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Vishay General Semiconductor - Diodes Division SM6T12CAHE3_A/H
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- Part No.:
- SM6T12CAHE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SM6T12CAHE3_A/H.pdf
- Description:
- TVS DIODE 10.2VWM 16.7VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:6,144
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Product details
Overview
SM6T12CAHE3_A/H 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), 16.7 V clamping voltage at 36 A peak pulse current, and 600 W peak pulse power with 10/1000 μs waveform. It provides robust ESD and surge protection for automotive sensor signal lines, I/O interfaces, and MOSFET gate drivers.
For engineers reviewing the SM6T12CAHE3_A/H datasheet, SM6T12CAHE3_A/H pinout, SM6T12CAHE3_A/H application, or SM6T12CAHE3_A/H equivalent, key selection criteria include bidirectional clamping behavior, AEC-Q101 qualification, low clamping ratio (1.64×VWM), TJ = –65 °C to +150 °C operating range, and compatibility with automated SMT placement on standard PCB pad layouts.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, delivering identical breakdown (VBR min = 11.4 V, max = 12.6 V at IT = 1 mA) and clamping performance in either direction. Its glass-passivated junction ensures stable leakage (<5 μA at VWM) and low dynamic impedance under transient stress.
Designed for high-reliability automotive applications, SM6T12CAHE3_A/H meets AEC-Q101 stress testing requirements and features MSL Level 1 moisture sensitivity with 260 °C lead-free reflow compatibility. Thermal resistance is RθJA = 100 °C/W (typ.) on 5.0 mm × 5.0 mm copper pads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 10.2 V - Maximum continuous reverse stand-off voltage before clamping begins |
| VBR (min/max) | 11.4 V / 12.6 V at 1 mA - Confirmed bidirectional breakdown threshold with tight tolerance |
| VC @ IPPM | 16.7 V at 36 A (10/1000 μs) - Clamping voltage limits downstream IC stress during surge events |
| PPPM | 600 W - Peak transient energy handling capability per standardized waveform |
| TJ Range | –65 °C to +150 °C - Full automotive-grade junction temperature operation |
| Package | SMB (DO-214AA) - Industry-standard surface-mount outline with 2.20 mm height and 5.59 mm length |
| AEC-Q101 | Qualified - Validated for automotive electronics per stress test requirements |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case with matte tin-plated leads; polarity unmarked for bidirectional configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bidirectional terminal pair | No polarity marking required; terminals interchangeable for AC-coupled or differential line protection |
| Case | Non-electrical mechanical interface | Plastic body provides insulation and mechanical mounting; no thermal or electrical connection to die |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power | Enables protection against ISO 7637-2 Pulse 1/2a/3a and IEC 61000-4-5 Level 3 surges without derating |
| Glass-passivated junction | Ensures long-term stability of leakage current and breakdown voltage over temperature and life cycle |
| Low clamping ratio (1.64×VWM) | Minimizes voltage overshoot during transients, preserving margin for 12 V rail-tolerant ICs |
| MSL Level 1, 260 °C peak | Supports single-pass lead-free reflow without preconditioning or baking |
| AEC-Q101 qualification | Validates reliability for automotive powertrain, chassis, and ADAS subsystems |
Applications
| Automotive Sensor Protection | Industrial CAN Bus Interface |
|---|---|
Use Scenario: Protecting analog output lines of pressure, temperature, and position sensors in engine control modules exposed to load dump and inductive switching noise. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed directly at connector entry point to shunt transients before reaching ADC input or signal conditioner. Use Value: Maintains signal integrity by limiting transient excursions to ≤16.7 V, preventing latch-up or damage to 12 V-tolerant op-amps and microcontrollers. | Use Scenario: Safeguarding CANH/CANL differential pairs in industrial PLCs and motor drives subjected to ground bounce and EFT bursts. IC Role / Device Role / Timing Role: Symmetrical TVS pair (one per line) referenced to common-mode ground, absorbing common-mode surges while preserving differential signaling integrity. Use Value: Enables uninterrupted CAN communication during 1 kV/500 A 10/1000 μs surges due to low dynamic impedance and matched bidirectional response. |
| Consumer USB Port ESD Protection | Power Supply Input Stage Clamp |
Use Scenario: Secondary-level ESD protection on VBUS and D+/D– lines of USB 2.0 ports in automotive infotainment head units. IC Role / Device Role / Timing Role: Fast-response clamp placed after primary polymer PTC, suppressing CDM and HBM discharges before reaching USB transceiver IC. Use Value: Achieves <1 ns response time and <5 μA leakage at 5.5 V, ensuring no impact on USB signal rise/fall times or eye diagram compliance. | Use Scenario: Overvoltage clamp on 12 V DC input rails of embedded controllers powering solenoids, relays, and actuators. IC Role / Device Role / Timing Role: Parallel-connected TVS across bulk capacitor to absorb inductive kickback when switching inductive loads. Use Value: Handles repetitive 100 A IFSM surges without degradation, extending system uptime in factory automation equipment. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ12CA | Same VWM (10.2 V) and VC (16.7 V), but 400 W PPPM rating and SMA package (higher RθJA) | Limited to lower-energy transients; less suitable for automotive load dump where 600 W is required | Select SM6T12CAHE3_A/H when 600 W surge handling and AEC-Q101 qualification are mandatory |
| 1.5KE12CA | Through-hole DO-201 package, same 12 V rating, but 1500 W PPPM and higher capacitance (≈100 pF) | Not SMT-compatible; unsuitable for high-density PCBs or automated assembly | Choose SM6T12CAHE3_A/H for surface-mount designs requiring automotive qualification and compact footprint |
Compared with SMAJ12CA and 1.5KE12CA, SM6T12CAHE3_A/H uniquely combines 600 W surge rating, SMB footprint, AEC-Q101 qualification, and MSL Level 1 reflow compatibility-making it optimal for space-constrained, high-reliability automotive and industrial SMT applications.
Availability
SM6T12CAHE3_A/H is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial CAN bus nodes, consumer USB power delivery circuits, and 12 V DC input stage protection requiring stable component supply and long-term lifecycle support.
Supply support for SM6T12CAHE3_A/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 protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The SM6T Series is engineered for high-energy transient suppression in automotive, industrial, and computing systems-designed to meet stringent AEC-Q101, JEDEC, and IEC standards while supporting automated manufacturing.
FAQ
What is the clamping voltage of SM6T12CAHE3_A/H under a 10/1000 μs surge?
The SM6T12CAHE3_A/H clamps to a maximum of 16.7 V when subjected to its rated peak pulse current of 36 A with a 10/1000 μs waveform. This value is measured per Figure 1 in the Vishay datasheet 88385 and reflects worst-case performance across temperature and process variation. The clamping voltage remains consistent in both directions due to its bidirectional construction, making SM6T12CAHE3_A/H suitable for protecting AC-coupled or differential signal paths where polarity reversal may occur.
Is SM6T12CAHE3_A/H qualified for automotive use?
Yes, SM6T12CAHE3_A/H is AEC-Q101 qualified, as confirmed by Vishay's ordering code suffix "HE3" and documentation in datasheet 88385. This qualification covers stress tests including high-temperature operating life, temperature cycling, and unbiased highly accelerated stress testing. The device is intended for automotive applications such as body control modules, ADAS sensor interfaces, and infotainment power supplies-where SM6T12CAHE3_A/H delivers validated reliability beyond commercial-grade alternatives.
What does the "CA" suffix indicate in SM6T12CAHE3_A/H?
The "CA" suffix in SM6T12CAHE3_A/H designates a bidirectional configuration, meaning the device provides symmetrical transient suppression for both positive and negative voltage excursions. Unlike unidirectional variants (e.g., SM6T12A), SM6T12CAHE3_A/H has no cathode band marking and exhibits identical VBR, VC, and leakage characteristics in either polarity. This makes SM6T12CAHE3_A/H ideal for protecting balanced lines like CAN, RS-485, or audio inputs where polarity is undefined or alternating.
What is the thermal resistance of SM6T12CAHE3_A/H in standard mounting conditions?
The typical junction-to-ambient thermal resistance (RθJA) of SM6T12CAHE3_A/H is 100 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal, as specified in the Vishay SM6T datasheet. This value assumes still air convection and defines the steady-state temperature rise above ambient at 5.0 W continuous power dissipation. For pulsed operation, thermal impedance curves (Figure 5) show significantly lower effective resistance-enabling SM6T12CAHE3_A/H to safely absorb 600 W transients without exceeding TJ(max) = 150 °C.
Does SM6T12CAHE3_A/H require special PCB layout considerations?
Yes-optimal performance of SM6T12CAHE3_A/H requires adherence to Vishay's recommended mounting pad layout: minimum 0.086" (2.18 mm) pad width, 0.060" (1.52 mm) pad length, and 0.220" (5.59 mm) overall center-to-center spacing. Short, wide traces between SM6T12CAHE3_A/H and protected node minimize inductance, preserving clamping speed. Avoid thermal relief on pads to maintain low RθJA; use solid copper pours connected directly to each terminal for enhanced heat dissipation during repetitive surges.
SM6T12CAHE3_A/H 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:
- Obsolete
- 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_A/H FAQ
1.How can I place an order for SM6T12CAHE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SM6T12CAHE3_A/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 SM6T12CAHE3_A/H reliable?
The price and inventory of SM6T12CAHE3_A/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM6T12CAHE3_A/H is usually 5 days.
3.What payment methods are accepted for SM6T12CAHE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM6T12CAHE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM6T12CAHE3_A/H?
SM6T12CAHE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM6T12CAHE3_A/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 SM6T12CAHE3_A/H?
For technical support, including SM6T12CAHE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM6T12CAHE3_A/H requirements.
6.How does Aetrix verify that SM6T12CAHE3_A/H is sourced from the original manufacturer or authorized distributors?
All SM6T12CAHE3_A/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 SM6T12CAHE3_A/H meets industry standards.
7.What is the process for return or replacement of SM6T12CAHE3_A/H?
All SM6T12CAHE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with SM6T12CAHE3_A/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 SM6T12CAHE3_A/H part is unused and in its original packaging.
Return procedure for SM6T12CAHE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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