to approximately 200 W at 125 °C ambient, with full derating to zero at 185 °C junction temperature. This curve enables accurate surge survivability modeling in high-temperature PCB environments like engine compartments or enclosed industrial drives.
TPSMA16HE3_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):
- 12.9V
- Voltage - Breakdown (Min):
- 14.4V
- Voltage - Clamping (Max) @ Ipp:
- 23.5V
- Current - Peak Pulse (10/1000µs):
- 17A
- 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)
TPSMA16HE3_A/I FAQ
1.How can I place an order for TPSMA16HE3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMA16HE3_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 TPSMA16HE3_A/I reliable?
The price and inventory of TPSMA16HE3_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 TPSMA16HE3_A/I is usually 5 days.
3.What payment methods are accepted for TPSMA16HE3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMA16HE3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMA16HE3_A/I?
TPSMA16HE3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMA16HE3_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 TPSMA16HE3_A/I?
For technical support, including TPSMA16HE3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMA16HE3_A/I requirements.
6.How does Aetrix verify that TPSMA16HE3_A/I is sourced from the original manufacturer or authorized distributors?
All TPSMA16HE3_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 TPSMA16HE3_A/I meets industry standards.
7.What is the process for return or replacement of TPSMA16HE3_A/I?
All TPSMA16HE3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with TPSMA16HE3_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 TPSMA16HE3_A/I part is unused and in its original packaging.
Return procedure for TPSMA16HE3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPSMA16HE3_A/I Tags
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