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Vishay General Semiconductor - Diodes Division TPSMA7.5AHE3/5AT
- Part No.:
- TPSMA7.5AHE3/5AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
TPSMA7.5AHE3/5AT.pdf
- Description:
- TVS DIODE 6.4VWM 11.3VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:3,461
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Product details
Overview
TPSMA7.5AHE3/5AT from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor (TVS) diode designed for clamping inductive switching surges and lightning-induced transients. It features a 7.5 V nominal breakdown voltage (VBR), 400 W peak pulse power (10/1000 µs), 11.3 V maximum clamping voltage at 35.4 A peak pulse current, and operates up to +185 °C junction temperature-ideal for automotive power rail protection.
For engineers reviewing the TPSMA7.5AHE3/5AT datasheet, TPSMA7.5AHE3/5AT pinout, TPSMA7.5AHE3/5AT application, or TPSMA7.5AHE3/5AT equivalent, key selection criteria include unidirectional polarity, SMA (DO-214AC) package compatibility, AEC-Q101 qualification status, TJ = 185 °C rating, and clamping performance under 10/1000 µs surge conditions.
Technical Context
This TVS diode employs passivated anisotropic rectifier technology optimized for high-temperature stability and low incremental surge resistance. Its junction passivation enables reliable operation at TJ = 185 °C and meets MSL Level 1 per J-STD-020 with 260 °C lead-free reflow tolerance.
The device delivers excellent clamping capability with 11.3 V VC at IPPM = 35.4 A (10/1000 µs), fast response time (<1 ns), and low leakage (<150 µA at VWM = 6.4 V, TA = 25 °C). It is RoHS-compliant, halogen-free optional (HM3 suffix), and qualified to AEC-Q101 for automotive use.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 7.13 / 7.50 / 7.88 V - ensures precise turn-on threshold for overvoltage protection at rated test current of 10 mA |
| VWM | 6.40 V - maximum continuous reverse working voltage before leakage exceeds 150 µA |
| VC @ IPPM | 11.3 V at 35.4 A - clamping voltage during 400 W 10/1000 µs surge, limiting downstream stress |
| PPPM | 400 W - peak pulse power handling capability under standard transient waveform |
| TJ max. | +185 °C - enables use in under-hood automotive environments without derating |
| Polarity | Unidirectional - protects against positive-going transients only; cathode band denotes polarity |
| Package | SMA (DO-214AC) - industry-standard surface-mount outline with 0.208" x 0.157" footprint and matte tin-plated leads |
Pinout & Package
TPSMA7.5AHE3/5AT uses the SMA (DO-214AC) package: a two-terminal surface-mount case with cathode indicated by a color band. Terminals are matte tin-plated and solderable per J-STD-002 and JESD 22-B102. Mounting requires 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal per JEDEC standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Anode of internal PN junction | Connected to protected line; absorbs positive transients when referenced to ground |
| Anode | Cathode of internal PN junction | Typically tied to system ground or low-impedance return path for clamping action |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation | Enables stable 185 °C operation and long-term reliability under thermal cycling and humidity |
| AEC-Q101 qualification | Validates robustness for automotive power electronics including engine control units and body modules |
| 400 W peak pulse power (10/1000 µs) | Withstands repetitive ESD and load-dump transients without degradation in industrial and automotive systems |
| MSL Level 1 rating | Supports lead-free reflow up to 260 °C without popcorn effect or delamination |
| Low clamping ratio (VC/VBR ≈ 1.5) | Minimizes overvoltage exposure to downstream ICs and MOSFETs during surge events |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs from ISO 7637-2 load dump and inductive switching spikes. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed between power rail and chassis ground to clamp transients above 11.3 V. Use Value: Prevents latch-up or permanent damage to microcontrollers and CAN transceivers during cold-crank or alternator regulation faults. | Use Scenario: Safeguarding analog sensor outputs (e.g., pressure, temperature) in factory automation PLC I/O modules. IC Role / Device Role / Timing Role: Transient suppression on signal lines exposed to relay coil back-EMF and motor drive noise. Use Value: Maintains signal integrity and prevents false triggering in 4–20 mA or 0–10 V sensor loops operating in electrically noisy environments. |
| Telecom Line Card Surge Protection | Consumer Power Adapter Input Stage |
Use Scenario: Secondary-side DC bus protection in telecom base station power supplies subjected to lightning-induced surges. IC Role / Device Role / Timing Role: Fast-clamping TVS on +48 V distribution rails upstream of DC/DC converters. Use Value: Limits voltage overshoot to <12 V during 10/1000 µs transients, preserving converter FET gate oxide integrity. | Use Scenario: Input-stage transient suppression in USB-C PD adapters and wall chargers exposed to AC line surges. IC Role / Device Role / Timing Role: Unidirectional clamping device across primary-side bulk capacitor terminals. Use Value: Absorbs 400 W surges without failure, meeting IEC 61000-4-5 Level 3 requirements while maintaining compact SMA footprint. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ7.5A | Same SMA package, 7.5 V VBR, but lower PPPM = 400 W (same rating), higher VC = 12.0 V at 33.3 A | Marginally higher clamping voltage reduces protection margin for sensitive 5 V logic interfaces | Acceptable where clamping headroom >12 V is acceptable and AEC-Q101 is not required |
| 1.5SMC7.5A | Larger SMC (DO-214AB) package, same VBR, PPPM = 1500 W, VC = 12.9 V at 116.3 A | Higher surge capacity suits heavy-duty industrial equipment but requires larger PCB area | Preferred for high-energy transients where board space allows and 1500 W rating is needed |
Compared with SMAJ7.5A and 1.5SMC7.5A, the TPSMA7.5AHE3/5AT offers tighter clamping (11.3 V), AEC-Q101 qualification, and optimized thermal performance at 185 °C-making it the preferred choice for space-constrained, high-reliability automotive and industrial designs requiring validated automotive-grade robustness.
Availability
TPSMA7.5AHE3/5AT is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface protection, and telecom line card surge protection requiring stable component supply, full traceability, and lifecycle continuity.
Supply support for TPSMA7.5AHE3/5AT 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 high-reliability and automotive-grade solutions.
The TPSMA7.5AHE3/5AT belongs to Vishay's PAR® family of surface-mount TVS diodes, engineered specifically for high-temperature, high-surge environments in automotive, industrial, and telecom infrastructure applications.
FAQ
What is the breakdown voltage tolerance for TPSMA7.5AHE3/5AT?
The TPSMA7.5AHE3/5AT has a specified breakdown voltage range of 7.13 V (min) to 7.88 V (max) at 10 mA test current, with 7.50 V as the nominal value. This ±5% tolerance ensures consistent clamping behavior across production lots and supports reliable overvoltage detection in safety-critical circuits where the TPSMA7.5AHE3/5AT is deployed.
Is TPSMA7.5AHE3/5AT qualified for automotive applications?
Yes, the TPSMA7.5AHE3/5AT carries the HE3 suffix, indicating RoHS-compliance and AEC-Q101 qualification per Vishay's ordering nomenclature. It is rated for TJ = 185 °C and meets MSL Level 1, making the TPSMA7.5AHE3/5AT suitable for under-hood and powertrain applications where automotive-grade reliability is mandatory.
What is the maximum clamping voltage of TPSMA7.5AHE3/5AT under surge conditions?
The TPSMA7.5AHE3/5AT exhibits a maximum clamping voltage (VC) of 11.3 V at its rated peak pulse current of 35.4 A using the standard 10/1000 µs waveform. This low clamping level ensures effective protection of downstream 5 V or 3.3 V logic components when the TPSMA7.5AHE3/5AT is correctly applied in series with appropriate current-limiting impedance.
Does TPSMA7.5AHE3/5AT support lead-free reflow assembly?
Yes, the TPSMA7.5AHE3/5AT is rated MSL Level 1 per J-STD-020 and qualified for lead-free reflow with a maximum peak temperature of 260 °C. Its matte tin-plated leads comply with J-STD-002 and JESD 22-B102, ensuring robust solder joint formation during standard SMT processes used for the TPSMA7.5AHE3/5AT.
How does the thermal performance of TPSMA7.5AHE3/5AT compare to standard SMA TVS diodes?
The TPSMA7.5AHE3/5AT supports a maximum junction temperature of +185 °C-significantly higher than typical SMA TVS diodes rated at +150 °C. This extended thermal capability enables sustained operation in high-ambient environments such as automotive engine compartments, where the TPSMA7.5AHE3/5AT maintains stable clamping characteristics without derating.
TPSMA7.5AHE3/5AT 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):
- 6.4V
- Voltage - Breakdown (Min):
- 7.13V
- Voltage - Clamping (Max) @ Ipp:
- 11.3V
- Current - Peak Pulse (10/1000µs):
- 35.4A
- 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)
TPSMA7.5AHE3/5AT FAQ
1.How can I place an order for TPSMA7.5AHE3/5AT through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMA7.5AHE3/5AT 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 TPSMA7.5AHE3/5AT reliable?
The price and inventory of TPSMA7.5AHE3/5AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPSMA7.5AHE3/5AT is usually 5 days.
3.What payment methods are accepted for TPSMA7.5AHE3/5AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMA7.5AHE3/5AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMA7.5AHE3/5AT?
TPSMA7.5AHE3/5AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMA7.5AHE3/5AT 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 TPSMA7.5AHE3/5AT?
For technical support, including TPSMA7.5AHE3/5AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMA7.5AHE3/5AT requirements.
6.How does Aetrix verify that TPSMA7.5AHE3/5AT is sourced from the original manufacturer or authorized distributors?
All TPSMA7.5AHE3/5AT 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 TPSMA7.5AHE3/5AT meets industry standards.
7.What is the process for return or replacement of TPSMA7.5AHE3/5AT?
All TPSMA7.5AHE3/5AT units undergo pre-shipment inspection (PSI). If there is an issue with TPSMA7.5AHE3/5AT, 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 TPSMA7.5AHE3/5AT part is unused and in its original packaging.
Return procedure for TPSMA7.5AHE3/5AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPSMA7.5AHE3/5AT Tags
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