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Vishay General Semiconductor - Diodes Division 1.5SMC22CAHE3_A/H
- Part No.:
- 1.5SMC22CAHE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC22CAHE3_A/H.pdf
- Description:
- TVS DIODE 18.8VWM 30.6VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:5,741
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Product details
Overview
1.5SMC22CAHE3_A/H from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMC (DO-214AB) package, rated for 22 V breakdown voltage (VBR = 20.9–23.1 V at 1 mA), 1500 W peak pulse power (10/1000 µs), and clamping voltage of 30.6 V at 49 A. It protects signal lines and power rails in automotive sensor units, industrial I/O interfaces, and telecom line cards against ESD, lightning surges, and inductive switching transients.
For engineers reviewing the 1.5SMC22CAHE3_A/H datasheet, 1.5SMC22CAHE3_A/H pinout, 1.5SMC22CAHE3_A/H application, or 1.5SMC22CAHE3_A/H equivalent, this AEC-Q101 qualified TVS offers verified bidirectional clamping, low incremental surge resistance, and MSL Level 1 reflow compatibility - critical for high-reliability automotive and industrial PCB designs requiring robust overvoltage immunity without polarity constraints.
Technical Context
This device operates as a voltage-clamped shunt protector: under normal conditions it presents high impedance (>1000 Ω at VWM = 18.8 V), then avalanches rapidly (<1 ns response) when transient voltage exceeds its 20.9–23.1 V breakdown range. Its bidirectional symmetry ensures identical clamping behavior across both polarities, eliminating need for orientation during placement.
Thermal design relies on low RθJL = 15 °C/W (junction-to-leads) and derated power dissipation (6.5 W at TA = 50 °C), with junction temperature limited to 150 °C. The glass-passivated junction and matte tin-plated leads meet J-STD-002 solderability and JESD201 Class 2 whisker resistance requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 20.9 V / 23.1 V at IT = 1 mA - defines precise avalanche onset threshold for reliable overvoltage triggering |
| VWM | 18.8 V - maximum continuous reverse operating voltage before leakage exceeds 1 μA |
| VC @ IPPM | 30.6 V at 49 A - clamped voltage during 1500 W transient, limiting downstream IC stress |
| PPPM | 1500 W (10/1000 µs waveform) - peak surge energy handling capacity for lightning/inductive spikes |
| Junction Temp. Range | −65 °C to +150 °C - supports operation in under-hood automotive and industrial ambient extremes |
| AEC-Q101 Qualified | Yes - validated for automotive electronics per stress test standard, including temperature cycling and HTRB |
| Package | SMC (DO-214AB), 7.75 mm × 6.22 mm × 2.62 mm - industry-standard footprint compatible with automated SMT assembly |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, bidirectional - no polarity marking; symmetrical terminal configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | Anode / Cathode (bidirectional) | Either terminal serves as anode or cathode depending on transient polarity - no fixed polarity assignment |
| Terminal 2 | Anode / Cathode (bidirectional) | Electrically identical to Terminal 1; device conducts equally in both directions above VBR |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity concerns |
| 1500 W peak pulse rating | Withstands IEC 61000-4-5 Level 4 (4 kV surge) on 2 Ω source impedance with margin |
| Low clamping ratio (VC/VBR ≈ 1.32) | Minimizes voltage overshoot during transients, reducing risk of downstream IC latch-up or damage |
| AEC-Q101 qualification | Validated for automotive-grade reliability including HTOL, TC, and UHAST - suitable for ADAS sensor modules |
| MSL Level 1 (260 °C peak) | Compatible with standard lead-free reflow profiles without pre-baking or special handling |
Applications
| Automotive Sensor Protection | Industrial RS-485 Interface |
|---|---|
Use Scenario: Protecting CAN/LIN bus nodes and analog sensor outputs (e.g., pressure, temperature) in engine control units exposed to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Shunt-type transient suppressor placed directly at connector entry point to clamp fast-rising surges before reaching MCU or signal conditioner. Use Value: Maintains signal integrity by limiting transient voltage to ≤30.6 V while surviving repeated 1500 W pulses - critical for ASIL-B functional safety compliance. |
Use Scenario: Guarding differential data lines in factory automation PLCs and motor drives subject to ground bounce and EFT bursts. IC Role / Device Role / Timing Role: Bidirectional TVS connected across A/B lines of RS-485 transceivers to absorb common-mode and differential-mode transients. Use Value: Symmetrical clamping ensures equal protection regardless of signal polarity swing, preventing false triggering or data corruption during EMC testing. |
| Telecom Line Card Surge Protection | Consumer Power Adapter Input Stage |
Use Scenario: Front-end protection of DSL/VDSL line interface circuits exposed to lightning-induced surges on outside plant wiring. IC Role / Device Role / Timing Role: Primary surge arrestor mounted at RJ-11 jack input, coordinated with GDT or MOV secondary protection. Use Value: Fast <1 ns response and low VC prevent damage to sensitive line drivers and ADC front-ends during Telcordia GR-1089-CORE Level 3 surges. |
Use Scenario: Secondary-side overvoltage suppression on DC output rails of USB-C PD adapters and smart chargers. IC Role / Device Role / Timing Role: Clamp transient spikes caused by hot-plug events or feedback loop instability in synchronous buck regulators. Use Value: Compact SMC footprint enables placement near connector or regulator output, minimizing trace inductance and preserving clamping effectiveness. |
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 | Lower PPPM = 600 W; same VBR, VWM, and SMC-compatible SMB (DO-214AA) package | Not AEC-Q101 qualified; rated only for commercial temperature range (−65 °C to +125 °C) | Select when cost sensitivity outweighs automotive qualification and 1500 W surge headroom is unnecessary |
| 1.5KE22CA | Through-hole DO-201 package; identical electrical specs but incompatible with SMT assembly | Lacks MSL Level 1 rating; unsuitable for lead-free reflow; higher thermal resistance (RθJA ≈ 100 °C/W) | Choose only for legacy through-hole designs or prototyping where board space allows larger footprint |
Compared with SMBJ22CA and 1.5KE22CA, the 1.5SMC22CAHE3_A/H uniquely combines AEC-Q101 qualification, 1500 W surge capability, and SMC surface-mount compatibility - making it the only option among the three qualified for production automotive electronics with automated manufacturing requirements.
Availability
1.5SMC22CAHE3_A/H is available at Aetrix Electronics and suitable for automotive sensor modules, industrial communication interfaces, and telecom line card designs requiring stable component supply, long-term lifecycle support, and AEC-Q101 compliance.
Supply support for 1.5SMC22CAHE3_A/H 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, efficiency, and application-specific optimization.
The 1.5SMC Series was engineered for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom systems where failure due to voltage surges must be eliminated without compromising board-level automation or thermal performance.
FAQ
What does the "CA" suffix indicate in 1.5SMC22CAHE3_A/H?
The "CA" suffix in 1.5SMC22CAHE3_A/H denotes a bidirectional configuration: the device provides symmetrical transient voltage suppression for both positive and negative polarity transients, with identical breakdown and clamping characteristics in either direction. This eliminates the need for polarity-aware placement on PCBs and simplifies protection of AC-coupled or floating signal paths. Unlike unidirectional variants (e.g., 1.5SMC22A), the CA version has no cathode band marking and functions identically regardless of terminal orientation.
Is 1.5SMC22CAHE3_A/H suitable for automotive applications?
Yes, 1.5SMC22CAHE3_A/H is explicitly AEC-Q101 qualified, as confirmed by Vishay's ordering code structure ("HE3" denotes RoHS-compliant and AEC-Q101 qualified). It has undergone stress testing including high-temperature operating life (HTOL), temperature cycling (TC), and unbiased highly accelerated stress test (UHAST) per AEC-Q101 Rev D. This makes 1.5SMC22CAHE3_A/H appropriate for use in engine control units, ADAS sensors, and body electronics where automotive-grade reliability is mandatory.
What is the maximum clamping voltage of 1.5SMC22CAHE3_A/H under surge conditions?
The maximum clamping voltage (VC) of 1.5SMC22CAHE3_A/H is 30.6 V, measured at peak pulse current (IPPM) of 49 A using the standardized 10/1000 µs double-exponential waveform. This value represents the upper limit of voltage seen by downstream circuitry during worst-case transient events and is critical for ensuring protected ICs remain within their absolute maximum ratings. The low clamping ratio (VC/VBR ≈ 1.32) reflects efficient energy diversion with minimal overshoot.
How does the SMC (DO-214AB) package of 1.5SMC22CAHE3_A/H compare to SMB (DO-214AA)?
The SMC (DO-214AB) package used by 1.5SMC22CAHE3_A/H measures 7.75 mm × 6.22 mm × 2.62 mm - larger than the SMB (DO-214AA) package (4.57 mm × 3.94 mm × 2.31 mm) - enabling higher thermal mass and lower thermal resistance (RθJL = 15 °C/W vs. ~20 °C/W for SMB). This directly supports the 1500 W peak pulse rating of 1.5SMC22CAHE3_A/H, whereas SMB-packaged equivalents like SMBJ22CA are limited to 600 W. The SMC footprint also improves mechanical robustness in vibration-prone environments.
Does 1.5SMC22CAHE3_A/H require special PCB layout considerations?
Yes - to preserve its 1500 W surge capability, 1.5SMC22CAHE3_A/H must be mounted on minimum recommended copper pad areas: 0.31" × 0.31" (8.0 mm × 8.0 mm) per terminal, per Vishay's datasheet Fig. 2 derating curve. Short, wide traces (<5 mm) between the device and protected node minimize inductance, while avoiding thermal relief on pads ensures optimal heat dissipation during repetitive surges. Use of internal ground/power planes beneath the SMC footprint further enhances thermal performance and clamping consistency.
1.5SMC22CAHE3_A/H 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/H FAQ
1.How can I place an order for 1.5SMC22CAHE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC22CAHE3_A/H 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/H reliable?
The price and inventory of 1.5SMC22CAHE3_A/H 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/H is usually 5 days.
3.What payment methods are accepted for 1.5SMC22CAHE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC22CAHE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC22CAHE3_A/H?
1.5SMC22CAHE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC22CAHE3_A/H 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/H?
For technical support, including 1.5SMC22CAHE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC22CAHE3_A/H requirements.
6.How does Aetrix verify that 1.5SMC22CAHE3_A/H is sourced from the original manufacturer or authorized distributors?
All 1.5SMC22CAHE3_A/H 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/H meets industry standards.
7.What is the process for return or replacement of 1.5SMC22CAHE3_A/H?
All 1.5SMC22CAHE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC22CAHE3_A/H, 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/H part is unused and in its original packaging.
Return procedure for 1.5SMC22CAHE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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