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Diodes Incorporated SMAJ10CA-13
- Part No.:
- SMAJ10CA-13
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAJ10CA-13.pdf
- Description:
- TVS DIODE 10VWM 17VC SMA
- Quantity:
- Payment:
- Shipping:
Inventory:7,761
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Product details
Overview
SMAJ10CA-13 from Diodes Incorporated is a bi-directional 400W surface-mount transient voltage suppressor (TVS) diode designed for primary overvoltage protection in DC power lines and signal interfaces. It features a 10V reverse standoff voltage (VRWM), 11.1–12.3V breakdown voltage (VBR) at 1mA, 17.0V maximum clamping voltage (VC) at 23.5A peak pulse current (IPP), and operates from –55°C to +150°C junction temperature.
For engineers reviewing the SMAJ10CA-13 datasheet, SMAJ10CA-13 pinout, SMAJ10CA-13 application, or SMAJ10CA-13 equivalent, key selection criteria include clamping performance under 8.3ms surge, bidirectional polarity tolerance, RoHS-compliant lead-free packaging, and compatibility with automated SMT assembly on 5000-piece tape-and-reel delivery.
Technical Context
This bi-directional TVS diode uses glass-passivated silicon junction technology to provide symmetrical clamping for both positive and negative transients without polarity dependency. Its 400W peak pulse power rating is specified for non-repetitive 8.3ms half-sine wave surges per JEDEC method, with derating above 25°C ambient.
The device achieves fast response time (<1ps) due to avalanche breakdown mechanism and maintains low leakage (<5µA at VRWM) while delivering stable clamping up to 17.0V at 23.5A IPP - critical for protecting downstream ICs such as USB PHYs, RS-485 transceivers, and microcontroller I/O pins.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 400W - sustains single 8.3ms surge without failure; enables robust protection against IEC 61000-4-5 Level 3/4 surges. |
| Reverse Standoff Voltage | 10V - maximum continuous DC or RMS voltage before significant leakage; sets operating margin for 9–10V nominal rails. |
| Breakdown Voltage | 11.1–12.3V @ 1mA - precise avalanche initiation range ensures predictable turn-on during overvoltage events. |
| Clamping Voltage | 17.0V @ 23.5A - limits voltage seen by protected circuit during full-rated surge; keeps downstream logic within safe VCC+0.5V margin. |
| Junction Temp Range | –55°C to +150°C - supports operation in automotive engine compartments and industrial motor drives. |
| Package | SMA (DO-214AC) - industry-standard surface-mount outline with 4.80–5.59mm body length and 2.01–2.30mm terminal spacing. |
Pinout & Package
SMAJ10CA-13 is housed in the SMA (DO-214AC) package: molded plastic case rated UL 94V-0, cathode band omitted (bi-directional), and terminals solderable per MIL-STD-202 Method 208. Weight: 0.064g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Transient conduction path | Bi-directional terminals conduct equally in either polarity - no orientation required during placement. |
| Case / Body | Thermal & mechanical interface | Plastic body provides electrical isolation and transfers heat to PCB copper; no thermal pad or exposed metal. |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated die | Ensures stable avalanche characteristics and long-term reliability under repeated surge stress. |
| 400W peak pulse rating | Supports protection against high-energy lightning-induced surges in telecom and industrial fieldbus lines. |
| RoHS-compliant matte tin finish | Enables lead-free reflow soldering without whisker risk or intermetallic degradation. |
| Low clamping ratio (VC/VRWM = 1.7) | Minimizes overvoltage overshoot relative to working voltage - critical for 3.3V/5V logic protection. |
Applications
| Industrial PLC I/O Protection | Automotive Body Control Module |
|---|---|
Use Scenario: Protects 24V digital input channels from inductive kickback and ESD in programmable logic controllers. IC Role / Device Role / Timing Role: Primary shunt clamp placed directly at connector entry point to divert surge energy before reaching optocoupler or MCU GPIO. Use Value: Clamps transients to ≤17.0V, preventing latch-up or gate oxide damage in downstream 3.3V/5V interface ICs. | Use Scenario: Shields LIN bus transceiver pins from load dump and jump-start surges in vehicle door modules. IC Role / Device Role / Timing Role: Bidirectional clamping element across LIN data line and ground, handling ±100V transients per ISO 7637-2 Pulse 5a. Use Value: Symmetrical response eliminates need for dual unidirectional devices - reduces BOM count and board space. |
| USB 2.0 Port ESD Protection | RS-485 Transceiver Interface |
Use Scenario: Safeguards D+/D− lines of upstream USB ports against human-body-model (HBM) and IEC 61000-4-2 contact discharge. IC Role / Device Role / Timing Role: Low-capacitance TVS placed adjacent to USB connector to limit ESD voltage before reaching PHY IC. Use Value: Sub-100pF junction capacitance avoids signal integrity degradation at 480Mbps full-speed operation. | Use Scenario: Guards differential A/B lines of industrial RS-485 nodes against cable-induced surges in factory automation networks. IC Role / Device Role / Timing Role: Common-mode clamp between A/B and ground, suppressing common-mode transients while preserving differential signaling. Use Value: 400W rating handles multi-kV surges from long cable runs without degradation after repeated events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ10CA-13 | Same electrical specs but SMB (DO-214AA) package - 3.5mm wider body, higher thermal mass, 600W peak power rating. | Better suited for higher-energy surges or elevated ambient temperatures where thermal dissipation matters. | Select when board layout allows larger footprint and system-level surge testing exceeds 400W requirements. |
| P6SMB10CA | Identical SMAJ10CA-13 specs but offered by STMicroelectronics; same DO-214AC package and RoHS compliance. | No functional difference - direct second-source option with identical qualification and test flow. | Choose for supply chain diversification without design revalidation or layout change. |
Compared with SMBJ10CA-13, SMAJ10CA-13 offers tighter board space usage and lower profile; versus P6SMB10CA, it provides identical performance with Diodes Inc.'s extended automotive qualification and traceable lot control for industrial OEMs.
Availability
SMAJ10CA-13 is available at Aetrix Electronics and suitable for industrial PLC I/O protection, automotive body control modules, USB 2.0 port hardening, and RS-485 transceiver interface designs requiring stable component supply across production lifecycles.
Supply support for SMAJ10CA-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 manufacturer of discrete semiconductors and analog ICs, specializing in high-reliability protection, power management, and signal integrity solutions for industrial, automotive, and computing markets.
SMAJ series TVS diodes belong to Diodes' transient suppression product line, engineered specifically for cost-effective, high-volume SMT protection of DC power rails and communication interfaces against ESD, EFT, and lightning surges.
FAQ
What is the meaning of the 'C' suffix in SMAJ10CA-13?
The 'C' denotes bi-directional configuration: the device clamps symmetrically for both positive- and negative-polarity transients without polarity marking. Unlike unidirectional versions (e.g., SMAJ10A-13), it has no cathode band and can be mounted in either orientation - essential for AC-coupled or differential signal lines like RS-485 or LIN bus.
Does SMAJ10CA-13 meet IEC 61000-4-2 and IEC 61000-4-5 standards?
SMAJ10CA-13 is not certified to IEC standards itself, but its 400W peak pulse rating and 17.0V clamping voltage at 23.5A make it suitable for designs targeting IEC 61000-4-2 Level 4 (15kV air/8kV contact) and IEC 61000-4-5 Combination Wave (1kV/2Ω, 2kV/12Ω) when properly laid out with low-inductance grounding. System-level validation remains required.
Can SMAJ10CA-13 replace a unidirectional TVS in a DC power rail?
Yes - but only if the application does not require strict polarity-dependent behavior. As a bi-directional device, SMAJ10CA-13 will clamp both overvoltage and reverse-voltage faults, which may be beneficial in systems prone to accidental reverse connection. However, its leakage current is slightly higher than unidirectional equivalents below VRWM, so verify compatibility with ultra-low-power standby modes.
What is the maximum recommended PCB trace inductance for optimal clamping performance?
For sub-17V clamping fidelity, total series inductance (including trace + via + pad) should be kept below 10nH. This typically requires short (<5mm), wide (≥0.5mm), direct traces from TVS terminals to protected node and ground plane, with dedicated thermal vias under the cathode/anode pads. Layout simulations confirm >20% clamping voltage increase occurs above 20nH inductance at 23.5A IPP.
SMAJ10CA-13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Package/Case:
- DO-214AC, SMA
- Series:
- SMAJ
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 2
- Voltage - Reverse Standoff (Typ):
- 10V
- Voltage - Breakdown (Min):
- 11.1V
- Voltage - Clamping (Max) @ Ipp:
- 17V
- Current - Peak Pulse (10/1000µs):
- 23.5A
- Power - Peak Pulse:
- 400W
- Power Line Protection:
- Yes
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMAJ)
SMAJ10CA-13 FAQ
1.How can I place an order for SMAJ10CA-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAJ10CA-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 SMAJ10CA-13 reliable?
The price and inventory of SMAJ10CA-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMAJ10CA-13 is usually 5 days.
3.What payment methods are accepted for SMAJ10CA-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ10CA-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAJ10CA-13?
SMAJ10CA-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAJ10CA-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 SMAJ10CA-13?
For technical support, including SMAJ10CA-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ10CA-13 requirements.
6.How does Aetrix verify that SMAJ10CA-13 is sourced from the original manufacturer or authorized distributors?
All SMAJ10CA-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 SMAJ10CA-13 meets industry standards.
7.What is the process for return or replacement of SMAJ10CA-13?
All SMAJ10CA-13 units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ10CA-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 SMAJ10CA-13 part is unused and in its original packaging.
Return procedure for SMAJ10CA-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMAJ10CA-13 Tags
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ESD9B5.0ST5G
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DESD3V3E1BL-7B
Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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