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Diodes Incorporated SMBJ70CAQ-13-F
- Part No.:
- SMBJ70CAQ-13-F
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ70CAQ-13-F.pdf
- Description:
- TRANSIENT VOLTAGE SUPPRESSOR SMB
- Quantity:
- Payment:
- Shipping:
Inventory:3,000
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Product details
Overview
SMBJ70CAQ-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, 70V reverse standoff voltage (VRWM), and 113V max clamping voltage (VC) at 5.3A peak pulse current. It protects CAN, LIN, and sensor interfaces in 12V/24V vehicle subsystems against ISO7637-2 Pulse 1/2a/3a/3b surges and ISO10605 ESD events.
For engineers reviewing the SMBJ70CAQ-13-F datasheet, SMBJ70CAQ-13-F pinout, SMBJ70CAQ-13-F application, or SMBJ70CAQ-13-F equivalent, this part delivers AEC-Q101 qualified surge immunity with verified 30kV air/contact ESD robustness, precise 70V bi-directional clamping, and IATF 16949-manufactured traceability - critical for body control modules, ADAS camera power rails, and infotainment USB-C protection.
Technical Context
This bi-directional TVS operates symmetrically across both polarities, enabling single-device protection of differential or AC-coupled automotive signal lines without polarity constraints. Its 1.0mA breakdown test current and 0.5µA max reverse leakage at VRWM ensure low standby power loss in always-on vehicle networks.
The device uses silicon avalanche junction technology to achieve sub-nanosecond response to transients, with clamping performance validated under standardized 10×1000µs waveform per REA. Thermal derating follows a linear 4.8W/°C slope above +25°C ambient, supporting operation up to +175°C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 600W - sustains 10×1000µs surge without failure in engine bay or chassis-grounded locations |
| Reverse Standoff Voltage (VRWM) | 70V - blocks normal 24V system transients while triggering only above defined overvoltage threshold |
| Max Clamping Voltage (VC) | 113V @ IPP = 5.3A - limits downstream IC stress during ISO7637-2 Pulse 3a (−220V) events |
| Breakdown Voltage (VBR) | 77.8V min / 86.0V max @ IT = 1.0mA - ensures consistent avalanche initiation across production lot |
| Reverse Leakage (IR) | 0.5µA max @ VRWM - negligible current draw on 12V/24V battery circuits during sleep mode |
| Operating Temperature | −55°C to +175°C - qualified for under-hood placement near powertrain ECUs and transmission controllers |
| AEC-Q101 Qualified | Yes - validated for automotive use with PPAP documentation and IATF 16949 manufacturing control |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, molded plastic UL 94V-0 housing; 0.1g mass; moisture sensitivity level 1 per J-STD-020; matte tin lead finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 1) | Bi-directional terminal | Identical electrical behavior as Cathode; no polarity marking required for bi-directional operation |
| Cathode (Pin 2) | Bi-directional terminal | Same avalanche characteristics as Anode; enables symmetrical clamping on differential signals like CAN_H/CAN_L |
Key Features
| Feature | Design Value |
|---|---|
| ISO10605 ESD rating | 30kV air/contact discharge - eliminates need for external ESD diodes on exposed connectors |
| ISO7637-2 compliance | Pulse 1 (−150V), Pulse 2a (+112V), Pulse 3a (−220V), Pulse 3b (+150V) - covers full automotive surge standard set |
| Lead-free & green | RoHS 3 compliant; <900ppm Br, <900ppm Cl, <1000ppm Sb - meets global automotive environmental mandates |
| Steady-state dissipation | 5.0W @ TL = +75°C - supports continuous thermal management in sealed enclosures without forced airflow |
Applications
| Body Control Module (BCM) | ADAS Camera Power Rail |
|---|---|
|
Use Scenario: Protecting LIN bus transceivers and door module microcontrollers from load dump and alternator ripple. IC Role / Device Role / Timing Role: Bi-directional TVS clamp placed between VBAT and GND upstream of LDO input. Use Value: Limits transient voltage to ≤113V during ISO7637-2 Pulse 1 (−150V), preventing latch-up in 5V logic supplies. |
Use Scenario: Safeguarding 12V input to image sensor power management ICs in rear-view cameras. IC Role / Device Role / Timing Role: Primary surge suppression on main camera power line before DC-DC converter. Use Value: Withstands −220V Pulse 3a events without degradation, preserving sensor startup integrity after ignition cycling. |
| CAN FD Transceiver Interface | Infotainment USB-C Port |
|
Use Scenario: Protecting high-speed CAN FD physical layer against ESD and coupled transients on vehicle harnesses. IC Role / Device Role / Timing Role: Bi-directional clamp across CAN_H and CAN_L differential pair. Use Value: Symmetrical 70V standoff enables balanced clamping without skew, maintaining signal integrity up to 5Mbps. |
Use Scenario: Shielding USB-C power delivery circuitry from hot-plug ESD and battery backup surges. IC Role / Device Role / Timing Role: Secondary protection stage after common-mode choke, across VBUS and GND. Use Value: 30kV contact discharge rating prevents port lockup during service technician handling in dealership environments. |
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 |
|---|---|---|---|
| SMBJ70CA | No "Q" suffix; not AEC-Q101 qualified; RoHS-compliant but not PPAP-capable | Acceptable for non-safety-critical consumer or industrial designs; lacks automotive change control | Select when cost sensitivity outweighs automotive qualification requirements |
| SMCJ70CAQ | Larger SMC package; 1500W peak power; same 70V VRWM and AEC-Q101 qualification | Better suited for higher-energy surges (e.g., alternator load dump); requires larger PCB footprint | Choose when system-level testing shows >600W surge margin is insufficient |
Compared with SMBJ70CA and SMCJ70CAQ, SMBJ70CAQ-13-F uniquely balances AEC-Q101 compliance, SMB footprint constraints, and 600W surge capacity - making it optimal for space-constrained automotive modules where qualification and reliability are mandatory but energy levels remain within mid-tier surge profiles.
Availability
SMBJ70CAQ-13-F is available at Aetrix Electronics and suitable for body control modules, ADAS camera systems, and infotainment USB-C ports requiring stable component supply with full automotive traceability and lifecycle support.
Supply support for SMBJ70CAQ-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 for automotive, industrial, and computing markets.
This device belongs to the SMBJ(AQ) automotive TVS family, engineered specifically to meet stringent ISO7637-2 and ISO10605 requirements in vehicle electronic control units and sensor interfaces.
FAQ
What does the "C" and "Q" suffix indicate in SMBJ70CAQ-13-F?
The "C" denotes bi-directional configuration, enabling symmetrical clamping across both polarities. The "Q" signifies AEC-Q101 qualification, PPAP capability, and manufacture in IATF 16949-certified facilities - confirming suitability for automotive safety-critical applications.
Can SMBJ70CAQ-13-F be used in 48V mild-hybrid systems?
No - its 70V VRWM and 113V clamping voltage are designed for 12V/24V architectures. For 48V systems, Diodes recommends SMBJ100CAQ-13-F (100V VRWM) or SMCJ110CAQ to handle higher baseline voltages and associated transients.
Is the SMBJ70CAQ-13-F compatible with lead-free reflow profiles?
Yes - it features matte tin plating and is rated for soldering per MIL-STD-202, Method 208. Its SMB package supports standard JEDEC J-STD-020 profile with peak temperature up to 260°C and moisture sensitivity level 1, eliminating bake requirements.
How does SMBJ70CAQ-13-F differ from uni-directional SMBJ70AQ-13-F?
The bi-directional SMBJ70CAQ clamps equally on positive and negative transients, making it ideal for AC-coupled or differential lines like CAN. Uni-directional SMBJ70AQ only clamps negative excursions and requires correct polarity orientation - limiting use to DC-biased single-ended rails.
SMBJ70CAQ-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):
- 70V
- Voltage - Breakdown (Min):
- 77.8V
- Voltage - Clamping (Max) @ Ipp:
- 113V
- Current - Peak Pulse (10/1000µs):
- 5.3A
- 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
SMBJ70CAQ-13-F FAQ
1.How can I place an order for SMBJ70CAQ-13-F through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ70CAQ-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 SMBJ70CAQ-13-F reliable?
The price and inventory of SMBJ70CAQ-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 SMBJ70CAQ-13-F is usually 5 days.
3.What payment methods are accepted for SMBJ70CAQ-13-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ70CAQ-13-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ70CAQ-13-F?
SMBJ70CAQ-13-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ70CAQ-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 SMBJ70CAQ-13-F?
For technical support, including SMBJ70CAQ-13-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ70CAQ-13-F requirements.
6.How does Aetrix verify that SMBJ70CAQ-13-F is sourced from the original manufacturer or authorized distributors?
All SMBJ70CAQ-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 SMBJ70CAQ-13-F meets industry standards.
7.What is the process for return or replacement of SMBJ70CAQ-13-F?
All SMBJ70CAQ-13-F units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ70CAQ-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 SMBJ70CAQ-13-F part is unused and in its original packaging.
Return procedure for SMBJ70CAQ-13-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ70CAQ-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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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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