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Microchip Technology SMAJ110CAE3/TR13
- Part No.:
- SMAJ110CAE3/TR13
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAJ110CAE3/TR13.pdf
- Description:
- TVS DIODE 110VWM 177VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:4,293
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Product details
Overview
SMAJ110CAE3/TR13 from Microsemi is a bidirectional surface-mount transient voltage suppressor (TVS) designed for high-energy surge protection in DC power rails and signal lines. It features a 110 V working standoff voltage (VWM), 122 V minimum breakdown voltage (VBR), clamps transients 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 interfaces, and automotive body electronics for IEC 61000-4-5 secondary lightning and IEC 61000-4-2 ESD protection.
For engineers reviewing the SMAJ110CAE3/TR13 datasheet, SMAJ110CAE3/TR13 pinout, SMAJ110CAE3/TR13 application, or SMAJ110CAE3/TR13 equivalent, key selection criteria include bidirectional clamping capability, RoHS-compliant matte-tin plating, DO-214AC package thermal performance (15 °C/W junction-to-lead), and verified compliance with IEC 61000-4-5 Class 1 (42 Ω source) and Class 2 (12 Ω source) surge levels.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, enabling robust protection of AC-coupled or floating signal paths without polarity constraints. Its <100 ps theoretical response time (unidirectional) and <5 ns for bidirectional operation ensures suppression before sensitive downstream circuitry sustains damage from fast-rising transients such as ESD or inductive switching spikes.
The device uses an avalanche diode structure optimized for low clamping ratio (VC/VBR ≈ 1.61) and stable leakage (<2.6 µA @ VWM). Thermal resistance of 15 °C/W (junction-to-lead) and 80 °C/W (junction-to-ambient on FR4) supports reliable operation under repeated surges when mounted per recommended footprint.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 110 V - Maximum continuous reverse operating voltage before significant leakage; defines safe DC rail margin. |
| VBR min | 122 V @ 1 mA - Minimum voltage at which avalanche conduction begins; ensures predictable turn-on threshold. |
| VC @ IPP | 196 V @ 5.2 A (10/1000 µs) - Clamped voltage during worst-case surge; determines maximum stress on protected ICs. |
| PPP | 500 W - Peak pulse power handling capacity; enables protection against high-energy transients like lightning-induced surges. |
| ID @ VWM | ≤2.6 µA - Standby leakage current at rated standoff; negligible loading on 110 V supply rails. |
| Package | DO-214AC (SMA) - Industry-standard surface-mount outline with wide leads for thermal dissipation and mechanical reliability. |
| RoHS | e3 suffix - Matte-tin plating compliant with EU RoHS Directive 2011/65/EU; no lead, cadmium, or hexavalent chromium. |
Pinout & Package
DO-214AC (SMA) package: molded thermosetting epoxy case meeting UL94V-0; void-free construction; C-bend (modified J-bend) leads with annealed matte-tin plating; cathode band omitted on bidirectional devices (SMAJxxCA).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bidirectional avalanche junction | Provides identical clamping behavior for positive and negative transients; no polarity marking required. |
| Case / Body | Thermal path & mechanical anchor | Wide lead frame and exposed copper area enable 15 °C/W junction-to-lead thermal resistance for sustained surge duty. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC signals or ungrounded buses without external polarity management. |
| 500 W peak pulse rating (10/1000 µs) | Supports IEC 61000-4-5 Class 1 (42 Ω) and Class 2 (12 Ω) secondary lightning surge immunity in industrial and telecom systems. |
| RoHS-compliant e3 plating | Matte-tin termination meets JEDEC J-STD-020B Level 1 moisture sensitivity; no dry pack required prior to reflow. |
| Fast response time | <5 ns turn-on for bidirectional mode ensures suppression of ESD (IEC 61000-4-2) and EFT (IEC 61000-4-4) events before IC latch-up or gate oxide rupture. |
| Low clamping ratio (VC/VBR) | 1.61 (196 V / 122 V) minimizes overvoltage stress on protected components while maintaining high surge energy absorption. |
Applications
| Industrial Power Input Protection | Telecom Line Interface |
|---|---|
|
Use Scenario: 110 V DC input stage of programmable logic controller (PLC) power module exposed to load dump and field wiring surges. IC Role / Device Role / Timing Role: Primary surge clamp placed upstream of DC-DC converter input to limit transient voltage to safe levels for MOSFET gate drivers and control ICs. Use Value: Withstands 500 W surges per IEC 61000-4-5 (42 Ω source), preventing catastrophic failure of downstream regulators and microcontrollers. |
Use Scenario: RS-485 data line in outdoor base station equipment subjected to induced lightning transients and ESD events. IC Role / Device Role / Timing Role: Bidirectional TVS shunting common-mode surges between differential pair and chassis ground, preserving signal integrity. Use Value: Symmetrical clamping at ±196 V ensures equal protection for both polarities of differential signaling without biasing complications. |
| Automotive Body Control Module | Medical Equipment AC Mains Filter |
|
Use Scenario: 12 V–110 V auxiliary power rail in vehicle body control unit (BCU) interfacing with CAN/LIN networks and sensors. IC Role / Device Role / Timing Role: Secondary-level transient suppressor after primary fuse and choke filtering, absorbing residual switching noise and load dump spikes. Use Value: Low standby current (<2.6 µA) avoids battery drain; DO-214AC package withstands automotive thermal cycling (-40°C to +125°C). |
Use Scenario: Isolated AC-DC power supply input stage in Class II medical device requiring reinforced insulation and low leakage. IC Role / Device Role / Timing Role: Surge limiter on secondary-side DC bus to protect optocouplers, feedback controllers, and isolation barriers from reflected transients. Use Value: UL94V-0 epoxy body and 15 °C/W thermal resistance ensure safety compliance and long-term reliability under repeated surge stress. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Littelfuse SMAJ110CA | Identical VWM (110 V), VBR (122 V min), VC (196 V), and DO-214AC package; same 500 W rating but non-RoHS tin-lead plating. | Not suitable for RoHS-restricted production; requires lead-free assembly process compatibility verification. | Select if legacy tin-lead reflow is used and RoHS exemption applies. |
| Vishay SMAJ110CAHE3_A/H | Same electrical specs and DO-214AC package; enhanced moisture sensitivity level (MSL 1) and tighter VC tolerance (±5 % vs typical). | Better suited for high-reliability aerospace or medical applications requiring extended shelf life and tighter parametric control. | Select when MSL 1 assurance and tighter clamping consistency are critical for qualification. |
Compared with SMAJ110CAE3/TR13, Littelfuse SMAJ110CA lacks RoHS compliance and requires tin-lead soldering, while Vishay SMAJ110CAHE3_A/H offers identical specs with improved moisture robustness and tighter VC control-making it preferable for mission-critical designs where process control and long-term storage stability matter.
Availability
SMAJ110CAE3/TR13 is available at Aetrix Electronics and suitable for industrial power input protection, telecom line interface, automotive body control modules, and medical equipment AC mains filter applications requiring stable component supply and full RoHS compliance.
Supply support for SMAJ110CAE3/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 solutions for aerospace, defense, industrial, and communications markets.
The SMAJ series was developed specifically for surface-mount transient voltage suppression in harsh environments, emphasizing high pulse power density, fast response, and robust thermal performance in compact DO-214AC packaging.
FAQ
What does the 'CA' suffix indicate in SMAJ110CAE3/TR13?
The 'CA' suffix in SMAJ110CAE3/TR13 denotes a bidirectional configuration, meaning the device provides symmetrical transient suppression for both positive and negative voltage excursions. Unlike unidirectional variants (e.g., SMAJ110A), SMAJ110CAE3/TR13 has no polarity marking and functions identically in either direction-ideal for AC-coupled or floating signal lines where polarity cannot be guaranteed.
Is SMAJ110CAE3/TR13 RoHS compliant and what does the 'e3' suffix mean?
Yes, SMAJ110CAE3/TR13 is fully RoHS compliant. The 'e3' suffix specifies annealed matte-tin plating per JEDEC standards, eliminating lead, cadmium, mercury, hexavalent chromium, PBB, and PBDE. This plating also meets IPC/JEDEC J-STD-020B Level 1 moisture sensitivity-no dry pack required-and supports standard lead-free reflow profiles up to 260 °C for 10 seconds.
What is the clamping voltage of SMAJ110CAE3/TR13 and how is it measured?
The maximum clamping voltage (VC) of SMAJ110CAE3/TR13 is 196 V, measured at a peak pulse current (IPP) of 5.2 A using the standardized 10/1000 µs double-exponential waveform. This value represents the highest voltage that will appear across the device during a worst-case surge event, directly limiting overvoltage stress on downstream components protected by SMAJ110CAE3/TR13.
Can SMAJ110CAE3/TR13 be used for IEC 61000-4-5 surge testing?
Yes, SMAJ110CAE3/TR13 is validated for IEC 61000-4-5 secondary lightning surge immunity. It supports Class 1 (42 Ω source impedance) and Class 2 (12 Ω source impedance) testing per the datasheet, delivering full 500 W pulse power handling at 10/1000 µs. Its 196 V clamping voltage ensures protected circuits remain within safe operating limits during standardized surge events.
What is the thermal resistance of SMAJ110CAE3/TR13 and why does it matter?
SMAJ110CAE3/TR13 has a junction-to-lead thermal resistance (RθJL) of 15 °C/W and junction-to-ambient (RθJA) of 80 °C/W when mounted on FR4 with 1 oz copper and the recommended footprint. This low RθJL enables efficient heat transfer from the silicon junction to the PCB copper, allowing SMAJ110CAE3/TR13 to survive repeated 500 W surges without thermal runaway or parameter drift.
SMAJ110CAE3/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:
- 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)
SMAJ110CAE3/TR13 FAQ
1.How can I place an order for SMAJ110CAE3/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAJ110CAE3/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 SMAJ110CAE3/TR13 reliable?
The price and inventory of SMAJ110CAE3/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMAJ110CAE3/TR13 is usually 5 days.
3.What payment methods are accepted for SMAJ110CAE3/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ110CAE3/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAJ110CAE3/TR13?
SMAJ110CAE3/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAJ110CAE3/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 SMAJ110CAE3/TR13?
For technical support, including SMAJ110CAE3/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ110CAE3/TR13 requirements.
6.How does Aetrix verify that SMAJ110CAE3/TR13 is sourced from the original manufacturer or authorized distributors?
All SMAJ110CAE3/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 SMAJ110CAE3/TR13 meets industry standards.
7.What is the process for return or replacement of SMAJ110CAE3/TR13?
All SMAJ110CAE3/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ110CAE3/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 SMAJ110CAE3/TR13 part is unused and in its original packaging.
Return procedure for SMAJ110CAE3/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMAJ110CAE3/TR13 Tags
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ESD9B5.0ST5G
onsemi
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DESD3V3E1BL-7B
Diodes Incorporated
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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
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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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Diodes Incorporated
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