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Microchip Technology SMAJ110CE3/TR13
- Part No.:
- SMAJ110CE3/TR13
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAJ110CE3/TR13.pdf
- Description:
- TVS DIODE 110VWM 196VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:4,708
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Product details
Overview
SMAJ110CE3/TR13 from Microsemi is a bidirectional surface-mount transient voltage suppressor (TVS) diode designed for high-energy surge protection in DC power lines and signal interfaces. It features a 110 V reverse standoff voltage (VWM), 122 V minimum breakdown voltage (VBR), 196 V maximum clamping voltage (VC) at 17.7 A peak pulse current, and 500 W peak pulse power rating per 10/1000 µs waveform-used in industrial power supply input stages to protect downstream regulators and controllers.
For engineers reviewing the SMAJ110CE3/TR13 datasheet, SMAJ110CE3/TR13 pinout, SMAJ110CE3/TR13 application, or SMAJ110CE3/TR13 equivalent, key selection criteria include bidirectional clamping capability, IEC61000-4-5 secondary lightning compliance (Class 1 with 42 Ω source), RoHS-compliant matte-tin plating, DO-214AC package thermal performance (15 °C/W junction-to-lead), and tape-and-reel packaging (TR13 = 2500/reel).
Technical Context
This TVS operates as a voltage-clamped shunt protector: under normal bias it draws ≤2.6 µA standby current at 110 V, but conducts fully when transient voltage exceeds 122 V (measured at 1 mA IBR). Its <100 ps theoretical response time enables effective suppression of ESD (IEC61000-4-2) and EFT (IEC61000-4-4) events.
The bidirectional construction (denoted by "C" suffix) provides symmetrical clamping in both polarities without polarity dependence, making it suitable for AC-coupled or floating signal lines. Thermal resistance of 15 °C/W junction-to-lead ensures stable operation during repetitive surges when mounted on FR4 with recommended footprint.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Standoff) | 110 V - Maximum continuous DC or RMS voltage the device blocks without conduction |
| VBR (Min) | 122 V @ 1 mA - Guaranteed avalanche initiation threshold, defining turn-on precision |
| VC @ IPP | 196 V @ 17.7 A - Clamped voltage during 10/1000 µs surge, limiting stress on protected ICs |
| PPP | 500 W - Peak transient energy absorption capacity, enabling robust lightning surge handling |
| ID @ VWM | ≤2.6 µA - Low leakage ensures minimal power loss and no false triggering in high-impedance circuits |
| Package | DO-214AC (SMA) - Standardized surface-mount outline with wide leads for thermal dissipation and mechanical reliability |
| RoHS | e3 suffix - Matte-tin plating compliant with EU Directive 2011/65/EU, lead-free and halogen-free |
Pinout & Package
DO-214AC (SMA) package: molded thermosetting epoxy body (UL94V-0), void-free construction, C-bend (modified J-bend) leads with annealed matte-tin plating; cathode band omitted on bidirectional variants.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient return path (bidirectional) | Connects to line or signal being protected; conducts during positive or negative overvoltage |
| Cathode | Transient return path (bidirectional) | Connects to ground or reference; symmetric with anode due to bidirectional structure |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables protection of AC or floating nodes without polarity constraints or external diode pairing |
| 500 W peak pulse power | Supports IEC61000-4-5 Class 1 secondary lightning surges (42 Ω source) without degradation |
| 15 °C/W junction-to-lead RθJL | Allows sustained surge duty cycles when soldered to standard FR4 PCB with 1 oz copper |
| Moisture sensitivity Level 1 | Eliminates dry-pack requirement and floor-life limitations per IPC/JEDEC J-STD-020B |
| Tape-and-reel (TR13) | 2500 units per 13-inch reel compatible with automated SMT placement systems |
Applications
| Industrial Power Input Protection | RS-485/422 Data Line Protection |
|---|---|
Use Scenario: 24–48 V DC industrial power rail exposed to load dump, inductive switching, and nearby lightning-induced transients. IC Role / Device Role / Timing Role: Shunt TVS placed between power rail and chassis ground to clamp surges before they reach DC-DC converters and microcontrollers. Use Value: 196 V clamping voltage limits stress on 36 V-rated input stages of buck controllers, preventing latch-up or gate oxide damage. | Use Scenario: Long-haul RS-485 bus in factory automation, subject to ESD events and ground potential differences. IC Role / Device Role / Timing Role: Bidirectional TVS connected across differential pair (A–B) and to ground to suppress common-mode and differential-mode transients. Use Value: Symmetrical 122 V breakdown ensures equal clamping for both polarities, preserving signal integrity during ±8 kV contact ESD per IEC61000-4-2. |
| Telecom AC Adapter Output | Automotive Body Control Module (BCM) Interface |
Use Scenario: Secondary-side output of isolated AC/DC adapter powering sensitive logic in set-top boxes or VoIP phones. IC Role / Device Role / Timing Role: TVS placed at adapter output connector to absorb coupling transients from shared building wiring. Use Value: 500 W rating handles 10/1000 µs surges up to 17.7 A, exceeding IEC61000-4-5 Level 3 requirements for residential equipment. | Use Scenario: LIN or CAN physical layer interface in BCM exposed to battery transients and ESD during service. IC Role / Device Role / Timing Role: Bidirectional TVS on LIN bus line (single-wire) referenced to vehicle chassis ground. Use Value: 110 V standoff allows operation across full 9–16 V battery range while clamping 122 V transients to protect LIN transceivers rated for 13.2 V abs max. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ110CAHE3/A | Same electrical specs; "HE3/A" denotes high-reliability screening per MIL-PRF-19500 JANTX level | Required for aerospace/avionics where extended temperature cycling (-55°C to +125°C ×10) and HTRB validation are mandated | Select SMAJ110CAHE3/A only if qualification to MIL-PRF-19500 is contractually required; otherwise SMAJ110CE3/TR13 suffices for commercial/industrial use |
| SMBJ110CA | Same VWM/VC, but lower 600 W PPP rating and SMB (DO-214AA) package with higher RθJA (100 °C/W) | Preferred where board space is constrained and surge energy is limited to <600 W; less effective for repeated high-energy events | Choose SMBJ110CA only if footprint reduction is critical and thermal management supports its lower power derating; SMAJ110CE3/TR13 offers superior thermal performance in same layout |
Compared with SMAJ110CAHE3/A, the SMAJ110CE3/TR13 omits military screening but retains identical clamping behavior and RoHS compliance; versus SMBJ110CA, it delivers better thermal dissipation (15 vs. 100 °C/W) and proven 500 W surge endurance in industrial environments.
Availability
SMAJ110CE3/TR13 is available at Aetrix Electronics and suitable for industrial power input protection, RS-485 data line hardening, telecom AC adapter outputs, and automotive BCM interfaces requiring stable component supply and long-term obsolescence management.
Supply support for SMAJ110CE3/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 for robust, surface-mount transient suppression in harsh environments-emphasizing low clamping ratio, repeatable surge endurance, and compatibility with automated assembly processes.
FAQ
What does the "C" in SMAJ110CE3/TR13 indicate?
The "C" suffix denotes a bidirectional configuration: SMAJ110CE3/TR13 clamps transients equally in both polarities, unlike unidirectional variants (e.g., SMAJ110A). This eliminates polarity concerns in AC-coupled or floating circuits and matches the symmetrical breakdown behavior required for RS-485 or LIN bus protection. The device has no cathode marking, consistent with bidirectional TVS design.
Is SMAJ110CE3/TR13 compliant with IEC61000-4-5 for lightning surge protection?
Yes, SMAJ110CE3/TR13 meets IEC61000-4-5 Class 1 secondary lightning surge immunity when tested with a 42 Ω source impedance, supporting peak currents up to 17.7 A. Its 196 V clamping voltage ensures protected circuitry remains within safe operating limits during standardized 10/1000 µs surge waveforms-verified in Microsemi's characterization per MSC0270A Rev L.
What is the thermal resistance of SMAJ110CE3/TR13, and why does it matter?
SMAJ110CE3/TR13 has a junction-to-lead thermal resistance (RθJL) of 15 °C/W. This low value enables efficient heat transfer from the silicon die to the PCB copper through the wide DO-214AC leads, allowing the device to sustain repetitive 500 W surges without thermal runaway. It directly impacts reliability in applications with frequent transients, such as motor drive power inputs.
Can SMAJ110CE3/TR13 replace SMAJ110A in an existing design?
No-SMAJ110CE3/TR13 is bidirectional while SMAJ110A is unidirectional. Substituting them requires verifying circuit polarity: SMAJ110A conducts only during positive overvoltage (anode grounded), whereas SMAJ110CE3/TR13 conducts for both polarities. Using SMAJ110CE3/TR13 in place of SMAJ110A may cause unintended conduction in DC-biased lines, risking malfunction or damage.
What does "TR13" mean in SMAJ110CE3/TR13?
"TR13" indicates tape-and-reel packaging: SMAJ110CE3/TR13 is supplied on a 13-inch reel containing 2500 units, conforming to EIA-481-1-A standards. This format enables direct integration into automated SMT pick-and-place equipment, reducing manual handling and improving placement accuracy-critical for high-volume industrial manufacturing.
SMAJ110CE3/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):
- 110V
- Voltage - Breakdown (Min):
- 122V
- Voltage - Clamping (Max) @ Ipp:
- 196V
- Current - Peak Pulse (10/1000µs):
- 2.6A
- 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)
SMAJ110CE3/TR13 FAQ
1.How can I place an order for SMAJ110CE3/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAJ110CE3/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 SMAJ110CE3/TR13 reliable?
The price and inventory of SMAJ110CE3/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMAJ110CE3/TR13 is usually 5 days.
3.What payment methods are accepted for SMAJ110CE3/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ110CE3/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAJ110CE3/TR13?
SMAJ110CE3/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAJ110CE3/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 SMAJ110CE3/TR13?
For technical support, including SMAJ110CE3/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ110CE3/TR13 requirements.
6.How does Aetrix verify that SMAJ110CE3/TR13 is sourced from the original manufacturer or authorized distributors?
All SMAJ110CE3/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 SMAJ110CE3/TR13 meets industry standards.
7.What is the process for return or replacement of SMAJ110CE3/TR13?
All SMAJ110CE3/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ110CE3/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 SMAJ110CE3/TR13 part is unused and in its original packaging.
Return procedure for SMAJ110CE3/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMAJ110CE3/TR13 Tags
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onsemi
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DESD3V3E1BL-7B
Diodes Incorporated
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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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