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Vishay General Semiconductor - Diodes Division TPSMA15HE3/5AT
- Part No.:
- TPSMA15HE3/5AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
TPSMA15HE3/5AT.pdf
- Description:
- TVS DIODE 12.1VWM 22VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:2,443
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Product details
Overview
TPSMA15HE3/5AT from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMA (DO-214AC) package, designed for clamping inductive switching surges and lightning-induced transients. It features a 15.0 V nominal breakdown voltage (VBR), 12.8 V stand-off voltage (VWM), 18.9 V maximum clamping voltage (VC) at 5.0 A peak pulse current, 400 W peak pulse power (10/1000 µs), and 185 °C maximum junction temperature - deployed in automotive sensor signal lines and industrial I/O protection.
For engineers reviewing the TPSMA15HE3/5AT datasheet, TPSMA15HE3/5AT pinout, TPSMA15HE3/5AT application, or TPSMA15HE3/5AT equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, thermal derating behavior, clamping performance under surge conditions, and RoHS-compliant packaging details specific to the HE3 suffix variant.
Technical Context
This TVS diode operates as a unidirectional clamping device with an anisotropic rectifier structure optimized for high-temperature stability. Its 185 °C junction rating enables operation in under-hood automotive environments, and its low incremental surge resistance ensures minimal voltage overshoot during fast transients.
The device meets MSL Level 1 per J-STD-020 (peak reflow 260 °C), uses matte tin-plated leads compliant with J-STD-002 and JESD 22-B102, and is qualified to AEC-Q101 - confirmed by the HE3 suffix denoting RoHS-compliant and AEC-Q101-qualified construction.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 14.3 V / 15.0 V / 15.8 V - defines precise voltage threshold at which avalanche conduction begins under 1 mA test current |
| VWM | 12.8 V - maximum continuous reverse working voltage before leakage exceeds 1 μA at 25 °C |
| VC @ IPPM = 5.0 A | 18.9 V - clamped voltage seen by protected circuit during 10/1000 µs surge, limiting downstream stress |
| PPPM | 400 W - peak pulse power handling capability under standardized 10/1000 µs waveform, critical for surge immunity |
| TJmax | 185 °C - enables reliable operation in high-ambient automotive and industrial control environments |
| Polarity | Unidirectional - protects against positive-going transients only; cathode marked by band on SMA body |
| Package | SMA (DO-214AC) - industry-standard surface-mount outline with 0.208" x 0.157" footprint and 0.078" lead spacing |
Pinout & Package
SMA (DO-214AC) package: molded epoxy case with matte tin-plated leads; cathode identified by color band; terminals designed for soldering per J-STD-002; meets UL 94 V-0 flammability rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Anode of internal avalanche junction | Connected to protected line; conducts when transient exceeds VBR, shunting current to ground |
| Anode | Cathode of internal avalanche junction | Typically tied to system ground; completes clamping path during overvoltage events |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation optimized design | Reduces surface leakage and improves long-term reliability under high-humidity and high-temperature bias conditions |
| AEC-Q101 qualification (HE3 suffix) | Validated for automotive-grade deployment including engine control units, body electronics, and ADAS sensor interfaces |
| 400 W peak pulse power (10/1000 µs) | Withstands repetitive ESD and load-dump surges without degradation when mounted on 5 mm × 5 mm copper pads |
| MSL Level 1 (260 °C peak reflow) | Enables single-pass lead-free reflow assembly without moisture-related popcorn failure risk |
| Low incremental surge resistance | Minimizes VC – VBR differential, reducing voltage overshoot during fast-rising transients (e.g., ISO 7637-2 Pulse 1/2a) |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load-dump and inductive kickback in vehicle ECUs. IC Role / Device Role / Timing Role: Unidirectional clamping TVS placed between signal line and chassis ground, responding within <1 ns to limit transient voltage to safe levels. Use Value: Prevents damage to 12 V-rated transceivers by clamping to ≤18.9 V at 5 A, maintaining signal integrity during ISO 16750-2 load-dump events. |
Use Scenario: Safeguarding digital input modules in programmable logic controllers exposed to relay coil flyback and motor drive noise. IC Role / Device Role / Timing Role: Standoff protection element on 24 V DC input channels, absorbing repetitive 400 W surges without parameter shift. Use Value: Enables >100,000 surge cycles at rated power due to stable TJ = 185 °C operation and low thermal resistance package. |
| Consumer Power Adapter EMI Filtering | Telecom Line Interface Protection |
Use Scenario: Secondary-side transient suppression in AC/DC adapters for USB-C PD and fast-charging applications. IC Role / Device Role / Timing Role: Clamping diode across output rails to absorb switching noise and external surge coupling via shared ground paths. Use Value: Maintains compliance with IEC 61000-4-5 Level 3 (2 kV) while supporting compact board layout due to SMA footprint. |
Use Scenario: Overvoltage protection on Ethernet PHY interface lines and RS-485 data buses in base station equipment. IC Role / Device Role / Timing Role: Front-end TVS on differential pairs, operating in unidirectional mode to preserve common-mode rejection during fast transients. Use Value: Delivers 18.9 V clamping at 5 A with <10 pF junction capacitance (at VR = 0 V), minimizing signal distortion on 100 Mbps links. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional TVS diode 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 thermal mass but larger footprint | Preferred where higher surge margin is required and PCB space allows 2.54 mm lead pitch | Select SMBJ15A if system-level testing requires ≥600 W surge rating and layout accommodates larger package |
| 1.5SMC15A | Same VBR range, SMC (DO-214AB) package; 1500 W PPPM; higher IFSM (100 A vs. 40 A) | Suitable for primary-side AC-line protection or high-energy industrial surge events | Choose 1.5SMC15A only when protecting against higher-energy threats (e.g., IEC 61000-4-5 Level 4) and thermal management supports larger case |
Compared with SMBJ15A and 1.5SMC15A, the TPSMA15HE3/5AT offers optimal balance of AEC-Q101 qualification, compact SMA footprint, and 400 W surge capability - making it ideal for space-constrained automotive and industrial signal-line protection where MSL-1 reflow and 185 °C operation are mandatory.
Availability
TPSMA15HE3/5AT is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, and telecom line protection requiring stable component supply, AEC-Q101 compliance, and high-temperature reliability.
Supply support for TPSMA15HE3/5AT 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 and high-temperature performance.
The TPSMA15HE3/5AT belongs to Vishay's PAR® (Protected Avalanche Rectifier) TVS family, engineered specifically for robust transient suppression in harsh-environment applications including automotive, industrial control, and telecommunications infrastructure.
FAQ
What is the exact breakdown voltage tolerance for TPSMA15HE3/5AT?
The TPSMA15HE3/5AT has a guaranteed breakdown voltage range of 14.3 V to 15.8 V at 1 mA test current (IT), with 15.0 V as the nominal value. This ±5% tolerance is measured per ANSI/IEEE C62.35 standards and applies at TA = 25 °C. The device's temperature coefficient of VBR is +0.076 %/°C, enabling accurate derating up to 185 °C junction temperature.
Is TPSMA15HE3/5AT qualified to AEC-Q101, and what does the HE3 suffix indicate?
Yes, TPSMA15HE3/5AT is AEC-Q101 qualified - confirmed by the HE3 suffix, which denotes RoHS-compliant construction and full AEC-Q101 stress testing including HTGB, HTRB, and temperature cycling. The HE3 variant also passes JESD 201 Class 2 whisker testing and meets MSL Level 1 reflow requirements (260 °C peak).
What is the maximum clamping voltage of TPSMA15HE3/5AT under surge conditions?
The TPSMA15HE3/5AT exhibits a maximum clamping voltage (VC) of 18.9 V when subjected to a 10/1000 µs surge waveform at 5.0 A peak pulse current (IPPM). This value is measured per Fig. 1 and Fig. 3 of Vishay document 88405 and represents the upper bound of voltage seen by protected circuitry during standardized transient events.
Can TPSMA15HE3/5AT be used in bidirectional protection circuits?
No, TPSMA15HE3/5AT is strictly unidirectional and must not be used for bidirectional protection. Its internal structure supports conduction only from cathode to anode during overvoltage events. For bidirectional applications, a dedicated bidirectional TVS such as SMAJ15CA or an anti-parallel pair would be required - neither of which is functionally equivalent to the TPSMA15HE3/5AT.
What PCB pad layout is recommended for optimal thermal and surge performance of TPSMA15HE3/5AT?
Vishay specifies a minimum 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pad area attached to each terminal for rated 400 W pulse power handling. The SMA (DO-214AC) outline drawing in document 88405 provides exact pad dimensions: 0.074" max width, 0.208" max length, with 0.066" min center-to-center lead spacing. Thermal vias under pads are recommended for sustained power dissipation.
TPSMA15HE3/5AT 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):
- 12.1V
- Voltage - Breakdown (Min):
- 13.5V
- Voltage - Clamping (Max) @ Ipp:
- 22V
- Current - Peak Pulse (10/1000µs):
- 18.2A
- 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)
TPSMA15HE3/5AT FAQ
1.How can I place an order for TPSMA15HE3/5AT through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMA15HE3/5AT 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 TPSMA15HE3/5AT reliable?
The price and inventory of TPSMA15HE3/5AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPSMA15HE3/5AT is usually 5 days.
3.What payment methods are accepted for TPSMA15HE3/5AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMA15HE3/5AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMA15HE3/5AT?
TPSMA15HE3/5AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMA15HE3/5AT 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 TPSMA15HE3/5AT?
For technical support, including TPSMA15HE3/5AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMA15HE3/5AT requirements.
6.How does Aetrix verify that TPSMA15HE3/5AT is sourced from the original manufacturer or authorized distributors?
All TPSMA15HE3/5AT 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 TPSMA15HE3/5AT meets industry standards.
7.What is the process for return or replacement of TPSMA15HE3/5AT?
All TPSMA15HE3/5AT units undergo pre-shipment inspection (PSI). If there is an issue with TPSMA15HE3/5AT, 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 TPSMA15HE3/5AT part is unused and in its original packaging.
Return procedure for TPSMA15HE3/5AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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