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Vishay General Semiconductor - Diodes Division SM6T22CAHE3/52
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- Part No.:
- SM6T22CAHE3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SM6T22CAHE3/52.pdf
- Description:
- TVS DIODE 18.8VWM 30.6VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:9,797
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Product details
Overview
SM6T22CAHE3/52 from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, rated for 600 W peak pulse power (10/1000 μs), 22 V breakdown voltage (VBR min/max = 20.9–23.1 V at 1 mA), and 30.6 V maximum clamping voltage (VC) at 20 A IPPM. It protects signal lines in automotive sensor units against inductive switching transients.
For engineers reviewing the SM6T22CAHE3/52 datasheet, SM6T22CAHE3/52 pinout, SM6T22CAHE3/52 application, or SM6T22CAHE3/52 equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, 150 °C max junction temperature, low inductance, and RoHS-compliant matte tin-plated terminals solderable per J-STD-002.
Technical Context
This bidirectional TVS operates symmetrically across both polarities with identical VBR, VWM (18.8 V), and VC characteristics in forward and reverse directions. Its glass-passivated junction ensures stable breakdown and low leakage (<1 μA at VWM).
Designed for surface-mount automated placement, it meets MSL level 1 (260 °C peak reflow) and delivers 600 W surge handling on standard 5.0 mm × 5.0 mm copper pads. Thermal resistance is RθJA = 100 °C/W and RθJL = 20 °C/W.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 20.9 V / 23.1 V at 1 mA - defines precise voltage threshold where clamping begins in either polarity |
| VWM | 18.8 V - maximum continuous reverse stand-off voltage before leakage exceeds 1 μA |
| VC @ IPPM | 30.6 V at 20 A (10/1000 μs) - peak clamped voltage during worst-case surge, limiting stress on downstream ICs |
| PPPM | 600 W - surge power handling capacity under standardized 10/1000 μs waveform |
| TJ max | +150 °C - enables reliable operation in under-hood automotive environments |
| Package | SMB (DO-214AA) - compact 2-pin SMD footprint with 0.220" x 0.130" body and defined thermal pad layout |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD |
Pinout & Package
SM6T22CAHE3/52 uses an SMB (DO-214AA) surface-mount package with two unmarked terminals - no polarity marking due to bidirectional symmetry. The device mounts with cathode/anode indistinguishable; both terminals function identically in either direction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | Anode/Cathode (bidirectional) | Either terminal serves as input/output node; symmetrical conduction eliminates orientation constraints during PCB layout |
| Terminal 2 | Anode/Cathode (bidirectional) | Paired terminal completing the bidirectional clamping path; no internal polarity distinction required |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 μs) | Robust protection against ISO 7637-2 Pulse 1/2a/5a transients without derating on standard PCB copper |
| AEC-Q101 qualified | Validated for automotive electronics including engine control modules and ADAS sensor interfaces |
| Glass passivated junction | Ensures stable VBR over lifetime and immunity to humidity-induced parameter drift |
| Low inductance design | Minimizes voltage overshoot during fast-rising transients (e.g., load dump, relay bounce) |
| MSL Level 1 (260 °C) | Compatible with standard lead-free reflow profiles without preconditioning or special handling |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) in engine bay modules exposed to load dump and alternator ripple. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed across signal line and ground to shunt transients before reaching sensitive front-end amplifiers or microcontrollers. Use Value: Clamps 20 A surges to ≤30.6 V, preserving signal integrity and preventing latch-up in 3.3 V/5 V interface ICs per ISO 16750-2. | Use Scenario: Safeguarding digital input channels of programmable logic controllers against field-wiring induced surges from solenoid valves and motor contactors. IC Role / Device Role / Timing Role: Parallel-connected transient suppressor on 24 V DC input lines, absorbing repetitive 10/1000 μs pulses up to 600 W without degradation. Use Value: Maintains <1 μA leakage at 18.8 V stand-off, ensuring clean logic-level detection while surviving >1000 surges per IEC 61000-4-5. |
| Telecom Line Interface Protection | Consumer Appliance Motor Control |
Use Scenario: Shielding RS-485 transceivers and Ethernet PHYs in base station equipment from lightning-induced surges on long cable runs. IC Role / Device Role / Timing Role: Primary clamping device across differential pair (A/B) and ground, leveraging symmetrical bidirectional response to common-mode transients. Use Value: Delivers 30.6 V clamping at 20 A with <5 ns response time, meeting GR-1089-CORE Level 3 telecom surge requirements. | Use Scenario: Suppressing commutation spikes from brushed DC motors in smart home appliances (e.g., vacuum cleaners, washing machines). IC Role / Device Role / Timing Role: Across-motor terminals to clamp inductive kickback, protecting MOSFET half-bridge drivers and MCU GPIOs. Use Value: Handles 100 A IFSM (unidirectional rating applies to each polarity), enabling robust suppression of high-energy back-EMF without failure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ22CA | 400 W PPPM, same VBR range (20.9–23.1 V), SMA package (higher RθJA = 140 °C/W) | Limited to lower-energy transients; not AEC-Q101 qualified | Select when cost sensitivity outweighs automotive qualification and 600 W headroom |
| 1.5KE22CA | 1500 W PPPM, through-hole DO-201 package, higher VC = 33.2 V at 45.5 A | Requires PCB real estate and wave soldering; unsuitable for high-density SMT designs | Choose for legacy industrial systems needing higher surge margin and board-level serviceability |
Compared with SMAJ22CA and 1.5KE22CA, SM6T22CAHE3/52 uniquely combines AEC-Q101 qualification, 600 W surge rating, and SMB footprint-enabling automotive-grade protection without sacrificing SMT manufacturability or thermal performance.
Availability
SM6T22CAHE3/52 is available at Aetrix Electronics and suitable for automotive sensor units, industrial PLC I/O modules, telecom line interfaces, and consumer appliance motor controls requiring stable component supply and full traceability.
Supply support for SM6T22CAHE3/52 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, TVS devices, and optoelectronics with emphasis on reliability and application-specific performance.
The SM6T Series was engineered for high-reliability transient suppression in space-constrained, thermally demanding environments-including automotive powertrain and ADAS subsystems-where bidirectional clamping and AEC-Q101 compliance are mandatory.
FAQ
What does the "CA" suffix indicate in SM6T22CAHE3/52?
The "CA" suffix denotes that SM6T22CAHE3/52 is a bidirectional transient voltage suppressor, meaning it provides symmetrical clamping in both forward and reverse directions. This eliminates polarity concerns during placement and makes it ideal for protecting AC-coupled or differential signal lines such as CAN bus or RS-485 interfaces.
Is SM6T22CAHE3/52 suitable for automotive applications?
Yes, SM6T22CAHE3/52 is AEC-Q101 qualified and manufactured with HE3 suffix indicating automotive-grade qualification. It meets stringent requirements for temperature cycling, high-temperature reverse bias, and mechanical shock-making it appropriate for engine control units, body electronics, and ADAS sensor modules.
What is the maximum clamping voltage of SM6T22CAHE3/52 under surge conditions?
The maximum clamping voltage (VC) of SM6T22CAHE3/52 is 30.6 V at 20 A peak pulse current with a 10/1000 μs waveform. This value is guaranteed across the full operating temperature range and ensures downstream 3.3 V or 5 V ICs remain within safe voltage limits during transient events.
How does the SMB package of SM6T22CAHE3/52 compare to SMA or SMC alternatives?
The SMB (DO-214AA) package of SM6T22CAHE3/52 offers lower thermal resistance (RθJA = 100 °C/W) than SMA (140 °C/W) and smaller footprint than SMC, while maintaining 600 W surge capability. Its optimized pad layout supports efficient heat dissipation in dense automotive PCBs without requiring thermal vias.
Does SM6T22CAHE3/52 require orientation during PCB assembly?
No, SM6T22CAHE3/52 has no polarity marking and is fully bidirectional-both terminals are functionally identical. Unlike unidirectional TVS diodes, it can be placed in either orientation on the PCB, simplifying automated assembly and reducing placement errors in high-volume manufacturing.
SM6T22CAHE3/52 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:
- Discontinued at Digi-Key
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 18.8V
- Voltage - Breakdown (Min):
- 20.9V
- Voltage - Clamping (Max) @ Ipp:
- 30.6V
- Current - Peak Pulse (10/1000µs):
- 20A
- 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 (SMBJ)
SM6T22CAHE3/52 FAQ
1.How can I place an order for SM6T22CAHE3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SM6T22CAHE3/52 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 SM6T22CAHE3/52 reliable?
The price and inventory of SM6T22CAHE3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM6T22CAHE3/52 is usually 5 days.
3.What payment methods are accepted for SM6T22CAHE3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM6T22CAHE3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM6T22CAHE3/52?
SM6T22CAHE3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM6T22CAHE3/52 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 SM6T22CAHE3/52?
For technical support, including SM6T22CAHE3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM6T22CAHE3/52 requirements.
6.How does Aetrix verify that SM6T22CAHE3/52 is sourced from the original manufacturer or authorized distributors?
All SM6T22CAHE3/52 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 SM6T22CAHE3/52 meets industry standards.
7.What is the process for return or replacement of SM6T22CAHE3/52?
All SM6T22CAHE3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SM6T22CAHE3/52, 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 SM6T22CAHE3/52 part is unused and in its original packaging.
Return procedure for SM6T22CAHE3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM6T22CAHE3/52 Tags
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