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Vishay General Semiconductor - Diodes Division TPSMA30AHE3/5AT
- Part No.:
- TPSMA30AHE3/5AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
TPSMA30AHE3/5AT.pdf
- Description:
- TVS DIODE 25.6VWM 41.4VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:6,878
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Product details
Overview
TPSMA30AHE3/5AT from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMA (DO-214AC) package, designed for clamping voltage transients on power and signal lines. It features a 30 V nominal breakdown voltage (VBR), 41.4 V maximum clamping voltage (VC) at 9.7 A peak pulse current, 400 W peak pulse power (10/1000 µs), 1.0 W steady-state power dissipation, and 185 °C maximum junction temperature - enabling robust protection in automotive power rails and industrial sensor interfaces.
For engineers reviewing the TPSMA30AHE3/5AT datasheet, TPSMA30AHE3/5AT pinout, TPSMA30AHE3/5AT application, or TPSMA30AHE3/5AT equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification (via HE3 suffix), MSL Level 1 moisture sensitivity, and compatibility with high-reliability PCB layouts using 5.0 mm × 5.0 mm copper pads per terminal.
Technical Context
This TVS diode operates as a voltage-clamping device in parallel with protected circuitry, triggering conduction when reverse voltage exceeds its 28.5–31.5 V breakdown range. Its passivated anisotropic rectifier technology ensures stable leakage (<1.0 µA at 25.6 V) and low incremental surge resistance, critical for fast transient suppression in automotive ECUs and industrial I/O modules.
The device is rated for non-repetitive 10/1000 µs surges up to 400 W and repetitive 8.3 ms half-sine surges up to 40 A (IFSM). Its thermal design supports operation from –65 °C to +185 °C junction temperature, with derating applied above 25 °C ambient per Figure 2 of the datasheet.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 28.5 V / 30.0 V / 31.5 V - defines precise clamping onset threshold under 1.0 mA test current |
| VC @ IPPM | 41.4 V at 9.7 A - maximum voltage seen by protected circuit during 400 W transient event |
| PPPM | 400 W (10/1000 µs) - peak surge energy handling capacity without failure |
| VWM | 25.6 V - maximum continuous reverse working voltage before leakage rises significantly |
| IR @ VWM | <1.0 µA at 25.6 V - ensures minimal standby power loss and signal integrity in low-current circuits |
| TJ max. | +185 °C - enables use in under-hood automotive environments and high-temperature industrial enclosures |
| Package | SMA (DO-214AC) - industry-standard surface-mount outline with cathode band marking and 0.208" length |
Pinout & Package
SMA (DO-214AC) package with molded epoxy body, matte tin-plated leads, and visible cathode band. Compliant with UL 94 V-0 flammability rating and J-STD-002/JESD 22-B102 solderability standards. MSL Level 1 (peak reflow 260 °C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink | Connected to protected line; conducts surge current to ground when VREV > VBR |
| Anode | Reference node | Typically tied to system ground or low-impedance return path for clamping action |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation optimized design | Enables stable VBR and low leakage across –65 °C to +185 °C operating range |
| AEC-Q101 qualified (HE3 suffix) | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing |
| 400 W peak pulse power (10/1000 µs) | Withstands ISO 7637-2 Pulse 1, 2a, 3a/b and IEC 61000-4-5 surge events in 12 V systems |
| Very fast response time (<1 ps) | Clamps transients before downstream ICs or MOSFETs experience overvoltage stress |
| Low incremental surge resistance | Minimizes VC overshoot during high-di/dt events, improving protection margin |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed microcontroller power inputs against load-dump and alternator ripple transients in engine control units. IC Role / Device Role / Timing Role: Parallel-connected clamping device that diverts surge current away from LDO regulators and MCU VCC pins. Use Value: Maintains VCC below 41.4 V during 400 W transients, preventing latch-up or permanent damage to 5 V/3.3 V logic. | Use Scenario: Safeguarding analog output lines (e.g., 4–20 mA current loop) from ESD and inductive switching noise in factory automation sensors. IC Role / Device Role / Timing Role: Bidirectional protection element placed at connector interface to shunt fast transients before reaching op-amp input stages. Use Value: Limits voltage excursion to ≤41.4 V with sub-nanosecond response, preserving signal fidelity and ADC accuracy. |
| Telecom DC Power Input Protection | Consumer Device USB Port Protection |
Use Scenario: Shielding 48 V PoE-powered equipment front-end converters from lightning-induced surges on Ethernet cables. IC Role / Device Role / Timing Role: Primary-level TVS placed upstream of DC-DC converter input to absorb bulk surge energy before regulation stage. Use Value: Handles 400 W pulses without degradation, supporting EN 61000-4-5 Level 4 compliance in telecom infrastructure. | Use Scenario: Adding secondary-level overvoltage protection on USB VBUS lines in portable audio devices exposed to hot-plug and cable discharge events. IC Role / Device Role / Timing Role: Unidirectional clamp between VBUS and GND to prevent >41.4 V from reaching USB controller ICs during ESD events. Use Value: Meets IEC 61000-4-2 ±15 kV contact discharge requirement while maintaining <1.0 µA leakage at 5 V nominal operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ30A | Same SMA package, 30 V VBR, but rated for 400 W with 1.0 kW peak pulse capability (8.3 ms); no AEC-Q101 qualification | Used in industrial/commercial designs where automotive qualification is not required | Select SMAJ30A if AEC-Q101 is unnecessary and higher single-pulse energy margin is preferred |
| TPSMA30AHM3/5AT | Identical electrical specs and AEC-Q101 qualification; differs only in halogen-free molding compound (HM3 suffix vs. HE3) | Required for RoHS-compliant, halogen-free BOMs in EU automotive programs | Choose TPSMA30AHM3/5AT when halogen-free material compliance is mandated by OEM specification |
Compared with SMAJ30A and TPSMA30AHM3/5AT, the TPSMA30AHE3/5AT provides identical clamping performance and automotive qualification but uses standard RoHS-compliant (non-halogen-free) epoxy - making it optimal for cost-sensitive AEC-Q101 designs where halogen-free status is not enforced.
Availability
TPSMA30AHE3/5AT is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor interfaces, and telecom power input stages requiring stable component supply, AEC-Q101 qualification, and consistent 400 W surge immunity.
Supply support for TPSMA30AHE3/5AT 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, high-temperature, and automotive-grade solutions.
The TPSMA series belongs to Vishay's PAR® (Protected Anisotropic Rectifier) transient voltage suppressor family, engineered specifically for robust, high-temperature-stable clamping in harsh automotive and industrial environments.
FAQ
What is the breakdown voltage tolerance for TPSMA30AHE3/5AT?
The TPSMA30AHE3/5AT has a specified breakdown voltage (VBR) range of 28.5 V to 31.5 V at 1.0 mA test current, representing ±5 % tolerance around the nominal 30 V value. This tight tolerance ensures predictable clamping behavior in precision protection circuits and aligns with AEC-Q101 requirements for automotive applications.
Is TPSMA30AHE3/5AT suitable for bidirectional transient protection?
No, TPSMA30AHE3/5AT is unidirectional only, as confirmed in the Vishay datasheet. It protects against reverse-polarity transients only - forward conduction occurs above ~3.5 V (VF at 25 A). For bidirectional protection, a pair of TPSMA30AHE3/5AT devices in series-opposed configuration or a dedicated bidirectional TVS like SMAJ30CA must be used.
What does the "HE3" suffix indicate in TPSMA30AHE3/5AT?
The "HE3" suffix denotes RoHS-compliant construction and AEC-Q101 qualification per Vishay's ordering nomenclature. It confirms the device meets automotive reliability standards including temperature cycling, highly accelerated life testing (HALT), and electrostatic discharge (ESD) requirements - essential for under-hood and safety-critical vehicle subsystems.
What is the maximum clamping voltage of TPSMA30AHE3/5AT under surge conditions?
The TPSMA30AHE3/5AT exhibits a maximum clamping voltage (VC) of 41.4 V when subjected to its rated 9.7 A peak pulse current (IPPM) under the standard 10/1000 µs waveform. This value is measured at the device terminals and defines the upper voltage limit imposed on protected circuitry during transient events.
Does TPSMA30AHE3/5AT require derating at elevated ambient temperatures?
Yes, TPSMA30AHE3/5AT must be derated above 25 °C ambient temperature, as shown in Figure 2 of the Vishay datasheet. Its peak pulse power capability decreases linearly with rising junction temperature - for example, at 125 °C initial junction temperature, PPPM drops to approximately 200 W, requiring careful thermal layout and power budgeting in high-temperature applications.
TPSMA30AHE3/5AT 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):
- 25.6V
- Voltage - Breakdown (Min):
- 28.5V
- Voltage - Clamping (Max) @ Ipp:
- 41.4V
- Current - Peak Pulse (10/1000µs):
- 9.7A
- 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)
TPSMA30AHE3/5AT FAQ
1.How can I place an order for TPSMA30AHE3/5AT through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMA30AHE3/5AT 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 TPSMA30AHE3/5AT reliable?
The price and inventory of TPSMA30AHE3/5AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPSMA30AHE3/5AT is usually 5 days.
3.What payment methods are accepted for TPSMA30AHE3/5AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMA30AHE3/5AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMA30AHE3/5AT?
TPSMA30AHE3/5AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMA30AHE3/5AT 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 TPSMA30AHE3/5AT?
For technical support, including TPSMA30AHE3/5AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMA30AHE3/5AT requirements.
6.How does Aetrix verify that TPSMA30AHE3/5AT is sourced from the original manufacturer or authorized distributors?
All TPSMA30AHE3/5AT 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 TPSMA30AHE3/5AT meets industry standards.
7.What is the process for return or replacement of TPSMA30AHE3/5AT?
All TPSMA30AHE3/5AT units undergo pre-shipment inspection (PSI). If there is an issue with TPSMA30AHE3/5AT, 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 TPSMA30AHE3/5AT part is unused and in its original packaging.
Return procedure for TPSMA30AHE3/5AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPSMA30AHE3/5AT Tags
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