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Vishay General Semiconductor - Diodes Division TPSMA7.5AHE3/61T
- Part No.:
- TPSMA7.5AHE3/61T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
TPSMA7.5AHE3/61T.pdf
- Description:
- TVS DIODE 6.4VWM 11.3VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:6,211
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Product details
Overview
TPSMA7.5AHE3/61T from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor (TVS) diode in SMA (DO-214AC) package, rated for 7.5 V breakdown voltage (VBR), 400 W peak pulse power (10/1000 µs), and 185 °C maximum junction temperature - designed to protect MOSFETs, ICs, and sensor signal lines against inductive switching transients and lightning surges in automotive and industrial systems.
For engineers reviewing the TPSMA7.5AHE3/61T datasheet, TPSMA7.5AHE3/61T pinout, TPSMA7.5AHE3/61T application, or TPSMA7.5AHE3/61T equivalent, key selection criteria include clamping voltage (35.4 V at 11.3 A), unidirectional polarity, AEC-Q101 qualification, MSL Level 1 rating, and TJ = 185 °C capability for high-reliability underhood and powertrain environments.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology with optimized junction passivation for stable clamping performance across temperature. It delivers low incremental surge resistance and fast response time to limit transient overvoltage before downstream components are stressed.
Rated for 400 W peak pulse power per 10/1000 µs waveform at TA = 25 °C (derated above ambient), it supports repetitive surge duty cycles up to 0.01 % and withstands 40 A non-repetitive forward surge current (8.3 ms half-sine). Its 6.40 V stand-off voltage ensures reliable blocking during normal operation while maintaining tight VBR tolerance (±5 %).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 7.13 / 7.50 / 7.88 V - precise breakdown threshold ensures predictable clamping onset without premature conduction |
| VWM | 6.40 V - maximum continuous reverse operating voltage; provides 0.9 V margin below VBR min for noise immunity |
| VC @ IPPM | 35.4 V - clamping voltage at 11.3 A peak pulse current; limits stress on protected ICs during surge events |
| PPPM | 400 W - peak pulse power handling per 10/1000 µs waveform; meets IEC 61000-4-5 Level 4 requirements |
| TJ max. | +185 °C - enables use in high-temperature automotive under-hood locations without derating |
| Polarity | Unidirectional - protects against positive-going transients only; cathode band denotes polarity |
| MSL Level | Level 1 (J-STD-020) - supports lead-free reflow up to 260 °C peak without moisture-induced 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 | Transient current return path | Connected to ground or low-impedance reference; carries full surge current during clamping |
| Cathode | Protected line connection point | Connected to signal/power line being protected; voltage referenced to anode during clamping |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation optimized design | Enables stable VBR and leakage performance over 1000+ thermal cycles and 15-year field life |
| AEC-Q101 qualification (HE3 suffix) | Validated for automotive-grade reliability including HTOL, TC, UHAST, and ESD testing per AEC standard |
| 185 °C junction temperature rating | Supports direct placement near power MOSFETs or ECUs in engine control modules without thermal derating |
| 400 W peak pulse power (10/1000 µs) | Withstands IEC 61000-4-5 combination wave surges up to ±2 kV (500 Ω source) in industrial interfaces |
| Low clamping ratio (VC/VBR ≈ 4.7) | Minimizes overvoltage overshoot during fast transients, reducing risk of gate oxide damage in protected MOSFETs |
Applications
| Automotive Powertrain Sensors | Industrial Motor Drive Inputs |
|---|---|
Use Scenario: Protecting crankshaft position sensor signal lines from load dump and alternator ripple in 12 V/24 V vehicle electrical systems. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between sensor output and microcontroller input to shunt transient energy to ground. Use Value: Prevents false triggering and latch-up in 3.3 V/5 V sensor interface ICs during ISO 7637-2 Pulse 5a (load dump) events. | Use Scenario: Safeguarding analog feedback inputs (e.g., current sense, temperature) on motor drive control boards exposed to inductive kickback. IC Role / Device Role / Timing Role: Transient suppression at signal entry point before op-amp or ADC front-end stages. Use Value: Maintains measurement accuracy by limiting input voltage to ≤35.4 V during 40 A inductive turn-off spikes. |
| Telecom Line Interface Protection | Consumer Appliance Control Boards |
Use Scenario: Shielding RS-485 transceiver data lines from EFT and lightning-induced surges in outdoor base stations. IC Role / Device Role / Timing Role: Primary protection device on differential bus lines, coordinated with secondary GDT or polymer PTC. Use Value: Achieves <1 ns response time and <35.4 V clamping to preserve signal integrity and prevent transceiver latch-up. | Use Scenario: Guarding microcontroller GPIOs and relay driver outputs in washing machine control units subject to relay coil flyback. IC Role / Device Role / Timing Role: Localized TVS at each relay driver output to absorb 40 A surge currents before reaching MCU pins. Use Value: Eliminates need for external snubbers and extends MCU lifetime in high-cycle appliance applications. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ7.5A | Same VBR (7.5 V), but SMB (DO-214AA) package; 600 W PPPM, higher clamping voltage (36.0 V) | Higher power handling suits larger PCB areas; less suitable for space-constrained automotive modules | Select when board layout allows larger footprint and higher surge margin is required |
| 1.5SMC7.5A | Same VBR, but SMC (DO-214AB) package; 1500 W PPPM, clamping voltage 12.4 V at 120 A | Designed for primary-level system protection; requires coordination with secondary TVS due to lower VC | Choose for main DC rail protection where lower clamping voltage justifies larger size and cost |
Compared with SMBJ7.5A and 1.5SMC7.5A, the TPSMA7.5AHE3/61T offers optimal balance of compact SMA footprint, AEC-Q101 qualification, and precise 35.4 V clamping - making it preferred for space-limited, high-reliability automotive signal-line protection where consistent thermal performance up to 185 °C is mandatory.
Availability
TPSMA7.5AHE3/61T is available at Aetrix Electronics and suitable for automotive powertrain sensors, industrial motor drive inputs, telecom line interface protection, and consumer appliance control boards requiring stable component supply across extended temperature and surge conditions.
Supply support for TPSMA7.5AHE3/61T 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 qualification.
The TPSMA7.5AHE3/61T belongs to Vishay's PAR® (Precision Avalanche Regulator) TVS family, engineered specifically for robust transient suppression in harsh-environment applications including engine control, battery management, and industrial automation.
FAQ
What is the clamping voltage of the TPSMA7.5AHE3/61T and how is it measured?
The TPSMA7.5AHE3/61T has a maximum clamping voltage (VC) of 35.4 V, measured at its peak pulse current (IPPM) of 11.3 A using a 10/1000 µs waveform. This value is guaranteed per the Vishay datasheet (Doc. #88405) and reflects worst-case voltage seen by protected circuitry during standardized surge events - critical for ensuring downstream ICs remain within absolute maximum ratings.
Is the TPSMA7.5AHE3/61T AEC-Q101 qualified and what does the HE3 suffix indicate?
Yes, the TPSMA7.5AHE3/61T is AEC-Q101 qualified. The HE3 suffix explicitly denotes RoHS-compliant construction with matte tin-plated leads, JESD201 Class 2 whisker resistance, and full qualification to AEC-Q101 stress test requirements - confirming suitability for automotive powertrain and chassis applications per Vishay's ordering documentation.
What is the standoff voltage (VWM) of the TPSMA7.5AHE3/61T and why does it matter?
The TPSMA7.5AHE3/61T has a maximum working peak reverse voltage (VWM) of 6.40 V. This parameter defines the highest continuous reverse voltage the device can block without significant leakage - providing essential margin below its 7.13 V minimum breakdown voltage to prevent false triggering during normal operation with ripple or noise.
Can the TPSMA7.5AHE3/61T be used in bidirectional protection circuits?
No, the TPSMA7.5AHE3/61T is unidirectional only, as confirmed in the Vishay datasheet. It protects against positive-going transients on the cathode side relative to anode. For bidirectional protection, a separate device such as the TPSMA7.5CAHE3/61T (complementary dual) or discrete back-to-back configuration would be required.
What is the thermal performance limit of the TPSMA7.5AHE3/61T and how does it affect PCB layout?
The TPSMA7.5AHE3/61T supports a maximum junction temperature (TJ) of +185 °C, enabling operation in high-ambient environments like engine compartments. To maintain this rating, Vishay specifies mounting on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal - underscoring the need for adequate thermal copper area in PCB layout to avoid exceeding TJ under sustained surge duty.
TPSMA7.5AHE3/61T 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)
TPSMA7.5AHE3/61T FAQ
1.How can I place an order for TPSMA7.5AHE3/61T through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMA7.5AHE3/61T 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 TPSMA7.5AHE3/61T reliable?
The price and inventory of TPSMA7.5AHE3/61T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPSMA7.5AHE3/61T is usually 5 days.
3.What payment methods are accepted for TPSMA7.5AHE3/61T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMA7.5AHE3/61T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMA7.5AHE3/61T?
TPSMA7.5AHE3/61T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMA7.5AHE3/61T 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 TPSMA7.5AHE3/61T?
For technical support, including TPSMA7.5AHE3/61T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMA7.5AHE3/61T requirements.
6.How does Aetrix verify that TPSMA7.5AHE3/61T is sourced from the original manufacturer or authorized distributors?
All TPSMA7.5AHE3/61T 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 TPSMA7.5AHE3/61T meets industry standards.
7.What is the process for return or replacement of TPSMA7.5AHE3/61T?
All TPSMA7.5AHE3/61T units undergo pre-shipment inspection (PSI). If there is an issue with TPSMA7.5AHE3/61T, 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 TPSMA7.5AHE3/61T part is unused and in its original packaging.
Return procedure for TPSMA7.5AHE3/61T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPSMA7.5AHE3/61T Tags
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