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Diodes Incorporated SMBJ22CAQ-13-F
- Part No.:
- SMBJ22CAQ-13-F
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ22CAQ-13-F.pdf
- Description:
- TVS DIODE 22VWM 35.5VC SMB
- Quantity:
- Payment:
- Shipping:
Inventory:2,143
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Product details
Overview
SMBJ22CAQ-13-F from Diodes Incorporated is a bi-directional automotive-grade transient voltage suppressor (TVS) diode in SMB package, rated for 600W peak pulse power, 22V reverse standoff voltage (VRWM), and 35.5V maximum clamping voltage (VC) at 16.9A peak pulse current-designed to protect CAN, LIN, and sensor interfaces in engine control units against ISO7637-2 Pulse 1/2a/3a/3b and ISO10605 ESD surges.
For engineers reviewing the SMBJ22CAQ-13-F datasheet, SMBJ22CAQ-13-F pinout, SMBJ22CAQ-13-F application, or SMBJ22CAQ-13-F equivalent, key selection criteria include clamping voltage margin vs. system rail, AEC-Q101 qualification status, IATF 16949 manufacturing traceability, bi-directional surge symmetry, and 100A non-repetitive surge capability under 8.3ms half-sine waveform.
Technical Context
This bi-directional TVS operates symmetrically across both polarities with identical breakdown (24.4–27.0V) and clamping (35.5V) characteristics in either direction, enabling robust protection of differential or AC-coupled automotive signal lines without polarity dependency. Its 1.0mA test current ensures stable VBR validation under low-power bias conditions typical in sensor and bus monitoring circuits.
Thermal derating follows a linear 4.8W/°C slope above +25°C ambient, with full 5.0W steady-state dissipation maintained up to +75°C lead temperature-supporting placement near heat-generating ECUs while retaining surge margin. The device's -55°C to +175°C operating junction range aligns with under-hood automotive environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 600W - sustains single 10×1000μs transients common in load-dump and inductive switching events |
| Reverse Standoff Voltage | 22.0V - defines maximum continuous DC or RMS voltage before significant leakage; sets minimum system rail margin |
| Clamping Voltage @ IPP | 35.5V - limits transient voltage seen by downstream ICs during 16.9A surge; critical for 3.3V/5V interface survival |
| Breakdown Voltage Range | 24.4–27.0V - guarantees conduction onset within tight tolerance, ensuring predictable turn-on timing |
| Leakage Current @ VRWM | ≤0.5µA - negligible loading on high-impedance sensor or bus lines at nominal operating voltage |
| Surge Current Rating | 100A (8.3ms half-sine) - withstands worst-case ISO7637-2 Pulse 1 (-150V) and Pulse 3a (-220V) waveforms |
| Operating Temperature | -55°C to +175°C - qualified for direct mounting on powertrain and chassis modules exposed to extreme thermal cycling |
Pinout & Package
Package: SMB (Surface-Mount Small Outline), molded plastic body with UL 94V-0 flammability rating, 0.1g mass, and matte tin-plated terminals solderable per MIL-STD-202 Method 208.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Cathode Band Absent) | Bi-directional terminal | No polarity marking; symmetrical conduction enables placement on differential pairs without orientation check |
| Cathode (Cathode Band Absent) | Bi-directional terminal | Identical electrical behavior as Anode; terminals interchangeable in layout |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 Qualified | Validated for automotive use with stress testing including HTGB, TCT, and HTRB-ensures reliability in safety-critical systems |
| IATF 16949 Manufacturing | Produced in certified facilities with PPAP documentation support-enables seamless integration into Tier-1 BOMs |
| ISO10605 Compliance | Withstands ±30kV air/contact discharge-meets OEM ESD immunity requirements for infotainment and ADAS sensors |
| Halogen & Antimony Free | <900ppm Br, <900ppm Cl, <1000ppm Sb-complies with automotive "Green" material mandates and end-of-life recycling standards |
| Moisture Sensitivity Level 1 | No bake requirement prior to reflow-reduces assembly cost and avoids thermal damage to adjacent components |
Applications
| Engine Control Unit (ECU) Sensor Protection | CAN FD Bus Line Protection |
|---|---|
Use Scenario: Protects crankshaft position, camshaft, and MAP sensors connected to 12V battery-supplied ECU inputs from load dump and alternator ripple. IC Role / Device Role / Timing Role: Bi-directional TVS placed between sensor line and ground, clamping transients before they reach analog front-end or ADC input. Use Value: 35.5V clamping ensures downstream 5V-tolerant comparators and microcontrollers remain within absolute maximum ratings during ISO7637-2 Pulse 1 (-150V). | Use Scenario: Installed on CAN_H/CAN_L differential pair in gateway modules to suppress ESD and coupled noise from nearby high-current actuators. IC Role / Device Role / Timing Role: Symmetric bi-directional suppression maintains signal integrity on both lines without skew or polarity mismatch. Use Value: ≤0.5µA leakage prevents bus bias shift; 22V VRWM allows operation with 12V supply rails while blocking normal-mode noise below clamp threshold. |
| LIN Bus Node Protection | Automotive Camera Module Interface |
Use Scenario: Shields LIN transceivers in door modules and seat controllers from battery transients during jump-start or relay switching. IC Role / Device Role / Timing Role: Low-capacitance TVS placed directly at connector entry point, minimizing stub length to preserve 19.2kbps signal rise time. Use Value: 35.5V VC limits voltage overshoot to <1.5× LIN PHY's 27V abs max, preventing latch-up or permanent damage during Pulse 3b (+150V). | Use Scenario: Protects MIPI CSI-2 data lanes and power rails in rear-view and surround-view cameras mounted in bumper or mirror housings. IC Role / Device Role / Timing Role: Dual-channel placement on VDDIO and differential data lines to handle simultaneous ESD and conducted surges from external connectors. Use Value: -55°C to +175°C TJ range supports operation in sealed camera enclosures where internal temperatures exceed +125°C under solar loading. |
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 |
|---|---|---|---|
| SMBJ22CA-13-F | Same electrical specs but not AEC-Q101 qualified; RoHS-compliant but not PPAP-capable | Restricted to non-automotive industrial or consumer designs lacking change-control requirements | Select only if automotive qualification and IATF 16949 traceability are not required |
| TPSMBS22C | Higher 700W PPK; tighter 24.4–25.9V VBR range; same SMB package and 35.5V VC | Better suited for next-gen 48V mild-hybrid systems requiring extended surge headroom | Prefer when designing for 48V architectures or needing tighter VBR distribution for statistical process control |
Compared with SMBJ22CAQ-13-F, the SMBJ22CA-13-F lacks automotive qualification and supply-chain controls, while TPSMBS22C offers higher surge margin and tighter VBR-but neither provides identical AEC-Q101 + PPAP + IATF 16949 alignment for legacy 12V ECU programs.
Availability
SMBJ22CAQ-13-F is available at Aetrix Electronics and suitable for engine control units, CAN/LIN bus nodes, automotive camera interfaces, and body electronics modules requiring stable component supply across multi-year vehicle production cycles.
Supply support for SMBJ22CAQ-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 semiconductor manufacturer specializing in discrete, analog, and mixed-signal solutions, with design centers in Asia, Europe, and the U.S., and manufacturing in IATF 16949-certified facilities.
The SMBJ(AQ) series targets automotive electronics requiring AEC-Q101 qualification, designed specifically to meet ISO7637-2 and ISO10605 compliance for ECU, infotainment, and ADAS subsystems.
FAQ
What does the 'Q' suffix signify in SMBJ22CAQ-13-F?
The 'Q' denotes AEC-Q101 qualification-confirming the device has passed rigorous stress tests including high-temperature reverse bias, temperature cycling, and highly accelerated life testing per automotive reliability standards. It also indicates production in IATF 16949-certified facilities with full PPAP documentation support.
Is SMBJ22CAQ-13-F unidirectional or bidirectional, and how is polarity identified?
SMBJ22CAQ-13-F is bi-directional, indicated by the 'C' in the part number. Unlike uni-directional variants, it has no cathode band marking-both terminals behave identically, enabling symmetric protection of differential signals like CAN or LIN without orientation constraints during placement.
How does SMBJ22CAQ-13-F perform under repeated surge exposure?
This device is rated for non-repetitive surges only: maximum 4 pulses per minute at 8.3ms half-sine waveform. Repeated application exceeds thermal limits and risks parametric shift or failure. For repetitive threat environments, a hybrid solution combining this TVS with upstream current-limiting resistors or polymer PTCs is required.
Can SMBJ22CAQ-13-F be used in 48V automotive systems?
While rated for 22V standoff, its 35.5V clamping voltage is insufficient for direct 48V rail protection-transients exceeding 35.5V would damage downstream 48V-rated ICs. It remains suitable for protecting 12V sub-systems (e.g., sensors, gateways) within 48V vehicles, but not for primary 48V bus clamping.
SMBJ22CAQ-13-F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Package/Case:
- DO-214AA, SMB
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 22V
- Voltage - Breakdown (Min):
- 24.4V
- Voltage - Clamping (Max) @ Ipp:
- 35.5V
- Current - Peak Pulse (10/1000µs):
- 16.9A
- Power - Peak Pulse:
- 600W
- 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:
- SMB
SMBJ22CAQ-13-F FAQ
1.How can I place an order for SMBJ22CAQ-13-F through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ22CAQ-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 SMBJ22CAQ-13-F reliable?
The price and inventory of SMBJ22CAQ-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 SMBJ22CAQ-13-F is usually 5 days.
3.What payment methods are accepted for SMBJ22CAQ-13-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ22CAQ-13-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ22CAQ-13-F?
SMBJ22CAQ-13-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ22CAQ-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 SMBJ22CAQ-13-F?
For technical support, including SMBJ22CAQ-13-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ22CAQ-13-F requirements.
6.How does Aetrix verify that SMBJ22CAQ-13-F is sourced from the original manufacturer or authorized distributors?
All SMBJ22CAQ-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 SMBJ22CAQ-13-F meets industry standards.
7.What is the process for return or replacement of SMBJ22CAQ-13-F?
All SMBJ22CAQ-13-F units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ22CAQ-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 SMBJ22CAQ-13-F part is unused and in its original packaging.
Return procedure for SMBJ22CAQ-13-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ22CAQ-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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