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Vishay General Semiconductor - Diodes Division TPSMA33HE3_A/I
- Part No.:
- TPSMA33HE3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
TPSMA33HE3_A/I.pdf
- Description:
- TVS DIODE 26.8VWM 47VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:2,568
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Product details
Overview
TPSMA33HE3_A/I from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor (TVS) in SMA (DO-214AC) package, designed to protect sensitive electronics against voltage transients induced by inductive load switching and lightning. It features a 33 V nominal breakdown voltage (VBR = 31.4–34.7 V), 400 W peak pulse power (10/1000 µs), 45.7 V maximum clamping voltage at 8.8 A surge current, and operates up to +185 °C junction temperature.
For engineers reviewing the TPSMA33HE3_A/I datasheet, TPSMA33HE3_A/I pinout, TPSMA33HE3_A/I application, or TPSMA33HE3_A/I equivalent, this page provides verified electrical parameters, AEC-Q101 qualification status, thermal derating curves, clamping performance under standardized surge waveforms, and real-world protection use cases for automotive and industrial signal-line circuits.
Technical Context
The TPSMA33HE3_A/I employs passivated anisotropic rectifier technology optimized for high-temperature stability and low incremental surge resistance. Its unidirectional polarity enables robust forward-biased clamping during positive transients while maintaining low leakage (<1 µA at 28.2 V) at rated standoff voltage.
It delivers repeatable 400 W surge suppression per JEDEC-standard 10/1000 µs waveform with 0.01% duty cycle, and supports mounting on 5.0 mm × 5.0 mm copper pads for optimal thermal dissipation. The device meets MSL Level 1 (260 °C reflow peak) and is AEC-Q101 qualified for automotive-grade reliability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 31.4 / 33.0 / 34.7 V - ensures reliable conduction onset above system operating voltage while avoiding false triggering |
| VWM | 28.2 V - maximum continuous reverse working voltage compatible with 24 V automotive systems |
| VC @ IPPM | 45.7 V - clamps 8.8 A surge current to safe levels for downstream ICs and MOSFETs |
| PPPM | 400 W - handles standard ISO 7637-2 and IEC 61000-4-5 surge events without degradation |
| TJ max | +185 °C - enables operation in under-hood automotive environments and high-power industrial enclosures |
| IR @ VWM | <1 µA - minimizes standby power loss and avoids interference with high-impedance sensor inputs |
| Package | SMA (DO-214AC) - industry-standard SMD footprint with cathode band marking and RoHS-compliant matte tin plating |
Pinout & Package
SMA (DO-214AC) surface-mount package with axial lead configuration: two terminals-cathode (marked with color band) and anode. Molded compound meets UL 94 V-0 flammability rating; terminals are solderable per J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink | Connects to protected line; conducts surge current to ground when VBR exceeded |
| Anode | Reference/return path | Typically tied to system ground; completes clamping loop during overvoltage events |
Key Features
| Feature | Design Value |
|---|---|
| Passivated anisotropic rectifier technology | Enables stable VBR drift <0.089 %/°C and consistent clamping across temperature |
| AEC-Q101 qualification (HE3 suffix) | Validated for automotive applications including engine control units and body electronics |
| 400 W peak pulse power (10/1000 µs) | Withstands repetitive ISO 7637-2 Pulse 1, 2a, and 5a transients without parameter shift |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and single-reflow processing at 260 °C peak |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients (e.g., ESD, relay bounce) |
Applications
| Automotive Power Line Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting LIN bus and 12 V/24 V power rails in vehicle ECUs from load dump and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed between power rail and chassis ground to clamp transients before reaching MCU or CAN transceivers. Use Value: Clamps 45.7 V at 8.8 A surge, limiting stress on 36 V-rated input stages and enabling compliance with ISO 16750-2. | Use Scenario: Shielding analog output lines of pressure/temperature sensors in factory automation PLC modules. IC Role / Device Role / Timing Role: Transient suppressor mounted at connector entry point to absorb ESD and inductive kickback from solenoid drivers. Use Value: Sub-1 µA leakage at 28.2 V preserves signal integrity in 4–20 mA loops; 185 °C rating supports operation near motor drives. |
| Telecom DC Power Input Protection | Consumer Device USB Port Surge Suppression |
Use Scenario: Safeguarding 48 V PoE-powered equipment (e.g., IP cameras, access points) against lightning-induced surges on DC input lines. IC Role / Device Role / Timing Role: Primary clamping device in series with DC-DC converter input, coordinated with upstream fuse and common-mode choke. Use Value: 400 W rating handles IEC 61000-4-5 Level 4 (4 kV) surges; DO-214AC footprint allows compact layout near board edge. | Use Scenario: Adding secondary-level surge protection to USB 2.0 data lines and VBUS in smart home hubs and docking stations. IC Role / Device Role / Timing Role: Low-capacitance TVS pair (used differentially) suppressing ESD and cable discharge events on D+/D− lines. Use Value: While TPSMA33HE3_A/I is unidirectional, its 45.7 V clamping and fast response support hybrid protection schemes where VBUS clamping is prioritized over signal-line speed. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ33A | Same VBR range (31.4–34.7 V), higher PPPM = 600 W, larger SMB (DO-214AA) package | Better suited for higher-energy transients; requires larger PCB area and different pad layout | Select SMBJ33A when surge energy exceeds 400 W or when thermal margin must be increased beyond SMA limits |
| SMCJ33A | Same VBR, PPPM = 1500 W, SMC (DO-214AB) package, 2× footprint area of SMA | Used in heavy-duty industrial power supplies and railway electronics requiring extended surge endurance | Choose SMCJ33A only if design accommodates larger footprint and needs >1000 W pulse handling capability |
Compared with SMBJ33A and SMCJ33A, the TPSMA33HE3_A/I offers the smallest footprint (SMA) and AEC-Q101 qualification out-of-the-box, making it optimal for space-constrained automotive modules where 400 W surge immunity suffices and RoHS/halogen-free compliance is required.
Availability
TPSMA33HE3_A/I is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor interfaces, and telecom DC power input circuits requiring stable component supply, AEC-Q101 qualification, and high-temperature operational reliability.
Supply support for TPSMA33HE3_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, thermal performance, and automotive qualification.
The TPSMAxxA family is engineered specifically for high-reliability transient suppression in harsh environments-targeting automotive power distribution, industrial automation, and infrastructure equipment where sustained +185 °C operation and AEC-Q101 validation are mandatory.
FAQ
What is the exact breakdown voltage range for TPSMA33HE3_A/I?
The TPSMA33HE3_A/I has a guaranteed breakdown voltage range of 31.4 V (minimum) to 34.7 V (maximum) at 1.0 mA test current, with a nominal value of 33.0 V. This range is measured per ANSI/IEEE C62.35 standards and remains stable across temperature due to its 0.089 %/°C temperature coefficient. The TPSMA33HE3_A/I maintains this specification under full AEC-Q101 qualification testing.
Is TPSMA33HE3_A/I suitable for automotive applications?
Yes, TPSMA33HE3_A/I is AEC-Q101 qualified and explicitly designated for automotive use via its HE3 suffix. It supports junction temperatures up to +185 °C, meets MSL Level 1 reflow requirements (260 °C peak), and is constructed with RoHS-compliant, matte tin-plated leads. These attributes make TPSMA33HE3_A/I appropriate for engine control units, body electronics, and ADAS power domains where reliability under thermal stress is critical.
What does the "A/I" suffix mean in TPSMA33HE3_A/I?
The "A/I" suffix in TPSMA33HE3_A/I indicates packaging configuration: "A" denotes revision code A per Vishay's internal documentation, and "I" specifies 13-inch diameter plastic tape and reel delivery containing 7500 units. This format complies with EIA-481 standards and is optimized for high-volume SMT assembly. The TPSMA33HE3_A/I part number uniquely identifies this specific reel configuration within the AEC-Q101-qualified HE3 product line.
How does TPSMA33HE3_A/I compare to bidirectional TVS diodes?
TPSMA33HE3_A/I is unidirectional only, meaning it clamps positive transients on the cathode side relative to anode (ground). Unlike bidirectional variants, it does not suppress negative-going surges on the same line. Its advantage lies in lower leakage (<1 µA at 28.2 V) and tighter VBR tolerance-ideal for DC power rail protection. For AC or differential signal lines, a separate bidirectional device would be needed; TPSMA33HE3_A/I serves best in single-polarity, ground-referenced protection schemes.
What is the maximum clamping voltage of TPSMA33HE3_A/I under surge conditions?
The maximum clamping voltage (VC) of TPSMA33HE3_A/I is 45.7 V at 8.8 A peak pulse current (IPPM) using the standardized 10/1000 µs waveform. This value is guaranteed across temperature and represents the upper limit of voltage imposed on protected circuitry during worst-case surge events. The TPSMA33HE3_A/I achieves this with low incremental surge resistance, ensuring predictable, repeatable protection behavior in automotive and industrial designs.
TPSMA33HE3_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):
- 26.8V
- Voltage - Breakdown (Min):
- 29.7V
- Voltage - Clamping (Max) @ Ipp:
- 47V
- Current - Peak Pulse (10/1000µs):
- 8.4A
- 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)
TPSMA33HE3_A/I FAQ
1.How can I place an order for TPSMA33HE3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMA33HE3_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 TPSMA33HE3_A/I reliable?
The price and inventory of TPSMA33HE3_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 TPSMA33HE3_A/I is usually 5 days.
3.What payment methods are accepted for TPSMA33HE3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMA33HE3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMA33HE3_A/I?
TPSMA33HE3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMA33HE3_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 TPSMA33HE3_A/I?
For technical support, including TPSMA33HE3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMA33HE3_A/I requirements.
6.How does Aetrix verify that TPSMA33HE3_A/I is sourced from the original manufacturer or authorized distributors?
All TPSMA33HE3_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 TPSMA33HE3_A/I meets industry standards.
7.What is the process for return or replacement of TPSMA33HE3_A/I?
All TPSMA33HE3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with TPSMA33HE3_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 TPSMA33HE3_A/I part is unused and in its original packaging.
Return procedure for TPSMA33HE3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPSMA33HE3_A/I Tags
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