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Vishay General Semiconductor - Diodes Division TPSMA15HE3_A/I
- Part No.:
- TPSMA15HE3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
TPSMA15HE3_A/I.pdf
- Description:
- TVS DIODE 12.1VWM 22VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:4,842
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Product details
Overview
TPSMA15HE3_A/I from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMA (DO-214AC) package, designed for clamping voltage transients on power and signal lines. It features a 15.0 V nominal breakdown voltage (VBR), 12.8 V stand-off voltage (VWM), 400 W peak pulse power (10/1000 μs), 18.9 V maximum clamping voltage at 5.0 A IPPM, and operates up to +185 °C junction temperature - ideal for automotive power rail protection.
For engineers reviewing the TPSMA15HE3_A/I datasheet, TPSMA15HE3_A/I pinout, TPSMA15HE3_A/I application, or TPSMA15HE3_A/I equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification status, TJ = 185 °C capability, low clamping voltage under surge, and RoHS-compliant matte tin plating per J-STD-002.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology optimized for high-temperature stability and fast response to ESD and lightning-induced transients. Its unidirectional architecture provides robust forward conduction during overvoltage events while maintaining low leakage (<1.0 μA at VWM) at 25 °C and <5.0 μA at 150 °C.
The device is rated for 40 A non-repetitive peak forward surge current (8.3 ms half-sine), exhibits 3.5 V max forward voltage at 25 A, and meets MSL Level 1 per J-STD-020 with 260 °C reflow peak - confirming suitability for automated SMT assembly in automotive and industrial environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 14.3 / 15.0 / 15.8 V - ensures reliable triggering above normal operating voltage without false clamping |
| VWM | 12.8 V - maximum continuous reverse voltage before significant leakage begins |
| VC @ IPPM | 18.9 V at 5.0 A - limits downstream IC voltage stress during 10/1000 μs surge |
| PPPM | 400 W - handles high-energy transients common in automotive load-dump and inductive switching |
| TJ max. | +185 °C - supports operation in under-hood and industrial high-temp environments |
| Polarity | Unidirectional - protects against positive-going transients only; requires correct orientation in circuit |
| Package | SMA (DO-214AC) - industry-standard SMD footprint with cathode band marking |
Pinout & Package
SMA (DO-214AC) package with axial lead configuration: molded plastic body, matte tin-plated terminals solderable per J-STD-002, cathode indicated by color band. Mounting requires 5.0 mm × 5.0 mm copper pads per terminal for full 400 W rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during forward conduction | Connected to protected line's lower-potential side (e.g., ground or return path) |
| Cathode | Current exit point during clamping | Connected to protected line's higher-potential side (e.g., VCC, signal line); marked by band |
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 humidity and bias stress |
| MSL Level 1 | Enables standard reflow without baking; peak 260 °C compatible with Pb-free processes |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (e.g., ESD >15 kV contact) |
| 185 °C TJ capability | Extends usable lifetime in high-ambient applications such as engine control units and motor drives |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Clamping |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs from ISO 7637-2 pulse 1 (inductive switch-off) and pulse 5a (load dump). IC Role / Device Role: Unidirectional TVS placed between VBAT and GND to clamp transients before they reach LDOs and microcontrollers. Use Value: Limits voltage to ≤18.9 V during 400 W surges, preventing latch-up or gate oxide damage in downstream silicon. | Use Scenario: Shielding analog sensor outputs (e.g., pressure, temperature) in factory automation PLC modules from cable-coupled noise. IC Role / Device Role: TVS connected across differential pair or single-ended signal-to-ground to absorb EFT bursts and lightning-induced spikes. Use Value: Sub-20 V clamping preserves ADC input integrity and avoids saturation or front-end amplifier damage. |
| Consumer Device USB Port Surge Suppression | Telecom DC Power Input Protection |
Use Scenario: Safeguarding USB 2.0 data lines and VBUS in portable docking stations exposed to human-body ESD. IC Role / Device Role: Discrete unidirectional TVS on VBUS line, oriented to clamp positive surges only. Use Value: 12.8 V VWM allows clean 5 V operation; 18.9 V VC prevents USB PHY damage during ±15 kV contact discharge. | Use Scenario: Protecting -48 V telecom power inputs from induced surges on long outdoor feeder lines. IC Role / Device Role: TVS installed between -48 V rail and chassis ground to shunt lightning energy. Use Value: 400 W rating handles multi-kA surge currents; 185 °C rating ensures reliability in sealed, heat-trapped enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ15A | Same VBR (14.3–15.8 V), same SMA package, but rated for 400 W at 1 mA test current (vs. 1.0 mA for TPSMA15HE3_A/I); no AEC-Q101 qualification | Not automotive-qualified; suitable for commercial/industrial use only | Select when AEC-Q101 is not required and cost sensitivity outweighs automotive validation needs |
| SMCJ15A | Higher 1500 W PPPM, larger SMC (DO-214AB) package, same VBR range, AEC-Q101 available in HE3 variant | Requires PCB area increase (~2× footprint); used where higher surge margin is critical | Select when system-level surge testing exceeds 400 W requirements or when legacy SMC layout exists |
Compared with SMAJ15A and SMCJ15A, TPSMA15HE3_A/I delivers automotive-grade reliability in the smallest standardized TVS footprint, balancing surge robustness, thermal endurance, and manufacturability - making it optimal for space-constrained, high-temperature automotive modules where AEC-Q101 compliance is mandatory.
Availability
TPSMA15HE3_A/I is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor interfaces, and telecom power supply designs requiring stable component supply, AEC-Q101 validation, and high-temperature operational assurance.
Supply support for TPSMA15HE3_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, MOSFETs, and protection devices with emphasis on reliability, thermal performance, and automotive qualification.
The TPSMA series belongs to Vishay's PAR® (Protection and Regulation) transient voltage suppressor family, engineered specifically for high-energy clamping in harsh-environment applications including automotive power systems and industrial control cabinets.
FAQ
What is the AEC-Q101 qualification status of TPSMA15HE3_A/I?
TPSMA15HE3_A/I is AEC-Q101 qualified, as confirmed by Vishay's ordering code suffix "HE3", which denotes RoHS-compliant and AEC-Q101-validated versions. This qualification covers stress tests including temperature cycling, high-temperature reverse bias, and ESD, ensuring suitability for automotive under-hood and chassis applications. The TPSMA15HE3_A/I datasheet explicitly lists AEC-Q101 in its FEATURES section and ordering information table.
Does TPSMA15HE3_A/I support bidirectional transient suppression?
No, TPSMA15HE3_A/I is unidirectional only, as stated in the Vishay datasheet under FEATURES. It clamps positive transients relative to its cathode and conducts forward current in one direction only. For bidirectional protection, a separate device such as TPSMA15CA or dual-diode configurations must be used. The TPSMA15HE3_A/I polarity is marked by a cathode band and must be oriented correctly in-circuit.
What is the maximum clamping voltage of TPSMA15HE3_A/I at rated surge current?
The maximum clamping voltage (VC) of TPSMA15HE3_A/I is 18.9 V at 5.0 A peak pulse current (IPPM) using a 10/1000 μs waveform. This value is specified in the ELECTRICAL CHARACTERISTICS table for device TPSMA15A and applies directly to TPSMA15HE3_A/I, which shares identical electrical parameters. It defines the upper voltage limit imposed on protected circuits during surge events.
Is TPSMA15HE3_A/I compatible with lead-free reflow soldering processes?
Yes, TPSMA15HE3_A/I meets MSL Level 1 per J-STD-020 and supports peak reflow temperatures up to 260 °C, fully compatible with standard Pb-free soldering profiles. Its matte tin-plated leads comply with J-STD-002 and JESD 22-B102, and the device passes whisker testing per JESD 201 Class 2 - confirming robust intermetallic formation and solder joint integrity in high-volume SMT assembly.
What is the thermal derating behavior of TPSMA15HE3_A/I above 25 °C ambient?
TPSMA15HE3_A/I follows linear derating of peak pulse power above 25 °C ambient, as shown in Figure 2 of the Vishay datasheet (Document Number 88405). At 100 °C ambient, its 400 W rating drops to approximately 220 W; at 150 °C, it falls to ~120 W. Derating is based on junction temperature limits (TJ ≤ 185 °C) and assumes recommended 5.0 mm × 5.0 mm copper pad layout per terminal.
TPSMA15HE3_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):
- 12.1V
- 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_A/I FAQ
1.How can I place an order for TPSMA15HE3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMA15HE3_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 TPSMA15HE3_A/I reliable?
The price and inventory of TPSMA15HE3_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 TPSMA15HE3_A/I is usually 5 days.
3.What payment methods are accepted for TPSMA15HE3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMA15HE3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMA15HE3_A/I?
TPSMA15HE3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMA15HE3_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 TPSMA15HE3_A/I?
For technical support, including TPSMA15HE3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMA15HE3_A/I requirements.
6.How does Aetrix verify that TPSMA15HE3_A/I is sourced from the original manufacturer or authorized distributors?
All TPSMA15HE3_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 TPSMA15HE3_A/I meets industry standards.
7.What is the process for return or replacement of TPSMA15HE3_A/I?
All TPSMA15HE3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with TPSMA15HE3_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 TPSMA15HE3_A/I part is unused and in its original packaging.
Return procedure for TPSMA15HE3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPSMA15HE3_A/I Tags
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