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Vishay General Semiconductor - Diodes Division 1.5SMC220AHM3/I
- Part No.:
- 1.5SMC220AHM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC220AHM3/I.pdf
- Description:
- TVS DIODE 185VWM 328VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:4,627
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Product details
Overview
1.5SMC220AHM3/I from Vishay General Semiconductor is a unidirectional surface-mount 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 transients up to 328 V at 4.6 A, and features a 185 V stand-off voltage (VWM) with 209–231 V breakdown (VBR) at 1 mA - deployed in automotive power supply rails and industrial sensor interfaces.
For engineers reviewing the 1.5SMC220AHM3/I datasheet, 1.5SMC220AHM3/I pinout, 1.5SMC220AHM3/I application, or 1.5SMC220AHM3/I equivalent, key selection criteria include its unidirectional polarity, SMC (DO-214AB) package thermal resistance (RθJA = 75 °C/W), AEC-Q101 qualification, halogen-free RoHS compliance, and 150 °C maximum junction temperature.
Technical Context
This TVS diode operates as a clamping device that diverts transient energy away from sensitive downstream circuitry by entering avalanche breakdown when reverse voltage exceeds VBR. Its glass-passivated junction ensures stable leakage (<1 μA at VWM) and fast response time (<1.0 ns), critical for protecting MOSFET gates and microcontroller I/O against ESD and lightning-induced surges.
The 1.5SMC220AHM3/I is rated for 200 A non-repetitive forward surge current (8.3 ms half-sine), supports automated SMT placement, and meets J-STD-020 MSL Level 1 with 260 °C reflow peak. Its cathode-band marking enables unambiguous polarity identification on PCBs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 185 V - maximum continuous reverse operating voltage before clamping begins; defines safe DC/AC working margin. |
| VBR min/max | 209 V / 231 V at 1 mA - precise breakdown threshold ensuring predictable turn-on during overvoltage events. |
| VC @ IPPM | 328 V at 4.6 A - clamping voltage under full 1500 W surge; determines maximum stress imposed on protected ICs. |
| PPPM | 1500 W - peak pulse power handling capability with 10/1000 μs waveform; validates robustness against IEC 61000-4-5 surges. |
| TJ max | +150 °C - maximum junction temperature enabling operation in under-hood automotive environments. |
| RθJA | 75 °C/W - thermal resistance from junction to ambient; informs heatsinking requirements on standard 8 mm × 8 mm copper pads. |
| Package | SMC (DO-214AB) - industry-standard surface-mount outline with 0.320" length and matte tin-plated leads per J-STD-002. |
Pinout & Package
Package: SMC (DO-214AB), molded epoxy case meeting UL 94 V-0 flammability rating; terminals are matte tin plated, solderable per J-STD-002 and JESD 22-B102; polarity indicated by cathode band on unidirectional devices.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / reverse surge return path | Connected to protected line ground or low-side reference; completes conduction path during avalanche. |
| Cathode | Avalanche voltage reference / clamping node | Connected to the line being protected; voltage referenced to anode during transient suppression. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive powertrain and body electronics per stress test requirements including HTOL, TCT, and ESD. |
| Halogen-free & RoHS-compliant | Meets JEDEC J-STD-20 and EU RoHS Directive 2011/65/EU; eliminates brominated flame retardants for safer end-of-life processing. |
| 1500 W peak pulse power | Withstands IEC 61000-4-5 Level 4 (4 kV) surges without degradation when mounted on 8 mm × 8 mm copper pads. |
| Low incremental surge resistance | Minimizes clamping voltage overshoot during fast-rising transients (e.g., ISO 7637-2 pulse 1/2a), improving system immunity. |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and standard reflow profile (peak 260 °C), eliminating bake requirements prior to assembly. |
Applications
| Automotive Power Supply Protection | Industrial Sensor Signal Line Protection |
|---|---|
|
Use Scenario: Protecting 12 V/24 V battery-fed ECUs from load dump and alternator transients per ISO 7637-2. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and chassis ground to clamp spikes above 185 V. Use Value: Limits voltage seen by downstream LDOs and MCUs to ≤328 V during 100 ms load dump events, preventing latch-up or gate oxide rupture. |
Use Scenario: Shielding analog outputs of pressure/temperature sensors in factory automation PLC modules. IC Role / Device Role / Timing Role: TVS connected across differential signal pair (e.g., 4–20 mA loop) to suppress EFT bursts. Use Value: Maintains signal integrity by clamping sub-100 ns ESD events to <330 V while adding <1 pF capacitance at 0 V bias. |
| Telecom DC Power Input Protection | Consumer Appliance Motor Drive Protection |
|
Use Scenario: Safeguarding PoE-powered switches and base stations against lightning-induced surges on -48 V DC inputs. IC Role / Device Role / Timing Role: Primary clamping device upstream of DC-DC converters in telecom rectifier modules. Use Value: Absorbs 1500 W surge energy without failure, preserving converter FETs and feedback circuitry during outdoor installation surges. |
Use Scenario: Suppressing inductive kickback from brushed DC motors in smart home appliances (e.g., vacuum cleaners). IC Role / Device Role / Timing Role: Mounted across motor terminals to divert back-EMF spikes into the power rail. Use Value: Prevents MCU reset or communication dropout by limiting flyback voltage to 328 V during abrupt motor shutdown. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ220A | Same VWM (185 V), lower PPPM (400 W), SMA package (smaller footprint, higher RθJA = 110 °C/W) | Limited to lower-energy surges (IEC 61000-4-2 only); unsuitable for ISO 7637-2 load dump. | Select when space-constrained and surge threat level is limited to ESD/EFT, not lightning or load dump. |
| 1.5KE220A | Through-hole TO-204AE (DO-41), identical electrical specs but no AEC-Q101 qualification or halogen-free status | Requires wave soldering or hand assembly; not suitable for fully automated SMT lines or automotive PPAP. | Choose only for legacy through-hole designs or cost-sensitive non-automotive applications where reflow compatibility is irrelevant. |
Compared with SMAJ220A and 1.5KE220A, the 1.5SMC220AHM3/I uniquely combines AEC-Q101 qualification, halogen-free compliance, SMT compatibility, and full 1500 W surge rating - making it the sole option for new automotive and industrial SMT designs requiring certified reliability and high-energy clamping.
Availability
1.5SMC220AHM3/I is available at Aetrix Electronics and suitable for automotive control units, industrial sensor interfaces, and telecom power supplies requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for 1.5SMC220AHM3/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, power efficiency, and automotive-grade validation.
The 1.5SMC Series was engineered specifically for high-power transient suppression in harsh environments - targeting automotive, industrial, and telecom systems where sustained surge immunity and AEC-Q101 compliance are mandatory.
FAQ
What is the clamping voltage of the 1.5SMC220AHM3/I under maximum surge conditions?
The 1.5SMC220AHM3/I clamps to 328 V at its peak pulse current of 4.6 A (10/1000 μs waveform). This value is measured per Figure 1 in the Vishay datasheet 88303 and represents the maximum voltage imposed on protected circuitry during a full 1500 W transient event - critical for verifying margin against downstream IC absolute maximum ratings.
Is the 1.5SMC220AHM3/I suitable for automotive applications?
Yes, the 1.5SMC220AHM3/I is AEC-Q101 qualified (as indicated by the "HM3" suffix) and rated for operation from −65 °C to +150 °C. It is explicitly validated for automotive power supply protection, including ISO 7637-2 load dump and ISO 16750-2 supply voltage variation testing - making it appropriate for engine control, body electronics, and ADAS modules.
What does the "HM3" suffix mean in 1.5SMC220AHM3/I?
The "HM3" suffix denotes halogen-free, RoHS-compliant construction with AEC-Q101 qualification. The "H" indicates halogen-free molding compound; "M3" confirms RoHS compliance and JESD201 Class 2 whisker resistance; and the "I" specifies 3500-unit tape-and-reel packaging on 13-inch reels - all defined in Vishay's ordering information table on page 3 of document 88303.
How does the 1.5SMC220AHM3/I differ from bidirectional variants like 1.5SMC220CA?
The 1.5SMC220AHM3/I is unidirectional and features a cathode band for polarity identification, while 1.5SMC220CA is bidirectional with no polarity marking. Electrically, the unidirectional version supports forward surge current (200 A) and has asymmetric IV characteristics; the bidirectional type provides symmetrical clamping in both directions but lacks forward conduction capability - choice depends on circuit topology and surge directionality.
What is the thermal resistance and recommended pad layout for the 1.5SMC220AHM3/I?
The 1.5SMC220AHM3/I has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal, as specified in Figure 2 of datasheet 88303. Deviation from this pad size increases thermal impedance and reduces surge endurance - design must follow Vishay's recommended SMC (DO-214AB) mounting footprint.
1.5SMC220AHM3/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:
- 1
- Bidirectional Channels:
- -
- 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)
1.5SMC220AHM3/I FAQ
1.How can I place an order for 1.5SMC220AHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC220AHM3/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 1.5SMC220AHM3/I reliable?
The price and inventory of 1.5SMC220AHM3/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC220AHM3/I is usually 5 days.
3.What payment methods are accepted for 1.5SMC220AHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC220AHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC220AHM3/I?
1.5SMC220AHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC220AHM3/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 1.5SMC220AHM3/I?
For technical support, including 1.5SMC220AHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC220AHM3/I requirements.
6.How does Aetrix verify that 1.5SMC220AHM3/I is sourced from the original manufacturer or authorized distributors?
All 1.5SMC220AHM3/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 1.5SMC220AHM3/I meets industry standards.
7.What is the process for return or replacement of 1.5SMC220AHM3/I?
All 1.5SMC220AHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC220AHM3/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 1.5SMC220AHM3/I part is unused and in its original packaging.
Return procedure for 1.5SMC220AHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC220AHM3/I Tags
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