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Diodes Incorporated SMCJ70CAQ-13-F
- Part No.:
- SMCJ70CAQ-13-F
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ70CAQ-13-F.pdf
- Description:
- TRANSIENT VOLTAGE SUPPRESSOR SMC
- Quantity:
- Payment:
- Shipping:
Inventory:8,272
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Product details
Overview
SMCJ70CAQ-13-F from Diodes Incorporated is a bidirectional 1500W automotive transient voltage suppressor (TVS) diode in SMC package, with 70V reverse standoff voltage (VRWM), 113V max clamping voltage at 13.3A peak pulse current, and AEC-Q101 qualification for ISO7637-2 Pulse 1/2a/3a/3b and ISO10605 ESD protection in vehicle power line interfaces.
For engineers reviewing the SMCJ70CAQ-13-F datasheet, SMCJ70CAQ-13-F pinout, SMCJ70CAQ-13-F application, or SMCJ70CAQ-13-F equivalent, this part delivers verified surge immunity for 12V/24V automotive subsystems including body control modules, infotainment power rails, and ADAS sensor interfaces where bidirectional clamping and IATF 16949 traceability are required.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector across DC power lines, responding to transients within <1 ps to limit overvoltage before downstream ICs sustain damage. Its glass-passivated junction ensures stable breakdown behavior under repeated surge stress.
Designed specifically for automotive environments, it meets ISO7637-2 Pulse 1 (–100V), Pulse 2a (+50V), Pulse 3a (–150V), and Pulse 3b (+100V), while sustaining 30kV air/contact ESD per ISO10605 with 150pF/330Ω network.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 1500W - sustains single 10×1000μs surges up to 13.3A without failure |
| Reverse Standoff Voltage (VRWM) | 70V - blocks normal 12V/24V system operation while remaining inactive |
| Max Clamping Voltage (VC) | 113V @ IPP = 13.3A - limits transient voltage to safe level for 40V-rated downstream regulators |
| Breakdown Voltage (VBR) | 77.8–86.0V @ IT = 1mA - defines precise conduction onset threshold with ±5% tolerance |
| Leakage Current (IR) | 5μA @ VRWM - negligible standby power loss in always-on vehicle modules |
| Operating Temperature | –55°C to +150°C - supports engine bay and under-hood placement without derating |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, molded plastic housing with UL 94V-0 rating, cathode band omitted due to bidirectional construction, 0.21g mass, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bidirectional transient path | Either terminal serves as clamping node - no polarity dependency for AC-coupled or dual-rail protection |
| Case / Body | Thermal conduction path | Direct thermal interface to PCB copper pour; enables 5W steady-state dissipation at TL = +75°C |
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 stability of VBR and leakage under thermal cycling and humidity exposure |
| 1500W peak pulse rating | Withstands worst-case ISO7637-2 Pulse 3a (–150V) on 12V systems without degradation |
| Lead-free, halogen-free, RoHS 3 compliant | Meets EU Directive 2015/863/EU with Br+Cl <1500ppm and Sb <1000ppm for green manufacturing |
Applications
| Body Control Module (BCM) Power Input | Infotainment System DC-DC Input |
|---|---|
Use Scenario: 12V battery feed to BCM microcontroller and CAN transceivers exposed to load dump and alternator ripple. IC Role / Device Role: Primary shunt clamp protecting LDOs, MCU VDD, and CAN PHY power pins. Use Value: Limits transients to ≤113V, preventing latch-up or gate oxide rupture in 40V-input PMICs and 5V logic rails. |
Use Scenario: 24V-to-5V/3.3V conversion stage in head unit power supply subjected to ISO7637-2 Pulse 2a (+50V). IC Role / Device Role: Front-end overvoltage suppression ahead of buck controller and input capacitors. Use Value: Absorbs 1500W surge energy without thermal runaway, preserving input capacitor lifetime and regulator stability. |
| Rear Camera Power Line (ADAS) | Electronic Power Steering (EPS) Sensor Interface |
Use Scenario: Unshielded coaxial power delivery to rear-view camera over long harnesses susceptible to coupled ESD and inductive spikes. IC Role / Device Role: Bidirectional clamping device on +12V and GND lines to suppress common-mode transients. Use Value: Symmetrical response eliminates need for dual unidirectional devices, reducing BOM count and PCB area by 50%. |
Use Scenario: 5V sensor supply rail feeding torque and position sensors in EPS motor control units exposed to PWM noise and relay switching. IC Role / Device Role: Low-leakage (5μA) transient limiter maintaining signal integrity during continuous operation. Use Value: Prevents false triggering of analog front-end comparators by holding rail voltage within ±5% of nominal during 100ns surges. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bidirectional TVS protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SAC70CQ-13-F | Same VRWM (70V), lower PPK (600W), smaller SOD-123FL package | Limited to low-energy ESD-only scenarios; insufficient for ISO7637-2 Pulse 1/3a | Select only for space-constrained non-load-dump applications like USB port protection |
| SMCJ70CA | Identical electrical specs but lacks AEC-Q101 qualification and PPAP documentation | Not approved for automotive production; restricted to industrial or prototype use | Choose only if automotive compliance is not required and cost is primary constraint |
Compared with SAC70CQ-13-F and SMCJ70CA, the SMCJ70CAQ-13-F uniquely combines 1500W surge capacity, bidirectional clamping, AEC-Q101 validation, and IATF 16949 traceability-making it the sole option qualified for safety-critical 12V/24V power line protection in production vehicles.
Availability
SMCJ70CAQ-13-F is available at Aetrix Electronics and suitable for automotive body electronics, ADAS camera modules, and infotainment power supplies requiring stable component supply across multi-year vehicle production cycles.
Supply support for SMCJ70CAQ-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 company specializing in discrete, analog, and mixed-signal solutions, with design, manufacturing, and test facilities certified to IATF 16949 and ISO 9001 standards.
This device belongs to the SMCJ(AQ) automotive TVS family, engineered specifically to meet stringent ISO7637-2 and ISO10605 requirements for robust, zero-defect surge protection in vehicle electronic control units.
FAQ
What does the "AQ" suffix signify in SMCJ70CAQ-13-F?
The "AQ" suffix denotes AEC-Q101 qualification, PPAP capability, and manufacture in IATF 16949-certified facilities. It confirms full automotive-grade process control, lot traceability, and reliability testing including HTOL, TCT, and ESD per AEC standards-not just standard commercial-grade screening.
Is SMCJ70CAQ-13-F unidirectional or bidirectional?
It is bidirectional, indicated by the "C" in the part number (SMCJ70CAQ-13-F). This enables symmetrical clamping on both polarities, eliminating polarity concerns in AC-coupled lines or differential bus protection-unlike unidirectional variants such as SMCJ70AQ-13-F.
Can this TVS diode replace SMCJ70A in an existing automotive design?
No-SMCJ70A lacks AEC-Q101 qualification, PPAP documentation, and IATF 16949 traceability. While electrically similar, SMCJ70CAQ-13-F undergoes additional automotive-specific stress testing and process controls required for OEM production release and long-term field reliability.
What is the maximum allowable PCB pad temperature during reflow soldering?
The SMC package supports lead-free reflow per JEDEC J-STD-020, with peak temperature up to 260°C for ≤30 seconds. The device's moisture sensitivity level is 1, so no baking is required prior to assembly-enabling direct placement into standard automotive SMT lines.
SMCJ70CAQ-13-F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Package/Case:
- DO-214AB, SMC
- Series:
- SMCJ
- 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):
- 13.3A
- Power - Peak Pulse:
- 1500W (1.5kW)
- 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:
- SMC
SMCJ70CAQ-13-F FAQ
1.How can I place an order for SMCJ70CAQ-13-F through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ70CAQ-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 SMCJ70CAQ-13-F reliable?
The price and inventory of SMCJ70CAQ-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 SMCJ70CAQ-13-F is usually 5 days.
3.What payment methods are accepted for SMCJ70CAQ-13-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ70CAQ-13-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ70CAQ-13-F?
SMCJ70CAQ-13-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ70CAQ-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 SMCJ70CAQ-13-F?
For technical support, including SMCJ70CAQ-13-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ70CAQ-13-F requirements.
6.How does Aetrix verify that SMCJ70CAQ-13-F is sourced from the original manufacturer or authorized distributors?
All SMCJ70CAQ-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 SMCJ70CAQ-13-F meets industry standards.
7.What is the process for return or replacement of SMCJ70CAQ-13-F?
All SMCJ70CAQ-13-F units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ70CAQ-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 SMCJ70CAQ-13-F part is unused and in its original packaging.
Return procedure for SMCJ70CAQ-13-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ70CAQ-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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