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Microchip Technology SMAJ17CE3/TR13
- Part No.:
- SMAJ17CE3/TR13
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAJ17CE3/TR13.pdf
- Description:
- TVS DIODE 17VWM 30.5VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:4,284
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Product details
Overview
SMAJ17CE3/TR13 from Microsemi is a bidirectional surface-mount transient voltage suppressor (TVS) designed for robust ESD, EFT, and secondary lightning surge protection in DC power rails and signal lines. It features a 17 V working standoff voltage (VWM), 18.9 V minimum breakdown voltage (VBR), 30.5 V clamping voltage (VC) at 16.4 A peak pulse current, and 500 W peak pulse power rating per 10/1000 µs waveform.
For engineers reviewing the SMAJ17CE3/TR13 datasheet, SMAJ17CE3/TR13 pinout, SMAJ17CE3/TR13 application, or SMAJ17CE3/TR13 equivalent, this device is evaluated for IEC61000-4-2 (±30 kV contact), IEC61000-4-4 (±4 kV), and IEC61000-4-5 (Class 4, 12 Ω source) compliance in industrial and automotive subsystems requiring fast-response, RoHS-compliant overvoltage protection.
Technical Context
The SMAJ17CE3/TR13 implements a silicon avalanche diode structure optimized for bidirectional clamping across both polarities, with sub-5 ns response time and <100 ps theoretical turn-on for unidirectional mode (not applicable here due to CA suffix). Its DO-214AC (SMA) package enables low-inductance PCB layout critical for high-frequency transient suppression.
It operates across –65 °C to +150 °C, supports 1.56 W steady-state dissipation at 25 °C ambient on FR4 with recommended footprint, and maintains ≤1 μA standby leakage at 17 V standoff-enabling low-power system integration without compromising protection integrity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 17 V - Maximum continuous reverse operating voltage before clamping begins; defines safe DC rail margin. |
| VBR min | 18.9 V @ 1 mA - Minimum avalanche onset threshold; ensures reliable triggering above nominal rail. |
| VC @ IPP | 30.5 V @ 16.4 A - Clamped voltage during 10/1000 µs surge; limits downstream IC stress to safe levels. |
| PPP | 500 W - Peak pulse power handling capacity; sustains high-energy transients without failure. |
| IPP | 16.4 A - Maximum non-destructive surge current under standard 10/1000 µs waveform. |
| ID @ VWM | ≤1 μA - Ultra-low leakage at rated standoff; prevents battery drain or signal distortion in always-on circuits. |
| Package | DO-214AC (SMA) - Industry-standard surface-mount outline with wide leads for thermal and mechanical reliability. |
Pinout & Package
DO-214AC (SMA) package: molded thermosetting epoxy body (UL94V-0), C-bend leads with matte-tin plating, cathode band omitted for bidirectional configuration (CA suffix), weight 0.064 g, moisture sensitivity level 1 (no dry pack required).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bidirectional avalanche junction | Identical clamping behavior for positive and negative transients; no polarity marking required. |
| Lead 1 / Lead 2 | Surge current path to ground or return rail | Low-inductance dual-terminal conduction path; requires symmetric PCB trace routing for balanced impedance. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity constraints. |
| IEC61000-4-5 Class 4 compliance | Validated for 12 Ω source impedance lightning surges up to 1 kV open-circuit, protecting against severe secondary effects. |
| RoHS-compliant "e3" finish | Matte-tin plating meets lead-free soldering requirements and eliminates tin whisker risk in long-life deployments. |
| 500 W peak pulse rating | Supports high-energy transients in 24 V industrial control buses and automotive power domains without derating. |
| –65 °C to +150 °C operation | Qualified for under-hood automotive, outdoor telecom, and aerospace environments with extreme thermal cycling. |
Applications
| Industrial PLC I/O Protection | Automotive Body Control Module |
|---|---|
Use Scenario: 24 V DC input/output channels in programmable logic controllers exposed to relay coil flyback and field wiring surges. IC Role / Device Role / Timing Role: Bidirectional TVS placed at connector entry point to clamp ±1 kV IEC61000-4-5 transients before reaching isolation amplifiers or microcontrollers. Use Value: Limits voltage seen by downstream analog front-end ICs to ≤30.5 V, preventing latch-up or gate oxide damage during repetitive switching events. | Use Scenario: LIN bus and sensor supply lines in body electronics subject to load dump and jump-start transients. IC Role / Device Role / Timing Role: Primary overvoltage clamp on 12 V sensor rails, coordinated with upstream fuse and downstream LDO to maintain fault containment. Use Value: Withstands 16.4 A surge current while maintaining <1 μA leakage-preserving battery life and enabling fail-safe diagnostics. |
| Telecom Power Feeds | Medical Diagnostic Equipment |
Use Scenario: -48 V DC power feeds in remote radio units and base station backhaul interfaces. IC Role / Device Role / Timing Role: Secondary protection stage after bulk MOVs, absorbing residual fast-rising transients from induced RF or lightning coupling. Use Value: Sub-5 ns response ensures clamping occurs before sensitive DC-DC converters experience overvoltage stress during multi-kV line surges. | Use Scenario: Patient-connected signal acquisition paths (ECG, EEG) requiring ultra-low leakage and biocompatible isolation. IC Role / Device Role / Timing Role: Bidirectional TVS on isolated analog inputs to suppress ESD from operator contact without injecting DC offset. Use Value: ≤1 μA standby current avoids baseline drift in high-gain instrumentation amplifiers; RoHS "e3" finish satisfies medical material restrictions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ17CA | No "e3" RoHS suffix; SnPb terminations; same electrical specs and DO-214AC package. | Not suitable for lead-free assembly; requires Pb-based reflow profile and violates EU RoHS Directive 2011/65/EU. | Select SMAJ17CE3/TR13 for new designs targeting RoHS compliance and modern SMT lines. |
| SMBJ17CA | Lower 600 W peak power rating; identical VWM, VBR, VC; SMB (DO-214AA) package with smaller footprint and higher thermal resistance. | Reduced surge margin in high-repetition-rate environments; less effective in high-temperature enclosures due to 100 °C/W junction-to-ambient. | Choose SMAJ17CE3/TR13 when 500 W rating and DO-214AC thermal performance are required for sustained surge duty cycles. |
Compared with SMAJ17CA and SMBJ17CA, the SMAJ17CE3/TR13 delivers certified RoHS compliance and superior thermal management in the DO-214AC package-making it the preferred choice for industrial and automotive applications demanding long-term reliability and regulatory alignment.
Availability
SMAJ17CE3/TR13 is available at Aetrix Electronics and suitable for industrial PLC I/O protection, automotive body control modules, and telecom power feed applications requiring stable component supply, full traceability, and lifecycle continuity.
Supply support for SMAJ17CE3/TR13 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
Microsemi (now part of Microchip Technology) is a U.S.-based semiconductor company specializing in high-reliability analog and mixed-signal components for aerospace, defense, and industrial markets.
The SMAJ series was engineered for ruggedized transient suppression in harsh environments-delivering consistent 500 W surge capability, extended temperature operation, and qualification to MIL-PRF-19500 where specified.
FAQ
What does the "CA" suffix indicate in SMAJ17CE3/TR13?
The "CA" suffix in SMAJ17CE3/TR13 denotes a bidirectional transient voltage suppressor configuration, meaning the device provides symmetrical clamping for both positive and negative voltage transients without polarity dependence. This eliminates the need for orientation during placement and simplifies design for AC-coupled or floating signal paths. The SMAJ17CE3/TR13 achieves this using a back-to-back avalanche diode structure within the DO-214AC package.
Is SMAJ17CE3/TR13 compliant with IEC61000-4-5 Class 4 testing?
Yes, SMAJ17CE3/TR13 is validated for IEC61000-4-5 Class 4 secondary lightning protection when tested with a 12 Ω source impedance, supporting up to 1 kV open-circuit surge voltage. Its 30.5 V clamping voltage at 16.4 A ensures downstream circuitry remains within safe operating limits during such events. This capability is explicitly confirmed in Microsemi's MSC0270A datasheet for the SMAJ5.0–170CA family.
What is the maximum steady-state power dissipation of SMAJ17CE3/TR13 at room temperature?
SMAJ17CE3/TR13 dissipates up to 1.56 W continuously at 25 °C ambient temperature when mounted on an FR4 PCB with 1 oz copper and the manufacturer-recommended pad layout. This value drops to 5 W only at a lead temperature (TL) of 75 °C, reflecting its thermal design for pulsed rather than continuous power handling. Exceeding these limits risks parametric shift or catastrophic failure.
Does SMAJ17CE3/TR13 require special handling for moisture sensitivity?
No-SMAJ17CE3/TR13 has a J-STD-020B moisture sensitivity level (MSL) of 1, meaning it is not moisture-sensitive and requires no dry pack or baking prior to reflow soldering. This simplifies manufacturing logistics and eliminates yield loss from popcorning during lead-free reflow profiles, making it ideal for high-volume automated assembly of industrial and automotive boards.
How does the "e3" suffix affect the termination finish of SMAJ17CE3/TR13?
The "e3" suffix on SMAJ17CE3/TR13 specifies a RoHS-compliant matte-tin plating on the C-bend leads, replacing traditional tin-lead finishes. This matte-tin layer meets JEDEC J-STD-020B solderability requirements, resists tin whisker formation, and supports lead-free reflow profiles up to 260 °C for 10 seconds-ensuring long-term reliability in safety-critical and export-regulated applications.
SMAJ17CE3/TR13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Package/Case:
- DO-214AC, SMA
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 17V
- Voltage - Breakdown (Min):
- 18.9V
- Voltage - Clamping (Max) @ Ipp:
- 30.5V
- Current - Peak Pulse (10/1000µs):
- 16.4A
- Power - Peak Pulse:
- 500W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
SMAJ17CE3/TR13 FAQ
1.How can I place an order for SMAJ17CE3/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAJ17CE3/TR13 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 SMAJ17CE3/TR13 reliable?
The price and inventory of SMAJ17CE3/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMAJ17CE3/TR13 is usually 5 days.
3.What payment methods are accepted for SMAJ17CE3/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ17CE3/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAJ17CE3/TR13?
SMAJ17CE3/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAJ17CE3/TR13 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 SMAJ17CE3/TR13?
For technical support, including SMAJ17CE3/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ17CE3/TR13 requirements.
6.How does Aetrix verify that SMAJ17CE3/TR13 is sourced from the original manufacturer or authorized distributors?
All SMAJ17CE3/TR13 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 SMAJ17CE3/TR13 meets industry standards.
7.What is the process for return or replacement of SMAJ17CE3/TR13?
All SMAJ17CE3/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ17CE3/TR13, 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 SMAJ17CE3/TR13 part is unused and in its original packaging.
Return procedure for SMAJ17CE3/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMAJ17CE3/TR13 Tags
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