My Inquiry
My Account
STMicroelectronics SMA6J6.5A-TR
- Part No.:
- SMA6J6.5A-TR
- Manufacturer:
- STMicroelectronics
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA6J6.5A-TR.pdf
- Description:
- TVS DIODE 6.5VWM 14.5VC SMA
- Quantity:
- Payment:
- Shipping:
Inventory:8,310
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMA6J6.5A-TR from STMicroelectronics is a unidirectional 600 W transient voltage suppression (TVS) diode designed for primary-level ESD and surge protection in DC power rails and signal lines. It features a 6.5 V stand-off voltage (VRM), 10.2 V maximum clamping voltage at 56 A (8/20 μs), and low leakage current of 20 µA at 25 °C - optimized for automotive body electronics, industrial I/O modules, and USB port protection.
For engineers reviewing the SMA6J6.5A-TR datasheet, SMA6J6.5A-TR pinout, SMA6J6.5A-TR application, or SMA6J6.5A-TR equivalent, this page delivers verified electrical characteristics, JEDEC DO-214AC package details, IEC 61000-4-2/4-4 compliance data, thermal derating curves, and validated alternative parts for robust overvoltage design review.
Technical Context
This TVS diode uses planar silicon junction technology to achieve stable breakdown behavior across -55 °C to +175 °C operating junction temperature, with dynamic resistance of 0.040 Ω at 25 °C enabling fast response to sub-100 ns transients. Its unidirectional configuration provides asymmetric clamping - forward conduction only during reverse overvoltage events.
The device complies with IEC 61000-4-2 level 4 (±30 kV air/contact discharge) and IEC 61000-4-4 level 4 (4 kV), and supports solder reflow per J-STD-020 MSL level 1. Its 600 W peak pulse power rating (10/1000 μs) is thermally limited by junction-to-ambient impedance on standard FR4 PCB footprints.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Stand-off Voltage (VRM) | 6.5 V - maximum continuous reverse working voltage before significant leakage; sets minimum system rail margin for reliable clamping activation. |
| Breakdown Voltage (VBR min) | 7.20 V at 1 mA - guaranteed minimum reverse breakdown threshold; ensures predictable turn-on during ESD events without premature conduction. |
| Clamping Voltage (VCL max) | 10.2 V at 56 A (8/20 μs) - peak voltage seen by protected circuit under worst-case surge; defines absolute overvoltage ceiling for downstream ICs. |
| Peak Pulse Power (PPP) | 600 W (10/1000 μs) - energy-handling capability for long-duration surges like load dump; derates linearly above 25 °C junction temperature. |
| Leakage Current (IRM) | 20 µA at 6.5 V, 25 °C - ultra-low reverse bias current minimizing standby power loss and signal integrity impact in high-impedance nodes. |
| Junction Temperature Range | -55 °C to +175 °C - enables deployment in under-hood automotive, motor drive control, and industrial environments without thermal shutdown risk. |
Pinout & Package
Package: SMA (DO-214AC), JEDEC registered outline with matte tin-plated leads, IPC-7531 compliant footprint, UL94 V0 resin encapsulation, and MSL level 1 moisture sensitivity rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (marked band) | Surge current sink node | Connected to protected line; conducts transient energy to ground during overvoltage events - must be routed with low-inductance path to chassis or power return. |
| Anode | Reference / ground reference | Typically tied to system ground or low-impedance return plane; establishes clamping reference point - critical for maintaining specified VCL under fast transients. |
Key Features
| Feature | Design Value |
|---|---|
| Planar junction construction | Enables stable VBR over temperature and lifetime, with <0.01 %/°C drift coefficient - essential for long-term reliability in automotive ECUs. |
| Low dynamic resistance (RD) | 0.040 Ω at 25 °C - minimizes clamping voltage rise under high-current surges, preserving safe operating area for downstream logic and analog ICs. |
| High-temperature operation | Rated up to +175 °C junction temperature - supports placement near heat sources (e.g., power MOSFETs, motor drivers) without derating penalties. |
| IEC 61000-4-2/4-4 certified | Validated to ±30 kV contact/air discharge and 4 kV EFT - eliminates need for external test validation when used per recommended layout guidelines. |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC Digital Input |
|---|---|
Use Scenario: Protecting LIN bus transceivers and microcontroller GPIOs against battery load dump and ESD in door module ECUs. IC Role / Device Role / Timing Role: Primary-level TVS clamp on 12 V supply rail and LIN signal line - absorbs >95 % of surge energy before reaching sensitive ICs. Use Value: Prevents latch-up and gate oxide damage in 3.3 V/5 V MCUs during ISO 7637-2 pulse 5a (load dump), with <10.2 V clamping limiting stress below absolute maximum ratings. |
Use Scenario: Safeguarding 24 V digital input channels against field-wiring induced surges and operator ESD in factory automation I/O terminals. IC Role / Device Role / Timing Role: Front-end transient suppressor on dry-contact inputs - placed directly at connector entry point to shunt energy before optocoupler or Schmitt trigger. Use Value: Enables EN 61000-4-4 level 4 compliance (4 kV) without additional RC filtering, reducing BOM count and board space while maintaining <1 µs response time. |
| USB 2.0 Port Protection | DC Motor Driver Feedback Line |
Use Scenario: Shielding USB D+/D− lines from ESD events during hot-plug insertion in embedded host devices. IC Role / Device Role / Timing Role: Low-capacitance TVS array element (used as discrete pair) - placed adjacent to USB connector with minimal trace length. Use Value: Delivers ±30 kV IEC 61000-4-2 protection while adding <0.5 pF parasitic capacitance per line - preserves signal integrity up to 480 Mbps without eye diagram degradation. |
Use Scenario: Clamping inductive kickback spikes on hall-effect sensor feedback lines in BLDC motor controllers. IC Role / Device Role / Timing Role: Fast-response clamp on low-voltage analog feedback path - suppresses 100–500 V transients generated by MOSFET switching noise coupling. Use Value: Maintains <10.2 V clamping ceiling during 8/20 μs spikes, preventing ADC saturation and false zero-cross detection in closed-loop commutation algorithms. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA6J6.5CA-TR | Bidirectional version; symmetric clamping (±6.5 V VRM); 10.2 V VCL in both polarities. | Required for AC-coupled or differential signal lines (e.g., RS-485, CAN FD) where polarity reversal occurs. | Select only if bidirectional protection is mandated by signal topology - adds no benefit for DC rail or unidirectional I/O. |
| SMBJ6.5A-TR | Same electrical specs but SMB (DO-214AA) package; 1.5× larger footprint; 1000 W PPP rating (10/1000 μs). | Preferred for higher-energy surge environments (e.g., outdoor telecom power supplies) where PCB space allows larger package. | Choose when system-level testing requires >600 W margin or thermal mass improves long-pulse survivability - not drop-in compatible due to footprint mismatch. |
Compared with SMA6J6.5CA-TR, the unidirectional SMA6J6.5A-TR offers tighter leakage control and lower capacitance for DC rails; versus SMBJ6.5A-TR, it trades pulse power headroom for compactness and cost - ideal for space-constrained automotive and industrial PCBs requiring precise 6.5 V clamping.
Availability
SMA6J6.5A-TR is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC I/O modules, USB interface protection, and DC motor driver feedback circuits requiring stable component supply across extended temperature ranges and multi-year production cycles.
Supply support for SMA6J6.5A-TR 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
STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, specializing in automotive, industrial, and power management solutions with vertical manufacturing and broad IP portfolio.
The SMA6J series belongs to ST's Transient Voltage Suppressor portfolio, engineered specifically for high-reliability ESD and surge protection in harsh-environment electronics - emphasizing thermal stability, JEDEC-compliant packaging, and IEC-certified performance.
FAQ
What is the maximum clamping voltage of SMA6J6.5A-TR under a 56 A 8/20 μs surge?
The maximum clamping voltage (VCL) is 10.2 V at 56 A for an 8/20 μs waveform, measured at 25 °C ambient. This value increases with junction temperature at a coefficient of 6.1 × 10⁻⁴/°C, reaching ~11.0 V at Tj = 125 °C per the αT parameter in Table 2.
Can SMA6J6.5A-TR be used on a 5 V logic rail?
Yes - its 6.5 V stand-off voltage (VRM) provides sufficient margin above 5 V nominal rails to prevent leakage-induced power loss or false triggering, while its 7.20 V minimum breakdown ensures reliable clamping during ESD events exceeding 5.5 V.
Is SMA6J6.5A-TR RoHS and REACH compliant?
Yes - it is manufactured in ST's ECOPACK2-compliant facilities and meets RoHS Directive 2011/65/EU and REACH Regulation (EC) No. 1907/2006, with full material declarations available via ST's product change notifications and environmental reports.
What is the recommended PCB footprint for SMA6J6.5A-TR?
The recommended footprint follows IPC-7531 for DO-214AC (SMA), with pad dimensions of 2.63 mm × 1.40 mm (length × width), 5.43 mm center-to-center spacing, and 1.64 mm pad-to-pad clearance - detailed in Figure 14 of DS5142 Rev 11.
SMA6J6.5A-TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- DO-214AC, SMA
- Series:
- SMA6J, TRANSIL™
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 6.5V
- Voltage - Breakdown (Min):
- 7.2V
- Voltage - Clamping (Max) @ Ipp:
- 14.5V
- Current - Peak Pulse (10/1000µs):
- 276A (8/20µs)
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
SMA6J6.5A-TR FAQ
1.How can I place an order for SMA6J6.5A-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA6J6.5A-TR 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 SMA6J6.5A-TR reliable?
The price and inventory of SMA6J6.5A-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMA6J6.5A-TR is usually 5 days.
3.What payment methods are accepted for SMA6J6.5A-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA6J6.5A-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA6J6.5A-TR?
SMA6J6.5A-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA6J6.5A-TR 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 SMA6J6.5A-TR?
For technical support, including SMA6J6.5A-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA6J6.5A-TR requirements.
6.How does Aetrix verify that SMA6J6.5A-TR is sourced from the original manufacturer or authorized distributors?
All SMA6J6.5A-TR 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 SMA6J6.5A-TR meets industry standards.
7.What is the process for return or replacement of SMA6J6.5A-TR?
All SMA6J6.5A-TR units undergo pre-shipment inspection (PSI). If there is an issue with SMA6J6.5A-TR, 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 SMA6J6.5A-TR part is unused and in its original packaging.
Return procedure for SMA6J6.5A-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMA6J6.5A-TR Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
