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Microchip Technology SMAJ5.0AE3/TR13
- Part No.:
- SMAJ5.0AE3/TR13
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAJ5.0AE3/TR13.pdf
- Description:
- TVS DIODE 5VWM 9.2VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:4,584
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Product details
Overview
SMAJ5.0AE3/TR13 from Microsemi is a unidirectional surface-mount transient voltage suppressor (TVS) designed for primary overvoltage protection of DC power rails and signal lines. It features a 5.0 V working standoff voltage (VWM), 6.4 V minimum breakdown voltage (VBR), 9.2 V maximum clamping voltage (VC) at 54.3 A peak pulse current, and 500 W peak pulse power rating per 10/1000 µs waveform-used in automotive infotainment power inputs and industrial sensor interfaces.
For engineers reviewing the SMAJ5.0AE3/TR13 datasheet, SMAJ5.0AE3/TR13 pinout, SMAJ5.0AE3/TR13 application, or SMAJ5.0AE3/TR13 equivalent, key selection criteria include clamping voltage margin vs. protected IC's absolute maximum rating, IEC61000-4-2/4-4/4-5 compliance level, unidirectional polarity requirement, and DO-214AC package thermal performance on FR4 PCBs.
Technical Context
This TVS operates as a silicon avalanche diode with fast response (<100 ps theoretical turn-on time) and low dynamic impedance to limit transient energy before it damages downstream components. Its unidirectional configuration provides forward conduction capability (40 A surge current, 3.5 V max forward voltage) while blocking reverse leakage (<800 µA at 5.0 V).
The device is rated for -65°C to +150°C operating temperature, exhibits 15°C/W junction-to-lead thermal resistance, and delivers stable clamping performance across its full pulse width range (10–1000 µs) with <0.01% impulse duty factor-enabling robust protection in repetitive switching environments like motor drive gate drivers and PLC I/O modules.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 5.0 V - Maximum continuous reverse voltage before significant leakage; sets upper limit for protected line's nominal DC voltage. |
| VBR min | 6.4 V @ 10 mA - Minimum voltage at which avalanche conduction begins; ensures reliable triggering above normal operating transients. |
| VC | 9.2 V @ 54.3 A - Maximum voltage seen by protected circuit during 10/1000 µs surge; must be below downstream IC's absolute max rating. |
| PPP | 500 W - Peak power dissipation capability under standardized surge; defines maximum transient energy absorption capacity. |
| IPP | 54.3 A - Peak current supported at VC; determines minimum surge source impedance compatibility (e.g., 42 Ω IEC61000-4-5 Class 4). |
| ID | <800 µA @ 5.0 V - Reverse standby leakage; low enough to avoid loading 5 V logic or analog supply rails. |
| TJ range | -65°C to +150°C - Full industrial/automotive ambient operating envelope; validated for extended thermal cycling and HTRB screening. |
Pinout & Package
Package: DO-214AC (SMA), surface-mount, void-free thermosetting epoxy case with tin-lead or RoHS-compliant matte-tin plating; cathode indicated by band; moisture sensitivity level 1 (no dry pack required).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction path | Connects to protected line's ground or return path; enables 40 A half-sine surge current handling in forward direction. |
| Cathode | Avalanche clamping node | Connects to protected line's positive rail; clamps transients to ≤9.2 V when reverse voltage exceeds 6.4 V. |
Key Features
| Feature | Design Value |
|---|---|
| IEC61000-4-2/4-4/4-5 compliance | Validated for ESD (±8 kV contact), EFT (±2 kV), and secondary lightning (Class 4, 42 Ω source) protection without external filtering. |
| RoHS-compliant "e3" suffix | Lead-free matte-tin plating meets JEDEC J-STD-020B Level 1 moisture sensitivity; no bake required prior to reflow. |
| DO-214AC footprint | Standardized 7.0 × 6.2 mm outline with 3.99–4.50 mm lead width; compatible with automated pick-and-place and reflow profiles up to 260°C/10 s. |
| Low clamping ratio | VC/VBR = 9.2/6.4 ≈ 1.44 - Tighter than typical TVS devices, minimizing overvoltage stress on 5 V tolerant ICs. |
Applications
| Automotive Infotainment Power Input | Industrial Sensor Signal Line |
|---|---|
Use Scenario: 5 V supply rail feeding touchscreen controller and audio codec in vehicle head unit exposed to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Unidirectional TVS placed between 5 V rail and chassis ground to clamp transients before they reach sensitive analog/digital ICs. Use Value: Clamps 500 W surges to ≤9.2 V within <100 ps, preventing latch-up or oxide breakdown in 5 V CMOS devices. | Use Scenario: 4–20 mA current loop interface connecting pressure sensor to PLC analog input module in factory automation. IC Role / Device Role / Timing Role: TVS mounted across loop terminals to absorb induced RF and EFT bursts coupled onto long field wiring. Use Value: Limits transient voltage to 9.2 V while maintaining sub-1 µA leakage at 5 V, preserving loop accuracy and avoiding false triggers. |
| USB Host Port Protection | DC-DC Converter Feedback Path |
Use Scenario: VBUS line of USB 2.0 host port subjected to ESD events during cable insertion and hot-plug operations. IC Role / Device Role / Timing Role: Unidirectional TVS connected between VBUS and GND to shunt ESD current away from USB transceiver and power switch. Use Value: Responds in <100 ps to ±8 kV contact discharge per IEC61000-4-2, clamping VBUS to safe levels without disrupting 500 mA charging current. | Use Scenario: Voltage feedback divider network of isolated 5 V buck converter supplying FPGA core logic, vulnerable to coupling from primary-side switching noise. IC Role / Device Role / Timing Role: TVS placed across feedback resistor to prevent transient-induced regulation error or output overvoltage. Use Value: Maintains <800 µA leakage at 5 V, ensuring feedback accuracy remains unaffected during normal operation while clamping spikes to 9.2 V. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ5.0AHE3/TR13 | Same electrical specs but with high-reliability screening (HTRB, surge, thermal cycling); higher cost and longer lead time. | Required for avionics or military-grade designs needing 100% temperature cycling (-55°C to +125°C, 10X) and post-test parameter verification. | Select SMAJ5.0AHE3/TR13 only if MIL-PRF-19500 JANTX or avionics-grade qualification is mandated. |
| P6SMB5.0A | Same DO-214AA package, 5.0 V VWM, but lower 600 W peak power rating and 9.6 V VC at 62.8 A; slightly larger thermal resistance (20°C/W). | Acceptable for less demanding consumer or commercial applications where 500 W margin is not critical and 0.4 V higher clamping is tolerable. | Choose P6SMB5.0A only if cost sensitivity outweighs need for lowest possible clamping voltage and highest surge margin. |
Compared with SMAJ5.0AE3/TR13, SMAJ5.0AHE3/TR13 adds screening rigor without changing clamping behavior, while P6SMB5.0A trades 0.4 V higher clamping and reduced thermal efficiency for broader distributor availability and lower unit cost.
Availability
SMAJ5.0AE3/TR13 is available at Aetrix Electronics and suitable for automotive infotainment systems, industrial sensor interfaces, and USB host port protection requiring stable component supply across multi-year production cycles.
Supply support for SMAJ5.0AE3/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 ICs, discrete protection devices, and timing solutions for aerospace, defense, and industrial markets.
The SMAJ series was engineered specifically for surface-mount transient suppression in harsh environments, emphasizing low clamping ratio, repeatable surge endurance, and compatibility with automated manufacturing processes.
FAQ
What is the clamping voltage of SMAJ5.0AE3/TR13 at its rated peak pulse current?
The SMAJ5.0AE3/TR13 has a maximum clamping voltage (VC) of 9.2 V at 54.3 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 represents the upper voltage limit imposed on the protected circuit during worst-case surge conditions. The SMAJ5.0AE3/TR13 maintains this clamping performance across its full operating temperature range.
Is SMAJ5.0AE3/TR13 RoHS compliant and what does the "e3" suffix indicate?
Yes, SMAJ5.0AE3/TR13 is RoHS compliant-the "e3" suffix explicitly denotes annealed matte-tin plating per JEDEC J-STD-020B Level 1 moisture sensitivity, eliminating the need for dry packing or baking before reflow. The device meets lead-free soldering requirements with a maximum solder temperature of 260°C for 10 seconds. This compliance is verified in the Microsemi MSC0270A datasheet and applies to all units shipped with the "e3" designation in the part number.
How does SMAJ5.0AE3/TR13 differ from bidirectional variants like SMAJ5.0CAE3/TR13?
SMAJ5.0AE3/TR13 is unidirectional, meaning it conducts only in the forward direction and clamps reverse transients-ideal for DC power rail protection where polarity is fixed. In contrast, SMAJ5.0CAE3/TR13 is bidirectional, offering symmetrical clamping for AC or floating signal lines. The unidirectional SMAJ5.0AE3/TR13 supports 40 A forward surge current and has lower capacitance, while the bidirectional version halves effective capacitance at zero bias but lacks forward conduction capability.
What IEC standards does SMAJ5.0AE3/TR13 meet for electromagnetic immunity?
SMAJ5.0AE3/TR13 is specified to meet IEC61000-4-2 (ESD ±8 kV contact), IEC61000-4-4 (EFT ±2 kV), and IEC61000-4-5 (secondary lightning) with 42 Ω source impedance up to Class 4 (SMAJ5.0 to SMAJ12A). These compliance levels are documented in the Applications/Benefits section of the MSC0270A datasheet and confirmed via characterization testing-not derived from generic family claims. The SMAJ5.0AE3/TR13 achieves this through sub-100 ps response time and controlled avalanche dynamics.
Can SMAJ5.0AE3/TR13 be used in place of through-hole P5KE5.0A for space-constrained designs?
Yes-SMAJ5.0AE3/TR13 serves as the surface-mount functional equivalent of the axial-lead P5KE5.0A, sharing identical VWM (5.0 V), VBR (6.4 V), and VC (9.2 V) specifications, though with lower peak power (500 W vs. 600 W). Its DO-214AC package enables high-density PCB layouts and automated assembly, making it suitable for compact consumer electronics and portable industrial equipment where board space and manufacturing efficiency are critical. The SMAJ5.0AE3/TR13 retains the same protection function while reducing footprint by >70%.
SMAJ5.0AE3/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):
- 5V
- Voltage - Breakdown (Min):
- 6.4V
- Voltage - Clamping (Max) @ Ipp:
- 9.2V
- Current - Peak Pulse (10/1000µs):
- 54.3A
- 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)
SMAJ5.0AE3/TR13 FAQ
1.How can I place an order for SMAJ5.0AE3/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAJ5.0AE3/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 SMAJ5.0AE3/TR13 reliable?
The price and inventory of SMAJ5.0AE3/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMAJ5.0AE3/TR13 is usually 5 days.
3.What payment methods are accepted for SMAJ5.0AE3/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ5.0AE3/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAJ5.0AE3/TR13?
SMAJ5.0AE3/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAJ5.0AE3/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 SMAJ5.0AE3/TR13?
For technical support, including SMAJ5.0AE3/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ5.0AE3/TR13 requirements.
6.How does Aetrix verify that SMAJ5.0AE3/TR13 is sourced from the original manufacturer or authorized distributors?
All SMAJ5.0AE3/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 SMAJ5.0AE3/TR13 meets industry standards.
7.What is the process for return or replacement of SMAJ5.0AE3/TR13?
All SMAJ5.0AE3/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ5.0AE3/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 SMAJ5.0AE3/TR13 part is unused and in its original packaging.
Return procedure for SMAJ5.0AE3/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMAJ5.0AE3/TR13 Tags
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Diodes Incorporated
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Diodes Incorporated
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