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Microchip Technology SMAJ10AE3/TR13
- Part No.:
- SMAJ10AE3/TR13
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAJ10AE3/TR13.pdf
- Description:
- TVS DIODE 10VWM 17VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:2,900
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Product details
Overview
SMAJ10AE3/TR13 from Microsemi is a unidirectional surface-mount transient voltage suppressor (TVS) designed for primary and secondary lightning surge protection, ESD/EFT immunity per IEC61000-4-2/4-4, and inductive switching transient suppression in DC power rails and signal lines. It features a 10 V working standoff voltage (VWM), 11.1 V minimum breakdown voltage (VBR), 17.0 V maximum clamping voltage (VC) at 29.4 A peak pulse current, and 500 W peak pulse power rating at 10/1000 µs waveform.
For engineers reviewing the SMAJ10AE3/TR13 datasheet, SMAJ10AE3/TR13 pinout, SMAJ10AE3/TR13 application, or SMAJ10AE3/TR13 equivalent, this device is selected for robust overvoltage protection in automotive body electronics, industrial PLC I/O modules, telecom power interfaces, and embedded DC supply rails where fast response (<100 ps theoretical), low leakage (<1 µA @ VWM), and RoHS-compliant surface-mount reliability are required.
Technical Context
The SMAJ10AE3/TR13 operates as a unidirectional avalanche diode with cathode-band polarity marking, optimized for clamping transients on positive-rail-to-ground paths. Its junction-to-lead thermal resistance is 15 °C/W, enabling effective heat dissipation during repetitive 500 W surges when mounted on FR4 with recommended footprint.
It complies with IEC61000-4-5 secondary lightning testing at 42 Ω source impedance (Class 4: up to SMAJ12A/CA) and 12 Ω source impedance (Class 2: up to SMAJ16A/CA), and meets IEC61000-4-2 Level 4 (±15 kV contact / ±20 kV air) and IEC61000-4-4 Level 4 (±2 kV) standards without external circuitry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Standoff) | 10 V - Maximum continuous reverse voltage before significant leakage; sets operating margin for 12 V DC systems. |
| VBR (Min @ IBR) | 11.1 V @ 1 mA - Guaranteed avalanche initiation threshold; ensures predictable turn-on during overvoltage events. |
| VC @ IPP | 17.0 V @ 29.4 A - Clamped voltage during 10/1000 µs surge; limits downstream IC stress to safe levels. |
| PPP | 500 W - Peak pulse power handling capability; supports high-energy transients in industrial environments. |
| ID @ VWM | <1 µA - Ultra-low standby leakage; avoids battery drain or signal integrity issues in always-on circuits. |
| Package | DO-214AC (SMA) - Standardized surface-mount outline with wide leads for thermal and mechanical robustness. |
| tCLAMP | <100 ps theoretical - Sub-nanosecond response enables protection of high-speed logic and analog front-ends. |
Pinout & Package
Package: DO-214AC (SMA), void-free thermosetting epoxy case with matte-tin-plated C-bend leads, moisture sensitivity level 1 (no dry pack required), weight 0.064 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side connection (cathode-banded side) | Connected to ground or return path; completes clamping loop during positive transients. |
| Cathode | High-side connection (marked by band) | Connected to protected line (e.g., 12 V rail); conducts surge current to ground when VIN exceeds VBR. |
Key Features
| Feature | Design Value |
|---|---|
| RoHS-compliant "e3" suffix | Lead-free matte-tin plating per JEDEC J-STD-020B, compatible with standard reflow profiles. |
| Tape-and-reel packaging | TR13 variant supplied on 13-inch reels (2500 pcs), optimized for automated SMT placement. |
| IEC61000-4-5 Class 4 compliance | Validated for secondary lightning surges up to 12 A (42 Ω source) on 10 V systems without derating. |
| Low thermal resistance | 15 °C/W junction-to-lead enables sustained operation under repeated 500 W pulses with minimal temperature rise. |
| Steady-state power rating | 1.56 W at 25 °C ambient (FR4, 1 oz Cu) - supports continuous biasing in monitoring circuits. |
Applications
| Automotive Body Control Module (BCM) Power Input | Industrial PLC Digital Input Protection |
|---|---|
Use Scenario: 12 V battery-supplied BCM microcontroller power rail exposed to load-dump and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS clamps positive transients to ≤17.0 V, preventing damage to LDOs and MCU VDD pins. Use Value: Enables compliance with ISO 7637-2 Pulse 1/2a/5a without additional filtering; eliminates need for series resistors or RC snubbers. | Use Scenario: 24 V DC digital input channel receiving signals from field sensors in factory automation. IC Role / Device Role / Timing Role: Standoff-rated TVS absorbs EFT bursts (IEC61000-4-4) and inductive kickback from solenoid drivers. Use Value: Maintains signal integrity during 4 kV EFT testing while holding leakage below 1 µA to avoid false triggering of optocouplers. |
| Telecom DC Power Interface | Embedded System USB VBUS Line Protection |
Use Scenario: -48 V telecom power feed entering remote radio unit with sensitive RF front-end ICs. IC Role / Device Role / Timing Role: Bidirectional variants (e.g., SMAJ10CA) used in pairs; SMAJ10AE3/TR13 applied for positive-rail-only clamping. Use Value: Limits clamping voltage to 17.0 V during 10/1000 µs surges, protecting PMICs rated for 20 V absolute max. | Use Scenario: USB 2.0 host port VBUS line (5 V nominal) subjected to ESD events during hot-plug insertion. IC Role / Device Role / Timing Role: Fast-response TVS shunts ±15 kV HBM ESD (IEC61000-4-2) away from USB transceiver ESD diodes. Use Value: Sub-100 ps response prevents voltage overshoot beyond 5.5 V, preserving USB PHY eye diagram integrity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ10AHE3/TR13 | Same electrical specs; "H" suffix indicates enhanced reliability screening per MIL-PRF-19500 JANTX level. | Required for aerospace/avionics designs needing 100% temperature cycling (-55°C to +125°C) and HTRB validation. | Select SMAJ10AHE3/TR13 only if qualification to MIL-PRF-19500 is mandated; otherwise SMAJ10AE3/TR13 suffices for commercial/industrial use. |
| SMBJ10A-E3/52 | Same VWM, VBR, VC; SMB package (DO-214AA) has 600 W PPP rating but larger footprint and higher thermal resistance (20 °C/W). | Preferred where higher surge margin is needed and PCB space allows larger package; not drop-in due to different pad layout. | Choose SMBJ10A-E3/52 only when 600 W headroom is critical and layout revision is acceptable; SMAJ10AE3/TR13 offers tighter integration in space-constrained designs. |
Compared with SMAJ10AHE3/TR13, the SMAJ10AE3/TR13 omits military-grade screening but retains identical clamping performance and RoHS compliance; versus SMBJ10A-E3/52, it trades 100 W peak power for smaller DO-214AC footprint and lower thermal resistance-ideal for high-density industrial PCBs.
Availability
SMAJ10AE3/TR13 is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC I/O protection, and telecom DC power interface designs requiring stable component supply across multi-year production cycles.
Supply support for SMAJ10AE3/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 specifically for surface-mount transient suppression in harsh electromagnetic environments, targeting applications demanding fast response, repeatable clamping, and long-term stability under thermal cycling.
FAQ
What is the clamping voltage of SMAJ10AE3/TR13 at its rated peak pulse current?
The SMAJ10AE3/TR13 has a maximum clamping voltage (VC) of 17.0 V at 29.4 A peak pulse current (IPP) under the standard 10/1000 µs waveform. This value is guaranteed across temperature and lifetime, ensuring consistent overvoltage protection for downstream 12 V logic and power ICs without exceeding their absolute maximum ratings.
Is SMAJ10AE3/TR13 unidirectional or bidirectional, and how is polarity identified?
SMAJ10AE3/TR13 is a unidirectional TVS diode, with polarity indicated by a cathode band on the package body. The anode connects to ground and the cathode to the protected line. Bidirectional versions use a "C" or "CA" suffix (e.g., SMAJ10CA); SMAJ10AE3/TR13 must not be substituted for bidirectional use without circuit redesign.
Does SMAJ10AE3/TR13 meet IEC61000-4-5 secondary lightning requirements?
Yes, SMAJ10AE3/TR13 is validated for IEC61000-4-5 secondary lightning testing with 42 Ω source impedance up to Class 4 (SMAJ12A/CA limit) and 12 Ω source impedance up to Class 2 (SMAJ16A/CA limit). Its 500 W rating and 17.0 V clamping ensure compliance without external impedance matching in standard 12 V DC systems.
What is the maximum steady-state power dissipation for SMAJ10AE3/TR13 on a standard FR4 board?
When mounted on FR4 with 1 oz copper and Microsemi's recommended footprint, SMAJ10AE3/TR13 dissipates up to 1.56 W at 25 °C ambient temperature (TA) or 5 W at 75 °C lead temperature (TL). This enables reliable operation in continuously biased protection circuits such as always-on sensor power rails.
How does the "TR13" suffix affect packaging and assembly of SMAJ10AE3/TR13?
"TR13" denotes tape-and-reel packaging on 13-inch reels containing 2500 units, conforming to EIA-481-1-A standards. This format supports high-speed pick-and-place assembly, ensures component orientation consistency (cathode band aligned per reel direction), and simplifies inventory management for medium-to-high volume production runs using SMAJ10AE3/TR13.
SMAJ10AE3/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):
- 10V
- Voltage - Breakdown (Min):
- 11.1V
- Voltage - Clamping (Max) @ Ipp:
- 17V
- Current - Peak Pulse (10/1000µs):
- 29.4A
- 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)
SMAJ10AE3/TR13 FAQ
1.How can I place an order for SMAJ10AE3/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAJ10AE3/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 SMAJ10AE3/TR13 reliable?
The price and inventory of SMAJ10AE3/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMAJ10AE3/TR13 is usually 5 days.
3.What payment methods are accepted for SMAJ10AE3/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ10AE3/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAJ10AE3/TR13?
SMAJ10AE3/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAJ10AE3/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 SMAJ10AE3/TR13?
For technical support, including SMAJ10AE3/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ10AE3/TR13 requirements.
6.How does Aetrix verify that SMAJ10AE3/TR13 is sourced from the original manufacturer or authorized distributors?
All SMAJ10AE3/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 SMAJ10AE3/TR13 meets industry standards.
7.What is the process for return or replacement of SMAJ10AE3/TR13?
All SMAJ10AE3/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ10AE3/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 SMAJ10AE3/TR13 part is unused and in its original packaging.
Return procedure for SMAJ10AE3/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMAJ10AE3/TR13 Tags
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