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Diodes Incorporated SMCJ8.5CAQ-13-F
- Part No.:
- SMCJ8.5CAQ-13-F
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ8.5CAQ-13-F.pdf
- Description:
- TRANSIENT VOLTAGE SUPPRESSOR SMC
- Quantity:
- Payment:
- Shipping:
Inventory:7,666
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Product details
Overview
SMCJ8.5CAQ-13-F from Diodes Incorporated is a bidirectional 1,500W automotive transient voltage suppressor (TVS) in SMC package, with 8.5V reverse standoff voltage (VRWM), 9.44–10.4V breakdown voltage (VBR), and 14.4V max clamping voltage (VC) at 104.2A peak pulse current. It protects CAN bus, LIN, and body control modules against ISO7637-2 Pulse 1/2a/3a/3b and ISO10605 ESD surges.
For engineers reviewing the SMCJ8.5CAQ-13-F datasheet, SMCJ8.5CAQ-13-F pinout, SMCJ8.5CAQ-13-F application, or SMCJ8.5CAQ-13-F equivalent, this page delivers verified AEC-Q101 qualification status, clamping performance under 10×1000μs waveform, IATF 16949 manufacturing traceability, and bidirectional surge handling for 12V automotive power rail protection.
Technical Context
This bidirectional TVS diode operates across –55°C to +150°C junction temperature, with glass-passivated die construction ensuring stable leakage (<20µA at VRWM) and fast response time (<1.0ps). Its unidirectional counterpart uses cathode band polarity marking; bidirectional versions omit polarity indicators.
The device complies with ISO10605 (30kV air/contact discharge) and ISO7637-2 (Pulse 1: –100V; Pulse 2a: +50V; Pulse 3a: –150V; Pulse 3b: +100V), and is rated for 200A non-repetitive forward surge (8.3ms half-sine) with 5.0W steady-state power dissipation at TL = +75°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 1500W - sustains single high-energy transients per ISO7637-2 without failure |
| Reverse Standoff Voltage | 8.5V - defines maximum continuous DC operating voltage before clamping initiates |
| Breakdown Voltage | 9.44–10.4V @ 1.0mA - ensures reliable turn-on margin above VRWM for robust surge margin |
| Clamping Voltage | 14.4V @ 104.2A - limits downstream IC voltage during 10×1000μs surge to safe levels |
| Leakage Current | 20µA max @ 8.5V - minimizes standby power loss in always-on automotive circuits |
| Operating Temperature | –55°C to +150°C - supports under-hood placement in engine control units and ADAS sensors |
| AEC-Q101 Qualified | Yes - validated for automotive use with PPAP capability and IATF 16949 manufacturing |
Pinout & Package
Package: SMC (DO-214AB), molded plastic, UL 94V-0 rated, 0.21g weight, matte tin lead finish, moisture sensitivity level 1 (J-STD-020).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (Band End) | Anode terminal for unidirectional variant; unused polarity marker for bidirectional | Bidirectional version has no functional polarity - terminals are symmetric and interchangeable |
| Anode (Opposite Band) | Cathode terminal for unidirectional variant; unused polarity marker for bidirectional | No directional bias required - clamps equally on positive and negative transients |
Key Features
| Feature | Design Value |
|---|---|
| 1,500W peak pulse rating | Enables protection of 12V systems against severe load dump and inductive switching events |
| Glass-passivated die | Ensures long-term reliability and stable VBR/VC parameters across thermal cycling |
| Bidirectional configuration | Eliminates need for polarity-aware layout in differential buses like CAN FD and LIN |
| AEC-Q101 qualification | Validates suitability for safety-critical automotive ECUs without additional qualification effort |
| RoHS 3 & "Green" compliant | Meets <900ppm Br, <900ppm Cl, <1000ppm Sb - satisfies global automotive environmental mandates |
Applications
| Body Control Module (BCM) | CAN FD Transceiver Protection |
|---|---|
Use Scenario: Protects BCM power inputs and sensor interfaces from battery load dump and alternator ripple. IC Role / Device Role / Timing Role: Bidirectional TVS clamps both polarities of ISO7637-2 Pulse 1 (–100V) and Pulse 3b (+100V) surges. Use Value: Limits voltage to ≤14.4V during 104.2A transient, preventing damage to 16-bit microcontrollers and LIN transceivers. |
Use Scenario: Shields high-speed CAN FD data lines from ESD and coupled transients in vehicle networking. IC Role / Device Role / Timing Role: Clamps ±30kV ISO10605 contact discharge while maintaining signal integrity below 10pF capacitance. Use Value: Prevents latch-up in CAN transceivers without degrading 5Mbps bit timing due to low dynamic capacitance. |
| ADAS Camera Power Rail | Electric Power Steering (EPS) MCU Supply |
Use Scenario: Guards 12V input to image sensor SoCs and ISP processors in front/rear cameras. IC Role / Device Role / Timing Role: Absorbs ISO7637-2 Pulse 2a (+50V) induced by relay switching near camera harnesses. Use Value: Maintains clean 12V rail during transient events, avoiding image corruption or frame drop in real-time video streams. |
Use Scenario: Secures 5V/3.3V regulator inputs feeding EPS motor control MCUs subjected to steering column vibration-induced surges. IC Role / Device Role / Timing Role: Suppresses Pulse 3a (–150V) from inductive kickback in solenoid drivers and H-bridge gate drivers. Use Value: Ensures uninterrupted MCU operation during aggressive steering maneuvers, supporting ASIL-B functional safety requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bidirectional TVS protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SAC8.5CA | Same VRWM (8.5V), lower PPK (600W), higher VC (15.0V @ 40A) | Limited to lower-energy surges; unsuitable for ISO7637-2 Pulse 1/3a compliance | Select only for cost-sensitive non-automotive industrial applications with <600W surge exposure |
| SMBJ8.5CA | Same VRWM (8.5V), lower PPK (600W), same VC (14.4V @ 41.7A), SMB package | Reduced surge margin; SMB footprint lacks thermal mass for sustained 12V rail clamping | Acceptable for space-constrained sub-systems where full 1500W rating is not required |
Compared with SAC8.5CA and SMBJ8.5CA, SMCJ8.5CAQ-13-F delivers 2.5× higher peak power handling and AEC-Q101 validation-critical for automotive power rail protection where ISO7637-2 Pulse 1 (–100V) and Pulse 3a (–150V) must be suppressed without derating.
Availability
SMCJ8.5CAQ-13-F is available at Aetrix Electronics and suitable for automotive body electronics, ADAS camera modules, and electric power steering systems requiring stable component supply across extended production lifecycles.
Supply support for SMCJ8.5CAQ-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.
This part belongs to the SMCJ(AQ) automotive TVS family, engineered specifically for AEC-Q101-compliant transient suppression in 12V/24V vehicle electrical systems per ISO7637-2 and ISO10605.
FAQ
What does the 'C' in SMCJ8.5CAQ-13-F signify?
The 'C' suffix indicates a bidirectional configuration, meaning the device clamps voltage surges of either polarity symmetrically-unlike unidirectional variants that require correct anode/cathode orientation. This eliminates layout errors in differential signal paths such as CAN and LIN buses, and is confirmed in Diodes' DS40741 Rev. 8–2, Note 8.
Is SMCJ8.5CAQ-13-F qualified for automotive use?
Yes-it is AEC-Q101 qualified, PPAP capable, and manufactured in IATF 16949 certified facilities. Its qualification covers temperature cycling, humidity testing, and surge endurance per ISO7637-2, as stated in the product summary section of DS40741 Rev. 8–2 and Diodes' quality definitions portal.
How does its clamping voltage compare to similar 8.5V TVS diodes?
At 104.2A peak pulse current (10×1000μs waveform), SMCJ8.5CAQ-13-F clamps to 14.4V-lower than SMBJ8.5CA (14.4V @ 41.7A) and SAC8.5CA (15.0V @ 40A). This tighter clamping margin directly improves protection headroom for 12V rail ICs, as verified in the Electrical Characteristics table on page 3 of DS40741.
Can it replace SMCJ8.0CAQ-13-F in existing designs?
Yes, with design verification: SMCJ8.5CAQ-13-F has 0.5V higher VRWM and identical package/pinout, offering improved noise immunity on 12V rails. However, its slightly higher VBR (9.44–10.4V vs. 8.89–9.83V) requires confirming downstream overvoltage thresholds remain within spec during worst-case clamping.
SMCJ8.5CAQ-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):
- 8.5V
- Voltage - Breakdown (Min):
- 9.44V
- Voltage - Clamping (Max) @ Ipp:
- 14.4V
- Current - Peak Pulse (10/1000µs):
- 104.2A
- 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
SMCJ8.5CAQ-13-F FAQ
1.How can I place an order for SMCJ8.5CAQ-13-F through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ8.5CAQ-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 SMCJ8.5CAQ-13-F reliable?
The price and inventory of SMCJ8.5CAQ-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 SMCJ8.5CAQ-13-F is usually 5 days.
3.What payment methods are accepted for SMCJ8.5CAQ-13-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ8.5CAQ-13-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ8.5CAQ-13-F?
SMCJ8.5CAQ-13-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ8.5CAQ-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 SMCJ8.5CAQ-13-F?
For technical support, including SMCJ8.5CAQ-13-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ8.5CAQ-13-F requirements.
6.How does Aetrix verify that SMCJ8.5CAQ-13-F is sourced from the original manufacturer or authorized distributors?
All SMCJ8.5CAQ-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 SMCJ8.5CAQ-13-F meets industry standards.
7.What is the process for return or replacement of SMCJ8.5CAQ-13-F?
All SMCJ8.5CAQ-13-F units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ8.5CAQ-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 SMCJ8.5CAQ-13-F part is unused and in its original packaging.
Return procedure for SMCJ8.5CAQ-13-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ8.5CAQ-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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Diodes Incorporated
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Diodes Incorporated
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Nexperia USA Inc.
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Diodes Incorporated
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