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Vishay General Semiconductor - Diodes Division 1.5SMC12CA-E3/9AT
- Part No.:
- 1.5SMC12CA-E3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC12CA-E3/9AT.pdf
- Description:
- TVS DIODE 10.2VWM 16.7VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:6,855
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Product details
Overview
1.5SMC12CA-E3/9AT from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMC (DO-214AB) package, designed for high-energy surge protection with 1500 W peak pulse power (10/1000 μs), 12 V breakdown voltage (VBR = 11.4–12.6 V at IT = 1.0 mA), and clamping voltage of 16.7 V at 89.8 A peak pulse current. It protects sensitive signal lines and power rails in automotive sensor interfaces and industrial control inputs.
For engineers reviewing the 1.5SMC12CA-E3/9AT datasheet, 1.5SMC12CA-E3/9AT pinout, 1.5SMC12CA-E3/9AT application, or 1.5SMC12CA-E3/9AT equivalent, key selection criteria include bidirectional clamping capability, low clamping ratio (VC/VBR ≈ 1.4), RoHS-compliant matte tin terminations, and MSL Level 1 moisture sensitivity rating for reflow compatibility.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, delivering identical clamping performance regardless of transient polarity-critical for AC-coupled data lines and differential bus protection. Its glass-passivated junction ensures stable leakage (<5.0 μA at VWM = 10.2 V) and fast response time (<1.0 ns), enabling effective suppression of ESD (IEC 61000-4-2) and lightning-induced surges (IEC 61000-4-5).
The device features low incremental surge resistance (Rdyn ≈ 0.18 Ω derived from ΔVC/ΔIPPM) and thermal resistance of 75 °C/W (junction-to-ambient, on recommended 8.0 mm × 8.0 mm copper pads), supporting reliable operation up to TJ = 150 °C. It meets JESD201 Class 2 whisker resistance and is rated for repetitive 0.01% duty cycle pulses.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 11.4 V / 12.6 V at IT = 1.0 mA - defines precise breakdown threshold for bidirectional clamping initiation |
| VWM | 10.2 V - maximum continuous reverse stand-off voltage before leakage exceeds 5.0 μA |
| VC @ IPPM | 16.7 V at 89.8 A - clamping voltage under 10/1000 μs surge, limiting downstream voltage stress |
| PPPM | 1500 W - peak pulse power handling capacity, enabling robust protection against high-energy transients |
| IPPM | 89.8 A - maximum non-repetitive peak pulse current supported with defined waveform |
| TJ max. | +150 °C - maximum junction temperature, allowing operation in under-hood automotive and industrial environments |
| Package | SMC (DO-214AB) - industry-standard surface-mount outline with 3.2 mm minimum body height and 7.75 mm length |
Pinout & Package
Package: SMC (DO-214AB), molded plastic case with matte tin-plated leads, UL 94 V-0 rated compound, MSL Level 1 (260 °C peak reflow). Bidirectional construction has no polarity marking; terminals are symmetrical and interchangeable.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bidirectional surge path | Either terminal serves as anode or cathode depending on transient polarity; no marking required |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Identical VBR, VC, and IPPM in both directions-enables single-device protection of AC signals and differential buses |
| 1500 W peak pulse power | Withstands high-energy 10/1000 μs surges common in automotive load-dump and industrial lightning tests |
| Glass passivated junction | Ensures stable leakage current (<5 μA) and long-term reliability under thermal cycling and humidity stress |
| MSL Level 1 rating | Allows standard Pb-free reflow without baking-reduces manufacturing complexity and cost |
| RoHS-compliant, matte tin terminations | Compatible with J-STD-002 solderability and JESD22-B102 wetting balance testing |
Applications
| Automotive Sensor Interface Protection | Industrial CAN Bus Transceiver Protection |
|---|---|
Use Scenario: Protecting LIN/CAN physical layer transceivers and analog sensor outputs (e.g., pressure, temperature) from battery dump and ESD events in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional TVS placed directly at connector entry point to clamp transients before they reach transceiver IC input pins. Use Value: Limits induced voltage to ≤16.7 V during 89.8 A surge, preventing latch-up or permanent damage to 12 V-rated transceivers like TCAN1042 or SN65HVD230. |
Use Scenario: Safeguarding differential CAN H/L lines in factory automation gateways exposed to motor drive noise and ground bounce. IC Role / Device Role / Timing Role: Symmetric clamping device across CAN H–CAN L pair, absorbing common-mode surges while preserving signal integrity. Use Value: Maintains <5.0 μA leakage at 10.2 V stand-off, avoiding DC bias shift on 120 Ω termination; clamps <1 ns to protect ISO 11898-2 compliant receivers. |
| Consumer USB 2.0 Data Line Protection | Telecom DSL Line Surge Suppression |
Use Scenario: Shielding USB D+/D− lines in set-top boxes and smart displays from human-body-model (HBM) ESD and cable discharge events. IC Role / Device Role / Timing Role: Low-capacitance TVS (CJ ≈ 200 pF typical at 0 V) placed adjacent to USB controller IC to minimize signal distortion. Use Value: Clamps 15 kV contact ESD per IEC 61000-4-2 to <17 V within nanoseconds, preventing data corruption or PHY reset without degrading 480 Mbps signaling. |
Use Scenario: Front-end surge protection for ADSL/VDSL line cards in DSLAMs and customer premises equipment subjected to lightning-induced longitudinal surges. IC Role / Device Role / Timing Role: Primary bidirectional protector on tip/ring pair before hybrid transformer and line driver IC. Use Value: Absorbs 1500 W peak energy from 10/1000 μs surges per ITU-T K.20/K.21, reducing secondary protection burden and extending system MTBF. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bidirectional TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ12CA | Same VBR (11.4–12.6 V), lower PPPM = 600 W, SMB (DO-214AA) package (smaller footprint, higher RθJA = 85 °C/W) | Limited to lower-energy transients; unsuitable for automotive load-dump or telecom lightning standards | Select when board space is constrained and surge threat level is limited to IEC 61000-4-2 only |
| 1.5KE12CA | Same VBR and PPPM, but axial-leaded DO-201AE package-requires through-hole mounting and manual assembly | Not compatible with automated SMT lines; higher inductance limits high-frequency transient response | Choose only for legacy through-hole designs or prototyping where reflow compatibility is not required |
Compared with SMBJ12CA and 1.5KE12CA, the 1.5SMC12CA-E3/9AT delivers identical clamping performance in a surface-mount SMC package optimized for automated production, thermal management on PCB copper pads, and compliance with AEC-Q101-qualified variants-making it the preferred choice for volume automotive and industrial SMT applications.
Availability
1.5SMC12CA-E3/9AT is available at Aetrix Electronics and suitable for automotive sensor modules, industrial CAN gateways, consumer USB peripherals, and telecom DSL line cards requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for 1.5SMC12CA-E3/9AT 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, efficiency, and application-specific optimization.
The 1.5SMC Series targets high-power transient suppression in harsh environments-designed for automotive, industrial, and telecom systems where robustness, repeatability, and AEC-Q101 qualification matter.
FAQ
What does the "CA" suffix indicate in 1.5SMC12CA-E3/9AT?
The "CA" suffix in 1.5SMC12CA-E3/9AT denotes a bidirectional configuration-meaning the device provides symmetrical transient voltage suppression in both forward and reverse directions. Unlike unidirectional "A" variants, this part has no cathode marking and delivers identical breakdown (11.4–12.6 V), clamping (16.7 V), and surge current (89.8 A) characteristics regardless of polarity, making it ideal for AC-coupled or differential signal protection.
Is 1.5SMC12CA-E3/9AT RoHS-compliant and lead-free?
Yes, 1.5SMC12CA-E3/9AT is RoHS-compliant and lead-free. The "E3" suffix confirms compliance with EU RoHS Directive 2011/65/EU and associated exemptions. Its matte tin-plated leads meet J-STD-002 solderability requirements and JESD22-B102 wetting balance testing, and it is qualified for Pb-free reflow up to 260 °C (MSL Level 1).
What is the maximum clamping voltage of 1.5SMC12CA-E3/9AT under surge conditions?
The maximum clamping voltage (VC) of 1.5SMC12CA-E3/9AT is 16.7 V, measured at its peak pulse current (IPPM) of 89.8 A under the standardized 10/1000 μs double-exponential waveform. This value represents the upper limit of voltage imposed on protected circuitry during worst-case surge events and is critical for ensuring downstream ICs remain within their absolute maximum ratings.
Can 1.5SMC12CA-E3/9AT be used in automotive applications?
Yes, 1.5SMC12CA-E3/9AT is suitable for automotive applications. While the base "E3" variant is commercial-grade, the same die is used in AEC-Q101-qualified versions (e.g., 1.5SMC12CAHE3_A). Its 150 °C maximum junction temperature, glass-passivated junction, and robust surge capability align with automotive environmental and reliability requirements-including protection of sensor interfaces and body-control modules.
What is the standoff voltage (VWM) of 1.5SMC12CA-E3/9AT, and why does it matter?
The standoff voltage (VWM) of 1.5SMC12CA-E3/9AT is 10.2 V-the maximum continuous reverse voltage it can block without exceeding 5.0 μA leakage current. This parameter ensures the device remains inactive during normal operation (e.g., 12 V automotive supply or 5 V logic rails), preventing power loss or signal interference while remaining ready to clamp transients above this threshold.
1.5SMC12CA-E3/9AT 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:
- Active
- 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCJ)
1.5SMC12CA-E3/9AT FAQ
1.How can I place an order for 1.5SMC12CA-E3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC12CA-E3/9AT 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 1.5SMC12CA-E3/9AT reliable?
The price and inventory of 1.5SMC12CA-E3/9AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC12CA-E3/9AT is usually 5 days.
3.What payment methods are accepted for 1.5SMC12CA-E3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC12CA-E3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC12CA-E3/9AT?
1.5SMC12CA-E3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC12CA-E3/9AT 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 1.5SMC12CA-E3/9AT?
For technical support, including 1.5SMC12CA-E3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC12CA-E3/9AT requirements.
6.How does Aetrix verify that 1.5SMC12CA-E3/9AT is sourced from the original manufacturer or authorized distributors?
All 1.5SMC12CA-E3/9AT 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 1.5SMC12CA-E3/9AT meets industry standards.
7.What is the process for return or replacement of 1.5SMC12CA-E3/9AT?
All 1.5SMC12CA-E3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC12CA-E3/9AT, 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 1.5SMC12CA-E3/9AT part is unused and in its original packaging.
Return procedure for 1.5SMC12CA-E3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC12CA-E3/9AT Tags
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