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Microchip Technology SMAJ64AE3/TR13
- Part No.:
- SMAJ64AE3/TR13
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAJ64AE3/TR13.pdf
- Description:
- TVS DIODE 64VWM 103VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:7,948
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Product details
Overview
SMAJ64AE3/TR13 from Microsemi is a unidirectional surface-mount transient voltage suppressor (TVS) designed for primary and secondary lightning surge protection in DC power rails and signal lines. It features a 64 V standoff voltage (VWM), 71.1 V minimum breakdown voltage (VBR), 114 V maximum clamping voltage (VC) at 4.4 A peak pulse current, and 500 W peak pulse power rating per 10/1000 µs waveform - deployed in industrial power supplies and telecom interface circuits.
For engineers reviewing the SMAJ64AE3/TR13 datasheet, SMAJ64AE3/TR13 pinout, SMAJ64AE3/TR13 application, or SMAJ64AE3/TR13 equivalent, this part serves as a RoHS-compliant, tape-and-reel packaged TVS diode with verified IEC61000-4-2/4-4/4-5 compliance, DO-214AC package compatibility, and validated clamping performance under repetitive surge stress.
Technical Context
This unidirectional TVS operates with <100 ps theoretical response time and delivers precise overvoltage clamping during fast transients such as ESD (±15 kV contact, ±20 kV air per IEC61000-4-2) and EFT (40 A, 5/50 ns bursts per IEC61000-4-4). Its junction-to-lead thermal resistance of 15 °C/W enables reliable power dissipation in compact layouts.
The device supports steady-state power dissipation of 1.56 W at 25 °C ambient and 5 W at 75 °C lead temperature when mounted on FR4 with recommended footprint. Its cathode band marking and C-bend leads ensure correct orientation and solderability per MIL-STD-750 Method 2026.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Standoff Voltage) | 64 V - Maximum continuous reverse operating voltage before conduction begins; defines safe DC rail margin. |
| VBR (Min Breakdown) | 71.1 V @ 1 mA - Confirmed avalanche onset threshold; ensures predictable turn-on above nominal rail. |
| VC (Clamping Voltage) | 114 V @ 4.4 A (10/1000 µs) - Peak voltage seen by protected circuit during worst-case surge; limits downstream stress. |
| PPP (Peak Pulse Power) | 500 W - Sustained energy absorption capability for transient suppression without failure. |
| IPP (Peak Pulse Current) | 4.4 A - Maximum non-destructive surge current handled at rated clamping voltage and waveform. |
| ID (Standby Leakage) | 4.9 µA @ VWM - Negligible quiescent current draw; avoids battery drain or signal path loading. |
| TJ Range | –65 °C to +150 °C - Full operational reliability across extended industrial and automotive ambient conditions. |
Pinout & Package
Package: DO-214AC (SMA), surface-mount, void-free thermosetting epoxy body meeting UL94V-0; moisture sensitivity level (MSL) 1 - no dry pack required per J-STD-020B.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Surge return path to ground | Low-impedance connection for transient current diversion; must be routed to low-inductance ground plane. |
| Cathode (banded end) | Protected line input | Connected to line being safeguarded (e.g., +12 V rail); clamps to anode when VAK exceeds VBR. |
Key Features
| Feature | Design Value |
|---|---|
| RoHS-compliant "e3" plating | Matte-tin annealed terminations compliant with JEDEC J-STD-020B; eliminates lead-based solder concerns. |
| Tape-and-reel packaging (TR13) | 2500 units per 13-inch reel per EIA-481-1-A; optimized for automated SMT placement and traceable lot control. |
| IEC61000-4-5 secondary lightning rating | Validated for Class 1 (42 Ω source) up to SMAJ100A series - confirms robustness against induced surges in AC/DC power inputs. |
| Fast clamping response | <100 ps theoretical turn-on - prevents sub-nanosecond ESD events from propagating to sensitive ICs. |
| Thermal performance | 15 °C/W junction-to-lead resistance - enables sustained operation at 5 W with proper PCB copper area (1 oz FR4). |
Applications
| Industrial Power Input Protection | Telecom Data Line Surge Suppression |
|---|---|
Use Scenario: 24–48 V DC input stage of programmable logic controllers (PLCs) exposed to load dump and inductive switching transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between input rail and chassis ground to clamp positive-going surges while blocking reverse leakage. Use Value: Limits transient voltage to ≤114 V, protecting downstream DC-DC converters and microcontrollers rated for 36 V absolute max. |
Use Scenario: RS-485 transceiver bus lines in outdoor base stations subjected to lightning-induced coupling. IC Role / Device Role / Timing Role: Paired unidirectional TVS diodes (one per line) referenced to common ground to suppress differential and common-mode surges. Use Value: Maintains signal integrity by clamping transients within 100 ps, preventing latch-up or damage to half-duplex transceivers. |
| Automotive Body Control Module (BCM) | Medical Equipment DC Power Rails |
Use Scenario: 12 V battery-fed power distribution in BCMs where ISO 7637-2 pulse 1/2a/3a immunity is required. IC Role / Device Role / Timing Role: Primary TVS on main power entry point, coordinated with fuse and LC filter to meet OEM surge test requirements. Use Value: Withstands 500 W pulses without degradation, enabling single-device compliance with GMW3172 and Ford ES-XW7T-1A278-AC. |
Use Scenario: Isolated 5 V/3.3 V auxiliary rails in patient-connected diagnostic devices requiring IEC 60601-1-2 4th ed. ESD/EFT immunity. IC Role / Device Role / Timing Role: Final-stage TVS on low-noise LDO outputs to prevent transient coupling into analog front-ends. Use Value: 4.9 µA standby leakage preserves battery life in portable ultrasound units; UL94V-0 package meets flammability safety mandates. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ64AHE3/TR13 | Same electrical specs but with high-reliability screening (HTRB, surge, temp cycling) per MIL-PRF-19500 JANTX; higher cost. | Required for aerospace avionics or military-grade systems needing extended qualification testing. | Select SMAJ64AHE3/TR13 only if full MIL-spec screening documentation and traceability are contractually mandated. |
| SMBJ64A-E3/52 | Same VWM/VC but 600 W PPP, DO-214AA package (larger footprint), 10% higher IPP (4.8 A). | Better suited for higher-energy surge environments where board space allows larger package. | Choose SMBJ64A-E3/52 when system-level testing reveals marginal margin with 500 W rating or when thermal derating requires lower junction temperature rise. |
Compared with SMAJ64AE3/TR13, SMAJ64AHE3/TR13 adds qualification rigor without changing clamping behavior, while SMBJ64A-E3/52 trades compactness for higher surge headroom - both require layout review due to differing footprints and thermal profiles.
Availability
SMAJ64AE3/TR13 is available at Aetrix Electronics and suitable for industrial power input protection, telecom data line surge suppression, and automotive body control module designs requiring stable component supply and RoHS-compliant TVS solutions.
Supply support for SMAJ64AE3/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 for ruggedized surface-mount transient suppression in harsh environments - emphasizing fast response, repeatable clamping, and long-term reliability under repetitive surge stress.
FAQ
What is the clamping voltage of SMAJ64AE3/TR13 at its rated peak pulse current?
The SMAJ64AE3/TR13 has a maximum clamping voltage (VC) of 114 V when subjected to a 10/1000 µs waveform with a peak pulse current (IPP) of 4.4 A. This value is measured and guaranteed per the manufacturer's datasheet and defines the upper voltage limit imposed on protected circuitry during surge events - critical for ensuring downstream ICs remain within their absolute maximum ratings.
Is SMAJ64AE3/TR13 unidirectional or bidirectional, and how is polarity identified?
SMAJ64AE3/TR13 is a unidirectional TVS diode, indicated by the absence of "C" or "CA" in its part number suffix. Polarity is marked by a cathode band on the device body - the banded end connects to the line being protected, while the anode connects to ground. This configuration blocks reverse current during normal operation and conducts only during positive overvoltage transients.
Does SMAJ64AE3/TR13 meet IEC61000-4-5 for secondary lightning protection?
Yes, SMAJ64AE3/TR13 is validated for secondary lightning protection per IEC61000-4-5 with 42 Ω source impedance up to Class 1 (covers SMAJ5.0 to SMAJ100A variants). Its 500 W peak pulse power rating and 114 V clamping voltage enable compliance in AC/DC power input stages where induced surges from nearby lightning strikes must be safely diverted.
What is the package type and moisture sensitivity level (MSL) of SMAJ64AE3/TR13?
SMAJ64AE3/TR13 uses the DO-214AC (SMA) surface-mount package with C-bend leads and matte-tin RoHS-compliant plating. Its moisture sensitivity level is MSL 1 per IPC/JEDEC J-STD-020B - meaning it can be stored indefinitely at ambient conditions without baking prior to reflow, simplifying manufacturing logistics and reducing handling risk.
Can SMAJ64AE3/TR13 replace SMAJ64A in existing designs?
Yes, SMAJ64AE3/TR13 is a direct replacement for SMAJ64A with identical electrical specifications and DO-214AC mechanical form factor. The "e3" suffix denotes RoHS-compliant terminations, and "TR13" specifies 2500-unit tape-and-reel packaging - both enhancements that maintain full compatibility with legacy layouts and assembly processes.
SMAJ64AE3/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):
- 64V
- Voltage - Breakdown (Min):
- 71.1V
- Voltage - Clamping (Max) @ Ipp:
- 103V
- Current - Peak Pulse (10/1000µs):
- 4.9A
- 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)
SMAJ64AE3/TR13 FAQ
1.How can I place an order for SMAJ64AE3/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAJ64AE3/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 SMAJ64AE3/TR13 reliable?
The price and inventory of SMAJ64AE3/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMAJ64AE3/TR13 is usually 5 days.
3.What payment methods are accepted for SMAJ64AE3/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ64AE3/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAJ64AE3/TR13?
SMAJ64AE3/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAJ64AE3/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 SMAJ64AE3/TR13?
For technical support, including SMAJ64AE3/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ64AE3/TR13 requirements.
6.How does Aetrix verify that SMAJ64AE3/TR13 is sourced from the original manufacturer or authorized distributors?
All SMAJ64AE3/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 SMAJ64AE3/TR13 meets industry standards.
7.What is the process for return or replacement of SMAJ64AE3/TR13?
All SMAJ64AE3/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ64AE3/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 SMAJ64AE3/TR13 part is unused and in its original packaging.
Return procedure for SMAJ64AE3/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMAJ64AE3/TR13 Tags
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Diodes Incorporated
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Diodes Incorporated
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onsemi
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Diodes Incorporated
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Nexperia USA Inc.
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Diodes Incorporated
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