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Vishay General Semiconductor - Diodes Division TPSMA7.5AHE3_A/I
- Part No.:
- TPSMA7.5AHE3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
TPSMA7.5AHE3_A/I.pdf
- Description:
- TVS DIODE 6.4VWM 11.3VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:6,039
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Product details
Overview
TPSMA7.5AHE3_A/I 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 on power and signal lines. 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_A/I datasheet, TPSMA7.5AHE3_A/I pinout, TPSMA7.5AHE3_A/I application, or TPSMA7.5AHE3_A/I equivalent, key selection criteria include unidirectional polarity, SMA (DO-214AC) package compatibility, AEC-Q101 qualification status, TJ = 185 °C thermal capability, and clamping performance under 10/1000 µs surge conditions.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology with optimized junction passivation for stable clamping across temperature. Its unidirectional configuration enables robust forward-biased surge handling on DC power rails while maintaining low leakage (<150 µA at 6.4 V) and fast response time.
The device delivers 400 W peak pulse power per 10/1000 µs waveform with 0.01 % duty cycle, supported by low incremental surge resistance and excellent clamping ratio (VC/VBR ≈ 1.51). It meets MSL Level 1 per J-STD-020 and is 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 reliable triggering above system stand-off voltage of 6.4 V |
| VWM | 6.40 V - maximum continuous reverse operating voltage without significant leakage |
| VC @ IPPM | 11.3 V at 35.4 A - clamps transients to safe levels for downstream 12 V logic or MOSFET gate drivers |
| PPPM | 400 W - handles high-energy surges from inductive loads or ESD events per ISO 7637-2/IEC 61000-4-5 |
| TJ max. | +185 °C - supports under-hood automotive environments and high-power industrial PCB layouts |
| Polarity | Unidirectional - protects DC supply rails where reverse conduction is not required |
| Package | SMA (DO-214AC) - industry-standard SMD footprint compatible with automated assembly and thermal pad design |
Pinout & Package
SMA (DO-214AC) package with molded epoxy body, matte tin-plated leads, and cathode band marking. Complies with UL 94 V-0 flammability rating and JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Anode of internal PN junction | Connected to protected line; conducts during overvoltage to shunt current to ground |
| Anode | Cathode of internal PN junction | Typically tied to system ground or low-impedance return path for effective clamping |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and surge endurance |
| 185 °C junction rating | Enables placement near heat sources (e.g., power converters) without derating penalties |
| 400 W peak pulse power | Withstands repetitive 10/1000 µs transients up to 0.01 % duty cycle in harsh electrical environments |
| Low clamping voltage ratio | VC/VBR = 1.51 ensures minimal overvoltage stress on protected ICs during surge events |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and reflow at 260 °C peak without baking preconditioning |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Clamping |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs against load dump and alternator transients per ISO 7637-2 Pulse 5a. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power input and ground to clamp positive-going surges before they reach LDOs or microcontrollers. Use Value: Limits transient voltage to ≤11.3 V at 35.4 A, preserving integrity of 16 V-rated input stages without sacrificing response speed. |
Use Scenario: Shielding analog sensor outputs (e.g., pressure, temperature) from ESD and cable discharge events in factory automation systems. IC Role / Device Role / Timing Role: Low-capacitance TVS connected across differential signal pair to suppress common-mode surges while minimizing signal distortion. Use Value: Maintains <150 µA leakage at 6.4 V, ensuring no DC offset error in precision 4–20 mA loops or ratiometric bridge sensors. |
| Consumer Power Adapter Input Stage | Telecom DC Power Feeds |
Use Scenario: Safeguarding AC/DC adapter secondary-side outputs against surge coupling from primary-side transients or hot-plug events. IC Role / Device Role / Timing Role: Standoff-rated TVS mounted directly at output connector to absorb energy before it reaches USB-PD controllers or buck regulators. Use Value: Delivers 400 W pulse handling in compact SMA package, enabling cost-effective single-device protection without external series impedance. |
Use Scenario: Hardening -48 V telecom power feeds against lightning-induced surges entering via outdoor cabling per IEC 61000-4-5 Level 4. IC Role / Device Role / Timing Role: Cascaded unidirectional TVS used in conjunction with GDTs to provide staged clamping with controlled let-through voltage. Use Value: Achieves 11.3 V clamping at 35.4 A while sustaining 185 °C operation, supporting long-term deployment in uncooled central office cabinets. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ7.5A | Same SMA package, 7.5 V VBR, but rated for 400 W with 1.0 ms pulse (not 10/1000 µs); higher VC = 12.0 V at 33.3 A | Limited to lower-energy transients; less suitable for automotive load dump where 10/1000 µs compliance is mandatory | Prefer TPSMA7.5AHE3_A/I when AEC-Q101 qualification and tighter clamping are required |
| 1.5SMC7.5A | Higher power (1500 W), DO-214AB (SMC) package; larger footprint and thermal mass; VC = 12.9 V at 116.3 A | Better for high-current surge events but incompatible with space-constrained SMA layouts and automated pick-and-place | Choose TPSMA7.5AHE3_A/I for board area optimization and automotive-compliant thermal performance in same footprint |
Compared with SMAJ7.5A and 1.5SMC7.5A, the TPSMA7.5AHE3_A/I offers superior thermal robustness (185 °C vs. 150 °C), tighter clamping (11.3 V vs. ≥12.0 V), and AEC-Q101 validation-making it the preferred choice for automotive and high-reliability industrial designs where package size and temperature margin are critical.
Availability
TPSMA7.5AHE3_A/I is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor interfaces, and telecom power feed protection requiring stable component supply and full traceability.
Supply support for TPSMA7.5AHE3_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, TVS devices, and optoelectronics with emphasis on reliability and high-temperature performance.
The TPSMA7.5AHE3_A/I belongs to Vishay's PAR® family of transient voltage suppressors engineered specifically for automotive-grade surge immunity and high-temperature stability in harsh environments.
FAQ
What is the clamping voltage of the TPSMA7.5AHE3_A/I at its rated peak pulse current?
The TPSMA7.5AHE3_A/I has a maximum clamping voltage (VC) of 11.3 V at its rated peak pulse current (IPPM) of 35.4 A, measured using a 10/1000 µs waveform. This value ensures that protected circuits experience minimal overvoltage during surge events, making the TPSMA7.5AHE3_A/I especially effective for safeguarding 12 V automotive electronics and industrial power supplies.
Is the TPSMA7.5AHE3_A/I qualified for automotive applications?
Yes, the TPSMA7.5AHE3_A/I is AEC-Q101 qualified, as indicated by the "HE3" suffix and confirmed in Vishay's official documentation. It undergoes rigorous testing for temperature cycling, high-temperature reverse bias, and surge endurance-ensuring suitability for under-hood and chassis-mounted automotive modules where reliability and thermal resilience are critical.
What does the "HE3" suffix signify in TPSMA7.5AHE3_A/I?
The "HE3" suffix denotes RoHS-compliant construction and AEC-Q101 qualification. The "A" in the ordering code indicates revision level, and "I" specifies packaging in 13-inch tape-and-reel format (7500 units per reel). This distinguishes the TPSMA7.5AHE3_A/I from non-automotive variants like HM3 (halogen-free) or base P/Ns without qualification markers.
How does the TPSMA7.5AHE3_A/I compare to standard SMAJ-series TVS diodes?
The TPSMA7.5AHE3_A/I provides tighter clamping (11.3 V vs. 12.0 V), higher junction temperature rating (185 °C vs. 150 °C), and formal AEC-Q101 qualification-unlike generic SMAJ7.5A parts. These differences make the TPSMA7.5AHE3_A/I more suitable for mission-critical automotive and industrial applications where thermal margin and standardized qualification are mandatory.
What is the standoff voltage (VWM) and why is it important for TPSMA7.5AHE3_A/I selection?
The TPSMA7.5AHE3_A/I has a maximum working standoff voltage (VWM) of 6.40 V, meaning it remains non-conductive below this DC or RMS voltage. This parameter is essential to avoid false triggering during normal operation-especially in 5 V or 12 V systems where margin between VWM and nominal rail voltage must prevent leakage-induced power loss or noise coupling.
TPSMA7.5AHE3_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):
- 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_A/I FAQ
1.How can I place an order for TPSMA7.5AHE3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMA7.5AHE3_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 TPSMA7.5AHE3_A/I reliable?
The price and inventory of TPSMA7.5AHE3_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 TPSMA7.5AHE3_A/I is usually 5 days.
3.What payment methods are accepted for TPSMA7.5AHE3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMA7.5AHE3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMA7.5AHE3_A/I?
TPSMA7.5AHE3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMA7.5AHE3_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 TPSMA7.5AHE3_A/I?
For technical support, including TPSMA7.5AHE3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMA7.5AHE3_A/I requirements.
6.How does Aetrix verify that TPSMA7.5AHE3_A/I is sourced from the original manufacturer or authorized distributors?
All TPSMA7.5AHE3_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 TPSMA7.5AHE3_A/I meets industry standards.
7.What is the process for return or replacement of TPSMA7.5AHE3_A/I?
All TPSMA7.5AHE3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with TPSMA7.5AHE3_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 TPSMA7.5AHE3_A/I part is unused and in its original packaging.
Return procedure for TPSMA7.5AHE3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPSMA7.5AHE3_A/I Tags
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