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Vishay General Semiconductor - Diodes Division 1.5SMC220CAHM3/H
- Part No.:
- 1.5SMC220CAHM3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC220CAHM3/H.pdf
- Description:
- TVS DIODE 185VWM 328VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:6,604
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Product details
Overview
1.5SMC220CAHM3/H from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode designed for high-energy surge protection in power and signal lines. It features a 220 V standoff voltage (VWM), 231 V minimum breakdown voltage (VBR), 328 V maximum clamping voltage (VC) at 4.6 A peak pulse current, and 1500 W peak pulse power rating with 10/1000 μs waveform - deployed in automotive sensor interfaces and industrial I/O protection.
For engineers reviewing the 1.5SMC220CAHM3/H datasheet, 1.5SMC220CAHM3/H pinout, 1.5SMC220CAHM3/H application, or 1.5SMC220CAHM3/H equivalent, key selection criteria include bidirectional clamping symmetry, AEC-Q101 qualification, SMC (DO-214AB) package thermal performance, and compliance with UL 497B for telecom and automotive transient immunity standards.
Technical Context
This device operates as a voltage-clamped shunt protector: during transients exceeding VWM (220 V), it avalanches symmetrically in both directions to limit voltage across protected circuitry. Its glass-passivated junction ensures stable breakdown and low leakage (<1 μA at VWM), while MSL Level 1 rating supports lead-free reflow up to 260 °C.
The 1.5SMC220CAHM3/H delivers repeatable 1500 W surge handling under 0.01% duty cycle conditions when mounted on 8.0 mm × 8.0 mm copper pads. Its 75 °C/W junction-to-ambient thermal resistance and 150 °C max junction temperature enable reliable operation in automotive under-hood and industrial control environments without active cooling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 220 V - Maximum continuous reverse voltage before clamping begins; defines operating margin for 24 V–48 V DC bus protection. |
| VBR (Breakdown) | 209–231 V at 1 mA - Confirmed avalanche onset range; ensures predictable turn-on within ±5% tolerance for system-level ESD/Lightning design margins. |
| VC (Clamping) | 328 V at IPPM = 4.6 A - Peak voltage seen by downstream ICs during 10/1000 μs surge; enables safe interface with 300 V-rated MOSFETs or isolated gate drivers. |
| PPPM | 1500 W - Peak pulse power handling per single 10/1000 μs transient; meets IEC 61000-4-5 Level 4 (4 kV) requirements when properly laid out. |
| TJ max | +150 °C - Maximum junction temperature; supports under-hood automotive use and industrial ambient temperatures up to +105 °C with derating. |
| Package | SMC (DO-214AB) - Standardized 2-pin surface-mount outline with 7.75 mm × 6.22 mm footprint and 2.62 mm height; compatible with automated pick-and-place and IPC-7351B land patterns. |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including HTOL, TCT, and ESD testing; required for engine control, ADAS sensor, and body electronics applications. |
Pinout & Package
Package: SMC (DO-214AB), bidirectional - no polarity marking; symmetrical two-terminal construction with cathode/anode terminals interchangeable in circuit layout.
| 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 - enables placement flexibility in AC-coupled or floating signal paths. |
| Terminal 2 | Anode / Cathode (bidirectional) | Electrically identical to Terminal 1; forms symmetrical clamping path - eliminates need for orientation-aware routing in PCB layout. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC lines, differential buses (e.g., CAN, RS-485), and ungrounded sensor outputs without polarity constraints. |
| 1500 W peak pulse power | Supports IEC 61000-4-5 surge immunity up to 4 kV (line-earth) in properly decoupled systems - reduces need for cascaded protection stages. |
| Halogen-free & RoHS-compliant (HM3) | Fulfills EU RoHS Directive 2011/65/EU and JEDEC J-STD-203 material requirements for green manufacturing and end-of-life recycling. |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and standard reflow profile (peak 260 °C) without baking - simplifies SMT production planning and reduces assembly cost. |
| UL 497B recognition (QVGQ2) | Validated for telecom and industrial surge protector classification - accelerates safety certification for equipment sold in North America. |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
|
Use Scenario: Protecting LIN/CAN transceiver inputs and analog sensor outputs (e.g., pressure, temperature) from load-dump and ISO 7637-2 pulses in vehicle ECUs. IC Role / Device Role / Timing Role: Shunt TVS placed directly at connector entry point to clamp transients before reaching signal conditioning ICs or microcontroller GPIOs. Use Value: Prevents latch-up or permanent damage to 5 V/3.3 V interface ICs during 12 V/24 V system surges - maintains functional safety integrity per ISO 26262 ASIL-B requirements. |
Use Scenario: Safeguarding 24 V digital input modules in programmable logic controllers against field-wiring induced surges and relay coil flyback. IC Role / Device Role / Timing Role: Primary overvoltage clamp on dry-contact or PNP/NPN input channels, positioned upstream of optocoupler or Schmitt-trigger input stage. Use Value: Extends mean time between failures (MTBF) of I/O modules in factory automation by absorbing >1000 surges at 1500 W without parameter shift - reduces maintenance downtime. |
| Telecom Line Interface Protection | Power Supply Input Clamping |
|
Use Scenario: Shielding Ethernet PHY magnetics secondary side and PoE-powered device front-ends from lightning-induced common-mode transients on twisted-pair lines. IC Role / Device Role / Timing Role: Bidirectional TVS bridging differential pair (e.g., TX+/TX−) to chassis ground, providing symmetric clamping without signal distortion. Use Value: Maintains signal integrity below 100 MHz while meeting GR-1089-CORE Level 3 (10 kV) surge immunity - avoids data corruption in managed switches and base stations. |
Use Scenario: Clamping input-stage transients on 24 V/48 V DC-DC converter front-ends exposed to battery jump-start events or alternator load dump. IC Role / Device Role / Timing Role: First-line shunt suppressor across bulk input capacitor, limiting voltage overshoot before primary-side MOSFET or controller IC. Use Value: Limits input rail excursion to ≤328 V during 100 V/100 ms load-dump pulses - prevents overvoltage shutdown or gate oxide rupture in power semiconductors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bidirectional TVS protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ220CA | Same VWM/VBR/VC ratings but lower PPPM (400 W); SMA package (smaller footprint, higher RθJA = 110 °C/W). | Limited to lower-energy transients (IEC 61000-4-5 Level 2); unsuitable for automotive load-dump or industrial 4 kV testing. | Select only for space-constrained consumer electronics where 1500 W capability is unnecessary and thermal budget allows higher junction rise. |
| 1.5KE220CA | Through-hole TO-218 package; identical electrical specs but slower response due to higher parasitic inductance (~1.5 nH vs. <0.5 nH for SMC). | Not suitable for high-frequency surge waveforms (>100 kHz content); incompatible with automated SMT assembly. | Choose only for legacy through-hole designs or prototyping where reworkability outweighs performance and manufacturability trade-offs. |
Compared with SMAJ220CA and 1.5KE220CA, the 1.5SMC220CAHM3/H uniquely combines AEC-Q101 qualification, SMC package manufacturability, and full 1500 W surge capacity - making it the only option qualified for production automotive and industrial SMT applications requiring both reliability and high-energy clamping.
Availability
1.5SMC220CAHM3/H is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, telecom line protection, and DC-DC converter input clamping requiring stable component supply across multi-year production cycles.
Supply support for 1.5SMC220CAHM3/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 high-reliability, high-power, and automotive-qualified components.
The 1.5SMC Series was engineered specifically for robust, surface-mount transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where AEC-Q101 compliance, high pulse power, and automated assembly are mandatory.
FAQ
What is the clamping voltage of the 1.5SMC220CAHM3/H under a 10/1000 μs surge?
The 1.5SMC220CAHM3/H has a maximum clamping voltage (VC) of 328 V at a peak pulse current (IPPM) of 4.6 A under the standardized 10/1000 μs waveform. This value is measured per Figure 1 in Vishay document 88303 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 1.5SMC220CAHM3/H suitable for automotive applications?
Yes, the 1.5SMC220CAHM3/H is AEC-Q101 qualified and carries the HM3 suffix indicating halogen-free, RoHS-compliant, and automotive-grade construction. It is explicitly rated for under-hood and body electronics use, including engine control units, ADAS sensors, and infotainment power rails - validated for HTOL, temperature cycling, and ESD per AEC-Q101 Rev D requirements.
What does the "CA" suffix indicate in 1.5SMC220CAHM3/H?
The "CA" suffix in 1.5SMC220CAHM3/H denotes a bidirectional configuration - meaning the device provides symmetrical transient suppression in both forward and reverse directions. Unlike unidirectional variants (e.g., 1.5SMC220AHM3/H), it has no polarity marking and is used where AC signals, differential buses, or floating grounds require equal clamping regardless of voltage polarity.
What is the thermal resistance of the 1.5SMC220CAHM3/H?
The 1.5SMC220CAHM3/H 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 pad per terminal. This value assumes free-air convection and is essential for calculating junction temperature rise under continuous power dissipation - particularly relevant for high-duty-cycle surge environments or elevated ambient temperatures.
Does the 1.5SMC220CAHM3/H meet UL safety standards?
Yes, the 1.5SMC220CAHM3/H is UL recognized under file E136766 for both unidirectional and bidirectional configurations, compliant with UL 497B for protectors used in telecommunications and industrial equipment. This certification covers dielectric withstand, flammability (UL 94 V-0), and surge endurance - enabling faster regulatory approval for end products sold in North America.
1.5SMC220CAHM3/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:
- 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/H FAQ
1.How can I place an order for 1.5SMC220CAHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC220CAHM3/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 1.5SMC220CAHM3/H reliable?
The price and inventory of 1.5SMC220CAHM3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC220CAHM3/H is usually 5 days.
3.What payment methods are accepted for 1.5SMC220CAHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC220CAHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC220CAHM3/H?
1.5SMC220CAHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC220CAHM3/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 1.5SMC220CAHM3/H?
For technical support, including 1.5SMC220CAHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC220CAHM3/H requirements.
6.How does Aetrix verify that 1.5SMC220CAHM3/H is sourced from the original manufacturer or authorized distributors?
All 1.5SMC220CAHM3/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 1.5SMC220CAHM3/H meets industry standards.
7.What is the process for return or replacement of 1.5SMC220CAHM3/H?
All 1.5SMC220CAHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC220CAHM3/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 1.5SMC220CAHM3/H part is unused and in its original packaging.
Return procedure for 1.5SMC220CAHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC220CAHM3/H Tags
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