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Microchip Technology SMAJ6.5AE3/TR13
- Part No.:
- SMAJ6.5AE3/TR13
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAJ6.5AE3/TR13.pdf
- Description:
- TVS DIODE 6.5VWM 11.2VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:2,429
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Product details
Overview
SMAJ6.5AE3/TR13 from Microsemi is a unidirectional surface-mount transient voltage suppressor (TVS) designed for primary overvoltage protection of sensitive ICs and power rails. It features a 6.5 V working peak standoff voltage (VWM), 7.22 V minimum breakdown voltage (VBR) at 10 mA, 11.2 V maximum clamping voltage (VC) at 44.7 A peak pulse current, and 500 W peak pulse power rating per 10/1000 µs waveform - deployed in industrial power supplies and automotive ECUs.
For engineers reviewing the SMAJ6.5AE3/TR13 datasheet, SMAJ6.5AE3/TR13 pinout, SMAJ6.5AE3/TR13 application, or SMAJ6.5AE3/TR13 equivalent, key selection criteria include clamping performance under IEC61000-4-5 secondary lightning surge (42 Ω source), low standby leakage (<500 µA @ VWM), RoHS-compliant matte-tin plating, and compatibility with standard DO-214AC footprint layouts.
Technical Context
This unidirectional TVS operates as a fast-acting shunt clamp during voltage transients, leveraging silicon avalanche diode physics to divert surge energy to ground before downstream components experience damaging overvoltage. Its <100 ps theoretical response time enables effective suppression of ESD per IEC61000-4-2 (±8 kV contact) and EFT per IEC61000-4-4 (±2 kV).
The device is rated for 500 W peak pulse power at 25 °C with 0.01% duty cycle, and maintains stable operation across -65 °C to +150 °C ambient range. Thermal resistance is 15 °C/W junction-to-lead when soldered to recommended FR4 footprint, supporting reliable power dissipation in compact board designs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 6.5 V - Maximum continuous reverse operating voltage before conduction begins; sets upper limit for protected circuit's normal operating rail. |
| VBR min @ IBR | 7.22 V @ 10 mA - Minimum voltage at which avalanche breakdown initiates; ensures predictable turn-on margin above VWM. |
| VC @ IPP | 11.2 V @ 44.7 A - Clamped voltage during 10/1000 µs surge; defines worst-case overvoltage seen by downstream ICs. |
| PPP | 500 W - Peak pulse power handling capability; determines survivability against standardized lightning-induced surges (IEC61000-4-5). |
| ID @ VWM | <500 µA - Reverse leakage current at rated standoff voltage; ensures minimal quiescent power loss and no interference with low-power sensor rails. |
| Package | DO-214AC (SMA) - Industry-standard surface-mount outline with wide leads for thermal dissipation and mechanical robustness on PCBs. |
Pinout & Package
Package: DO-214AC (SMA), void-free thermosetting epoxy body meeting UL94V-0; cathode indicated by band on body; moisture sensitivity level 1 (no dry pack required).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Surge return path | Connected to system ground or low-impedance reference; completes shunt path for transient current during clamping. |
| Cathode | Protected line connection | Connected to the voltage rail requiring protection (e.g., 5 V supply); conducts avalanche current when VIN exceeds VBR. |
Key Features
| Feature | Design Value |
|---|---|
| RoHS-compliant matte-tin plating | Enables lead-free reflow soldering per JEDEC J-STD-020B without intermetallic degradation or dewetting risk. |
| 100% temperature cycling screening option (MA prefix) | Validates reliability over -55 °C to +125 °C (10 cycles), critical for avionics and downhole industrial deployments. |
| IEC61000-4-5 Class 4 compliance (42 Ω source) | Guarantees protection against secondary lightning surges up to 12 VWM devices - SMAJ6.5AE3/TR13 meets this class with margin. |
| Low thermal resistance (15 °C/W j-to-lead) | Supports sustained surge handling without thermal runaway when mounted on standard FR4 with recommended pad layout. |
Applications
| Industrial Power Supply Input Protection | Automotive Body Control Module (BCM) CAN Bus Line Protection |
|---|---|
Use Scenario: 12 V DC input stage of programmable logic controller (PLC) power module exposed to load dump and inductive switching noise. IC Role / Device Role / Timing Role: Unidirectional shunt TVS placed between input rail and chassis ground to clamp transients before they reach DC-DC converter ICs. Use Value: Limits voltage excursion to ≤11.2 V during 44.7 A surge, preventing latch-up or gate oxide damage in buck controller MOSFETs and error amplifiers. |
Use Scenario: CAN_H/CAN_L lines in BCM subjected to ESD events and battery reverse-polarity transients during service. IC Role / Device Role / Timing Role: Paired unidirectional TVS diodes (one per line) referenced to ground, providing asymmetric clamping aligned with CAN common-mode voltage window. Use Value: Sub-100 ps response ensures clamping occurs before CAN transceiver input stages experience destructive overvoltage, preserving signal integrity and fault tolerance. |
| Medical Patient Monitor Sensor Interface Protection | Telecom DSL Line Card Surge Protection |
Use Scenario: Low-voltage analog front-end (AFE) of ECG electrode interface, where microvolt-level signals must remain undisturbed by ESD coupling. IC Role / Device Role / Timing Role: TVS placed at connector entry point to shunt ESD energy away from precision op-amps and ADC inputs. Use Value: 500 µA max leakage at 6.5 V avoids DC offset errors in high-gain instrumentation amplifiers, while 11.2 V clamping prevents saturation or input-stage damage. |
Use Scenario: DSL line card exposed to induced surges from nearby AC mains or lightning coupling into twisted-pair copper lines. IC Role / Device Role / Timing Role: Primary protection element on line-side transformer secondary, clamping common-mode surges before hybrid coupler and line driver ICs. Use Value: 500 W peak power rating sustains multiple IEC61000-4-5 42 Ω surges without degradation, maintaining bit-error-rate (BER) stability in ADSL2+ links. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ6.5AHE3/TR13 | Same electrical specs but with enhanced screening per MIL-PRF-19500 JANTX; higher reliability testing including HTRB and surge validation. | Required for military/aerospace programs needing qualified high-reliability components; not needed for commercial industrial use. | Select SMAJ6.5AHE3/TR13 only if program mandates MIL-spec qualification; otherwise SMAJ6.5AE3/TR13 delivers identical protection performance at lower cost. |
| SMBJ6.5A-E3/52 | Same VWM, VBR, VC, but 600 W PPP rating and SMB (DO-214AA) package - 2.5 mm wider body than SMA. | Higher surge margin suits harsher environments (e.g., railway signaling); larger footprint requires PCB redesign. | Choose SMBJ6.5A-E3/52 only when 600 W headroom is explicitly required and board space allows SMB package; SMAJ6.5AE3/TR13 fits tighter layouts with proven 500 W capability. |
Compared with SMAJ6.5AHE3/TR13, the SMAJ6.5AE3/TR13 omits MIL-qualified screening but retains full electrical equivalence for commercial-grade surge protection; versus SMBJ6.5A-E3/52, it trades 100 W peak power for smaller DO-214AC footprint and lower thermal mass - ideal for space-constrained consumer and industrial PCBs.
Availability
SMAJ6.5AE3/TR13 is available at Aetrix Electronics and suitable for industrial power supplies, automotive body control modules, medical sensor interfaces, and telecom line cards requiring stable component supply with RoHS compliance and tape-and-reel packaging.
Supply support for SMAJ6.5AE3/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 developed specifically for surface-mount transient suppression in space- and thermally constrained applications, emphasizing fast response, repeatable clamping, and robust package construction for automated assembly.
FAQ
What is the clamping voltage of SMAJ6.5AE3/TR13 under a 10/1000 µs surge?
The SMAJ6.5AE3/TR13 has a maximum clamping voltage (VC) of 11.2 V when subjected to its rated peak pulse current of 44.7 A using the standard 10/1000 µs waveform. This value is measured per Figure 2 in the Microsemi MSC0270A datasheet and defines the upper voltage limit imposed on protected circuits during surge events.
Is SMAJ6.5AE3/TR13 unidirectional or bidirectional?
SMAJ6.5AE3/TR13 is a unidirectional TVS diode, as confirmed by the "A" suffix in its part number and absence of "C" or "CA". It conducts only in reverse bias during overvoltage events and must be oriented with cathode toward the protected line - unlike bidirectional variants such as SMAJ6.5CAE3/TR13.
Does SMAJ6.5AE3/TR13 meet IEC61000-4-5 for lightning surge protection?
Yes, SMAJ6.5AE3/TR13 is rated for IEC61000-4-5 secondary lightning surge protection with 42 Ω source impedance at Class 4 level (up to 12 VWM devices). Its 500 W peak pulse power and 11.2 V clamping ensure compliance when applied per Microsemi's recommended layout and grounding practices.
What is the maximum steady-state power dissipation of SMAJ6.5AE3/TR13?
The SMAJ6.5AE3/TR13 dissipates up to 5 W continuously when lead temperature (TL) is maintained at 75 °C, or 1.56 W at ambient temperature (TA) of 25 °C on a standard FR4 board with recommended footprint. These values reflect thermal limits defined in the Microsemi MSC0270A datasheet under "Steady-State Power Dissipation".
Can SMAJ6.5AE3/TR13 be used in place of SMAJ6.5A without the "e3" and "TR13" suffixes?
Yes - SMAJ6.5AE3/TR13 is functionally identical to SMAJ6.5A in electrical performance and package. The "e3" denotes RoHS-compliant matte-tin plating, and "TR13" specifies 2500-unit tape-and-reel packaging on a 13-inch reel; both are process/package enhancements, not functional changes to the SMAJ6.5AE3/TR13 device itself.
SMAJ6.5AE3/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):
- 6.5V
- Voltage - Breakdown (Min):
- 7.22V
- Voltage - Clamping (Max) @ Ipp:
- 11.2V
- Current - Peak Pulse (10/1000µs):
- 44.7A
- 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)
SMAJ6.5AE3/TR13 FAQ
1.How can I place an order for SMAJ6.5AE3/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAJ6.5AE3/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 SMAJ6.5AE3/TR13 reliable?
The price and inventory of SMAJ6.5AE3/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMAJ6.5AE3/TR13 is usually 5 days.
3.What payment methods are accepted for SMAJ6.5AE3/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ6.5AE3/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAJ6.5AE3/TR13?
SMAJ6.5AE3/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAJ6.5AE3/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 SMAJ6.5AE3/TR13?
For technical support, including SMAJ6.5AE3/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ6.5AE3/TR13 requirements.
6.How does Aetrix verify that SMAJ6.5AE3/TR13 is sourced from the original manufacturer or authorized distributors?
All SMAJ6.5AE3/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 SMAJ6.5AE3/TR13 meets industry standards.
7.What is the process for return or replacement of SMAJ6.5AE3/TR13?
All SMAJ6.5AE3/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ6.5AE3/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 SMAJ6.5AE3/TR13 part is unused and in its original packaging.
Return procedure for SMAJ6.5AE3/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMAJ6.5AE3/TR13 Tags
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