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Vishay General Semiconductor - Diodes Division TPSMA15HE3_A/H
- Part No.:
- TPSMA15HE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
TPSMA15HE3_A/H.pdf
- Description:
- TVS DIODE 12.1VWM 22VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:2,039
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Product details
Overview
TPSMA15HE3_A/H from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor (TVS) 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), 21.2 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 - enabling robust protection in automotive and industrial power rails.
For engineers reviewing the TPSMA15HE3_A/H datasheet, TPSMA15HE3_A/H pinout, TPSMA15HE3_A/H application, or TPSMA15HE3_A/H equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification status, TJ = 185 °C capability, low clamping ratio (VC/VBR ≈ 1.41), and compatibility with high-reliability PCB layouts using 5.0 mm × 5.0 mm copper pads.
Technical Context
This TVS diode employs passivated anisotropic rectifier technology to deliver stable clamping performance under repetitive surge conditions. Its 10/1000 µs waveform rating of 400 W and 5.0 A IPPM at VC = 21.2 V reflect optimized surge handling for inductive load switching and lightning-induced transients.
The device operates across -65 °C to +185 °C junction temperature range and meets MSL Level 1 per J-STD-020 with 260 °C reflow peak. The HE3 suffix confirms RoHS compliance and AEC-Q101 qualification - critical for automotive ECUs and industrial controllers requiring long-term reliability under thermal stress.
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 1.0 mA test current |
| VWM | 12.8 V - maximum continuous reverse operating voltage before leakage exceeds 1.0 µA, sets safe DC bias limit |
| VC @ IPPM | 21.2 V at 5.0 A - clamped voltage during 10/1000 µs surge, determines protected circuit's worst-case overvoltage exposure |
| PPPM | 400 W - peak pulse power handling capacity, defines transient energy absorption capability without failure |
| TJ max. | +185 °C - enables operation in under-hood automotive environments and high-power industrial enclosures |
| Polarity | Unidirectional - protects against positive-going transients only; requires correct cathode orientation toward protected line |
| Package | SMA (DO-214AC) - surface-mount outline with 5.28 mm length, 4.50 mm width, and 2.29 mm height for automated assembly |
Pinout & Package
SMA (DO-214AC) package with molded epoxy body, matte tin-plated leads, and cathode band marking. Mounting requires 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal per Vishay recommended layout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Anode of internal avalanche diode structure | Connected to protected line (e.g., 12 V rail); conducts when transient exceeds VBR, shunting current to ground |
| Anode | Cathode of internal avalanche diode structure | Connected to system ground; completes clamping path during overvoltage events; must maintain low-impedance return path |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive electronics per stress test requirements including HTGB, HTRB, and temperature cycling |
| Junction passivation | Reduces surface leakage and improves long-term stability under humidity and thermal cycling |
| MSL Level 1 | Zero floor life limitation; supports standard SMT reflow up to 260 °C peak without baking |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients (e.g., ISO 7637-2 Pulse 1/2a), improving clamping fidelity |
| 185 °C TJ rating | Enables placement near heat sources (e.g., power MOSFETs, DC/DC converters) without derating |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs from load dump and alternator ripple transients per ISO 7637-2. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between power input and ground to limit voltage excursions below IC absolute maximum ratings. Use Value: With VC = 21.2 V at 5.0 A and 400 W pulse rating, TPSMA15HE3_A/H prevents latch-up or damage to downstream regulators and microcontrollers. |
Use Scenario: Safeguarding analog sensor outputs (e.g., pressure, temperature) in factory automation systems exposed to relay coil flyback. IC Role / Device Role / Timing Role: Fast-response transient suppressor on differential or single-ended signal traces, positioned adjacent to connector entry points. Use Value: Sub-1 ns response time and 21.2 V clamping ensure signal integrity remains intact during 1 kV/µs EFT bursts without distorting low-level mV-range signals. |
| Consumer Power Adapter Input Stage | Telecom DC Power Interface |
Use Scenario: Secondary-side overvoltage suppression in USB-C PD adapters subject to capacitor discharge transients. IC Role / Device Role / Timing Role: Standoff-rated TVS on 5–20 V output rails to absorb energy from hot-plug events and output short-circuit recovery spikes. Use Value: 12.8 V VWM allows reliable operation across full PD profile range while 21.2 V VC stays below typical 24 V system overvoltage thresholds. |
Use Scenario: Primary protection for -48 V telecom power feeds against lightning-induced surges entering via outdoor cabling. IC Role / Device Role / Timing Role: First-stage unidirectional suppressor on DC input before DC/DC conversion and monitoring circuitry. Use Value: 400 W peak power and 185 °C TJ rating support sustained operation in sealed outdoor cabinets where ambient temperatures exceed 85 °C. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ15AHE3_A/H | Same VBR (15.0 V) and VC (24.4 V), but SMB package (DO-214AA) - larger footprint (4.57 mm × 3.94 mm vs. 5.28 mm × 4.50 mm) and 600 W PPPM | Higher pulse power margin suits higher-energy transients; less space-constrained designs | Select when board layout allows larger package and >400 W surge headroom is required |
| TPSMA15AHM3_A/H | Identical electrical specs and SMA package; HM3 suffix adds halogen-free construction (vs. HE3's RoHS-only) | Required for strict environmental compliance in EU medical or aerospace supply chains | Choose HM3 version if halogen-free material declaration is mandatory per customer BOM policy |
Compared with SMBJ15AHE3_A/H and TPSMA15AHM3_A/H, the TPSMA15HE3_A/H offers optimal balance of AEC-Q101 qualification, compact SMA footprint, and verified 185 °C operation - making it preferred for space-limited automotive modules and industrial edge nodes where thermal resilience and qualification traceability are non-negotiable.
Availability
TPSMA15HE3_A/H is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor interfaces, and telecom DC power systems requiring stable component supply with full AEC-Q101 documentation and traceable lot history.
Supply support for TPSMA15HE3_A/H 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 automotive-grade qualification.
The TPSMA series belongs to Vishay's PAR® transient voltage suppressor product line, engineered specifically for high-temperature, high-reliability protection in automotive power distribution and industrial control systems.
FAQ
What is the exact breakdown voltage tolerance for TPSMA15HE3_A/H?
The TPSMA15HE3_A/H has a guaranteed breakdown voltage range of 14.3 V (minimum) to 15.8 V (maximum) at 1.0 mA test current, with 15.0 V nominal value. This ±5% tolerance ensures predictable clamping onset across production lots and temperature extremes up to 185 °C junction temperature.
Is TPSMA15HE3_A/H suitable for bidirectional transient protection?
No, TPSMA15HE3_A/H is unidirectional only, as confirmed by Vishay's datasheet and ordering code designation "A" (unidirectional) versus "CA" (bidirectional). It protects against positive transients only; use TPSMA15CAHE3_A/H for symmetrical surge suppression on AC or differential lines.
Does TPSMA15HE3_A/H require derating above 25 °C ambient?
Yes, TPSMA15HE3_A/H must be derated per Figure 2 in Vishay document 88405: peak pulse power decreases linearly above 25 °C ambient, reaching ~50% of 400 W at 125 °C case temperature. Designers must apply thermal modeling or use Vishay's derating curves to ensure safe operation in enclosed environments.
What is the maximum reverse leakage current for TPSMA15HE3_A/H at 125 °C?
At 125 °C junction temperature and rated VWM = 12.8 V, the maximum reverse leakage current for TPSMA15HE3_A/H is 1000 µA, per the "MAXIMUM REVERSE LEAKAGE AT VWM ID (μA)" column in the Electrical Characteristics table - significantly higher than the 1.0 µA limit at 25 °C.
How does the HE3 suffix affect the qualification status of TPSMA15HE3_A/H?
The HE3 suffix on TPSMA15HE3_A/H indicates RoHS-compliant construction and full AEC-Q101 qualification, including HTGB, HTRB, and temperature cycling tests. This distinguishes it from non-suffixed variants and confirms suitability for automotive production without additional qualification effort.
TPSMA15HE3_A/H 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/H FAQ
1.How can I place an order for TPSMA15HE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMA15HE3_A/H 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/H reliable?
The price and inventory of TPSMA15HE3_A/H 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/H is usually 5 days.
3.What payment methods are accepted for TPSMA15HE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMA15HE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMA15HE3_A/H?
TPSMA15HE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMA15HE3_A/H 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/H?
For technical support, including TPSMA15HE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMA15HE3_A/H requirements.
6.How does Aetrix verify that TPSMA15HE3_A/H is sourced from the original manufacturer or authorized distributors?
All TPSMA15HE3_A/H 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/H meets industry standards.
7.What is the process for return or replacement of TPSMA15HE3_A/H?
All TPSMA15HE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with TPSMA15HE3_A/H, 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/H part is unused and in its original packaging.
Return procedure for TPSMA15HE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPSMA15HE3_A/H Tags
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