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Vishay General Semiconductor - Diodes Division TPSMA16HE3/5AT
- Part No.:
- TPSMA16HE3/5AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
TPSMA16HE3/5AT.pdf
- Description:
- TVS DIODE 12.9VWM 23.5VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:7,774
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Product details
Overview
TPSMA16HE3/5AT from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor (TVS) in SMA (DO-214AC) package, designed to protect sensitive electronics against voltage transients induced by inductive load switching and lightning. 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.
For engineers reviewing the TPSMA16HE3/5AT datasheet, TPSMA16HE3/5AT pinout, TPSMA16HE3/5AT application, or TPSMA16HE3/5AT equivalent, this device is selected for high-reliability automotive and industrial surge protection where TJ = 185 °C operation, AEC-Q101 qualification, and low incremental surge resistance are critical design requirements.
Technical Context
The TPSMA16HE3/5AT operates as a unidirectional avalanche diode with passivated anisotropic rectifier technology, enabling stable clamping under repetitive 10/1000 μs transients at 0.01 % duty cycle. Its junction temperature range spans −65 °C to +185 °C, supporting operation in under-hood automotive environments and high-temperature industrial control systems.
It delivers 22.0 V clamping at 17.8 A (10/1000 μs), with 1.0 W steady-state power dissipation and 40 A non-repetitive forward surge capability (8.3 ms half-sine). The device meets MSL Level 1 per J-STD-020 and is RoHS-compliant with matte tin-plated leads solderable per J-STD-002.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (Nominal) | 16.0 V - precise avalanche breakdown threshold for reliable transient detection and clamping |
| 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 10/1000 μs surge, defining protected circuit stress level |
| PPPM | 400 W - peak transient energy absorption capacity under standardized waveform |
| TJ max. | +185 °C - enables use in high-temperature automotive ECUs without derating penalties |
| Polarity | Unidirectional - protects against positive transients only; cathode marked with band |
| AEC-Q101 | Qualified - validated for automotive reliability including temperature cycling, HTRB, and ESD |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, molded case meeting UL 94 V-0; cathode indicated by color band; terminals are matte tin-plated, solderable per J-STD-002.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during forward conduction or transient clamp | Connected to protected line (e.g., signal or power rail) requiring clamping to ground |
| Cathode | Current exit point during clamping; referenced to system ground | Must be tied to low-impedance ground plane to ensure effective voltage suppression |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation optimized design | Enables stable VBR and low leakage (<1 μA at VWM) over lifetime and temperature |
| 400 W peak pulse power (10/1000 μs) | Supports IEC 61000-4-5 Level 3 (1 kV/2 Ω) surge immunity without external series impedance |
| TJ = 185 °C capability | Eliminates thermal derating in engine control modules and powertrain electronics |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients (e.g., ISO 7637-2 Pulse 1/2a) |
| MSL Level 1, 260 °C reflow compatible | Allows single-pass lead-free reflow assembly without moisture sensitivity concerns |
Applications
| Automotive Power Line Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed microcontroller inputs and CAN transceivers from load dump and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and chassis ground to clamp transients above 13.6 V. Use Value: Withstands 40 A IFSM and clamps to 22.0 V at 17.8 A, preventing damage to downstream AEC-Q100 ICs. | Use Scenario: Shielding analog sensor outputs (e.g., pressure, temperature) from ESD and switching noise in PLC I/O modules. IC Role / Device Role / Timing Role: TVS connected across differential signal pair or single-ended output to ground. Use Value: 1.0 μA max IR at VWM ensures minimal signal loading; fast response preserves signal integrity. |
| Consumer Power Adapter Input Protection | Telecom DC Power Feed Protection |
Use Scenario: Safeguarding AC-DC adapter primary-side controllers from surges on mains input lines. IC Role / Device Role / Timing Role: Unidirectional TVS mounted across bridge rectifier output to absorb line-to-line transients. Use Value: 400 W PPPM rating handles repeated 10/1000 μs surges common in residential grid environments. | Use Scenario: Protecting PoE-powered equipment front-end from induced surges on 48 V DC feed lines. IC Role / Device Role / Timing Role: TVS placed between DC+ and ground to clamp overvoltage events from cable coupling. Use Value: AEC-Q101 qualification and 185 °C TJ rating ensure long-term reliability in sealed telecom enclosures. |
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), but SMB package (DO-214AA); 600 W PPPM; higher IPPM (32.4 A) | Larger footprint; better suited for higher-energy surges where board space permits | Select when higher surge margin is required and PCB layout allows larger package |
| 1.5SMC16A | Same VBR, SMC (DO-214AB) package; 1500 W PPPM; 113 A IPPM | Substantially higher power handling; requires larger pad layout and thermal relief | Choose for mission-critical industrial systems needing >1 kW surge immunity |
Compared with SMBJ16A and 1.5SMC16A, the TPSMA16HE3/5AT offers optimal balance of compact SMA footprint, AEC-Q101 qualification, and 400 W surge capability-ideal for space-constrained automotive and portable industrial designs where thermal and mechanical reliability are prioritized over raw power rating.
Availability
TPSMA16HE3/5AT is available at Aetrix Electronics and suitable for automotive power line protection, industrial sensor interface protection, and telecom DC feed protection requiring stable component supply, AEC-Q101 compliance, and high-temperature operational assurance.
Supply support for TPSMA16HE3/5AT 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, precision, and high-temperature performance.
The TPSMA16HE3/5AT belongs to Vishay's PAR® family of surface-mount TVS diodes, engineered specifically for robust transient suppression in automotive, industrial, and computing applications where AEC-Q101 qualification and 185 °C junction operation are mandatory.
FAQ
What is the clamping voltage of the TPSMA16HE3/5AT at its rated peak pulse current?
The TPSMA16HE3/5AT has a maximum clamping voltage (VC) of 22.0 V at its rated peak pulse current (IPPM) of 17.8 A under the standard 10/1000 μs waveform. This value defines the upper voltage limit imposed on protected circuits during surge events and is measured with the device mounted on 0.2" × 0.2" copper pads per the datasheet test condition. The TPSMA16HE3/5AT maintains this clamping performance across its full operating temperature range.
Is the TPSMA16HE3/5AT qualified for automotive applications?
Yes, the TPSMA16HE3/5AT is AEC-Q101 qualified, as confirmed by Vishay's ordering code suffix "HE3", which denotes RoHS-compliant and AEC-Q101 qualified construction. It undergoes rigorous stress testing-including temperature cycling, high-temperature reverse bias (HTRB), and ESD-to meet automotive reliability standards. The TPSMA16HE3/5AT is explicitly recommended for under-hood and powertrain applications due to its 185 °C maximum junction temperature rating.
What does the "HE3" suffix mean in TPSMA16HE3/5AT?
The "HE3" suffix in TPSMA16HE3/5AT indicates that the device is RoHS-compliant and AEC-Q101 qualified, with matte tin-plated leads passing JESD 201 Class 2 whisker testing. The "5AT" denotes tape-and-reel packaging in 7-inch reels with 1800 units per reel. This suffix distinguishes it from HM3 variants (halogen-free) and non-qualified base part numbers, ensuring traceability to automotive-grade manufacturing and testing protocols for the TPSMA16HE3/5AT.
How does the TPSMA16HE3/5AT compare to bidirectional TVS diodes in surge protection?
The TPSMA16HE3/5AT is unidirectional and therefore optimized for DC or single-polarity line protection-such as 12 V automotive power rails-where only positive transients require suppression. Unlike bidirectional TVS diodes, it provides lower leakage (<1 μA at VWM) and tighter VBR tolerance, improving efficiency in always-on systems. For AC or differential signal lines, a bidirectional device would be required; the TPSMA16HE3/5AT is not suitable for those use cases.
What is the maximum steady-state power dissipation of the TPSMA16HE3/5AT?
The TPSMA16HE3/5AT has a maximum steady-state power dissipation (PD) of 1.0 W at ambient temperature (TA) = 25 °C, derated linearly above that temperature per the datasheet's thermal curve. This rating applies to continuous reverse-biased operation-not transient conditions-and reflects the device's ability to dissipate heat under normal operating voltage (≤13.6 V). Exceeding this limit risks thermal runaway; the TPSMA16HE3/5AT relies on transient-only energy absorption for surge events.
TPSMA16HE3/5AT 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)
TPSMA16HE3/5AT FAQ
1.How can I place an order for TPSMA16HE3/5AT through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMA16HE3/5AT 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 TPSMA16HE3/5AT reliable?
The price and inventory of TPSMA16HE3/5AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPSMA16HE3/5AT is usually 5 days.
3.What payment methods are accepted for TPSMA16HE3/5AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMA16HE3/5AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMA16HE3/5AT?
TPSMA16HE3/5AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMA16HE3/5AT 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 TPSMA16HE3/5AT?
For technical support, including TPSMA16HE3/5AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMA16HE3/5AT requirements.
6.How does Aetrix verify that TPSMA16HE3/5AT is sourced from the original manufacturer or authorized distributors?
All TPSMA16HE3/5AT 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 TPSMA16HE3/5AT meets industry standards.
7.What is the process for return or replacement of TPSMA16HE3/5AT?
All TPSMA16HE3/5AT units undergo pre-shipment inspection (PSI). If there is an issue with TPSMA16HE3/5AT, 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 TPSMA16HE3/5AT part is unused and in its original packaging.
Return procedure for TPSMA16HE3/5AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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