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Vishay General Semiconductor - Diodes Division SM6T220AHM3_A/H
- Part No.:
- SM6T220AHM3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SM6T220AHM3_A/H.pdf
- Description:
- TVS DIODE 188VWM 328VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:7,785
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Product details
Overview
SM6T220AHM3_A/H from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, rated for 220 V breakdown voltage (VBR), 328 V maximum clamping voltage (VC) at 2.0 A peak pulse current, and 600 W peak pulse power with 10/1000 μs waveform. It provides robust ESD and surge protection for automotive-grade sensor signal lines and MOSFET gate drivers.
For engineers reviewing the SM6T220AHM3_A/H datasheet, SM6T220AHM3_A/H pinout, SM6T220AHM3_A/H application, or SM6T220AHM3_A/H equivalent, key selection criteria include its AEC-Q101 qualification, halogen-free RoHS-compliant construction, 188 V stand-off voltage (VWM), low 1.0 μA reverse leakage at VWM, and thermal resistance of 100 °C/W junction-to-ambient.
Technical Context
This TVS diode operates as a unidirectional clamping device with cathode-band polarity marking, designed to shunt transient energy away from sensitive downstream circuitry during inductive switching events or lightning-induced surges. Its glass-passivated junction ensures stable breakdown characteristics and long-term reliability under repetitive stress.
The SM6T220AHM3_A/H delivers precise voltage limiting with a tight VBR tolerance (209–231 V at 1.0 mA test current), clamps transients to ≤328 V at 2.0 A (10/1000 μs), and maintains ≤1.0 μA reverse leakage at 188 V stand-off - enabling use in high-impedance analog sensing paths without signal degradation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 209 V / 231 V at 1.0 mA - defines reliable turn-on threshold for overvoltage clamping |
| 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 - surge energy handling capacity per single transient event |
| ID @ VWM | ≤1.0 μA - minimal loading on high-impedance signal paths during normal operation |
| TJ max. | +150 °C - enables deployment in under-hood automotive environments |
| RθJA | 100 °C/W - thermal performance baseline for PCB pad layout design |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, halogen-free, RoHS-compliant, AEC-Q101 qualified. Cathode indicated by molded band on body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current return path | Connected to system ground or low-impedance reference plane during clamping |
| Cathode | Transient current input node | Connected to protected line (e.g., sensor output, MOSFET gate); band-marked end |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control, ADAS sensors, and body electronics |
| Halogen-free & RoHS-compliant | Meets global environmental compliance requirements without compromising surge robustness |
| 600 W peak pulse power (10/1000 μs) | Handles ISO 7637-2 Pulse 1/2a/3a and IEC 61000-4-5 Level 3 surges without failure |
| Low 1.0 μA leakage at VWM | Preserves accuracy in precision analog front-ends and battery-powered sensor nodes |
| MSL Level 1 (260 °C peak reflow) | Compatible with standard lead-free SMT assembly processes without moisture sensitivity concerns |
Applications
| Automotive Sensor Protection | Industrial Motor Drive Gate Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus-connected temperature, pressure, and position sensors in engine compartments exposed to load dump and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between sensor output and microcontroller input to limit transients to safe levels. Use Value: Prevents latch-up or permanent damage to 3.3 V/5 V ADC inputs while maintaining <1.0 μA leakage at 188 V stand-off. | Use Scenario: Safeguarding high-side and low-side gate drivers in 48 V industrial BLDC motor inverters subject to inductive kickback. IC Role / Device Role / Timing Role: Transient suppressor across gate-source terminals of SiC MOSFETs to clamp dv/dt-induced spikes. Use Value: Limits gate voltage overshoot to ≤328 V during 2.0 A surge, preserving driver IC integrity and preventing false turn-on. |
| Telecom Line Interface Protection | Power Supply Input Surge Suppression |
Use Scenario: Shielding Ethernet PHY interface circuits (e.g., PoE injectors) from induced surges on twisted-pair cabling. IC Role / Device Role / Timing Role: Primary-level TVS on differential data lines upstream of common-mode chokes and isolation transformers. Use Value: Clamps common-mode transients to 328 V within 1 ns response time, meeting IEC 61000-4-5 2 kV/10/700 μs immunity requirements. | Use Scenario: Secondary-side overvoltage suppression on 24 V DC input rails feeding PLC I/O modules in factory automation systems. IC Role / Device Role / Timing Role: Standoff-rated TVS placed after bulk filter capacitors to absorb residual switching transients and lightning-induced surges. Use Value: Withstands 600 W pulses without degradation, ensuring >100,000 surge cycles per MIL-STD-883H Method 3015.8. |
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-Q | Same VBR range (209–231 V), but SMA package (higher RθJA = 140 °C/W), non-AEC-Q101 | Limited to commercial-grade industrial use; not qualified for automotive under-hood deployment | Select when cost sensitivity outweighs AEC-Q101 requirement and thermal margin permits higher junction rise |
| 1.5SMC220A | Same electrical specs, but larger SMC (DO-214AB) package (RθJA = 65 °C/W), higher weight (0.29 g vs. 0.106 g) | Better thermal performance but incompatible with dense SMB footprints; requires PCB redesign | Choose when sustained surge duty cycle demands lower thermal resistance and board space allows larger footprint |
Compared with SMAJ220A-Q and 1.5SMC220A, SM6T220AHM3_A/H uniquely combines AEC-Q101 qualification, SMB footprint compatibility, halogen-free compliance, and verified 600 W surge capability - making it the preferred choice for space-constrained automotive and industrial designs requiring zero-rework validation.
Availability
SM6T220AHM3_A/H is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial motor drive gate protection, and telecom line interface circuits requiring stable component supply and full traceability.
Supply support for SM6T220AHM3_A/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, TVS devices, and optoelectronics with emphasis on reliability and application-specific performance.
The SM6T Series is engineered for high-energy transient suppression in harsh environments, targeting automotive, industrial, and telecom systems where AEC-Q101 qualification, low leakage, and repeatable clamping behavior are mandatory.
FAQ
What is the clamping voltage of SM6T220AHM3_A/H at its rated peak pulse current?
The SM6T220AHM3_A/H has a maximum clamping voltage (VC) of 328 V when subjected to a 2.0 A peak pulse current with a 10/1000 μs waveform. This value is measured per JEDEC standards and represents the highest voltage the protected circuit will experience during a defined transient event. The clamping performance is guaranteed across the full operating temperature range of -65 °C to +150 °C, and the SM6T220AHM3_A/H maintains this specification under repeated surge conditions typical of automotive and industrial applications.
Is SM6T220AHM3_A/H qualified for automotive applications?
Yes, SM6T220AHM3_A/H is AEC-Q101 qualified, as confirmed by Vishay's ordering code suffix "HM3" and documentation in datasheet 88385. This qualification covers stress tests including high-temperature operating life, temperature cycling, and surge robustness - validating its suitability for under-hood and chassis-mounted automotive electronics. The SM6T220AHM3_A/H meets all requirements for use in engine control units, ADAS sensor modules, and body control modules where reliability under thermal and electrical stress is critical.
What does the "HM3" suffix indicate in SM6T220AHM3_A/H?
The "HM3" suffix in SM6T220AHM3_A/H denotes halogen-free, RoHS-compliant construction with AEC-Q101 qualification. Per Vishay's ordering nomenclature, "H" indicates AEC-Q101 qualification, "M3" specifies halogen-free and RoHS-compliant materials, and "_A/H" reflects the revision code and packaging variant (7" tape and reel). This distinguishes SM6T220AHM3_A/H from commercial-grade variants like SM6T220A-E3 and ensures compliance with automotive supply chain material declarations and environmental mandates.
What is the maximum reverse leakage current for SM6T220AHM3_A/H at its stand-off voltage?
The SM6T220AHM3_A/H exhibits a maximum reverse leakage current (ID) of 1.0 μA at its rated stand-off voltage (VWM) of 188 V, measured at 25 °C ambient. This ultra-low leakage preserves signal integrity in high-impedance circuits such as sensor bias networks and precision analog monitoring paths. Leakage remains below 5.0 μA up to +125 °C, supporting stable operation in thermally demanding environments without introducing measurement error or power loss.
Can SM6T220AHM3_A/H be used in bidirectional configurations?
No, SM6T220AHM3_A/H is a unidirectional TVS diode, as indicated by its part number structure and absence of "CA" suffix. Bidirectional variants in the SM6T family use the "CA" suffix (e.g., SM6T220CA), which provide symmetrical clamping in both polarities. Using SM6T220AHM3_A/H in a bidirectional application would result in forward conduction during negative transients, potentially damaging the device or failing to protect the circuit. For bidirectional protection, select SM6T220CA-HM3_A/H or equivalent.
SM6T220AHM3_A/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- SM6T, TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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:
- -
- 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_A/H FAQ
1.How can I place an order for SM6T220AHM3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SM6T220AHM3_A/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_A/H reliable?
The price and inventory of SM6T220AHM3_A/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_A/H is usually 5 days.
3.What payment methods are accepted for SM6T220AHM3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM6T220AHM3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM6T220AHM3_A/H?
SM6T220AHM3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM6T220AHM3_A/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_A/H?
For technical support, including SM6T220AHM3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM6T220AHM3_A/H requirements.
6.How does Aetrix verify that SM6T220AHM3_A/H is sourced from the original manufacturer or authorized distributors?
All SM6T220AHM3_A/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_A/H meets industry standards.
7.What is the process for return or replacement of SM6T220AHM3_A/H?
All SM6T220AHM3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with SM6T220AHM3_A/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_A/H part is unused and in its original packaging.
Return procedure for SM6T220AHM3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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