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Vishay General Semiconductor - Diodes Division 1.5SMC22CAHM3_A/H
- Part No.:
- 1.5SMC22CAHM3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC22CAHM3_A/H.pdf
- Description:
- TVS DIODE 18.8VWM 30.6VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:7,096
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Product details
Overview
1.5SMC22CAHM3_A/H from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode designed for robust overvoltage protection in power and signal lines. 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, making it suitable for automotive sensor interface and industrial I/O line protection.
For engineers reviewing the 1.5SMC22CAHM3_A/H datasheet, 1.5SMC22CAHM3_A/H pinout, 1.5SMC22CAHM3_A/H application, or 1.5SMC22CAHM3_A/H equivalent, this device delivers AEC-Q101 qualification, halogen-free RoHS compliance, low incremental surge resistance, and MSL Level 1 moisture sensitivity - critical for high-reliability automotive and industrial designs requiring repeatable transient suppression without derating.
Technical Context
The 1.5SMC22CAHM3_A/H operates as a bidirectional clamping device with symmetrical avalanche breakdown in both polarities, enabling protection of AC-coupled or differential signal paths without polarity concerns. Its glass-passivated junction ensures stable VBR tolerance (±5%) and fast response time (<1 ns), while the SMC (DO-214AB) package supports automated placement and meets UL 94 V-0 flammability rating.
Thermally, it sustains 150 °C maximum junction temperature with RθJA = 75 °C/W and RθJL = 15 °C/W, and handles non-repetitive 8.3 ms half-sine surge currents up to 200 A (unidirectional only - not applicable here due to bidirectional configuration). The device exhibits a VWM = 18.8 V and ID ≤ 1.0 µA at rated standoff, ensuring minimal leakage in standby.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 20.9 V / 23.1 V at IT = 1.0 mA - defines precise clamping onset threshold under standardized test conditions |
| VWM | 18.8 V - maximum continuous reverse operating voltage before significant leakage begins |
| VC @ IPPM | 30.6 V at 49.0 A - clamped voltage during 1500 W transient, directly limiting stress on downstream ICs |
| PPPM | 1500 W (10/1000 µs waveform) - peak surge energy handling capacity for lightning and inductive switching events |
| ID @ VWM | ≤1.0 µA - ultra-low leakage preserves signal integrity and battery life in always-on circuits |
| TJ max. | +150 °C - enables operation in under-hood automotive and high-temperature industrial environments |
| Package | SMC (DO-214AB) - industry-standard 2-pin surface-mount outline with 8.0 mm × 8.0 mm copper pad thermal requirement |
Pinout & Package
Package: SMC (DO-214AB), molded plastic case with matte tin-plated leads, compliant with J-STD-002 and JESD 22-B102 solderability standards. Bidirectional construction means no polarity marking; both terminals are electrically symmetric.
| 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 functions identically regardless of orientation on PCB |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per JEDEC standards |
| Halogen-free & RoHS-compliant | Meets environmental compliance requirements for modern automotive and industrial supply chains (suffix HM3) |
| 1500 W peak pulse power | Withstands severe transients such as ISO 7637-2 Pulse 5a (load dump) and IEC 61000-4-5 surge events |
| Low clamping ratio (VC/VBR ≈ 1.32) | Minimizes protected circuit voltage overshoot - critical for safeguarding 3.3 V or 5 V logic interfaces |
| MSL Level 1 (260 °C peak) | Enables standard reflow soldering without pre-baking, reducing manufacturing complexity and cost |
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 ESD in engine control units. IC Role / Device Role / Timing Role: Bidirectional clamping TVS placed across differential or single-ended signal lines upstream of the interface IC. Use Value: Limits transient voltage to ≤30.6 V, preventing latch-up or gate oxide damage in 5 V tolerant transceivers while maintaining signal fidelity. |
Use Scenario: Safeguarding digital input modules in programmable logic controllers exposed to inductive kickback from solenoids and relays. IC Role / Device Role / Timing Role: Parallel-connected TVS on 24 V DC input channels to shunt surge energy before reaching optocoupler or MCU GPIO. Use Value: Absorbs 1500 W surges without degradation, enabling >100,000 surge cycles per IEC 61000-4-5 Class 3 compliance. |
| Telecom Line Interface | Consumer Power Adapter Input |
Use Scenario: Shielding Ethernet PHY magnetics and PoE injectors from lightning-induced surges on outdoor cabling. IC Role / Device Role / Timing Role: Primary-level TVS on secondary-side DC lines feeding isolated DC/DC converters. Use Value: Fast <1 ns response captures leading edge of induced surges; bidirectional symmetry avoids polarity-dependent failure modes. |
Use Scenario: Secondary-side overvoltage clamp in USB-C PD adapters and wall chargers after rectification and filtering. IC Role / Device Role / Timing Role: Standoff-rated suppressor across bulk capacitor to prevent overvoltage during AC line transients. Use Value: 18.8 V VWM aligns with 20 V nominal output rails; 30.6 V clamping protects 30 V-rated electrolytics and MOSFETs. |
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 peak power (600 W), same VBR range and SMC-compatible SMB (DO-214AA) package | Not suitable for IEC 61000-4-5 Level 4 or ISO 7637-2 Pulse 5a; limited to lower-energy transients | Select when board space allows smaller SMB footprint and surge requirements are ≤600 W |
| 1.5KE22CA | Through-hole DO-201 package, identical electrical specs but incompatible with SMT assembly | Requires manual or wave soldering; unsuitable for high-density or automated production | Choose only for legacy through-hole designs or prototyping where rework flexibility outweighs automation needs |
Compared with SMBJ22CA and 1.5KE22CA, the 1.5SMC22CAHM3_A/H uniquely combines 1500 W surge capability, AEC-Q101 qualification, halogen-free compliance, and SMC surface-mount compatibility - making it the optimal choice for volume automotive and industrial SMT production where reliability, regulatory alignment, and process efficiency are jointly prioritized.
Availability
1.5SMC22CAHM3_A/H is available at Aetrix Electronics and suitable for automotive ECUs, industrial PLCs, telecom infrastructure, and consumer power adapters requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for 1.5SMC22CAHM3_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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and application-specific performance.
The 1.5SMC Series was engineered specifically for high-power transient suppression in harsh environments, targeting automotive, industrial, and telecom applications where AEC-Q101 qualification, surge robustness, and SMT manufacturability are mandatory.
FAQ
What does the "CA" suffix indicate in 1.5SMC22CAHM3_A/H?
The "CA" suffix in 1.5SMC22CAHM3_A/H denotes a bidirectional configuration, meaning the device provides symmetrical transient suppression for both positive and negative voltage excursions. Unlike unidirectional variants (e.g., 1.5SMC22AHM3_A/H), it has no cathode band marking and functions identically regardless of terminal orientation - essential for protecting AC-coupled or differential signal paths without polarity constraints.
Is 1.5SMC22CAHM3_A/H suitable for automotive applications?
Yes, 1.5SMC22CAHM3_A/H is AEC-Q101 qualified and carries the HM3 suffix indicating halogen-free, RoHS-compliant construction validated for automotive use. It meets stringent requirements for temperature cycling, humidity, and surge immunity, and is explicitly listed in Vishay's automotive ordering codes - making it appropriate for engine control, body electronics, and ADAS sensor interfaces where reliability under thermal and electrical stress is critical.
What is the maximum clamping voltage of 1.5SMC22CAHM3_A/H at its rated peak pulse current?
The maximum clamping voltage (VC) of 1.5SMC22CAHM3_A/H is 30.6 V at its rated peak pulse current (IPPM) of 49.0 A, measured using the standard 10/1000 µs double-exponential waveform. This value represents the upper limit of voltage imposed on protected circuitry during worst-case transient events and is confirmed in Vishay's official datasheet (Document Number: 88303, page 2).
How does the SMC (DO-214AB) package of 1.5SMC22CAHM3_A/H compare thermally to smaller packages like SMB?
The SMC (DO-214AB) package used by 1.5SMC22CAHM3_A/H offers superior thermal performance versus SMB (DO-214AA), with a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W - approximately 30% lower than SMB's ~110 °C/W. This enables higher sustained power dissipation and better reliability under repeated surge conditions, especially when mounted on 8.0 mm × 8.0 mm copper pads as specified in the datasheet.
Does 1.5SMC22CAHM3_A/H require special handling or baking prior to reflow soldering?
No, 1.5SMC22CAHM3_A/H is rated MSL Level 1 per J-STD-020, with a maximum peak reflow temperature of 260 °C. It may be subjected to standard lead-free reflow profiles without pre-baking or dry-pack handling - simplifying SMT assembly and reducing production risk compared to moisture-sensitive devices requiring strict floor-life controls.
1.5SMC22CAHM3_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:
- 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/H FAQ
1.How can I place an order for 1.5SMC22CAHM3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC22CAHM3_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 1.5SMC22CAHM3_A/H reliable?
The price and inventory of 1.5SMC22CAHM3_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 1.5SMC22CAHM3_A/H is usually 5 days.
3.What payment methods are accepted for 1.5SMC22CAHM3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC22CAHM3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC22CAHM3_A/H?
1.5SMC22CAHM3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC22CAHM3_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 1.5SMC22CAHM3_A/H?
For technical support, including 1.5SMC22CAHM3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC22CAHM3_A/H requirements.
6.How does Aetrix verify that 1.5SMC22CAHM3_A/H is sourced from the original manufacturer or authorized distributors?
All 1.5SMC22CAHM3_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 1.5SMC22CAHM3_A/H meets industry standards.
7.What is the process for return or replacement of 1.5SMC22CAHM3_A/H?
All 1.5SMC22CAHM3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC22CAHM3_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 1.5SMC22CAHM3_A/H part is unused and in its original packaging.
Return procedure for 1.5SMC22CAHM3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC22CAHM3_A/H Tags
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