My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SMCJ110A-E3/9AT
- Part No.:
- SMCJ110A-E3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ110A-E3/9AT.pdf
- Description:
- TVS DIODE 110VWM 177VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:9,440
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMCJ110A-E3/9AT from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMC (DO-214AB) package, designed to protect sensitive electronics against voltage transients induced by inductive load switching and lightning surges. It features a 110 V stand-off voltage (VWM), 122–135 V breakdown voltage (VBR) at 1 mA, 177 V maximum clamping voltage (VC) at 8.5 A peak pulse current (IPPM), and 1500 W peak pulse power (PPPM) with 10/1000 µs waveform.
For engineers reviewing the SMCJ110A-E3/9AT datasheet, SMCJ110A-E3/9AT pinout, SMCJ110A-E3/9AT application, or SMCJ110A-E3/9AT equivalent, this device is selected for high-energy surge protection in automotive power supplies, industrial motor control interfaces, and telecom line-card DC rails where robust clamping, low leakage (<1.0 µA at VWM), and AEC-Q101 qualification readiness are critical.
Technical Context
The SMCJ110A-E3/9AT operates as a unidirectional avalanche diode, triggering when reverse voltage exceeds its specified breakdown range (122–135 V). Its glass-passivated junction ensures stable VBR tolerance and low incremental surge resistance, enabling consistent clamping performance under repetitive transient stress.
Thermally, it exhibits RθJA = 75 °C/W and RθJL = 15 °C/W, supporting operation up to +150 °C junction temperature. The device meets MSL Level 1 per J-STD-020 and is RoHS-compliant with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 110 V - Maximum continuous reverse operating voltage before clamping begins; defines safe DC/AC rail margin for protected circuitry. |
| VBR (min/max) | 122 V / 135 V at 1 mA - Confirmed avalanche onset range; ensures predictable turn-on across temperature and unit variation. |
| VC @ IPPM | 177 V at 8.5 A - Clamped voltage during 10/1000 µs surge; determines maximum stress imposed on downstream ICs or MOSFETs. |
| PPPM | 1500 W - Peak transient energy absorption capability; supports IEC 61000-4-5 Level 4 (4 kV/2 Ω) surge compliance with proper layout. |
| ID @ VWM | <1.0 µA - Ultra-low reverse leakage at rated stand-off; minimizes quiescent power loss in battery-backed or low-power systems. |
| TJ max. | +150 °C - Maximum junction temperature rating; enables use in under-hood automotive and industrial environments without derating. |
| Package | SMC (DO-214AB) - Standardized surface-mount outline with 8.0 mm × 8.0 mm copper pad thermal relief; compatible with automated placement and reflow. |
Pinout & Package
SMCJ110A-E3/9AT uses the SMC (DO-214AB) package: a molded plastic case with two coplanar leads, cathode indicated by a band. Leads are matte tin-plated and compliant with J-STD-002 solderability standards. Thermal performance assumes mounting on 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction path (unidirectional) | Connected to system ground or low-side reference; carries surge current during clamping event. |
| Cathode | Reverse-biased terminal (marked with band) | Connected to protected line (e.g., 110 V DC rail); avalanche conduction initiates here when VWM exceeded. |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power | Supports high-energy transients (e.g., ISO 7637-2 Pulse 5a) without failure when mounted per recommended pad layout. |
| Low clamping ratio (VC/VBR ≈ 1.42) | Minimizes overvoltage overshoot during surge events, reducing stress on downstream 150 V-rated components. |
| 1.0 µA max reverse leakage at VWM | Enables use in always-on, low-quiescent-current applications such as automotive body control modules. |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life before reflow; eliminates bake requirements and simplifies SMT manufacturing flow. |
| AEC-Q101 qualification option | Base P/NHE3 variant available for automotive-grade reliability; SMCJ110A-E3/9AT shares identical die and construction. |
Applications
| Automotive Power Rail Protection | Industrial Motor Drive DC Bus |
|---|---|
|
Use Scenario: Protecting 110 V nominal battery-fed ECUs against load dump and alternator transients per ISO 7637-2. IC Role / Device Role / Timing Role: Unidirectional TVS placed between DC+ and chassis ground to clamp positive-going surges above 110 V. Use Value: Limits peak voltage to ≤177 V during 1500 W transients, preventing damage to 200 V-rated gate drivers and microcontrollers. |
Use Scenario: Safeguarding 110 V DC bus in servo amplifier front-end against inductive kickback from H-bridge switching. IC Role / Device Role / Timing Role: Standoff-clamp protector on main DC input, absorbing energy from flyback currents during MOSFET turn-off. Use Value: Achieves sub-200 V clamping with <1 µA leakage, preserving efficiency while meeting IEC 61800-3 EMC immunity requirements. |
| Telecom Line Card DC Supply | Renewable Energy Charge Controller |
|
Use Scenario: Securing 110 V intermediate bus in outdoor telecom cabinets exposed to lightning-induced surges on AC/DC converter output. IC Role / Device Role / Timing Role: Primary transient suppressor on secondary-side DC rail, coordinated with upstream MOVs and filters. Use Value: Delivers 1500 W surge handling with fast response (<1 ns), ensuring no latch-up or degradation in FPGA-based baseband processors. |
Use Scenario: Protecting MPPT controller inputs connected to 110 V solar string outputs subject to rapid voltage spikes during cloud-edge transitions. IC Role / Device Role / Timing Role: Unidirectional clamping device on PV+ line, referenced to system ground to shunt overvoltage to earth. Use Value: Maintains <1 µA leakage at 110 V, avoiding parasitic drain on photovoltaic arrays while surviving repeated 10/1000 µs surges. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ110A-E3/52T | Lower PPPM (600 W), same VWM/VBR/VC, SMB (DO-214AA) package (smaller footprint, higher RθJA). | Suitable for space-constrained, lower-energy applications (e.g., sensor nodes); not rated for 1500 W surges. | Select when board area is limited and surge threat level is ≤600 W (e.g., IEC 61000-4-5 Level 2). |
| SMCJ110CA-E3/9AT | Bidirectional variant; identical VWM/VBR/VC ratings but symmetric clamping in both polarities. | Required for AC-coupled or floating signal lines where negative transients must also be suppressed. | Choose only if bidirectional protection is mandated - unidirectional SMCJ110A-E3/9AT offers lower cost and simpler grounding for DC rails. |
Compared with SMBJ110A-E3/52T, the SMCJ110A-E3/9AT delivers 2.5× higher surge power handling and better thermal dissipation; versus SMCJ110CA-E3/9AT, it provides optimized cost and layout simplicity for grounded DC systems where negative transients are absent or blocked.
Availability
SMCJ110A-E3/9AT is available at Aetrix Electronics and suitable for automotive power rail protection, industrial motor drive DC bus safeguarding, and telecom line card DC supply stabilization requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for SMCJ110A-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, and protection devices with emphasis on reliability, precision, and application-specific optimization.
The SMCJ series was engineered for high-energy transient suppression in harsh environments-targeting automotive, industrial, and telecom infrastructure where robustness, consistency, and AEC-Q101 readiness are mandatory.
FAQ
What is the clamping voltage of the SMCJ110A-E3/9AT under a 10/1000 µs surge?
The SMCJ110A-E3/9AT clamps to a maximum of 177 V when subjected to its rated 8.5 A peak pulse current (IPPM) using the standard 10/1000 µs waveform. This value is measured under defined test conditions (mounted on 8.0 mm × 8.0 mm copper pads) and represents the upper limit of voltage seen by protected circuitry during worst-case surge events. The SMCJ110A-E3/9AT maintains this clamping performance across its operational temperature range.
Is the SMCJ110A-E3/9AT suitable for automotive applications?
The SMCJ110A-E3/9AT is RoHS-compliant and built on the same die and construction as the AEC-Q101-qualified SMCJ110AHE3 variant. While the -E3/9AT suffix denotes commercial-grade qualification, its electrical and thermal specifications-including 1500 W PPPM, 150 °C TJ max, and MSL Level 1-align with automotive environmental demands. For production automotive use, the HE3 variant is required; the SMCJ110A-E3/9AT serves well in prototyping, industrial equivalents, and non-safety-critical vehicle subsystems.
How does the SMCJ110A-E3/9AT differ from the SMCJ110CA-E3/9AT?
The SMCJ110A-E3/9AT is unidirectional, with polarity marked by a cathode band and intended for DC rail protection where only positive transients occur. The SMCJ110CA-E3/9AT is bidirectional, offering symmetrical clamping for AC or floating lines. Both share identical VWM (110 V), VBR (122–135 V), VC (177 V), and PPPM (1500 W), but the CA version has no polarity marking and double the ID limit for VWM ≤10 V-irrelevant for the 110 V variant. The SMCJ110A-E3/9AT is preferred for grounded DC systems due to lower cost and simplified layout.
What is the thermal resistance of the SMCJ110A-E3/9AT, and how does it affect PCB layout?
The SMCJ110A-E3/9AT has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W and junction-to-lead (RθJL) of 15 °C/W. These values assume mounting on 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal. To maintain reliability under repeated surges, PCB layout must replicate this pad area and avoid excessive trace length or narrow connections. Reducing copper area increases RθJA, risking thermal runaway during high-duty-cycle transients-so the SMCJ110A-E3/9AT's thermal design must follow Vishay's recommended land pattern.
Does the SMCJ110A-E3/9AT meet any industry surge immunity standards?
The SMCJ110A-E3/9AT is rated for 1500 W peak pulse power with a 10/1000 µs waveform, making it suitable for compliance with IEC 61000-4-5 Level 4 (4 kV, 2 Ω source impedance) when implemented with appropriate PCB layout and coordination with upstream filtering. It also supports ISO 7637-2 Pulse 5a (load dump) in automotive designs when paired with series impedance. While the SMCJ110A-E3/9AT itself is not certified to these standards, its parameters enable system-level compliance when applied per Vishay's application guidance and layout recommendations.
SMCJ110A-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:
- 1
- Bidirectional Channels:
- -
- 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)
SMCJ110A-E3/9AT FAQ
1.How can I place an order for SMCJ110A-E3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ110A-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 SMCJ110A-E3/9AT reliable?
The price and inventory of SMCJ110A-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 SMCJ110A-E3/9AT is usually 5 days.
3.What payment methods are accepted for SMCJ110A-E3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ110A-E3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ110A-E3/9AT?
SMCJ110A-E3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ110A-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 SMCJ110A-E3/9AT?
For technical support, including SMCJ110A-E3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ110A-E3/9AT requirements.
6.How does Aetrix verify that SMCJ110A-E3/9AT is sourced from the original manufacturer or authorized distributors?
All SMCJ110A-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 SMCJ110A-E3/9AT meets industry standards.
7.What is the process for return or replacement of SMCJ110A-E3/9AT?
All SMCJ110A-E3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ110A-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 SMCJ110A-E3/9AT part is unused and in its original packaging.
Return procedure for SMCJ110A-E3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ110A-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 …
