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Vishay General Semiconductor - Diodes Division SM6T220AHM3_B/H
- Part No.:
- SM6T220AHM3_B/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SM6T220AHM3_B/H.pdf
- Description:
- 600W,220V 5%,UNIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:2,529
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Product details
Overview
SM6T220AHM3_B/H from Vishay General Semiconductor is a unidirectional surface-mount TRANSZORB® transient voltage suppressor in SMB (DO-214AA) package, with 220 V breakdown voltage (VBR), 328 V maximum clamping voltage (VC) at 2.0 A IPPM, 600 W peak pulse power (10/1000 μs), and AEC-Q101 qualification for automotive-grade surge protection on power rails and sensor interfaces.
For engineers reviewing the SM6T220AHM3_B/H datasheet, SM6T220AHM3_B/H pinout, SM6T220AHM3_B/H application, or SM6T220AHM3_B/H equivalent, key selection criteria include clamping performance under 10/1000 μs transients, thermal resistance (RθJA = 100 °C/W), unidirectional polarity marking, halogen-free RoHS compliance, and AEC-Q101 qualification status.
Technical Context
This TVS diode operates as a unidirectional clamping device, leveraging a glass-passivated silicon junction to deliver fast response (<1 ns) to ESD and lightning-induced transients. Its 220 V VBR (min/max 209–231 V at 1.0 mA) and 328 V VC at 2.0 A ensure robust overvoltage protection while maintaining low leakage (<1.0 μA at 188 V VWM) and low inductance for high-speed suppression.
The SMB package enables automated placement and meets MSL level 1 (260 °C reflow peak). With TJ range of –65 °C to +150 °C and RθJL = 20 °C/W, it supports reliable operation in under-hood automotive environments and industrial power supplies where thermal management is constrained.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 209 V / 231 V at 1.0 mA - defines precise clamping onset threshold for predictable overvoltage response |
| VWM | 188 V - maximum continuous reverse operating voltage before leakage rises significantly |
| VC @ IPPM | 328 V at 2.0 A (10/1000 μs) - peak clamped voltage seen by protected circuit during surge |
| PPPM | 600 W - peak transient power handling capability under standardized 10/1000 μs waveform |
| IFSM | 100 A - surge current rating for 10 ms half-sine wave, critical for inductive load switching events |
| TJ Range | –65 °C to +150 °C - enables deployment in automotive engine compartments and industrial enclosures |
| RθJA | 100 °C/W - thermal resistance from junction to ambient, informs PCB pad layout and heatsinking needs |
Pinout & Package
SMB (DO-214AA) surface-mount package with cathode band marking on one end; matte tin-plated leads compliant with J-STD-002 and JESD 22-B102 solderability standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink | Accepts surge current during reverse-biased clamping; connects to protected line |
| Anode (unbanded end) | Reference/ground return | Completes clamping path to ground or lower-potential rail; polarity-critical for unidirectional operation |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including powertrain and ADAS sensor protection per stress test requirements |
| Halogen-free & RoHS-compliant | Meets environmental compliance mandates for global OEM supply chains without compromising electrical performance |
| 600 W peak pulse power | Withstands high-energy transients from load dump or inductive kickback without degradation |
| Low inductance SMB package | Minimizes voltage overshoot during fast-rising transients (e.g., ESD >1 kV), improving protection fidelity |
| MSL Level 1 moisture sensitivity | Allows standard SMT reflow without baking, reducing manufacturing complexity and cost |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 24 V CAN/LIN bus power inputs against ISO 7637-2 load dump pulses up to 120 V. IC Role / Device Role / Timing Role: Unidirectional clamping TVS placed between VBAT and ground to clamp surges before they reach DC-DC converters or microcontrollers. Use Value: Clamps to 328 V at 2.0 A, limiting downstream voltage stress while surviving repeated 600 W transients per AEC-Q101 stress profile. | Use Scenario: Safeguarding analog output lines of pressure/temperature sensors in factory automation PLC modules. IC Role / Device Role / Timing Role: Transient suppressor on 4–20 mA loop outputs exposed to relay switching noise and EFT bursts. Use Value: Low leakage (<1 μA at 188 V) prevents signal drift; 100 °C/W RθJA allows stable operation on compact sensor PCBs. |
| Telecom AC/DC Adapter Input Protection | Consumer Appliance Motor Drive Protection |
Use Scenario: Secondary-side overvoltage suppression on 12–48 V outputs of isolated flyback adapters used in VoIP phones and base stations. IC Role / Device Role / Timing Role: Standoff-rated TVS across output rails to absorb coupling transients from primary-side MOSFET switching or lightning-induced surges. Use Value: 188 V VWM ensures no conduction during normal regulation; 328 V VC protects downstream LDOs and PMICs. | Use Scenario: Suppressing back-EMF spikes from brushed DC motors in smart home appliances (e.g., vacuum cleaners, washing machines). IC Role / Device Role / Timing Role: Unidirectional TVS across motor terminals or H-bridge outputs to clamp inductive kickback. Use Value: 100 A IFSM handles repetitive 10 ms surges; halogen-free construction satisfies appliance safety certifications. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ220A | Same VBR (209–231 V), but 400 W PPPM, SMA package (higher RθJA = 140 °C/W) | Limited to lower-energy transients; less suitable for automotive load dump | Select when cost sensitivity outweighs peak power requirement and board space permits larger thermal pads |
| 1.5SMC220A | Same VBR, 1500 W PPPM, SMC package (larger footprint, RθJA = 60 °C/W) | Overqualified for most SMB-restricted layouts; higher mounting height | Choose only when system-level testing requires >600 W margin or legacy SMC footprint compatibility is mandatory |
Compared with SMAJ220A and 1.5SMC220A, SM6T220AHM3_B/H delivers optimal balance of AEC-Q101 qualification, 600 W capability in compact SMB, and halogen-free compliance-making it the preferred choice for space-constrained, automotive-grade, and environmentally regulated designs.
Availability
SM6T220AHM3_B/H is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface hardening, telecom adapter secondary-side clamping, and consumer appliance motor drive surge suppression requiring stable component supply and full traceability.
Supply support for SM6T220AHM3_B/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 reliability, efficiency, and application-specific validation.
The SM6T Series is designed specifically for high-reliability transient suppression in automotive, industrial, and telecom systems-delivering AEC-Q101-qualified, halogen-free TVS solutions in compact SMB packages with tightly controlled clamping parameters.
FAQ
What is the breakdown voltage tolerance for SM6T220AHM3_B/H?
The SM6T220AHM3_B/H has a specified breakdown voltage (VBR) range of 209 V to 231 V at 1.0 mA test current, representing ±5% tolerance around the nominal 220 V rating. This tight distribution ensures consistent clamping behavior across production lots and supports reliable design margining in automotive and industrial surge protection circuits.
Is SM6T220AHM3_B/H suitable for bidirectional transient protection?
No, SM6T220AHM3_B/H is a unidirectional TVS diode, indicated by the "A" suffix and cathode band marking. For bidirectional protection, Vishay offers the SM6T220CA variant (with "CA" suffix); using SM6T220AHM3_B/H in bidirectional applications would result in forward conduction during negative transients and potential failure.
Does SM6T220AHM3_B/H require derating at elevated ambient temperatures?
Yes, SM6T220AHM3_B/H must be derated above TA = 25 °C per Figure 2 in the datasheet. At 85 °C ambient, its peak pulse power drops to approximately 420 W (70% of 600 W), and at 125 °C, it falls to ~240 W. Designers must apply this derating curve when sizing for under-hood or enclosed industrial environments.
What does the "HM3_B/H" suffix indicate in SM6T220AHM3_B/H?
The "HM3" denotes halogen-free, RoHS-compliant construction with AEC-Q101 qualification; "B/H" specifies packaging in 7″ diameter tape-and-reel (H code) with revision B. This suffix confirms compliance with automotive environmental and reliability standards, distinguishing it from commercial-grade "E3" or non-automotive "M3" variants.
Can SM6T220AHM3_B/H be used in place of SM6T220A-E3/52?
SM6T220AHM3_B/H is not a direct drop-in replacement for SM6T220A-E3/52 due to differences in qualification and material content: HM3 is AEC-Q101 qualified and halogen-free, while E3 is commercial-grade and RoHS-compliant only. Electrical specs match, but automotive or high-reliability applications require HM3's validated stress performance and material compliance.
SM6T220AHM3_B/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- SM6T, TransZorb®
- Packaging:
- Bulk
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 188V
- Voltage - Breakdown (Min):
- 209V
- Voltage - Clamping (Max) @ Ipp:
- 328V
- Current - Peak Pulse (10/1000µs):
- 2A
- Power - Peak Pulse:
- 600W
- 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-214AA (SMB)
SM6T220AHM3_B/H FAQ
1.How can I place an order for SM6T220AHM3_B/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SM6T220AHM3_B/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 SM6T220AHM3_B/H reliable?
The price and inventory of SM6T220AHM3_B/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM6T220AHM3_B/H is usually 5 days.
3.What payment methods are accepted for SM6T220AHM3_B/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM6T220AHM3_B/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM6T220AHM3_B/H?
SM6T220AHM3_B/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM6T220AHM3_B/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 SM6T220AHM3_B/H?
For technical support, including SM6T220AHM3_B/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM6T220AHM3_B/H requirements.
6.How does Aetrix verify that SM6T220AHM3_B/H is sourced from the original manufacturer or authorized distributors?
All SM6T220AHM3_B/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 SM6T220AHM3_B/H meets industry standards.
7.What is the process for return or replacement of SM6T220AHM3_B/H?
All SM6T220AHM3_B/H units undergo pre-shipment inspection (PSI). If there is an issue with SM6T220AHM3_B/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 SM6T220AHM3_B/H part is unused and in its original packaging.
Return procedure for SM6T220AHM3_B/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM6T220AHM3_B/H Tags
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