My Inquiry
My Account
Diodes Incorporated 3.0SMCJ33AQ-13
- Part No.:
- 3.0SMCJ33AQ-13
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
3.0SMCJ33AQ-13.pdf
- Description:
- TRANSIENT VOLTAGE SUPPRESSOR SMC
- Quantity:
- Payment:
- Shipping:
Inventory:7,796
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
3.0SMCJ33AQ-13 from Diodes Incorporated is a unidirectional 33V standoff transient voltage suppressor (TVS) diode in SMC package, rated for 3000W peak pulse power, 53.3V clamping voltage at 56.3A peak pulse current, and qualified to AEC-Q101 for automotive applications. It protects DC power rails and signal lines against ESD (30kV air/30kV contact), lightning surges, and load dump transients in engine control units and ADAS camera modules.
For engineers reviewing the 3.0SMCJ33AQ-13 datasheet, 3.0SMCJ33AQ-13 pinout, 3.0SMCJ33AQ-13 application, or 3.0SMCJ33AQ-13 equivalent, this page delivers verified electrical parameters, validated SMC package layout, automotive-grade reliability context, and direct substitution guidance for 33V TVS selection in harsh-environment electronics.
Technical Context
This unidirectional TVS operates as a voltage-clamped shunt protector: it remains high-impedance below 33V reverse standoff (VRWM), breaks down between 36.7V–40.6V (VBR @ 1mA), and clamps transients to ≤53.3V at 56.3A (10/1000μs waveform). Its glass-passivated junction ensures stable leakage (<5μA at VRWM) and repeatable breakdown behavior across temperature.
Designed for automotive-grade robustness, it meets AEC-Q101 stress tests including HTGB, HTRB, and TCT, with operating junction temperature range of –55°C to +150°C and moisture sensitivity level 1. The SMC package supports 3000W pulse dissipation when mounted on 8mm² copper land patterns per JEDEC standards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 3000W - sustains 10/1000μs surge events without failure under defined PCB layout |
| Reverse Standoff Voltage | 33.0V - maximum continuous DC or RMS voltage before significant leakage begins |
| Breakdown Voltage | 36.7V–40.6V @ 1mA - precise conduction onset window enabling tight system-level overvoltage margin |
| Clamping Voltage | 53.3V @ 56.3A - limits downstream IC voltage stress during worst-case surge conditions |
| ESD Rating | 30kV air / 30kV contact per IEC 61000-4-2 - eliminates need for external ESD diodes in CAN/LIN bus interfaces |
| Operating Temperature | –55°C to +150°C - supports under-hood placement in engine management and transmission control modules |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, molded plastic body with matte tin-plated leads; UL 94V-0 rated; weight ≈0.21g; cathode band denotes polarity for unidirectional operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference node | Connected to ground or low-impedance return path; defines clamping reference point |
| Cathode | Protected line input | Connected to line being protected (e.g., 12V battery rail); conducts surge current to anode |
Key Features
| Feature | Design Value |
|---|---|
| 3000W Peak Pulse Power | Enables single-device protection against ISO 7637-2 Pulse 5a (load dump) up to 120V/100ms in 12V systems |
| AEC-Q101 Qualified | Validated for automotive use with PPAP capability, IATF 16949 manufacturing, and full reliability test reporting |
| Glass-Passivated Junction | Ensures long-term parameter stability and low parametric drift under thermal cycling and humidity exposure |
| RoHS & Halogen-Free | Complies with EU RoHS 3 (2015/863/EU) and Diodes' "Green" definition (<900ppm Br/Cl, <1000ppm Sb) |
Applications
| Automotive Engine Control Unit (ECU) | ADAS Camera Power Input |
|---|---|
Use Scenario: Protects 12V supply rail from alternator load dump transients and ISO 7637-2 Pulse 5a events. IC Role / Device Role: Unidirectional shunt TVS placed between battery rail and local DC-DC input. Use Value: Clamps 120V/100ms load dump to ≤53.3V, preventing damage to buck converter ICs and microcontrollers. |
Use Scenario: Shields FPD-Link III or GMSL2 camera module power input from ESD and cable discharge events. IC Role / Device Role: Primary front-end surge suppression before LDO or PMIC input stage. Use Value: Withstands 30kV contact ESD per IEC 61000-4-2, eliminating secondary protection components. |
| Industrial PLC Digital Input Module | Commercial Telematics OBD-II Interface |
Use Scenario: Guards 24V digital input channels against field-induced surges and inductive switching spikes. IC Role / Device Role: Line-to-ground TVS on each optocoupler input channel. Use Value: 3000W rating handles repetitive 1kV/500Ω ring wave surges (IEC 61000-4-5 Level 3) without degradation. |
Use Scenario: Secures 12V power and CAN_H/CAN_L lines in vehicle telematics gateways connected to OBD-II port. IC Role / Device Role: Dedicated TVS on VBAT rail upstream of power management IC. Use Value: AEC-Q101 qualification ensures compliance with automotive OEM requirements for aftermarket connectivity hardware. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional 33V TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ33A | 200W peak power, SMA package, lower clamping (53.3V same), 10x lower surge current (18.8A) | Not suitable for load dump; limited to ESD and low-energy transients | Select only for space-constrained non-automotive designs where 3000W surge immunity is unnecessary |
| 1.5SMCJ33A | 1500W peak power, same SMC package, identical VRWM/VBR/VC, but half the energy handling | Meets ISO 7637-2 Pulse 1/2/3a but not Pulse 5a; insufficient for alternator load dump | Use where cost reduction is critical and system-level surge testing confirms 1500W sufficiency |
Compared with SMAJ33A and 1.5SMCJ33A, the 3.0SMCJ33AQ-13 uniquely delivers full 3000W automotive load dump immunity in the SMC footprint while maintaining AEC-Q101 qualification-enabling single-part compliance across power rail, CAN, and sensor interface protection tiers.
Availability
3.0SMCJ33AQ-13 is available at Aetrix Electronics and suitable for automotive engine control units, ADAS camera modules, industrial PLC input protection, and telematics OBD-II interfaces requiring stable component supply with full traceability and lifecycle continuity.
Supply support for 3.0SMCJ33AQ-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 semiconductor company specializing in discrete, analog, and mixed-signal solutions, with design, manufacturing, and distribution operations across Asia, the Americas, and Europe.
The 3.0SMCJ series belongs to Diodes' automotive-qualified TVS portfolio, engineered specifically for high-energy transient suppression in 12V/24V vehicle subsystems meeting AEC-Q101 and ISO 7637-2 requirements.
FAQ
What does the 'Q' suffix in 3.0SMCJ33AQ-13 signify?
The 'Q' suffix indicates AEC-Q101 qualification, meaning the device has passed stress tests including high-temperature reverse bias, high-temperature operating life, and temperature cycling. It is manufactured in IATF 16949-certified facilities and supports PPAP documentation for automotive OEMs.
Can 3.0SMCJ33AQ-13 be used in bidirectional configurations?
No - the 'Q' variant is unidirectional only, with a cathode band marking. Bidirectional operation requires the '3.0SMCJ33CA-13' part number, which lacks polarity marking and provides symmetrical clamping for AC-coupled lines like RS-485 or USB data lines.
What PCB layout guidelines ensure full 3000W performance?
To achieve rated 3000W pulse power, mount the device on 8.00mm² copper land areas (minimum 0.013mm thick) per Diodes' DS30818 Fig. 1 derating curve. Avoid thermal vias directly under the die; use perimeter thermal reliefs and maintain ≥1.5mm clearance to adjacent components.
How does its clamping voltage compare to competing 33V TVS diodes?
At 56.3A (10/1000μs), its 53.3V clamping voltage matches industry benchmarks for 33V-rated devices (e.g., Vishay SMA6J33A: 53.3V, ON Semi 1.5SMCJ33A: 53.3V). No performance advantage exists in clamping alone - differentiation lies in AEC-Q101 qualification and guaranteed 3000W energy absorption.
3.0SMCJ33AQ-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):
- 33V
- Voltage - Breakdown (Min):
- 36.7V
- Voltage - Clamping (Max) @ Ipp:
- 53.3V
- Current - Peak Pulse (10/1000µs):
- 56.3A
- Power - Peak Pulse:
- 3000W (3kW)
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SMC
3.0SMCJ33AQ-13 FAQ
1.How can I place an order for 3.0SMCJ33AQ-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for 3.0SMCJ33AQ-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 3.0SMCJ33AQ-13 reliable?
The price and inventory of 3.0SMCJ33AQ-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 3.0SMCJ33AQ-13 is usually 5 days.
3.What payment methods are accepted for 3.0SMCJ33AQ-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 3.0SMCJ33AQ-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 3.0SMCJ33AQ-13?
3.0SMCJ33AQ-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 3.0SMCJ33AQ-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 3.0SMCJ33AQ-13?
For technical support, including 3.0SMCJ33AQ-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 3.0SMCJ33AQ-13 requirements.
6.How does Aetrix verify that 3.0SMCJ33AQ-13 is sourced from the original manufacturer or authorized distributors?
All 3.0SMCJ33AQ-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 3.0SMCJ33AQ-13 meets industry standards.
7.What is the process for return or replacement of 3.0SMCJ33AQ-13?
All 3.0SMCJ33AQ-13 units undergo pre-shipment inspection (PSI). If there is an issue with 3.0SMCJ33AQ-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 3.0SMCJ33AQ-13 part is unused and in its original packaging.
Return procedure for 3.0SMCJ33AQ-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
3.0SMCJ33AQ-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…
