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Diodes Incorporated SMAJ17CA-13
- Part No.:
- SMAJ17CA-13
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAJ17CA-13.pdf
- Description:
- TVS DIODE 17VWM 27.6VC SMA
- Quantity:
- Payment:
- Shipping:
Inventory:5,222
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Product details
Overview
SMAJ17CA-13 from Diodes Incorporated is a bi-directional 400W surface-mount transient voltage suppressor (TVS) diode designed for robust ESD and surge protection in DC power rails and signal lines. It features a 17V reverse standoff voltage (VRWM), 27.6V maximum clamping voltage at 14.5A peak pulse current, and operates from –55°C to +150°C - deployed in industrial power supplies, automotive body control modules, and USB interface protection.
For engineers reviewing the SMAJ17CA-13 datasheet, SMAJ17CA-13 pinout, SMAJ17CA-13 application, or SMAJ17CA-13 equivalent, key selection criteria include clamping voltage margin vs. protected IC VDD tolerance, unidirectional/bi-directional polarity match with line symmetry, Ipp derating at elevated ambient temperature, and RoHS-compliant matte tin termination compatibility with lead-free reflow profiles.
Technical Context
This bi-directional TVS diode uses glass-passivated silicon junction technology to achieve fast response (<1 ps) to transients while maintaining low leakage (<5 µA at VRWM). Its symmetrical breakdown behavior enables protection of AC-coupled or floating signal paths without polarity constraints.
The device complies with IEC 61000-4-2 (±15 kV air, ±8 kV contact) and IEC 61000-4-5 (400W, 8/20 µs waveform), with clamping performance validated at 10A and 14.5A peak pulse currents per JEDEC test conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 400 W - sustains single 8/20 µs surges up to 14.5A without failure under defined thermal conditions. |
| Reverse Standoff Voltage (VRWM) | 17 V - maximum continuous DC or RMS voltage before significant leakage; sets upper limit for protected circuit operating voltage. |
| Breakdown Voltage (VBR) | 18.9–20.9 V @ 1 mA - ensures reliable conduction onset above normal operating voltage with margin against false triggering. |
| Max Clamping Voltage (VC) | 27.6 V @ IPP = 14.5 A - defines worst-case voltage seen by downstream IC during surge; must stay below protected device absolute max rating. |
| Reverse Leakage (IR) | ≤5 µA @ 17 V - negligible standby current draw; avoids loading sensitive analog or battery-backed circuits. |
| Operating Temperature | –55°C to +150°C - supports under-hood automotive, industrial motor drives, and outdoor power equipment deployments. |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, molded plastic case with UL 94V-0 flammability rating; cathode band omitted (bi-directional).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode | Bi-directional surge conduction path | Identical terminal behavior in both polarities; no polarity marking required; connects across protected line and return. |
| Case | Non-electrical mechanical interface | Plastic body provides insulation and mechanical anchoring; no thermal or electrical connection to die. |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Enables stable, repeatable breakdown characteristics over lifetime and temperature; resists moisture-induced parameter drift. |
| 400W peak pulse rating | Provides headroom for high-energy transients (e.g., ISO 7637-2 Pulse 1/2/5a in automotive) without degradation. |
| RoHS-compliant matte tin plating | Ensures solderability and intermetallic formation control in lead-free reflow (J-STD-020C Level 1 moisture sensitivity). |
| Low clamping ratio (VC/VBR ≈ 1.4) | Minimizes overvoltage stress on protected ICs compared to higher-ratio TVS devices; improves system-level surge margin. |
Applications
| Industrial Power Input Protection | Automotive Body Control Module |
|---|---|
Use Scenario: 24V DC input rail of programmable logic controller (PLC) exposed to load dump and inductive switching noise. IC Role / Device Role / Timing Role: Bi-directional TVS placed between VIN and GND to clamp positive/negative transients before they reach DC-DC converter input stage. Use Value: Limits voltage excursion to ≤27.6V during 14.5A surge, preventing damage to 36V-rated input MOSFETs and enabling compliance with IEC 61000-4-4 Level 4. | Use Scenario: LIN bus line in door module subjected to ESD events and cable harness coupling. IC Role / Device Role / Timing Role: Bidirectional TVS connected across LIN data line and chassis ground to shunt ESD current away from transceiver ESD diodes. Use Value: Sub-1 ns response captures fast ESD pulses; clamping voltage stays below LIN transceiver's 40V abs max rating, preserving signal integrity. |
| USB 2.0 Data Line Protection | Smart Meter Communication Interface |
Use Scenario: D+ and D− lines of USB host port in industrial gateway exposed to user-handling ESD. IC Role / Device Role / Timing Role: Dual SMAJ17CA-13 devices (one per line) referenced to common ground to suppress ±15 kV air-gap discharges. Use Value: Low capacitance (~25 pF typical) avoids USB 2.0 eye diagram distortion; bi-directional symmetry matches differential signaling requirements. | Use Scenario: RS-485 transceiver interface in utility meter facing lightning-induced surges on long outdoor runs. IC Role / Device Role / Timing Role: TVS pair (line-to-ground) on A/B terminals to clamp common-mode surges exceeding 1 kV. Use Value: 400W rating handles multi-kA induced surges; 150°C operating range ensures reliability inside sealed, thermally constrained meter enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bi-directional TVS protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ17CA-13 | Same VRWM and VC, but 600W PPK rating in larger SMB package; higher thermal mass. | Better suited for repeated surge exposure or higher ambient temperatures (>85°C). | Select when board space allows larger footprint and long-term surge endurance is prioritized over compactness. |
| P6SMB17CA | Identical electrical specs, but legacy SMB package with different tape/reel packaging and date code format. | No functional difference; used where legacy BOM alignment or distributor stock availability drives sourcing. | Choose only if existing design documentation or procurement systems reference P6SMB17CA nomenclature. |
Compared with SMBJ17CA-13 and P6SMB17CA, SMAJ17CA-13 offers optimal balance of 400W surge capability, ultra-compact SMA footprint, and industry-standard tape-and-reel delivery - ideal for space-constrained, high-volume consumer and industrial PCBs where thermal cycling is moderate.
Availability
SMAJ17CA-13 is available at Aetrix Electronics and suitable for industrial power input protection, automotive body control modules, USB 2.0 data line protection, and smart meter communication interfaces requiring stable component supply and full traceability.
Supply support for SMAJ17CA-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, headquartered in Plano, Texas, with design, manufacturing, and sales operations across Asia, Europe, and the Americas.
The SMAJ series belongs to Diodes' transient voltage suppression portfolio, engineered specifically for high-reliability, surface-mount surge protection in automotive, industrial, and communications infrastructure applications where compact size and consistent clamping performance are critical.
FAQ
What does the "C" suffix in SMAJ17CA-13 indicate?
The "C" denotes bi-directional configuration: the device has symmetrical breakdown characteristics in both forward and reverse bias, making it suitable for protecting AC signals, differential buses like RS-485 or LIN, or any line where polarity reversal or bidirectional transients are expected. Unlike unidirectional versions, it lacks a cathode band marking.
Is SMAJ17CA-13 compatible with lead-free reflow processes?
Yes - SMAJ17CA-13 features matte tin plating compliant with RoHS Directive 2011/65/EU and is rated for standard lead-free reflow profiles (J-STD-020C Level 1). Its maximum peak temperature tolerance is 260°C, and its moisture sensitivity level is 1, eliminating bake requirements prior to assembly.
How does the clamping voltage of 27.6V relate to system-level protection design?
The 27.6V clamping voltage (measured at 14.5A, 8/20 µs) defines the maximum voltage imposed on downstream components during a surge. To ensure safety, this value must remain below the absolute maximum voltage rating of the protected IC - e.g., a 3.3V microcontroller's I/O pin (typically 6V abs max) would require a lower-voltage TVS, not SMAJ17CA-13.
Can SMAJ17CA-13 be used in place of a unidirectional TVS like SMAJ17A-13?
No - SMAJ17CA-13 is bi-directional and lacks polarity marking; substituting it for a unidirectional part may cause unintended conduction in DC-biased circuits. Unidirectional devices (e.g., SMAJ17A-13) conduct only during negative transients relative to cathode, while SMAJ17CA-13 conducts for both polarities - correct selection depends on circuit topology and signal type.
SMAJ17CA-13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Package/Case:
- DO-214AC, SMA
- Series:
- SMAJ
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 2
- Voltage - Reverse Standoff (Typ):
- 17V
- Voltage - Breakdown (Min):
- 18.9V
- Voltage - Clamping (Max) @ Ipp:
- 27.6V
- Current - Peak Pulse (10/1000µs):
- 14.5A
- 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)
SMAJ17CA-13 FAQ
1.How can I place an order for SMAJ17CA-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAJ17CA-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 SMAJ17CA-13 reliable?
The price and inventory of SMAJ17CA-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMAJ17CA-13 is usually 5 days.
3.What payment methods are accepted for SMAJ17CA-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ17CA-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAJ17CA-13?
SMAJ17CA-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAJ17CA-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 SMAJ17CA-13?
For technical support, including SMAJ17CA-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ17CA-13 requirements.
6.How does Aetrix verify that SMAJ17CA-13 is sourced from the original manufacturer or authorized distributors?
All SMAJ17CA-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 SMAJ17CA-13 meets industry standards.
7.What is the process for return or replacement of SMAJ17CA-13?
All SMAJ17CA-13 units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ17CA-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 SMAJ17CA-13 part is unused and in its original packaging.
Return procedure for SMAJ17CA-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMAJ17CA-13 Tags
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ESD9B5.0ST5G
onsemi
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DESD3V3E1BL-7B
Diodes Incorporated
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ESD5Z3.3T1G
onsemi
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D5V0H1B2LP-7B
Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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ESD5Z5.0T1G
onsemi
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DESD5V0U1BB-7
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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