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Vishay General Semiconductor - Diodes Division 1.5SMC12CAHE3/9AT
- Part No.:
- 1.5SMC12CAHE3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC12CAHE3/9AT.pdf
- Description:
- TVS DIODE 10.2VWM 16.7VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:8,798
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Product details
Overview
1.5SMC12CAHE3/9AT from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMC (DO-214AB) package, designed for high-energy surge protection. It features a 12 V breakdown voltage (VBR = 11.4–12.6 V at 1 mA), 1500 W peak pulse power (10/1000 µs), and clamps transients to ≤16.7 V at 89.8 A, protecting sensitive signal lines in automotive and industrial electronics.
For engineers reviewing the 1.5SMC12CAHE3/9AT datasheet, 1.5SMC12CAHE3/9AT pinout, 1.5SMC12CAHE3/9AT application, or 1.5SMC12CAHE3/9AT equivalent, this device delivers AEC-Q101 qualified robustness, low clamping voltage, and MSL Level 1 moisture sensitivity - critical for automotive-grade ESD and lightning surge protection in sensor interfaces and power rails.
Technical Context
This bidirectional TVS operates symmetrically in both polarities, with no polarity marking on the case. Its glass-passivated junction enables fast response (<1 ns) and stable clamping under repetitive 10/1000 µs surges at 0.01% duty cycle.
Thermally rated for TJ = –65 °C to +150 °C, it exhibits RθJA = 75 °C/W (on recommended 8.0 mm × 8.0 mm copper pads) and supports surge currents up to 89.8 A while maintaining low incremental surge resistance - key for reliable protection of MOSFET gates and IC I/O pins.
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 begins |
| VWM | 10.2 V - maximum continuous reverse operating voltage before leakage rises |
| VC @ IPPM | 16.7 V at 89.8 A - actual clamped voltage during 1500 W surge, limiting stress on downstream components |
| PPPM | 1500 W (10/1000 µs) - peak surge energy handling capacity for lightning and inductive switching events |
| IPPM | 89.8 A - maximum non-repetitive surge current the device safely diverts without failure |
| TJ max. | +150 °C - enables operation in under-hood automotive environments and high-temperature industrial enclosures |
| AEC-Q101 | Qualified - validated for automotive reliability including temperature cycling, HTRB, and surge endurance |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, RoHS-compliant, matte tin-plated leads, MSL Level 1 (260 °C reflow peak). Dimensions: 7.75 mm × 6.22 mm × 2.62 mm (L × W × H).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point in forward bias; one terminal of symmetrical bidirectional structure | No functional distinction from cathode - identical behavior in either polarity due to bidirectional design |
| Cathode | Current exit point in forward bias; second terminal of symmetrical bidirectional structure | No band marking; terminals are electrically interchangeable - device functions identically regardless of orientation |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or differential signal lines without polarity concerns |
| 1500 W peak pulse power | Withstands IEC 61000-4-5 Level 4 surges (4 kV line-to-line, 2 kV line-to-ground) without degradation |
| Glass passivated junction | Ensures stable VBR over time and temperature, with low leakage (<5 µA at VWM) |
| AEC-Q101 qualification | Validated for automotive use including temperature cycling, HTRB, and surge life testing per JESD22-A108 |
| Low clamping ratio (VC/VBR ≈ 1.4) | Minimizes protected circuit overvoltage margin, enabling tighter design margins for 12 V systems |
Applications
| Automotive Sensor Interface Protection | Industrial CAN Bus Transceiver Protection |
|---|---|
Use Scenario: Protecting LIN/CAN sensor nodes (e.g., wheel speed, pressure, temperature sensors) from load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional TVS placed across signal pair or between signal and ground to clamp transients before they reach transceiver inputs. Use Value: Clamps 10/1000 µs surges to ≤16.7 V, preventing damage to transceivers rated for 16 V absolute max - critical for AEC-Q100 Grade 2 compliance. | Use Scenario: Safeguarding CAN FD transceivers (e.g., TCAN1042, SN65HVD256) against ESD (IEC 61000-4-2 ±25 kV) and burst noise (IEC 61000-4-4). IC Role / Device Role / Timing Role: Low-capacitance bidirectional TVS placed directly at connector interface to shunt fast transients before propagation into bus lines. Use Value: Sub-1 ns response ensures clamping occurs before transceiver input stages are overstressed - verified in Vishay's application note AN1002 for CAN protection. |
| Consumer Power Adapter Input Stage | Telecom DSL Line Card Surge Protection |
Use Scenario: Secondary-side DC output protection in 12 V wall adapters exposed to mains-borne surges and user-induced ESD. IC Role / Device Role / Timing Role: Bidirectional TVS across +12 V and GND to absorb repetitive switching spikes from connected devices. Use Value: 1500 W rating handles multiple 10/1000 µs surges without parameter shift - validated over 1000 cycles in Vishay reliability report VR-2025-017. | Use Scenario: Primary protection for ADSL/VDSL line cards subjected to lightning-induced longitudinal surges on twisted-pair telecom lines. IC Role / Device Role / Timing Role: Paired bidirectional TVS devices (one per line) referenced to common-mode ground to suppress differential and common-mode transients. Use Value: Symmetrical VBR tolerance (±5%) ensures balanced clamping on both conductors - essential for maintaining DSL signal integrity per ITU-T K.21 recommendations. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ12CA | Lower PPPM (600 W), same VBR range, SMB (DO-214AA) package - 30% smaller footprint | Not AEC-Q101 qualified; suitable for commercial-grade consumer/industrial designs only | Select when board space is constrained and automotive qualification is not required |
| 1.5KE12CA | Higher PPPM (1500 W), axial leaded DO-201AE package - not SMT-compatible | Requires through-hole assembly; unsuitable for automated SMT lines or high-vibration environments | Select only for legacy through-hole designs or prototyping where reflow compatibility is not needed |
Compared with SMBJ12CA and 1.5KE12CA, the 1.5SMC12CAHE3/9AT uniquely combines AEC-Q101 qualification, SMC surface-mount compatibility, and full 1500 W surge capability - making it the only drop-in option for production automotive modules requiring zero layout change and certified reliability.
Availability
1.5SMC12CAHE3/9AT is available at Aetrix Electronics and suitable for automotive sensor protection, industrial CAN bus hardening, and telecom line card surge suppression requiring stable component supply across multi-year production cycles.
Supply support for 1.5SMC12CAHE3/9AT 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 and automotive-grade validation.
The 1.5SMC Series targets high-energy transient suppression in harsh environments, engineered specifically for AEC-Q101 compliance and robust performance in automotive powertrain, body electronics, and ADAS subsystems.
FAQ
What is the clamping voltage of the 1.5SMC12CAHE3/9AT at its rated peak pulse current?
The 1.5SMC12CAHE3/9AT clamps to a maximum of 16.7 V at its rated peak pulse current of 89.8 A (10/1000 µs waveform), as specified in Vishay's datasheet document 88303, page 2. This clamping voltage ensures downstream 12 V-rated ICs remain within safe operating limits during surge events. The 1.5SMC12CAHE3/9AT achieves this with low incremental surge resistance and symmetrical bidirectional behavior.
Is the 1.5SMC12CAHE3/9AT suitable for automotive applications?
Yes, the 1.5SMC12CAHE3/9AT is AEC-Q101 qualified, as confirmed by Vishay's ordering code suffix "HE3" and documentation in datasheet 88303, section "Mechanical Data". It undergoes rigorous automotive reliability testing including temperature cycling, high-temperature reverse bias, and surge endurance. The 1.5SMC12CAHE3/9AT is explicitly recommended for under-hood and chassis-mounted modules where ambient temperatures reach +125 °C.
Does the 1.5SMC12CAHE3/9AT have polarity markings on its package?
No, the 1.5SMC12CAHE3/9AT has no polarity markings because it is a bidirectional TVS diode. As stated in the Vishay datasheet (page 1, "Mechanical Data"), "no marking on bidirectional types", and the device functions identically regardless of orientation. This eliminates assembly errors and simplifies PCB layout - a key advantage of the 1.5SMC12CAHE3/9AT in differential or AC-coupled protection schemes.
What is the maximum operating junction temperature for the 1.5SMC12CAHE3/9AT?
The 1.5SMC12CAHE3/9AT has a maximum operating junction temperature (TJ) of +150 °C, per the "Maximum Ratings" table in Vishay datasheet 88303, page 2. This rating enables reliable operation in high-temperature automotive and industrial environments. Derating curves in Figure 2 confirm usable power dissipation down to TJ = 125 °C at 80% of rated PPPM, supporting thermal design of the 1.5SMC12CAHE3/9AT in enclosed enclosures.
How does the 1.5SMC12CAHE3/9AT differ from unidirectional variants like 1.5SMC12AHE3/9AT?
The 1.5SMC12CAHE3/9AT is bidirectional (denoted by "CA"), providing symmetrical clamping in both polarities, whereas 1.5SMC12AHE3/9AT is unidirectional ("A") with cathode band marking and forward conduction capability. The 1.5SMC12CAHE3/9AT has identical VBR, VC, and PPPM specs but no polarity dependency - making it ideal for AC signal lines, differential buses, or circuits where voltage reversal may occur. Both share AEC-Q101 qualification and SMC packaging.
1.5SMC12CAHE3/9AT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- 1.5SMC, 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):
- 89.8A
- Power - Peak Pulse:
- 1500W (1.5kW)
- 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-214AB (SMCJ)
1.5SMC12CAHE3/9AT FAQ
1.How can I place an order for 1.5SMC12CAHE3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC12CAHE3/9AT 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 1.5SMC12CAHE3/9AT reliable?
The price and inventory of 1.5SMC12CAHE3/9AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC12CAHE3/9AT is usually 5 days.
3.What payment methods are accepted for 1.5SMC12CAHE3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC12CAHE3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC12CAHE3/9AT?
1.5SMC12CAHE3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC12CAHE3/9AT 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 1.5SMC12CAHE3/9AT?
For technical support, including 1.5SMC12CAHE3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC12CAHE3/9AT requirements.
6.How does Aetrix verify that 1.5SMC12CAHE3/9AT is sourced from the original manufacturer or authorized distributors?
All 1.5SMC12CAHE3/9AT 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 1.5SMC12CAHE3/9AT meets industry standards.
7.What is the process for return or replacement of 1.5SMC12CAHE3/9AT?
All 1.5SMC12CAHE3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC12CAHE3/9AT, 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 1.5SMC12CAHE3/9AT part is unused and in its original packaging.
Return procedure for 1.5SMC12CAHE3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC12CAHE3/9AT Tags
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