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Microchip Technology SMAJ54CAE3/TR13
- Part No.:
- SMAJ54CAE3/TR13
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAJ54CAE3/TR13.pdf
- Description:
- TVS DIODE 54VWM 87.1VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:4,719
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Product details
Overview
SMAJ54CAE3/TR13 from Microsemi is a bidirectional surface-mount transient voltage suppressor (TVS) designed for high-energy surge protection in DC power lines and signal interfaces. It features a 54 V standoff voltage (VWM), 60 V minimum breakdown voltage (VBR), clamps transients to ≤96.3 V at 5.2 A peak pulse current (IPP), and delivers 500 W peak pulse power (10/1000 µs). It is widely deployed in industrial power supplies and telecom interface circuits requiring IEC61000-4-5 Class 3 secondary lightning protection.
For engineers reviewing the SMAJ54CAE3/TR13 datasheet, SMAJ54CAE3/TR13 pinout, SMAJ54CAE3/TR13 application, or SMAJ54CAE3/TR13 equivalent, key selection criteria include bidirectional clamping behavior, RoHS-compliant matte-tin plating, DO-214AC package compatibility, and verified compliance with IEC61000-4-2 (ESD), IEC61000-4-4 (EFT), and IEC61000-4-5 (lightning) standards.
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 ensures suppression before sensitive downstream components experience overvoltage stress.
The device uses an avalanche diode structure optimized for low clamping ratio (VC/VBR ≈ 1.61) and stable thermal performance up to +150°C junction temperature. Its 15°C/W junction-to-lead thermal resistance supports reliable power dissipation when mounted on FR4 with recommended footprint.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 54 V - Maximum continuous reverse working voltage before leakage exceeds 1 μA; defines safe operating range for protected line. |
| VBR min | 60 V @ 1 mA - Minimum voltage at which avalanche conduction begins; ensures predictable turn-on threshold. |
| VC @ IPP | 96.3 V @ 5.2 A - Clamped voltage during 10/1000 µs surge; determines maximum stress seen by downstream ICs. |
| PPP | 500 W - Peak pulse power handling capability; enables robust protection against lightning-induced surges per IEC61000-4-5. |
| IPP | 5.2 A - Peak pulse current supported at rated clamping voltage; correlates directly with surge energy absorption (W·s). |
| TJ range | –65°C to +150°C - Operating junction temperature range; supports deployment in harsh industrial and automotive under-hood environments. |
| Package | DO-214AC (SMA) - Standardized surface-mount outline with wide leads for low thermal resistance (15°C/W) and high surge current path integrity. |
Pinout & Package
DO-214AC (SMA) package: molded thermosetting epoxy body (UL94V-0), C-bend tin-lead or RoHS-compliant matte-tin terminals, cathode band omitted for bidirectional configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bidirectional surge path | Either terminal serves as input or return; no polarity dependency-enables placement on AC or floating nodes without orientation check. |
| Case / Body | Thermal & mechanical interface | Non-electrical; provides mechanical anchoring and heat conduction path to PCB copper; requires recommended pad layout (A=1.70–2.26 mm, D=4.93–5.48 mm) for reliability. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of differential or AC-coupled signals (e.g., RS-485, CAN bus, Ethernet PHY) without external polarity management. |
| IEC61000-4-5 Class 3 compliance | Validated for secondary lightning surges with 42 Ω source impedance up to 1 kV, supporting industrial control cabinet-level immunity requirements. |
| RoHS-compliant "e3" termination | Matte-tin plating meets JEDEC J-STD-020B Level 1 moisture sensitivity; eliminates dry-pack requirement and supports lead-free reflow (260°C/10 s). |
| 500 W peak pulse rating | Provides >2× margin over typical 200–300 W TVS used in telecom line cards, extending service life under repetitive surge exposure. |
Applications
| Industrial Power Input Protection | RS-485 Data Line Protection |
|---|---|
Use Scenario: 24 V DC power rail feeding PLC I/O modules exposed to inductive load switching and nearby motor drives. IC Role / Device Role / Timing Role: Primary surge shunt element placed at board edge before DC-DC converter input. Use Value: Limits transient voltage to ≤96.3 V during 5.2 A surges, preventing damage to upstream rectifier diodes and downstream buck controller ICs. | Use Scenario: Half-duplex RS-485 transceiver bus in factory automation network subject to ESD events and ground potential differences. IC Role / Device Role / Timing Role: Bidirectional clamp across A/B differential pair, referenced to local ground plane. Use Value: Suppresses ±8 kV contact ESD (IEC61000-4-2) and ±4 kV EFT bursts (IEC61000-4-4) without distorting signal integrity due to low capacitance (<100 pF at 0 V). |
| Telecom Line Card Interface | Automotive Body Control Module |
Use Scenario: T1/E1 line interface card in central office equipment subjected to induced surges from adjacent power cables. IC Role / Device Role / Timing Role: First-stage protector on tip/ring lines before transformer coupling and receiver front-end. Use Value: Absorbs 500 W surges per IEC61000-4-5 (42 Ω, 10/1000 µs), reducing stress on secondary protection (GDT + MOV) and preserving signal fidelity. | Use Scenario: 12 V battery-supplied body control module connected to door lock actuators and window motors. IC Role / Device Role / Timing Role: Bidirectional clamp on power input rail to mitigate load dump and inductive kickback transients. Use Value: Withstands –65°C to +150°C operation and clamps 12 V rail transients to <100 V, protecting microcontroller GPIO and LIN transceivers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ54CA | No "e3" RoHS suffix; tin-lead plating instead of matte-tin; identical electrical specs and DO-214AC package. | Not suitable for lead-free assembly; requires Pb-based solder process and fails RoHS compliance reporting. | Select SMAJ54CAE3/TR13 for new designs targeting RoHS and lead-free reflow; use SMAJ54CA only for legacy repair or mixed-technology boards. |
| SMBJ54CA-E3/52 | Higher 600 W peak power rating; SMB (DO-214AA) package with larger thermal mass; 10% higher VC (107 V @ 4.7 A). | Better suited for higher-energy surges but requires larger PCB footprint; not drop-in compatible due to different package dimensions. | Choose SMBJ54CA-E3/52 when surge energy exceeds 500 W margin or thermal cycling demands exceed SMAJ's 15°C/W limit. |
Compared with SMAJ54CA and SMBJ54CA-E3/52, the SMAJ54CAE3/TR13 offers optimal balance of RoHS compliance, industry-standard DO-214AC footprint, and validated 500 W IEC61000-4-5 Class 3 performance-making it the preferred choice for cost-sensitive, high-volume industrial and telecom designs requiring lead-free manufacturing.
Availability
SMAJ54CAE3/TR13 is available at Aetrix Electronics and suitable for industrial power input protection, RS-485 data line hardening, and telecom line card interface applications requiring stable component supply and full RoHS compliance.
Supply support for SMAJ54CAE3/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 SMAJ54CAE3/TR13?
The "CA" suffix denotes a bidirectional configuration: the SMAJ54CAE3/TR13 conducts symmetrically in both forward and reverse directions, making it suitable for protecting AC-coupled or floating signal lines such as RS-485, CAN, or Ethernet PHY interfaces. Unlike unidirectional variants (e.g., SMAJ54A), it has no cathode marking and requires no polarity alignment during placement.
Is SMAJ54CAE3/TR13 compliant with IEC61000-4-5 for lightning surge protection?
Yes, SMAJ54CAE3/TR13 is explicitly rated for IEC61000-4-5 secondary lightning protection with 42 Ω source impedance up to Class 3 (1 kV test level). Its 500 W peak pulse power and 96.3 V clamping voltage ensure downstream circuitry remains within safe operating limits during standardized surge waveforms, as confirmed in Microsemi's MSC0270A datasheet.
What is the maximum steady-state power dissipation of SMAJ54CAE3/TR13?
SMAJ54CAE3/TR13 dissipates up to 1.56 W at 25°C ambient (TA) and 5 W at 75°C lead temperature (TL) when mounted on FR4 with the recommended footprint. This steady-state rating applies only under continuous DC bias-not during transient events-and must be derated above 75°C per the published thermal curve in Figure 3 of the datasheet.
Does SMAJ54CAE3/TR13 require moisture preconditioning before reflow?
No, SMAJ54CAE3/TR13 carries IPC/JEDEC J-STD-020B Moisture Sensitivity Level 1 rating, meaning it may be stored indefinitely at ≤30°C/60% RH without dry-pack or baking. Its RoHS-compliant matte-tin plating and void-free epoxy body eliminate popcorning risk during standard lead-free reflow profiles (peak 260°C for 10 s).
How does the clamping voltage of SMAJ54CAE3/TR13 compare to its breakdown voltage?
SMAJ54CAE3/TR13 has a minimum breakdown voltage (VBR) of 60 V at 1 mA and a maximum clamping voltage (VC) of 96.3 V at 5.2 A peak pulse current-yielding a clamping ratio of ~1.61. This ratio reflects the device's ability to limit transient overvoltage while maintaining low dynamic impedance, critical for protecting 54 V-rated systems without excessive voltage overshoot.
SMAJ54CAE3/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):
- 54V
- Voltage - Breakdown (Min):
- 60V
- Voltage - Clamping (Max) @ Ipp:
- 87.1V
- Current - Peak Pulse (10/1000µs):
- 5.7A
- 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)
SMAJ54CAE3/TR13 FAQ
1.How can I place an order for SMAJ54CAE3/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAJ54CAE3/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 SMAJ54CAE3/TR13 reliable?
The price and inventory of SMAJ54CAE3/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMAJ54CAE3/TR13 is usually 5 days.
3.What payment methods are accepted for SMAJ54CAE3/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ54CAE3/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAJ54CAE3/TR13?
SMAJ54CAE3/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAJ54CAE3/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 SMAJ54CAE3/TR13?
For technical support, including SMAJ54CAE3/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ54CAE3/TR13 requirements.
6.How does Aetrix verify that SMAJ54CAE3/TR13 is sourced from the original manufacturer or authorized distributors?
All SMAJ54CAE3/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 SMAJ54CAE3/TR13 meets industry standards.
7.What is the process for return or replacement of SMAJ54CAE3/TR13?
All SMAJ54CAE3/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ54CAE3/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 SMAJ54CAE3/TR13 part is unused and in its original packaging.
Return procedure for SMAJ54CAE3/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMAJ54CAE3/TR13 Tags
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