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Diodes Incorporated SMAJ9.0CAQ-13-F
- Part No.:
- SMAJ9.0CAQ-13-F
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAJ9.0CAQ-13-F.pdf
- Description:
- TRANSIENT VOLTAGE SUPPRESSOR PP
- Quantity:
- Payment:
- Shipping:
Inventory:8,478
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Product details
Overview
SMAJ9.0CAQ-13-F from Diodes Incorporated is a bi-directional 400W automotive transient voltage suppressor (TVS) diode with 9.0V reverse standoff voltage, 15.4V max clamping voltage at 26.0A peak pulse current, and AEC-Q101 qualification. It protects CAN, LIN, and sensor interfaces in 12V automotive power domains against ISO7637-2 Pulse 1 (−100V), Pulse 3a (−150V), and ISO10605 ESD (±30kV).
For engineers reviewing the SMAJ9.0CAQ-13-F datasheet, SMAJ9.0CAQ-13-F pinout, SMAJ9.0CAQ-13-F application, or SMAJ9.0CAQ-13-F equivalent, this part is selected for robust bidirectional surge suppression in automotive body control modules, infotainment power rails, and ADAS camera supply lines where low clamping voltage and IATF 16949 traceability are mandatory.
Technical Context
This bi-directional TVS operates symmetrically across both polarities, delivering consistent clamping performance during negative and positive transients. Its glass-passivated junction ensures stable breakdown behavior under repeated surge stress, and its 1.0W steady-state power rating supports continuous leakage management at elevated ambient temperatures.
The device complies with ISO10605 (150pF/330Ω, ±30kV) and ISO7637-2 Pulse 1, 3a, and 3b waveforms - critical for battery-line protection in vehicles with stop-start systems. Its −55°C to +175°C operating junction temperature range enables deployment near engine compartments or power distribution units.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 400W - sustains single 10×1000μs surges up to 26.0A without failure |
| Reverse Standoff Voltage (VRWM) | 9.0V - blocks normal 12V system operation while remaining fully inactive below threshold |
| Max Clamping Voltage (VC) | 15.4V @ IPP = 26.0A - limits downstream IC voltage to safe level during ISO7637-2 Pulse 3a |
| Breakdown Voltage (VBR) | 10.0–11.1V @ IT = 1.0mA - ensures reliable turn-on margin above VRWM for predictable activation |
| Leakage Current (IR) | 0.5µA @ VRWM - negligible standby power draw in always-on vehicle modules |
| Operating Temperature | −55°C to +175°C - qualified for under-hood and powertrain ECU environments |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, molded plastic UL 94V-0 housing; cathode band omitted (bi-directional configuration); moisture sensitivity level 1 per J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 1) | Transient current entry (negative polarity) | Accepts reverse surge energy during negative transients (e.g., ISO7637-2 Pulse 1) |
| Cathode (Pin 2) | Transient current entry (positive polarity) | Accepts forward surge energy during positive transients (e.g., ISO7637-2 Pulse 3b) |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified & PPAP capable | Validated for automotive production use with full change control and IATF 16949 manufacturing |
| Glass-passivated die construction | Ensures long-term parameter stability and resistance to humidity-induced degradation |
| Bi-directional clamping symmetry | Equal 15.4V clamping for ±26.0A pulses - eliminates need for dual unidirectional devices |
| Lead-free, halogen-free, RoHS 3 compliant | Meets EU Directive 2015/863/EU with <900ppm Br, <900ppm Cl, <1000ppm Sb |
Applications
| Body Control Module (BCM) | Infotainment Power Rail |
|---|---|
Use Scenario: Protects microcontroller I/O and CAN transceivers from load dump and alternator ripple in door module ECUs. IC Role / Device Role: Bi-directional TVS placed between 12V input and local LDO regulator input. Use Value: Clamps transients to ≤15.4V, preventing LDO overvoltage shutdown and preserving CAN bus integrity during Pulse 1 (−100V). |
Use Scenario: Shields USB-C PD controller and display power sequencing logic from ignition-switching noise. IC Role / Device Role: Primary surge clamp on 5V/12V rail feeding audio amplifier and touch controller. Use Value: Limits voltage excursions to 15.4V during ISO7637-2 Pulse 3b (+100V), avoiding latch-up in 5V logic interfaces. |
| Rear Camera Power Input | ADAS Radar Sensor Supply |
Use Scenario: Guards MIPI CSI-2 interface power pins against ESD events during connector mating/unmating. IC Role / Device Role: Local TVS mounted adjacent to FPC connector on camera PCB. Use Value: Absorbs ±30kV contact discharge (ISO10605) without degrading signal integrity or inducing reset glitches. |
Use Scenario: Protects 3.3V radar SoC supply from coupled transients induced by nearby high-current motor drivers. IC Role / Device Role: Secondary clamp after primary DC/DC filter, directly at SoC VIN pin. Use Value: Maintains <0.5µA leakage at 9V, eliminating quiescent current impact on radar sleep-mode power budget. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bi-directional automotive TVS applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ9.0CA | No "Q" suffix - not AEC-Q101 qualified; standard commercial grade | Lacks PPAP documentation and IATF 16949 traceability; unsuitable for Tier 1 automotive BOMs | Select only for non-automotive industrial prototypes or cost-sensitive consumer designs |
| TPSM8-9.0 | Same 9.0V VRWM but 600W PPK; larger SMC package (7.1mm × 6.2mm) | Higher surge capacity suits 24V truck systems; incompatible with SMA footprint | Choose when higher energy handling (e.g., ISO7637-2 Pulse 2a +50V at 120A) is required and board space allows SMC |
Compared with SMAJ9.0CAQ-13-F, SMAJ9.0CA lacks automotive qualification and traceability, while TPSM8-9.0 trades footprint compatibility for 50% higher surge capacity - making the original optimal for space-constrained AEC-Q101-compliant 12V modules.
Availability
SMAJ9.0CAQ-13-F is available at Aetrix Electronics and suitable for automotive body electronics, infotainment subsystems, and ADAS camera modules requiring stable component supply with full AEC-Q101 compliance and IATF 16949 traceability.
Supply support for SMAJ9.0CAQ-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.
This device belongs to Diodes' AEC-Q101-qualified SMAJ automotive TVS family, engineered specifically for ISO7637-2 and ISO10605 compliance in 12V vehicle electrical architectures.
FAQ
What does the "Q" suffix signify in SMAJ9.0CAQ-13-F?
The "Q" denotes AEC-Q101 qualification - confirming full automotive-grade testing including HTOL, temperature cycling, and ESD per JEDEC standards. It also indicates production in IATF 16949-certified facilities with PPAP documentation support, distinguishing it from commercial-grade variants like SMAJ9.0CA.
Can SMAJ9.0CAQ-13-F be used in 24V systems?
No - its 9.0V VRWM and 15.4V VC are optimized for 12V nominal systems. In 24V applications, the device would conduct continuously due to system voltage exceeding VRWM, causing thermal runaway. For 24V, select SMAJ24(C)AQ-13-F (24V VRWM, 38.9V VC).
Is the SMAJ9.0CAQ-13-F bi-directional or uni-directional?
It is bi-directional, indicated by the "C" in the part number. Unlike uni-directional versions (e.g., SMAJ9.0AQ-13-F), it has no cathode band and provides symmetrical clamping for both positive and negative transients - essential for protecting differential buses like CAN and LIN.
What is the maximum allowable PCB pad temperature during reflow soldering?
The SMA package supports lead-free reflow per J-STD-020, with peak temperature up to 260°C for ≤30 seconds. The device's 175°C maximum junction temperature and Level 1 moisture sensitivity allow standard SMT processes without pre-bake, provided profile adheres to Diodes' recommended ramp rates and time-above-liquidus limits.
SMAJ9.0CAQ-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):
- 9V
- Voltage - Breakdown (Min):
- 10V
- Voltage - Clamping (Max) @ Ipp:
- 15.4V
- Current - Peak Pulse (10/1000µs):
- 26A
- 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
SMAJ9.0CAQ-13-F FAQ
1.How can I place an order for SMAJ9.0CAQ-13-F through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAJ9.0CAQ-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 SMAJ9.0CAQ-13-F reliable?
The price and inventory of SMAJ9.0CAQ-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 SMAJ9.0CAQ-13-F is usually 5 days.
3.What payment methods are accepted for SMAJ9.0CAQ-13-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ9.0CAQ-13-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAJ9.0CAQ-13-F?
SMAJ9.0CAQ-13-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAJ9.0CAQ-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 SMAJ9.0CAQ-13-F?
For technical support, including SMAJ9.0CAQ-13-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ9.0CAQ-13-F requirements.
6.How does Aetrix verify that SMAJ9.0CAQ-13-F is sourced from the original manufacturer or authorized distributors?
All SMAJ9.0CAQ-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 SMAJ9.0CAQ-13-F meets industry standards.
7.What is the process for return or replacement of SMAJ9.0CAQ-13-F?
All SMAJ9.0CAQ-13-F units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ9.0CAQ-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 SMAJ9.0CAQ-13-F part is unused and in its original packaging.
Return procedure for SMAJ9.0CAQ-13-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMAJ9.0CAQ-13-F Tags
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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