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Vishay General Semiconductor - Diodes Division SM6T12CAHE3/52
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- Part No.:
- SM6T12CAHE3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SM6T12CAHE3/52.pdf
- Description:
- TVS DIODE 10.2VWM 16.7VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:8,835
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Product details
Overview
SM6T12CAHE3/52 from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, rated for 12 V standoff voltage (VWM = 10.2 V), 600 W peak pulse power (10/1000 μs), and clamping voltage of 16.7 V at 36 A. It provides robust ESD and surge protection for automotive sensor signal lines, I/O ports, and MOSFET gate drivers.
For engineers reviewing the SM6T12CAHE3/52 datasheet, SM6T12CAHE3/52 pinout, SM6T12CAHE3/52 application, or SM6T12CAHE3/52 equivalent, key selection criteria include bidirectional clamping behavior, AEC-Q101 qualification, 150 °C junction temperature rating, low inductance design, and compatibility with automated SMT placement on standard PCB pads.
Technical Context
The SM6T12CAHE3/52 operates as a symmetric bidirectional TVS, exhibiting identical breakdown (VBR min/max = 11.4–12.6 V) and clamping characteristics in both polarities. Its glass-passivated junction ensures stable leakage (<5 μA at VWM) and repeatable avalanche response under repetitive transients.
Designed for surface-mount use on 0.2" × 0.2" copper pads, it delivers 600 W peak pulse power per IEC 61000-4-5 (10/1000 μs) with thermal resistance RθJA = 100 °C/W and RθJL = 20 °C/W, enabling reliable operation up to TJ = 150 °C without forced cooling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 10.2 V - Maximum continuous reverse voltage before significant leakage; defines safe operating margin below clamping threshold |
| VBR (min/max) | 11.4 V / 12.6 V - Breakdown occurs within this range at 1 mA test current; ensures predictable turn-on across production lot |
| VC @ IPPM | 16.7 V @ 36 A - Clamping voltage during 10/1000 μs surge; limits downstream IC stress to safe levels |
| PPPM | 600 W - Peak pulse power handling per standard waveform; supports Level 4 IEC 61000-4-5 immunity |
| TJ max | +150 °C - Maximum junction temperature; enables deployment in under-hood automotive environments |
| Package | SMB (DO-214AA) - Industry-standard 2-pin SMT outline; compatible with JEDEC MS-012AC footprint and reflow profiles |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional device with no polarity 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 | Transient current entry point (positive polarity) | One terminal of symmetrical avalanche junction; conducts during positive overvoltage events |
| Cathode | Transient current entry point (negative polarity) | Second terminal of symmetrical junction; conducts identically during negative overvoltage events |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Identical VBR and VC in both directions - eliminates need for polarity-aware layout in differential or AC-coupled lines |
| AEC-Q101 qualification | Validated for automotive electronics - meets stress tests including HTOL, TC, and ESD per AEC specification |
| Low inductance | Minimizes voltage overshoot during fast transients - critical for protecting high-speed interfaces like CAN FD or LIN |
| MSL Level 1 | Unlimited floor life at ≤30 °C/60% RH - allows direct placement without baking or dry-pack handling |
| Glass passivated junction | Stable leakage and breakdown over time and temperature - ensures long-term reliability in industrial environments |
Applications
| Automotive Sensor Protection | Industrial I/O Port Protection |
|---|---|
Use Scenario: Protecting analog output lines of pressure, temperature, or position sensors in engine control units exposed to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed between sensor output and microcontroller ADC input. Use Value: Limits transient voltage to ≤16.7 V, preventing ADC saturation and latch-up while maintaining signal integrity below 10.2 V normal operation. | Use Scenario: Safeguarding RS-485 transceiver data lines in factory automation PLCs subjected to lightning-induced surges on long cable runs. IC Role / Device Role / Timing Role: Parallel-connected TVS on differential bus pair (A/B), referenced to common-mode ground. Use Value: Clamps common-mode surges up to 600 W without degrading signal edge rate due to low junction capacitance and inductance. |
| Power Supply Rail Clamp | MOSFET Gate Driver Protection |
Use Scenario: Suppressing switching spikes on 12 V auxiliary rails powering infotainment systems in vehicles with stop-start functionality. IC Role / Device Role / Timing Role: Shunt device across rail and ground, activated only during overvoltage excursions exceeding 10.2 V. Use Value: Absorbs energy from inductive kickback without affecting steady-state regulation; maintains rail stability during normal operation. | Use Scenario: Shielding high-side N-channel MOSFET gate drivers from Miller-induced voltage spikes during fast switching in motor control inverters. IC Role / Device Role / Timing Role: Low-inductance TVS placed directly across gate-source terminals to clamp dv/dt-induced overshoot. Use Value: Prevents gate oxide breakdown by limiting VGS to ≤16.7 V during transient events, preserving driver reliability over 10⁶ cycles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ12CA | 400 W PPPM (vs. 600 W); same VWM/VBR/VC specs; SMA package (larger footprint, higher RθJA) | Limited to lower-energy transients; less suitable for automotive load dump where 600 W is required | Select when board space allows larger SMA and system-level surge testing confirms 400 W sufficiency |
| 1.5KE12CA | Through-hole DO-201 package; 1500 W PPPM; higher clamping voltage (20.1 V @ 75 A) | Not SMT-compatible; requires manual assembly; higher VC reduces margin for 12 V logic protection | Choose only for legacy through-hole designs or where higher pulse energy must be absorbed despite layout constraints |
Compared with SMAJ12CA and 1.5KE12CA, the SM6T12CAHE3/52 uniquely balances 600 W surge capability, SMB footprint, AEC-Q101 qualification, and low 16.7 V clamping-making it optimal for new automotive and industrial SMT designs requiring validated reliability and compact layout.
Availability
SM6T12CAHE3/52 is available at Aetrix Electronics and suitable for automotive sensor modules, industrial communication interfaces, power supply rail clamping, and MOSFET gate protection requiring stable component supply and AEC-Q101 compliance.
Supply support for SM6T12CAHE3/52 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, efficiency, and application-specific performance.
The SM6T Series was developed specifically for surface-mount transient suppression in automotive, industrial, and telecom systems-prioritizing AEC-Q101 qualification, low-profile packaging, and consistent clamping behavior across temperature and lifetime.
FAQ
What does the "CA" suffix indicate in SM6T12CAHE3/52?
The "CA" suffix in SM6T12CAHE3/52 denotes a bidirectional configuration, meaning the device provides symmetrical transient voltage suppression in both polarities. Unlike unidirectional variants (e.g., SM6T12A), the SM6T12CAHE3/52 has no cathode marking and exhibits identical breakdown and clamping characteristics from anode-to-cathode and cathode-to-anode, making it ideal for AC-coupled or differential signal lines.
Is SM6T12CAHE3/52 qualified for automotive applications?
Yes, SM6T12CAHE3/52 is AEC-Q101 qualified, as confirmed by Vishay's ordering code suffix "HE3". This qualification covers stress tests including high-temperature operating life, temperature cycling, and ESD, validating its suitability for under-hood and cabin electronics in passenger vehicles and commercial vehicles per automotive quality standards.
What is the maximum clamping voltage of SM6T12CAHE3/52 during a surge event?
The maximum clamping voltage of SM6T12CAHE3/52 is 16.7 V when subjected to its rated peak pulse current of 36 A under the standard 10/1000 μs waveform. This value is measured per Figure 1 in Vishay document 88385 and represents the upper limit of voltage seen by protected circuitry during worst-case surge conditions.
Does SM6T12CAHE3/52 require special PCB layout considerations?
Yes, SM6T12CAHE3/52 should be mounted on minimum recommended 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal to achieve specified thermal and pulse power performance. Short, wide traces to ground and protected line minimize parasitic inductance, preserving its low-inductance advantage and ensuring clamping response remains effective for fast transients.
How does the HE3 suffix differ from E3 or M3 in SM6T12CAHE3/52?
The "HE3" suffix in SM6T12CAHE3/52 indicates RoHS-compliant construction with AEC-Q101 qualification, whereas "E3" denotes RoHS-compliant commercial grade only, and "M3" adds halogen-free compliance. The HE3 variant is specifically tested and certified for automotive reliability requirements, including extended temperature cycling and humidity robustness not required for E3/M3 grades.
SM6T12CAHE3/52 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):
- 10.2V
- Voltage - Breakdown (Min):
- 11.4V
- Voltage - Clamping (Max) @ Ipp:
- 16.7V
- Current - Peak Pulse (10/1000µs):
- 36A
- 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)
SM6T12CAHE3/52 FAQ
1.How can I place an order for SM6T12CAHE3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SM6T12CAHE3/52 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 SM6T12CAHE3/52 reliable?
The price and inventory of SM6T12CAHE3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM6T12CAHE3/52 is usually 5 days.
3.What payment methods are accepted for SM6T12CAHE3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM6T12CAHE3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM6T12CAHE3/52?
SM6T12CAHE3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM6T12CAHE3/52 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 SM6T12CAHE3/52?
For technical support, including SM6T12CAHE3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM6T12CAHE3/52 requirements.
6.How does Aetrix verify that SM6T12CAHE3/52 is sourced from the original manufacturer or authorized distributors?
All SM6T12CAHE3/52 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 SM6T12CAHE3/52 meets industry standards.
7.What is the process for return or replacement of SM6T12CAHE3/52?
All SM6T12CAHE3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SM6T12CAHE3/52, 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 SM6T12CAHE3/52 part is unused and in its original packaging.
Return procedure for SM6T12CAHE3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM6T12CAHE3/52 Tags
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