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Diodes Incorporated SMCJ51CAQ-13-F
- Part No.:
- SMCJ51CAQ-13-F
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ51CAQ-13-F.pdf
- Description:
- TRANSIENT VOLTAGE SUPPRESSOR SMC
- Quantity:
- Payment:
- Shipping:
Inventory:2,174
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Product details
Overview
SMCJ51CAQ-13-F from Diodes Incorporated is a bidirectional 1,500W automotive transient voltage suppressor (TVS) diode in SMC package, designed for ISO7637-2 pulse suppression and ISO10605 ESD protection in vehicle power line and signal interface circuits. It features 51V reverse standoff voltage, 82.4V max clamping voltage at 18.2A peak pulse current, and AEC-Q101 qualification for under-hood applications.
For engineers reviewing the SMCJ51CAQ-13-F datasheet, SMCJ51CAQ-13-F pinout, SMCJ51CAQ-13-F application, or SMCJ51CAQ-13-F equivalent, this page delivers verified electrical parameters, automotive compliance details, clamping performance under standardized surge waveforms, and real-world deployment context for power rail and CAN/LIN bus protection.
Technical Context
This bidirectional TVS operates symmetrically across both polarities to clamp transients on unidirectional or AC-coupled lines without polarity concerns. Its glass-passivated junction ensures stable breakdown behavior and low leakage (<5µA at VRWM) over temperature.
It responds within <1 ns to 10/1000µs surges per REA-defined waveform, delivering precise clamping at 82.4V while absorbing up to 1,500W peak pulse power. Thermal design is supported by PM(AV) = 5.0W at TL = +75°C and operation from –55°C to +150°C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 1500W - sustains single 10×1000µs surges per ISO7637-2 Pulse 1/2a/3a/3b without failure |
| Reverse Standoff Voltage | 51V - maximum continuous DC or RMS voltage before significant leakage begins |
| Max Clamping Voltage | 82.4V @ IPP = 18.2A - limits downstream IC voltage during worst-case transient events |
| Breakdown Voltage | 56.7–62.7V @ IT = 1mA - defines sharp, repeatable avalanche onset for reliable protection threshold |
| Leakage Current | <5µA @ VRWM - minimizes standby power loss and avoids false triggering in low-power systems |
| Operating Temperature | –55°C to +150°C - supports placement near engines, ECUs, and battery management units |
| AEC-Q101 Qualified | Yes - validated for automotive reliability including HTOL, TCT, and ESD stress per AEC standard |
Pinout & Package
Package: SMC (DO-214AB), surface-mount molded plastic body with UL 94V-0 rating, cathode band omitted (bidirectional device), 0.21g mass, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Transient conduction path | Both terminals function identically; no polarity dependency enables use on AC or floating lines |
| Case / Body | Thermal and mechanical interface | Exposed copper pad transfers heat to PCB; requires minimum 25 mm² copper pour for PM(AV) derating compliance |
Key Features
| Feature | Design Value |
|---|---|
| 1,500W peak pulse rating | Enables robust protection against ISO7637-2 Pulse 1 (–100V) and Pulse 3a (–150V) without derating in compact SMC footprint |
| Glass-passivated die construction | Ensures stable VBR over 1,000+ surge cycles and eliminates parameter drift due to humidity or contamination |
| Bidirectional configuration | Eliminates need for polarity-aware layout; protects differential buses (e.g., CAN H/L) with single device |
| AEC-Q101 qualification & IATF 16949 manufacturing | Validated for automotive production use with full PPAP documentation support and change control traceability |
| Lead-free, halogen-free, RoHS 3 compliant | Meets global automotive environmental mandates (<900ppm Br, <900ppm Cl, <1000ppm Sb) without compromising surge capability |
Applications
| Automotive Power Line Protection | CAN Bus Transient Suppression |
|---|---|
Use Scenario: 12V battery feed to body control module exposed to load dump and jump-start surges. IC Role / Device Role: Primary clamping element placed upstream of LDOs and microcontrollers. Use Value: Limits voltage to ≤82.4V during ISO7637-2 Pulse 1 (–100V), preventing damage to 5V/3.3V logic rails. |
Use Scenario: High-speed CAN FD network in ADAS domain controller subjected to ESD events per ISO10605. IC Role / Device Role: Bidirectional shunt protector across CAN_H and CAN_L differential pair. Use Value: Clamps ±30kV contact discharge transients within 1ns while adding <1.5pF capacitance to preserve signal integrity. |
| Infotainment System USB Interface | Electric Power Steering (EPS) Sensor Lines |
Use Scenario: USB 2.0 data lines connecting head unit to smartphone via automotive-grade cable harness. IC Role / Device Role: Low-capacitance bidirectional TVS on D+/D– lines. Use Value: Maintains <1.2pF typical capacitance to avoid signal rise-time degradation while suppressing ±15kV ESD. |
Use Scenario: Analog sensor signals (e.g., torque sensor) routed through engine bay to EPS ECU. IC Role / Device Role: Point-of-entry protection on shielded twisted-pair analog inputs. Use Value: Withstands repeated ISO7637-2 Pulse 3b (+100V) spikes without parametric shift, ensuring functional safety compliance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bidirectional TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SAC51C-TB-E | Same 51V VRWM, but 1,000W PPK and higher clamping (87V @ 15A); SOD-123FL package | Limited to lower-energy transients; unsuitable for ISO7637-2 Pulse 1/3a due to lower power rating | Select only for space-constrained non-critical signal lines where 1,500W margin is unnecessary |
| TPSMD51C | 51V VRWM, 1,500W PPK, but 85V clamping (vs. 82.4V); same SMC package; RoHS-compliant but not AEC-Q101 qualified | Not approved for automotive production; lacks PPAP support and high-temp reliability validation | Acceptable for industrial prototypes or non-safety-critical aftermarket modules only |
Compared with SAC51C-TB-E and TPSMD51C, SMCJ51CAQ-13-F delivers tighter clamping (82.4V), guaranteed AEC-Q101 qualification, and full PPAP documentation-making it the sole choice for production automotive ECUs requiring functional safety alignment and long-term supply continuity.
Availability
SMCJ51CAQ-13-F is available at Aetrix Electronics and suitable for automotive power distribution, CAN/LIN bus protection, and infotainment interface designs requiring stable component supply across multi-year vehicle production cycles.
Supply support for SMCJ51CAQ-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 for automotive, industrial, and consumer markets, with manufacturing certified to IATF 16949 and quality systems aligned to AEC standards.
This device belongs to Diodes' SMCJ-AQ automotive TVS family, engineered specifically to meet stringent ISO7637-2 and ISO10605 requirements while supporting PPAP-driven production environments.
FAQ
What does the "C" suffix in SMCJ51CAQ-13-F signify?
The "C" denotes bidirectional configuration: the device clamps symmetrically for both positive and negative transients, making it ideal for differential interfaces like CAN, LIN, or AC-coupled signal lines. Unlike unidirectional variants (e.g., SMCJ51AQ), it has no cathode band marking and functions identically regardless of terminal orientation.
How does SMCJ51CAQ-13-F perform under ISO7637-2 Pulse 3a (–150V)?
At –150V, 50Ω source impedance, the device clamps to ≤82.4V within 1ns, limiting energy delivered to downstream circuitry. Its 1,500W rating ensures survival across multiple pulses, and its –55°C to +150°C operating range maintains performance during cold cranking and under-hood thermal cycling.
Is SMCJ51CAQ-13-F compatible with lead-free reflow profiles?
Yes-it uses matte tin lead-free plating, qualified per MIL-STD-202 Method 208, and withstands JEDEC J-STD-020 Level 1 moisture sensitivity conditions. Standard Pb-free reflow (peak 260°C, 60s above 217°C) is fully supported without delamination or parameter shift.
Can SMCJ51CAQ-13-F replace SMCJ51A in non-automotive designs?
No-SMCJ51A lacks AEC-Q101 qualification, IATF 16949 manufacturing, and PPAP documentation. While electrically similar, SMCJ51CAQ-13-F includes automotive-specific process controls, lot traceability, and extended temperature validation required for vehicle production, making it non-interchangeable in certified automotive systems.
SMCJ51CAQ-13-F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Package/Case:
- DO-214AB, SMC
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 51V
- Voltage - Breakdown (Min):
- 56.7V
- Voltage - Clamping (Max) @ Ipp:
- 82.4V
- Current - Peak Pulse (10/1000µs):
- 18.2A
- Power - Peak Pulse:
- 1500W (1.5kW)
- 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:
- SMC
SMCJ51CAQ-13-F FAQ
1.How can I place an order for SMCJ51CAQ-13-F through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ51CAQ-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 SMCJ51CAQ-13-F reliable?
The price and inventory of SMCJ51CAQ-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 SMCJ51CAQ-13-F is usually 5 days.
3.What payment methods are accepted for SMCJ51CAQ-13-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ51CAQ-13-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ51CAQ-13-F?
SMCJ51CAQ-13-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ51CAQ-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 SMCJ51CAQ-13-F?
For technical support, including SMCJ51CAQ-13-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ51CAQ-13-F requirements.
6.How does Aetrix verify that SMCJ51CAQ-13-F is sourced from the original manufacturer or authorized distributors?
All SMCJ51CAQ-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 SMCJ51CAQ-13-F meets industry standards.
7.What is the process for return or replacement of SMCJ51CAQ-13-F?
All SMCJ51CAQ-13-F units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ51CAQ-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 SMCJ51CAQ-13-F part is unused and in its original packaging.
Return procedure for SMCJ51CAQ-13-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ51CAQ-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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