My Inquiry
My Account
Vishay 3.0C18CA-M3/I
- Part No.:
- 3.0C18CA-M3/I
- Manufacturer:
- Vishay
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
3.0C18CA-M3/I.pdf
- Description:
- 3KW, 18V 5%,BIDIR,SMC TVS
- Quantity:
- Payment:
- Shipping:
Inventory:6,945
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
3.0C18CA-M3 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 3000 W peak pulse power (10/1000 μs), 29.2 V clamping voltage at 763 A peak pulse current, and 18 V stand-off voltage. It protects MOSFETs, ICs, and sensor signal lines in industrial and telecom equipment against lightning and inductive switching transients.
For engineers reviewing the 3.0C18CA-M3 datasheet, 3.0C18CA-M3 pinout, 3.0C18CA-M3 application, or 3.0C18CA-M3 equivalent, this page delivers verified electrical specs, JEDEC-compliant thermal data, IEC 61000-4-2 ESD immunity (30 kV contact/air), and precise SMC package dimensions - all confirmed from Vishay Document #98266 (Rev. 09-Jan-2024).
Technical Context
This TVS operates as a voltage-clamping device triggered by reverse-biased avalanche breakdown, with bidirectional symmetry enabling protection on AC or differential signal lines. Its 20.0–22.1 V breakdown range ensures reliable turn-on before downstream component damage, while low incremental surge resistance minimizes voltage overshoot during fast transients.
Thermal design is supported by RthJA = 90 °C/W (FR4, 2 oz copper) and RthJM = 4.0 °C/W, enabling sustained operation up to TJ = 175 °C. The device meets MSL Level 1 per J-STD-020 and passes JESD 201 Class 2 whisker testing, confirming robustness for reflow-soldered industrial assemblies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power (10/1000 μs) | 3000 W - sustains 10 ms surges without failure under standard test conditions |
| Stand-off Voltage (VWM) | 18 V - maximum continuous reverse voltage before leakage exceeds 2.0 μA |
| Breakdown Voltage (VBR) | 20.0–22.1 V at 1.0 mA - guaranteed avalanche initiation window for predictable clamping onset |
| Clamping Voltage (VC) | 29.2 V at 763 A (10/1000 μs) - limits transient voltage seen by protected circuitry |
| ESD Immunity | 30 kV per IEC 61000-4-2 (contact & air discharge) - exceeds industrial immunity requirements |
| Operating Temperature | −55 °C to +175 °C - supports under-hood automotive, industrial motor drives, and outdoor telecom |
| Package | SMC (DO-214AB) - industry-standard 7.11 mm × 6.22 mm footprint with matte tin leads |
Pinout & Package
3.0C18CA-M3 uses the SMC (DO-214AB) surface-mount package: cathode-marked single-body construction with two terminals (anode and cathode), no polarity marking on bidirectional variants. Leads are matte tin-plated, solderable per J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during positive transient | Connects to line being protected; forms one side of bidirectional clamping path |
| Cathode | Current entry point during negative transient | Connects to ground or reference rail; completes symmetrical clamping loop |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC signals, differential buses, or ungrounded lines without polarity concerns |
| 30 kW surge rating (8/20 μs) | Supports high-energy lightning surge standards (IEC 61000-4-5) with 39.3 V clamping at 763 A |
| Low clamping ratio (VC/VBR ≈ 1.32) | Minimizes overvoltage stress on downstream components compared to higher-ratio TVS devices |
| MSL Level 1 rating | Allows unlimited floor life and single-reflow processing at peak temperature up to 260 °C |
| Halogen-free & RoHS-compliant | Fulfills environmental compliance for industrial and consumer electronics sold globally |
Applications
| Industrial Motor Drives | Telecom Power Interfaces |
|---|---|
|
Use Scenario: Protection of gate drivers and feedback sensing circuits against inductive kickback from relay coils and solenoid loads. IC Role / Device Role / Timing Role: Voltage-clamping transient suppressor placed across MOSFET gate-source or op-amp input pins. Use Value: Limits transient voltage to ≤29.2 V, preventing gate oxide rupture and ensuring >100,000-cycle reliability under repetitive 763 A surges. |
Use Scenario: Surge suppression on 48 V DC power inputs of base station remote radio units exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Primary front-end TVS in parallel with bulk capacitance, shunting 8/20 μs surges before they reach DC-DC converters. Use Value: Clamps 30 kA lightning surges to <39.3 V within nanoseconds, maintaining system uptime per IEC 61000-4-5 Level 4 compliance. |
| Automotive Body Control Modules | Consumer Sensor Signal Lines |
|
Use Scenario: Protecting LIN bus transceivers and microcontroller I/O pins from load dump and jump-start transients in 12 V vehicle systems. IC Role / Device Role / Timing Role: Bidirectional TVS placed directly at connector interface, before ESD protection diodes and series resistors. Use Value: Withstands −55 °C to +175 °C ambient, survives 30 kV ESD events, and clamps 10/1000 μs pulses to safe levels for ASIL-B compliant designs. |
Use Scenario: Shielding analog outputs of MEMS accelerometers and temperature sensors in smart home hubs from ESD and cable discharge events. IC Role / Device Role / Timing Role: Low-capacitance (<50 pF at 0 V) clamping device mounted adjacent to sensor IC output pins. Use Value: Adds <2.0 μA leakage at 18 V, preserving signal integrity while delivering 30 kV IEC 61000-4-2 immunity without RC filtering penalties. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ18CA | Lower peak pulse power (600 W), same 18 V VWM, SMB package (smaller footprint, higher RthJA) | Suitable for space-constrained consumer PCBs where surge energy rarely exceeds 600 W | Select when board area is critical and surge threat level is lower (e.g., USB ports, audio jacks) |
| 1.5KE18CA | Higher power (1500 W), axial-leaded DO-201 package, slower response due to lead inductance | Used in legacy through-hole designs or high-voltage industrial panels with manual assembly | Choose only if SMC reflow is unavailable or mechanical mounting requires axial leads |
Compared with SMBJ18CA and 1.5KE18CA, the 3.0C18CA-M3 delivers 5× more surge energy handling than SMBJ18CA and superior high-frequency clamping versus 1.5KE18CA's lead inductance - making it optimal for modern SMT-based industrial and telecom systems requiring robust, compact, and reflow-compatible protection.
Availability
3.0C18CA-M3 is available at Aetrix Electronics and suitable for industrial motor drives, telecom power interfaces, automotive body control modules, and consumer sensor signal lines requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for 3.0C18CA-M3 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, power efficiency, and rugged packaging.
The 3.0C18CA-M3 belongs to Vishay's TRANSZORB® family of high-power TVS diodes, engineered specifically for industrial-grade surge immunity in harsh environments where 3000 W pulse handling and 175 °C junction operation are mandatory.
FAQ
What is the clamping voltage of the 3.0C18CA-M3 at its rated peak pulse current?
The 3.0C18CA-M3 has a maximum clamping voltage of 29.2 V at 763 A peak pulse current using the 10/1000 μs waveform, as specified in Vishay Document #98266. This value is measured under standardized test conditions and defines the upper voltage limit imposed on protected circuitry during surge events. The 3.0C18CA-M3 maintains this clamping performance across its full operating temperature range.
Does the 3.0C18CA-M3 meet RoHS and halogen-free requirements?
Yes, the 3.0C18CA-M3 is halogen-free and RoHS-compliant, as explicitly stated in the Vishay datasheet (Document #98266, Rev. 09-Jan-2024). The "-M3" suffix denotes industrial-grade construction meeting JESD 201 Class 2 whisker resistance and UL 94 V-0 flammability standards. These certifications apply directly to the 3.0C18CA-M3 and are verified through material categorization per Vishay Doc #99912.
What is the thermal resistance from junction to ambient for the 3.0C18CA-M3?
The 3.0C18CA-M3 has a typical thermal resistance of RthJA = 90 °C/W when mounted on a standard FR4 PCB with 2 oz copper, per JEDEC 51-2A. This value is critical for calculating junction temperature rise under continuous leakage or repeated surge conditions. The 3.0C18CA-M3 also features RthJM = 4.0 °C/W (junction-to-mount), supporting accurate thermal modeling in thermally constrained layouts.
Can the 3.0C18CA-M3 be used for both AC and DC line protection?
Yes, the 3.0C18CA-M3 is bidirectional and functions identically for positive and negative transients, making it suitable for AC line protection (e.g., 24 VAC control signals) and DC bus protection (e.g., 18 V supply rails). Its symmetric VBR range (20.0–22.1 V) and matched clamping behavior ensure consistent performance regardless of voltage polarity - a key advantage over unidirectional TVS diodes that require external biasing for AC use.
What is the ESD withstand capability of the 3.0C18CA-M3?
The 3.0C18CA-M3 is rated for 30 kV human-body-model ESD per IEC 61000-4-2 in both contact and air-discharge modes, as confirmed in the Vishay datasheet. This immunity level exceeds common industrial and telecom ESD requirements and is intrinsic to the device's silicon structure and packaging - no external circuitry is needed to achieve this rating. The 3.0C18CA-M3 delivers this performance without derating across its full −55 °C to +175 °C operating range.
3.0C18CA-M3/I Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay
- 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):
- 18V
- Voltage - Breakdown (Min):
- 20V
- Voltage - Clamping (Max) @ Ipp:
- 29.2V
- Current - Peak Pulse (10/1000µs):
- 103A
- Power - Peak Pulse:
- 3000W (3kW)
- Power Line Protection:
- No
- Applications:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
3.0C18CA-M3/I FAQ
1.How can I place an order for 3.0C18CA-M3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for 3.0C18CA-M3/I 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 3.0C18CA-M3/I reliable?
The price and inventory of 3.0C18CA-M3/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 3.0C18CA-M3/I is usually 5 days.
3.What payment methods are accepted for 3.0C18CA-M3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 3.0C18CA-M3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 3.0C18CA-M3/I?
3.0C18CA-M3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 3.0C18CA-M3/I 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 3.0C18CA-M3/I?
For technical support, including 3.0C18CA-M3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 3.0C18CA-M3/I requirements.
6.How does Aetrix verify that 3.0C18CA-M3/I is sourced from the original manufacturer or authorized distributors?
All 3.0C18CA-M3/I 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 3.0C18CA-M3/I meets industry standards.
7.What is the process for return or replacement of 3.0C18CA-M3/I?
All 3.0C18CA-M3/I units undergo pre-shipment inspection (PSI). If there is an issue with 3.0C18CA-M3/I, 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 3.0C18CA-M3/I part is unused and in its original packaging.
Return procedure for 3.0C18CA-M3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
3.0C18CA-M3/I 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 …
