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Microchip Technology SMAJ54E3/TR13
- Part No.:
- SMAJ54E3/TR13
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAJ54E3/TR13.pdf
- Description:
- TVS DIODE 54VWM 96.3VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:6,892
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Product details
Overview
SMAJ54E3/TR13 from Microsemi is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode designed for primary and secondary lightning surge protection in DC power rails and signal lines. It features a 54 V reverse standoff voltage (VWM), 60 V minimum breakdown voltage (VBR), 96.3 V maximum clamping voltage at 5.2 A peak pulse current, and 500 W peak pulse power rating per 10/1000 µs waveform - deployed in telecom power supplies and industrial I/O interfaces.
For engineers reviewing the SMAJ54E3/TR13 datasheet, SMAJ54E3/TR13 pinout, SMAJ54E3/TR13 application, or SMAJ54E3/TR13 equivalent, this page delivers verified electrical parameters, JEDEC DO-214AC package details, IEC 61000-4-2/4-4/4-5 compliance context, and validated alternative parts for ESD, EFT, and induced-surge protection design.
Technical Context
This unidirectional TVS operates as a voltage-clamped shunt device triggered above its 60 V breakdown threshold, delivering sub-100 ps response time to suppress fast transients before sensitive downstream circuitry is damaged. Its low 1.56 W steady-state power dissipation at 25 °C and 5 W at 75 °C lead temperature enables reliable operation on FR4 PCBs with standard thermal relief footprints.
The SMAJ54E3/TR13 complies with IEC 61000-4-5 secondary lightning testing using both 42 Ω and 12 Ω source impedances, supporting Class 1–4 protection levels depending on system-level coordination. Its RoHS-compliant matte-tin-plated C-bend leads meet MIL-STD-750 Method 2026 solderability requirements and withstand 260 °C for 10 s reflow.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 54 V - Maximum continuous reverse operating voltage before conduction begins; defines safe DC rail margin for 48 V systems. |
| VBR min @ IBR | 60 V @ 1 mA - Minimum breakdown voltage ensures consistent triggering across temperature and lot variation. |
| VC @ IPP | 96.3 V @ 5.2 A - Clamping voltage during 10/1000 µs surge limits stress on protected ICs like RS-485 transceivers or PMICs. |
| PPP | 500 W - Peak pulse power handling capacity determines survivability against repetitive surges in industrial environments. |
| ID @ VWM | 1 µA - Ultra-low leakage current prevents measurable power loss or bias shift in high-impedance sensing circuits. |
| TJ range | −65 °C to +150 °C - Wide junction temperature range supports deployment in automotive under-hood or outdoor telecom enclosures. |
Pinout & Package
Package: DO-214AC (SMA), surface-mount, void-free thermosetting epoxy case meeting UL94V-0; moisture sensitivity level (MSL) 1 - no dry pack required per IPC/JEDEC J-STD-020B.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Anode-to-cathode forward path | Connects to protected line; cathode ties to ground or lower-potential reference to enable clamping during positive transients. |
| Anode | Reverse-biased terminal | Connected to system ground or return path; forms low-impedance surge shunt when VWM exceeded. |
Key Features
| Feature | Design Value |
|---|---|
| RoHS-compliant "e3" suffix | Matte-tin plating meets EU Directive 2011/65/EU and eliminates lead-based solder compatibility concerns. |
| DO-214AC footprint | Standardized 2-pin layout compatible with automated SMT placement and reflow profiles per JEDEC MS-013. |
| IEC 61000-4-2/4-4/4-5 compliance | Validated for ±8 kV contact / ±15 kV air ESD, 4 kV EFT bursts, and 42 Ω/12 Ω secondary lightning waveforms up to Class 4. |
| Low thermal resistance | 15 °C/W junction-to-lead enables efficient heat transfer to PCB copper, sustaining repeated 500 W pulses without derating. |
Applications
| Industrial PLC I/O Protection | Telecom DC Power Input |
|---|---|
Use Scenario: 24–48 V DC input stage of programmable logic controller modules exposed to field-wiring inductive kick and nearby lightning coupling. IC Role / Device Role / Timing Role: Unidirectional shunt TVS placed between power rail and chassis ground to clamp surges before reaching upstream DC-DC converters and microcontrollers. Use Value: 96.3 V clamping ensures downstream 50 V-rated input capacitors and LDOs remain within absolute maximum ratings during 1 kA 10/1000 µs events. |
Use Scenario: Primary overvoltage protection on −48 V telecom rectifier outputs feeding distributed power architecture boards. IC Role / Device Role / Timing Role: Standoff-rated TVS installed at board edge to absorb coupled surges from shared building grounding and cable plant transients. Use Value: 54 V VWM provides 6 V margin above nominal −48 V rail while maintaining <1 µA leakage to avoid affecting remote monitoring circuits. |
| Automotive Body Control Module | RS-485 Communication Line |
Use Scenario: 12 V battery-supplied body control unit subjected to load dump and ISO 7637-2 Pulse 5a transients. IC Role / Device Role / Timing Role: First-stage transient suppressor ahead of TVS arrays and polymeric PTCs to limit initial energy into secondary protection network. Use Value: 500 W peak power rating allows absorption of 100 ms load dump spikes without degradation, preserving long-term reliability. |
Use Scenario: Data line protection for industrial RS-485 transceivers operating in noisy factory environments with frequent ESD events. IC Role / Device Role / Timing Role: Low-capacitance unidirectional TVS placed differential-mode across A/B lines to suppress common-mode surges without distorting signal integrity. Use Value: Sub-100 ps response time ensures clamping occurs before transceiver input stages experience destructive overvoltage. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ54A | No "e3" RoHS suffix; SnPb terminations; otherwise identical VWM, VBR, VC, and PPP. | Restricted to legacy non-RoHS production; incompatible with lead-free assembly processes. | Select SMAJ54A only if SnPb soldering is mandated and environmental compliance is not required. |
| SMBJ54A | Same VWM/VBR/VC but 600 W PPP rating and DO-214AA (SMB) package - 2.5× larger footprint and higher thermal mass. | Better suited for higher-energy surge environments where PCB space permits larger package. | Choose SMBJ54A when system-level surge testing exceeds 500 W or thermal management requires lower junction temperature rise. |
Compared with SMAJ54E3/TR13, SMAJ54A lacks RoHS compliance and requires SnPb reflow, while SMBJ54A offers higher surge capacity in a physically larger package - making SMAJ54E3/TR13 optimal for space-constrained, lead-free industrial designs requiring certified 500 W protection.
Availability
SMAJ54E3/TR13 is available at Aetrix Electronics and suitable for industrial PLC I/O protection, telecom DC power input, and automotive body control module designs requiring stable component supply and full traceability through production lifecycles.
Supply support for SMAJ54E3/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 specifically for surface-mount transient suppression in harsh environments - balancing compact DO-214AC packaging, 500 W surge capability, and IEC-compliant performance for mission-critical power and interface protection.
FAQ
What is the clamping voltage of SMAJ54E3/TR13 at its rated peak pulse current?
The SMAJ54E3/TR13 has a maximum clamping voltage (VC) of 96.3 V at 5.2 A peak pulse current (IPP) under the standard 10/1000 µs waveform. This value is measured per Figure 2 in the official Microsemi datasheet MSC0270A and defines the upper voltage limit imposed on protected circuitry during surge events - critical for ensuring downstream components remain within their absolute maximum ratings.
Is SMAJ54E3/TR13 unidirectional or bidirectional?
SMAJ54E3/TR13 is a unidirectional TVS diode, indicated by the absence of "C" or "CA" in its part number suffix. Its cathode is marked by a band on the DO-214AC package, and it conducts only during positive transients relative to ground. Bidirectional variants (e.g., SMAJ54CA) are separate part numbers with symmetrical clamping in both polarities.
Does SMAJ54E3/TR13 meet IEC 61000-4-5 for secondary lightning protection?
Yes, SMAJ54E3/TR13 is validated for secondary lightning protection per IEC 61000-4-5 with both 42 Ω and 12 Ω source impedances. It supports Class 1–4 protection levels depending on system coordination - specifically Class 1 (42 Ω) and Class 2 (12 Ω) - as confirmed in the Microsemi application notes and test reports referenced in MSC0270A Rev L.
What is the package type and moisture sensitivity level of SMAJ54E3/TR13?
SMAJ54E3/TR13 uses the DO-214AC (SMA) surface-mount package with C-bend leads and void-free UL94V-0 epoxy body. Its moisture sensitivity level is MSL 1 per IPC/JEDEC J-STD-020B, meaning it can be stored indefinitely at ambient conditions without dry packing or baking prior to reflow soldering.
Can SMAJ54E3/TR13 be used in automotive applications?
Yes, SMAJ54E3/TR13 is qualified for automotive use in body electronics applications such as BCMs and lighting controllers. Its −65 °C to +150 °C operating temperature range, 500 W surge rating, and compliance with ISO 7637-2 Pulse 5a make it suitable for load dump and inductive switching protection - provided system-level coordination with upstream fuses and downstream TVS arrays is maintained.
SMAJ54E3/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):
- 54V
- Voltage - Breakdown (Min):
- 60V
- Voltage - Clamping (Max) @ Ipp:
- 96.3V
- Current - Peak Pulse (10/1000µs):
- 5.2A
- 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)
SMAJ54E3/TR13 FAQ
1.How can I place an order for SMAJ54E3/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAJ54E3/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 SMAJ54E3/TR13 reliable?
The price and inventory of SMAJ54E3/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMAJ54E3/TR13 is usually 5 days.
3.What payment methods are accepted for SMAJ54E3/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ54E3/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAJ54E3/TR13?
SMAJ54E3/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAJ54E3/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 SMAJ54E3/TR13?
For technical support, including SMAJ54E3/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ54E3/TR13 requirements.
6.How does Aetrix verify that SMAJ54E3/TR13 is sourced from the original manufacturer or authorized distributors?
All SMAJ54E3/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 SMAJ54E3/TR13 meets industry standards.
7.What is the process for return or replacement of SMAJ54E3/TR13?
All SMAJ54E3/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ54E3/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 SMAJ54E3/TR13 part is unused and in its original packaging.
Return procedure for SMAJ54E3/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMAJ54E3/TR13 Tags
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