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Vishay General Semiconductor - Diodes Division 1.5SMC22CAHM3_A/I
- Part No.:
- 1.5SMC22CAHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC22CAHM3_A/I.pdf
- Description:
- TVS DIODE 18.8VWM 30.6VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:6,466
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Product details
Overview
1.5SMC22CAHM3_A/I from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) in the SMC (DO-214AB) package, designed for clamping voltage transients on signal or power lines. It features a 22 V breakdown voltage (VBR = 20.9–23.1 V at IT = 1.0 mA), 18.8 V stand-off voltage (VWM), 30.6 V maximum clamping voltage (VC) at 49.0 A peak pulse current, and 1500 W peak pulse power capability with a 10/1000 µs waveform - used to protect MOSFETs, ICs, and sensor signal lines in automotive and industrial systems.
For engineers reviewing the 1.5SMC22CAHM3_A/I datasheet, 1.5SMC22CAHM3_A/I pinout, 1.5SMC22CAHM3_A/I application, or 1.5SMC22CAHM3_A/I equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, thermal resistance (RθJA = 75 °C/W), junction temperature range (–65 to +150 °C), and halogen-free RoHS-compliant construction per JESD201 Class 2 whisker test.
Technical Context
The 1.5SMC22CAHM3_A/I operates as a bidirectional avalanche diode, symmetrically clamping transient overvoltages in both polarities without polarity marking. Its glass-passivated junction ensures stable breakdown behavior and fast response time (<1 ns), while low incremental surge resistance enables effective energy diversion during ESD or lightning-induced surges.
Rated for 1500 W peak pulse power (10/1000 µs), it sustains repetitive transients at 0.01 % duty cycle and derates linearly above TA = 25 °C per Fig. 2. Mounted on 8.0 mm × 8.0 mm copper pads, it achieves RθJL = 15 °C/W and meets MSL Level 1 (260 °C peak reflow).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 20.9 V / 23.1 V at IT = 1.0 mA - defines reliable avalanche initiation threshold under standardized test conditions |
| VWM | 18.8 V - maximum continuous reverse operating voltage before leakage exceeds 1.0 µA |
| VC @ IPPM | 30.6 V at 49.0 A - clamped voltage during 1500 W transient, determining protected circuit's maximum stress level |
| PPPM | 1500 W (10/1000 µs) - peak surge handling capacity for lightning or inductive switching events |
| TJ Range | –65 °C to +150 °C - enables operation in under-hood automotive and industrial ambient environments |
| RθJA | 75 °C/W - thermal resistance from junction to ambient, critical for PCB pad layout and power derating |
| Construction | Halogen-free, RoHS-compliant, AEC-Q101 qualified - meets automotive reliability and environmental compliance requirements |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, bidirectional configuration with no polarity marking. Dimensions: 7.75 mm × 6.22 mm × 2.62 mm (L × W × H), cathode band absent per bidirectional design.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (negative polarity) | One terminal of symmetrical PN junction; conducts during negative transients |
| Cathode | Transient current entry (positive polarity) | Other terminal of symmetrical PN junction; conducts during positive transients |
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 | Supports IEC 61000-4-5 Level 4 (4 kV) surge immunity when properly laid out on PCB |
| Glass-passivated junction | Ensures long-term stability of VBR and low leakage (<1.0 µA at VWM) across temperature and life |
| AEC-Q101 qualification | Validated for automotive applications including engine control units and ADAS sensor interfaces |
| MSL Level 1 (260 °C) | Permits standard lead-free reflow assembly without moisture sensitivity precautions |
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. IC Role / Device Role / Timing Role: Bidirectional TVS placed at connector interface to clamp transients before reaching signal conditioning circuitry. Use Value: Maintains signal integrity by limiting voltage to ≤30.6 V during 49 A surges, preventing latch-up or gate oxide damage in downstream ICs. |
Use Scenario: Safeguarding 24 V DC digital input modules in programmable logic controllers against field-wiring induced surges. IC Role / Device Role / Timing Role: Primary transient suppressor on input terminals, coordinated with series impedance for IEC 61000-4-4/5 compliance. Use Value: Withstands repetitive 1500 W transients at 0.01 % duty cycle, enabling robust operation in factory-floor electromagnetic environments. |
| Telecom Line Interface | Consumer Power Adapter Output |
Use Scenario: Shielding Ethernet PHY or RS-485 transceivers from ESD and lightning-induced common-mode surges on outdoor cabling. IC Role / Device Role / Timing Role: Bidirectional clamping device placed differential-to-ground to suppress mode conversion transients. Use Value: Low clamping voltage (30.6 V) prevents exceedance of transceiver absolute maximum ratings during 10/1000 µs surges. |
Use Scenario: Secondary-side overvoltage suppression in AC/DC adapters for USB-C PD or smart home devices. IC Role / Device Role / Timing Role: Final-stage protector on 5–20 V output rails, absorbing residual switching spikes and ESD events. Use Value: Halogen-free, RoHS-compliant construction meets global regulatory requirements for consumer end-products. |
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 power (600 W), smaller SMB (DO-214AA) package, same VBR range and bidirectional configuration | Suitable for space-constrained consumer electronics where 1500 W surge margin is not required | Select when board area is limited and surge threat level is ≤IEC 61000-4-5 Level 2 |
| 1.5KE22CA | Through-hole TO-204AE (DO-15) package, identical electrical specs but higher RθJA (~100 °C/W), no AEC-Q101 qualification | Used in legacy industrial power supplies where manual assembly or high-reliability through-hole mounting is preferred | Choose only if SMT assembly is unavailable or mechanical robustness outweighs thermal performance |
Compared with SMBJ22CA and 1.5KE22CA, the 1.5SMC22CAHM3_A/I uniquely combines 1500 W surge capability, AEC-Q101 qualification, halogen-free compliance, and SMC footprint - making it the optimal choice for new automotive and high-reliability industrial designs requiring surface-mount scalability and full regulatory alignment.
Availability
1.5SMC22CAHM3_A/I is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, telecom line protection, and consumer power adapter outputs requiring stable component supply, long-lifecycle support, and AEC-Q101 assurance.
Supply support for 1.5SMC22CAHM3_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, and protection devices with emphasis on reliability, efficiency, and application-specific validation.
The 1.5SMC Series was engineered for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where robustness, AEC-Q101 compliance, and consistent clamping performance are mandatory.
FAQ
What does the "CA" suffix indicate in 1.5SMC22CAHM3_A/I?
The "CA" suffix in 1.5SMC22CAHM3_A/I denotes a bidirectional configuration - meaning the device clamps transient voltages symmetrically in both polarities, with no cathode marking. This distinguishes it from unidirectional variants (e.g., 1.5SMC22AHM3_A/I) and enables use on AC-coupled or floating lines without polarity concerns. The 1.5SMC22CAHM3_A/I maintains identical VBR, VWM, and VC specifications in both directions per Vishay documentation.
Is 1.5SMC22CAHM3_A/I qualified for automotive applications?
Yes, 1.5SMC22CAHM3_A/I is AEC-Q101 qualified, as confirmed by its HM3 suffix and documentation stating "AEC-Q101 qualified available" with ordering code base P/NHM3_X. It is specifically rated for automotive use in engine compartments, ADAS sensors, and infotainment interfaces, supporting operating junction temperatures from –65 °C to +150 °C and passing stress tests including temperature cycling, humidity bias, and mechanical shock.
What is the maximum clamping voltage of 1.5SMC22CAHM3_A/I and under what condition is it specified?
The maximum clamping voltage of 1.5SMC22CAHM3_A/I is 30.6 V, measured at IPPM = 49.0 A using a 10/1000 µs double-exponential surge waveform. This value represents the peak voltage seen across the device during worst-case transient events and directly determines the maximum stress imposed on downstream components - critical for ensuring ICs and MOSFETs remain within their absolute maximum voltage ratings.
How does the SMC (DO-214AB) package of 1.5SMC22CAHM3_A/I compare thermally to smaller packages like SMB?
The SMC (DO-214AB) package of 1.5SMC22CAHM3_A/I provides lower thermal resistance than SMB: RθJA = 75 °C/W (vs. ~100–120 °C/W for SMBJ), enabling higher sustained power dissipation. When mounted on 8.0 mm × 8.0 mm copper pads, it achieves superior heat spreading - essential for maintaining junction temperature below 150 °C during repetitive 1500 W transients, unlike smaller packages that require larger external heatsinking or derating.
Does 1.5SMC22CAHM3_A/I meet RoHS and halogen-free requirements?
Yes, 1.5SMC22CAHM3_A/I is both RoHS-compliant and halogen-free, as indicated by the "HM3" suffix per Vishay's ordering nomenclature. It satisfies JEDEC J-STD-020 MSL Level 1 reflow profile (260 °C peak), passes JESD201 Class 2 whisker testing, and uses molding compound meeting UL 94 V-0 flammability rating - fulfilling environmental and safety mandates for automotive, industrial, and consumer end-equipment globally.
1.5SMC22CAHM3_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:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
1.5SMC22CAHM3_A/I FAQ
1.How can I place an order for 1.5SMC22CAHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC22CAHM3_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 1.5SMC22CAHM3_A/I reliable?
The price and inventory of 1.5SMC22CAHM3_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 1.5SMC22CAHM3_A/I is usually 5 days.
3.What payment methods are accepted for 1.5SMC22CAHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC22CAHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC22CAHM3_A/I?
1.5SMC22CAHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC22CAHM3_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 1.5SMC22CAHM3_A/I?
For technical support, including 1.5SMC22CAHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC22CAHM3_A/I requirements.
6.How does Aetrix verify that 1.5SMC22CAHM3_A/I is sourced from the original manufacturer or authorized distributors?
All 1.5SMC22CAHM3_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 1.5SMC22CAHM3_A/I meets industry standards.
7.What is the process for return or replacement of 1.5SMC22CAHM3_A/I?
All 1.5SMC22CAHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC22CAHM3_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 1.5SMC22CAHM3_A/I part is unused and in its original packaging.
Return procedure for 1.5SMC22CAHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC22CAHM3_A/I Tags
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DESD3V3E1BL-7B
Diodes Incorporated
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Diodes Incorporated
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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