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Vishay General Semiconductor - Diodes Division SM6T12CAHE3_A/I
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- Part No.:
- SM6T12CAHE3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SM6T12CAHE3_A/I.pdf
- Description:
- TVS DIODE 10.2VWM 16.7VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:6,845
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Product details
Overview
SM6T12CAHE3_A/I from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, with 12 V breakdown voltage (VBR = 11.4–12.6 V at 1 mA), 16.7 V maximum clamping voltage (VC) at 36 A peak pulse current, and 600 W peak pulse power rating (10/1000 μs). It is AEC-Q101 qualified and used for ESD and surge protection on automotive sensor signal lines.
For engineers reviewing the SM6T12CAHE3_A/I datasheet, SM6T12CAHE3_A/I pinout, SM6T12CAHE3_A/I application, or SM6T12CAHE3_A/I equivalent, key selection criteria include bidirectional clamping behavior, low clamping ratio (VC/VBR ≈ 1.4), AEC-Q101 qualification status, SMB package thermal resistance (RθJA = 100 °C/W), and compatibility with automated SMT placement.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, delivering identical clamping performance in forward and reverse directions per its CA suffix designation. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<5 μA at 10.2 V stand-off).
The device is rated for 150 °C maximum junction temperature and derates linearly above 25 °C ambient, with thermal resistance of 100 °C/W (junction-to-ambient) on standard 5.0 mm × 5.0 mm copper pads. It meets J-STD-020 MSL Level 1 and JESD201 Class 2 whisker resistance requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 11.4 V / 12.6 V at 1 mA - defines precise voltage threshold where clamping initiates under transient stress |
| VWM | 10.2 V - maximum continuous reverse operating voltage before leakage exceeds 5 μA |
| VC @ IPPM | 16.7 V at 36 A (10/1000 μs) - peak clamped voltage seen by protected circuit during worst-case surge |
| PPPM | 600 W - surge energy handling capacity compatible with ISO 7637-2 Pulse 1/2a/5a and IEC 61000-4-5 Level 3 |
| TJ max | +150 °C - enables operation in under-hood automotive environments without thermal shutdown |
| RθJA | 100 °C/W - determines required PCB copper area for thermal management in high-duty-cycle applications |
| AEC-Q101 | Qualified - confirms reliability for automotive electronics per stress test requirements including HTGB, HTRB, and TCT |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional configuration with no polarity marking. Dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H), matte tin-plated leads solderable per J-STD-002.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry point (bidirectional) | Accepts surge current in either polarity; symmetrical conduction path with cathode |
| Cathode | Transient current exit point (bidirectional) | Completes low-impedance clamping path; no band marking distinguishes bidirectional function |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or differential signal lines without polarity concerns |
| 600 W peak pulse power (10/1000 μs) | Supports robust immunity to load-dump and inductive switching transients in 12 V automotive systems |
| Glass passivated junction | Ensures stable VBR tolerance (±5 %) and low parametric drift over temperature and lifetime |
| MSL Level 1, 260 °C reflow compatible | Allows single-pass lead-free reflow assembly without moisture sensitivity limitations |
| AEC-Q101 qualification (HE3 suffix) | Validates suitability for automotive powertrain, body control, and ADAS sensor interface applications |
Applications
| Automotive Sensor Protection | Industrial CAN Bus Interface |
|---|---|
Use Scenario: Protecting analog output lines of pressure, temperature, and position sensors in engine control modules. IC Role / Device Role / Timing Role: Bidirectional TVS clamping element placed directly at connector entry point. Use Value: Limits transients to ≤16.7 V during ISO 7637-2 Pulse 5a (load dump), preserving ADC input integrity and preventing latch-up. | Use Scenario: Shielding CAN_H/CAN_L differential pair against ESD and fast transient bursts in factory automation nodes. IC Role / Device Role / Timing Role: Low-capacitance (CJ ≈ 200 pF at 0 V) bidirectional clamp on each line. Use Value: Maintains signal integrity up to 1 Mbps while suppressing ±30 kV contact ESD per IEC 61000-4-2 without distorting edge rates. |
| Consumer USB Port Protection | Telecom Power Supply Input |
Use Scenario: Safeguarding VBUS and D+/D− lines in portable docking stations exposed to hot-plug surges. IC Role / Device Role / Timing Role: Secondary-level TVS after primary fuse, placed adjacent to USB controller IC. Use Value: Clamps 8/20 μs surges to <22 V, preventing damage to USB PHY transceivers rated for 5.5 V absolute max. | Use Scenario: Front-end surge suppression on 48 V telecom DC-DC converter inputs subjected to lightning-induced surges. IC Role / Device Role / Timing Role: First-stage protector before upstream TVS array and downstream filtering. Use Value: Absorbs 600 W pulses without degradation, enabling compliance with GR-1089-CORE Level 3 (2 kV ring wave). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ12CA | Same SMB package, 600 W rating, but VBR = 13.3–14.7 V and VC = 19.9 V at 30 A - higher clamping voltage and looser tolerance | Less suitable for tight-margin 12 V rail protection where sub-17 V clamping is mandatory | Select SMAJ12CA only if system margin allows ≥19.9 V transient excursion |
| 1.5KE12CA | Through-hole DO-201 package, same VBR/VC, but 1500 W rating and RθJA > 300 °C/W - incompatible with SMT-only production | Not viable for space-constrained or high-density automotive PCBs requiring surface-mount assembly | Choose 1.5KE12CA only for legacy through-hole designs or prototyping with manual assembly |
Compared with SMAJ12CA and 1.5KE12CA, SM6T12CAHE3_A/I offers tighter VBR tolerance (±5 % vs. ±10 %), lower clamping voltage (16.7 V vs. 19.9 V), and AEC-Q101 qualification - making it the preferred choice for production automotive and high-reliability industrial applications demanding validated reliability and precise voltage limiting.
Availability
SM6T12CAHE3_A/I is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial CAN bus nodes, consumer USB docking stations, and telecom DC-DC front-ends requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for SM6T12CAHE3_A/I 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 automotive-grade qualification.
The SM6T Series is designed specifically for high-volume, high-reliability transient suppression in automotive and industrial environments - optimized for AEC-Q101 compliance, automated SMT assembly, and consistent clamping performance across temperature and life cycle.
FAQ
What is the exact breakdown voltage range for SM6T12CAHE3_A/I?
The SM6T12CAHE3_A/I has a guaranteed breakdown voltage (VBR) range of 11.4 V to 12.6 V measured at 1 mA test current, per Vishay's datasheet Document Number 88385. This ±5 % tolerance ensures predictable clamping onset and is verified per AEC-Q101 test conditions. The SM6T12CAHE3_A/I maintains this specification across its full operating temperature range of –65 °C to +150 °C.
Is SM6T12CAHE3_A/I unidirectional or bidirectional?
SM6T12CAHE3_A/I is a bidirectional transient voltage suppressor, indicated by the "CA" suffix in its part number. It provides symmetrical clamping in both polarities with identical VBR, VC, and leakage characteristics. Unlike unidirectional variants (e.g., SM6T12A), the SM6T12CAHE3_A/I has no cathode band marking and is used where AC signals or differential pairs require protection without polarity constraints.
Does SM6T12CAHE3_A/I meet automotive qualification standards?
Yes, SM6T12CAHE3_A/I is AEC-Q101 qualified, as confirmed by its "HE3" suffix and documentation in Vishay's SM6T series datasheet. It undergoes stress testing including high-temperature reverse bias (HTRB), high-temperature gate bias (HTGB), temperature cycling (TCT), and mechanical shock - validating its suitability for automotive powertrain, body electronics, and ADAS sensor applications.
What is the maximum clamping voltage of SM6T12CAHE3_A/I under surge conditions?
The SM6T12CAHE3_A/I exhibits a maximum clamping voltage (VC) of 16.7 V when subjected to a 10/1000 μs waveform at its rated peak pulse current of 36 A. This value is measured per Figure 1 in the official datasheet and represents the highest voltage imposed on the protected circuit during standardized surge events - critical for ensuring downstream ICs remain within their absolute maximum ratings.
What package type and dimensions does SM6T12CAHE3_A/I use?
SM6T12CAHE3_A/I uses the SMB (DO-214AA) surface-mount package with overall dimensions of 4.57 mm × 3.94 mm × 2.20 mm (length × width × height). Its matte tin-plated leads comply with J-STD-002 solderability requirements, and the molding compound meets UL 94 V-0 flammability rating. The SM6T12CAHE3_A/I is designed for pick-and-place assembly and reflow-compatible with lead-free processes up to 260 °C.
SM6T12CAHE3_A/I 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/I FAQ
1.How can I place an order for SM6T12CAHE3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SM6T12CAHE3_A/I 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/I reliable?
The price and inventory of SM6T12CAHE3_A/I 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/I is usually 5 days.
3.What payment methods are accepted for SM6T12CAHE3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM6T12CAHE3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM6T12CAHE3_A/I?
SM6T12CAHE3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM6T12CAHE3_A/I 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/I?
For technical support, including SM6T12CAHE3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM6T12CAHE3_A/I requirements.
6.How does Aetrix verify that SM6T12CAHE3_A/I is sourced from the original manufacturer or authorized distributors?
All SM6T12CAHE3_A/I 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/I meets industry standards.
7.What is the process for return or replacement of SM6T12CAHE3_A/I?
All SM6T12CAHE3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with SM6T12CAHE3_A/I, 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/I part is unused and in its original packaging.
Return procedure for SM6T12CAHE3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM6T12CAHE3_A/I Tags
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