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Microchip Technology SMAJ6.5CE3/TR13
- Part No.:
- SMAJ6.5CE3/TR13
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAJ6.5CE3/TR13.pdf
- Description:
- TVS DIODE 6.5VWM 12.3VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:8,928
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Product details
Overview
SMAJ6.5CE3/TR13 from Microsemi is a unidirectional surface-mount transient voltage suppressor (TVS) diode designed for primary and secondary surge protection in DC power rails and signal lines. It features a 6.5 V working peak standoff voltage (VWM), 7.22 V minimum breakdown voltage (VBR) at 10 mA, 12.3 V maximum clamping voltage (VC) at 40.7 A peak pulse current, and 500 W peak pulse power rating per 10/1000 µs waveform - enabling robust ESD, EFT, and lightning-induced transient suppression in industrial control and automotive electronics.
For engineers reviewing the SMAJ6.5CE3/TR13 datasheet, SMAJ6.5CE3/TR13 pinout, SMAJ6.5CE3/TR13 application, or SMAJ6.5CE3/TR13 equivalent, this device delivers verified IEC 61000-4-2 (±30 kV contact), IEC 61000-4-4 (40 A), and IEC 61000-4-5 (Class 4, 42 Ω source) compliance with sub-100 ps response time, RoHS-compliant matte-tin plating, and tape-and-reel packaging optimized for automated SMT assembly.
Technical Context
This unidirectional TVS operates as a voltage-clamped shunt protector: under normal bias it presents <1 µA leakage at 6.5 V, then rapidly avalanches at ≥7.22 V to clamp transients to ≤12.3 V while diverting up to 40.7 A of 10/1000 µs surge current. Its DO-214AC (SMA) package provides low thermal resistance (15 °C/W junction-to-lead) and supports steady-state dissipation of 5 W at 75 °C lead temperature.
The device is rated for operation from –65 °C to +150 °C, features void-free UL94V-0 epoxy encapsulation, and uses C-bend leads with annealed matte-tin plating compliant with MIL-STD-750 Method 2026. Polarity is marked by a cathode band; no marking on bidirectional variants.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 6.5 V - Maximum continuous reverse operating voltage before avalanche conduction begins; sets upper limit for protected circuit's DC rail. |
| VBR min @ IBR | 7.22 V @ 10 mA - Minimum voltage at which device enters controlled avalanche; ensures reliable triggering above system noise margin. |
| VC @ IPP | 12.3 V @ 40.7 A - Clamped voltage during 10/1000 µs surge; defines worst-case overvoltage seen by downstream ICs. |
| PPP | 500 W - Peak pulse power handling capability; enables protection against high-energy transients like lightning surges. |
| IPP | 40.7 A - Peak surge current supported at VC = 12.3 V; determines minimum trace width and grounding path design. |
| ID @ VWM | <1 µA - Reverse leakage at rated standoff voltage; ensures negligible power loss and signal integrity in standby. |
| tRESPONSE | <100 ps - Theoretical response time from 0 V to VBR; guarantees immunity to nanosecond-scale ESD events. |
Pinout & Package
Package: DO-214AC (SMA), surface-mount, void-free UL94V-0 epoxy body with C-bend (modified J-bend) leads. Cathode indicated by band on body; anode unmarked. Moisture sensitivity level (MSL) = 1 - no dry pack required per IPC/JEDEC J-STD-020B.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unmarked end) | Low-side reference node | Connected to ground or common return path; forms low-impedance surge sink during clamping. |
| Cathode (banded end) | High-side transient input | Connected to protected line (e.g., 5 V rail); avalanche conduction occurs from cathode to anode when VIN exceeds VBR. |
Key Features
| Feature | Design Value |
|---|---|
| 500 W peak pulse power (10/1000 µs) | Enables single-device protection against IEC 61000-4-5 Class 4 secondary lightning surges (42 Ω source). |
| RoHS-compliant "e3" suffix | Matte-tin plating meets EU RoHS Directive 2011/65/EU and JEDEC J-STD-020B MSL Level 1 requirements. |
| Tape-and-reel packaging ("TR13") | 2500 units per 13-inch reel per EIA-481-1-A standard; compatible with high-speed pick-and-place SMT equipment. |
| –65 °C to +150 °C operating range | Supports deployment in under-hood automotive, industrial motor drives, and outdoor telecom infrastructure. |
| Sub-100 ps theoretical response | Guarantees effective suppression of human-body-model (HBM) and machine-model (MM) ESD events per IEC 61000-4-2. |
Applications
| Industrial PLC I/O Protection | Automotive Body Control Module (BCM) |
|---|---|
Use Scenario: 24 V DC input channels on programmable logic controller (PLC) modules exposed to relay coil flyback and field wiring surges. IC Role / Device Role / Timing Role: Unidirectional shunt TVS placed between channel input and chassis ground to clamp transients before they reach isolation amplifiers or microcontroller GPIOs. Use Value: Limits induced overvoltage to ≤12.3 V during 40.7 A surges, preventing latch-up or gate oxide damage in downstream analog front-end ICs. |
Use Scenario: LIN bus data line and 12 V power rail in BCM units subjected to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Standoff-rated TVS on LIN transceiver VCC supply and signal pins to absorb repetitive switching transients without degradation. Use Value: Maintains <1 µA leakage at 6.5 V nominal rail, ensuring minimal quiescent current impact while clamping ISO 7637-2 Pulse 1 (−150 V, 50 ms) energy. |
| Medical Patient Monitor Power Input | Point-of-Sale (POS) Terminal USB Port |
Use Scenario: AC/DC adapter output stage feeding isolated DC-DC converters in Class II medical devices requiring IEC 60601-1 creepage/clearance compliance. IC Role / Device Role / Timing Role: Primary-level TVS on secondary-side 5 V/12 V rails to suppress conducted surges coupled via transformer parasitics or shared grounds. Use Value: Withstands 500 W surges without parametric shift, supporting 2× MDD (Mean Time to Failure) safety validation per IEC 60601-1 Clause 8.8.3.3. |
Use Scenario: USB 2.0 VBUS and D+/D− lines in retail POS terminals exposed to ESD from cashier gloves and cable hot-plug events. IC Role / Device Role / Timing Role: Low-capacitance unidirectional TVS on VBUS and bidirectional variants on data lines to meet ±15 kV IEC 61000-4-2 contact discharge. Use Value: Sub-100 ps response ensures clamping before USB PHY transceivers enter destructive overvoltage states during fast-rising ESD strikes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ6.5A-E3/5A (Vishay) | Same VWM (6.5 V), identical DO-214AC package, but VC = 11.2 V @ 44.7 A and lower leakage (≤0.5 µA). | Better clamping performance for ultra-sensitive 3.3 V logic interfaces; tighter VBR tolerance (5% vs. Microsemi's typical 10%). | Select when lower clamping voltage and tighter VBR distribution are critical for margin-constrained designs. |
| 1.5SMC6.8A (ON Semiconductor) | Higher VWM (6.8 V), same 500 W rating, but VC = 10.5 V @ 47.6 A and 1.5 kW peak power derated to 500 W at 10/1000 µs. | Marginally higher standoff allows use on 6.5 V rails with tighter tolerance; slightly faster response due to smaller junction capacitance. | Choose when board space permits larger SMC package and design requires marginally improved clamping or extended lifetime under repeated surges. |
Compared with SMAJ6.5CE3/TR13, SMAJ6.5A-E3/5A offers superior clamping voltage and tighter VBR control for precision protection, while 1.5SMC6.8A trades package size for enhanced surge margin and lower VC - making each suitable for distinct layout and reliability priorities.
Availability
SMAJ6.5CE3/TR13 is available at Aetrix Electronics and suitable for industrial automation, automotive electronics, and medical device applications requiring stable component supply, RoHS compliance, and validated IEC 61000-4-x transient immunity.
Supply support for SMAJ6.5CE3/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, RF, and radiation-hardened components for aerospace, defense, and industrial markets.
The SMAJ series was engineered specifically for surface-mount transient suppression in harsh environments - delivering 500 W surge capability, wide temperature operation, and MIL-qualified screening options for mission-critical systems.
FAQ
What does the "C" in SMAJ6.5CE3/TR13 indicate?
The "C" suffix denotes unidirectional polarity - meaning SMAJ6.5CE3/TR13 conducts only in reverse bias during avalanche, with cathode marked by a band. This distinguishes it from bidirectional variants (e.g., SMAJ6.5CAE3/TR13) that protect both polarities. The "E3" confirms RoHS-compliant matte-tin plating, and "TR13" specifies 2500-unit tape-and-reel packaging on a 13-inch reel.
Is SMAJ6.5CE3/TR13 suitable for protecting 5 V logic circuits?
Yes - SMAJ6.5CE3/TR13 has a 6.5 V working peak standoff voltage (VWM), providing ~1.5 V margin above a nominal 5 V rail while remaining below the absolute maximum ratings of most 5 V CMOS and TTL ICs. Its 12.3 V clamping voltage ensures downstream devices see no more than 12.3 V during a 40.7 A surge, preserving functional integrity when paired with appropriate series impedance.
Does SMAJ6.5CE3/TR13 meet IEC 61000-4-5 Class 4 requirements?
Yes - SMAJ6.5CE3/TR13 is explicitly rated for IEC 61000-4-5 secondary lightning protection with 42 Ω source impedance at Class 4 (up to 12 A test current). Its 500 W peak pulse power and 40.7 A IPP at 12.3 V clamping enable compliance when applied per standard layout guidelines, including short ground paths and adequate PCB copper area for thermal dissipation.
What is the thermal resistance of SMAJ6.5CE3/TR13, and how does it affect layout?
SMAJ6.5CE3/TR13 has a junction-to-lead thermal resistance of 15 °C/W and junction-to-ambient resistance of 80 °C/W on FR4 with 1 oz Cu and recommended footprint. To maintain reliability under repeated surges, PCB layout must include ≥25 mm² of 1 oz Cu connected directly to both leads - especially the cathode - to avoid exceeding 150 °C junction temperature during 500 W pulse events.
Can SMAJ6.5CE3/TR13 replace SMAJ6.5A in existing designs?
Yes - SMAJ6.5CE3/TR13 and SMAJ6.5A share identical electrical specifications (VWM, VBR, VC, IPP), DO-214AC package dimensions, and pinout. The "E3" suffix adds RoHS-compliant plating, and "TR13" confirms tape-and-reel packaging; no PCB or schematic changes are required for drop-in replacement in legacy designs qualifying to the original SMAJ6.5A specification.
SMAJ6.5CE3/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:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 6.5V
- Voltage - Breakdown (Min):
- 7.22V
- Voltage - Clamping (Max) @ Ipp:
- 12.3V
- Current - Peak Pulse (10/1000µs):
- 40.7A
- 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)
SMAJ6.5CE3/TR13 FAQ
1.How can I place an order for SMAJ6.5CE3/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAJ6.5CE3/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 SMAJ6.5CE3/TR13 reliable?
The price and inventory of SMAJ6.5CE3/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMAJ6.5CE3/TR13 is usually 5 days.
3.What payment methods are accepted for SMAJ6.5CE3/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ6.5CE3/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAJ6.5CE3/TR13?
SMAJ6.5CE3/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAJ6.5CE3/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 SMAJ6.5CE3/TR13?
For technical support, including SMAJ6.5CE3/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ6.5CE3/TR13 requirements.
6.How does Aetrix verify that SMAJ6.5CE3/TR13 is sourced from the original manufacturer or authorized distributors?
All SMAJ6.5CE3/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 SMAJ6.5CE3/TR13 meets industry standards.
7.What is the process for return or replacement of SMAJ6.5CE3/TR13?
All SMAJ6.5CE3/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ6.5CE3/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 SMAJ6.5CE3/TR13 part is unused and in its original packaging.
Return procedure for SMAJ6.5CE3/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMAJ6.5CE3/TR13 Tags
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