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Diodes Incorporated SMBJ26CAQ-13-F
- Part No.:
- SMBJ26CAQ-13-F
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ26CAQ-13-F.pdf
- Description:
- TVS DIODE 26VWM 42.1VC SMB
- Quantity:
- Payment:
- Shipping:
Inventory:466
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Product details
Overview
SMBJ26CAQ-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, 26V reverse standoff voltage (VRWM), and clamping voltage of 42.1V at 14.2A peak pulse current. It protects CAN, LIN, and sensor interfaces in 12V/24V vehicle subsystems against ISO7637-2 Pulse 1/2a/3a/3b transients and ISO10605 ESD events.
For engineers reviewing the SMBJ26CAQ-13-F datasheet, SMBJ26CAQ-13-F pinout, SMBJ26CAQ-13-F application, or SMBJ26CAQ-13-F equivalent, this part delivers AEC-Q101 qualified surge immunity with verified clamping performance, bi-directional symmetry, and IATF 16949-manufactured traceability - critical for body control modules, ADAS camera links, and infotainment power rails.
Technical Context
This bi-directional TVS operates symmetrically across both polarities, enabling protection of AC-coupled or differential signal lines without polarity constraints. Its 26V VRWM aligns with nominal 24V automotive battery systems while maintaining margin above regulated rail voltages.
Clamping occurs at 42.1V under 10×1000μs waveform, limiting downstream voltage stress during ISO7637-2 Pulse 3b (+150V) and Pulse 1 (−150V) events. The device sustains 100A non-repetitive forward surge (8.3ms half-sine) and exhibits <0.5μA leakage at VRWM.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 600W - withstands ISO7637-2 Pulse 1 (−150V) and Pulse 3b (+150V) without failure |
| Reverse Standoff Voltage (VRWM) | 26V - blocks normal 24V system operation while triggering only during overvoltage events |
| Clamping Voltage (VC) | 42.1V @ IPP = 14.2A - limits protected circuit voltage to safe level during 10×1000μs surge |
| Breakdown Voltage (VBR) | 28.9–31.9V @ IT = 1mA - ensures reliable turn-on with defined voltage margin above VRWM |
| Leakage Current (IR) | <0.5μA @ 26V - negligible standby power loss in always-on automotive modules |
| Operating Temperature | −55°C to +175°C - supports under-hood placement and extended thermal cycling |
Pinout & Package
Package: SMB surface-mount plastic package (UL 94V-0), 0.1g mass, moisture sensitivity level 1 per J-STD-020. Dimensions: 3.30–3.94mm (D) × 5.00–5.59mm (E) × 2.00–2.50mm (A).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal (bi-directional) | Terminal accepts surge current in either polarity; no cathode band marking on C-suffix parts |
| Cathode | Current exit terminal (bi-directional) | Terminal sinks surge current in either polarity; symmetric conduction enables AC line protection |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive use with temperature cycling, HTRB, and surge lifetime testing per stress conditions |
| ISO10605 & ISO7637-2 compliance | Passes 30kV air/contact ESD and full 4-pulse transient suite without parameter shift or visual damage |
| Bi-directional symmetry | Identical VBR, VC, and IR characteristics in both directions - eliminates polarity routing constraints |
| Lead-free & halogen-free | RoHS 3 compliant (2015/863/EU); Br+Cl <1500ppm, Sb <1000ppm - meets Tier-1 automotive green requirements |
Applications
| Automotive Body Control Module (BCM) | ADAS Camera Power Input |
|---|---|
Use Scenario: Protects 12V supply rail feeding microcontroller, relay drivers, and CAN transceivers from load dump and jump-start surges. IC Role / Device Role / Timing Role: Primary clamping device placed upstream of DC/DC converter input. Use Value: Limits voltage to ≤42.1V during −150V ISO7637-2 Pulse 1, preventing MOSFET gate oxide rupture and LDO dropout. |
Use Scenario: Shields 5V/3.3V camera module power and FPD-Link III data lines from ESD and ignition noise. IC Role / Device Role / Timing Role: Bi-directional TVS on power and differential pairs to suppress common-mode transients. Use Value: Maintains signal integrity during 30kV contact discharge by clamping within 1ns, avoiding pixel corruption or frame loss. |
| Infotainment USB-C Port | Electric Power Steering (EPS) Sensor Interface |
Use Scenario: Guards USB-C VBUS and CC lines against hot-plug surges and ESD in center console applications. IC Role / Device Role / Timing Role: Dual-channel protection: one device per line, leveraging bi-directional capability for AC-coupled signals. Use Value: Enables robust 5V VBUS operation while meeting USB-IF ESD spec via sub-45V clamping at 10A. |
Use Scenario: Protects analog outputs of torque and position sensors exposed to motor switching noise in EPS rack assemblies. IC Role / Device Role / Timing Role: Low-leakage (≤0.5μA) TVS on ratiometric sensor output to preserve ADC reference accuracy. Use Value: Prevents offset drift and saturation during +112V ISO7637-2 Pulse 2a by clamping before op-amp input stage breakdown. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bi-directional TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ26CA | No AEC-Q101 qualification; RoHS-compliant but not PPAP-capable; manufactured in non-IATF 16949 facility | Acceptable for non-safety-critical consumer or industrial applications; not approved for OEM automotive BOMs | Select when cost sensitivity outweighs automotive change control and supply chain traceability requirements |
| SAC26C | Same VRWM and VC, but DO-214AB package (larger footprint); 600W rating achieved with higher thermal resistance | Requires PCB redesign due to 7.11mm × 6.22mm outline vs. SMB's 5.59mm × 3.94mm; lower mounting density | Choose only if existing layout uses DO-214AB or requires higher mechanical robustness in high-vibration zones |
Compared with SMBJ26CA and SAC26C, SMBJ26CAQ-13-F uniquely combines AEC-Q101 validation, SMB footprint efficiency, and full ISO7637-2/Pulse 3b capability - making it the sole option for new automotive designs requiring PPAP documentation and IATF 16949 sourcing.
Availability
SMBJ26CAQ-13-F is available at Aetrix Electronics and suitable for automotive body electronics, ADAS camera systems, and infotainment power management requiring stable component supply across multi-year production cycles.
Supply support for SMBJ26CAQ-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 ICs, specializing in high-reliability protection, power management, and signal integrity solutions for automotive, industrial, and computing markets.
This device belongs to Diodes' AEC-Q101-qualified SMBJ-AQ automotive TVS family, engineered specifically to meet stringent ISO7637-2 and ISO10605 requirements in safety-critical vehicle subsystems.
FAQ
What does the 'Q' suffix signify in SMBJ26CAQ-13-F?
The 'Q' denotes AEC-Q101 qualification and PPAP capability. This means the device has undergone accelerated stress testing including temperature cycling, high-temperature reverse bias, and surge lifetime validation per automotive standards - required for inclusion in OEM automotive BOMs.
Can SMBJ26CAQ-13-F replace uni-directional SMBJ26AQ-13-F in existing designs?
No - SMBJ26CAQ-13-F is bi-directional and lacks cathode polarity marking, while SMBJ26AQ-13-F is uni-directional with defined anode/cathode orientation. Substitution would compromise protection on negative-going transients and violate ISO7637-2 Pulse 1 compliance.
What is the maximum allowable PCB pad temperature during reflow soldering?
The SMB package supports lead-free reflow per JEDEC J-STD-020, with peak temperature of 260°C for ≤30 seconds. Preheat ramp rate must not exceed 3°C/s, and time above 217°C must be 60–150 seconds - consistent with IPC-7095 guidelines for automotive-grade assembly.
How does SMBJ26CAQ-13-F perform under repeated surge exposure?
Per DS40740 Rev. 15, it withstands ≥1000 pulses at 4 pulses/minute duty cycle without parameter shift beyond ±10% VRWM or VC. Degradation is monitored via post-stress VBR and IR measurement - validated for 15-year automotive service life under typical usage profiles.
SMBJ26CAQ-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):
- 26V
- Voltage - Breakdown (Min):
- 28.9V
- Voltage - Clamping (Max) @ Ipp:
- 42.1V
- Current - Peak Pulse (10/1000µs):
- 14.2A
- 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
SMBJ26CAQ-13-F FAQ
1.How can I place an order for SMBJ26CAQ-13-F through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ26CAQ-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 SMBJ26CAQ-13-F reliable?
The price and inventory of SMBJ26CAQ-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 SMBJ26CAQ-13-F is usually 5 days.
3.What payment methods are accepted for SMBJ26CAQ-13-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ26CAQ-13-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ26CAQ-13-F?
SMBJ26CAQ-13-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ26CAQ-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 SMBJ26CAQ-13-F?
For technical support, including SMBJ26CAQ-13-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ26CAQ-13-F requirements.
6.How does Aetrix verify that SMBJ26CAQ-13-F is sourced from the original manufacturer or authorized distributors?
All SMBJ26CAQ-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 SMBJ26CAQ-13-F meets industry standards.
7.What is the process for return or replacement of SMBJ26CAQ-13-F?
All SMBJ26CAQ-13-F units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ26CAQ-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 SMBJ26CAQ-13-F part is unused and in its original packaging.
Return procedure for SMBJ26CAQ-13-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ26CAQ-13-F Tags
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ESD9B5.0ST5G
onsemi
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DESD3V3E1BL-7B
Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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onsemi
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DESD5V0U1BB-7
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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