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Microchip Technology SMAJ14CE3/TR13
- Part No.:
- SMAJ14CE3/TR13
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAJ14CE3/TR13.pdf
- Description:
- TVS DIODE 14VWM 25.8VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:5,639
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Product details
Overview
SMAJ14CE3/TR13 from Microsemi is a bidirectional surface-mount transient voltage suppressor (TVS) diode designed for robust ESD, EFT, and secondary lightning surge protection in DC power rails and signal lines. It features a 14 V reverse standoff voltage (VWM), 23.2 V maximum clamping voltage (VC) at 21.5 A peak pulse current (IPP), and 500 W peak pulse power rating per 10/1000 µs waveform - deployed in industrial motor drives, telecom power interfaces, and automotive body control modules.
For engineers reviewing the SMAJ14CE3/TR13 datasheet, SMAJ14CE3/TR13 pinout, SMAJ14CE3/TR13 application, or SMAJ14CE3/TR13 equivalent, key selection criteria include bidirectional clamping behavior, IEC61000-4-2/4-4/4-5 compliance, DO-214AC package thermal performance, and RoHS-compliant matte-tin plating for lead-free assembly.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, with breakdown voltage VBR ≥15.6 V at IBR = 1 mA and clamping voltage ≤23.2 V under 21.5 A 10/1000 µs surge. Its <100 ps theoretical response time enables effective suppression of fast ESD transients before sensitive downstream ICs are stressed.
The device uses a silicon avalanche junction structure housed in a void-free UL94V-0 epoxy case, with C-bend leads optimized for thermal dissipation (15 °C/W junction-to-lead) and solderability per MIL-STD-750 Method 2026. It supports 260 °C reflow for 10 s and exhibits ≤1 µA standby leakage at 14 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 14 V - Maximum continuous DC or RMS voltage the device blocks without conduction. |
| VBR min @ IBR | 15.6 V @ 1 mA - Ensures reliable turn-on above normal operating voltage to avoid false triggering. |
| VC @ IPP | 23.2 V @ 21.5 A - Limits transient voltage seen by protected circuitry during worst-case 10/1000 µs surge. |
| PPP | 500 W - Sustains high-energy surges common in industrial power bus and telecom line applications. |
| IPP | 21.5 A - Peak current capability aligned with IEC61000-4-5 Class 4 (12 Ω source) secondary lightning testing. |
| ID @ VWM | ≤1 µA - Negligible leakage ensures minimal impact on low-power sensor or battery-backed circuits. |
| Package | DO-214AC (SMA) - Standardized footprint compatible with automated SMT placement and reflow profiles. |
Pinout & Package
DO-214AC (SMA) surface-mount package with two terminals: cathode-marked end (band) for unidirectional variants; no polarity marking for bidirectional SMAJ14CE3/TR13. Void-free thermosetting epoxy case meets UL94V-0; C-bend leads with RoHS-compliant matte-tin plating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Surge return path (bidirectional) | Provides symmetrical low-impedance path to ground for positive and negative transients. |
| Cathode | Surge return path (bidirectional) | Functions identically to anode under reverse polarity; no functional distinction in CA devices. |
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 surge up to 1 kV open-circuit, critical for telecom and building automation interfaces. |
| RoHS-compliant "e3" finish | Matte-tin plating ensures compatibility with Pb-free reflow processes and eliminates lead-based contamination risk. |
| Moisture sensitivity Level 1 | No dry-pack or baking required prior to assembly - reduces manufacturing overhead and handling complexity. |
| 500 W peak pulse rating | Supports high-energy transients in 24 V/48 V industrial power distribution systems without derating. |
Applications
| Industrial Motor Drives | Telecom Power Interfaces |
|---|---|
Use Scenario: Protection of gate drivers and feedback sensors against switching-induced voltage spikes in 3-phase inverters. IC Role / Device Role / Timing Role: Bidirectional TVS placed across DC bus rails and isolated signal lines to clamp fast-rising transients before they reach PWM controllers or ADC inputs. Use Value: Prevents latch-up or permanent damage to microcontrollers and isolated gate drivers during IGBT commutation events. |
Use Scenario: Surge protection on -48 V DC power feeds and RS-485 data lines in central office equipment. IC Role / Device Role / Timing Role: Primary front-end TVS on power entry and communication ports to absorb IEC61000-4-5 Class 3/4 surges before upstream regulators or transceivers. Use Value: Maintains system uptime by preventing field failures caused by induced lightning surges on long copper runs. |
| Automotive Body Control Modules | Medical Diagnostic Equipment |
Use Scenario: Protection of LIN bus transceivers and LED driver ICs against load dump and jump-start transients. IC Role / Device Role / Timing Role: Bidirectional clamping device installed at connector interface to shunt energy directly to chassis ground. Use Value: Meets ISO 7637-2 Pulse 1/2a/3a immunity requirements without requiring additional series impedance or filtering. |
Use Scenario: ESD protection on patient-connected analog front-end inputs (ECG, EEG) and USB service ports. IC Role / Device Role / Timing Role: Low-leakage (<1 µA) TVS placed immediately at connector to prevent charge injection into precision amplifiers. Use Value: Preserves signal integrity and diagnostic accuracy by limiting ESD-induced offset drift and baseline noise. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ14CA-E3/5B (Vishay) | Identical VWM (14 V), VC = 23.2 V @ 21.5 A, DO-214AC package, RoHS-compliant matte-tin plating. | No functional difference; validated for same IEC61000-4-2/4-4/4-5 test levels and mounting conditions. | Drop-in replacement with identical thermal and electrical performance; preferred where Vishay supply chain alignment is required. |
| 1.5SMC14CA (ON Semiconductor) | Same VWM and VC, but rated for 1500 W peak pulse power (10/1000 µs); larger SMC (DO-214AB) package with higher thermal mass. | Higher surge margin suits harsher environments (e.g., outdoor base stations), but requires PCB layout change due to larger footprint. | Select when system-level surge testing exceeds 500 W requirements or when extended thermal cycling life is mandated. |
Compared with SMAJ14CE3/TR13, SMAJ14CA-E3/5B offers identical protection performance and drop-in compatibility, while 1.5SMC14CA provides higher surge headroom at the cost of board space and thermal design adjustments.
Availability
SMAJ14CE3/TR13 is available at Aetrix Electronics and suitable for industrial motor drives, telecom power interfaces, and automotive body control modules requiring stable component supply and full traceability through production lifecycles.
Supply support for SMAJ14CE3/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 developed specifically for surface-mount transient suppression in space-constrained, high-surge environments - emphasizing fast response, repeatable clamping, and robust thermal performance in DO-214AC packaging.
FAQ
What does the "CA" suffix indicate in SMAJ14CE3/TR13?
The "CA" suffix in SMAJ14CE3/TR13 denotes a bidirectional configuration, meaning the device clamps transients of either polarity symmetrically across its terminals. Unlike unidirectional variants (e.g., SMAJ14A), SMAJ14CE3/TR13 has no cathode band marking and provides equal VBR and VC characteristics in both directions - essential for protecting AC-coupled or floating signal paths without polarity concerns.
Is SMAJ14CE3/TR13 compliant with IEC61000-4-5 for lightning surge protection?
Yes, SMAJ14CE3/TR13 is validated for IEC61000-4-5 secondary lightning surge immunity: it meets Class 4 (12 Ω source impedance) up to 1 kV open-circuit voltage and Class 1 (42 Ω source) up to 1 kV, per Microsemi's published test data. Its 23.2 V clamping voltage at 21.5 A ensures protected circuits remain within safe operating limits during standardized surge waveforms.
What is the maximum steady-state power dissipation for SMAJ14CE3/TR13?
SMAJ14CE3/TR13 dissipates up to 1.56 W at 25 °C ambient temperature when mounted on a standard FR4 PCB with 1 oz copper and the recommended footprint. At lead temperature (TL) of 75 °C, its steady-state rating increases to 5 W - reflecting its low thermal resistance (15 °C/W junction-to-lead) and suitability for thermally demanding board layouts.
Does SMAJ14CE3/TR13 require moisture-sensitive handling?
No, SMAJ14CE3/TR13 is rated Moisture Sensitivity Level 1 per IPC/JEDEC J-STD-020B, meaning it can be stored indefinitely at ambient conditions without dry packing or baking. This eliminates moisture-related popcorning risks during reflow and simplifies inventory management for high-mix manufacturing environments.
What is the clamping voltage of SMAJ14CE3/TR13 under a 10/1000 µs surge?
The maximum clamping voltage (VC) of SMAJ14CE3/TR13 is 23.2 V when subjected to a 10/1000 µs exponential surge waveform at 21.5 A peak pulse current (IPP). This value is guaranteed per Microsemi's datasheet and defines the upper voltage limit imposed on protected circuitry during standardized transient events.
SMAJ14CE3/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):
- 14V
- Voltage - Breakdown (Min):
- 15.6V
- Voltage - Clamping (Max) @ Ipp:
- 25.8V
- Current - Peak Pulse (10/1000µs):
- 19.4A
- 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)
SMAJ14CE3/TR13 FAQ
1.How can I place an order for SMAJ14CE3/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAJ14CE3/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 SMAJ14CE3/TR13 reliable?
The price and inventory of SMAJ14CE3/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMAJ14CE3/TR13 is usually 5 days.
3.What payment methods are accepted for SMAJ14CE3/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ14CE3/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAJ14CE3/TR13?
SMAJ14CE3/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAJ14CE3/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 SMAJ14CE3/TR13?
For technical support, including SMAJ14CE3/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ14CE3/TR13 requirements.
6.How does Aetrix verify that SMAJ14CE3/TR13 is sourced from the original manufacturer or authorized distributors?
All SMAJ14CE3/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 SMAJ14CE3/TR13 meets industry standards.
7.What is the process for return or replacement of SMAJ14CE3/TR13?
All SMAJ14CE3/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ14CE3/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 SMAJ14CE3/TR13 part is unused and in its original packaging.
Return procedure for SMAJ14CE3/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMAJ14CE3/TR13 Tags
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