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Diodes Incorporated SMAJ58CAQ-13-F
- Part No.:
- SMAJ58CAQ-13-F
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAJ58CAQ-13-F.pdf
- Description:
- TVS DIODE 58VWM 93.6VC SMA
- Quantity:
- Payment:
- Shipping:
Inventory:5,000
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Product details
Overview
SMAJ58CAQ-13-F from Diodes Incorporated is a bi-directional automotive transient voltage suppressor (TVS) diode in SMA package, rated for 400W peak pulse power, 58V reverse standoff voltage (VRWM), and 93.6V max clamping voltage (VC) at 4.3A peak pulse current (IPP), designed to protect CAN, LIN, and sensor interfaces in engine control units against ISO7637-2 Pulse 1/2a/3a/3b and ISO10605 ESD surges.
For engineers reviewing the SMAJ58CAQ-13-F datasheet, SMAJ58CAQ-13-F pinout, SMAJ58CAQ-13-F application, or SMAJ58CAQ-13-F equivalent, this device delivers AEC-Q101 qualified surge protection with verified clamping performance, bi-directional symmetry, and IATF 16949 manufacturing traceability - critical for automotive power line and data line hardening.
Technical Context
This bi-directional TVS operates symmetrically across both polarities, with breakdown voltage (VBR) specified at 64.4–71.2V (min/max) under 1mA test current, enabling robust overvoltage clamping during negative- and positive-going transients such as ISO7637-2 Pulse 1 (−100V) and Pulse 3a (−150V). Its glass-passivated die construction ensures stable leakage and long-term reliability under thermal cycling.
Clamping is validated per 10×1000μs waveform (IEC 61000-4-5), delivering 93.6V VC at IPP = 4.3A. Reverse leakage (IR) is ≤0.5μA at VRWM = 58V, minimizing standby power loss in always-on automotive modules like body controllers and ADAS domain gateways.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 400W - sustains single 10×1000μs surges without failure in automotive load-dump or inductive switching events |
| Reverse Standoff Voltage (VRWM) | 58V - sets maximum continuous operating voltage before clamping initiates; matches 48V system nominal rails |
| Max Clamping Voltage (VC) | 93.6V @ IPP = 4.3A - limits downstream IC stress during ISO7637-2 Pulse 2a (+50V) and Pulse 3b (+100V) |
| Breakdown Voltage (VBR) | 64.4–71.2V @ IT = 1mA - defines precise turn-on threshold for symmetrical bi-directional clamping |
| Reverse Leakage (IR) | ≤0.5μA @ VRWM - ensures negligible quiescent current draw in battery-sensitive modules (e.g., telematics sleep mode) |
| Operating Temperature | −55°C to +175°C - supports under-hood placement in engine management and transmission control units |
Pinout & Package
Package: SMA (Surface-Mount Axial), molded plastic UL 94V-0, moisture sensitivity level 1, 0.064g weight. Cathode band omitted - bi-directional devices have no polarity marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bi-directional surge conduction path | Either terminal serves as anode or cathode depending on transient polarity; enables single-device protection of AC-coupled or differential lines |
| Case / Body | Thermal and mechanical interface | Exposed copper pad area provides primary heat dissipation path to PCB; requires minimum 25 mm² copper pour for PM(AV) = 1.0W derating |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified & PPAP capable | Validated for automotive production use with full change control, lot traceability, and IATF 16949 manufacturing |
| 400W peak pulse rating (10×1000μs) | Withstands high-energy transients from alternator load dump and motor actuator back-EMF without degradation |
| Bi-directional clamping symmetry | Enables protection of bidirectional data lines (e.g., CAN H/L, LIN bus) with identical VC in both directions |
| Low IR (≤0.5μA) at VRWM | Preserves battery life in always-on vehicle networks where leakage directly impacts parasitic drain |
| Halogen- and antimony-free "Green" construction | Meets automotive environmental compliance (Br+Cl <1500ppm, Sb <1000ppm) without sacrificing surge robustness |
Applications
| Engine Control Unit (ECU) Power Input | CAN FD Transceiver Protection |
|---|---|
Use Scenario: 12V/48V power rail input to ECU exposed to ISO7637-2 Pulse 1 (−100V) and Pulse 3a (−150V) during vehicle cranking and alternator regulation faults. IC Role / Device Role: Primary clamping element placed upstream of DC-DC converter input to limit transient voltage to safe levels. Use Value: 93.6V clamping ensures downstream regulator ICs (e.g., TPS543B20) remain within absolute maximum ratings during worst-case load dump. |
Use Scenario: CAN FD physical layer (e.g., TCAN1042H) connected to chassis-ground-referenced wiring harness subject to ESD contact discharge per ISO10605 (±30kV). IC Role / Device Role: Bi-directional TVS shunting fast-rising ESD pulses between CAN_H and CAN_L lines and ground. Use Value: Symmetrical VBR and VC ensure equal protection of both differential signal lines without skew or imbalance. |
| Body Control Module (BCM) Sensor Interface | ADAS Camera Power Line |
Use Scenario: 5V supply to analog sensors (e.g., temperature, pressure) in BCM subjected to repetitive low-energy transients from relay coil switching. IC Role / Device Role: Secondary surge suppression stage after primary LC filter, absorbing residual energy that passes filtering. Use Value: 4.3A IPP rating handles cumulative surge energy from multiple relay operations without parametric shift or wear-out. |
Use Scenario: 12V power feed to front-facing camera module mounted near bumper, exposed to road-induced ESD and cable coupling noise. IC Role / Device Role: First-line transient suppressor on camera power input, placed adjacent to connector to minimize inductance. Use Value: −55°C to +175°C operating range ensures reliable clamping performance during extreme ambient conditions (e.g., desert parking, cold soak). |
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 |
|---|---|---|---|
| SAC58C-13-F | Same VRWM (58V), lower PPK (300W), higher VC (98V @ IPP = 3.5A) | Limited to lower-energy transients; not recommended for ISO7637-2 Pulse 1/3a in high-risk zones | Select only if cost sensitivity outweighs surge margin requirements and layout allows tighter thermal management |
| SMCJ58CA | Higher PPK (1500W), larger SMC package (7.1mm × 6.2mm), same VRWM/VC specs | Requires more PCB area; suited for main battery inputs rather than space-constrained ECUs or sensors | Choose when system-level testing reveals insufficient margin with 400W rating or when legacy SMC footprint is fixed |
Compared with SAC58C-13-F, SMAJ58CAQ-13-F delivers 33% higher surge energy handling and tighter clamping; versus SMCJ58CA, it trades 75% smaller footprint for 73% lower peak power - optimizing for dense automotive PCBs where space and AEC-Q101 compliance are non-negotiable.
Availability
SMAJ58CAQ-13-F is available at Aetrix Electronics and suitable for engine control units, CAN FD transceiver protection circuits, and ADAS camera power conditioning requiring stable component supply, full automotive qualification, and RoHS-compliant green manufacturing.
Supply support for SMAJ58CAQ-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 centers in Asia, Europe, and the U.S., and manufacturing certified to IATF 16949 and ISO 9001 standards.
The SMAJ series is engineered specifically for automotive-grade transient suppression, targeting ISO7637-2 and ISO10605 compliance in safety-critical electronic control modules and sensor interfaces.
FAQ
Is SMAJ58CAQ-13-F unidirectional or bidirectional?
SMAJ58CAQ-13-F is a bi-directional TVS diode, indicated by the "C" suffix in the part number. It provides symmetrical clamping for both positive and negative transients without polarity dependence, making it ideal for protecting differential buses like CAN and LIN where voltage swings occur in both directions relative to ground.
What is the maximum clamping voltage and at what current is it measured?
The maximum clamping voltage (VC) is 93.6V, measured at a peak pulse current (IPP) of 4.3A using the standardized 10×1000μs double-exponential waveform per IEC 61000-4-5. This value is guaranteed across the full operating temperature range and represents the upper bound of voltage seen by protected circuitry during surge events.
Does SMAJ58CAQ-13-F meet AEC-Q101 requirements?
Yes - SMAJ58CAQ-13-F is fully AEC-Q101 qualified, manufactured in IATF 16949 certified facilities, and PPAP capable. Qualification includes stress tests for high-temperature operating life, temperature cycling, ESD (HBM/MM), and surge robustness per JESD22 and AEC standards, with full lot traceability and change control documentation.
How does the SMA package affect thermal performance in continuous operation?
In steady-state conditions, the SMA package limits PM(AV) to 1.0W at TL = +75°C. Effective thermal design requires ≥25 mm² of 2-oz copper connected to both terminals, with vias to inner layers. Derating begins above +25°C ambient, reaching ~0.5W at +100°C ambient - sufficient for intermittent surge duty but not for sustained power dissipation.
SMAJ58CAQ-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):
- 58V
- Voltage - Breakdown (Min):
- 64.4V
- Voltage - Clamping (Max) @ Ipp:
- 93.6V
- Current - Peak Pulse (10/1000µs):
- 4.3A
- 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
SMAJ58CAQ-13-F FAQ
1.How can I place an order for SMAJ58CAQ-13-F through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAJ58CAQ-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 SMAJ58CAQ-13-F reliable?
The price and inventory of SMAJ58CAQ-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 SMAJ58CAQ-13-F is usually 5 days.
3.What payment methods are accepted for SMAJ58CAQ-13-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ58CAQ-13-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAJ58CAQ-13-F?
SMAJ58CAQ-13-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAJ58CAQ-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 SMAJ58CAQ-13-F?
For technical support, including SMAJ58CAQ-13-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ58CAQ-13-F requirements.
6.How does Aetrix verify that SMAJ58CAQ-13-F is sourced from the original manufacturer or authorized distributors?
All SMAJ58CAQ-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 SMAJ58CAQ-13-F meets industry standards.
7.What is the process for return or replacement of SMAJ58CAQ-13-F?
All SMAJ58CAQ-13-F units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ58CAQ-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 SMAJ58CAQ-13-F part is unused and in its original packaging.
Return procedure for SMAJ58CAQ-13-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMAJ58CAQ-13-F Tags
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