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Vishay General Semiconductor - Diodes Division TPSMA30HE3/5AT
- Part No.:
- TPSMA30HE3/5AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
TPSMA30HE3/5AT.pdf
- Description:
- TVS DIODE 24.3VWM 43.5VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:6,397
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Product details
Overview
TPSMA30HE3/5AT from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMA (DO-214AC) package, rated for 30 V breakdown voltage (VBR = 28.5–31.5 V), 400 W peak pulse power (10/1000 µs), and 185 °C maximum junction temperature - deployed for clamping inductive switching transients on automotive sensor signal lines and MOSFET gate protection.
For engineers reviewing the TPSMA30HE3/5AT datasheet, TPSMA30HE3/5AT pinout, TPSMA30HE3/5AT application, or TPSMA30HE3/5AT equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification, 41.4 V clamping voltage at 9.7 A surge current, and MSL Level 1 reflow compatibility up to 260 °C.
Technical Context
This TVS diode operates as a voltage-clamping protection device in parallel with sensitive circuit nodes. Its passivated anisotropic rectifier structure enables fast response time (<1 ns), low incremental surge resistance, and stable clamping under repetitive 10/1000 µs transients at ≤0.01% duty cycle.
Designed for high-reliability environments, the TPSMA30HE3/5AT supports continuous operation from –65 °C to +185 °C junction temperature and meets JESD201 Class 2 whisker resistance. It is RoHS-compliant, halogen-free (HE3 suffix), and qualified per AEC-Q101 for automotive use.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 28.5 / 30.0 / 31.5 V - ensures reliable triggering above 25.6 V stand-off voltage while avoiding false trips during normal operation |
| VC @ IPPM | 41.4 V - clamps 10/1000 µs surges up to 9.7 A without exceeding safe voltage for downstream ICs |
| PPPM | 400 W - sustains high-energy transients common in automotive load-dump and inductive switch-off events |
| IFSM | 40 A - withstands 8.3 ms half-sine surge currents typical of motor driver fault conditions |
| TJ max | +185 °C - enables placement near hot components (e.g., power MOSFETs, engine control units) without derating |
| Package | SMA (DO-214AC) - industry-standard SMD footprint with 0.2" × 0.2" copper pad thermal requirement for 1.0 W steady-state dissipation |
Pinout & Package
SMA (DO-214AC) surface-mount package with molded epoxy body, matte tin-plated leads, and cathode band marking. Dimensions: 4.93 mm × 3.99 mm × 2.29 mm (L × W × H); compliant with UL 94 V-0 flammability rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink node | Connected to protected line; conducts surge current to ground when VLINE exceeds VBR |
| Anode | Reference/ground return path | Typically tied to system ground plane; completes clamping path during overvoltage events |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation | Optimized anisotropic rectifier process ensures stable VBR drift < ±5% over 1000 hrs at 150 °C |
| AEC-Q101 qualification | Validated for automotive-grade reliability including HTGB, TCT, and ESD HBM ≥8 kV |
| MSL Level 1 | Reflow-compatible up to 260 °C peak without moisture-induced popcorning or delamination |
| Low clamping ratio | VC/VBR ≈ 1.38 - minimizes overvoltage stress on protected ICs compared to higher-ratio TVS devices |
Applications
| Automotive Sensor Protection | Industrial Motor Drive Gate Clamp |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor outputs (e.g., pressure, temperature) from ISO 7637-2 pulse 1/2a/5a transients in engine compartments. IC Role / Device Role / Timing Role: Parallel-connected voltage clamp that activates within nanoseconds to limit line voltage to ≤41.4 V during 100 V/500 ms load dump events. Use Value: Prevents latch-up or permanent damage to 3.3 V/5 V interface ICs while maintaining signal integrity during normal operation below 25.6 V. | Use Scenario: Suppressing Miller-induced voltage spikes across high-side N-channel MOSFET gates during fast switching in 24 V industrial PLC output stages. IC Role / Device Role / Timing Role: Fast-acting shunt element placed between gate and source to clamp dv/dt-induced overshoot before it exceeds gate oxide breakdown threshold. Use Value: Enables reliable 100 kHz+ PWM operation without gate driver desaturation or MOSFET failure, leveraging 9.7 A surge capability and 1.0 ns response. |
| Telecom Line Interface Surge Suppression | Computer Power Rail Transient Clamping |
Use Scenario: Safeguarding Ethernet PHY front-end circuits (e.g., RJ45 magnetics secondary side) against lightning-induced surges per IEC 61000-4-5 (4 kV/2 Ω) IC Role / Device Role / Timing Role: Primary-level TVS placed upstream of ESD diodes to absorb bulk energy before secondary protection engages. Use Value: Reduces thermal stress on downstream ESD arrays by diverting >90% of 400 W surge energy, validated via 10/1000 µs waveform testing. | Use Scenario: Clamping voltage overshoot on 12 V DC-DC converter output rails caused by hot-plug insertion or sudden load removal in server backplanes. IC Role / Device Role / Timing Role: Standoff-rated protector operating at 25.6 V VWM, activated only during >28.5 V excursions to avoid interference with regulation loop stability. Use Value: Maintains clean 12 V rail during dynamic load steps while preventing brownout or reset events triggered by transient undershoot from excessive clamping. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ30A | Same VBR range (28.5–31.5 V), but SMB package (DO-214AA); 600 W PPPM; higher thermal mass | Requires larger PCB footprint; better suited for non-automotive industrial designs with less space constraint | Select when higher single-pulse energy handling is needed and board area permits SMB outline |
| TPSMA30AHM3/5AT | Identical electrical specs and SMA package; HM3 suffix denotes halogen-free + AEC-Q101 + RoHS - no functional difference vs. HE3 | No application difference; identical automotive qualification and reliability performance | Choose HM3 if halogen-free compliance is mandated by OEM material declaration requirements |
Compared with SMBJ30A and TPSMA30AHM3/5AT, the TPSMA30HE3/5AT offers optimal balance of AEC-Q101 qualification, compact SMA footprint, and verified 185 °C operation - making it preferred for space-constrained automotive modules where HE3's RoHS+AEC-Q101 suffices and halogen-free is not required.
Availability
TPSMA30HE3/5AT is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial motor drive gate protection, and telecom line interface surge suppression requiring stable component supply across production lifecycles.
Supply support for TPSMA30HE3/5AT 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 and high-temperature performance.
The TPSMA30HE3/5AT belongs to Vishay's PAR® (Protection Against Transients) family - engineered specifically for robust, high-temperature transient suppression in automotive, industrial, and telecom infrastructure where AEC-Q101 qualification and 185 °C operation are mandatory.
FAQ
What is the clamping voltage of the TPSMA30HE3/5AT at its rated peak pulse current?
The TPSMA30HE3/5AT has a maximum clamping voltage (VC) of 41.4 V when subjected to its rated peak pulse current (IPPM) of 9.7 A under the standard 10/1000 µs waveform. This value is measured per JEDEC test conditions and ensures protected circuits remain within safe operating limits during transient events. The TPSMA30HE3/5AT achieves this with low incremental surge resistance, directly supporting robust interface protection in automotive and industrial systems.
Is the TPSMA30HE3/5AT qualified for automotive applications?
Yes, the TPSMA30HE3/5AT is AEC-Q101 qualified and explicitly designated for automotive use with the "HE3" suffix. It meets stress tests including high-temperature reverse bias, temperature cycling, and unbiased highly accelerated stress testing. The TPSMA30HE3/5AT is rated for continuous operation up to +185 °C junction temperature and supports under-hood and transmission-control module deployments where thermal resilience is critical.
What does the "HE3" suffix mean in TPSMA30HE3/5AT?
The "HE3" suffix in TPSMA30HE3/5AT indicates RoHS-compliant construction and AEC-Q101 qualification. It also confirms compliance with JESD201 Class 2 whisker resistance and MSL Level 1 moisture sensitivity. The "5AT" denotes tape-and-reel packaging in 7-inch reels with 1800 units per reel - a standard logistics configuration for automated SMT assembly. The TPSMA30HE3/5AT is not halogen-free; for that specification, the HM3 variant is used.
How does the TPSMA30HE3/5AT compare to bidirectional TVS diodes in surge protection?
The TPSMA30HE3/5AT is unidirectional and optimized for DC-biased lines such as automotive sensor supplies or MOSFET gate drives, where reverse conduction must be blocked during normal operation. Unlike bidirectional TVS diodes, it provides lower leakage (<1 µA at 25.6 V) and tighter VBR tolerance. The TPSMA30HE3/5AT avoids unnecessary conduction during negative transients in grounded systems - enhancing efficiency and reducing thermal load in asymmetric voltage environments.
What is the recommended PCB layout for optimal thermal and electrical performance of the TPSMA30HE3/5AT?
Vishay specifies minimum 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal for the TPSMA30HE3/5AT to achieve full 1.0 W power dissipation and 400 W pulse handling. Thermal vias under pads are recommended for high-reliability automotive layouts. Keep traces short and symmetric to minimize inductance, especially in high-di/dt paths like motor gate clamping. The TPSMA30HE3/5AT must be placed as close as possible to the protected node - within 5 mm - to prevent impedance-related voltage overshoot during nanosecond-scale transients.
TPSMA30HE3/5AT 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):
- 24.3V
- Voltage - Breakdown (Min):
- 27V
- Voltage - Clamping (Max) @ Ipp:
- 43.5V
- Current - Peak Pulse (10/1000µs):
- 9.2A
- 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)
TPSMA30HE3/5AT FAQ
1.How can I place an order for TPSMA30HE3/5AT through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMA30HE3/5AT 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 TPSMA30HE3/5AT reliable?
The price and inventory of TPSMA30HE3/5AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPSMA30HE3/5AT is usually 5 days.
3.What payment methods are accepted for TPSMA30HE3/5AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMA30HE3/5AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMA30HE3/5AT?
TPSMA30HE3/5AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMA30HE3/5AT 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 TPSMA30HE3/5AT?
For technical support, including TPSMA30HE3/5AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMA30HE3/5AT requirements.
6.How does Aetrix verify that TPSMA30HE3/5AT is sourced from the original manufacturer or authorized distributors?
All TPSMA30HE3/5AT 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 TPSMA30HE3/5AT meets industry standards.
7.What is the process for return or replacement of TPSMA30HE3/5AT?
All TPSMA30HE3/5AT units undergo pre-shipment inspection (PSI). If there is an issue with TPSMA30HE3/5AT, 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 TPSMA30HE3/5AT part is unused and in its original packaging.
Return procedure for TPSMA30HE3/5AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPSMA30HE3/5AT Tags
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