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Microchip Technology SMAJ54AE3/TR13
- Part No.:
- SMAJ54AE3/TR13
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAJ54AE3/TR13.pdf
- Description:
- TVS DIODE 54VWM 87.1VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:4,595
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Product details
Overview
SMAJ54AE3/TR13 from Microsemi is a unidirectional surface-mount transient voltage suppressor (TVS) diode in DO-214AC (SMA) package, rated for 500 W peak pulse power at 10/1000 µs, with 54 V standoff voltage (VWM), 60 V minimum breakdown voltage (VBR), and 96.3 V maximum clamping voltage (VC) at 5.2 A peak pulse current - used for ESD/EFT protection on DC power rails and signal lines in industrial control and telecom interfaces.
For engineers reviewing the SMAJ54AE3/TR13 datasheet, SMAJ54AE3/TR13 pinout, SMAJ54AE3/TR13 application, or SMAJ54AE3/TR13 equivalent, key selection criteria include verified clamping performance under IEC61000-4-2/4-4/4-5, RoHS-compliant matte-tin plating, tape-and-reel packaging (TR13), and compatibility with standard SMA footprint per IPC/JEDEC J-STD-020B Level 1 moisture sensitivity.
Technical Context
This unidirectional TVS operates as a fast-acting shunt clamp: when reverse voltage exceeds VBR (60 V min), it avalanches to limit transient energy within 100 ps, clamping to ≤96.3 V at 5.2 A. Its low thermal resistance (15 °C/W junction-to-lead) enables reliable dissipation of 500 W surges without derating on FR4 boards using recommended pad layout.
Designed for secondary lightning protection per IEC61000-4-5 with 42 Ω source impedance (Class 1 up to SMAJ100A), it supports bidirectional variants via CA suffix but SMAJ54AE3/TR13 itself is unidirectional - cathode marked by band, forward surge rating 40 A (8.3 ms half-sine), and standby leakage <1 μA at 54 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 54 V - maximum continuous reverse operating voltage before clamping begins; sets safe margin above nominal 48 V DC rail. |
| VBR min @ IBR | 60 V @ 1 mA - guaranteed avalanche onset threshold; ensures predictable turn-on during transients. |
| VC @ IPP | 96.3 V @ 5.2 A - clamped voltage during 10/1000 µs surge; defines protected circuit's maximum stress level. |
| PPP | 500 W - peak pulse power handling capability; validates robustness against IEC61000-4-5 Class 1 surges. |
| ID @ VWM | <1 μA - ultra-low leakage at standoff voltage; prevents unnecessary power loss in battery-backed systems. |
| tclamp | <100 ps - theoretical response time; enables effective suppression of ESD events per IEC61000-4-2 Level 4 (15 kV air). |
| Package | DO-214AC (SMA) - industry-standard surface-mount outline with wide leads for thermal conduction and mechanical stability. |
Pinout & Package
DO-214AC (SMA) package: void-free thermosetting epoxy body (UL94V-0), C-bend (modified J-bend) leads with RoHS-compliant annealed matte-tin plating, cathode indicated by band. Weight: 0.064 g. Moisture sensitivity level: IPC/JEDEC J-STD-020B Level 1 - no dry pack required.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side connection to protected line | Connected to signal/power line requiring overvoltage protection; referenced to ground via PCB trace. |
| Cathode | High-side connection to ground reference | Marked by band; provides low-impedance path to system ground during transient events. |
Key Features
| Feature | Design Value |
|---|---|
| 500 W peak pulse power | Validated at 10/1000 µs waveform - meets IEC61000-4-5 Class 1 secondary lightning immunity requirements. |
| RoHS-compliant "e3" suffix | Matte-tin plating per MIL-STD-750 Method 2026 - ensures solderability and eliminates lead-based finishes. |
| Tape-and-reel packaging (TR13) | 2500 units per 13-inch reel per EIA-481-1-A - optimized for automated SMT placement and inventory management. |
| Unidirectional configuration | Cathode-band marking - simplifies polarity verification during assembly and avoids reverse-bias failure in DC applications. |
| IEC61000-4-2/4-4 compliance | ESD (±15 kV air) and EFT (±4 kV) protection validated - reduces need for external filtering in industrial I/O designs. |
Applications
| Industrial PLC I/O Protection | Telecom Power Rail Clamping |
|---|---|
Use Scenario: 24–48 V DC input/output terminals in programmable logic controllers exposed to inductive switching noise and field wiring surges. IC Role / Device Role / Timing Role: Unidirectional shunt TVS placed between terminal and ground to clamp transients before they reach isolation amplifiers or microcontroller GPIOs. Use Value: Limits voltage excursion to ≤96.3 V during 500 W surges, preserving integrity of downstream 5 V or 3.3 V logic interfaces. |
Use Scenario: -48 V telecom power distribution board where hot-swap events and load-dump transients threaten DC-DC converters. IC Role / Device Role / Timing Role: Primary overvoltage clamp on input rail, coordinated with upstream fuses and downstream LC filters. Use Value: Responds in <100 ps to suppress 10/1000 µs surges, preventing latch-up or burnout in buck controller ICs. |
| Automotive Body Control Module | Medical Equipment Signal Line Guarding |
Use Scenario: 12 V auxiliary power inputs in BCMs subjected to ISO 7637-2 pulse 1/2a/3a and load-dump conditions. IC Role / Device Role / Timing Role: Secondary-level TVS after primary TVS or fuse, protecting CAN transceivers and LIN bus drivers. Use Value: Withstands 40 A forward surge (8.3 ms half-sine), enabling robust operation during battery disconnection events. |
Use Scenario: Analog sensor inputs (e.g., temperature, pressure) in patient-monitoring devices requiring IEC 60601-1-2 ESD immunity. IC Role / Device Role / Timing Role: Low-leakage (≤1 μA) shunt device on signal path to ground, minimizing impact on precision measurement accuracy. Use Value: Clamps ESD pulses to ≤96.3 V while adding negligible capacitance (<100 pF), preserving signal bandwidth. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ54AHE3/TR13 | Same electrical specs; "H" denotes high-reliability screening per MIL-PRF-19500 JANTX level (100% temp cycling, HTRB, surge test). | Required for aerospace/avionics programs demanding extended qualification beyond commercial grade. | Select SMAJ54AHE3/TR13 only if JANTX screening documentation and traceability are contractually mandated. |
| SMAJ54A-Q | Automotive-grade variant (AEC-Q101 qualified); identical VWM/VC/PPP, but with enhanced process controls and lot-level PPAP support. | Targeted at automotive ECUs needing certified reliability data and change notification protocols. | Choose SMAJ54A-Q for Tier 1 automotive BOMs; SMAJ54AE3/TR13 remains optimal for industrial/commercial cost-sensitive designs. |
Compared with SMAJ54AHE3/TR13 and SMAJ54A-Q, the SMAJ54AE3/TR13 delivers full 500 W transient suppression performance at lower cost and broader availability, making it ideal for non-aerospace and non-automotive applications where commercial-grade qualification suffices.
Availability
SMAJ54AE3/TR13 is available at Aetrix Electronics and suitable for industrial automation, telecom infrastructure, and medical instrumentation requiring stable component supply with RoHS-compliant, tape-and-reel packaging and IEC61000-4-5 Class 1 surge immunity.
Supply support for SMAJ54AE3/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 defense, aerospace, and industrial markets.
The SMAJ series was developed to deliver robust, surface-mount transient suppression for harsh-environment electronics - emphasizing fast response, repeatable clamping, and compatibility with automated manufacturing.
FAQ
What is the clamping voltage of SMAJ54AE3/TR13 at its rated peak pulse current?
The SMAJ54AE3/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 and guaranteed per Microsemi's MSC0270A datasheet Rev L, ensuring protected circuits remain below critical voltage thresholds during surge events.
Is SMAJ54AE3/TR13 unidirectional or bidirectional, and how is polarity identified?
SMAJ54AE3/TR13 is a unidirectional TVS diode. Polarity is identified by a cathode band on the package body - the banded end connects to system ground, while the unbanded end connects to the protected line. Bidirectional versions use a "CA" suffix (e.g., SMAJ54CAE3/TR13) and lack polarity marking.
Does SMAJ54AE3/TR13 meet IEC61000-4-5 for lightning surge immunity?
Yes, SMAJ54AE3/TR13 is rated for secondary lightning protection per IEC61000-4-5 with 42 Ω source impedance up to Class 1 (SMAJ5.0 to SMAJ100A). Its 500 W peak pulse power and 96.3 V clamping voltage ensure compliance when implemented with proper PCB layout and grounding per Microsemi's recommended footprint.
What does the "TR13" suffix indicate in SMAJ54AE3/TR13?
The "TR13" suffix indicates tape-and-reel packaging: 2500 units per 13-inch reel, conforming to EIA-481-1-A standards. This format supports high-speed SMT placement and simplifies inventory handling - distinct from "TR" (750/unit 7-inch reel) or bulk packaging options.
Can SMAJ54AE3/TR13 be used in place of SMAJ54A without design changes?
Yes - SMAJ54AE3/TR13 is functionally and mechanically identical to SMAJ54A, with the addition of RoHS-compliant matte-tin plating ("e3") and tape-and-reel packaging ("TR13"). No PCB layout, schematic, or thermal design modifications are required for drop-in replacement in existing designs.
SMAJ54AE3/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:
- 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)
SMAJ54AE3/TR13 FAQ
1.How can I place an order for SMAJ54AE3/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAJ54AE3/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 SMAJ54AE3/TR13 reliable?
The price and inventory of SMAJ54AE3/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMAJ54AE3/TR13 is usually 5 days.
3.What payment methods are accepted for SMAJ54AE3/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ54AE3/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAJ54AE3/TR13?
SMAJ54AE3/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAJ54AE3/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 SMAJ54AE3/TR13?
For technical support, including SMAJ54AE3/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ54AE3/TR13 requirements.
6.How does Aetrix verify that SMAJ54AE3/TR13 is sourced from the original manufacturer or authorized distributors?
All SMAJ54AE3/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 SMAJ54AE3/TR13 meets industry standards.
7.What is the process for return or replacement of SMAJ54AE3/TR13?
All SMAJ54AE3/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ54AE3/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 SMAJ54AE3/TR13 part is unused and in its original packaging.
Return procedure for SMAJ54AE3/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMAJ54AE3/TR13 Tags
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