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Diodes Incorporated 3.0SMCJ8.5AQ-13
- Part No.:
- 3.0SMCJ8.5AQ-13
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
3.0SMCJ8.5AQ-13.pdf
- Description:
- TRANSIENT VOLTAGE SUPPRESSOR SMC
- Quantity:
- Payment:
- Shipping:
Inventory:6,853
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Product details
Overview
3.0SMCJ8.5AQ-13 from Diodes Incorporated is a unidirectional 3000W surface-mount transient voltage suppressor (TVS) diode designed for primary-level overvoltage protection in automotive and industrial power rails. It features a 8.5V reverse standoff voltage (VRWM), 9.44–10.43V breakdown voltage (VBR) at 1.0mA test current, and clamps transients to ≤14.4V at 208.3A peak pulse current (IPP), making it suitable for 12V battery system surge suppression per ISO 7637-2.
For engineers reviewing the 3.0SMCJ8.5AQ-13 datasheet, 3.0SMCJ8.5AQ-13 pinout, 3.0SMCJ8.5AQ-13 application, or 3.0SMCJ8.5AQ-13 equivalent, this device delivers verified IEC-61000-4-2 ESD immunity (30kV air/30kV contact), AEC-Q101 qualification, and SMC package thermal performance up to +150°C junction temperature - critical for under-hood automotive electronics and industrial DC input stages.
Technical Context
This TVS operates as a clamping-type overvoltage protector: when transient voltage exceeds its breakdown threshold, it avalanches into low-impedance conduction, diverting surge current away from downstream circuitry while holding voltage across protected nodes below 14.4V. Its glass-passivated die ensures stable VBR tolerance and long-term reliability under repeated surge stress.
The device is unidirectional with cathode band marking, optimized for DC-biased lines such as automotive battery feeds, CAN bus power rails, and industrial 24V PLC inputs. It complies with JEDEC JESD22-A114 (HBM: 8kV), JESD22-C101 (CDM: 1kV), and meets IATF 16949 manufacturing requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 3000W - sustains 10×1000μs surges without failure; enables robust protection against ISO 7637-2 Pulse 5a/b load dump events. |
| Reverse Standoff Voltage | 8.5V - sets minimum operating voltage before clamping; matches nominal 12V systems with margin for ripple and cold-crank dips. |
| Breakdown Voltage | 9.44–10.43V @ 1.0mA - tight VBR window ensures predictable turn-on timing and avoids false triggering during normal operation. |
| Clamping Voltage | ≤14.4V @ 208.3A - limits voltage seen by downstream ICs (e.g., LIN transceivers, microcontrollers) during worst-case surge conditions. |
| Leakage Current | ≤25μA @ 8.5V - negligible standby power loss; compatible with always-on automotive modules requiring ultra-low quiescent current. |
| Operating Temperature | −55°C to +150°C - supports placement near engines, power converters, or motor drives where ambient heat exceeds 100°C. |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, molded plastic body with UL 94V-0 flammability rating; dimensions: 7.11mm × 6.22mm × 2.75mm (L × W × H); weight ≈0.21g; matte tin-plated leads solderable per MIL-STD-202, Method 208.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side connection point | Connected to ground or low-voltage reference; completes clamping path during positive transients on cathode side. |
| Cathode | High-side connection point | Connected to protected line (e.g., battery rail); avalanche conduction initiates here when voltage exceeds VBR. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive use including temperature cycling, humidity bias, and surge lifetime testing per stress test plan. |
| IEC-61000-4-2 ESD rating | 30kV air discharge / 30kV contact discharge - exceeds Level 4 immunity requirements for infotainment and body control modules. |
| Glass-passivated junction | Enhances long-term stability of VBR and leakage under thermal cycling and humidity exposure; reduces parameter drift over 15+ year service life. |
| Lead-free & RoHS 3 compliant | Meets EU Directive 2015/863/EU; <900ppm Br, <900ppm Cl, <1000ppm Sb - satisfies Tier 1 automotive supplier material declarations. |
Applications
| Automotive Battery Protection | Industrial 24V Input Stage |
|---|---|
|
Use Scenario: Protecting engine control units (ECUs) and body control modules (BCMs) from load dump transients on 12V battery rails per ISO 7637-2 Pulse 5a (35V/400ms). IC Role / Device Role: Primary clamping element placed directly at connector entry point, upstream of DC-DC converters and LDOs. Use Value: Limits clamped voltage to 14.4V, enabling use of 16V-rated input capacitors and eliminating need for secondary TVS cascading. |
Use Scenario: Safeguarding programmable logic controllers (PLCs) and industrial HMIs against induced surges on 24V auxiliary power inputs exposed to relay switching noise. IC Role / Device Role: Standalone transient suppressor mounted on PCB edge near terminal block, shunting energy to chassis ground. Use Value: Withstands 208.3A peak current, providing single-device protection without parallel TVS arrays or fusing compromises. |
| CAN Bus Power Line | Telematics Module Power Input |
|
Use Scenario: Securing isolated CAN transceiver power supplies (VCC_IO) against coupled transients from adjacent high-current circuits in vehicle gateways. IC Role / Device Role: Localized TVS on 5V or 3.3V regulator output, placed within 2mm of transceiver VCC pin. Use Value: Low 25μA leakage prevents regulator instability; fast response (<1ns) prevents bit errors during ESD events on nearby harnesses. |
Use Scenario: Shielding LTE/5G telematics modules from battery voltage spikes during jump-start or alternator regulation faults in connected car platforms. IC Role / Device Role: First-line protector on main 12V input, coordinated with upstream fuse and downstream π-filter for broadband suppression. Use Value: AEC-Q101 qualification ensures zero field failures under extended temperature/humidity stress, meeting OEM PPAP requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ8.5A | 200W peak power, SMA package, lower IPP (23.2A), same VRWM/VBR range | Not suitable for ISO 7637-2 Pulse 5; limited to IEC 61000-4-4/5 level 3 surges | Select only for cost-sensitive consumer-grade 12V accessories with no automotive qualification requirement. |
| SMCJ8.5A | Same 3000W rating and SMC package, but non-automotive grade (no AEC-Q101, no PPAP support) | Lacks change control documentation and IATF 16949 traceability; not accepted by Tier 1 automotive customers | Acceptable for industrial prototypes or non-safety-critical internal equipment where qualification is not mandated. |
Compared with SMAJ8.5A and SMCJ8.5A, the 3.0SMCJ8.5AQ-13 uniquely combines AEC-Q101 qualification, full ISO 7637-2 Pulse 5 capability, and production-ready PPAP documentation - making it the only drop-in solution for Tier 1 automotive power rail designs requiring zero-rework compliance.
Availability
3.0SMCJ8.5AQ-13 is available at Aetrix Electronics and suitable for automotive ECU protection, industrial 24V PLC input stages, and telematics module power conditioning requiring stable component supply across multi-year production cycles.
Supply support for 3.0SMCJ8.5AQ-13 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 centers in Asia, Europe, and the US, and manufacturing in IATF 16949-certified facilities.
The 3.0SMCJ series belongs to Diodes' automotive-grade TVS portfolio, engineered specifically for AEC-Q101 compliance and high-energy transient suppression in harsh-environment vehicle subsystems.
FAQ
What does the 'Q' suffix signify in 3.0SMCJ8.5AQ-13?
The 'Q' suffix indicates full AEC-Q101 qualification, including stress testing across temperature, humidity, mechanical shock, and surge lifetime. It also confirms production in IATF 16949-certified facilities with PPAP documentation support - mandatory for automotive Tier 1 suppliers.
Can 3.0SMCJ8.5AQ-13 be used in bidirectional signal lines like RS-485?
No - this is a unidirectional TVS with cathode band marking, intended only for DC-biased power rails. For bidirectional data lines, Diodes offers the 3.0SMCJ8.5CA variant (no 'Q', bi-directional), which lacks AEC-Q101 qualification and has different clamping symmetry.
How does its 14.4V clamping voltage affect downstream 12V-rated components?
The 14.4V clamping voltage is well below the absolute maximum rating (typically 16–20V) of most 12V-input DC-DC controllers and LDOs. When paired with proper PCB layout (short traces, low-inductance ground), it prevents latch-up and permanent damage during 10×1000μs transients.
Is moisture sensitivity level (MSL) information available for this part?
Yes - the 3.0SMCJ8.5AQ-13 is rated MSL Level 1 per J-STD-020, meaning it has unlimited floor life at ≤30°C/85% RH and requires no baking prior to reflow soldering, simplifying SMT assembly for high-volume automotive manufacturing.
3.0SMCJ8.5AQ-13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Package/Case:
- DO-214AB, SMC
- Series:
- 3.0SMCJ
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 8.5V
- Voltage - Breakdown (Min):
- 9.44V
- Voltage - Clamping (Max) @ Ipp:
- 14.4V
- Current - Peak Pulse (10/1000µs):
- 208.3A
- Power - Peak Pulse:
- 3000W (3kW)
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SMC
3.0SMCJ8.5AQ-13 FAQ
1.How can I place an order for 3.0SMCJ8.5AQ-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for 3.0SMCJ8.5AQ-13 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 3.0SMCJ8.5AQ-13 reliable?
The price and inventory of 3.0SMCJ8.5AQ-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 3.0SMCJ8.5AQ-13 is usually 5 days.
3.What payment methods are accepted for 3.0SMCJ8.5AQ-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 3.0SMCJ8.5AQ-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 3.0SMCJ8.5AQ-13?
3.0SMCJ8.5AQ-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 3.0SMCJ8.5AQ-13 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 3.0SMCJ8.5AQ-13?
For technical support, including 3.0SMCJ8.5AQ-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 3.0SMCJ8.5AQ-13 requirements.
6.How does Aetrix verify that 3.0SMCJ8.5AQ-13 is sourced from the original manufacturer or authorized distributors?
All 3.0SMCJ8.5AQ-13 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 3.0SMCJ8.5AQ-13 meets industry standards.
7.What is the process for return or replacement of 3.0SMCJ8.5AQ-13?
All 3.0SMCJ8.5AQ-13 units undergo pre-shipment inspection (PSI). If there is an issue with 3.0SMCJ8.5AQ-13, 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 3.0SMCJ8.5AQ-13 part is unused and in its original packaging.
Return procedure for 3.0SMCJ8.5AQ-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
3.0SMCJ8.5AQ-13 Tags
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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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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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