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Microchip Technology SMAJ64CAE3/TR13
- Part No.:
- SMAJ64CAE3/TR13
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAJ64CAE3/TR13.pdf
- Description:
- TVS DIODE 64VWM 103VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:7,685
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Product details
Overview
SMAJ64CAE3/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 and signal lines. It features a 64 V standoff voltage (VWM), 71.1 V minimum breakdown voltage (VBR), 114 V clamping voltage (VC) at 4.4 A peak pulse current, and 500 W peak pulse power rating per 10/1000 µs waveform - deployed in industrial power supplies, telecom interfaces, and automotive body electronics.
For engineers reviewing the SMAJ64CAE3/TR13 datasheet, SMAJ64CAE3/TR13 pinout, SMAJ64CAE3/TR13 application, or SMAJ64CAE3/TR13 equivalent, key selection criteria include bidirectional clamping capability, RoHS-compliant matte-tin plating, DO-214AC package compatibility, IEC61000-4-2/4-4/4-5 compliance, and thermal performance on FR4 with 1 oz copper.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, enabling 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 sub-nanosecond suppression of fast transients such as ESD contact discharge.
The device uses silicon avalanche junction technology housed in a void-free thermosetting epoxy case rated UL94V-0, with C-bend leads optimized for solderability and thermal conduction. Junction-to-lead thermal resistance is 15 °C/W, supporting reliable 5 W steady-state dissipation at lead temperature of 75 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Standoff) | 64 V - maximum continuous reverse working voltage before clamping begins; defines safe operating range for protected circuit. |
| VBR (Min) | 71.1 V @ 1 mA - guaranteed avalanche initiation threshold; ensures predictable turn-on during overvoltage events. |
| VC @ IPP | 114 V @ 4.4 A - clamped voltage under 10/1000 µs surge; determines worst-case stress on downstream components. |
| PPP | 500 W - peak pulse power handling capacity; supports high-energy surges common in industrial environments. |
| ID @ VWM | 4.4 µA - leakage current at rated standoff; low enough to avoid loading sensitive analog or low-power circuits. |
| Operating Temp | −65 °C to +150 °C - wide junction temperature range enables use in under-hood automotive or outdoor telecom enclosures. |
| Package | DO-214AC (SMA) - industry-standard surface-mount outline with 2.57–2.79 mm width and 4.93–5.48 mm length; compatible with standard reflow profiles. |
Pinout & Package
DO-214AC (SMA) package: molded thermosetting epoxy case, void-free, UL94V-0 rated; C-bend (modified J-bend) leads with RoHS-compliant annealed matte-tin plating; cathode band omitted on bidirectional devices.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (A) | Transient return path (bidirectional) | Connects to line being protected; conducts surge current to ground in either polarity during overvoltage. |
| Cathode (K) | Transient return path (bidirectional) | Electrically identical to Anode in CA-series devices; forms symmetrical clamping pair with Anode terminal. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC signals or ungrounded differential lines without polarity concerns. |
| IEC61000-4-5 compliant | Validated for secondary lightning protection up to Class 4 (42 Ω source) with 64 V VWM - covers telecom and industrial port-level requirements. |
| RoHS-compliant "e3" suffix | Meets EU Directive 2011/65/EU with annealed matte-tin plating; eliminates lead-based solder compatibility issues. |
| Moisture sensitivity Level 1 | No dry pack required per IPC/JEDEC J-STD-020B - simplifies handling and eliminates bake-out prior to assembly. |
| Tape-and-reel packaging | TR13 variant supplied on 13-inch reels (2500 pcs); supports automated SMT placement with EIA-481-1-A standard carrier tape. |
Applications
| Industrial Power Input Protection | Automotive Body Control Module (BCM) |
|---|---|
Use Scenario: 24 V DC input rail in programmable logic controllers exposed to load dump and inductive switching transients. IC Role / Device Role / Timing Role: Bidirectional TVS placed between VIN and GND to clamp positive/negative surges before they reach DC-DC converters and microcontrollers. Use Value: 114 V clamping voltage limits stress on 36 V-rated input stages; 500 W rating withstands 100 ms load dump pulses per ISO 7637-2. | Use Scenario: LIN bus transceiver interface subjected to ESD events and battery reversal transients in door module assemblies. IC Role / Device Role / Timing Role: Placed across LIN signal and ground to suppress ±8 kV contact ESD (IEC61000-4-2) and induced RF coupling. Use Value: Symmetrical clamping ensures equal protection for both signal polarities; DO-214AC footprint fits tight PCB space constraints near connectors. |
| Telecom Ethernet Port Protection | Medical Sensor Interface |
Use Scenario: 48 V PoE-powered Ethernet ports in network switches vulnerable to lightning-induced surges on data pairs. IC Role / Device Role / Timing Role: Used in common-mode configuration across differential pairs to shunt surge energy to chassis ground. Use Value: 64 V VWM aligns with IEEE 802.3af PoE voltage margins; bidirectional operation handles polarity-agnostic surge coupling. | Use Scenario: Analog front-end of patient monitoring equipment connected to external sensors via shielded cables prone to ESD and RF interference. IC Role / Device Role / Timing Role: Mounted at connector entry point to protect precision op-amps and ADC inputs from electrostatic discharge. Use Value: 4.4 µA leakage at 64 V avoids signal offset errors; low capacitance (<50 pF typical) preserves bandwidth of mV-level sensor signals. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ64CA | Same electrical specs but non-RoHS; SnPb plating instead of matte-tin; no "e3" suffix. | Not suitable for new designs targeting RoHS compliance or lead-free assembly. | Select SMAJ64CAE3/TR13 when lead-free soldering and environmental compliance are mandatory. |
| SMBJ64CA-E3/52 | Higher 600 W PPP, same VWM/VC; SMB package (larger footprint, 3.56 mm width vs. 2.79 mm). | Requires PCB layout change; better suited for higher-energy surge environments where space allows. | Choose SMBJ64CA-E3/52 only if system-level testing demands >500 W surge margin and board area permits larger package. |
Compared with SMAJ64CA and SMBJ64CA-E3/52, the SMAJ64CAE3/TR13 delivers RoHS-compliant, space-efficient 500 W protection in the smallest standardized surface-mount TVS outline - ideal for cost-sensitive, high-volume industrial and automotive modules requiring zero layout revision.
Availability
SMAJ64CAE3/TR13 is available at Aetrix Electronics and suitable for industrial power input protection, automotive body control modules, telecom Ethernet port hardening, and medical sensor interface circuits requiring stable component supply and full traceability.
Supply support for SMAJ64CAE3/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, mixed-signal, and radiation-hardened components for aerospace, defense, and industrial markets.
The SMAJ series was developed for surface-mount transient suppression in space-constrained, high-surge environments - emphasizing fast response, repeatable clamping, and rugged packaging for mission-critical DC power and interface protection.
FAQ
What is the clamping voltage of SMAJ64CAE3/TR13 at its rated peak pulse current?
The SMAJ64CAE3/TR13 has a maximum clamping voltage (VC) of 114 V at 4.4 A peak pulse current (IPP) under the standard 10/1000 µs waveform. This value is measured across the device terminals during surge conduction and defines the upper voltage limit imposed on protected circuitry - critical for ensuring downstream ICs remain within absolute maximum ratings. The SMAJ64CAE3/TR13 achieves this while maintaining bidirectional symmetry and RoHS-compliant construction.
Is SMAJ64CAE3/TR13 suitable for IEC61000-4-5 lightning surge testing?
Yes, SMAJ64CAE3/TR13 is validated for secondary lightning surge protection per IEC61000-4-5 with 42 Ω source impedance up to Class 4 (for VWM ≤ 12 V) and Class 1 (for VWM ≤ 100 V). With its 64 V standoff voltage, it qualifies for Class 1 testing - covering common industrial and telecom port-level requirements. The SMAJ64CAE3/TR13's 500 W rating and sub-5 ns response ensure effective energy diversion without degradation across repeated surges.
Does SMAJ64CAE3/TR13 have polarity markings on the package?
No, SMAJ64CAE3/TR13 does not feature a cathode band or polarity marking because it is a bidirectional TVS device (indicated by the "CA" suffix). Unlike unidirectional variants, CA-series parts conduct identically in both directions and therefore omit the standard cathode identification band. This design eliminates orientation errors during automated placement and simplifies layout for symmetric protection schemes - a key characteristic of the SMAJ64CAE3/TR13.
What is the moisture sensitivity level (MSL) of SMAJ64CAE3/TR13?
SMAJ64CAE3/TR13 is rated Moisture Sensitivity Level 1 per IPC/JEDEC J-STD-020B, meaning it may be stored indefinitely at ambient conditions (≤30 °C / 60% RH) without baking or dry packing. This eliminates pre-reflow bake cycles and reduces handling complexity - especially beneficial for high-throughput SMT lines. The SMAJ64CAE3/TR13 achieves MSL-1 through hermetic void-free epoxy encapsulation and controlled internal humidity barriers.
Can SMAJ64CAE3/TR13 replace SMAJ64A in a design?
No - SMAJ64CAE3/TR13 is bidirectional while SMAJ64A is unidirectional, making them functionally incompatible without circuit redesign. SMAJ64A clamps only in reverse bias and conducts forward surge up to 40 A, whereas SMAJ64CAE3/TR13 clamps symmetrically in both directions with no forward conduction path. Substituting SMAJ64CAE3/TR13 for SMAJ64A would compromise protection on polarized DC rails and potentially cause latch-up. Always verify polarity architecture before selecting the SMAJ64CAE3/TR13.
SMAJ64CAE3/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):
- 64V
- Voltage - Breakdown (Min):
- 71.1V
- Voltage - Clamping (Max) @ Ipp:
- 103V
- Current - Peak Pulse (10/1000µs):
- 4.9A
- 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)
SMAJ64CAE3/TR13 FAQ
1.How can I place an order for SMAJ64CAE3/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAJ64CAE3/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 SMAJ64CAE3/TR13 reliable?
The price and inventory of SMAJ64CAE3/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMAJ64CAE3/TR13 is usually 5 days.
3.What payment methods are accepted for SMAJ64CAE3/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ64CAE3/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAJ64CAE3/TR13?
SMAJ64CAE3/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAJ64CAE3/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 SMAJ64CAE3/TR13?
For technical support, including SMAJ64CAE3/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ64CAE3/TR13 requirements.
6.How does Aetrix verify that SMAJ64CAE3/TR13 is sourced from the original manufacturer or authorized distributors?
All SMAJ64CAE3/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 SMAJ64CAE3/TR13 meets industry standards.
7.What is the process for return or replacement of SMAJ64CAE3/TR13?
All SMAJ64CAE3/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ64CAE3/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 SMAJ64CAE3/TR13 part is unused and in its original packaging.
Return procedure for SMAJ64CAE3/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMAJ64CAE3/TR13 Tags
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