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Vishay General Semiconductor - Diodes Division TPSMA22AHE3_B/I
- Part No.:
- TPSMA22AHE3_B/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
TPSMA22AHE3_B/I.pdf
- Description:
- TVS DIODE 18.8VWM 30.6VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:3,459
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Product details
Overview
TPSMA22AHE3_B/I from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMA (DO-214AC) package, rated for 22 V breakdown voltage (VBR = 20.9–23.1 V at 1 mA), 30.6 V clamping voltage (VC) at 13.1 A peak pulse current, and 400 W peak pulse power (10/1000 µs). It operates up to +185 °C junction temperature and is AEC-Q101 qualified for automotive electronics protection.
For engineers reviewing the TPSMA22AHE3_B/I datasheet, TPSMA22AHE3_B/I pinout, TPSMA22AHE3_B/I application, or TPSMA22AHE3_B/I equivalent, key selection criteria include unidirectional polarity, 18.8 V stand-off voltage (VWM), low 1.0 µA reverse leakage at VWM, TJ = 185 °C capability, and RoHS-compliant, halogen-free HE3 suffix construction.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology to deliver stable clamping under repetitive transients. Its 10/1000 µs waveform rating supports surge immunity per IEC 61000-4-5 Level 4, with derating above 25 °C per Fig. 2 of the datasheet.
The device features very fast response time (<1 ns), low incremental surge resistance, and meets MSL level 1 (260 °C peak reflow). Polarity is marked by cathode band; terminals are matte tin plated and solderable per J-STD-002 and JESD 22-B102.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 20.9 V / 22.0 V / 23.1 V at 1.0 mA - defines precise voltage threshold where avalanche conduction begins |
| VWM | 18.8 V - maximum continuous reverse operating voltage before significant leakage |
| VC @ IPPM | 30.6 V at 13.1 A - clamped voltage during 400 W transient, limiting downstream IC stress |
| PPPM | 400 W (10/1000 µs) - peak surge energy handling capacity under standardized lightning-like pulse |
| TJ max. | +185 °C - enables use in under-hood automotive modules without thermal derating penalties |
| Polarity | Unidirectional - protects only against positive transients on anode-to-cathode path |
| Package | SMA (DO-214AC) - industry-standard SMD outline with 0.208" x 0.177" footprint and 0.078" height |
Pinout & Package
SMA (DO-214AC) package: surface-mount, molded epoxy 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 | Transient current entry point during positive overvoltage | Connected to protected line (e.g., power rail or signal); conducts when VANODE − VCATHODE > VBR |
| Cathode | Transient current return path and reference node | Typically tied to ground or lower-potential rail; polarity band identifies this terminal |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per stress test plan |
| Junction passivation | Optimized anisotropic rectifier structure ensures stable VBR drift < ±5 % over lifetime at 150 °C |
| MSL Level 1 rating | Zero moisture sensitivity - safe for standard SMT reflow up to 260 °C peak without baking |
| Low clamping ratio (VC/VBR) | 1.39 - tight margin between breakdown and clamping improves system-level surge margin vs. competing 22 V TVS devices |
| RoHS & halogen-free compliance | HE3 suffix confirms full compliance with EU RoHS Directive 2011/65/EU and JEDEC JS709E halogen limits |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: Protecting 24 V supply lines in engine control units (ECUs) from load dump and alternator transients. IC Role / Device Role / Timing Role: Unidirectional TVS clamps positive surges above 18.8 V while remaining high-impedance during normal operation. Use Value: Withstands 400 W pulses and operates up to +185 °C, enabling direct placement near high-temperature power stages without derating. | Use Scenario: Shielding analog outputs of pressure or temperature sensors in factory automation systems from ESD and switching noise. IC Role / Device Role / Timing Role: Fast-response (sub-ns) clamping diverts transient energy away from precision ADC inputs and op-amp buffers. Use Value: Low 1.0 µA leakage at 18.8 V preserves sensor accuracy; SMA package allows compact layout adjacent to connector interfaces. |
| Telecom DC Power Input Protection | Consumer USB-C Port Surge Suppression |
Use Scenario: Safeguarding 24–48 V DC input stages of PoE-powered network switches and base stations. IC Role / Device Role / Timing Role: Standoff voltage (18.8 V) accommodates wide-input DC-DC converters while clamping lightning-induced surges per IEC 61000-4-5. Use Value: 30.6 V clamping voltage ensures downstream regulators remain within absolute maximum ratings during 10/1000 µs transients. | Use Scenario: Adding secondary-level surge protection on VBUS lines of USB-C receptacles in laptops and docking stations. IC Role / Device Role / Timing Role: Unidirectional configuration blocks positive transients on VBUS while allowing normal 5–20 V operation. Use Value: SMA footprint integrates seamlessly into tight board spaces; AEC-Q101 qualification supports extended product lifecycle requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ22A | Same VBR range (20.9–23.1 V), but SMB package (DO-214AA); 600 W PPPM; higher thermal resistance (RθJA ≈ 70 °C/W vs. SMA's ~55 °C/W) | Higher power handling but larger footprint; less suitable for dense automotive PCBs | Select SMBJ22A only if system-level surge tests require >400 W margin and board space permits larger package |
| 1.5SMC22A | Same electrical specs, but SMC (DO-214AB) package; 1500 W PPPM; significantly larger (0.275" × 0.260") and higher cost | Used in industrial mains-connected equipment where higher surge classes apply | Choose 1.5SMC22A only when legacy designs mandate SMC footprint or IEC 61000-4-5 Level 5 compliance is required |
Compared with SMBJ22A and 1.5SMC22A, the TPSMA22AHE3_B/I delivers optimal balance of automotive qualification, compact SMA footprint, and verified 400 W surge performance-making it preferred for space-constrained, high-reliability 24 V systems where thermal management and AEC-Q101 compliance are mandatory.
Availability
TPSMA22AHE3_B/I is available at Aetrix Electronics and suitable for automotive ECUs, industrial sensor nodes, telecom power supplies, and consumer USB-C interface protection requiring stable component supply across long production lifecycles.
Supply support for TPSMA22AHE3_B/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, MOSFETs, optoelectronics, and passive components with emphasis on reliability, high-temperature operation, and automotive qualification.
The TPSMAxxA series belongs to Vishay's PAR® (Protected Avalanche Rectifier) transient voltage suppressor family, engineered specifically for robust, high-temperature surge protection in automotive and industrial environments where AEC-Q101 compliance and 185 °C operation are critical.
FAQ
What is the exact breakdown voltage range for TPSMA22AHE3_B/I?
The TPSMA22AHE3_B/I has a guaranteed breakdown voltage (VBR) range of 20.9 V to 23.1 V at 1.0 mA test current, measured per ANSI/IEEE C62.35. This tolerance reflects manufacturing consistency and ensures reliable triggering across temperature and lifetime, with typical value at 22.0 V.
Is TPSMA22AHE3_B/I suitable for automotive applications?
Yes, TPSMA22AHE3_B/I is AEC-Q101 qualified and carries the HE3 suffix, confirming compliance with automotive reliability standards including HTGB, H3TRB, and temperature cycling. Its +185 °C maximum junction temperature and MSL Level 1 rating make it suitable for under-hood and body-control module deployments.
What does the "HE3_B/I" suffix mean in TPSMA22AHE3_B/I?
The "HE3" denotes RoHS-compliant, AEC-Q101 qualified construction with matte tin plating; "B" indicates revision code B; "I" specifies packaging in 13" diameter plastic tape and reel with 7500 units per reel - distinct from "H" (7" reel, 1800 units).
How does TPSMA22AHE3_B/I compare to bidirectional TVS diodes?
TPSMA22AHE3_B/I is unidirectional and protects only positive transients on the anode-to-cathode path. Unlike bidirectional variants, it offers lower capacitance and tighter VBR tolerance, making it ideal for DC power rails and single-polarity signal lines where reverse-voltage blocking is not required.
What is the clamping voltage of TPSMA22AHE3_B/I at its rated peak pulse current?
The TPSMA22AHE3_B/I clamps to a maximum of 30.6 V at its rated peak pulse current of 13.1 A (10/1000 µs waveform), ensuring downstream circuitry remains within safe operating limits during surge events - a key parameter verified per Fig. 5 in Document Number 88405.
TPSMA22AHE3_B/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:
- Active
- 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_B/I FAQ
1.How can I place an order for TPSMA22AHE3_B/I through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMA22AHE3_B/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 TPSMA22AHE3_B/I reliable?
The price and inventory of TPSMA22AHE3_B/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPSMA22AHE3_B/I is usually 5 days.
3.What payment methods are accepted for TPSMA22AHE3_B/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMA22AHE3_B/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMA22AHE3_B/I?
TPSMA22AHE3_B/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMA22AHE3_B/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 TPSMA22AHE3_B/I?
For technical support, including TPSMA22AHE3_B/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMA22AHE3_B/I requirements.
6.How does Aetrix verify that TPSMA22AHE3_B/I is sourced from the original manufacturer or authorized distributors?
All TPSMA22AHE3_B/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 TPSMA22AHE3_B/I meets industry standards.
7.What is the process for return or replacement of TPSMA22AHE3_B/I?
All TPSMA22AHE3_B/I units undergo pre-shipment inspection (PSI). If there is an issue with TPSMA22AHE3_B/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 TPSMA22AHE3_B/I part is unused and in its original packaging.
Return procedure for TPSMA22AHE3_B/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPSMA22AHE3_B/I Tags
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