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Vishay General Semiconductor - Diodes Division 1.5SMC22CAHE3_A/I
- Part No.:
- 1.5SMC22CAHE3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC22CAHE3_A/I.pdf
- Description:
- TVS DIODE 18.8VWM 30.6VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:9,253
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Product details
Overview
1.5SMC22CAHE3_A/I from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the SMC (DO-214AB) package, designed for high-energy surge protection. It features a 22 V breakdown voltage (VBR = 20.9–23.1 V at IT = 1.0 mA), 1500 W peak pulse power (10/1000 μs), and clamps transients to ≤30.6 V at 49.0 A peak pulse current - deployed across automotive sensor lines, industrial I/O ports, and telecom interface protection.
For engineers reviewing the 1.5SMC22CAHE3_A/I datasheet, 1.5SMC22CAHE3_A/I pinout, 1.5SMC22CAHE3_A/I application, or 1.5SMC22CAHE3_A/I equivalent, this part delivers AEC-Q101 qualification, low incremental surge resistance, and MSL Level 1 moisture sensitivity - critical for automotive-grade board-level ESD and lightning surge resilience in production-constrained designs.
Technical Context
This bidirectional TVS operates symmetrically in both polarities, with identical VBR, VWM (18.8 V), and clamping performance regardless of voltage polarity. Its glass-passivated junction ensures stable leakage (<1.0 μA at VWM) and fast response time (<1.0 ns), enabling effective suppression of fast-rising transients induced by inductive switching or ESD events.
The device is rated for 150 °C maximum junction temperature and exhibits a thermal resistance of RθJA = 75 °C/W (on recommended 8.0 mm × 8.0 mm copper pads). Its 200 A IFSM rating (unidirectional only) does not apply here due to bidirectional construction, but its robust 1500 W PPPM capability remains fully valid under bidirectional 10/1000 μs surges.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage VBR | 20.9–23.1 V at 1.0 mA test current - defines precise voltage threshold where avalanche conduction begins in either direction. |
| Stand-off Voltage VWM | 18.8 V - maximum continuous reverse working voltage before significant leakage; ensures no false triggering during normal operation. |
| Clamping Voltage VC | 30.6 V at 49.0 A IPPM - actual voltage seen by protected circuit during worst-case 10/1000 μs surge; determines safe margin for downstream ICs. |
| Peak Pulse Power PPPM | 1500 W (10/1000 μs waveform) - quantifies transient energy absorption capacity without failure; supports IEC 61000-4-5 Level 4 compliance. |
| Package | SMC (DO-214AB) - industry-standard surface-mount outline with 7.75 mm × 6.22 mm footprint and 2.62 mm height; optimized for automated placement and thermal pad layout. |
| AEC-Q101 Qualified | Yes - validated for automotive applications per stress test requirements including HTOL, TC, UHAST, and ESD; suffix HE3 denotes qualification. |
| Moisture Sensitivity | MSL Level 1 (J-STD-020) - no floor life limitation; can be reflowed at peak 260 °C without baking preconditioning. |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, bidirectional configuration with no polarity marking - terminals are symmetrical and interchangeable.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | Anode/Cathode (bidirectional) | Either terminal serves as anode or cathode depending on instantaneous polarity; no fixed polarity - enables symmetrical surge clamping. |
| Terminal 2 | Anode/Cathode (bidirectional) | Electrically identical to Terminal 1; forms a non-polarized two-terminal device - simplifies PCB layout and eliminates orientation errors. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional 1500 W surge handling | Enables single-device protection of AC-coupled or differential signal lines (e.g., RS-485, CAN FD, Ethernet PHY) without polarity concerns. |
| Glass-passivated junction | Ensures long-term stability of VBR and low leakage (<1.0 μA at VWM) across temperature and lifetime - critical for low-power sensor interfaces. |
| AEC-Q101 qualified (HE3 suffix) | Validated for automotive under-hood and infotainment systems; supports PPAP documentation and zero-defect manufacturing requirements. |
| Low-profile SMC package | Reduces board space vs. larger DO-214AA/DO-214AC; compatible with standard pick-and-place equipment and reflow profiles up to 260 °C. |
| UL 497B recognized (QVGQ2) | Meets Underwriters Laboratories requirements for telecom and industrial surge protectors - accelerates end-equipment safety certification. |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
|
Use Scenario: Protecting 5 V or 12 V analog sensor outputs (e.g., pressure, temperature) from load-dump and ISO 7637-2 pulses in vehicle ECUs. IC Role / Device Role: Bidirectional clamping element placed directly at connector entry point to shunt surge energy before reaching ADC front-end or op-amp buffer. Use Value: Clamps 10/1000 μs transients to ≤30.6 V while maintaining <1.0 μA leakage at 18.8 V - preserves signal integrity and avoids false triggers in precision measurement circuits. |
Use Scenario: Safeguarding 24 V digital input modules in programmable logic controllers against field-wiring surges and relay coil kickback. IC Role / Device Role: Primary overvoltage clamp on each isolated input channel, mounted adjacent to optocoupler or digital isolator inputs. Use Value: Absorbs up to 1500 W of transient energy without degradation, ensuring >100,000 surge cycles per IEC 61000-4-5 - extends system uptime in harsh factory environments. |
| Telecom Line Interface | Consumer USB Port Protection |
|
Use Scenario: Shielding RS-485 transceivers in base station backhaul links from lightning-induced common-mode surges on twisted-pair cabling. IC Role / Device Role: Common-mode TVS across differential pair (A–B) plus line-to-ground clamps - used in conjunction with GDT or MOV for staged protection. Use Value: Symmetrical VBR and VC ensure balanced clamping on both lines, preventing data corruption during ±30 kV ESD contact discharge per IEC 61000-4-2. |
Use Scenario: Adding secondary surge immunity to USB 2.0 data lines (D+/D−) in smart home hubs exposed to user-handling ESD and nearby AC mains coupling. IC Role / Device Role: Low-capacitance (<50 pF typical) bidirectional TVS placed immediately after USB connector, before ESD diode array or transceiver. Use Value: 30.6 V clamping voltage protects 3.3 V USB PHY receivers while adding <0.3 pF parasitic capacitance - maintains signal integrity up to 480 Mbps. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ22CA | Same VBR range (20.9–23.1 V) and bidirectional function, but lower PPPM (600 W) and SMB package (smaller thermal mass). | Limited to lower-energy threats (IEC 61000-4-5 Level 2); unsuitable for automotive load-dump or industrial lightning surges. | Select when board space is constrained and surge threat level is known to be ≤600 W - verify thermal derating on 5.0 mm × 5.0 mm pads. |
| 1.5KE22CA | Through-hole TO-204AA (DO-15) package; identical electrical specs but higher RθJA (~100 °C/W) and no AEC-Q101 qualification. | Not suitable for automated SMT lines or automotive production; requires wave soldering and manual inspection. | Choose only for legacy through-hole designs or prototyping where rework tolerance outweighs production efficiency and qualification needs. |
Compared with SMBJ22CA and 1.5KE22CA, the 1.5SMC22CAHE3_A/I uniquely combines AEC-Q101 qualification, 1500 W surge rating, and SMC package - making it the only option among the three qualified for volume automotive SMT production with full IEC 61000-4-5 Level 4 compliance.
Availability
1.5SMC22CAHE3_A/I is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC I/O cards, and telecom line interface boards requiring stable component supply, AEC-Q101 traceability, and consistent SMC (DO-214AB) packaging across production lots.
Supply support for 1.5SMC22CAHE3_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, MOSFETs, and protection devices with emphasis on reliability, automotive qualification, and high-volume manufacturability.
The 1.5SMC Series was engineered specifically for surface-mount transient suppression in automotive, industrial, and telecom infrastructure - balancing high power density, AEC-Q101 compliance, and UL recognition in a standardized SMC footprint.
FAQ
What is the clamping voltage of the 1.5SMC22CAHE3_A/I under a 10/1000 μs surge?
The 1.5SMC22CAHE3_A/I clamps to a maximum of 30.6 V at 49.0 A peak pulse current under the standardized 10/1000 μs waveform. This value is measured per Figure 1 in Vishay Document 88303 and represents the upper limit of voltage imposed on protected circuitry during worst-case surge events - critical for verifying headroom against downstream IC absolute maximum ratings.
Is the 1.5SMC22CAHE3_A/I suitable for automotive applications?
Yes, the 1.5SMC22CAHE3_A/I is AEC-Q101 qualified (denoted by the HE3 suffix) and tested per automotive stress requirements including high-temperature operating life, temperature cycling, and unbiased HAST. It is approved for use in engine control units, body electronics, and ADAS sensor interfaces where robust transient immunity and zero-defect reliability are mandated.
How does the bidirectional design of the 1.5SMC22CAHE3_A/I affect PCB layout?
The 1.5SMC22CAHE3_A/I has no polarity marking and identical electrical behavior in both directions, so PCB layout requires no orientation check during placement. Terminals are interchangeable - simplifying routing for differential signals like RS-485 or CAN, eliminating risk of reverse installation, and reducing assembly verification steps in high-volume SMT lines.
What is the maximum operating temperature for the 1.5SMC22CAHE3_A/I?
The 1.5SMC22CAHE3_A/I has a maximum junction temperature (TJ) of +150 °C and operates across a storage and junction temperature range of –65 °C to +150 °C. Its thermal resistance RθJA is 75 °C/W when mounted on the recommended 8.0 mm × 8.0 mm copper pads - enabling reliable operation in under-hood automotive or industrial control cabinet environments.
Does the 1.5SMC22CAHE3_A/I meet any safety certifications?
Yes, the 1.5SMC22CAHE3_A/I carries Underwriters Laboratories (UL) recognition under file E136766 for both unidirectional and bidirectional configurations, compliant with UL 497B for telecommunications protectors. This certification validates its suitability for safety-critical surge protection in telecom infrastructure and industrial equipment requiring third-party safety approval.
1.5SMC22CAHE3_A/I Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- 1.5SMC, TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 18.8V
- Voltage - Breakdown (Min):
- 20.9V
- Voltage - Clamping (Max) @ Ipp:
- 30.6V
- Current - Peak Pulse (10/1000µs):
- 49A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCJ)
1.5SMC22CAHE3_A/I FAQ
1.How can I place an order for 1.5SMC22CAHE3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC22CAHE3_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 1.5SMC22CAHE3_A/I reliable?
The price and inventory of 1.5SMC22CAHE3_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 1.5SMC22CAHE3_A/I is usually 5 days.
3.What payment methods are accepted for 1.5SMC22CAHE3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC22CAHE3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC22CAHE3_A/I?
1.5SMC22CAHE3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC22CAHE3_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 1.5SMC22CAHE3_A/I?
For technical support, including 1.5SMC22CAHE3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC22CAHE3_A/I requirements.
6.How does Aetrix verify that 1.5SMC22CAHE3_A/I is sourced from the original manufacturer or authorized distributors?
All 1.5SMC22CAHE3_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 1.5SMC22CAHE3_A/I meets industry standards.
7.What is the process for return or replacement of 1.5SMC22CAHE3_A/I?
All 1.5SMC22CAHE3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC22CAHE3_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 1.5SMC22CAHE3_A/I part is unused and in its original packaging.
Return procedure for 1.5SMC22CAHE3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC22CAHE3_A/I Tags
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