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Vishay General Semiconductor - Diodes Division TPSMA16A/1
- Part No.:
- TPSMA16A/1
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
TPSMA16A/1.pdf
- Description:
- TVS DIODE 13.6VWM 22VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:9,728
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Product details
Overview
TPSMA16A/1 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 A peak pulse current (IPPM), and 22.0 V maximum clamping voltage (VC) at IPPM, enabling robust protection of MOSFETs and ICs in automotive power supply rails.
For engineers reviewing the TPSMA16A/1 datasheet, TPSMA16A/1 pinout, TPSMA16A/1 application, or TPSMA16A/1 equivalent, key selection criteria include unidirectional polarity, 185 °C junction temperature rating, AEC-Q101 qualification eligibility (via HE3/HM3 suffixes), low 0.078 %/°C VBR temperature coefficient, and compatibility with automated SMT assembly per J-STD-002.
Technical Context
This TVS diode operates as a voltage-clamping protection device triggered by reverse-biased avalanche breakdown. Its junction passivated anisotropic rectifier technology ensures stable leakage behavior up to 150 °C and enables reliable operation under repetitive surge conditions with 0.01 % duty cycle.
The device delivers 400 W peak pulse power handling with a 10/1000 μs waveform while maintaining low incremental surge resistance and fast response time-critical for suppressing lightning-induced surges and inductive switching transients on 12 V automotive systems and industrial sensor interfaces.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (Nominal) | 16.0 V - precise avalanche breakdown threshold ensuring predictable clamping onset |
| VWM | 13.6 V - maximum continuous reverse operating voltage before leakage exceeds 1 μA |
| VC @ IPPM | 22.0 V - clamped voltage during 17.8 A transient, limiting downstream stress to safe levels |
| PPPM | 400 W - surge energy absorption capability compliant with IEC 61000-4-5 Level 4 |
| TJ max. | +185 °C - extended thermal range supporting under-hood automotive placement |
| Polarity | Unidirectional - protects against positive transients only; requires correct cathode orientation |
| Package | SMA (DO-214AC) - industry-standard SMT footprint compatible with IPC-7351B land patterns |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, molded plastic case with matte tin-plated leads, UL 94 V-0 rated, MSL Level 1 (260 °C reflow peak).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Reverse-biased avalanche terminal | Connected to protected line; conducts during overvoltage to shunt current to ground |
| Anode | Reference/return terminal | Typically tied to system ground or lower-potential rail; completes clamping path |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivated anisotropic rectifier technology | Enables stable leakage performance up to 150 °C and repeatable breakdown characteristics across temperature |
| 400 W peak pulse power (10/1000 μs) | Meets IEC 61000-4-5 surge immunity requirements for industrial and automotive applications |
| AEC-Q101 qualification path (HE3/HM3 suffixes) | Supports automotive-grade sourcing with validated reliability under temperature cycling, HTRB, and ESD stress |
| Low 0.078 %/°C VBR temperature coefficient | Minimizes drift in clamping threshold across -65 °C to +185 °C operating range |
| MSL Level 1, 260 °C peak reflow | Enables single-pass lead-free reflow without moisture sensitivity concerns |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs from load dump and alternator ripple transients. IC Role / Device Role / Timing Role: Unidirectional TVS clamping element placed between power input and ground. Use Value: Limits transient voltage to ≤22.0 V during 17.8 A surges, preventing damage to downstream DC-DC converters and microcontrollers. | Use Scenario: Shielding analog sensor outputs (e.g., pressure, temperature) from ESD and cable discharge events. IC Role / Device Role / Timing Role: Signal-line TVS connected between sensor output and ground, with minimal capacitance impact. Use Value: Clamps 8 kV contact ESD pulses within nanoseconds while adding <1 pF junction capacitance at zero bias. |
| Consumer Power Adapter Input Protection | Telecom Line Card Surge Suppression |
Use Scenario: Safeguarding AC/DC adapter primary-side rectifiers and controllers against mains-borne surges. IC Role / Device Role / Timing Role: Primary-side unidirectional TVS across bulk capacitor input terminals. Use Value: Absorbs 400 W surges without degradation, maintaining 13.6 V stand-off to avoid false triggering during normal 12–15 V operation. | Use Scenario: Front-end protection of Ethernet PHYs and DSL line drivers exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Series-connected TVS on differential pairs, referenced to chassis ground. Use Value: Provides 22.0 V clamping at 17.8 A with low dynamic impedance, preserving signal integrity on 100 Ω differential lines. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ16A | Same VBR (16.0 V), higher PPPM = 600 W, larger SMB (DO-214AA) package | Higher surge margin but requires larger PCB area; not drop-in compatible due to different pad layout | Select when 600 W surge rating is required and board space permits SMB footprint |
| 1.5SMC16A | Same VBR (16.0 V), PPPM = 1500 W, much larger SMC (DO-214AB) package, higher VC = 26.0 V | Higher energy handling but slower response and greater clamping voltage; suited for primary-side AC input | Choose for high-energy AC mains protection where 22.0 V clamping is less critical than energy absorption |
Compared with SMBJ16A and 1.5SMC16A, the TPSMA16A/1 offers optimal balance of compact SMA footprint, precise 22.0 V clamping, and AEC-Q101 readiness-making it preferred for space-constrained automotive and industrial PCBs requiring consistent low-VC performance.
Availability
TPSMA16A/1 is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface hardening, and consumer power adapter input surge suppression requiring stable component supply and long-term lifecycle support.
Supply support for TPSMA16A/1 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 performance.
The TPSMA16A/1 belongs to Vishay's PAR® family of surface-mount TVS diodes, engineered specifically for high-temperature stability and repeatable surge clamping in harsh environments such as engine control units and factory automation systems.
FAQ
What is the maximum clamping voltage of the TPSMA16A/1 at its rated peak pulse current?
The TPSMA16A/1 has a maximum clamping voltage (VC) of 22.0 V at its rated peak pulse current (IPPM) of 17.8 A under a 10/1000 μs waveform. This value is measured per IEC 61000-4-5 test conditions and defines the upper voltage limit imposed on protected circuitry during surge events. The TPSMA16A/1 maintains this clamping performance across its full operating temperature range.
Is the TPSMA16A/1 qualified to AEC-Q101 for automotive use?
The base TPSMA16A/1 is not AEC-Q101 qualified; however, Vishay offers AEC-Q101-qualified versions under ordering codes TPSMA16AHE3 and TPSMA16AHM3. These variants include enhanced process controls, extended reliability testing, and traceable lot documentation. The TPSMA16A/1 itself shares identical electrical and thermal specifications but lacks formal automotive qualification unless ordered with HE3 or HM3 suffixes.
What is the stand-off voltage (VWM) of the TPSMA16A/1, and why does it matter?
The TPSMA16A/1 has a stand-off voltage (VWM) of 13.6 V, meaning it remains non-conductive with leakage <1 μA up to this reverse voltage. This parameter ensures no interference with normal 12 V automotive or industrial system operation while providing sufficient margin below the 16.0 V breakdown threshold. Selecting a VWM correctly prevents false triggering and unnecessary power loss in the TPSMA16A/1.
Can the TPSMA16A/1 be used in bidirectional protection circuits?
No-the TPSMA16A/1 is unidirectional only, as confirmed in the Vishay datasheet. It conducts only during reverse-biased overvoltage events and cannot suppress negative transients on the anode side. For bidirectional protection, a dedicated bidirectional TVS (e.g., TPSMA16CA) or back-to-back unidirectional configuration is required. Using the TPSMA16A/1 in bidirectional roles risks failure during negative excursions.
What is the junction temperature rating of the TPSMA16A/1, and how does it affect PCB layout?
The TPSMA16A/1 supports a maximum junction temperature (TJ) of +185 °C, enabling operation in high-ambient environments like engine compartments. To achieve this rating, the datasheet specifies mounting on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. Deviating from this pad size reduces thermal dissipation and may cause premature thermal runaway during repeated surges. The TPSMA16A/1 must be placed with adequate copper area to sustain its rated 185 °C TJ.
TPSMA16A/1 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):
- 13.6V
- Voltage - Breakdown (Min):
- 15.2V
- Voltage - Clamping (Max) @ Ipp:
- 22V
- Current - Peak Pulse (10/1000µs):
- 17.8A
- Power - Peak Pulse:
- 400W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 185°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
TPSMA16A/1 FAQ
1.How can I place an order for TPSMA16A/1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMA16A/1 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 TPSMA16A/1 reliable?
The price and inventory of TPSMA16A/1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPSMA16A/1 is usually 5 days.
3.What payment methods are accepted for TPSMA16A/1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMA16A/1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMA16A/1?
TPSMA16A/1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMA16A/1 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 TPSMA16A/1?
For technical support, including TPSMA16A/1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMA16A/1 requirements.
6.How does Aetrix verify that TPSMA16A/1 is sourced from the original manufacturer or authorized distributors?
All TPSMA16A/1 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 TPSMA16A/1 meets industry standards.
7.What is the process for return or replacement of TPSMA16A/1?
All TPSMA16A/1 units undergo pre-shipment inspection (PSI). If there is an issue with TPSMA16A/1, 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 TPSMA16A/1 part is unused and in its original packaging.
Return procedure for TPSMA16A/1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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