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Microchip Technology SMAJ13CE3/TR13
- Part No.:
- SMAJ13CE3/TR13
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAJ13CE3/TR13.pdf
- Description:
- TVS DIODE 13VWM 23.8VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:7,722
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Product details
Overview
SMAJ13CE3/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 13 V reverse standoff voltage (VWM), 14.4 V minimum breakdown voltage (VBR), 23.8 V maximum clamping voltage (VC) at 21.0 A peak pulse current, and 500 W peak pulse power rating per 10/1000 µs waveform - deployed in industrial power supplies and automotive body control modules.
For engineers reviewing the SMAJ13CE3/TR13 datasheet, SMAJ13CE3/TR13 pinout, SMAJ13CE3/TR13 application, or SMAJ13CE3/TR13 equivalent, this device is evaluated for IEC61000-4-2 (±15 kV contact), IEC61000-4-4 (±2 kV fast transient), and IEC61000-4-5 (Class 4, 42 Ω source) compliance, with DO-214AC package compatibility and RoHS-compliant matte-tin plating.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, delivering sub-5 ns response time to clamp transients before sensitive downstream circuitry sustains damage. Its low clamping ratio (VC/VBR ≈ 1.65) and 1 μA max standby leakage at VWM ensure minimal impact on system quiescent power and signal integrity in always-on interfaces.
The device uses silicon avalanche junction technology housed in a void-free thermosetting epoxy case (UL94V-0), rated for -65°C to +150°C operation. Thermal resistance is 15°C/W junction-to-lead, enabling reliable power dissipation when mounted on FR4 with recommended footprint - critical for sustained surge events in automotive and industrial environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Reverse Standoff) | 13 V - Maximum continuous DC or RMS voltage the device blocks without clamping; sets operating margin for 12 V nominal systems. |
| VBR (Min Breakdown) | 14.4 V @ 1 mA - Confirmed avalanche initiation threshold; ensures predictable turn-on above normal operating voltage. |
| VC (Max Clamping) | 23.8 V @ 21.0 A (10/1000 µs) - Peak voltage seen by protected circuit during worst-case surge; defines safe overvoltage ceiling. |
| PPP (Peak Pulse Power) | 500 W - Sustained energy-handling capability per standard surge waveform; enables single-device protection for moderate-energy transients. |
| IPP (Peak Pulse Current) | 21.0 A - Maximum non-destructive surge current the device passes while clamping; determines survivability under IEC61000-4-5 Class 4. |
| ID (Standby Leakage) | 1 μA max @ 13 V - Negligible DC loading on supply rails; avoids battery drain or false triggering in low-power sensor nodes. |
| Package | DO-214AC (SMA) - Industry-standard surface-mount outline with 2.57–2.79 mm width (C dim); compatible with automated pick-and-place and reflow. |
Pinout & Package
DO-214AC (SMA) package: molded thermosetting epoxy case, void-free, UL94V-0 rated; C-bend (modified J-bend) leads with RoHS-compliant annealed matte-tin plating; cathode band omitted on bidirectional variants.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bidirectional terminal pair | Identical avalanche behavior in both directions; no polarity marking required; connects across protected line and ground or between differential lines. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional surge suppression | Enables single-device protection of AC-coupled or floating signal paths (e.g., RS-485, CAN, USB D+/D−) without polarity concerns. |
| IEC61000-4-5 Class 4 compliance (42 Ω source) | Validated for secondary lightning immunity up to 12 A surge current in 42 Ω source impedance configuration - meets automotive and industrial infrastructure requirements. |
| RoHS-compliant "e3" suffix | Meets EU Directive 2011/65/EU with annealed matte-tin plating; eliminates lead-based solder compatibility issues and supports Pb-free reflow profiles. |
| Moisture sensitivity Level 1 | No dry pack or baking required prior to assembly; reduces manufacturing overhead and eliminates moisture-induced popcorning risk during reflow. |
| Tape-and-reel packaging (TR13) | Supplied in 13-inch reels (2500 units/reel) per EIA-481-1-A; optimized for high-volume SMT production with consistent feeding and placement accuracy. |
Applications
| Industrial Power Input Protection | Automotive Body Control Module (BCM) |
|---|---|
Use Scenario: 12 V DC input rail in programmable logic controllers exposed to load dump and inductive switching transients. IC Role / Device Role / Timing Role: Primary clamping element placed between VIN and GND, shunting surges before they reach DC-DC converters and microcontrollers. Use Value: Limits transient voltage to ≤23.8 V, preventing latch-up or gate oxide damage in 3.3 V/5 V logic ICs powered from the same rail. |
Use Scenario: LIN bus transceiver interface subjected to ISO 7637-2 Pulse 1, 2a, and 5a transients in door module electronics. IC Role / Device Role / Timing Role: Bidirectional TVS connected across LIN line and chassis ground, absorbing negative and positive spikes simultaneously. Use Value: Maintains signal integrity below LIN physical layer thresholds (±40 V) while surviving 100+ surge events per IEC61000-4-5 Class 4 test plan. |
| RS-485 Data Line Protection | USB 2.0 Port ESD Protection |
Use Scenario: Half-duplex RS-485 transceivers in factory automation networks facing cable discharge events and ground potential differences. IC Role / Device Role / Timing Role: Placed differentially across A/B lines and common-mode to ground, suppressing common- and differential-mode transients. Use Value: Clamps ±23.8 V surges within <5 ns, preserving data eye opening and avoiding bit errors during 10 Mbps operation. |
Use Scenario: Upstream USB 2.0 ports on embedded host devices encountering ±15 kV contact ESD per IEC61000-4-2. IC Role / Device Role / Timing Role: Bidirectional TVS on D+ and D− lines referenced to ground, providing symmetrical ESD path without signal distortion. Use Value: Achieves pass/fail compliance with zero data corruption or port reset after 50 ESD strikes, due to low capacitance (<100 pF) and fast response. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ13CA-E3/5B (Vishay) | Identical VWM (13 V), VBR (14.4 V min), VC (23.8 V), and DO-214AC package; 1 μA ID; RoHS-compliant matte-tin plating. | Same IEC61000-4-2/4-4/4-5 compliance profile and thermal specs; validated in Vishay's automotive-grade AEC-Q200 test reports. | Drop-in replacement where Vishay qualification documentation is required; identical footprint and electrical behavior. |
| 1.5SMC13CA (ON Semiconductor) | Same VWM (13 V), VBR (14.4 V min), VC (23.8 V), and DO-214AB package; 1 μA ID; but rated for 1500 W peak power (10/1000 µs). | Higher PPP allows extended surge endurance in high-energy environments (e.g., railway traction control), but larger DO-214AB footprint requires PCB redesign. | Select when higher single-pulse energy margin is needed and layout revision is acceptable; not pin-compatible due to wider body (4.57 mm vs. 2.79 mm). |
Compared with SMAJ13CE3/TR13, SMAJ13CA-E3/5B offers identical electrical and mechanical specifications with alternate qualification evidence, while 1.5SMC13CA provides greater surge energy headroom at the cost of board space and layout change - making the former ideal for direct substitution and the latter for upgraded ruggedness.
Availability
SMAJ13CE3/TR13 is available at Aetrix Electronics and suitable for industrial power input protection, automotive body control modules, RS-485 data line hardening, USB 2.0 port ESD protection, and LIN bus interface surge suppression requiring stable component supply and long-term obsolescence management.
Supply support for SMAJ13CE3/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, mixed-signal, and radiation-hardened components for aerospace, defense, and industrial markets.
The SMAJ series was engineered specifically for surface-mount transient voltage suppression in harsh environments, emphasizing fast response, repeatable clamping, and robust thermal performance in compact DO-214AC packages.
FAQ
What is the clamping voltage of SMAJ13CE3/TR13 under a 10/1000 µs surge?
The SMAJ13CE3/TR13 has a maximum clamping voltage (VC) of 23.8 V when subjected to a 21.0 A peak pulse current with a 10/1000 µs waveform. This value is measured per industry-standard test conditions and defines the upper voltage limit imposed on protected circuitry during surge events - critical for ensuring downstream ICs remain within absolute maximum ratings.
Is SMAJ13CE3/TR13 unidirectional or bidirectional?
SMAJ13CE3/TR13 is a bidirectional transient voltage suppressor, indicated by the "C" suffix in its part number. It provides symmetrical avalanche conduction in both polarities, making it suitable for protecting AC-coupled signals, differential buses like RS-485 or CAN, and floating power domains where polarity reversal may occur - unlike unidirectional variants such as SMAJ13A.
Does SMAJ13CE3/TR13 comply with IEC61000-4-5 for lightning surge protection?
Yes, SMAJ13CE3/TR13 is rated for secondary lightning surge protection per IEC61000-4-5 with 42 Ω source impedance up to Class 4 (12 A test current), and with 12 Ω source impedance up to Class 2 (16 A). Its 500 W peak pulse power rating and 23.8 V clamping voltage enable compliance in these standardized test configurations without external circuit modification.
What does the "e3" and "TR13" suffix mean in SMAJ13CE3/TR13?
The "e3" suffix denotes RoHS-compliant construction with annealed matte-tin plating on the leads, meeting EU Directive 2011/65/EU. The "TR13" indicates tape-and-reel packaging in 13-inch reels containing 2500 units, conforming to EIA-481-1-A standards - enabling seamless integration into high-speed SMT assembly lines without manual handling or packaging conversion.
What is the operating temperature range for SMAJ13CE3/TR13?
SMAJ13CE3/TR13 is specified for continuous operation from -65°C to +150°C, covering extreme industrial and automotive under-hood environments. Its thermal resistance of 15°C/W junction-to-lead ensures effective heat transfer to the PCB when mounted using the recommended DO-214AC footprint - supporting reliability in sealed enclosures or high-ambient-temperature deployments.
SMAJ13CE3/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):
- 13V
- Voltage - Breakdown (Min):
- 14.4V
- Voltage - Clamping (Max) @ Ipp:
- 23.8V
- Current - Peak Pulse (10/1000µs):
- 21A
- 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)
SMAJ13CE3/TR13 FAQ
1.How can I place an order for SMAJ13CE3/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAJ13CE3/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 SMAJ13CE3/TR13 reliable?
The price and inventory of SMAJ13CE3/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMAJ13CE3/TR13 is usually 5 days.
3.What payment methods are accepted for SMAJ13CE3/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ13CE3/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAJ13CE3/TR13?
SMAJ13CE3/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAJ13CE3/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 SMAJ13CE3/TR13?
For technical support, including SMAJ13CE3/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ13CE3/TR13 requirements.
6.How does Aetrix verify that SMAJ13CE3/TR13 is sourced from the original manufacturer or authorized distributors?
All SMAJ13CE3/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 SMAJ13CE3/TR13 meets industry standards.
7.What is the process for return or replacement of SMAJ13CE3/TR13?
All SMAJ13CE3/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ13CE3/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 SMAJ13CE3/TR13 part is unused and in its original packaging.
Return procedure for SMAJ13CE3/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMAJ13CE3/TR13 Tags
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