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Vishay General Semiconductor - Diodes Division TPSMA36HE3/5AT
- Part No.:
- TPSMA36HE3/5AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
TPSMA36HE3/5AT.pdf
- Description:
- TVS DIODE 29.1VWM 52VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:2,489
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Product details
Overview
TPSMA36HE3/5AT 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 36.0 V breakdown voltage (VBR), 49.9 V maximum clamping voltage (VC) at 8.0 A peak pulse current, 400 W peak pulse power (10/1000 µs), 1.0 W steady-state power dissipation, and operates up to +185 °C junction temperature - used in automotive sensor protection and industrial power rail surge suppression.
For engineers reviewing the TPSMA36HE3/5AT datasheet, TPSMA36HE3/5AT pinout, TPSMA36HE3/5AT application, or TPSMA36HE3/5AT equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification status, clamping performance under 10/1000 µs surges, thermal derating above 25 °C, and compatibility with standard SMA PCB footprints.
Technical Context
This TVS diode employs passivated anisotropic rectifier technology to deliver stable breakdown behavior and low incremental surge resistance. Its junction design supports operation up to 185 °C and meets MSL Level 1 per J-STD-020 with 260 °C reflow peak tolerance.
The device responds within picoseconds to transient overvoltages and clamps reliably across its specified 30.8 V stand-off voltage (VWM) and 36.0–37.8 V breakdown range. It is rated for repetitive 400 W pulses at 0.01 % duty cycle and handles 40 A non-repetitive forward surge (8.3 ms half-sine).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 34.2 V / 36.0 V / 37.8 V - defines precise voltage threshold at which avalanche conduction begins under 1 mA test current |
| VWM | 30.8 V - maximum continuous reverse operating voltage before leakage exceeds 1 µA at 25 °C |
| VC @ IPPM | 49.9 V at 8.0 A - clamped voltage during 10/1000 µs surge, limiting downstream IC stress |
| PPPM | 400 W - peak transient power handling capability with defined waveform and derating curve |
| TJ max. | +185 °C - enables use in under-hood automotive and high-temperature industrial environments |
| Polarity | Unidirectional - protects against positive-going transients only; cathode band denotes terminal orientation |
| Package | SMA (DO-214AC) - industry-standard surface-mount outline with 0.208" x 0.157" footprint and matte tin-plated leads |
Pinout & Package
SMA (DO-214AC) package with axial lead configuration: two terminals - cathode (marked by color band) and anode. Mounting requires 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal for rated power dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink | Connected to protected line; conducts avalanche current to ground during overvoltage events |
| Anode | Reference/return path | Typically tied to system ground or low-impedance return plane to complete clamping loop |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per JEDEC standards |
| 185 °C junction rating | Enables deployment in engine control units, ADAS sensors, and other high-ambient-temperature locations |
| 400 W peak pulse power (10/1000 µs) | Provides robust protection against ISO 7637-2 pulse 1, 2a, 3a/b and IEC 61000-4-5 surge events |
| Low clamping ratio (VC/VBR ≈ 1.39) | Minimizes overvoltage stress on downstream MOSFETs, MCUs, and analog front-ends during clamping |
| MSL Level 1, 260 °C peak reflow | Supports standard SMT assembly without moisture sensitivity concerns or baking requirements |
Applications
| Automotive Sensor Protection | Industrial Power Rail Clamping |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and position sensors in engine compartments exposed to load dump and inductive switching. IC Role / Device Role / Timing Role: Transient voltage suppressor placed between signal line and ground to clamp fast-rising spikes before they reach sensitive input circuitry. Use Value: Maintains signal integrity under ISO 7637-2 Pulse 5a (load dump) with VC ≤ 49.9 V, preventing latch-up or permanent damage to 3.3 V/5 V interface ICs. | Use Scenario: Safeguarding 24 V DC input rails of PLC modules and motor drives against lightning-induced surges and relay contact bounce. IC Role / Device Role / Timing Role: Standoff protector on main supply line, activated only during >30.8 V transients to shunt energy away from DC-DC converters and microcontrollers. Use Value: Withstands 40 A surge (8.3 ms) and delivers 400 W pulse handling without degradation, ensuring long-term reliability in factory automation systems. |
| Consumer Power Adapter Input | Telecom Line Interface Protection |
Use Scenario: Secondary-side overvoltage suppression in AC/DC adapters powering USB-C PD controllers and display interfaces. IC Role / Device Role / Timing Role: Fast-response clamping diode placed after rectification but before primary regulation stage to absorb residual transients. Use Value: Low 1.0 µA leakage at 30.8 V ensures minimal standby power loss, while 49.9 V clamping prevents overvoltage failure of synchronous rectifier MOSFETs. | Use Scenario: Surge protection on Ethernet PHY power pins and auxiliary bias lines in VoIP gateways and base station management circuits. IC Role / Device Role / Timing Role: Unidirectional TVS connected between isolated DC bias rail and chassis ground to suppress common-mode surges. Use Value: AEC-Q101 qualification and 185 °C rating allow use in sealed telecom enclosures where ambient temperatures exceed 85 °C during extended 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 |
|---|---|---|---|
| SMBJ36A | Same VBR range (34.2–37.8 V), but SMB package (DO-214AA); 600 W PPPM, higher IPPM (13.3 A), larger footprint | Higher power handling suits 48 V systems; less suitable for space-constrained automotive modules | Select when higher surge margin is required and board area permits larger SMB outline |
| TPSMA36AHE3_T52R | Identical electrical specs and SMA package; differs only in tape-and-reel packaging (7" vs. 13" reel, different carrier tape pitch) | No functional or application difference; identical performance and mounting | Choose based on production line feeder compatibility and volume order requirements |
Compared with SMBJ36A and TPSMA36AHE3_T52R, the TPSMA36HE3/5AT offers optimized balance of AEC-Q101 compliance, compact SMA footprint, and verified 400 W surge capability - making it preferred for automotive body electronics and space-limited industrial designs where consistent 13" reel delivery is required.
Availability
TPSMA36HE3/5AT is available at Aetrix Electronics and suitable for automotive sensor protection, industrial power rail clamping, and telecom line interface protection requiring stable component supply and full traceability.
Supply support for TPSMA36HE3/5AT 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 reliability and high-temperature performance.
The TPSMA36HE3/5AT belongs to Vishay's PAR® series of surface-mount TVS diodes, engineered specifically for automotive and industrial environments demanding AEC-Q101 qualification, 185 °C operation, and repeatable clamping under harsh surge conditions.
FAQ
What is the breakdown voltage tolerance of the TPSMA36HE3/5AT?
The TPSMA36HE3/5AT has a guaranteed breakdown voltage (VBR) range of 34.2 V to 37.8 V at 1.0 mA test current, with a nominal value of 36.0 V. This ±5 % tolerance ensures predictable clamping onset across production lots and temperature extremes, supporting robust design margins in automotive and industrial applications where precise overvoltage thresholds are critical.
Is the TPSMA36HE3/5AT RoHS-compliant and halogen-free?
Yes, the TPSMA36HE3/5AT carries the HE3 suffix, indicating it is RoHS-compliant and AEC-Q101 qualified. However, it is not halogen-free; for halogen-free compliance, the HM3 suffix variant (e.g., TPSMA36AHM3/5AT) must be selected. Both variants meet JESD201 Class 2 whisker resistance and UL 94 V-0 flammability requirements.
What is the maximum clamping voltage of the TPSMA36HE3/5AT under surge conditions?
The TPSMA36HE3/5AT exhibits a maximum clamping voltage (VC) of 49.9 V when subjected to an 8.0 A peak pulse current with a 10/1000 µs waveform. This value is measured per standard test conditions and defines the upper voltage limit imposed on protected circuitry during transient events - essential for verifying safe operation of downstream 36 V-rated components.
Does the TPSMA36HE3/5AT require derating at elevated ambient temperatures?
Yes, the TPSMA36HE3/5AT must be derated above 25 °C ambient per Figure 2 in Vishay document 88405. Its peak pulse power decreases linearly to ~50 % at 125 °C and reaches zero at 185 °C junction temperature. Designers must calculate actual junction temperature using thermal resistance and power dissipation to ensure safe operation in high-temperature environments like engine bays.
Can the TPSMA36HE3/5AT be used in bidirectional protection configurations?
No, the TPSMA36HE3/5AT is unidirectional only, with cathode marked by a band and intended for positive-going transient suppression. For bidirectional protection, two devices in series opposition or a dedicated bidirectional TVS (e.g., TPSMA36CA) would be required. Using this part in reverse-biased configuration risks premature breakdown or failure due to lack of symmetric avalanche characteristics.
TPSMA36HE3/5AT 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):
- 29.1V
- Voltage - Breakdown (Min):
- 32.4V
- Voltage - Clamping (Max) @ Ipp:
- 52V
- Current - Peak Pulse (10/1000µs):
- 7.7A
- 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)
TPSMA36HE3/5AT FAQ
1.How can I place an order for TPSMA36HE3/5AT through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMA36HE3/5AT 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 TPSMA36HE3/5AT reliable?
The price and inventory of TPSMA36HE3/5AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPSMA36HE3/5AT is usually 5 days.
3.What payment methods are accepted for TPSMA36HE3/5AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMA36HE3/5AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMA36HE3/5AT?
TPSMA36HE3/5AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMA36HE3/5AT 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 TPSMA36HE3/5AT?
For technical support, including TPSMA36HE3/5AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMA36HE3/5AT requirements.
6.How does Aetrix verify that TPSMA36HE3/5AT is sourced from the original manufacturer or authorized distributors?
All TPSMA36HE3/5AT 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 TPSMA36HE3/5AT meets industry standards.
7.What is the process for return or replacement of TPSMA36HE3/5AT?
All TPSMA36HE3/5AT units undergo pre-shipment inspection (PSI). If there is an issue with TPSMA36HE3/5AT, 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 TPSMA36HE3/5AT part is unused and in its original packaging.
Return procedure for TPSMA36HE3/5AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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