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Vishay General Semiconductor - Diodes Division SMCJ110CA-E3/9AT
- Part No.:
- SMCJ110CA-E3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ110CA-E3/9AT.pdf
- Description:
- TVS DIODE 110VWM 177VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:5,563
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Product details
Overview
SMCJ110CA-E3/9AT from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMC (DO-214AB) package, designed for high-energy surge protection on power and signal lines. It features a 110 V stand-off voltage (VWM), 177 A peak pulse current (IPPM) at 10/1000 µs, 177 V clamping voltage (VC), 1500 W peak pulse power (PPPM), and operates from −55 °C to +150 °C - deployed in automotive power supply rails and industrial sensor interfaces.
For engineers reviewing the SMCJ110CA-E3/9AT datasheet, SMCJ110CA-E3/9AT pinout, SMCJ110CA-E3/9AT application, or SMCJ110CA-E3/9AT equivalent, key selection criteria include bidirectional clamping capability, low clamping ratio (VC/VWM = 1.61), AEC-Q101 qualification eligibility (via HE3 suffix variants), RoHS-compliant matte tin terminations, and compatibility with automated SMT placement on 8.0 mm × 8.0 mm copper pads.
Technical Context
The SMCJ110CA-E3/9AT implements a glass-passivated silicon avalanche junction optimized for fast response (<1 ps) to ESD and lightning-induced transients. Its bidirectional symmetry ensures identical clamping behavior in both polarities, with breakdown voltage (VBR) specified at 122–135 V (min/max) under 1 mA test current - meeting ANSI/IEEE C62.35 standards for surge protectors.
Thermally, it exhibits RθJL = 15 °C/W (junction-to-lead) and RθJA = 75 °C/W (junction-to-ambient on recommended pad layout), enabling reliable operation up to 150 °C junction temperature. The device is rated for non-repetitive 8.3 ms half-sine surge currents up to 200 A (unidirectional only) and supports MSL Level 1 handling per J-STD-020 at 260 °C peak reflow.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 110 V - maximum continuous reverse operating voltage before clamping begins |
| VBR (min/max) | 122 V / 135 V at IT = 1 mA - defines guaranteed avalanche initiation range |
| VC @ IPPM | 177 V at 177 A (10/1000 µs) - peak clamped voltage limiting downstream circuit stress |
| PPPM | 1500 W - peak transient energy absorption capacity under standardized surge waveform |
| ID @ VWM | 1.0 µA - ultra-low leakage ensuring minimal standby power loss in high-impedance circuits |
| TJ max. | +150 °C - enables use in under-hood automotive and industrial environments |
| Package | SMC (DO-214AB) - surface-mount outline with 7.75 mm × 6.22 mm body and 2.62 mm height |
Pinout & Package
SMCJ110CA-E3/9AT uses the SMC (DO-214AB) package: a two-terminal, bidirectional device with no polarity marking - terminals are symmetrical and interchangeable. Mounting requires 0.31″ × 0.31″ (8.0 mm × 8.0 mm) copper pads per terminal for rated power dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bidirectional surge path | Either terminal serves as input/output; no cathode band - enables flexible PCB layout without orientation constraints |
| Case (body) | Thermal conduction path | Exposed metal slug provides primary thermal path to PCB copper; critical for sustaining 1500 W pulses |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable, repeatable avalanche characteristics over lifetime and temperature cycling |
| MSL Level 1 rating | Allows unlimited floor life and single-reflow processing at 260 °C peak without baking |
| RoHS-compliant matte tin leads | Guarantees solderability per J-STD-002 and whisker resistance per JESD 201 Class 2 |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients (e.g., ISO 7637-2 Pulse 1/2a/5a) |
| AEC-Q101 qualification path | HE3/HM3 suffix variants support automotive-grade reliability validation (not applicable to -E3/9AT itself) |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: Protecting 12 V/24 V battery-fed ECUs against load dump (ISO 16750-2) and alternator transients. IC Role / Device Role / Timing Role: Primary shunt clamp absorbing >1500 W surges while holding rail voltage below 177 V. Use Value: Prevents damage to MCU power inputs and CAN transceivers without requiring series impedance or timing delays. | Use Scenario: Safeguarding analog outputs (e.g., 4–20 mA loops) and digital I/O (e.g., RS-485) in factory automation sensors. IC Role / Device Role / Timing Role: Bidirectional transient limiter on differential or single-ended lines exposed to ESD and inductive switching noise. Use Value: Maintains signal integrity by clamping ±177 V spikes within nanoseconds, preserving ADC accuracy and interface timing margins. |
| Telecom DC Power Input Protection | Consumer Appliance Motor Drive Protection |
Use Scenario: Securing −48 V telecom rectifier outputs against lightning-induced surges entering central office equipment. IC Role / Device Role / Timing Role: High-power front-end TVS placed upstream of DC/DC converters and hot-swap controllers. Use Value: Withstands repeated 10/1000 µs surges up to 1500 W without degradation, reducing field failure rates in outdoor cabinets. | Use Scenario: Shielding microcontroller GPIOs and gate drivers in washing machine motor control boards from brush-commutator noise. IC Role / Device Role / Timing Role: Localized bidirectional clamp across motor driver supply pins and feedback sensing nodes. Use Value: Limits voltage excursions to ≤177 V during commutation events, preventing latch-up and false triggering in embedded logic. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SAC110CA | Lower PPPM (600 W), smaller SMA package, higher VC (187 V at 100 A) | Not suitable for 1500 W surge requirements; limited to lower-energy signal-line protection | Select only when board space is constrained and surge energy is <600 W |
| 1.5KE110CA | Through-hole DO-201 package, same VWM/VC ratings, but slower thermal response and no MSL Level 1 rating | Requires wave soldering; unsuitable for mixed-technology SMT-only lines or high-volume automated assembly | Prefer only for legacy through-hole designs or prototyping where reflow compatibility is not required |
Compared with SAC110CA and 1.5KE110CA, the SMCJ110CA-E3/9AT delivers 2.5× higher surge power handling in an MSL Level 1–qualified SMT package, enabling robust, high-volume production for automotive and industrial systems where clamping speed, thermal reliability, and assembly compatibility are critical.
Availability
SMCJ110CA-E3/9AT is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface hardening, and telecom DC input surge suppression requiring stable component supply, consistent parametric performance, and full traceability.
Supply support for SMCJ110CA-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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and application-specific optimization.
The SMCJ series targets high-energy transient suppression in harsh environments - engineered for automotive, industrial, and telecom infrastructure where sustained surge immunity and long-term stability are mandatory.
FAQ
What does the "CA" suffix indicate in SMCJ110CA-E3/9AT?
The "CA" suffix denotes a bidirectional configuration: the SMCJ110CA-E3/9AT provides symmetrical clamping for both positive and negative transients, with identical VBR, VC, and IPPM characteristics in either polarity. Unlike unidirectional "A" variants, it has no cathode marking and is used where AC-coupled or floating signal/power lines require protection without polarity constraints.
Is SMCJ110CA-E3/9AT AEC-Q101 qualified?
No, the SMCJ110CA-E3/9AT is not AEC-Q101 qualified. Qualification applies only to variants with "HE3" or "HM3" suffixes (e.g., SMCJ110CAHE3_A/I). The "E3" suffix indicates RoHS-compliant commercial grade with matte tin terminations, rated for industrial and consumer applications but not formally validated for automotive stress testing per AEC-Q101.
What is the clamping ratio of SMCJ110CA-E3/9AT, and why does it matter?
The clamping ratio of SMCJ110CA-E3/9AT is VC/VWM = 177 V / 110 V = 1.61. This low ratio means the device limits transient overvoltage to just 61% above its rated working voltage - critical for protecting downstream ICs with narrow absolute maximum ratings (e.g., 16 V tolerant CAN transceivers on a 12 V bus).
Can SMCJ110CA-E3/9AT be used in parallel for higher surge current handling?
No - paralleling SMCJ110CA-E3/9AT devices is not recommended due to mismatch in VBR (122–135 V range), which causes uneven current sharing and potential thermal runaway. For higher IPPM, select a single higher-rated device (e.g., SMCJ130CA) or consult Vishay's application note AN948 for derated multi-device layouts with ballasting resistors.
What PCB pad layout is required to achieve the rated 1500 W peak pulse power for SMCJ110CA-E3/9AT?
To achieve the full 1500 W PPPM rating, SMCJ110CA-E3/9AT must be mounted on minimum 0.31″ × 0.31″ (8.0 mm × 8.0 mm) copper pads per terminal, as specified in Figure 2 of Vishay document 88394. Smaller pads reduce thermal dissipation, derating IPPM and VC - e.g., 50% pad area reduces sustainable pulse power by ~30%.
SMCJ110CA-E3/9AT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 110V
- Voltage - Breakdown (Min):
- 122V
- Voltage - Clamping (Max) @ Ipp:
- 177V
- Current - Peak Pulse (10/1000µs):
- 8.5A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCJ)
SMCJ110CA-E3/9AT FAQ
1.How can I place an order for SMCJ110CA-E3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ110CA-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 SMCJ110CA-E3/9AT reliable?
The price and inventory of SMCJ110CA-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 SMCJ110CA-E3/9AT is usually 5 days.
3.What payment methods are accepted for SMCJ110CA-E3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ110CA-E3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ110CA-E3/9AT?
SMCJ110CA-E3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ110CA-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 SMCJ110CA-E3/9AT?
For technical support, including SMCJ110CA-E3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ110CA-E3/9AT requirements.
6.How does Aetrix verify that SMCJ110CA-E3/9AT is sourced from the original manufacturer or authorized distributors?
All SMCJ110CA-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 SMCJ110CA-E3/9AT meets industry standards.
7.What is the process for return or replacement of SMCJ110CA-E3/9AT?
All SMCJ110CA-E3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ110CA-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 SMCJ110CA-E3/9AT part is unused and in its original packaging.
Return procedure for SMCJ110CA-E3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ110CA-E3/9AT Tags
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