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Vishay General Semiconductor - Diodes Division 1.5SMC220AHM3/H
- Part No.:
- 1.5SMC220AHM3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC220AHM3/H.pdf
- Description:
- TVS DIODE 185VWM 328VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:2,176
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Product details
Overview
1.5SMC220AHM3/H from Vishay General Semiconductor is a unidirectional 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 under 4.6 A peak pulse current, and features a 185 V stand-off voltage with <1 μA reverse leakage at rated VWM. It is used to protect automotive sensor interfaces and industrial I/O circuits against lightning-induced transients and inductive switching spikes.
For engineers reviewing the 1.5SMC220AHM3/H datasheet, 1.5SMC220AHM3/H pinout, 1.5SMC220AHM3/H application, or 1.5SMC220AHM3/H equivalent, key selection criteria include its AEC-Q101 qualification, SMC (DO-214AB) package compatibility, unidirectional polarity with cathode band marking, and thermal resistance of 75 °C/W junction-to-ambient - all critical for automotive-grade board-level ESD and surge resilience.
Technical Context
This TVS diode operates as a voltage-clamping device that enters avalanche breakdown when transient voltage exceeds its breakdown threshold (209–231 V at 1 mA). Its low incremental surge resistance and fast response time (<1 ns) enable effective suppression of sub-microsecond transients without affecting normal circuit operation.
The device is rated for repetitive 10/1000 μs surges at 0.01% duty cycle and supports peak forward surge current up to 200 A (8.3 ms half-sine), making it suitable for both DC power rail and AC-coupled signal line protection where sustained energy dissipation must be managed via PCB copper pad layout per JEDEC standards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power (10/1000 μs) | 1500 W - sustains single high-energy surges common in automotive load-dump and lightning test profiles (IEC 61000-4-5 Level 4). |
| Stand-off Voltage (VWM) | 185 V - maximum continuous reverse operating voltage before significant leakage; sets upper limit for protected circuit's nominal DC bus. |
| Breakdown Voltage (VBR) | 209–231 V at 1 mA - defines precise avalanche onset; ensures reliable triggering above system overvoltage thresholds. |
| Clamping Voltage (VC) | 328 V at 4.6 A IPPM - actual voltage seen by downstream ICs during surge; determines required voltage margin for protected devices. |
| Reverse Leakage (ID) | <1 μA at 185 V - negligible standby power loss and no measurable impact on high-impedance sensor bias networks. |
| Junction Temperature Range | −65 °C to +150 °C - enables deployment in under-hood automotive environments and industrial enclosures without derating. |
| Package | SMC (DO-214AB) - surface-mount outline with 8.0 mm × 8.0 mm copper pads per terminal for optimal thermal dissipation and JEDEC-compliant reflow. |
Pinout & Package
Package: SMC (DO-214AB), molded plastic case with matte tin-plated leads, UL 94 V-0 rated, MSL Level 1 (260 °C peak reflow).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | High-side connection in unidirectional configuration | Connected to protected line (e.g., 24 V supply rail); avalanche conduction occurs from cathode to anode during overvoltage. |
| Anode | Low-side reference / ground return | Tied to system ground or low-impedance return path; establishes clamping reference and completes surge current path. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units and ADAS sensor modules per stress test requirements. |
| 1500 W peak pulse rating | Meets IEC 61000-4-5 surge immunity requirements for industrial and automotive equipment without external heat sinking. |
| Glass passivated junction | Ensures stable VBR over lifetime and resistance to humidity-induced parameter drift in harsh environmental conditions. |
| Halogen-free & RoHS-compliant (HM3 suffix) | Complies with EU Directive 2011/65/EU and automotive material restrictions (e.g., JASPAR, ELV). |
| Low incremental surge resistance | Minimizes clamping voltage overshoot during fast-rising transients (e.g., EFT bursts), improving protection fidelity. |
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 ISO 7637-2 pulses in vehicle ECUs. IC Role / Device Role / Timing Role: Unidirectional clamping element placed between sensor supply line and chassis ground to shunt surge energy before reaching front-end amplifiers or ADCs. Use Value: Limits transient voltage to ≤328 V, preserving signal integrity and preventing latch-up or permanent damage to 5 V or 3.3 V interface ICs. |
Use Scenario: Safeguarding digital input modules in programmable logic controllers exposed to inductive kickback from solenoids, contactors, and motor drives. IC Role / Device Role / Timing Role: Standoff protector on 24 V DC input channels, absorbing repetitive 1 kV/500 A surges per IEC 61000-4-4 and -4-5. Use Value: Enables >100,000 surge cycles without degradation due to robust glass-passivated junction and 1500 W pulse handling. |
| Telecom Power Supply Protection | Consumer Appliance Motor Control |
Use Scenario: Secondary-side overvoltage suppression in AC/DC adapters and PoE-powered equipment subjected to lightning-induced surges on DC output rails. IC Role / Device Role / Timing Role: Final-stage clamp on +48 V or +24 V distribution lines, coordinated with upstream MOVs and fuses for staged protection. Use Value: Fast response (<1 ns) prevents voltage overshoot from propagating to isolated DC/DC converters and Ethernet PHYs. |
Use Scenario: Protecting microcontroller GPIOs and gate drivers in washing machine or HVAC fan motor control boards from back-EMF spikes. IC Role / Device Role / Timing Role: Localized TVS on motor driver supply pins and H-bridge feedback lines to prevent false triggering or latch-up. Use Value: Withstands 200 A 8.3 ms surge current, enabling direct placement adjacent to MOSFETs without series impedance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ220A | Same VWM (185 V) and VC (328 V), but lower PPPM (600 W) and smaller SMB package (DO-214AA). | Limited to lower-energy transients; unsuitable for IEC 61000-4-5 Level 4 or automotive load dump. | Select only when space-constrained and surge energy is ≤600 W; requires PCB layout revision due to different pad footprint. |
| 1.5KE220A | Through-hole TO-204AA (DO-41) package; identical electrical specs but higher RθJA (100 °C/W vs. 75 °C/W). | Not suitable for automated SMT assembly; thermal performance degrades faster under repeated surges without heatsinking. | Choose only for legacy through-hole designs or prototyping; not recommended for volume automotive or industrial production. |
Compared with SMBJ220A and 1.5KE220A, the 1.5SMC220AHM3/H provides superior surge energy handling in a surface-mount AEC-Q101-qualified package, enabling compact, high-reliability protection for automotive and industrial systems where board space, thermal management, and qualification compliance are non-negotiable.
Availability
1.5SMC220AHM3/H is available at Aetrix Electronics and suitable for automotive ECU design, industrial PLC development, and telecom power supply projects requiring stable component supply, halogen-free compliance, and long-term lifecycle support.
Supply support for 1.5SMC220AHM3/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, and protection devices with emphasis on reliability, automotive qualification, and high-power handling.
The 1.5SMC Series was developed specifically for robust, surface-mount transient suppression in demanding environments - targeting automotive, industrial, and telecom applications where AEC-Q101 compliance and 1500 W surge capability are mandatory.
FAQ
What is the clamping voltage of the 1.5SMC220AHM3/H under maximum rated surge current?
The 1.5SMC220AHM3/H clamps at 328 V when subjected to its specified peak pulse current of 4.6 A (10/1000 μs waveform). This value is measured and guaranteed per Vishay's datasheet (Document Number: 88303, Rev. 09-Mar-2026) and represents the maximum voltage imposed on protected circuitry during a full-rated transient event. Designers must ensure downstream components have sufficient voltage margin above this clamping level.
Is the 1.5SMC220AHM3/H suitable for bidirectional signal line protection?
No - the 1.5SMC220AHM3/H is a unidirectional TVS diode, indicated by the "A" suffix and cathode band marking. For bidirectional protection (e.g., RS-485, USB, or AC-coupled lines), Vishay specifies the "CA" variant (e.g., 1.5SMC220CA). Using the 1.5SMC220AHM3/H on bidirectional lines would result in forward conduction during negative transients, potentially damaging the device or circuit.
Does the HM3 suffix on 1.5SMC220AHM3/H indicate AEC-Q101 qualification?
Yes - the "HM3" suffix denotes halogen-free, RoHS-compliant construction and AEC-Q101 qualification per Vishay's ordering nomenclature (Document Number: 88303, page 3, Note 1). This certification covers stress tests including HTGB, HTRB, TCT, and ESD, confirming suitability for automotive under-hood and body electronics applications.
What is the thermal resistance of the 1.5SMC220AHM3/H, and how does it affect layout?
The 1.5SMC220AHM3/H 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. To maintain safe junction temperatures during repetitive surges, PCB layout must replicate this minimum pad area and use internal ground/power planes for heat spreading. Reduced copper area increases RθJA and risks thermal runaway.
Can the 1.5SMC220AHM3/H replace older 1.5KE220A parts in existing designs?
Electrically, yes - the 1.5SMC220AHM3/H matches the 1.5KE220A's VWM (185 V), VBR (209–231 V), and VC (328 V). However, it uses an SMC (DO-214AB) surface-mount package versus the through-hole DO-41 of the 1.5KE220A. Direct replacement requires PCB redesign for SMT pads and reflow profile adaptation; it is not a drop-in mechanical substitute.
1.5SMC220AHM3/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:
- 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/H FAQ
1.How can I place an order for 1.5SMC220AHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC220AHM3/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 1.5SMC220AHM3/H reliable?
The price and inventory of 1.5SMC220AHM3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC220AHM3/H is usually 5 days.
3.What payment methods are accepted for 1.5SMC220AHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC220AHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC220AHM3/H?
1.5SMC220AHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC220AHM3/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 1.5SMC220AHM3/H?
For technical support, including 1.5SMC220AHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC220AHM3/H requirements.
6.How does Aetrix verify that 1.5SMC220AHM3/H is sourced from the original manufacturer or authorized distributors?
All 1.5SMC220AHM3/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 1.5SMC220AHM3/H meets industry standards.
7.What is the process for return or replacement of 1.5SMC220AHM3/H?
All 1.5SMC220AHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC220AHM3/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 1.5SMC220AHM3/H part is unused and in its original packaging.
Return procedure for 1.5SMC220AHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC220AHM3/H Tags
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