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Vishay General Semiconductor - Diodes Division TPSMA22AHE3/5AT
- Part No.:
- TPSMA22AHE3/5AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
TPSMA22AHE3/5AT.pdf
- Description:
- TVS DIODE 18.8VWM 30.6VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:9,156
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Product details
Overview
TPSMA22AHE3/5AT 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 22 V nominal breakdown voltage (VBR = 20.9–23.1 V at 1 mA), 30.6 V maximum clamping voltage (VC) at 13.1 A peak pulse current, 400 W peak pulse power (10/1000 µs), and operates up to +185 °C junction temperature - ideal for automotive power rail protection.
For engineers reviewing the TPSMA22AHE3/5AT datasheet, TPSMA22AHE3/5AT pinout, TPSMA22AHE3/5AT application, or TPSMA22AHE3/5AT equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification, 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 uses passivated anisotropic rectifier technology optimized for high-temperature stability and low incremental surge resistance. Its unidirectional configuration provides forward conduction only during overvoltage events on the cathode-anode path, enabling robust clamping without reverse leakage degradation at elevated temperatures.
The device meets JESD201 Class 2 whisker resistance and is rated for repetitive 10/1000 µs surges at 0.01% duty cycle. Its thermal design supports operation across -65 °C to +185 °C, with derating curves defined for peak pulse power above 25 °C ambient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 20.9 V / 22.0 V / 23.1 V at 1 mA - defines precise voltage threshold where clamping initiates under controlled test conditions |
| VWM | 18.8 V - maximum continuous working voltage before leakage exceeds 1 µA, setting safe operating margin below breakdown |
| VC @ IPPM | 30.6 V at 13.1 A - clamped voltage during 400 W transient, directly limiting downstream IC stress |
| PPPM | 400 W (10/1000 µs waveform) - peak surge energy handling capacity under standardized lightning/inductive-switching test profile |
| TJ max. | +185 °C - enables use in under-hood automotive environments and high-power industrial enclosures without thermal derating penalties |
| Polarity | Unidirectional - allows forward-biased clamping only; requires correct orientation relative to protected line polarity |
| MSL Level | Level 1 (J-STD-020) - supports standard reflow without dry-pack or baking requirements |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, molded plastic case with matte tin-plated leads. Cathode indicated by color band. Compliant with UL 94 V-0 flammability rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during clamping event | Connected to protected line (e.g., 24 V rail); conducts surge current toward ground when cathode is held at higher potential |
| Cathode | Current exit point during clamping event | Connected to system ground or low-impedance return path; voltage reference for breakdown initiation |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing - required for engine control, ADAS, and body electronics |
| 185 °C junction rating | Enables uninterrupted operation in high-ambient environments such as power inverters and motor drives without thermal shutdown |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients, improving protection margin for sensitive 3.3 V or 5 V logic interfaces |
| 400 W peak pulse power | Withstands ISO 7637-2 Pulse 1, 2a, 3a/b, and IEC 61000-4-5 Level 4 surges when mounted on recommended 5.0 mm × 5.0 mm copper pads |
| J-STD-002/JESD 22-B102 solderability | Ensures reliable reflow joint formation on PCBs without voiding or dewetting, critical for high-volume automotive manufacturing |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Clamping |
|---|---|
Use Scenario: Protecting 24 V supply inputs of engine control units (ECUs) against load dump and alternator ripple transients. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed between battery rail and input filter capacitor to clamp spikes above 30.6 V. Use Value: Prevents damage to downstream DC-DC converters and microcontrollers by limiting transient voltage to ≤30.6 V at 13.1 A, meeting ISO 16750-2 requirements. | Use Scenario: Safeguarding analog output lines (e.g., 4–20 mA current loops) of pressure sensors in factory automation systems. IC Role / Device Role / Timing Role: TVS placed across sensor output terminals to shunt ESD and switching noise induced by nearby solenoid drivers. Use Value: Maintains signal integrity by suppressing transients within 1 ns response time while adding <1 pF junction capacitance at zero bias. |
| Telecom DC Power Input Protection | Consumer Device USB Port Surge Suppression |
Use Scenario: Securing -48 V DC input of telecom base station power modules against lightning-induced surges on outdoor cabling. IC Role / Device Role / Timing Role: Unidirectional TVS connected between -48 V rail and chassis ground to clamp negative-going transients. Use Value: Withstands 400 W pulses per ITU-T K.21 Basic Level and maintains stable clamping performance after 1000+ surge events due to passivated junction design. | Use Scenario: Adding secondary-level surge protection on VBUS line of USB-C ports in portable monitors and docking stations. IC Role / Device Role / Timing Role: TVS installed upstream of USB power delivery controller to absorb hot-plug and ESD events before reaching IC pins. Use Value: Limits VBUS overvoltage to ≤30.6 V during 8 kV contact ESD (IEC 61000-4-2), preventing latch-up or gate oxide damage in PD controllers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ22A | Same VBR range (20.9–23.1 V), but SMB (DO-214AA) package - 2.5 mm wider body, 0.5 mm taller, 10% larger footprint | Higher thermal mass improves single-pulse energy handling but reduces board density; less suitable for space-constrained automotive modules | Select SMBJ22A only if PCB layout allows larger pad area and thermal relief is prioritized over miniaturization. |
| 1.5SMC22A | Same electrical specs, but SMC (DO-214AB) package - 20% larger than SMA, rated for 1500 W peak pulse power (10/1000 µs) | Over-specified for most 400 W applications; used where legacy designs require backward-compatible form factor or higher margin is mandated | Choose 1.5SMC22A only when existing SMC footprints must be retained or system-level surge testing demands >400 W headroom. |
Compared with SMBJ22A and 1.5SMC22A, the TPSMA22AHE3/5AT delivers identical clamping performance in the smallest surface-mount footprint among these three, enabling higher component density and faster PCB routing - especially valuable in compact ECUs and multi-sensor modules where board space is constrained.
Availability
TPSMA22AHE3/5AT is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor signal line clamping, and telecom DC power input protection requiring stable component supply and AEC-Q101 compliance.
Supply support for TPSMA22AHE3/5AT 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 and automotive-grade solutions.
The TPSMA series was developed specifically for high-temperature, high-surge automotive and industrial applications - delivering AEC-Q101 qualified transient suppression in compact SMA packages with extended junction temperature capability.
FAQ
What is the maximum clamping voltage of the TPSMA22AHE3/5AT under standard test conditions?
The TPSMA22AHE3/5AT has a maximum clamping voltage (VC) of 30.6 V when subjected to its rated peak pulse current of 13.1 A using the 10/1000 µs waveform. This value is measured per JEDEC standards and ensures predictable overvoltage limiting for downstream components. The TPSMA22AHE3/5AT maintains this clamping performance across its full operating temperature range, with minimal drift due to its low temperature coefficient of 0.084 %/°C.
Is the TPSMA22AHE3/5AT qualified for automotive applications?
Yes, the TPSMA22AHE3/5AT is AEC-Q101 qualified, as confirmed by Vishay's documentation and ordering code suffix "HE3". It undergoes rigorous stress testing including high-temperature reverse bias, temperature cycling, and ESD verification. The TPSMA22AHE3/5AT is approved for use in engine control units, body electronics, and ADAS subsystems where sustained operation up to +185 °C junction temperature is required.
What does the "HE3" suffix indicate in TPSMA22AHE3/5AT?
The "HE3" suffix in TPSMA22AHE3/5AT denotes RoHS-compliant construction and AEC-Q101 qualification per Vishay's ordering nomenclature. It also indicates compliance with JESD201 Class 2 whisker resistance and MSL Level 1 moisture sensitivity. The "5AT" portion specifies tape-and-reel packaging in 7-inch reels with 1800 units per reel - a standard logistics configuration for automated SMT assembly of the TPSMA22AHE3/5AT.
How does the TPSMA22AHE3/5AT compare to bidirectional TVS diodes in surge protection?
The TPSMA22AHE3/5AT is unidirectional and therefore optimized for DC power line protection where polarity is fixed - offering lower leakage current (<1 µA at 18.8 V) and tighter VBR tolerance versus bidirectional equivalents. Unlike bidirectional TVS diodes, the TPSMA22AHE3/5AT cannot protect AC or dual-polarity signals. Its design prioritizes efficiency and precision in automotive 12 V/24 V systems, where the TPSMA22AHE3/5AT's unidirectional behavior avoids unnecessary conduction during normal operation.
What PCB layout recommendations apply to the TPSMA22AHE3/5AT for optimal surge performance?
Vishay specifies mounting the TPSMA22AHE3/5AT on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal to achieve rated 400 W pulse power. Short, low-inductance traces to ground are essential - keep the cathode-to-ground path under 5 mm. Avoid thermal reliefs on pads, and ensure ≥0.5 mm clearance to adjacent conductors. These practices maximize heat dissipation and minimize inductive voltage overshoot during fast transients, preserving the TPSMA22AHE3/5AT's specified clamping performance.
TPSMA22AHE3/5AT 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):
- 18.8V
- Voltage - Breakdown (Min):
- 20.9V
- Voltage - Clamping (Max) @ Ipp:
- 30.6V
- Current - Peak Pulse (10/1000µs):
- 13.1A
- 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)
TPSMA22AHE3/5AT FAQ
1.How can I place an order for TPSMA22AHE3/5AT through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMA22AHE3/5AT 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 TPSMA22AHE3/5AT reliable?
The price and inventory of TPSMA22AHE3/5AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPSMA22AHE3/5AT is usually 5 days.
3.What payment methods are accepted for TPSMA22AHE3/5AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMA22AHE3/5AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMA22AHE3/5AT?
TPSMA22AHE3/5AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMA22AHE3/5AT 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 TPSMA22AHE3/5AT?
For technical support, including TPSMA22AHE3/5AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMA22AHE3/5AT requirements.
6.How does Aetrix verify that TPSMA22AHE3/5AT is sourced from the original manufacturer or authorized distributors?
All TPSMA22AHE3/5AT 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 TPSMA22AHE3/5AT meets industry standards.
7.What is the process for return or replacement of TPSMA22AHE3/5AT?
All TPSMA22AHE3/5AT units undergo pre-shipment inspection (PSI). If there is an issue with TPSMA22AHE3/5AT, 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 TPSMA22AHE3/5AT part is unused and in its original packaging.
Return procedure for TPSMA22AHE3/5AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPSMA22AHE3/5AT Tags
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