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Vishay General Semiconductor - Diodes Division 1.5SMC22CAHE3/9AT
- Part No.:
- 1.5SMC22CAHE3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC22CAHE3/9AT.pdf
- Description:
- TVS DIODE 18.8VWM 30.6VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:9,430
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Product details
Overview
1.5SMC22CAHE3/9AT from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMC (DO-214AB) package, designed for clamping voltage transients up to 30.6 V at 49.0 A peak pulse current (10/1000 μs), with 1500 W peak pulse power rating and 18.8 V stand-off voltage - used to protect automotive sensor signal lines, industrial I/O ports, and telecom interface circuits.
For engineers reviewing the 1.5SMC22CAHE3/9AT datasheet, 1.5SMC22CAHE3/9AT pinout, 1.5SMC22CAHE3/9AT application, or 1.5SMC22CAHE3/9AT equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, low incremental surge resistance, and compatibility with automated SMT assembly on standard PCB pad layouts.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, delivering consistent clamping performance regardless of transient polarity. Its glass-passivated junction ensures stable breakdown behavior and fast response time (<1 ns), while the SMC package supports high thermal dissipation under repetitive surge conditions.
The device meets MSL Level 1 per J-STD-020 (peak reflow ≤260 °C), features matte tin-plated leads compliant with J-STD-002 and JESD 22-B102, and is rated for operation from –65 °C to +150 °C junction temperature - enabling use in under-hood automotive environments and industrial control systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power (10/1000 μs) | 1500 W - sustains high-energy lightning or inductive-switching surges without failure |
| Stand-off Voltage (VWM) | 18.8 V - maximum continuous reverse voltage before significant leakage begins |
| Breakdown Voltage (VBR) | 20.9–23.1 V at 1 mA - precise voltage threshold where avalanche conduction initiates |
| Clamping Voltage (VC) | 30.6 V at 49.0 A IPPM - limits transient voltage seen by protected ICs to safe levels |
| Operating Temperature Range | –65 °C to +150 °C - supports deployment in extreme ambient conditions including automotive engine compartments |
| AEC-Q101 Qualified | Yes - validated for automotive-grade reliability per stress-test requirements for discrete semiconductors |
| Package | SMC (DO-214AB) - industry-standard surface-mount outline with 7.75 mm × 6.22 mm footprint and 2.62 mm height |
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 |
|---|---|---|
| Anode / Cathode (symmetrical) | Bidirectional terminal pair | Either terminal serves as anode or cathode depending on transient polarity; no band marking required |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power (10/1000 μs) | Enables robust protection against IEC 61000-4-5 Level 4 surges (4 kV line-to-line) without derating |
| AEC-Q101 qualification | Validated for automotive applications including ADAS sensor interfaces and body control modules |
| Glass passivated junction | Ensures long-term stability of breakdown voltage and low leakage drift over temperature and lifetime |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and compatibility with standard lead-free reflow profiles up to 260 °C peak |
| Low incremental surge resistance | Minimizes clamping voltage overshoot during fast-rising transients (e.g., ESD or relay bounce) |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load-dump and ISO 7637-2 pulses in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed directly at connector entry point to shunt surge energy before reaching sensitive front-end circuitry. Use Value: Maintains signal integrity under 10/1000 μs transients up to 1500 W while meeting AEC-Q101 requirements for automotive qualification. |
Use Scenario: Safeguarding digital input/output channels on programmable logic controllers exposed to inductive kickback from solenoids and motor drivers. IC Role / Device Role / Timing Role: Fast-response TVS deployed across each I/O line to limit transient voltage to ≤30.6 V during switching events. Use Value: Prevents latch-up or permanent damage to microcontroller GPIOs and level translators operating at 24 V nominal supply. |
| Telecom Interface Protection | Consumer Power Adapter ESD Protection |
Use Scenario: Shielding RS-485/RS-232 transceiver pins in base station equipment from lightning-induced surges on long cable runs. IC Role / Device Role / Timing Role: Bidirectional clamping device placed between transceiver and connector, referenced to local ground plane. Use Value: Clamps common-mode transients to <31 V within nanoseconds, preserving data integrity during field-deployed operation. |
Use Scenario: Adding secondary-level surge immunity to USB-C or barrel-jack input stages in wall adapters subjected to user-handling ESD. IC Role / Device Role / Timing Role: Low-capacitance TVS integrated near input filter stage to absorb ±15 kV contact discharge per IEC 61000-4-2. Use Value: Provides fail-safe clamping without affecting 5–20 V DC input regulation due to minimal leakage (<1 μA at 18.8 V). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ22CA | Lower peak pulse power (600 W), same VWM/VBR/VC ratings, SMB package (smaller footprint, lower thermal mass) | Suitable for space-constrained consumer electronics but not for automotive or industrial surge compliance requiring 1500 W | Select when board area is critical and surge energy is limited to IEC 61000-4-5 Level 2 (2 kV) |
| 1.5KE22CA | Through-hole DO-201 package, identical electrical specs, higher RθJA (100 °C/W vs. 75 °C/W), no AEC-Q101 option | Used in legacy designs or prototyping where manual assembly or socketing is acceptable | Choose only if SMT is unavailable or thermal cycling demands through-hole mechanical robustness |
Compared with SMBJ22CA and 1.5KE22CA, the 1.5SMC22CAHE3/9AT delivers superior surge handling in a surface-mount form factor with automotive qualification - making it the preferred choice for production-grade automotive and industrial systems requiring repeatable 1500 W transient immunity.
Availability
1.5SMC22CAHE3/9AT is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O protection, and telecom interface circuits requiring stable component supply, AEC-Q101 traceability, and full production support.
Supply support for 1.5SMC22CAHE3/9AT 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, precision, and application-specific optimization.
The 1.5SMC Series targets high-energy transient suppression in harsh environments - engineered for automotive, industrial, and telecom applications where robustness, consistency, and qualification compliance are mandatory.
FAQ
What is the clamping voltage of the 1.5SMC22CAHE3/9AT at its rated peak pulse current?
The 1.5SMC22CAHE3/9AT has a maximum clamping voltage (VC) of 30.6 V at 49.0 A peak pulse current (IPPM) under the standard 10/1000 μs waveform. This value is measured per JEDEC test conditions and defines the upper voltage limit imposed on protected circuitry during surge events - critical for ensuring downstream ICs remain within absolute maximum ratings.
Is the 1.5SMC22CAHE3/9AT suitable for automotive applications?
Yes, the 1.5SMC22CAHE3/9AT is AEC-Q101 qualified, as indicated by the "HE3" suffix, and is specifically intended for automotive use cases including sensor signal line protection, infotainment interfaces, and body electronics. It undergoes stress testing for temperature cycling, humidity, and surge endurance per AEC-Q101 requirements - confirmed in Vishay's official documentation for this part number.
What does the "CA" suffix mean in 1.5SMC22CAHE3/9AT?
The "CA" suffix in 1.5SMC22CAHE3/9AT denotes a bidirectional configuration - meaning the device provides symmetrical transient suppression for both positive and negative voltage excursions. Unlike unidirectional variants (e.g., "A"), the CA version has no cathode marking and functions identically in either polarity, making it ideal for AC-coupled or differential signal paths such as RS-485 or CAN bus lines.
What is the thermal resistance of the 1.5SMC22CAHE3/9AT?
The 1.5SMC22CAHE3/9AT has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on the recommended 8.0 mm × 8.0 mm copper pads per terminal. Its junction-to-lead resistance (RθJL) is 15 °C/W, supporting efficient heat transfer to the PCB - essential for maintaining reliability during repetitive surge events in high-temperature environments.
Does the 1.5SMC22CAHE3/9AT require special PCB layout considerations?
Yes - optimal performance requires mounting the 1.5SMC22CAHE3/9AT on minimum 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal, as specified in the Vishay datasheet. Reduced pad size increases thermal impedance and may cause premature failure under repeated 1500 W surges. Additionally, short, low-inductance traces to ground and protected nodes are essential to preserve sub-nanosecond response time.
1.5SMC22CAHE3/9AT 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:
- Discontinued at Digi-Key
- 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)
1.5SMC22CAHE3/9AT FAQ
1.How can I place an order for 1.5SMC22CAHE3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC22CAHE3/9AT 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 1.5SMC22CAHE3/9AT reliable?
The price and inventory of 1.5SMC22CAHE3/9AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC22CAHE3/9AT is usually 5 days.
3.What payment methods are accepted for 1.5SMC22CAHE3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC22CAHE3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC22CAHE3/9AT?
1.5SMC22CAHE3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC22CAHE3/9AT 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 1.5SMC22CAHE3/9AT?
For technical support, including 1.5SMC22CAHE3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC22CAHE3/9AT requirements.
6.How does Aetrix verify that 1.5SMC22CAHE3/9AT is sourced from the original manufacturer or authorized distributors?
All 1.5SMC22CAHE3/9AT 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 1.5SMC22CAHE3/9AT meets industry standards.
7.What is the process for return or replacement of 1.5SMC22CAHE3/9AT?
All 1.5SMC22CAHE3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC22CAHE3/9AT, 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 1.5SMC22CAHE3/9AT part is unused and in its original packaging.
Return procedure for 1.5SMC22CAHE3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC22CAHE3/9AT Tags
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