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Diodes Incorporated SMAJ36CAQ-13-F
- Part No.:
- SMAJ36CAQ-13-F
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAJ36CAQ-13-F.pdf
- Description:
- TVS DIODE 36VWM 58.1VC SMA
- Quantity:
- Payment:
- Shipping:
Inventory:15,895
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Product details
Overview
SMAJ36CAQ-13-F from Diodes Incorporated is a bi-directional 400W automotive transient voltage suppressor (TVS) diode with 36V reverse standoff voltage, 58.1V max clamping voltage at 6.9A peak pulse current, and AEC-Q101 qualification. It protects CAN bus, LIN, and body control modules against ISO7637-2 Pulse 1 (−100V), Pulse 2a (+50V), Pulse 3a (−150V), and ISO10605 ESD (±30kV).
For engineers reviewing the SMAJ36CAQ-13-F datasheet, SMAJ36CAQ-13-F pinout, SMAJ36CAQ-13-F application, or SMAJ36CAQ-13-F equivalent, this part supports high-reliability automotive power line protection where bidirectional surge immunity, low clamping ratio (1.61×VRWM), and IATF 16949 traceable manufacturing are required.
Technical Context
This bi-directional TVS operates symmetrically across both polarities, delivering 400W peak pulse power per IEC 61000-4-5 10/1000μs waveform and sustaining 40A non-repetitive forward surge (8.3ms half-sine). Its glass-passivated junction ensures stable breakdown at 40.0–44.2V with ≤0.5μA leakage at 36V.
Designed for under-hood and infotainment systems, it meets ISO7637-2 Pulse 3b (+100V) and complies with RoHS 3, halogen-free, and antimony-free "Green" requirements. Thermal operation spans −55°C to +175°C junction temperature with 1.0W steady-state dissipation at TL = +75°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 400W - withstands ISO7637-2 transients without failure |
| Reverse Standoff Voltage (VRWM) | 36V - blocks normal 12V/24V automotive supply ripple |
| Max Clamping Voltage (VC) | 58.1V @ 6.9A - limits downstream IC stress during 10×1000μs surge |
| Breakdown Voltage (VBR) | 40.0–44.2V @ 1.0mA - tight tolerance ensures predictable turn-on |
| Leakage Current (IR) | ≤0.5μA @ 36V - negligible standby power loss in always-on circuits |
| Operating Temperature | −55°C to +175°C - supports engine bay and transmission control unit placement |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, molded plastic UL 94V-0 housing, cathode band omitted (bi-directional device), 0.064g weight, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 1) | Surge current entry (negative polarity) | Accepts reverse transient energy during ISO7637-2 Pulse 1 (−100V) |
| Cathode (Pin 2) | Surge current entry (positive polarity) | Accepts forward transient energy during ISO7637-2 Pulse 2a (+50V) |
Key Features
| Feature | Design Value |
|---|---|
| Bi-directional clamping symmetry | Enables single-device protection of AC-coupled lines like CAN H/L without polarity concerns |
| AEC-Q101 qualification & PPAP capability | Validated for automotive production use with full change control and IATF 16949 traceability |
| Glass-passivated die construction | Ensures long-term reliability under thermal cycling and humidity exposure in harsh environments |
| RoHS 3 / Halogen-free / Antimony-free | Meets global automotive environmental compliance mandates (Br+Cl <1500ppm, Sb <1000ppm) |
Applications
| Automotive CAN Bus Protection | Body Control Module (BCM) Power Input |
|---|---|
Use Scenario: Protecting high-speed CAN FD transceivers from load dump and jump-start surges on vehicle wiring harnesses. IC Role / Device Role / Timing Role: Bi-directional TVS placed across VCC/GND near transceiver to clamp transients before they reach PHY pins. Use Value: Limits voltage excursion to 58.1V during 6.9A surge, preserving transceiver integrity while maintaining <0.5μA quiescent leakage. |
Use Scenario: Securing 12V input rail of BCM microcontroller and driver ICs against ISO7637-2 Pulse 3a (−150V) and Pulse 3b (+100V). IC Role / Device Role / Timing Role: Primary front-end surge suppression stage upstream of DC/DC converter and LDO regulators. Use Value: Absorbs 400W peak energy within 10×1000μs window, preventing brownout or latch-up in safety-critical lighting and door control logic. |
| Infotainment System USB Interface | Electric Power Steering (EPS) Sensor Supply |
Use Scenario: Shielding USB 2.0 data lines and VBUS from ESD events per ISO10605 (±30kV air/contact discharge). IC Role / Device Role / Timing Role: Low-capacitance bi-directional TVS bridging D+/D− and VBUS/GND to suppress fast-rising ESD pulses. Use Value: Clamps sub-nanosecond ESD transients with 58.1V ceiling, avoiding signal distortion while meeting USB eye diagram mask requirements. |
Use Scenario: Stabilizing 5V sensor supply in EPS torque and position sensing circuits exposed to alternator noise and ignition spikes. IC Role / Device Role / Timing Role: Secondary protection after primary LC filter, guarding analog front-end ADC reference and op-amp bias rails. Use Value: Maintains ≤0.5μA leakage at 36V VRWM to prevent drift in precision ratiometric measurements under continuous operation. |
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 |
|---|---|---|---|
| SMAJ36CA RLG | Same electrical specs; reel packaging differs (7" vs 13" tape), no AEC-Q101 documentation provided | Limited to non-automotive industrial use due to missing PPAP and IATF 16949 sourcing evidence | Select only if AEC-Q101 compliance is not required and cost optimization is prioritized over audit readiness |
| SMCJ36CA | Higher 1500W rating, DO-214AB package (larger footprint), 58.1V VC unchanged | Better suited for 48V mild-hybrid systems requiring higher surge margin; incompatible with SMA PCB layout | Choose when system-level surge testing exceeds 400W or board space allows larger SMC package |
Compared with SMAJ36CAQ-13-F, SMAJ36CA RLG lacks documented automotive qualification and traceability, while SMCJ36CA trades compactness for higher surge capacity-making the Q-grade part optimal for space-constrained AEC-Q101 production programs.
Availability
SMAJ36CAQ-13-F is available at Aetrix Electronics and suitable for automotive CAN bus protection, body control module power inputs, and infotainment USB interface designs requiring stable component supply with full AEC-Q101 compliance and IATF 16949 traceability.
Supply support for SMAJ36CAQ-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 manufacturer of discrete semiconductors and analog ICs, specializing in high-reliability components for automotive, industrial, and computing markets.
The SMAJ(C)AQ series targets automotive electronics requiring AEC-Q101 qualification, ISO7637-2/ISO10605 compliance, and green material specifications-designed specifically for front-end surge protection in ECUs, ADAS sensors, and infotainment gateways.
FAQ
What does the 'Q' suffix signify in SMAJ36CAQ-13-F?
The 'Q' denotes AEC-Q101 qualification, confirming that the device has passed stress tests including HTGB, TCT, and ESD per JESD22 standards. It also indicates PPAP capability and manufacture in IATF 16949-certified facilities-mandatory for Tier 1 automotive suppliers.
Is SMAJ36CAQ-13-F unidirectional or bidirectional?
SMAJ36CAQ-13-F is bi-directional, confirmed by the 'C' in its part number per Diodes' ordering guide. It provides symmetrical clamping for both positive and negative transients, eliminating need for polarity-aware placement on PCBs.
Can this TVS replace SMAJ36A in an existing design?
No-SMAJ36A is unidirectional and lacks AEC-Q101 qualification. Substituting SMAJ36CAQ-13-F requires verifying board layout compatibility (same SMA footprint) and confirming system-level surge test pass/fail thresholds align with its 58.1V clamping voltage.
What is the maximum allowable ambient temperature for continuous operation?
At TA = +25°C, the device delivers full 400W peak pulse power. Derating begins above +25°C per Figure 1: at +85°C ambient, peak pulse power drops to ~280W. Steady-state dissipation remains limited to 1.0W at lead temperature TL = +75°C.
SMAJ36CAQ-13-F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Package/Case:
- DO-214AC, SMA
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 36V
- Voltage - Breakdown (Min):
- 40V
- Voltage - Clamping (Max) @ Ipp:
- 58.1V
- Current - Peak Pulse (10/1000µs):
- 6.9A
- Power - Peak Pulse:
- 400W
- 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:
- SMA
SMAJ36CAQ-13-F FAQ
1.How can I place an order for SMAJ36CAQ-13-F through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAJ36CAQ-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 SMAJ36CAQ-13-F reliable?
The price and inventory of SMAJ36CAQ-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 SMAJ36CAQ-13-F is usually 5 days.
3.What payment methods are accepted for SMAJ36CAQ-13-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ36CAQ-13-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAJ36CAQ-13-F?
SMAJ36CAQ-13-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAJ36CAQ-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 SMAJ36CAQ-13-F?
For technical support, including SMAJ36CAQ-13-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ36CAQ-13-F requirements.
6.How does Aetrix verify that SMAJ36CAQ-13-F is sourced from the original manufacturer or authorized distributors?
All SMAJ36CAQ-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 SMAJ36CAQ-13-F meets industry standards.
7.What is the process for return or replacement of SMAJ36CAQ-13-F?
All SMAJ36CAQ-13-F units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ36CAQ-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 SMAJ36CAQ-13-F part is unused and in its original packaging.
Return procedure for SMAJ36CAQ-13-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMAJ36CAQ-13-F Tags
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ESD9B5.0ST5G
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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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Diodes Incorporated
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