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Vishay General Semiconductor - Diodes Division 1.5SMC220CAHM3_A/I
- Part No.:
- 1.5SMC220CAHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC220CAHM3_A/I.pdf
- Description:
- TVS DIODE 185VWM 328VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:9,645
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Product details
Overview
1.5SMC220CAHM3_A/I 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 capability with a 10/1000 μs waveform - deployed in automotive sensor interfaces and industrial I/O protection.
For engineers reviewing the 1.5SMC220CAHM3_A/I datasheet, 1.5SMC220CAHM3_A/I pinout, 1.5SMC220CAHM3_A/I application, or 1.5SMC220CAHM3_A/I equivalent, key selection criteria include bidirectional clamping symmetry, AEC-Q101 qualification status, 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: under normal conditions it presents high impedance (>1 MΩ leakage at 185 V), then rapidly switches to low-impedance conduction when transients exceed VBR, diverting surge current away from downstream circuitry. Its glass-passivated junction ensures stable avalanche characteristics and repeatable clamping behavior across temperature.
The 1.5SMC220CAHM3_A/I is rated for -65 °C to +150 °C operating junction temperature, with thermal resistance of 75 °C/W (junction-to-ambient) and 15 °C/W (junction-to-leads), enabling reliable operation on standard 8 mm × 8 mm copper pads without forced cooling in automotive under-hood environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 185 V - Maximum continuous reverse voltage before significant leakage; defines safe operating window for 24 V–48 V DC bus protection. |
| VBR (Breakdown) | 209–231 V at 1 mA - Confirmed avalanche initiation range; ensures predictable turn-on during fast transients like ISO 7637-2 Pulse 1/2a. |
| VC (Clamping) | 328 V at IPPM = 4.6 A - Peak voltage seen by protected IC during 10/1000 μs surge; enables robust MOSFET gate or MCU I/O survival. |
| PPPM | 1500 W - Sustains single 10/1000 μs surges up to this energy level; meets IEC 61000-4-5 Level 4 (4 kV) when properly laid out. |
| Package | SMC (DO-214AB) - Standardized 7.11 mm × 6.22 mm surface-mount outline with matte tin leads; supports automated placement and J-STD-020 MSL level 1 reflow. |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD per AEC-Q101 Rev G; suffix HM3 denotes halogen-free RoHS-compliant version. |
| Leakage (ID) | <1 μA at 185 V - Negligible standby power loss; critical for always-on battery-powered sensor nodes. |
Pinout & Package
Package: SMC (DO-214AB), bidirectional device - no polarity marking; symmetrical terminal configuration with cathode/anode interchangeable in circuit layout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Surge return path (bidirectional) | Connects to protected line; conducts during positive or negative transients relative to reference plane. |
| Cathode | Surge return path (bidirectional) | Electrically identical to Anode; device functions identically regardless of orientation in PCB layout. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Equal VBR and VC in both polarities - eliminates need for orientation-aware layout in AC-coupled or floating signal paths. |
| 1500 W peak pulse rating | Withstands 10/1000 μs surges up to 4.6 A - exceeds IEC 61000-4-5 Ed. 3 requirements for industrial equipment ports. |
| AEC-Q101 qualified (HM3) | Validated for automotive under-hood use - includes HTOL, TC, and ESD testing per AEC-Q101 Rev G for engine control modules. |
| Low incremental surge resistance | Ensures minimal voltage overshoot during fast-rising transients (<1 ns rise time) - protects sensitive analog front-ends and CAN transceivers. |
| UL 497B recognized | Approved for telecom and data line protection - enables direct use in PoE-powered devices and Ethernet PHY interfaces. |
Applications
| Automotive Sensor Interface | Industrial PLC Analog Input |
|---|---|
Use Scenario: Protecting LIN/CAN node transceivers and Hall-effect sensor outputs from load dump and inductive switching noise in 12 V/24 V vehicle subsystems. IC Role / Device Role / Timing Role: Shunt TVS placed between signal line and chassis ground, clamping transients within 1 ns to prevent latch-up or gate oxide damage. Use Value: Enables compliance with ISO 16750-2 (load dump) and ISO 7637-2 (Pulse 1/2a/5a) without derating or parallel staging. |
Use Scenario: Safeguarding 4–20 mA current loop inputs in programmable logic controllers against field-wiring faults and lightning-induced surges. IC Role / Device Role / Timing Role: Bidirectional clamp across input terminals, absorbing ±1 kV/500 A surges while maintaining <1 μA leakage at 24 VDC supply. Use Value: Eliminates need for external series resistors or gas discharge tubes, reducing BOM count and board space in DIN-rail mounted I/O modules. |
| Telecom Power over Ethernet | Consumer Appliance Motor Control |
Use Scenario: Surge suppression on PoE (IEEE 802.3af/at) data pairs and auxiliary power lines in IP cameras and VoIP phones. IC Role / Device Role / Timing Role: Bidirectional TVS integrated into magnetics module layout, clamping common-mode transients induced by nearby AC wiring or ESD events. Use Value: Meets UL 497B recognition for telecom protectors and supports full 30 W PoE+ delivery without derating due to thermal accumulation. |
Use Scenario: Protecting microcontroller GPIOs and gate drivers in smart washing machine motor inverters exposed to brush-commutator noise and relay bounce. IC Role / Device Role / Timing Role: Localized clamp at MCU input pins and half-bridge driver enable lines, limiting transient voltage to <330 V during 100 ns spikes. Use Value: Prevents firmware lockup and false triggering in BLDC motor control loops, improving field failure rate below 5 FIT over 10-year lifetime. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ220CA | Same VWM/VBR/VC specs but lower PPPM (400 W); SMA package (smaller footprint, higher RθJA = 110 °C/W). | Limited to lower-energy surges (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 rating is unnecessary and thermal margin is adequate. |
| 1.5KE220CA | Through-hole TO-204AA (DO-41); identical electrical specs but larger size and manual assembly requirement. | Used in legacy industrial controls and repair kits; lacks AEC-Q101 qualification and MSL level 1 reflow compatibility. | Choose for prototyping or low-volume repairs where SMT automation is unavailable; not recommended for new automotive designs. |
Compared with SMAJ220CA and 1.5KE220CA, the 1.5SMC220CAHM3_A/I delivers automotive-grade reliability in an automated SMT package with superior thermal dissipation and full 1500 W surge handling - making it the optimal choice for production-grade automotive and industrial systems requiring zero rework risk and long-term supply continuity.
Availability
1.5SMC220CAHM3_A/I is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC analog inputs, telecom PoE endpoints, and appliance motor control systems requiring stable component supply, AEC-Q101 traceability, and halogen-free RoHS compliance.
Supply support for 1.5SMC220CAHM3_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, MOSFETs, optoelectronics, and passive components with emphasis on high-reliability and automotive-grade solutions.
The 1.5SMC Series is engineered for robust transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where sustained surge immunity and long-term parametric stability are mandatory.
FAQ
What is the clamping voltage of the 1.5SMC220CAHM3_A/I under a 10/1000 μs surge?
The 1.5SMC220CAHM3_A/I has a maximum clamping voltage (VC) of 328 V at a peak pulse current (IPPM) of 4.6 A with a 10/1000 μs waveform. This value is measured per Figure 1 in the Vishay datasheet 88303 and represents the upper limit of voltage imposed on protected circuitry during standardized surge events - critical for ensuring downstream ICs like CAN transceivers or op-amps remain within absolute maximum ratings.
Is the 1.5SMC220CAHM3_A/I suitable for automotive applications?
Yes, the 1.5SMC220CAHM3_A/I is AEC-Q101 qualified (suffix HM3 denotes halogen-free, RoHS-compliant, and automotive-grade validation), tested for temperature cycling, high-temperature reverse bias, and ESD per AEC-Q101 Rev G. It is explicitly designed for automotive sensor interfaces, body control modules, and infotainment power rails where compliance with ISO 16750-2 and ISO 7637-2 is required - confirmed in Vishay's ordering information table and qualification summary.
What does the "CA" suffix mean in 1.5SMC220CAHM3_A/I?
The "CA" suffix in 1.5SMC220CAHM3_A/I indicates a bidirectional Transient Voltage Suppressor - meaning it provides symmetrical clamping for both positive and negative transients without polarity sensitivity. As stated in the Vishay document, "For bidirectional devices use CA suffix (e.g. 1.5SMC220CA)" and "Electrical characteristics apply in both directions", eliminating orientation constraints during PCB layout and enabling use in AC-coupled or floating signal paths.
How does the SMC (DO-214AB) package of the 1.5SMC220CAHM3_A/I compare thermally to smaller packages?
The SMC (DO-214AB) package of the 1.5SMC220CAHM3_A/I offers a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W - significantly lower than SMA (110 °C/W) or SOD-123 (200 °C/W) alternatives. This allows sustained 1500 W surge handling on standard 8 mm × 8 mm copper pads without thermal runaway, making it suitable for under-hood automotive environments where ambient temperatures reach 125 °C and airflow is restricted.
Does the 1.5SMC220CAHM3_A/I meet UL safety standards?
Yes, the 1.5SMC220CAHM3_A/I is Underwriters Laboratories (UL) recognized under standard UL 497B for protectors, with file number E136766 covering both unidirectional and bidirectional devices. This certification confirms suitability for telecom line protection, PoE applications, and industrial control systems requiring third-party safety validation - explicitly noted in the Vishay datasheet footnote (+) and mechanical data section.
1.5SMC220CAHM3_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):
- 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_A/I FAQ
1.How can I place an order for 1.5SMC220CAHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC220CAHM3_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 1.5SMC220CAHM3_A/I reliable?
The price and inventory of 1.5SMC220CAHM3_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 1.5SMC220CAHM3_A/I is usually 5 days.
3.What payment methods are accepted for 1.5SMC220CAHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC220CAHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC220CAHM3_A/I?
1.5SMC220CAHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC220CAHM3_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 1.5SMC220CAHM3_A/I?
For technical support, including 1.5SMC220CAHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC220CAHM3_A/I requirements.
6.How does Aetrix verify that 1.5SMC220CAHM3_A/I is sourced from the original manufacturer or authorized distributors?
All 1.5SMC220CAHM3_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 1.5SMC220CAHM3_A/I meets industry standards.
7.What is the process for return or replacement of 1.5SMC220CAHM3_A/I?
All 1.5SMC220CAHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC220CAHM3_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 1.5SMC220CAHM3_A/I part is unused and in its original packaging.
Return procedure for 1.5SMC220CAHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC220CAHM3_A/I Tags
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