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Vishay General Semiconductor - Diodes Division SM6T220CAHM3_B/H
- Part No.:
- SM6T220CAHM3_B/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SM6T220CAHM3_B/H.pdf
- Description:
- 600W,220V 5%,BIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:5,354
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Product details
Overview
SM6T220CAHM3_B/H from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, rated for 220 V breakdown voltage (VBR), 600 W peak pulse power (10/1000 μs), and 328 V maximum clamping voltage at IPPM, designed to protect automotive-grade signal lines and power rails against ESD and load dump transients.
For engineers reviewing the SM6T220CAHM3_B/H datasheet, SM6T220CAHM3_B/H pinout, SM6T220CAHM3_B/H application, or SM6T220CAHM3_B/H equivalent, key selection criteria include bidirectional polarity, AEC-Q101 qualification, halogen-free RoHS compliance, low clamping ratio (1.49×VBR), and thermal resistance of 20 °C/W junction-to-lead.
Technical Context
This TVS diode operates symmetrically in both directions due to its CA suffix, with identical VBR (209–231 V), VWM (188 V), and ID (1.0 μA) specifications for reverse and forward quadrants. Its glass-passivated junction ensures stable leakage and robust surge handling under repetitive stress.
Designed for surface-mount automated assembly, it meets MSL Level 1 (260 °C peak reflow) and JESD201 Class 2 whisker resistance. The SMB package provides low inductance and thermal performance suitable for high-speed transient suppression on PCBs with minimum 5.0 mm × 5.0 mm copper pads per terminal.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 209 V / 231 V - Ensures reliable conduction onset across manufacturing tolerance at 1.0 mA test current |
| VWM | 188 V - Maximum continuous reverse operating voltage before leakage exceeds 1.0 μA |
| VC @ IPPM (10/1000 μs) | 328 V - Clamped voltage during 600 W transient, limiting downstream device stress |
| PPPM | 600 W - Peak pulse power handling capability per standard 10/1000 μs waveform |
| TJ max. | +150 °C - Enables operation in under-hood automotive environments without derating |
| RθJL | 20 °C/W - Low junction-to-lead thermal resistance supports sustained power dissipation |
| AEC-Q101 qualified | Yes - Validated for automotive electronics per stress test requirements including HTOL, TCT, and ESD |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional configuration with no polarity marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (Anode) | Transient current return path | Both terminals function identically; symmetrical conduction enables bidirectional clamping without orientation dependency |
| Anode (Cathode) | Transient current return path | Identical to opposite terminal; no functional distinction between pins in CA-series devices |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity concerns |
| 600 W peak pulse power | Withstands ISO 7637-2 Pulse 1/2a/5a transients and IEC 61000-4-5 surge events in automotive ECUs |
| AEC-Q101 qualification | Validates reliability for automotive control modules, body electronics, and ADAS sensor interfaces |
| Halogen-free & RoHS-compliant | Meets ELV Directive and IPC-1752A material declaration requirements for Tier 1 supply chains |
| Low inductance SMB package | Minimizes voltage overshoot during fast-rising transients (<1 ns rise time) on high-speed data lines |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Suppressing load dump transients (up to 60 V, 100 ms) on 24 V battery-fed ECUs in commercial vehicles. IC Role / Device Role / Timing Role: Primary overvoltage clamp placed directly at connector entry point before DC/DC converter input. Use Value: Limits rail voltage to ≤328 V during 600 W surge, preventing MOSFET gate oxide rupture and regulator latch-up. | Use Scenario: Protecting 4–20 mA current loop inputs in PLC analog I/O modules exposed to field wiring surges. IC Role / Device Role / Timing Role: Bidirectional shunt element across loop terminals to divert induced common-mode transients. Use Value: Maintains loop integrity by clamping ±328 V spikes while adding <1.0 pF capacitance at 1 MHz, avoiding signal distortion. |
| Automotive CAN FD Transceiver Protection | Consumer Appliance Motor Drive Protection |
Use Scenario: Safeguarding CAN FD physical layer transceivers (e.g., TCAN1042) against ESD and coupled noise in infotainment head units. IC Role / Device Role / Timing Role: Secondary-level protection placed after common-mode choke but before transceiver pins. Use Value: Absorbs ±30 kV HBM ESD pulses with sub-ns response, preserving signal edge integrity up to 5 Mbps. | Use Scenario: Shielding microcontroller GPIOs driving brushed DC motors in smart home appliances subject to commutation spikes. IC Role / Device Role / Timing Role: Localized clamp across motor coil terminals and MCU driver outputs. Use Value: Limits flyback voltage to 328 V, eliminating need for external snubbers and reducing BOM count by one component. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ220CA | Same VBR range (209–231 V) and PPPM (600 W), but SMA package (higher RθJA = 130 °C/W vs. SMB's 100 °C/W) | Limited to lower-power industrial boards; not AEC-Q101 qualified | Select when cost sensitivity outweighs automotive qualification and thermal performance needs |
| 1.5KE220CA | Higher PPPM (1500 W), DO-201 package (through-hole), VC = 355 V, no AEC-Q101 rating | Suitable for legacy industrial power supplies; incompatible with SMT-only assembly | Choose only for through-hole designs requiring higher surge margin and where reflow compatibility is not required |
Compared with SMAJ220CA and 1.5KE220CA, SM6T220CAHM3_B/H delivers automotive-grade reliability in an optimized SMT footprint with superior thermal coupling and lower clamping voltage-critical for space-constrained, high-reliability vehicle networks.
Availability
SM6T220CAHM3_B/H is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor interfaces, CAN FD transceiver protection, and consumer appliance motor drive circuits requiring stable component supply and full traceability.
Supply support for SM6T220CAHM3_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 passive components with emphasis on high-reliability and automotive-grade solutions.
The SM6T Series is engineered specifically for board-level transient suppression in harsh environments, combining AEC-Q101 validation, halogen-free construction, and SMB packaging optimized for automated manufacturing and thermal performance.
FAQ
What does the "CA" suffix indicate in SM6T220CAHM3_B/H?
The "CA" suffix in SM6T220CAHM3_B/H denotes a bidirectional configuration, meaning the device provides symmetrical transient voltage suppression in both forward and reverse directions. This eliminates polarity concerns during placement and enables protection of AC-coupled or floating signal paths. Unlike unidirectional variants (e.g., SM6T220A), SM6T220CAHM3_B/H has identical VBR, VWM, and ID characteristics for both polarities, as confirmed in Vishay's SM6T datasheet revision 09-Jan-2024.
Is SM6T220CAHM3_B/H qualified for automotive use?
Yes, SM6T220CAHM3_B/H is AEC-Q101 qualified, as indicated by the "HM3" suffix (halogen-free, RoHS-compliant, and AEC-Q101 qualified). It undergoes stress testing per AEC-Q101 standards including high-temperature operating life, temperature cycling, and ESD. This qualification makes SM6T220CAHM3_B/H suitable for under-hood and cabin applications such as body control modules, lighting drivers, and ADAS sensor interfaces.
What is the maximum clamping voltage of SM6T220CAHM3_B/H under a 10/1000 μs surge?
The maximum clamping voltage (VC) of SM6T220CAHM3_B/H under a 10/1000 μs waveform is 328 V at its rated peak pulse current (IPPM). This value is measured per Figure 1 in the Vishay SM6T datasheet and reflects worst-case clamping performance across process variation and temperature. At this level, SM6T220CAHM3_B/H limits transient energy delivered to downstream ICs while maintaining safe operating margins for 24 V and 48 V automotive systems.
How does the SMB (DO-214AA) package of SM6T220CAHM3_B/H compare thermally to SMA?
The SMB package of SM6T220CAHM3_B/H offers lower thermal resistance than SMA: RθJL = 20 °C/W versus ~30 °C/W for SMA, and RθJA = 100 °C/W (on 5.0 mm × 5.0 mm pads) versus 130 °C/W for SMA. This improves power dissipation capability and reduces junction temperature rise during repeated transients-critical for automotive modules operating continuously at elevated ambient temperatures.
Does SM6T220CAHM3_B/H require orientation during PCB placement?
No, SM6T220CAHM3_B/H does not require specific orientation during PCB placement because it is a bidirectional TVS diode. The device has no cathode band or polarity marking, and both terminals perform identically in either direction. This simplifies automated pick-and-place programming and eliminates risk of misorientation-related field failures-a key advantage over unidirectional variants like SM6T220AHM3_B/H.
SM6T220CAHM3_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:
- -
- Bidirectional Channels:
- 1
- 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)
SM6T220CAHM3_B/H FAQ
1.How can I place an order for SM6T220CAHM3_B/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SM6T220CAHM3_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 SM6T220CAHM3_B/H reliable?
The price and inventory of SM6T220CAHM3_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 SM6T220CAHM3_B/H is usually 5 days.
3.What payment methods are accepted for SM6T220CAHM3_B/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM6T220CAHM3_B/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM6T220CAHM3_B/H?
SM6T220CAHM3_B/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM6T220CAHM3_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 SM6T220CAHM3_B/H?
For technical support, including SM6T220CAHM3_B/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM6T220CAHM3_B/H requirements.
6.How does Aetrix verify that SM6T220CAHM3_B/H is sourced from the original manufacturer or authorized distributors?
All SM6T220CAHM3_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 SM6T220CAHM3_B/H meets industry standards.
7.What is the process for return or replacement of SM6T220CAHM3_B/H?
All SM6T220CAHM3_B/H units undergo pre-shipment inspection (PSI). If there is an issue with SM6T220CAHM3_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 SM6T220CAHM3_B/H part is unused and in its original packaging.
Return procedure for SM6T220CAHM3_B/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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