My Inquiry
My Account
Diodes Incorporated 3.0SMCJ18A-13
- Part No.:
- 3.0SMCJ18A-13
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
3.0SMCJ18A-13.pdf
- Description:
- TRANSIENT VOLTAGE SUPPRESSOR SMC
- Quantity:
- Payment:
- Shipping:
Inventory:8,508
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
3.0SMCJ18A-13 from Diodes Incorporated is a unidirectional 3000W surface-mount transient voltage suppressor (TVS) diode with 18V reverse standoff voltage, 20.0–22.1V breakdown range at 1mA, and 29.2V max clamping voltage at 102.7A peak pulse current. It provides IEC-61000-4-2 ESD protection (30kV air/30kV contact), HBM 8kV, and operates from –55°C to +150°C in automotive and industrial power rail surge suppression.
For engineers reviewing the 3.0SMCJ18A-13 datasheet, 3.0SMCJ18A-13 pinout, 3.0SMCJ18A-13 application, or 3.0SMCJ18A-13 equivalent, this device is selected for high-energy transient suppression on DC power inputs, USB VBUS lines, and motor drive gate driver supplies where low clamping voltage and fast response (<1ns) are critical to protect downstream MOSFETs and controllers.
Technical Context
This TVS diode uses a glass-passivated silicon junction optimized for unidirectional clamping, enabling rapid avalanche breakdown under transient overvoltage events. Its 3000W peak pulse power rating is defined per 10×1000μs waveform, with thermal derating above +25°C ambient per JEDEC-standard curve.
The device features a cathode band marking for polarity identification, matte tin-plated leads compliant with MIL-STD-202 Method 208, and meets RoHS 3, halogen-free, and AEC-Q200-compatible reliability requirements when used in qualified automotive designs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 3000W - sustains 10×1000μs transients without failure; enables robust protection against lightning-induced surges in industrial power supplies. |
| Reverse Standoff Voltage (VRWM) | 18.0V - maximum continuous DC operating voltage before leakage exceeds 5μA; sets safe margin below 24V system rails. |
| Breakdown Voltage (VBR) | 20.0–22.1V @ 1mA - tight tolerance ensures predictable turn-on during overvoltage; avoids false triggering near nominal rail. |
| Clamping Voltage (VC) | 29.2V @ 102.7A - limits voltage seen by protected ICs during worst-case surge; keeps downstream 30V-rated components within safe operating area. |
| ESD Rating | 30kV air / 30kV contact per IEC-61000-4-2 - protects exposed connectors from human-body discharge events without external shielding. |
| Operating Temperature | –55°C to +150°C - supports under-hood automotive use and industrial environments with wide thermal cycling. |
Pinout & Package
Package: SMC (DO-214AB), molded plastic, UL 94V-0 rated, 0.21g weight. Cathode band denotes terminal polarity; anode connects to ground or low-side return path.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unmarked side) | Low-side connection point | Connected to system ground or return path; completes clamping loop during transient events. |
| Cathode (banded side) | High-side connection point | Connected to protected line (e.g., 24V input); conducts avalanche current to ground when VRWM exceeded. |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated die construction | Ensures stable breakdown characteristics and long-term reliability under repeated surge stress without parameter drift. |
| Lead-free, RoHS 3 & halogen-free | Complies with EU Directive 2015/863/EU and automotive green standards; eliminates bromine & antimony compounds (<900ppm Br/Cl, <1000ppm Sb). |
| IEC-61000-4-2 ESD immunity | 30kV contact/air discharge capability enables direct placement on board-level interfaces without additional ESD staging. |
| JEDEC-qualified high-reliability | Qualified to AEC-Q200 stress test levels for temperature cycling, humidity bias, and surge endurance-validates suitability for automotive PPAP programs. |
Applications
| Industrial PLC Power Input | Automotive Body Control Module |
|---|---|
|
Use Scenario: 24V DC input rail of programmable logic controller exposed to load dump and inductive switching transients. IC Role / Device Role / Timing Role: Unidirectional TVS clamping element placed between input connector and upstream fuse, shunting surge energy to chassis ground. Use Value: 29.2V clamping voltage prevents overvoltage damage to 30V-rated DC-DC converters and microcontroller power supplies during ISO 16750-2 load dump events. |
Use Scenario: 12V battery-supplied body control module with LIN bus interface and window motor drivers. IC Role / Device Role / Timing Role: Primary surge suppressor on main VBAT rail, positioned upstream of LDO regulators and CAN/LIN transceivers. Use Value: 3000W peak power rating absorbs 100A/10ms load dump pulses per ISO 7637-2, maintaining rail integrity during engine cranking and alternator regulation faults. |
| USB-C VBUS Protection | Motor Drive Gate Driver Supply |
|
Use Scenario: VBUS line of USB-C receptacle in portable medical equipment requiring ESD-safe hot-plug operation. IC Role / Device Role / Timing Role: Fast-response unidirectional clamp placed adjacent to connector, referenced to system ground. Use Value: 30kV IEC-61000-4-2 contact ESD rating prevents latch-up or oxide rupture in USB PD controllers during field service insertion. |
Use Scenario: 15V isolated gate driver supply in BLDC inverter stage subject to Miller-induced voltage spikes. IC Role / Device Role / Timing Role: Rail clamp protecting gate driver IC's VDD pin from dv/dt-induced overshoot during high-side FET switching. Use Value: Sub-1ns response time and 29.2V clamping limit ensure gate oxide stress remains below 20V, preventing premature driver failure in 600V+ systems. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ18A-13 (Diodes Inc.) | Same 18V VRWM but 600W peak power; smaller SMB package (3.5mm × 4.6mm vs SMC's 6.2mm × 7.1mm). | Limited to lower-energy transients (e.g., I/O lines); insufficient for 24V power rail load dump. | Select when board space is constrained and surge energy ≤600W; verify thermal pad area matches SMB footprint. |
| SMCJ18A (ON Semiconductor) | Identical 3000W rating, 18V VRWM, and SMC package; minor differences in clamping voltage (29.4V vs 29.2V) and leakage (<5μA vs 5μA). | Drop-in compatible for most designs; requires validation of date-code traceability and AEC-Q200 documentation alignment. | Choose for multi-source procurement; confirm compliance with same JEDEC thermal derating curves and moisture sensitivity level (MSL 1). |
Compared with SMBJ18A-13, the 3.0SMCJ18A-13 delivers 5× higher surge energy handling for power rail protection; versus SMCCJ18A, it offers identical performance with Diodes' validated RoHS 3 and halogen-free process control.
Availability
3.0SMCJ18A-13 is available at Aetrix Electronics and suitable for industrial PLC power inputs, automotive body control modules, USB-C VBUS protection, and motor drive gate driver supplies requiring stable component supply across extended production lifecycles.
Supply support for 3.0SMCJ18A-13 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
Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, headquartered in Plano, Texas, with design centers across Asia and manufacturing in ASE, J-Devices, and its own facilities.
The 3.0SMCJ series belongs to Diodes' high-power TVS portfolio designed specifically for automotive-grade and industrial-grade surge immunity, targeting ISO 16750-2, ISO 7637-2, and IEC 61000-4-5 compliance in harsh-environment applications.
FAQ
What is the maximum clamping voltage of the 3.0SMCJ18A-13 under full-rated surge current?
The maximum clamping voltage is 29.2V at 102.7A peak pulse current, measured per the 10×1000μs waveform defined in Figure 2 of DS30818. This value is guaranteed across the full operating temperature range (–55°C to +150°C) and represents the upper bound of voltage imposed on protected circuitry during worst-case transient events.
Is the 3.0SMCJ18A-13 suitable for bidirectional signal line protection?
No - the "A" suffix indicates unidirectional configuration with a cathode band; it conducts only in reverse-bias avalanche mode. For bidirectional protection (e.g., RS-485, CAN bus), the "CA" variant (e.g., 3.0SMCJ18CA-13) must be used, which has symmetrical breakdown in both polarities and no polarity marking.
Does the 3.0SMCJ18A-13 require a heatsink for 3000W surge dissipation?
No external heatsink is required - the 3000W rating applies to non-repetitive 10×1000μs pulses with ≤4 pulses per minute. Thermal design relies on PCB copper area: the datasheet specifies 8.00mm² (0.013mm thick) land pads per terminal to meet JEDEC derating curves without added thermal mass.
How does the 3.0SMCJ18A-13 compare to standard Zener diodes in surge suppression?
Unlike general-purpose Zeners, this device is engineered for transient suppression: it features lower dynamic impedance, tighter VBR tolerance (±5%), guaranteed clamping performance under high di/dt, and validated 3000W pulse handling. Standard Zeners lack specified surge ratings, exhibit higher clamping voltages at high currents, and degrade rapidly under repeated transients.
3.0SMCJ18A-13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Package/Case:
- DO-214AB, SMC
- Series:
- 3.0SMCJ
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 18V
- Voltage - Breakdown (Min):
- 20V
- Voltage - Clamping (Max) @ Ipp:
- 29.2V
- Current - Peak Pulse (10/1000µs):
- 102.7A
- Power - Peak Pulse:
- 3000W (3kW)
- 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:
- SMC
3.0SMCJ18A-13 FAQ
1.How can I place an order for 3.0SMCJ18A-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for 3.0SMCJ18A-13 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 3.0SMCJ18A-13 reliable?
The price and inventory of 3.0SMCJ18A-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 3.0SMCJ18A-13 is usually 5 days.
3.What payment methods are accepted for 3.0SMCJ18A-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 3.0SMCJ18A-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 3.0SMCJ18A-13?
3.0SMCJ18A-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 3.0SMCJ18A-13 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 3.0SMCJ18A-13?
For technical support, including 3.0SMCJ18A-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 3.0SMCJ18A-13 requirements.
6.How does Aetrix verify that 3.0SMCJ18A-13 is sourced from the original manufacturer or authorized distributors?
All 3.0SMCJ18A-13 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 3.0SMCJ18A-13 meets industry standards.
7.What is the process for return or replacement of 3.0SMCJ18A-13?
All 3.0SMCJ18A-13 units undergo pre-shipment inspection (PSI). If there is an issue with 3.0SMCJ18A-13, 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 3.0SMCJ18A-13 part is unused and in its original packaging.
Return procedure for 3.0SMCJ18A-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
3.0SMCJ18A-13 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
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 …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
