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Vishay General Semiconductor - Diodes Division SM6T220A-E3/5B
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- Part No.:
- SM6T220A-E3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SM6T220A-E3/5B.pdf
- Description:
- TVS DIODE 188VWM 328VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:5,959
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Product details
Overview
SM6T220A-E3/5B from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) 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 188 V stand-off voltage (VWM). It protects MOSFETs and sensor signal lines in automotive powertrain control units against inductive switching transients.
For engineers reviewing the SM6T220A-E3/5B datasheet, SM6T220A-E3/5B pinout, SM6T220A-E3/5B application, or SM6T220A-E3/5B equivalent, key selection criteria include clamping performance under 10/1000 μs surge, thermal resistance (RθJA = 100 °C/W), unidirectional polarity marking, AEC-Q101 qualification status, and RoHS-compliant matte tin plating per J-STD-002.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: when reverse voltage exceeds VWM = 188 V, it avalanches at VBR = 209–231 V (tested at 1.0 mA), limiting transient energy to ≤328 V at 2.0 A peak pulse current. Its low-inductance SMB package enables fast response (<1 ns) to ESD and lightning-induced surges.
Designed for high-reliability automotive environments, SM6T220A-E3/5B features glass-passivated junction, MSL Level 1 moisture sensitivity, and operation from –65 °C to +150 °C. It is rated for 100 A non-repetitive forward surge (10 ms half-sine) and dissipates 5.0 W continuously at 50 °C on infinite heatsink.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 209 V / 231 V at 1.0 mA - defines precise avalanche initiation threshold for repeatable clamping behavior |
| VWM | 188 V - maximum continuous reverse operating voltage before leakage exceeds 1.0 μA |
| VC @ IPPM | 328 V at 2.0 A (10/1000 μs) - peak clamped voltage seen by protected circuit during standard surge event |
| PPPM | 600 W - peak transient power handling capability without failure under defined waveform |
| RθJA | 100 °C/W - junction-to-ambient thermal resistance determines derating above 25 °C ambient |
| TJ max. | +150 °C - maximum allowable junction temperature for sustained reliability in under-hood applications |
| Polarity | Unidirectional - cathode marked by band; blocks forward conduction, clamps reverse transients only |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, 2-terminal device with cathode band marking. Dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H); matte tin-plated leads, J-STD-002 solderable.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / transient return path | Connected to system ground or low-impedance return; completes clamping loop during reverse surge |
| Cathode | Reverse-biased terminal / clamping node | Connected to protected line (e.g., 24 V rail); avalanche conduction begins here when VWM exceeded |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 μs) | Enables robust protection of 24 V automotive subsystems against ISO 7637-2 Pulse 1/2a/5a transients without derating |
| Low-inductance SMB package | Minimizes voltage overshoot during nanosecond-scale ESD events (IEC 61000-4-2), preserving signal integrity |
| Glass-passivated junction | Ensures stable VBR over lifetime and prevents moisture-induced parameter drift in humid engine bay environments |
| AEC-Q101 qualified variant available | HE3/HM3 suffix versions meet stress test requirements for automotive electronics, including temperature cycling and HTRB |
| MSL Level 1 (260 °C peak) | Supports lead-free reflow assembly without popcorn cracking or delamination risk |
Applications
| Automotive Powertrain Control | Industrial Motor Drive Protection |
|---|---|
Use Scenario: Suppresses load-dump transients (up to 60 V) and inductive kickback from solenoid valves in 24 V engine control modules. IC Role / Device Role / Timing Role: Unidirectional TVS placed between 24 V supply rail and chassis ground, clamping within 1 ns after overvoltage onset. Use Value: Limits voltage seen by MCU power input and CAN transceivers to ≤328 V, preventing latch-up or permanent damage during cold-crank or alternator regulation faults. | Use Scenario: Protects gate drivers and current-sense amplifiers in variable-frequency drives exposed to back-EMF spikes from 3-phase induction motors. IC Role / Device Role / Timing Role: Mounted across DC bus rails (e.g., +24 V to GND) to clamp switching transients generated during IGBT turn-off. Use Value: Maintains safe operating area for downstream SiC MOSFETs by capping transient overshoot to 328 V, reducing need for oversized snubbers. |
| Telecom Base Station Power Input | Medical Imaging Sensor Interface |
Use Scenario: Shields 48 V primary power input of remote radio units against lightning-induced surges coupled via outdoor cabling. IC Role / Device Role / Timing Role: First-stage protector in multi-level TVS architecture, absorbing bulk energy before secondary polymer-based suppressors. Use Value: Withstands 600 W peak pulses while maintaining <1.0 μA leakage at 188 V, ensuring minimal standby power loss in always-on telecom equipment. | Use Scenario: Safeguards analog front-end of X-ray detector ASICs from ESD events during cable handling or connector mating. IC Role / Device Role / Timing Role: Placed directly at SMA connector entry point on PCB, with shortest possible trace to ground plane. Use Value: Clamps 8 kV contact ESD (IEC 61000-4-2) to <328 V in <1 ns, preventing latch-up or parametric shift in precision 24-bit ADC reference paths. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ220A | Same VBR range (209–231 V), identical SMB package, but lower PPPM = 600 W (same rating), higher VC = 344 V at 1.9 A | Marginally higher clamping voltage reduces protection margin for sensitive 24 V logic; suitable where layout allows tighter grounding | Select SMBJ220A only if existing design uses SMBJ footprint and VC margin permits 16 V higher clamping |
| 1.5SMC220A | Larger SMC (DO-214AB) package, same electrical specs, RθJA = 60 °C/W (superior thermal performance), but 30 % larger board area | Better thermal derating for continuous surge exposure; not suitable for space-constrained automotive modules | Choose 1.5SMC220A for industrial power supplies requiring >5 W steady-state dissipation or extended high-temp operation |
Compared with SMBJ220A and 1.5SMC220A, SM6T220A-E3/5B delivers identical clamping performance in the smallest SMB footprint, optimized for automated placement and AEC-Q101-compliant automotive use-making it preferred where board space, thermal budget, and qualification alignment are jointly constrained.
Availability
SM6T220A-E3/5B is available at Aetrix Electronics and suitable for automotive powertrain control, industrial motor drive protection, and telecom base station power input requiring stable component supply, RoHS compliance, and verified surge immunity.
Supply support for SM6T220A-E3/5B 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 designs and manufactures discrete semiconductors, including diodes, rectifiers, and TVS devices, with global manufacturing and testing facilities focused on reliability and automotive-grade qualification.
The SM6T Series targets high-energy transient suppression in space-constrained, high-reliability applications-specifically engineered for automotive, industrial, and telecom systems needing consistent clamping, low leakage, and MSL Level 1 reflow compatibility.
FAQ
What is the clamping voltage of SM6T220A-E3/5B at its rated peak pulse current?
The SM6T220A-E3/5B has a maximum clamping voltage (VC) of 328 V when subjected to a 10/1000 μs waveform at 2.0 A peak pulse current (IPPM). This value is measured under standardized test conditions per JEDEC and ensures predictable overvoltage limiting for protected circuits. The SM6T220A-E3/5B maintains this clamping performance across its full operating temperature range (–65 °C to +150 °C).
Is SM6T220A-E3/5B qualified for automotive applications?
The base SM6T220A-E3/5B is RoHS-compliant and commercial-grade; however, Vishay offers AEC-Q101 qualified variants under ordering codes SM6T220AHE3_X (RoHS + AEC-Q101) and SM6T220AHM3_X (halogen-free + AEC-Q101). The SM6T220A-E3/5B itself is not AEC-Q101 qualified, but shares identical die and package construction with qualified versions-making it suitable for non-safety-critical automotive subsystems where qualification is not mandated.
What does the "E3/5B" suffix indicate in SM6T220A-E3/5B?
The "E3" suffix denotes RoHS-compliant, commercial-grade construction with matte tin-plated leads; "5B" specifies packaging in 13-inch diameter plastic tape and reel, with 3200 units per reel. This format supports high-speed pick-and-place assembly and complies with J-STD-002 solderability standards. The SM6T220A-E3/5B is not halogen-free (that requires "M3" suffix) nor AEC-Q101 qualified (which requires "HE3" or "HM3").
How does SM6T220A-E3/5B compare to bidirectional TVS diodes like SM6T220CA?
The SM6T220A-E3/5B is unidirectional and features a cathode band for polarity identification; SM6T220CA is bidirectional with no polarity marking and symmetric clamping in both directions. While both share VBR = 209–231 V and PPPM = 600 W, the SM6T220A-E3/5B is intended for DC rail protection (e.g., 24 V supply to ground), whereas SM6T220CA suits AC or floating signal lines. Using SM6T220A-E3/5B in place of SM6T220CA would block forward conduction and fail to clamp positive transients.
What is the thermal resistance and maximum power dissipation of SM6T220A-E3/5B?
The SM6T220A-E3/5B has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W and a continuous power dissipation (PD) of 5.0 W at 50 °C ambient on an infinite heatsink. Derating is required above 25 °C ambient per Figure 2 in the datasheet; at 125 °C ambient, usable PD drops to ~1.5 W. The SM6T220A-E3/5B's thermal performance is optimized for short-duration transients rather than sustained power dissipation.
SM6T220A-E3/5B 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:
- 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBJ)
SM6T220A-E3/5B FAQ
1.How can I place an order for SM6T220A-E3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SM6T220A-E3/5B 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 SM6T220A-E3/5B reliable?
The price and inventory of SM6T220A-E3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM6T220A-E3/5B is usually 5 days.
3.What payment methods are accepted for SM6T220A-E3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM6T220A-E3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM6T220A-E3/5B?
SM6T220A-E3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM6T220A-E3/5B 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 SM6T220A-E3/5B?
For technical support, including SM6T220A-E3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM6T220A-E3/5B requirements.
6.How does Aetrix verify that SM6T220A-E3/5B is sourced from the original manufacturer or authorized distributors?
All SM6T220A-E3/5B 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 SM6T220A-E3/5B meets industry standards.
7.What is the process for return or replacement of SM6T220A-E3/5B?
All SM6T220A-E3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SM6T220A-E3/5B, 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 SM6T220A-E3/5B part is unused and in its original packaging.
Return procedure for SM6T220A-E3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM6T220A-E3/5B Tags
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