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Microchip Technology SMAJ110AE3/TR13
- Part No.:
- SMAJ110AE3/TR13
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAJ110AE3/TR13.pdf
- Description:
- TVS DIODE 110VWM 177VC DO214AC
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
SMAJ110AE3/TR13 from Microsemi is a unidirectional surface-mount transient voltage suppressor (TVS) designed for primary and secondary lightning surge protection in DC power rails and signal lines. It features a 110 V standoff voltage (VWM), 122 V minimum breakdown voltage (VBR), clamps to ≤196 V at 5.2 A peak pulse current (IPP), and delivers 500 W peak pulse power (10/1000 µs). It is used in industrial power supplies, telecom interface circuits, and automotive body control modules requiring IEC61000-4-5 Class 2 compliance with 42 Ω source impedance.
For engineers reviewing the SMAJ110AE3/TR13 datasheet, SMAJ110AE3/TR13 pinout, SMAJ110AE3/TR13 application, or SMAJ110AE3/TR13 equivalent, key selection criteria include clamping voltage margin relative to protected IC's absolute maximum rating, standoff voltage alignment with nominal rail voltage (e.g., 96–110 V DC systems), thermal derating on FR4 PCBs, and RoHS-compliant matte-tin termination compatibility with lead-free reflow profiles.
Technical Context
This TVS operates as a unidirectional avalanche diode with cathode-band polarity marking, optimized for fast response (<100 ps theoretical turn-on) to ESD (IEC61000-4-2), EFT (IEC61000-4-4), and induced surges. Its DO-214AC (SMA) package provides low thermal resistance (15 °C/W junction-to-lead) and supports 5 W steady-state dissipation at 75 °C lead temperature.
It is rated for operation from –65 °C to +150 °C, with moisture sensitivity level (MSL) 1 and no dry-pack requirement per J-STD-020B. The device sustains 40 A forward surge current (8.3 ms half-sine) and exhibits <1 μA standby leakage at 110 VWM, ensuring minimal system power loss in always-on applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Standoff) | 110 V - Maximum continuous DC or RMS voltage the device blocks without conduction; sets upper limit for protected circuit operating voltage. |
| VBR (Min @ IBR) | 122 V @ 1 mA - Guaranteed avalanche initiation threshold; ensures reliable triggering above normal operating voltage. |
| VC @ IPP | 196 V @ 5.2 A (10/1000 µs) - Clamped voltage during worst-case surge; must stay below protected IC's absolute max rating. |
| PPP | 500 W - Peak transient energy handling capability; defines survivability against standardized lightning-induced surges. |
| ID @ VWM | <1 μA - Ultra-low leakage current at rated standoff; critical for high-impedance sensor or battery-backed circuits. |
| TJ Range | –65 °C to +150 °C - Full operational temperature range; supports under-hood automotive and industrial ambient conditions. |
| Package | DO-214AC (SMA) - Industry-standard surface-mount outline with wide leads for thermal dissipation and mechanical robustness. |
Pinout & Package
DO-214AC (SMA) package: molded thermosetting epoxy case (UL94V-0), C-bend (modified J-bend) leads with RoHS-compliant annealed matte-tin plating; cathode indicated by band; polarity-critical for unidirectional operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Surge return path / ground reference | Connected to system ground or low-impedance return plane; carries full surge current during clamping. |
| Cathode | Protected line input / high-side connection | Connected to the line being protected (e.g., +110 V rail); voltage referenced to anode during conduction. |
Key Features
| Feature | Design Value |
|---|---|
| 500 W peak pulse power (10/1000 µs) | Enables compliance with IEC61000-4-5 Class 2 (42 Ω source) for secondary lightning protection in industrial power inputs. |
| Clamping voltage ≤196 V at 5.2 A | Provides ≥14 V margin below typical 210 V absolute max rating of 100 V-class MOSFETs and gate drivers. |
| RoHS-compliant "e3" termination | Matte-tin plating qualified for Pb-free reflow (260 °C/10 s), eliminating post-process solderability concerns. |
| MSL Level 1, no dry pack required | Eliminates baking preconditioning before SMT assembly, reducing manufacturing cost and cycle time. |
| –65 °C to +150 °C operating range | Supports deployment in engine control units, railway signaling, and outdoor telecom enclosures without derating. |
Applications
| Industrial Power Input Protection | Telecom Data Line Surge Suppression |
|---|---|
|
Use Scenario: 110 V DC input stage of programmable logic controller (PLC) power supply exposed to load dump and lightning-induced transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between +110 V rail and chassis ground to clamp surges before they reach upstream DC-DC converter ICs. Use Value: Limits transient voltage to ≤196 V, preserving 200 V-rated input capacitors and preventing latch-up in buck controller ICs. |
Use Scenario: RS-485 communication port on base station remote radio unit subjected to EFT bursts and induced RF coupling. IC Role / Device Role / Timing Role: TVS connected across differential pair (A/B) and ground to shunt common-mode surges while maintaining signal integrity. Use Value: Sub-100 ps response ensures clamping occurs before ESD pulse edge reaches transceiver IC, meeting IEC61000-4-2 ±8 kV contact discharge. |
| Automotive Body Control Module | Renewable Energy Inverter DC Link |
|
Use Scenario: 12 V auxiliary supply rail in BCM exposed to ISO 7637-2 Pulse 1/2a/3a transients during vehicle cranking and alternator load dump. IC Role / Device Role / Timing Role: Unidirectional TVS installed at connector entry point to absorb negative-going transients on switched 12 V lines. Use Value: Withstands 40 A 8.3 ms half-sine surge and maintains <1 μA leakage, avoiding battery drain in sleep mode. |
Use Scenario: DC link between PV array and inverter where 100–110 V nominal string voltage requires overvoltage protection against lightning-induced spikes. IC Role / Device Role / Timing Role: TVS placed across DC+ and DC− terminals to clamp common-mode surges before entering MPPT controller and IGBT gate drivers. Use Value: 500 W rating and 122 V breakdown ensure reliable suppression of 10/1000 µs surges up to 5.2 A without thermal runaway. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ110AHE3/TR13 | Same electrical specs but includes high-reliability screening (HTRB, surge, temp cycling) per MIL-PRF-19500 JANTX level. | Required for aerospace avionics or military-grade power interfaces where extended life testing is mandated. | Select SMAJ110AHE3/TR13 only when qualification to MIL-PRF-19500 is contractually required; otherwise standard SMAJ110AE3/TR13 suffices. |
| SMBJ110A-E3/52 | Same VWM/VBR/VC, but SMB package (DO-214AA) offers lower IPP (4.5 A) and 600 W PPP due to different thermal mass. | Better suited for space-constrained layouts where footprint reduction outweighs peak current margin. | Choose SMBJ110A-E3/52 if board area is constrained and 4.5 A IPP meets system surge test requirements; verify thermal performance on target PCB. |
Compared with SMAJ110AE3/TR13, SMAJ110AHE3/TR13 adds qualification rigor without altering electrical behavior, while SMBJ110A-E3/52 trades package size for reduced surge current headroom-both require explicit validation against the same IEC61000-4-5 test waveform and PCB thermal layout.
Availability
SMAJ110AE3/TR13 is available at Aetrix Electronics and suitable for industrial power inputs, telecom data lines, automotive body control modules, and renewable energy inverter DC links requiring stable component supply across multi-year production cycles.
Supply support for SMAJ110AE3/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-environment power electronics, emphasizing thermal robustness, low leakage, and repeatable clamping performance across extreme temperature ranges.
FAQ
What is the clamping voltage of SMAJ110AE3/TR13 at its rated peak pulse current?
The SMAJ110AE3/TR13 clamps to a maximum of 196 V when subjected to a 5.2 A peak pulse current with a 10/1000 µs waveform. This value is measured under standardized test conditions and guarantees that downstream components see no more than 196 V during a defined surge event. The SMAJ110AE3/TR13 achieves this clamping performance while maintaining sub-1 µA leakage at its 110 V standoff voltage.
Is SMAJ110AE3/TR13 RoHS compliant and compatible with lead-free reflow?
Yes, the "e3" suffix in SMAJ110AE3/TR13 indicates RoHS-compliant matte-tin plating qualified for lead-free reflow soldering at 260 °C for up to 10 seconds. The device meets J-STD-020B MSL Level 1, meaning it can be mounted directly from tape-and-reel without baking. SMAJ110AE3/TR13 is fully compatible with standard Pb-free assembly processes used in industrial and telecom manufacturing.
How does SMAJ110AE3/TR13 differ from bidirectional variants like SMAJ110CAE3/TR13?
SMAJ110AE3/TR13 is unidirectional and conducts only in reverse bias (cathode to anode), making it ideal for protecting positive DC rails where polarity is fixed. SMAJ110CAE3/TR13 is bidirectional, with symmetrical clamping in both directions, suited for AC lines or differential data buses. SMAJ110AE3/TR13 has lower capacitance and faster response (<100 ps) than its bidirectional counterpart, which exhibits half the zero-bias capacitance of Figure 4.
What is the maximum steady-state power dissipation of SMAJ110AE3/TR13 on a standard FR4 PCB?
When mounted on a standard FR4 PCB with 1 oz copper and Microsemi's recommended footprint, SMAJ110AE3/TR13 dissipates up to 5 W at a lead temperature (TL) of 75 °C, or 1.56 W at ambient temperature (TA) of 25 °C. Its thermal resistance is 15 °C/W junction-to-lead, enabling effective heat transfer to the PCB copper pour. These ratings assume no additional heatsinking beyond the specified pad layout.
Can SMAJ110AE3/TR13 be used for IEC61000-4-5 Class 4 secondary lightning protection?
No-SMAJ110AE3/TR13 is rated for IEC61000-4-5 Class 4 only with 12 Ω source impedance (up to SMAJ12A), and for Class 4 with 42 Ω source impedance only up to SMAJ12A. For 110 V standoff, SMAJ110AE3/TR13 supports Class 1 (42 Ω) and Class 2 (42 Ω), as confirmed in the Applications section of the datasheet. Using it for Class 4 would exceed its 5.2 A IPP rating and risk failure.
SMAJ110AE3/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:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 110V
- Voltage - Breakdown (Min):
- 122V
- Voltage - Clamping (Max) @ Ipp:
- 177V
- Current - Peak Pulse (10/1000µs):
- 2.8A
- 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)
SMAJ110AE3/TR13 FAQ
1.How can I place an order for SMAJ110AE3/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAJ110AE3/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 SMAJ110AE3/TR13 reliable?
The price and inventory of SMAJ110AE3/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMAJ110AE3/TR13 is usually 5 days.
3.What payment methods are accepted for SMAJ110AE3/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ110AE3/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAJ110AE3/TR13?
SMAJ110AE3/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAJ110AE3/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 SMAJ110AE3/TR13?
For technical support, including SMAJ110AE3/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ110AE3/TR13 requirements.
6.How does Aetrix verify that SMAJ110AE3/TR13 is sourced from the original manufacturer or authorized distributors?
All SMAJ110AE3/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 SMAJ110AE3/TR13 meets industry standards.
7.What is the process for return or replacement of SMAJ110AE3/TR13?
All SMAJ110AE3/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ110AE3/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 SMAJ110AE3/TR13 part is unused and in its original packaging.
Return procedure for SMAJ110AE3/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMAJ110AE3/TR13 Tags
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ESD9B5.0ST5G
onsemi
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DESD3V3E1BL-7B
Diodes Incorporated
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ESD5Z3.3T1G
onsemi
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D5V0H1B2LP-7B
Diodes Incorporated
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D5V0P1B2LP-7B
Diodes Incorporated
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DESD5V0U1BA-7
Diodes Incorporated
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ESD5Z5.0T1G
onsemi
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DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
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PESD2V0Y1BSFYL
Nexperia USA Inc.
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DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
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D5V0L1B2WS-7
Diodes Incorporated
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