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Vishay General Semiconductor - Diodes Division SM6T220A-E3/52
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- Part No.:
- SM6T220A-E3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SM6T220A-E3/52.pdf
- Description:
- TVS DIODE 188VWM 328VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,999
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Product details
Overview
SM6T220A-E3/52 from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode designed for robust overvoltage protection in power and signal lines. It features a 188 V stand-off voltage (VWM), 209–231 V breakdown voltage (VBR) at 1 mA, 328 V maximum clamping voltage (VC) at 2.0 A peak pulse current (IPPM), and 600 W peak pulse power capability with a 10/1000 μs waveform. It is used to protect MOSFETs, ICs, and sensor signal lines in automotive and industrial power supplies.
For engineers reviewing the SM6T220A-E3/52 datasheet, SM6T220A-E3/52 pinout, SM6T220A-E3/52 application, or SM6T220A-E3/52 equivalent, key selection criteria include clamping performance under 10/1000 μs transients, thermal resistance (RθJA = 100 °C/W), unidirectional polarity with cathode band marking, SMB (DO-214AA) package compatibility, and AEC-Q101 qualification eligibility via HE3 suffix variants.
Technical Context
The SM6T220A-E3/52 operates as a unidirectional avalanche diode, triggering conduction when reverse voltage exceeds its 209–231 V breakdown range. Its glass-passivated junction ensures stable leakage (<1.0 μA at VWM) and low inductance for fast response to ESD and switching transients.
It is rated for 600 W peak pulse power (10/1000 μs), 100 A non-repetitive forward surge current (IFSM), and operates across –65 °C to +150 °C junction temperature. The device mounts on 5.0 mm × 5.0 mm copper pads and meets MSL Level 1 per J-STD-020 with 260 °C reflow peak.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 188 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR (min/max) | 209 V / 231 V at 1.0 mA - Confirmed avalanche onset range under standardized DC test |
| VC @ IPPM | 328 V at 2.0 A (10/1000 μs) - Clamped voltage limiting downstream circuit stress during surge |
| PPPM | 600 W - Peak transient energy absorption capacity under standard lightning-surge waveform |
| RθJA | 100 °C/W - Thermal resistance defining junction-to-ambient temperature rise under 5.0 W steady-state dissipation |
| Package | SMB (DO-214AA) - Surface-mount outline with 0.220" body length and matte tin-plated leads |
| Polarity | Unidirectional - Cathode denoted by band; blocks forward current until VBR exceeded in reverse |
Pinout & Package
SMB (DO-214AA) package: molded plastic case with two coplanar gull-wing leads, 0.220" (5.59 mm) overall length, 0.155" (3.94 mm) width, and 0.086" (2.20 mm) height. Terminals are matte tin-plated, solderable per J-STD-002 and JESD 22-B102, with cathode identified by a visible band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Reverse voltage reference node | Connected to lower-potential side of protected line; defines conduction direction in unidirectional mode |
| Cathode | Clamping output / Surge current sink | Marked with band; ties to ground or return path to shunt transient energy away from load |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 μs) | Enables reliable suppression of IEC 61000-4-5 Level 4 surges without degradation in SMB footprint |
| Glass passivated junction | Ensures stable VBR tolerance (±5 %), low leakage (<1 μA), and long-term reliability under thermal cycling |
| Low inductance construction | Minimizes voltage overshoot during fast-rising transients (e.g., inductive switch-off in motor drives) |
| MSL Level 1, 260 °C peak reflow | Supports standard lead-free SMT assembly without preconditioning or special handling |
| AEC-Q101 qualification path | Available in HE3/HM3 variants for automotive applications requiring validated reliability and traceability |
Applications
| Automotive Power Supply Protection | Industrial Motor Drive Snubbing |
|---|---|
Use Scenario: Protecting 24 V DC power rails in engine control units against load dump transients up to 35 V and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Unidirectional TVS clamping device placed between battery input and DC/DC converter input stage. Use Value: Limits voltage excursion to ≤328 V during 600 W surges, preventing damage to downstream PMICs and microcontrollers. |
Use Scenario: Suppressing flyback voltage spikes across IGBT gate drivers and freewheeling diodes in variable-frequency drives. IC Role / Device Role / Timing Role: Fast-response transient clamp parallel to switching node, activated within nanoseconds of overvoltage event. Use Value: Reduces voltage overshoot by >40 % compared to RC snubbers alone, improving IGBT reliability and reducing EMI. |
| Telecom Line Interface Protection | Consumer Sensor Signal Line Guarding |
Use Scenario: Shielding RS-485 transceivers and Ethernet PHYs from induced surges on outdoor cabling in base station backhaul links. IC Role / Device Role / Timing Role: Primary-level surge protector mounted at connector entry point, upstream of secondary TVS arrays. Use Value: Withstands repeated 10/1000 μs surges up to 2.0 A while maintaining <1.0 μA leakage at 188 V, preserving signal integrity. |
Use Scenario: Safeguarding analog outputs of MEMS pressure sensors in smart home HVAC controllers exposed to ESD and board-level coupling. IC Role / Device Role / Timing Role: Low-capacitance unidirectional clamp on 3.3 V or 5 V sensor supply rail, adjacent to LDO input. Use Value: Prevents latch-up in precision ADCs by clamping transients before they exceed absolute maximum ratings of front-end op-amps. |
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-E3/52 | Same VBR (209–231 V) and VC (328 V), but 400 W PPPM rating and SMA package (higher RθJA = 140 °C/W) | Limited to lower-energy transients; less suitable for sustained surge environments like automotive load dump | Select SM6T220A-E3/52 when 600 W pulse handling and SMB mechanical robustness are required |
| 1.5SMC220A | Same electrical specs but SMC (DO-214AB) package: larger footprint (0.275" × 0.215"), higher thermal mass, RθJA = 75 °C/W | Better thermal performance for high-duty-cycle surges; incompatible with SMB land patterns | Choose SM6T220A-E3/52 for space-constrained designs needing 600 W in smallest possible surface-mount TVS outline |
Compared with SMAJ220A-E3/52 and 1.5SMC220A, the SM6T220A-E3/52 delivers identical clamping performance in a smaller SMB package with superior pulse power margin, making it optimal for compact, high-reliability 24–48 V systems where PCB area and surge headroom are critical.
Availability
SM6T220A-E3/52 is available at Aetrix Electronics and suitable for automotive power distribution, industrial motor drive protection, and telecom interface hardening requiring stable component supply, RoHS-compliant commercial-grade sourcing, and consistent tape-and-reel delivery.
Supply support for SM6T220A-E3/52 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 optimization.
The SM6T Series is engineered for high-energy transient suppression in harsh environments, targeting automotive, industrial, and telecom systems where robustness against load dump, ESD, and inductive switching events is mandatory.
FAQ
What is the maximum clamping voltage of the SM6T220A-E3/52 under standard surge conditions?
The SM6T220A-E3/52 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 per Figure 1 in Vishay document 88385 and defines the upper voltage limit imposed on protected circuitry during transient events. The SM6T220A-E3/52 maintains this clamping performance consistently across its operating temperature range.
Is the SM6T220A-E3/52 suitable for automotive applications?
The SM6T220A-E3/52 itself is RoHS-compliant commercial grade (E3 suffix), not AEC-Q101 qualified. However, Vishay offers AEC-Q101 variants under ordering codes SM6T220AHE3_X (HE3 suffix), which share identical electrical specs and SMB packaging. For automotive use, specify the HE3 version; the SM6T220A-E3/52 is intended for industrial and telecom applications where qualification is not mandated.
What does the "-E3/52" suffix indicate in SM6T220A-E3/52?
The "-E3" denotes RoHS-compliant, commercial-grade construction with matte tin-plated leads; "/52" specifies packaging in 7" diameter plastic tape and reel, with a base quantity of 750 units. This format aligns with Vishay's standard ordering nomenclature and ensures compatibility with automated SMT placement equipment calibrated for SMB (DO-214AA) components.
How does the SMB package of the SM6T220A-E3/52 compare thermally to larger packages like SMC?
The SMB package of the SM6T220A-E3/52 has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 5.0 mm × 5.0 mm copper pads, versus ~75 °C/W for the larger SMC (DO-214AB) package. While the SMB enables higher board density, designers must verify power derating above 25 °C using Figure 2 in the datasheet to ensure safe operation of the SM6T220A-E3/52 under sustained surge duty cycles.
Can the SM6T220A-E3/52 be used in bidirectional configurations?
No - the SM6T220A-E3/52 is strictly unidirectional, as indicated by its "A" suffix and cathode band marking. Bidirectional variants require the "CA" suffix (e.g., SM6T220CA). Using the SM6T220A-E3/52 in reverse-biased AC signal paths would result in forward conduction and failure; always select CA-suffixed parts for symmetrical transient suppression.
SM6T220A-E3/52 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-E3/52 FAQ
1.How can I place an order for SM6T220A-E3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SM6T220A-E3/52 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-E3/52 reliable?
The price and inventory of SM6T220A-E3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM6T220A-E3/52 is usually 5 days.
3.What payment methods are accepted for SM6T220A-E3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM6T220A-E3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM6T220A-E3/52?
SM6T220A-E3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM6T220A-E3/52 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-E3/52?
For technical support, including SM6T220A-E3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM6T220A-E3/52 requirements.
6.How does Aetrix verify that SM6T220A-E3/52 is sourced from the original manufacturer or authorized distributors?
All SM6T220A-E3/52 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-E3/52 meets industry standards.
7.What is the process for return or replacement of SM6T220A-E3/52?
All SM6T220A-E3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SM6T220A-E3/52, 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-E3/52 part is unused and in its original packaging.
Return procedure for SM6T220A-E3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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