My Inquiry
My Account
Vishay General Semiconductor - Diodes Division 1.5SMC11CA-E3/9AT
- Part No.:
- 1.5SMC11CA-E3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC11CA-E3/9AT.pdf
- Description:
- TVS DIODE 9.4VWM 15.6VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:7,972
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
1.5SMC11CA-E3/9AT from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the SMC (DO-214AB) package, designed for high-energy surge protection. It features a 11 V breakdown voltage (VBR = 10.5–11.6 V at IT = 1.0 mA), 9.4 V stand-off voltage (VWM), and clamps transients to ≤15.6 V at 96.2 A peak pulse current (IPPM) under 10/1000 μs waveform - deployed in automotive sensor signal lines and industrial I/O interfaces.
For engineers reviewing the 1.5SMC11CA-E3/9AT datasheet, 1.5SMC11CA-E3/9AT pinout, 1.5SMC11CA-E3/9AT application, or 1.5SMC11CA-E3/9AT equivalent, this device delivers verified bidirectional clamping, AEC-Q101 qualification readiness (via HE3/HM3 variants), RoHS-compliant matte tin terminations, and MSL Level 1 moisture sensitivity - critical for automotive-grade ESD and lightning transient hardening in production PCBs.
Technical Context
The 1.5SMC11CA-E3/9AT operates as a symmetrical avalanche diode with identical forward and reverse breakdown characteristics, enabling bidirectional transient suppression without polarity dependency. Its glass-passivated junction ensures stable VBR tolerance (±5%) and low incremental surge resistance, while the SMC package supports automated placement and meets UL 94 V-0 flammability rating.
It handles 1500 W peak pulse power (10/1000 μs), derates linearly above TA = 25 °C per Fig. 2, and maintains operation across –65 °C to +150 °C junction temperature range. With 75 °C/W junction-to-ambient thermal resistance and no cathode marking (standard for bidirectional types), it relies on symmetric pad layout (8.0 mm × 8.0 mm copper) for rated power dissipation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 10.5 V / 11.6 V at IT = 1.0 mA - defines precise clamping onset threshold for bidirectional surges |
| VWM | 9.4 V - maximum continuous reverse voltage before leakage exceeds 5.0 μA, ensuring signal integrity in standby |
| VC @ IPPM | ≤15.6 V at 96.2 A - limits protected circuit voltage during worst-case 1500 W transient events |
| PPPM | 1500 W (10/1000 μs) - enables robust protection against lightning-induced surges and inductive switching spikes |
| IPPM | 96.2 A - peak surge current capacity determines minimum trace width and PCB copper area required |
| TJ max. | +150 °C - allows operation in under-hood automotive environments and high-power industrial enclosures |
| Package | SMC (DO-214AB) - 7.75 mm × 6.22 mm footprint with 2.06 mm height, compatible with standard SMT reflow profiles |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, bidirectional - no polarity marking; terminals are symmetrical anode/cathode pair.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | Anode / Cathode (bidirectional) | Either terminal serves as input/output for transient energy; no fixed polarity - connects to protected line and ground reference |
| Terminal 2 | Anode / Cathode (bidirectional) | Paired terminal completing the symmetrical clamp path; requires equal-length routing to avoid impedance imbalance |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or differential signal lines (e.g., CAN, RS-485) without polarity concerns |
| 1500 W peak pulse power | Withstands IEC 61000-4-5 Level 4 surges (4 kV, 2 Ω source) when mounted on 8 mm × 8 mm copper pads |
| MSL Level 1 rating | Allows unlimited floor life and standard reflow without baking - reduces manufacturing overhead in high-volume SMT lines |
| Glass-passivated junction | Ensures long-term VBR stability and low leakage (<5 μA at VWM) over 10+ year field deployment |
| RoHS-compliant matte tin leads | Meets J-STD-002 solderability and JESD22-B102 durability standards - eliminates post-reflow cleaning or corrosion risk |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
|
Use Scenario: Protecting analog output lines (0–10 V, 4–20 mA) of engine control unit (ECU) sensors from load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional TVS placed between signal line and chassis ground, clamping transients within 1 ns response time. Use Value: Limits voltage excursion to ≤15.6 V during 100 A surge events, preventing damage to precision ADC front-ends and op-amp buffers. |
Use Scenario: Safeguarding digital input channels of programmable logic controllers exposed to relay coil flyback and motor drive noise. IC Role / Device Role / Timing Role: Parallel-connected TVS shunting induced spikes on 24 V DC inputs before reaching optocoupler isolation stage. Use Value: Absorbs 1500 W surges without degradation, maintaining >100 kΩ input impedance during normal operation per VWM = 9.4 V. |
| Telecom Line Interface | Consumer Appliance Motor Control |
|
Use Scenario: Shielding Ethernet PHY differential pairs and telephone line interface circuits from lightning-induced common-mode surges. IC Role / Device Role / Timing Role: Paired 1.5SMC11CA-E3/9AT devices on each line (tip/ring) referenced to local ground plane. Use Value: Symmetric clamping ensures balanced transient suppression, preserving signal integrity up to 100 Mbps without skew or jitter. |
Use Scenario: Suppressing commutation spikes from brushed DC motors in washing machines and HVAC blowers. IC Role / Device Role / Timing Role: Mounted across motor terminals to clamp inductive kickback before reaching H-bridge MOSFETs. Use Value: Withstands repetitive 200 A IFSM half-sine surges (8.3 ms), extending MOSFET lifetime and eliminating snubber RC networks. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bidirectional TVS protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ11CA | Lower PPPM (600 W), SMB package (smaller footprint, higher RθJA = 85 °C/W) | Suitable for space-constrained consumer electronics but not automotive-level surge immunity | Select when board area is limited and peak surge energy is <600 W |
| 1.5KE11CA | Through-hole DO-201 package, same VBR/VC, higher IPPM (102 A), lower thermal performance | Used in legacy industrial power supplies where manual assembly or high-reliability through-hole mounting is required | Choose for repair/refurbishment of existing through-hole designs or high-vibration environments |
Compared with SMBJ11CA and 1.5KE11CA, the 1.5SMC11CA-E3/9AT uniquely balances 1500 W surge handling, SMT manufacturability, and automotive-ready qualification path - making it optimal for new automotive and industrial designs requiring both high power density and AEC-Q101 scalability.
Availability
1.5SMC11CA-E3/9AT is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC I/O cards, telecom line interfaces, and appliance motor drives requiring stable component supply across multi-year production cycles.
Supply support for 1.5SMC11CA-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 high-reliability diodes, MOSFETs, and passive components for automotive, industrial, and computing markets.
The 1.5SMC Series was engineered specifically for surface-mount transient suppression in harsh environments - delivering consistent clamping performance, AEC-Q101 qualification capability, and scalable packaging for high-volume automotive electronics.
FAQ
What does the "CA" suffix mean in 1.5SMC11CA-E3/9AT?
The "CA" suffix in 1.5SMC11CA-E3/9AT denotes a bidirectional configuration - meaning the device provides symmetrical transient suppression in both polarities, with identical breakdown and clamping behavior in either direction. This eliminates the need for polarity-aware placement and makes it ideal for AC signal lines, differential buses, and ungrounded systems where voltage reversal can occur during surges.
Is 1.5SMC11CA-E3/9AT AEC-Q101 qualified?
The base 1.5SMC11CA-E3/9AT is RoHS-compliant and commercial-grade; however, Vishay offers AEC-Q101 qualified versions under ordering codes such as 1.5SMC11CAHE3_A/I (with "HE3" or "HM3" suffixes). These variants undergo extended stress testing for automotive use, while the E3/9AT variant shares identical electrical specs and package but is certified for industrial and general-purpose applications.
What is the maximum clamping voltage of 1.5SMC11CA-E3/9AT under surge conditions?
The maximum clamping voltage (VC) of 1.5SMC11CA-E3/9AT is 15.6 V when subjected to its rated peak pulse current of 96.2 A using the standardized 10/1000 μs waveform. This value is guaranteed across the full operating temperature range and forms the upper voltage limit seen by downstream circuitry during transient events.
How does the SMC package of 1.5SMC11CA-E3/9AT compare to SMA or SMB in terms of power handling?
The SMC (DO-214AB) package used by 1.5SMC11CA-E3/9AT supports 1500 W peak pulse power - significantly higher than SMA (≈400 W) or SMB (≈600 W) packages - due to its larger copper pad area (8.0 mm × 8.0 mm per terminal) and lower thermal resistance (RθJL = 15 °C/W). This enables reliable operation in high-energy surge environments where smaller packages would thermally saturate.
Can 1.5SMC11CA-E3/9AT be used in place of a unidirectional TVS like 1.5SMC11A-E3/9AT?
No - 1.5SMC11CA-E3/9AT is strictly bidirectional and lacks polarity marking, whereas 1.5SMC11A-E3/9AT is unidirectional with a cathode band. Substituting them requires verifying circuit topology: bidirectional use is mandatory for AC signals or floating references, while unidirectional parts are needed for DC-biased lines where reverse conduction must be blocked. Their VBR, VWM, and VC values differ slightly due to test condition variations.
1.5SMC11CA-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):
- 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-E3/9AT FAQ
1.How can I place an order for 1.5SMC11CA-E3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC11CA-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 1.5SMC11CA-E3/9AT reliable?
The price and inventory of 1.5SMC11CA-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 1.5SMC11CA-E3/9AT is usually 5 days.
3.What payment methods are accepted for 1.5SMC11CA-E3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC11CA-E3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC11CA-E3/9AT?
1.5SMC11CA-E3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC11CA-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 1.5SMC11CA-E3/9AT?
For technical support, including 1.5SMC11CA-E3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC11CA-E3/9AT requirements.
6.How does Aetrix verify that 1.5SMC11CA-E3/9AT is sourced from the original manufacturer or authorized distributors?
All 1.5SMC11CA-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 1.5SMC11CA-E3/9AT meets industry standards.
7.What is the process for return or replacement of 1.5SMC11CA-E3/9AT?
All 1.5SMC11CA-E3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC11CA-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 1.5SMC11CA-E3/9AT part is unused and in its original packaging.
Return procedure for 1.5SMC11CA-E3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC11CA-E3/9AT 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 …
