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Diodes Incorporated SMAJ110CAQ-13-F
- Part No.:
- SMAJ110CAQ-13-F
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAJ110CAQ-13-F.pdf
- Description:
- TRANSIENT VOLTAGE SUPPRESSOR PP
- Quantity:
- Payment:
- Shipping:
Inventory:3,166
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Product details
Overview
SMAJ110CAQ-13-F from Diodes Incorporated is a bi-directional automotive-grade transient voltage suppressor (TVS) diode in SMA package, rated for 400W peak pulse power, 110V reverse standoff voltage (VRWM), and 177V maximum clamping voltage (VC) at 2.3A peak pulse current (IPP). It protects CAN bus, LIN, and body control modules against ISO7637-2 Pulse 1/2a/3a/3b transients and ISO10605 ESD events.
For engineers reviewing the SMAJ110CAQ-13-F datasheet, SMAJ110CAQ-13-F pinout, SMAJ110CAQ-13-F application, or SMAJ110CAQ-13-F equivalent, this device is selected for robust overvoltage protection in 12V/24V automotive subsystems where bidirectional surge immunity, AEC-Q101 qualification, and low leakage (<0.5µA at VRWM) are critical.
Technical Context
This bi-directional TVS operates symmetrically across both polarities, with breakdown voltage (VBR) specified at 122–135V (min/max) under 1.0mA test current. Its glass-passivated junction ensures stable clamping performance across -55°C to +175°C operating temperature range.
Clamping response follows the standardized 10/1000µs waveform per IEC 61000-4-5, delivering 177V VC at IPP = 2.3A. Steady-state power dissipation is 1.0W at TL = +75°C, with thermal resistance from junction-to-lead (RθJL) enabling reliable operation in high-ambient engine bay environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 400W - Withstands ISO7637-2 Pulse 3b (+100V) surges without failure |
| Reverse Standoff Voltage (VRWM) | 110V - Blocks normal 24V system transients while remaining inactive below threshold |
| Max Clamping Voltage (VC) | 177V @ IPP = 2.3A - Limits downstream IC voltage to safe level during 10/1000µs surge |
| Breakdown Voltage (VBR) | 122–135V @ IT = 1.0mA - Ensures precise turn-on margin above VRWM for predictable protection |
| Leakage Current (IR) | <0.5µA @ VRWM - Minimizes standby power loss in always-on vehicle networks |
| Operating Temperature | -55°C to +175°C - Supports placement near engines, battery terminals, and under-hood ECUs |
Pinout & Package
Package: SMA (Surface-Mount Axial), molded plastic UL 94V-0, moisture sensitivity level 1, weight ≈0.064g. Cathode band omitted - bi-directional symmetry eliminates polarity marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (End 1) | Surge Input Terminal | Accepts transient energy from either polarity; connects to protected line (e.g., CAN_H) |
| Cathode (End 2) | Surge Input Terminal | Completes symmetrical clamping path; ties to same protected line or chassis ground reference |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 Qualified | Validated for automotive use with PPAP capability and IATF 16949 manufacturing |
| Glass Passivated Junction | Enhances long-term reliability and stability of VBR/VC under thermal cycling |
| Bi-directional Symmetry | Enables single-device protection of AC-coupled or differential buses (e.g., CAN, LIN) |
| Lead-Free & Halogen-Free | RoHS 3 compliant; <900ppm Br/Cl, <1000ppm Sb - meets global automotive environmental mandates |
Applications
| Automotive Body Control Module (BCM) | Infotainment Head Unit Power Input |
|---|---|
Use Scenario: Protects BCM microcontroller I/O lines from load dump and alternator ripple-induced transients. IC Role / Device Role / Timing Role: Bidirectional TVS clamps ±100V pulses on 12V supply rail and sensor inputs. Use Value: Prevents latch-up or permanent damage to 3.3V/5V logic interfaces during ISO7637-2 Pulse 3b events. |
Use Scenario: Shields USB-C and HDMI power rails in head units from hot-swap and ESD events. IC Role / Device Role / Timing Role: Fast-response clamping (sub-ns) limits voltage overshoot during 30kV contact discharge (ISO10605). Use Value: Maintains signal integrity and avoids reset faults during factory handling and end-user interaction. |
| CAN FD Network Node Protection | Electric Power Steering (EPS) Sensor Interface |
Use Scenario: Installed on CAN_H/CAN_L lines of ADAS domain controllers to absorb coupled transients. IC Role / Device Role / Timing Role: Bi-directional clamping absorbs differential-mode surges without disrupting 5Mbps FD signaling. Use Value: Enables compliance with ISO11898-2 immunity requirements while preserving bus timing margins. |
Use Scenario: Guards analog torque sensor outputs against battery disconnection spikes in EPS motor control units. IC Role / Device Role / Timing Role: Low-leakage (0.5µA) operation prevents DC offset drift in precision ratiometric sensing paths. Use Value: Ensures functional safety (ASIL-B) by maintaining sensor accuracy during ISO7637-2 Pulse 1 (-100V) events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bi-directional TVS protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SAC110-13-F | Same VRWM (110V) but lower PPK (300W); higher VC (185V @ IPP=2.1A) | Limited to less severe surge environments (e.g., interior modules only) | Select when cost sensitivity outweighs need for full 400W margin in engine bay locations |
| SMCJ110CA | Higher PPK (1500W), larger SMC package (7.1mm × 6.2mm), same VRWM/VC specs | Requires more PCB area; suited for high-energy front-end protection (e.g., battery input) | Choose for primary-level protection where 400W is insufficient and board space allows SMC footprint |
Compared with SAC110-13-F and SMCJ110CA, SMAJ110CAQ-13-F delivers optimal balance of AEC-Q101 compliance, 400W surge capacity, and compact SMA footprint-making it ideal for secondary-level protection on space-constrained automotive PCBs requiring verified bidirectional immunity.
Availability
SMAJ110CAQ-13-F is available at Aetrix Electronics and suitable for automotive body electronics, infotainment systems, and ADAS sensor interfaces requiring stable component supply across extended production lifecycles.
Supply support for SMAJ110CAQ-13-F 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, specializing in high-reliability components for automotive, industrial, and computing markets.
The SMAJ series is part of Diodes' AEC-Q101-qualified TVS portfolio, engineered specifically for ISO7637-2 and ISO10605 compliance in 12V/24V vehicle electrical architectures.
FAQ
What does the "C" suffix in SMAJ110CAQ-13-F indicate?
The "C" denotes bi-directional configuration, meaning the device provides symmetrical clamping for both positive and negative transients. Unlike uni-directional variants (e.g., SMAJ110AQ), it has no cathode band and functions identically regardless of voltage polarity applied across its terminals - essential for protecting differential buses like CAN or LIN.
How does SMAJ110CAQ-13-F differ from standard industrial TVS diodes?
SMAJ110CAQ-13-F is AEC-Q101 qualified, manufactured in IATF 16949-certified facilities, and PPAP-capable - requirements absent in generic industrial TVS parts. It also meets stricter leakage (<0.5µA), temperature range (-55°C to +175°C), and surge waveform compliance (ISO7637-2 Pulse 1/2a/3a/3b) needed for automotive deployment.
Can SMAJ110CAQ-13-F be used on 48V mild-hybrid systems?
No - its 110V VRWM and 177V VC are optimized for 12V/24V architectures. For 48V systems, Diodes recommends SMAJ150CAQ-13-F (VRWM = 150V, VC = 243V) or SMCJ200CA (VRWM = 200V), which provide appropriate margin above nominal bus voltage and transient overloads.
What is the significance of the "AQ" suffix in the part number?
The "AQ" suffix indicates automotive qualification: AEC-Q101 stress-tested, manufactured in IATF 16949-certified facilities, and supported with PPAP documentation. It distinguishes this grade from commercial versions (e.g., SMAJ110CA-13-F), which lack automotive change control, traceability, and extended temperature validation.
SMAJ110CAQ-13-F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Package/Case:
- DO-214AC, SMA
- Series:
- -
- 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):
- 2.3A
- Power - Peak Pulse:
- 400W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SMA
SMAJ110CAQ-13-F FAQ
1.How can I place an order for SMAJ110CAQ-13-F through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAJ110CAQ-13-F 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 SMAJ110CAQ-13-F reliable?
The price and inventory of SMAJ110CAQ-13-F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMAJ110CAQ-13-F is usually 5 days.
3.What payment methods are accepted for SMAJ110CAQ-13-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ110CAQ-13-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAJ110CAQ-13-F?
SMAJ110CAQ-13-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAJ110CAQ-13-F 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 SMAJ110CAQ-13-F?
For technical support, including SMAJ110CAQ-13-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ110CAQ-13-F requirements.
6.How does Aetrix verify that SMAJ110CAQ-13-F is sourced from the original manufacturer or authorized distributors?
All SMAJ110CAQ-13-F 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 SMAJ110CAQ-13-F meets industry standards.
7.What is the process for return or replacement of SMAJ110CAQ-13-F?
All SMAJ110CAQ-13-F units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ110CAQ-13-F, 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 SMAJ110CAQ-13-F part is unused and in its original packaging.
Return procedure for SMAJ110CAQ-13-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMAJ110CAQ-13-F Tags
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