My Inquiry
My Account
Vishay General Semiconductor - Diodes Division 1.5SMC11CA-M3/9AT
- Part No.:
- 1.5SMC11CA-M3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC11CA-M3/9AT.pdf
- Description:
- TVS DIODE 9.4VWM 15.6VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:5,654
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
1.5SMC11CA-M3/9AT from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMC (DO-214AB) package, designed for high-energy surge protection on signal and power lines. It features a 11 V standoff voltage (VWM), 12.1 V minimum breakdown voltage (VBR), 15.6 V maximum clamping voltage (VC) at 96.2 A peak pulse current, and 1500 W peak pulse power rating with 10/1000 µs waveform - used to protect automotive sensor interfaces and industrial I/O circuits against lightning-induced transients.
For engineers reviewing the 1.5SMC11CA-M3/9AT datasheet, 1.5SMC11CA-M3/9AT pinout, 1.5SMC11CA-M3/9AT application, or 1.5SMC11CA-M3/9AT equivalent, key selection criteria include bidirectional clamping symmetry, low clamping ratio (VC/VWM = 1.42), halogen-free RoHS compliance (M3 suffix), MSL Level 1 moisture sensitivity, and AEC-Q101 qualification readiness via HM3 variant.
Technical Context
This bidirectional TVS operates symmetrically in both polarities, delivering identical clamping performance regardless of transient polarity - critical for AC-coupled or floating signal lines. Its glass-passivated junction ensures stable VBR tolerance (±5% typical) and low leakage (<5 µA at 9.4 V), while the low incremental surge resistance enables rapid energy dissipation during 10/1000 µs surges.
The device is rated for 150 °C maximum junction temperature and exhibits a VBR temperature coefficient of +0.075 %/°C, enabling predictable derating above 25 °C ambient. Thermal resistance from junction-to-lead (RθJL) is 15 °C/W, supporting reliable operation under repetitive surge conditions when mounted on 8.0 mm × 8.0 mm copper pads per terminal.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 9.4 V - Maximum continuous reverse voltage before significant conduction; defines operating margin below clamping threshold. |
| VBR (Breakdown Voltage) | 10.5–11.6 V at 1 mA - Voltage at which device enters avalanche; ensures precise, repeatable turn-on during transients. |
| VC (Clamping Voltage) | 15.6 V at 96.2 A (10/1000 µs) - Peak voltage seen by protected circuit; limits stress on downstream ICs like microcontrollers or RS-485 transceivers. |
| PPPM (Peak Pulse Power) | 1500 W - Energy-handling capacity for standardized surge waveforms; supports IEC 61000-4-5 Level 4 compliance with proper layout. |
| IPPM (Peak Pulse Current) | 96.2 A - Maximum non-repetitive surge current the device can safely divert without degradation. |
| TJmax | 150 °C - Maximum allowable junction temperature; enables use in under-hood automotive environments with thermal design margin. |
| Package | SMC (DO-214AB) - Surface-mount package with 7.75 mm × 6.22 mm footprint and 2.62 mm height; optimized for automated placement and thermal pad attachment. |
Pinout & Package
SMC (DO-214AB) package: molded plastic body with two coplanar J-bend leads; no polarity marking for bidirectional types; terminals are matte tin-plated and solderable per J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bidirectional avalanche junction | No functional distinction between terminals; either lead may connect to line or ground - enables flexible PCB routing for differential or AC signals. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Identical VBR and VC in both directions - eliminates need for polarity-aware placement in AC or floating bus protection. |
| 1500 W peak pulse power | Handles IEC 61000-4-5 4 kV surge (line-earth) with margin when paired with series impedance - reduces need for multi-stage protection. |
| Halogen-free & RoHS-compliant (M3) | Meets IPC-1752A material declaration requirements and JEDEC J-STD-020 MSL Level 1 - supports green manufacturing and reflow compatibility. |
| Low clamping ratio (VC/VWM) | 1.66 - Minimizes overvoltage exposure to protected ICs; improves immunity margin for 3.3 V or 5 V logic interfaces. |
| AEC-Q101 qualification path | HM3 suffix variants available - enables drop-in qualification for automotive powertrain and body electronics without redesign. |
Applications
| Automotive Sensor Interface | Industrial RS-485 Bus |
|---|---|
|
Use Scenario: Protecting LIN/CAN sensor nodes (e.g., temperature, pressure) from load-dump and ISO 7637-2 pulses in vehicle cabins. IC Role / Device Role / Timing Role: Bidirectional TVS placed across signal pair (e.g., LIN bus) and chassis ground to clamp fast transients before they reach the transceiver input stage. Use Value: Maintains signal integrity during 100 V/50 ms load dump events by limiting bus voltage to ≤15.6 V - prevents latch-up or ESD damage in TJA1020-class transceivers. |
Use Scenario: Safeguarding factory automation RS-485 nodes against ground loop surges and electrostatic discharge in motor control cabinets. IC Role / Device Role / Timing Role: Paired TVS devices (one per line) referenced to local ground, absorbing common-mode transients induced by nearby VFD switching. Use Value: Enables robust communication up to 1 Mbps over 1200 m cable by suppressing >1 kV transients without degrading signal edge rate - preserves timing margins for UART framing. |
| Consumer USB-C Port | Telecom DSL Line Interface |
|
Use Scenario: Secondary-level surge protection on USB-C CC and VCONN lines in portable docking stations exposed to user-handled ESD events. IC Role / Device Role / Timing Role: Low-capacitance TVS (CJ ≈ 200 pF at 0 V) placed adjacent to port connector to shunt 8 kV contact ESD before reaching USB PD controller. Use Value: Clamps ESD pulses within <1 ns while adding <0.5 pF parasitic capacitance - avoids signal integrity loss on 5 Gbps SuperSpeed lanes. |
Use Scenario: Front-end protection of ADSL/VDSL line drivers against lightning-induced surges entering via outdoor copper pairs. IC Role / Device Role / Timing Role: Bidirectional TVS connected between tip/ring and ground, acting as first-line clamp before hybrid transformer and line driver IC. Use Value: Withstands 10/700 µs telecom surges up to 1 kV by limiting voltage to 15.6 V - extends MTBF of SLIC and codec components by >3× vs. unprotected designs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ11CA | Same VWM/VBR/VC, but lower PPPM (600 W) and smaller SMB package (DO-214AA); RθJA = 85 °C/W vs. 75 °C/W. | Limited to lower-energy transients (IEC 61000-4-2 Level 3); unsuitable for IEC 61000-4-5 line surges without series impedance. | Select when board space is constrained and surge threat level is limited to ESD or low-energy switching noise. |
| 1.5KE11CA | Same electrical specs but axial-leaded DO-15 package; higher mounting inductance; not surface-mount compatible. | Requires through-hole assembly and manual rework; incompatible with automated SMT lines and dense PCB layouts. | Choose only for legacy repair, prototyping, or non-automated production where SMT is unavailable. |
Compared with 1.5SMC11CA-M3/9AT, SMBJ11CA trades 60% lower surge capacity for 30% smaller footprint, while 1.5KE11CA sacrifices SMT compatibility and thermal performance for legacy manufacturability - making 1.5SMC11CA-M3/9AT the optimal balance of power handling, manufacturability, and thermal reliability in new designs.
Availability
1.5SMC11CA-M3/9AT is available at Aetrix Electronics and suitable for automotive sensor protection, industrial communications interfaces, consumer USB-C port hardening, and telecom line interface applications requiring stable component supply and long-term lifecycle support.
Supply support for 1.5SMC11CA-M3/9AT 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 automotive-grade qualification.
The 1.5SMC Series was developed to deliver high-power, surface-mount TVS protection for automotive, industrial, and telecom systems where space, thermal performance, and surge robustness are critical - directly addressing demand for AEC-Q101-ready, halogen-free solutions in compact SMC packages.
FAQ
What is the clamping voltage of the 1.5SMC11CA-M3/9AT under a 10/1000 µs surge?
The 1.5SMC11CA-M3/9AT has a maximum clamping voltage (VC) of 15.6 V at 96.2 A peak pulse current with a 10/1000 µs waveform. This value is measured per standard test conditions (TA = 25 °C, mounted on 8.0 mm × 8.0 mm copper pads), and represents the highest voltage imposed on the protected circuit during surge conduction - critical for ensuring downstream ICs remain within absolute maximum ratings.
Is the 1.5SMC11CA-M3/9AT suitable for automotive applications?
Yes, the 1.5SMC11CA-M3/9AT is halogen-free and RoHS-compliant (M3 suffix), and belongs to the AEC-Q101-qualified 1.5SMC family - with HM3 variants explicitly certified. While the -M3/9AT itself is commercial-grade, its construction, thermal rating (TJmax = 150 °C), and electrical stability make it suitable for non-safety-critical automotive modules such as cabin sensors and infotainment I/O, pending system-level validation.
How does the bidirectional configuration of the 1.5SMC11CA-M3/9AT affect PCB layout?
The 1.5SMC11CA-M3/9AT has no polarity marking and identical electrical behavior in both directions, so either terminal may connect to signal or ground - simplifying layout for differential buses (e.g., RS-485, CAN) or AC-coupled lines. This eliminates orientation checks during automated placement and avoids misassembly risk, unlike unidirectional TVS diodes that require strict cathode alignment.
What is the thermal resistance of the 1.5SMC11CA-M3/9AT, and how does it impact surge handling?
The 1.5SMC11CA-M3/9AT has a typical junction-to-lead thermal resistance (RθJL) of 15 °C/W and junction-to-ambient (RθJA) of 75 °C/W when mounted per recommended pad layout. Lower RθJL enables efficient heat transfer to PCB copper during repetitive surges, preventing thermal runaway - essential for applications with frequent transients like motor drive feedback loops.
Does the 1.5SMC11CA-M3/9AT meet moisture sensitivity requirements for lead-free reflow?
Yes, the 1.5SMC11CA-M3/9AT meets J-STD-020 Moisture Sensitivity Level (MSL) 1, meaning it has unlimited floor life at ≤30 °C/60% RH and withstands peak reflow temperatures up to 260 °C without popcorn cracking or delamination - fully compatible with standard lead-free soldering profiles used in high-volume SMT assembly.
1.5SMC11CA-M3/9AT 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):
- 9.4V
- Voltage - Breakdown (Min):
- 10.5V
- Voltage - Clamping (Max) @ Ipp:
- 15.6V
- Current - Peak Pulse (10/1000µs):
- 96.2A
- 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)
1.5SMC11CA-M3/9AT FAQ
1.How can I place an order for 1.5SMC11CA-M3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC11CA-M3/9AT 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 1.5SMC11CA-M3/9AT reliable?
The price and inventory of 1.5SMC11CA-M3/9AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC11CA-M3/9AT is usually 5 days.
3.What payment methods are accepted for 1.5SMC11CA-M3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC11CA-M3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC11CA-M3/9AT?
1.5SMC11CA-M3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC11CA-M3/9AT 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 1.5SMC11CA-M3/9AT?
For technical support, including 1.5SMC11CA-M3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC11CA-M3/9AT requirements.
6.How does Aetrix verify that 1.5SMC11CA-M3/9AT is sourced from the original manufacturer or authorized distributors?
All 1.5SMC11CA-M3/9AT 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 1.5SMC11CA-M3/9AT meets industry standards.
7.What is the process for return or replacement of 1.5SMC11CA-M3/9AT?
All 1.5SMC11CA-M3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC11CA-M3/9AT, 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 1.5SMC11CA-M3/9AT part is unused and in its original packaging.
Return procedure for 1.5SMC11CA-M3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC11CA-M3/9AT Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
Tech Hub
Comparator circuit design covering voltage thresholds, input limits, open-collector outputs, LM393 wiring, op-amp differences, hysteresis, timing, window detection and practical fault diagnosis.
Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
