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Vishay General Semiconductor - Diodes Division 1.5SMC220CAHM3/I
- Part No.:
- 1.5SMC220CAHM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC220CAHM3/I.pdf
- Description:
- TVS DIODE 185VWM 328VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:9,143
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Product details
Overview
1.5SMC220CAHM3/I from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode designed for high-energy surge protection in power and signal lines. It delivers 1500 W peak pulse power (10/1000 μs), clamps at 328 V max under 4.6 A peak pulse current, and features a 185 V stand-off voltage (VWM) with ±5% tolerance - deployed in automotive sensor interfaces, industrial I/O protection, and telecom line cards.
For engineers reviewing the 1.5SMC220CAHM3/I datasheet, 1.5SMC220CAHM3/I pinout, 1.5SMC220CAHM3/I application, or 1.5SMC220CAHM3/I equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, SMC (DO-214AB) package compatibility, and thermal performance under repetitive surge duty cycles.
Technical Context
The 1.5SMC220CAHM3/I operates as a bidirectional avalanche diode, symmetrically clamping voltage transients above ±209 V (min) and ±231 V (max) breakdown (VBR at 1 mA), with low incremental surge resistance ensuring stable clamping during fast-rising ESD or lightning-induced surges. Its glass-passivated junction enables robust reliability across -65 °C to +150 °C operating range.
Designed for surface-mount assembly on 8.0 mm × 8.0 mm copper pads, it meets MSL Level 1 per J-STD-020 (peak reflow 260 °C), supports automated placement, and achieves <100 ns response time. The halogen-free, RoHS-compliant HM3 suffix confirms AEC-Q101 qualification for automotive-grade deployment.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 185 V - Maximum continuous reverse voltage before clamping begins; defines safe operating margin below breakdown. |
| VBR (Breakdown) | 209–231 V at 1 mA - Symmetric avalanche threshold in both directions; ensures consistent overvoltage triggering. |
| VC (Clamping) | 328 V at IPPM = 4.6 A - Peak voltage seen by protected circuit during 10/1000 μs surge; determines downstream component stress. |
| PPPM | 1500 W - Energy-handling capacity for standardized 10/1000 μs waveform; validates suitability for IEC 61000-4-5 Level 4 surges. |
| TJ max. | +150 °C - Maximum junction temperature; enables operation in under-hood automotive environments and industrial enclosures. |
| RθJA | 75 °C/W - Thermal resistance junction-to-ambient on recommended pad layout; informs heatsinking requirements for sustained power dissipation. |
| AEC-Q101 | Qualified - Validated for automotive electronics per stress-test standard; required for ECUs, ADAS sensors, and infotainment power rails. |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, bidirectional device with no polarity marking - symmetrical cathode/anode terminals.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Surge return path (bidirectional) | Connects to protected line or ground reference; identical electrical behavior to cathode due to symmetry. |
| Cathode | Surge return path (bidirectional) | Functionally interchangeable with anode; no band marking distinguishes terminals in CA devices. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC lines, differential buses (e.g., RS-485), and floating sensor inputs without polarity concerns. |
| 1500 W peak pulse power | Withstands 4.6 A @ 10/1000 μs surge - exceeds IEC 61000-4-5 Level 4 (4 kV/2 Ω) requirements for industrial and automotive ports. |
| AEC-Q101 qualified (HM3) | Validated for automotive use including temperature cycling, HTRB, and mechanical shock - supports Tier-1 ECU designs. |
| Halogen-free & RoHS-compliant | Meets EU Directive 2011/65/EU and JEDEC J-STD-203; eliminates brominated flame retardants in molding compound. |
| MSL Level 1 rating | Allows unlimited floor life and single-reflow processing at 260 °C peak - simplifies manufacturing for high-volume SMT lines. |
Applications
| Automotive Sensor Protection | Industrial RS-485 Interface |
|---|---|
Use Scenario: Protecting CAN/LIN bus nodes and analog sensor outputs (e.g., pressure, temperature) from load-dump and ISO 7637-2 transients. IC Role / Device Role / Timing Role: Bidirectional TVS placed across signal pair or supply rail to clamp surges before reaching MCU or analog front-end. Use Value: Maintains signal integrity during 12 V/24 V system transients up to ±100 V, leveraging 185 V VWM margin and 328 V VC to prevent latch-up. |
Use Scenario: Safeguarding full-duplex RS-485 transceivers in factory automation PLCs against EFT and surge coupling on long cable runs. IC Role / Device Role / Timing Role: Differential-line TVS connected between A/B lines and ground to suppress common-mode surges without distorting data timing. Use Value: Sub-100 ns response ensures clamping occurs before transceiver input stages are damaged; 1500 W rating handles multi-kV line surges. |
| Telecom DSL Line Card | Consumer Power Adapter Input |
Use Scenario: Shielding ADSL/VDSL line interface ICs from lightning-induced surges entering via outdoor copper pairs. IC Role / Device Role / Timing Role: Primary surge arrestor mounted at connector entry point, shunting energy to chassis ground before conditioning circuitry. Use Value: 328 V clamping voltage aligns with 250 VAC RMS + safety margin, enabling compliance with ITU-T K.20/21 immunity standards. |
Use Scenario: Secondary-side overvoltage suppression in universal-input AC/DC adapters after rectification and bulk capacitor. IC Role / Device Role / Timing Role: Bidirectional clamp across DC output rails to absorb reflected switching spikes and external surges. Use Value: Halogen-free HM3 construction satisfies IEC 62368-1 flammability and environmental requirements for end-user power supplies. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ220CA | Lower PPPM (600 W), same VWM (185 V), SMB package (smaller footprint, higher RθJA = 110 °C/W) | Limited to lower-energy surges (IEC 61000-4-5 Level 2); unsuitable for automotive load-dump where 1500 W is mandated. | Select when board space is constrained and surge threat level is ≤600 W - verify thermal derating at 100% duty cycle. |
| 1.5KE220CA | Same 1500 W rating and VWM, but axial DO-15 package - not SMT-compatible, higher inductance, no AEC-Q101 qualification. | Restricted to through-hole prototyping or legacy industrial designs; incompatible with automated SMT assembly and automotive PPAP. | Choose only for manual assembly or cost-sensitive non-automotive applications where SMT is unavailable. |
Compared with SMBJ220CA and 1.5KE220CA, the 1.5SMC220CAHM3/I uniquely combines AEC-Q101 qualification, SMC surface-mount compatibility, and full 1500 W surge handling - making it the sole option for production automotive modules requiring zero PCB redesign and validated reliability.
Availability
1.5SMC220CAHM3/I is available at Aetrix Electronics and suitable for automotive ECU protection, industrial communication interfaces, and telecom line card surge suppression requiring stable component supply across extended product lifecycles.
Supply support for 1.5SMC220CAHM3/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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and application-specific performance.
The 1.5SMC Series targets high-reliability transient suppression in automotive, industrial, and telecom infrastructure - engineered for robustness under repetitive surge stress and stringent environmental qualification.
FAQ
What is the clamping voltage of the 1.5SMC220CAHM3/I under maximum rated surge current?
The 1.5SMC220CAHM3/I exhibits a maximum clamping voltage (VC) of 328 V when subjected to its peak pulse current (IPPM) of 4.6 A under the standardized 10/1000 μs waveform. This value is measured per Figure 1 in Vishay's 88303 datasheet and defines the upper voltage limit imposed on protected circuitry during worst-case surge events. The 1.5SMC220CAHM3/I maintains this clamping performance across its full operating temperature range (-65 °C to +150 °C), with minimal drift due to its low temperature coefficient of VBR (0.108 %/°C).
Is the 1.5SMC220CAHM3/I suitable for automotive applications?
Yes, the 1.5SMC220CAHM3/I is explicitly AEC-Q101 qualified, as confirmed by its HM3 suffix and documentation in Vishay's 1.5SMC series datasheet (Rev. 09-Mar-2026). It undergoes stress testing for high-temperature reverse bias, temperature cycling, and mechanical shock - meeting requirements for engine control units, body electronics, and ADAS sensor modules. The 1.5SMC220CAHM3/I also complies with MSL Level 1 and halogen-free standards, supporting automotive PPAP and environmental compliance workflows.
How does the bidirectional design of the 1.5SMC220CAHM3/I affect its circuit implementation?
The 1.5SMC220CAHM3/I has no polarity marking and functions identically in both directions, allowing direct placement across AC-coupled lines, differential signal pairs (e.g., RS-485 A/B), or floating power rails without orientation concerns. Unlike unidirectional TVS diodes, the 1.5SMC220CAHM3/I provides symmetrical clamping above ±209 V, eliminating the need for dual-diode configurations. Its DO-214AB package terminals are electrically interchangeable - simplifying layout and reducing BOM count in balanced protection schemes.
What is the thermal resistance and power dissipation capability of the 1.5SMC220CAHM3/I?
The 1.5SMC220CAHM3/I 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, and a steady-state power dissipation (PD) rating of 6.5 W at TA = 50 °C. These values define its ability to handle repetitive surges without thermal runaway: for example, at 1 W average dissipation, junction temperature rise remains within safe limits even at 70 °C ambient. The 1.5SMC220CAHM3/I's RθJL of 15 °C/W further supports efficient heat transfer to PCB copper planes.
Does the 1.5SMC220CAHM3/I require additional external components for effective surge protection?
No, the 1.5SMC220CAHM3/I operates as a standalone surge protection device and requires no series impedance or parallel filtering to meet its rated 1500 W pulse capability - provided it is mounted per Vishay's recommended pad layout (0.31" × 0.31" copper areas per terminal). However, for optimal high-frequency ESD suppression (<1 ns), pairing the 1.5SMC220CAHM3/I with a low-capacitance TVS or ferrite bead may be advised in RF-sensitive applications. The 1.5SMC220CAHM3/I itself contributes negligible capacitance (<100 pF at 0 V), avoiding signal integrity issues on data lines.
1.5SMC220CAHM3/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:
- Discontinued at Digi-Key
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 185V
- Voltage - Breakdown (Min):
- 209V
- Voltage - Clamping (Max) @ Ipp:
- 328V
- Current - Peak Pulse (10/1000µs):
- 4.6A
- 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)
1.5SMC220CAHM3/I FAQ
1.How can I place an order for 1.5SMC220CAHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC220CAHM3/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 1.5SMC220CAHM3/I reliable?
The price and inventory of 1.5SMC220CAHM3/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC220CAHM3/I is usually 5 days.
3.What payment methods are accepted for 1.5SMC220CAHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC220CAHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC220CAHM3/I?
1.5SMC220CAHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC220CAHM3/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 1.5SMC220CAHM3/I?
For technical support, including 1.5SMC220CAHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC220CAHM3/I requirements.
6.How does Aetrix verify that 1.5SMC220CAHM3/I is sourced from the original manufacturer or authorized distributors?
All 1.5SMC220CAHM3/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 1.5SMC220CAHM3/I meets industry standards.
7.What is the process for return or replacement of 1.5SMC220CAHM3/I?
All 1.5SMC220CAHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC220CAHM3/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 1.5SMC220CAHM3/I part is unused and in its original packaging.
Return procedure for 1.5SMC220CAHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC220CAHM3/I Tags
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