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Vishay General Semiconductor - Diodes Division SM6T220AHE3_B/I
- Part No.:
- SM6T220AHE3_B/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SM6T220AHE3_B/I.pdf
- Description:
- 600W,220V 5%,UNIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:3,870
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Product details
Overview
SM6T220AHE3_B/I 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 overvoltage protection for automotive-grade power rails and high-voltage sensor interfaces.
For engineers reviewing the SM6T220AHE3_B/I datasheet, SM6T220AHE3_B/I pinout, SM6T220AHE3_B/I application, or SM6T220AHE3_B/I equivalent, key selection criteria include its AEC-Q101 qualification, 188 V stand-off voltage (VWM), 1.0 μA max reverse leakage at VWM, and low thermal resistance (RθJL = 20 °C/W) for reliable surge handling in harsh environments.
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 ESD or load-dump events. Its glass-passivated junction ensures stable breakdown behavior and long-term reliability under repetitive surges.
The device meets MSL level 1 per J-STD-020, supports lead-free soldering at 260 °C peak, and delivers consistent clamping performance across -65 °C to +150 °C operating junction temperature range - critical for under-hood automotive electronics and industrial power supplies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 209 V / 231 V at 1.0 mA test current - defines precise voltage threshold where clamping initiates |
| 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) - limits protected circuit voltage during worst-case transients |
| PPPM | 600 W - peak surge power dissipation capability without failure under standardized waveform |
| TJ max. | +150 °C - enables operation in high-temperature automotive and industrial enclosures |
| RθJL | 20 °C/W - low junction-to-lead thermal resistance improves heat transfer to PCB copper pads |
| AEC-Q101 | Qualified - validated for automotive reliability including temperature cycling, HTRB, and ESD |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. Cathode identified by band marking on body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to system ground or lower-potential rail during clamping event |
| Cathode | Reverse-biased clamping terminal | Connected to protected line; conducts when transient exceeds VWM, diverting current to ground |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power | Handles automotive load-dump transients up to ISO 7637-2 Pulse 5a without degradation |
| Glass passivated junction | Ensures stable VBR tolerance and low parameter drift over lifetime and temperature |
| MSL Level 1 rating | Enables standard SMT reflow without moisture-related popcorn failure |
| AEC-Q101 qualification | Validated for automotive use including extended temperature cycling and accelerated life testing |
| Low inductance SMB package | Minimizes voltage overshoot during fast-rising transients (e.g., ESD > 10 kV) |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 24 V and 48 V battery-fed ECUs against load-dump transients per ISO 7637-2. IC Role / Device Role / Timing Role: Unidirectional clamping TVS placed between supply rail and chassis ground. Use Value: Limits voltage to ≤328 V during 100 V/100 ms load-dump events, preventing damage to MCU power inputs and PMICs. | Use Scenario: Safeguarding analog front-end inputs of pressure/temperature sensors in factory automation systems. IC Role / Device Role / Timing Role: Standoff protector on signal lines exposed to relay switching noise and motor drive coupling. Use Value: Clamps induced spikes ≤328 V within nanoseconds while maintaining <1.0 μA leakage at 188 V nominal rail. |
| Telecom DC Power Input Protection | Renewable Energy Inverter Control Board |
Use Scenario: Secondary overvoltage protection on -48 V telecom rectifier outputs feeding base station controllers. IC Role / Device Role / Timing Role: High-VWM TVS in series with primary MOV-based protection. Use Value: Provides precise 188 V standoff and sharp 209–231 V breakdown for coordinated staging with upstream protectors. | Use Scenario: Guarding gate driver ICs and isolated feedback circuits in solar string inverters subject to lightning-induced surges. IC Role / Device Role / Timing Role: Clamp device on auxiliary 15 V control supply derived from HV DC bus. Use Value: Withstands repeated 600 W surges and maintains RθJL = 20 °C/W for thermal stability during outdoor deployment. |
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-E3/5B | Same VBR (209–231 V), but 400 W PPPM; SMA package (larger RθJA = 125 °C/W) | Limited to lower-energy transients; not AEC-Q101 qualified | Select when cost sensitivity outweighs automotive qualification and surge margin |
| 1.5SMC220A | Same VBR, 1500 W PPPM, but larger SMC package (DO-214AB); higher capacitance | Better for high-energy lightning surges; less suitable for space-constrained PCBs | Choose when board layout allows larger footprint and higher clamping energy is required |
Compared with SMAJ220A-E3/5B and 1.5SMC220A, SM6T220AHE3_B/I offers optimal balance of AEC-Q101 compliance, SMB footprint, and 600 W surge capacity - making it preferred for automotive and compact industrial designs requiring verified reliability and controlled thermal response.
Availability
SM6T220AHE3_B/I is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface hardening, and telecom DC input safeguarding requiring stable component supply and long-term lifecycle support.
Supply support for SM6T220AHE3_B/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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and application-specific performance.
The SM6T Series is engineered for high-reliability transient suppression in automotive, industrial, and telecom infrastructure - delivering precision clamping, AEC-Q101 validation, and optimized thermal performance in compact SMB packages.
FAQ
What is the breakdown voltage tolerance for SM6T220AHE3_B/I?
The SM6T220AHE3_B/I 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 tolerance ensures predictable clamping onset across production lots and temperature extremes, supporting robust design margins in automotive and industrial applications where overvoltage thresholds must be precisely controlled.
Is SM6T220AHE3_B/I suitable for bidirectional transient protection?
No, SM6T220AHE3_B/I 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), which clamps symmetrically in both polarities. Using SM6T220AHE3_B/I in reverse-biased configurations beyond its specified VWM may cause premature conduction or failure; always match device polarity to circuit topology.
What does the "HE3_B/I" suffix mean in SM6T220AHE3_B/I?
The "HE3" denotes RoHS-compliant construction with AEC-Q101 qualification; "B" indicates revision level; "I" specifies packaging in 13-inch tape-and-reel format with 3200 units per reel. This ordering code confirms the part meets automotive reliability standards and ships in high-volume SMT-compatible packaging - essential for automated assembly of automotive ECUs and industrial control modules.
How does SM6T220AHE3_B/I perform under elevated ambient temperatures?
SM6T220AHE3_B/I derates linearly above 25 °C ambient: its peak pulse power drops per Figure 2 in the datasheet, retaining ≥50% of 600 W capability at 85 °C ambient when mounted on recommended 0.2" × 0.2" copper pads. Its RθJL = 20 °C/W and TJmax = +150 °C enable sustained operation in under-hood environments, provided PCB thermal design meets Vishay's pad layout guidelines.
Can SM6T220AHE3_B/I replace older SM6T220A variants without design changes?
Yes - SM6T220AHE3_B/I is a direct replacement for legacy SM6T220A parts in the same SMB package, with identical electrical characteristics, pinout, and mechanical dimensions. The "HE3" suffix adds AEC-Q101 qualification and RoHS compliance, but does not alter VBR, VC, or thermal performance. No PCB or schematic modifications are needed when upgrading to SM6T220AHE3_B/I for enhanced automotive reliability.
SM6T220AHE3_B/I 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:
- 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)
SM6T220AHE3_B/I FAQ
1.How can I place an order for SM6T220AHE3_B/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SM6T220AHE3_B/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 SM6T220AHE3_B/I reliable?
The price and inventory of SM6T220AHE3_B/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM6T220AHE3_B/I is usually 5 days.
3.What payment methods are accepted for SM6T220AHE3_B/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM6T220AHE3_B/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM6T220AHE3_B/I?
SM6T220AHE3_B/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM6T220AHE3_B/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 SM6T220AHE3_B/I?
For technical support, including SM6T220AHE3_B/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM6T220AHE3_B/I requirements.
6.How does Aetrix verify that SM6T220AHE3_B/I is sourced from the original manufacturer or authorized distributors?
All SM6T220AHE3_B/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 SM6T220AHE3_B/I meets industry standards.
7.What is the process for return or replacement of SM6T220AHE3_B/I?
All SM6T220AHE3_B/I units undergo pre-shipment inspection (PSI). If there is an issue with SM6T220AHE3_B/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 SM6T220AHE3_B/I part is unused and in its original packaging.
Return procedure for SM6T220AHE3_B/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM6T220AHE3_B/I Tags
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