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Vishay General Semiconductor - Diodes Division TPSMA7.5AHE3_B/H
- Part No.:
- TPSMA7.5AHE3_B/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
TPSMA7.5AHE3_B/H.pdf
- Description:
- TVS DIODE 6.4VWM 11.3VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:9,639
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Product details
Overview
TPSMA7.5AHE3_B/H 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, 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 TPSMA7.5AHE3_B/H datasheet, TPSMA7.5AHE3_B/H pinout, TPSMA7.5AHE3_B/H application, or TPSMA7.5AHE3_B/H equivalent, key selection criteria include unidirectional polarity, SMA (DO-214AC) package compatibility, AEC-Q101 qualification status, TJ = 185 °C capability, and verified 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 architecture 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 TA = 25 °C, derated linearly above 25 °C per Figure 2, and supports repetitive surge duty cycle ≤ 0.01 %. It meets MSL Level 1 (260 °C peak reflow) 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 at 10 mA - defines reliable conduction onset under transient stress |
| VWM | 6.40 V - maximum continuous reverse voltage before leakage exceeds 150 µA |
| VC @ IPPM | 11.3 V at 35.4 A - clamped voltage during 400 W surge, limiting downstream IC stress |
| PPPM | 400 W (10/1000 µs) - peak transient energy absorption capacity on PCB with 5 mm × 5 mm copper pads |
| TJ max. | +185 °C - enables operation in under-hood automotive and high-ambient industrial environments |
| Polarity | Unidirectional - cathode-band marked; blocks forward current, clamps reverse transients only |
| IFSM | 40 A (8.3 ms half-sine) - surge current handling without bond wire failure |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, matte tin-plated leads, RoHS-compliant and AEC-Q101 qualified (HE3 suffix). Cathode indicated by color band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current path terminal | Connected to lower-potential side of protected line; conducts during forward surge or bias |
| Cathode | Clamping reference terminal | Marked with band; connected to higher-potential side; initiates avalanche breakdown when reverse voltage exceeds VBR |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation optimized design | Enables stable VBR and low leakage (<150 µA at VWM) over lifetime and temperature |
| TJ = 185 °C capability | Supports placement near heat sources (e.g., power MOSFETs, engine control units) without derating |
| 400 W peak pulse power (10/1000 µs) | Absorbs IEC 61000-4-5 Level 4 surges (4 kV/2 Ω) on 12 V systems with margin |
| Meets MSL Level 1, 260 °C peak reflow | Compatible with standard lead-free SMT assembly without popcorn or delamination risk |
| AEC-Q101 qualified (HE3 suffix) | Validated for automotive electronics including body control modules and ADAS sensor interfaces |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC Digital Input |
|---|---|
Use Scenario: Protecting microcontroller GPIO and CAN transceiver power rails from load-dump and inductive kickback in vehicle door modules. IC Role / Device Role / Timing Role: Unidirectional TVS clamping reverse transients on 12 V supply and signal lines before they reach sensitive logic. Use Value: Prevents latch-up or permanent damage to MCU I/O pins during 12 V system switching events, validated per ISO 7637-2 Pulse 1/2/5a. | Use Scenario: Safeguarding 24 V DC digital input channels in programmable logic controllers against field-wiring induced surges. IC Role / Device Role / Timing Role: Fast-acting voltage clamp placed between field-side input and optocoupler input stage. Use Value: Maintains functional safety integrity by limiting transient voltage to <12 V, ensuring optocoupler remains within safe operating area during 1 kV/500 Ω surge tests. |
| Consumer Appliance Motor Driver | Telecom Power Supply OVP |
Use Scenario: Suppressing back-EMF spikes generated by brushed DC motors in smart home appliances (e.g., washing machine control boards). IC Role / Device Role / Timing Role: Parallel-connected TVS across motor terminals to clamp inductive flyback voltage. Use Value: Reduces EMI and prevents MOSFET drain-source breakdown, enabling use of lower-voltage-rated 30 V MOSFETs without snubber networks. | Use Scenario: Providing secondary overvoltage protection on 48 V telecom power distribution boards after primary DC-DC regulation. IC Role / Device Role / Timing Role: Standby clamping element that activates only if upstream regulator fails open-circuit. Use Value: Limits fault voltage to 11.3 V at 35.4 A, protecting downstream 12 V subsystems from catastrophic overvoltage exposure. |
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 400 W rating uses different test condition (1 kW peak for 1 ms); VC = 12.0 V @ 33.3 A | Higher clamping voltage reduces margin for low-voltage ICs; not AEC-Q101 qualified | Prefer TPSMA7.5AHE3_B/H where automotive qualification or tighter clamping is required |
| 1.5SMC7.5A | Larger SMC (DO-214AB) package; same VBR and PPPM, but VC = 12.9 V @ 31.0 A; higher thermal mass | Requires PCB layout change; better for sustained surge dissipation, less suited for space-constrained modules | Choose TPSMA7.5AHE3_B/H for compact automotive or portable designs needing AEC-Q101 compliance |
Compared with SMAJ7.5A and 1.5SMC7.5A, the TPSMA7.5AHE3_B/H delivers lower clamping voltage (11.3 V vs. ≥12.0 V), guaranteed AEC-Q101 qualification, and optimized thermal performance in the smaller SMA footprint - making it preferred for next-generation automotive and high-density industrial PCBs.
Availability
TPSMA7.5AHE3_B/H is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC inputs, and consumer appliance motor control requiring stable component supply, long-term lifecycle support, and AEC-Q101-compliant surge protection.
Supply support for TPSMA7.5AHE3_B/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, high-temperature operation, and automotive-grade qualification.
The TPSMA series belongs to Vishay's PAR® (Protected Avalanche Rectifier) transient voltage suppressor product line, engineered specifically for robust, high-temperature-stable clamping in automotive, industrial, and telecom power and signal line protection.
FAQ
What is the clamping voltage of the TPSMA7.5AHE3_B/H and how is it measured?
The TPSMA7.5AHE3_B/H has a maximum clamping voltage (VC) of 11.3 V at 35.4 A peak pulse current, measured under standardized 10/1000 µs waveform conditions per IEC 61000-4-5. This value reflects the actual voltage seen by downstream circuitry during a surge event and is confirmed per Vishay Document Number 88405, Table on page 2.
Is the TPSMA7.5AHE3_B/H qualified for automotive applications?
Yes, the TPSMA7.5AHE3_B/H carries the HE3 suffix, indicating it is RoHS-compliant and AEC-Q101 qualified per Vishay's ordering nomenclature. This qualification covers stress testing for temperature cycling, humidity, mechanical shock, and surge robustness - making it suitable for under-hood and cabin electronics in passenger vehicles and commercial vehicles.
What does the "B/H" suffix mean in TPSMA7.5AHE3_B/H?
The "B/H" suffix in TPSMA7.5AHE3_B/H denotes the revision code (B) and packaging format (H = 7-inch plastic tape and reel, 1800 units per reel). This matches Vishay's ordering information table on page 3 of Document 88405 and confirms full traceability and standard SMT handling compatibility.
Can the TPSMA7.5AHE3_B/H be used in bidirectional protection circuits?
No, the TPSMA7.5AHE3_B/H is unidirectional only, as explicitly stated in the Features section of the datasheet. It clamps reverse transients only and conducts forward current like a standard diode. For bidirectional protection, a separate part number (e.g., TPSMA7.5CA) would be required - the TPSMA7.5AHE3_B/H must be oriented with cathode toward the protected line's higher potential.
What is the maximum operating temperature for the TPSMA7.5AHE3_B/H?
The TPSMA7.5AHE3_B/H has a maximum junction temperature (TJ) rating of +185 °C, verified per the Maximum Ratings table on page 1 of Vishay Document 88405. This allows reliable operation in high-ambient environments such as engine compartments, industrial motor drives, and enclosed power supplies without thermal derating below 150 °C ambient.
TPSMA7.5AHE3_B/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:
- Active
- 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_B/H FAQ
1.How can I place an order for TPSMA7.5AHE3_B/H through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMA7.5AHE3_B/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 TPSMA7.5AHE3_B/H reliable?
The price and inventory of TPSMA7.5AHE3_B/H 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_B/H is usually 5 days.
3.What payment methods are accepted for TPSMA7.5AHE3_B/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMA7.5AHE3_B/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMA7.5AHE3_B/H?
TPSMA7.5AHE3_B/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMA7.5AHE3_B/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 TPSMA7.5AHE3_B/H?
For technical support, including TPSMA7.5AHE3_B/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMA7.5AHE3_B/H requirements.
6.How does Aetrix verify that TPSMA7.5AHE3_B/H is sourced from the original manufacturer or authorized distributors?
All TPSMA7.5AHE3_B/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 TPSMA7.5AHE3_B/H meets industry standards.
7.What is the process for return or replacement of TPSMA7.5AHE3_B/H?
All TPSMA7.5AHE3_B/H units undergo pre-shipment inspection (PSI). If there is an issue with TPSMA7.5AHE3_B/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 TPSMA7.5AHE3_B/H part is unused and in its original packaging.
Return procedure for TPSMA7.5AHE3_B/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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