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Vishay General Semiconductor - Diodes Division TPSMA7.5HE3/5AT
- Part No.:
- TPSMA7.5HE3/5AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
TPSMA7.5HE3/5AT.pdf
- Description:
- TVS DIODE 6.05VWM 11.7VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:4,113
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Product details
Overview
TPSMA7.5HE3/5AT from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor (TVS) designed for clamping inductive switching surges and lightning-induced transients on power and signal lines. It features a 7.5 V breakdown voltage (VBR), 400 W peak pulse power (10/1000 µs), 11.3 V maximum clamping voltage at 35.4 A, 6.4 V stand-off voltage (VWM), and operates up to +185 °C junction temperature - used in automotive sensor protection and industrial I/O interface circuits.
For engineers reviewing the TPSMA7.5HE3/5AT datasheet, TPSMA7.5HE3/5AT pinout, TPSMA7.5HE3/5AT application, or TPSMA7.5HE3/5AT equivalent, key selection criteria include unidirectional polarity, SMA (DO-214AC) package compatibility, AEC-Q101 qualification status, TJ = 185 °C capability, 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 unidirectional structure provides precise reverse-biased clamping with fast response time and excellent clamping ratio (VC/VBR ≈ 1.51).
The device is rated for 400 W peak pulse power per 10/1000 µs waveform at 0.01 % duty cycle, derated above 25 °C per Fig. 2, and supports 40 A non-repetitive forward surge current (8.3 ms half-sine). It meets MSL Level 1 and JESD 201 Class 2 whisker test requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 7.13 / 7.50 / 7.88 V at 10 mA - defines precise reverse conduction onset for reliable overvoltage triggering |
| VWM | 6.40 V - maximum continuous reverse operating voltage before leakage exceeds 150 µA |
| VC @ IPPM | 11.3 V at 35.4 A - clamping voltage during 400 W surge, limiting downstream stress |
| PPPM | 400 W (10/1000 µs) - peak transient energy absorption capacity without failure |
| TJ max. | +185 °C - enables use in under-hood automotive and high-ambient industrial environments |
| Polarity | Unidirectional - protects against negative transients only; cathode marked by band |
| Package | SMA (DO-214AC) - industry-standard SMD outline with 0.208" x 0.157" footprint and matte tin leads |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, molded plastic case meeting UL 94 V-0; terminals are matte tin plated, solderable per J-STD-002 and JESD 22-B102; cathode indicated by color band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / reverse surge return path | Connected to protected line ground or low-side reference; carries full surge current during clamping |
| Cathode | Clamping node / high-side connection | Connected to protected line (e.g., 5 V rail); initiates avalanche conduction when VAK ≥ VBR |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation optimized design | Enables stable VBR and low leakage (<150 µA at VWM) across -65 °C to +185 °C |
| AEC-Q101 qualified (HE3 suffix) | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD |
| 400 W peak pulse power (10/1000 µs) | Withstands repetitive inductive switch-off spikes in motor drivers and solenoid controls |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients (e.g., ISO 7637-2 Pulse 1/2a) |
| MSL Level 1, 260 °C reflow compatible | Supports standard lead-free SMT assembly without pre-baking or special handling |
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 ESD in engine control units. IC Role / Device Role / Timing Role: Unidirectional TVS placed between signal line and chassis ground to clamp negative transients below IC absolute maximum ratings. Use Value: Prevents latch-up or permanent damage to 5 V tolerant interfaces while maintaining <150 µA leakage at 6.4 V operating bias. | Use Scenario: Safeguarding 24 V digital input modules in programmable logic controllers exposed to relay coil flyback and field wiring surges. IC Role / Device Role / Timing Role: Standoff-clamp TVS connected across input terminals to shunt >400 W transients within nanoseconds. Use Value: Enables compliance with IEC 61000-4-4 (EFT) and IEC 61000-4-5 (surge) without additional series impedance or timing delays. |
| Consumer Power Adapter Output | Telecom DC Power Feeds |
Use Scenario: Secondary-side overvoltage suppression on 5–12 V outputs of AC/DC adapters subject to feedback loop failure or rectifier short. IC Role / Device Role / Timing Role: Fast-acting crowbar element that clamps output to ≤11.3 V during fault, triggering upstream OCP. Use Value: Limits sustained overvoltage to safe levels for USB peripherals and embedded controllers without sacrificing steady-state efficiency. | Use Scenario: Protecting PoE-powered devices (e.g., IP cameras, access points) from induced surges on 48 V DC feed lines. IC Role / Device Role / Timing Role: Primary-level TVS on DC input rail, coordinated with upstream GDT or MOV for multi-stage protection. Use Value: Provides low-capacitance (<50 pF), high-power clamping (400 W) without distorting high-speed data signals on adjacent pairs. |
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 1.5 kW peak pulse rating; no AEC-Q101 qualification | Used in commercial/industrial designs where automotive qualification is not required | Select SMAJ7.5A for cost-sensitive non-automotive applications needing identical clamping but no automotive validation |
| 1.5SMC7.5A | Larger SMC (DO-214AB) package, same electrical specs, higher thermal mass; 1.5 kW peak pulse rating | Suitable where board space allows larger footprint and higher surge margin is needed | Choose 1.5SMC7.5A when PCB layout permits larger pad area and higher single-pulse robustness is prioritized |
Compared with SMAJ7.5A and 1.5SMC7.5A, the TPSMA7.5HE3/5AT uniquely combines AEC-Q101 qualification, SMA footprint, and 185 °C operation - making it the only option qualified for under-hood automotive use without package or reliability trade-offs.
Availability
TPSMA7.5HE3/5AT is available at Aetrix Electronics and suitable for automotive sensor protection, industrial PLC I/O protection, and consumer power adapter output requiring stable component supply, long-term lifecycle support, and traceable AEC-Q101-compliant sourcing.
Supply support for TPSMA7.5HE3/5AT 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, MOSFETs, and optoelectronics with emphasis on reliability, high-temperature operation, and automotive qualification.
The TPSMA7.5HE3/5AT belongs to Vishay's PAR® family of high-temperature TVS diodes, engineered specifically for robust transient suppression in harsh environments including automotive powertrain, industrial automation, and telecom infrastructure.
FAQ
What is the clamping voltage of the TPSMA7.5HE3/5AT at its rated peak pulse current?
The TPSMA7.5HE3/5AT has a maximum clamping voltage (VC) of 11.3 V at its rated peak pulse current of 35.4 A (corresponding to 400 W with a 10/1000 µs waveform). This value is measured per IEC 61000-4-5 test conditions and ensures downstream ICs remain within safe operating limits during surge events. The TPSMA7.5HE3/5AT maintains this clamping performance across its full operating temperature range.
Is the TPSMA7.5HE3/5AT qualified for automotive applications?
Yes, the TPSMA7.5HE3/5AT is AEC-Q101 qualified, as confirmed by its HE3 suffix and documentation in Vishay's 88405 datasheet. It undergoes rigorous stress testing including temperature cycling, high-temperature reverse bias (HTRB), and mechanical shock - validating suitability for automotive powertrain, body electronics, and ADAS sensor modules. The TPSMA7.5HE3/5AT is explicitly designated for automotive use in the ordering information section.
What does the "HE3" suffix indicate in TPSMA7.5HE3/5AT?
The "HE3" suffix in TPSMA7.5HE3/5AT denotes RoHS-compliant construction and AEC-Q101 qualification per Vishay's standardized naming convention. It also indicates compliance with JESD 201 Class 2 whisker resistance and MSL Level 1 moisture sensitivity. The "/5AT" denotes tape-and-reel packaging in 7" reels with 1800 units per reel - a detail specified in Vishay's ordering information table for TPSMA7.5HE3/5AT.
How does the TPSMA7.5HE3/5AT compare to bidirectional TVS diodes in circuit design?
The TPSMA7.5HE3/5AT is unidirectional and must be oriented with cathode toward the protected line - unlike bidirectional types, it only clamps negative transients relative to ground. This makes it ideal for DC power rails and single-polarity signal lines where polarity is fixed. Its lower leakage (<150 µA at 6.4 V) and tighter VBR tolerance improve noise immunity versus bidirectional alternatives. The TPSMA7.5HE3/5AT is not interchangeable with bidirectional parts without schematic and layout review.
What is the maximum operating junction temperature for the TPSMA7.5HE3/5AT?
The TPSMA7.5HE3/5AT has a maximum operating junction temperature (TJ) of +185 °C, verified per the Absolute Maximum Ratings table in Vishay document 88405. This rating enables reliable operation in high-ambient environments such as engine compartments, industrial motor drives, and enclosed telecom equipment. Derating curves in Figure 2 confirm usable power dissipation down to 50 % at 150 °C ambient, confirming the TPSMA7.5HE3/5AT's suitability for extended high-temperature service.
TPSMA7.5HE3/5AT 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):
- 6.05V
- Voltage - Breakdown (Min):
- 6.75V
- Voltage - Clamping (Max) @ Ipp:
- 11.7V
- Current - Peak Pulse (10/1000µs):
- 34.2A
- 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)
TPSMA7.5HE3/5AT FAQ
1.How can I place an order for TPSMA7.5HE3/5AT through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMA7.5HE3/5AT 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 TPSMA7.5HE3/5AT reliable?
The price and inventory of TPSMA7.5HE3/5AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPSMA7.5HE3/5AT is usually 5 days.
3.What payment methods are accepted for TPSMA7.5HE3/5AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMA7.5HE3/5AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMA7.5HE3/5AT?
TPSMA7.5HE3/5AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMA7.5HE3/5AT 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 TPSMA7.5HE3/5AT?
For technical support, including TPSMA7.5HE3/5AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMA7.5HE3/5AT requirements.
6.How does Aetrix verify that TPSMA7.5HE3/5AT is sourced from the original manufacturer or authorized distributors?
All TPSMA7.5HE3/5AT 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 TPSMA7.5HE3/5AT meets industry standards.
7.What is the process for return or replacement of TPSMA7.5HE3/5AT?
All TPSMA7.5HE3/5AT units undergo pre-shipment inspection (PSI). If there is an issue with TPSMA7.5HE3/5AT, 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 TPSMA7.5HE3/5AT part is unused and in its original packaging.
Return procedure for TPSMA7.5HE3/5AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPSMA7.5HE3/5AT Tags
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