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Vishay General Semiconductor - Diodes Division TPSMA36AHE3_A/I
- Part No.:
- TPSMA36AHE3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
TPSMA36AHE3_A/I.pdf
- Description:
- TVS DIODE 30.8VWM 49.9VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:4,167
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Product details
Overview
TPSMA36AHE3_A/I 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 nominal 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 supply input stages.
For engineers reviewing the TPSMA36AHE3_A/I datasheet, TPSMA36AHE3_A/I pinout, TPSMA36AHE3_A/I application, or TPSMA36AHE3_A/I equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification status, TJ = 185 °C capability, 30.8 V stand-off voltage (VWM), and low incremental surge resistance for robust ESD and lightning surge immunity in high-reliability designs.
Technical Context
This TVS diode employs passivated anisotropic rectifier technology with junction passivation optimized for high-temperature stability. Its unidirectional structure provides forward conduction only during overvoltage events, enabling precise clamping without interfering with normal DC bias paths in power rails or signal lines.
Rated for 400 W peak pulse power under 10/1000 µs waveform with 0.01 % duty cycle, it delivers fast response time and low dynamic impedance to limit transient energy delivered to downstream ICs. The device meets MSL Level 1 per J-STD-020 and supports lead-free reflow up to 260 °C peak temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 34.2 V / 36.0 V / 37.8 V - ensures reliable triggering above system operating voltage while maintaining margin against false clamping |
| VWM | 30.8 V - maximum continuous reverse working voltage compatible with 24 V nominal systems with safety margin |
| VC @ IPPM | 49.9 V - clamping voltage at 8.0 A limits stress on protected MOSFETs or microcontrollers during surge events |
| PPPM | 400 W - peak pulse power rating defines transient energy absorption capacity under standardized 10/1000 µs waveform |
| TJ max. | +185 °C - enables operation in under-hood automotive environments and high-power industrial enclosures |
| Polarity | Unidirectional - allows integration into DC-biased lines without reverse leakage concerns during normal operation |
| AEC-Q101 | Qualified - confirms reliability validation for automotive electronics per stress test requirements |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, cathode indicated by color band. Molded compound meets UL 94 V-0; matte tin-plated leads compliant with J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Anode of internal Zener-like junction | Connected to higher-potential side of protected line; conducts when transient exceeds VBR |
| Anode | Cathode of internal Zener-like junction | Connected to ground or lower-potential reference; completes clamping path during overvoltage |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation optimized design | Enables stable VBR performance across temperature and lifetime, critical for automotive-grade reliability |
| 400 W peak pulse power (10/1000 µs) | Supports IEC 61000-4-5 Level 4 surge immunity (4 kV line-to-earth) in properly designed PCB layouts |
| TJ = 185 °C capability | Permits use in engine control units and motor drive inverters where ambient temperatures exceed 125 °C |
| AEC-Q101 qualified (HE3 suffix) | Validates qualification for automotive applications including passenger cabin sensors and body control modules |
| MSL Level 1, 260 °C peak reflow | Allows single-pass lead-free assembly without moisture sensitivity concerns or pre-bake requirements |
Applications
| Automotive Sensor Protection | Industrial Power Supply Input |
|---|---|
Use Scenario: Protecting CAN bus transceivers and analog sensor front-ends (e.g., pressure, temperature) from load dump and ISO 7637-2 pulses in vehicle ECUs. IC Role / Device Role / Timing Role: Transient voltage suppressor placed between sensor signal line and ground, clamping spikes within nanoseconds. Use Value: Maintains VWM = 30.8 V compatibility with 24 V systems while limiting VC to 49.9 V to prevent damage to 5 V or 3.3 V interface ICs. | Use Scenario: Safeguarding AC-DC converter primary-side controllers and secondary-side feedback circuits against lightning-induced surges on 24 V DC distribution rails. IC Role / Device Role / Timing Role: Unidirectional TVS connected across input capacitor terminals to absorb repetitive 400 W transients without thermal runaway. Use Value: Leverages 185 °C junction rating to sustain operation in sealed industrial enclosures with limited airflow and high ambient temperatures. |
| Telecom Line Interface | Consumer Appliance Motor Control |
Use Scenario: Shielding Ethernet PHY interfaces and RS-485 transceivers in outdoor telecom equipment exposed to induced lightning surges. IC Role / Device Role / Timing Role: Clamping device installed at board edge, shunting transient energy before it reaches communication ICs. Use Value: Achieves fast response and low clamping voltage (49.9 V) to preserve signal integrity on differential data lines operating up to ±12 V. | Use Scenario: Suppressing inductive kickback from brushed DC motors in smart home appliances (e.g., vacuum cleaners, washing machines). IC Role / Device Role / Timing Role: Mounted across motor terminals or H-bridge outputs to clamp flyback voltage during PWM switching transitions. Use Value: Withstands 40 A peak forward surge current (IFSM) and maintains stable clamping under repeated commutation stress. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient 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 thermal mass | Higher power handling suits larger PCB footprints; less suitable for ultra-dense automotive modules | Select SMBJ36A when higher surge margin is required and board space permits larger footprint |
| TPSMA36CAHE3_A/I | Bi-directional variant of same family; identical VBR, VC, and package; adds symmetric clamping for AC-coupled lines | Required for differential signal lines or AC inputs where reverse polarity transients occur | Choose TPSMA36CAHE3_A/I only if bidirectional protection is mandated by signal topology |
Compared with SMBJ36A and TPSMA36CAHE3_A/I, the TPSMA36AHE3_A/I offers optimal balance of compact SMA footprint, AEC-Q101 qualification, and precise unidirectional clamping - making it ideal for space-constrained 24 V automotive and industrial DC rail protection where polarity is fixed.
Availability
TPSMA36AHE3_A/I is available at Aetrix Electronics and suitable for automotive sensor protection, industrial power supply input stages, telecom line interface circuits, and consumer appliance motor control requiring stable component supply and long-term lifecycle support.
Supply support for TPSMA36AHE3_A/I 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 TPSMA36AHE3_A/I belongs to Vishay's PAR® series of surface-mount transient voltage suppressors, engineered specifically for high-reliability protection in automotive, industrial, and telecom environments where sustained operation at +185 °C and AEC-Q101 compliance are mandatory.
FAQ
What is the breakdown voltage tolerance for TPSMA36AHE3_A/I?
The TPSMA36AHE3_A/I has a specified breakdown voltage range of 34.2 V (minimum) to 37.8 V (maximum) at 1.0 mA test current, with 36.0 V nominal. This ±5 % tolerance ensures consistent clamping behavior across production lots and supports robust design margins in 24 V systems where VWM = 30.8 V provides adequate headroom.
Is TPSMA36AHE3_A/I suitable for automotive applications?
Yes, TPSMA36AHE3_A/I is AEC-Q101 qualified and rated for TJ = 185 °C, making it suitable for automotive applications including engine control units, body electronics, and ADAS sensor modules. Its HE3 suffix denotes RoHS-compliant, AEC-Q101 qualified construction, validated for high-temperature reliability and mechanical shock resistance per automotive standards.
What is the maximum clamping voltage of TPSMA36AHE3_A/I at rated surge current?
The maximum clamping voltage (VC) of TPSMA36AHE3_A/I is 49.9 V at 8.0 A peak pulse current (IPPM) under 10/1000 µs waveform conditions. This value defines the upper voltage limit imposed on protected circuitry during transient events and is critical for ensuring downstream ICs remain within absolute maximum ratings.
Does TPSMA36AHE3_A/I have unidirectional or bidirectional polarity?
TPSMA36AHE3_A/I is a unidirectional TVS diode, meaning it clamps only in reverse bias and conducts forward current like a standard diode. Its polarity is marked by a cathode band; it must be oriented with cathode toward the higher-potential side of the protected line. Bidirectional variants (e.g., TPSMA36CAHE3_A/I) exist but are distinct part numbers.
What package type does TPSMA36AHE3_A/I use and what are its mounting requirements?
TPSMA36AHE3_A/I uses the SMA (DO-214AC) surface-mount package. Mounting requires 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal for thermal and surge current handling, per Vishay's recommended pad layout. It meets MSL Level 1 and supports lead-free reflow up to 260 °C peak temperature without preconditioning.
TPSMA36AHE3_A/I 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):
- 30.8V
- Voltage - Breakdown (Min):
- 34.2V
- Voltage - Clamping (Max) @ Ipp:
- 49.9V
- Current - Peak Pulse (10/1000µs):
- 8A
- 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)
TPSMA36AHE3_A/I FAQ
1.How can I place an order for TPSMA36AHE3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMA36AHE3_A/I 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 TPSMA36AHE3_A/I reliable?
The price and inventory of TPSMA36AHE3_A/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPSMA36AHE3_A/I is usually 5 days.
3.What payment methods are accepted for TPSMA36AHE3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMA36AHE3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMA36AHE3_A/I?
TPSMA36AHE3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMA36AHE3_A/I 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 TPSMA36AHE3_A/I?
For technical support, including TPSMA36AHE3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMA36AHE3_A/I requirements.
6.How does Aetrix verify that TPSMA36AHE3_A/I is sourced from the original manufacturer or authorized distributors?
All TPSMA36AHE3_A/I 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 TPSMA36AHE3_A/I meets industry standards.
7.What is the process for return or replacement of TPSMA36AHE3_A/I?
All TPSMA36AHE3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with TPSMA36AHE3_A/I, 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 TPSMA36AHE3_A/I part is unused and in its original packaging.
Return procedure for TPSMA36AHE3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPSMA36AHE3_A/I Tags
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