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Microchip Technology SMAJ16CE3/TR13
- Part No.:
- SMAJ16CE3/TR13
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAJ16CE3/TR13.pdf
- Description:
- TVS DIODE 16VWM 28.8VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:8,775
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Product details
Overview
SMAJ16CE3/TR13 from Microsemi is a bidirectional surface-mount Transient Voltage Suppressor (TVS) in DO-214AC (SMA) package, rated for 500 W peak pulse power at 10/1000 µs, with 16 V reverse standoff voltage (VWM), 17.8 V minimum breakdown voltage (VBR), and 28.8 V maximum clamping voltage (VC) at 17.6 A peak pulse current - deployed for ESD/EFT protection in industrial I/O and telecom line interfaces.
For engineers reviewing the SMAJ16CE3/TR13 datasheet, SMAJ16CE3/TR13 pinout, SMAJ16CE3/TR13 application, or SMAJ16CE3/TR13 equivalent, this page delivers verified electrical parameters, IEC61000-4-2/4-4/4-5 compliance details, bidirectional clamping behavior, RoHS-compliant matte-tin terminations, and tape-and-reel packaging configuration per EIA-481-1-A.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, with <100 ps theoretical response time for unidirectional mode and <5 ns for bidirectional conduction - enabling suppression of fast-rising ESD transients (IEC61000-4-2 Level 4) and repetitive EFT bursts (IEC61000-4-4). Its clamping action begins at VBR ≥17.8 V and limits voltage to ≤28.8 V under 17.6 A 10/1000 µs surge.
Designed for secondary lightning protection per IEC61000-4-5 with 12 Ω source impedance, SMAJ16CE3/TR13 qualifies for Class 2 (up to 1 kV surge) and supports stable operation from –65 °C to +150 °C. Thermal resistance is 15 °C/W junction-to-lead when mounted on FR4 with recommended footprint.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 16 V - Maximum continuous reverse operating voltage before significant leakage; defines safe working range for 15 V nominal bus protection. |
| VBR min @ IBR | 17.8 V @ 1 mA - Minimum voltage at which device enters avalanche breakdown; ensures reliable triggering above system operating voltage. |
| VC @ IPP | 28.8 V @ 17.6 A - Clamped voltage during 10/1000 µs surge; limits downstream IC stress to sub-30 V level. |
| PPP | 500 W - Peak pulse power handling capability; sustains single high-energy transients without failure. |
| IPP | 17.6 A - Maximum non-repetitive surge current supported at VC; determines minimum series impedance required for coordination. |
| ID @ VWM | 1 µA - Reverse leakage current at 16 V; negligible loading on 15 V supply rails or signal lines. |
| Package | DO-214AC (SMA) - Industry-standard surface-mount outline with wide leads for thermal dissipation and low-inductance surge path. |
Pinout & Package
DO-214AC (SMA) package with bidirectional symmetry: two terminals, no polarity marking. Cathode band omitted per bidirectional construction; terminals are interchangeable for AC-coupled or differential line protection.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bidirectional avalanche junction | Provides identical clamping in both directions; enables use on AC signals, RS-485 buses, or ungrounded data lines without orientation concern. |
| Case / Body | Non-connected thermally conductive epoxy body | UL94V-0 rated void-free molding provides mechanical robustness and thermal path to PCB copper; no electrical connection. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables protection of balanced or floating interfaces (e.g., RS-485, CAN, Ethernet PHY) without polarity constraints or external diode pairing. |
| RoHS-compliant "e3" termination | Matte-tin plating per MIL-STD-750 Method 2026 ensures solderability and long-term reliability under thermal cycling and humidity exposure. |
| IEC61000-4-5 Class 2 rating (12 Ω source) | Validated for 1 kV surge immunity on secondary circuits - suitable for industrial control I/O modules and telecom line cards. |
| Tape-and-reel packaging (TR13) | 2500 units per 13-inch reel per EIA-481-1-A standard - optimized for automated SMT placement with consistent feed and tension control. |
| Moisture sensitivity Level 1 | No dry pack or baking required prior to reflow; simplifies manufacturing flow and reduces handling risk for high-volume assembly. |
Applications
| Industrial PLC Analog Input Protection | RS-485 Data Line Surge Suppression |
|---|---|
Use Scenario: Protecting 4–20 mA current-loop inputs in programmable logic controllers against induced surges from nearby motor switching or lightning coupling. IC Role / Device Role / Timing Role: Bidirectional TVS placed across input terminals to clamp common-mode transients before they reach precision ADC front-end or op-amp conditioning stage. Use Value: Limits transient voltage to ≤28.8 V, preventing latch-up or gate oxide damage in instrumentation-grade amplifiers while maintaining <1 µA standby leakage. |
Use Scenario: Securing half-duplex RS-485 transceivers in building automation networks exposed to ground potential differences and cable discharge events. IC Role / Device Role / Timing Role: Placed differentially between A/B lines and common-mode across A-GND/B-GND to suppress both differential and common-mode ESD/EFT pulses. Use Value: Symmetric 17.8 V breakdown and 28.8 V clamping ensure equal protection regardless of signal polarity - preserving signal integrity during 15 kV contact ESD per IEC61000-4-2. |
| Telecom DSL Line Interface Protection | Automotive Body Control Module (BCM) Sensor Inputs |
Use Scenario: Guarding ADSL/VDSL line drivers and receivers connected to outside plant wiring subject to induced surges and secondary lightning effects. IC Role / Device Role / Timing Role: Bidirectional TVS installed at line interface connector to shunt energy before reaching transformer-coupled PHY or integrated line driver IC. Use Value: 500 W peak power rating and 17.6 A IPP support coordination with upstream gas discharge tubes (GDTs) for full IEC61000-4-5 Class 2 compliance (1 kV, 12 Ω source). |
Use Scenario: Shielding 5 V sensor inputs (e.g., temperature, pressure) in BCMs from load dump transients and ISO 7637-2 pulse 1/2a/3a events. IC Role / Device Role / Timing Role: Mounted directly at connector entry point to clamp fast transients before reaching MCU GPIO or analog front-end. Use Value: –65 °C to +150 °C operating range and 15 °C/W junction-to-lead thermal resistance ensure reliability in under-hood environments with minimal PCB copper area. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ16CA-E3/5B (Vishay) | Identical VWM = 16 V, VBR min = 17.8 V, VC = 28.8 V @ 17.6 A; same DO-214AC package and RoHS "E3" suffix. | Same IEC61000-4-2/4-4/4-5 compliance profile; validated for identical industrial and telecom use cases. | Select when dual-sourcing is required; fully interchangeable in layout and schematic with no derating needed. |
| 1.5SMC16CA (ON Semiconductor) | Higher VC = 29.2 V @ 17.2 A; same VWM/VBR but 1.5 kW peak power rating in larger SMC package (DO-214AB). | Requires larger PCB footprint; better suited for higher-energy surge environments where 500 W margin is insufficient. | Choose only if system-level testing shows SMAJ16CE3/TR13 clamping margin is inadequate; not drop-in due to package size difference. |
Compared with SMAJ16CE3/TR13, SMAJ16CA-E3/5B offers identical electrical and mechanical specs for seamless second-source flexibility, while 1.5SMC16CA trades compact DO-214AC form factor for higher power handling in a larger SMC package - requiring layout revision and thermal reassessment.
Availability
SMAJ16CE3/TR13 is available at Aetrix Electronics and suitable for industrial PLC analog inputs, RS-485 data lines, telecom DSL interfaces, and automotive BCM sensor protection requiring stable component supply and RoHS-compliant tape-and-reel delivery.
Supply support for SMAJ16CE3/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, RF, and radiation-hardened components for aerospace, defense, and industrial markets.
The SMAJ series was engineered for cost-effective, high-speed transient suppression in space-constrained surface-mount applications - targeting industrial automation, telecom infrastructure, and automotive electronics where robust ESD/EFT immunity is mandatory.
FAQ
What does the "C" suffix in SMAJ16CE3/TR13 indicate?
The "C" suffix denotes bidirectional construction: SMAJ16CE3/TR13 features symmetrical avalanche breakdown in both polarities, enabling use on AC-coupled or differential signal lines without orientation dependency. This differs from unidirectional variants (e.g., SMAJ16A) that require correct cathode/anode placement relative to ground.
Is SMAJ16CE3/TR13 compliant with IEC61000-4-5 for lightning surge protection?
Yes, SMAJ16CE3/TR13 is certified for secondary lightning protection per IEC61000-4-5 with 12 Ω source impedance up to Class 2 (1 kV test level). Its 28.8 V clamping voltage at 17.6 A ensures downstream circuitry remains within safe operating limits during standardized surge waveforms.
What is the meaning of "TR13" in SMAJ16CE3/TR13?
"TR13" specifies tape-and-reel packaging: SMAJ16CE3/TR13 is supplied on a 13-inch reel containing 2500 units, conforming to EIA-481-1-A standards. This format supports high-speed automated pick-and-place assembly with precise component indexing and tension-controlled feeding.
Does SMAJ16CE3/TR13 require moisture-sensitive handling precautions?
No - SMAJ16CE3/TR13 has IPC/JEDEC J-STD-020B Moisture Sensitivity Level 1, meaning it may be stored indefinitely at ambient conditions without dry packing or baking prior to reflow soldering. This eliminates moisture-related popcorning risks and simplifies manufacturing logistics.
How does the "e3" suffix affect the termination finish of SMAJ16CE3/TR13?
The "e3" suffix indicates RoHS-compliant matte-tin plating on the C-bend leads of SMAJ16CE3/TR13, meeting MIL-STD-750 Method 2026 solderability requirements. This finish provides superior wetting, intermetallic formation control, and long-term corrosion resistance compared to legacy tin-lead finishes.
SMAJ16CE3/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):
- 16V
- Voltage - Breakdown (Min):
- 17.8V
- Voltage - Clamping (Max) @ Ipp:
- 28.8V
- Current - Peak Pulse (10/1000µs):
- 17.6A
- 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)
SMAJ16CE3/TR13 FAQ
1.How can I place an order for SMAJ16CE3/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAJ16CE3/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 SMAJ16CE3/TR13 reliable?
The price and inventory of SMAJ16CE3/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMAJ16CE3/TR13 is usually 5 days.
3.What payment methods are accepted for SMAJ16CE3/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ16CE3/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAJ16CE3/TR13?
SMAJ16CE3/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAJ16CE3/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 SMAJ16CE3/TR13?
For technical support, including SMAJ16CE3/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ16CE3/TR13 requirements.
6.How does Aetrix verify that SMAJ16CE3/TR13 is sourced from the original manufacturer or authorized distributors?
All SMAJ16CE3/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 SMAJ16CE3/TR13 meets industry standards.
7.What is the process for return or replacement of SMAJ16CE3/TR13?
All SMAJ16CE3/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ16CE3/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 SMAJ16CE3/TR13 part is unused and in its original packaging.
Return procedure for SMAJ16CE3/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMAJ16CE3/TR13 Tags
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