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STMicroelectronics SMA6J154A-TR
- Part No.:
- SMA6J154A-TR
- Manufacturer:
- STMicroelectronics
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA6J154A-TR.pdf
- Description:
- TVS DIODE 154VWM 265VC SMA
- Quantity:
- Payment:
- Shipping:
Inventory:3,318
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Product details
Overview
SMA6J154A-TR from STMicroelectronics is a unidirectional 600 W transient voltage suppression (TVS) diode designed for IEC 61000-4-2 ESD and IEC 61000-4-4 electrical fast transient protection in power rails and signal lines. It features a 15 V stand-off voltage (VRM), 23.6 V clamping voltage (VCL) at 25.1 A peak pulse current (IPP), and operates up to 175 °C junction temperature. Used in industrial power supplies, automotive body control modules, and telecom interface protection.
For engineers reviewing the SMA6J154A-TR datasheet, SMA6J154A-TR pinout, SMA6J154A-TR application, or SMA6J154A-TR equivalent, key selection criteria include clamping performance under 10/1000 µs surge, low leakage (<0.2 µA at 25 °C), JEDEC DO-214AC (SMA) package compatibility, and IEC 61000-4-2 level 4 compliance (30 kV air/contact discharge).
Technical Context
This TVS diode employs planar silicon technology to achieve stable breakdown behavior and low dynamic resistance (RD = 0.206 Ω at 25 °C), enabling precise clamping during fast transients. Its unidirectional configuration supports DC-biased lines where reverse conduction must be blocked.
The device meets J-STD-020 MSL Level 1 moisture sensitivity and UL94 V0 flammability requirements, with matte tin-plated leads compliant to JESD 22-B102 E3 and MIL-STD-750 Method 2026. Thermal impedance is optimized for FR4 PCBs with recommended IPC 7531 footprint.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Stand-off Voltage (VRM) | 15 V - Maximum continuous reverse operating voltage before clamping initiates |
| Clamping Voltage (VCL) | 23.6 V at 25.1 A (10/1000 µs) - Peak voltage seen by protected circuit during rated surge |
| Peak Pulse Power (PPP) | 600 W (10/1000 µs) - Sustained surge energy handling capability per IEC 61000-4-4 |
| Leakage Current (IRM) | 0.2 µA at 25 °C - Minimal parasitic loading on sensitive analog or low-power circuits |
| Junction Temperature Range | –55 °C to +175 °C - Enables operation in under-hood automotive or industrial high-temp environments |
| ESD Withstand (IEC 61000-4-2) | 30 kV air & contact discharge - Exceeds Level 4 immunity for robust system-level ESD protection |
| Package | DO-214AC (SMA) - Standardized surface-mount outline with IPC 7531 footprint compatibility |
Pinout & Package
Package: DO-214AC (SMA), JEDEC registered, epoxy-molded, UL94 V0 compliant. Dimensions: D = 2.25–2.90 mm, E = 4.80–5.35 mm, E1 = 3.95–4.60 mm, L = 0.75–1.50 mm (per DS5142 Rev 11, Table 3).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (marked band) | Surge current sink node | Connected to protected line; conducts transient current to ground when voltage exceeds VRM |
| Anode | Reference/return path | Typically tied to system ground or low-impedance return plane; completes clamping path |
Key Features
| Feature | Design Value |
|---|---|
| Low clamping ratio (VCL/VRM = 1.57) | Minimizes overvoltage stress on downstream ICs during 10/1000 µs surges |
| High-temperature reliability (Tj max = 175 °C) | Supports long-term deployment in engine control units and industrial motor drives |
| Dynamic resistance of 0.206 Ω | Ensures predictable, repeatable clamping voltage across production lots and temperature range |
| UL94 V0 resin housing | Meets flame-retardancy requirements for safety-critical end equipment certifications |
| MSL Level 1 rating | Enables standard reflow assembly without dry-pack or baking preconditioning |
Applications
| Industrial PLC I/O Protection | Automotive Body Control Module |
|---|---|
|
Use Scenario: Protecting 24 V DC input channels in programmable logic controllers against load dump and inductive switching transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between field input and microcontroller GPIO to clamp surges before they reach protection diodes or ESD structures. Use Value: Limits voltage to ≤23.6 V during 600 W surges, preventing latch-up or permanent damage to 3.3 V/5 V logic interfaces. |
Use Scenario: Safeguarding LIN bus transceivers and sensor supply lines in door module ECUs exposed to battery transients and ESD events. IC Role / Device Role / Timing Role: Standoff-rated TVS on 12 V rail feeding LIN PHY, absorbing ESD pulses per ISO 10605 and ISO 7637-2 Pulse 5a. Use Value: Withstands 30 kV contact discharge and clamps 10/1000 µs surges to safe levels without degrading signal integrity on 20 kbps LIN lines. |
| Telecom Ethernet Surge Protection | Medical Equipment Power Input |
|
Use Scenario: Secondary protection on PoE-powered Ethernet switch ports after primary gas discharge tube (GDT) stage. IC Role / Device Role / Timing Role: Fast-response TVS in series with common-mode chokes to suppress residual differential-mode surges post-GDT crowbarring. Use Value: Low dynamic resistance ensures rapid voltage collapse during 8/20 µs lightning-induced surges, limiting stress on magnetics and PHY ICs. |
Use Scenario: Input-stage overvoltage protection for AC/DC adapters powering diagnostic imaging subsystems requiring Class II medical isolation. IC Role / Device Role / Timing Role: Primary TVS on secondary-side 24 V output rail to absorb coupling transients from mains-side surges or internal switching noise. Use Value: UL94 V0 housing and 175 °C rating support compliance with IEC 60601-1 creepage/clearance and thermal derating requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA6J15A-TR | Identical electrical specs (VRM = 15 V, VCL = 23.6 V); same DO-214AC package and marking "6UH" | No functional difference - SMA6J154A-TR is a documented alternate marking for SMA6J15A-TR per ST's ordering table | Select SMA6J15A-TR if standard part number is required for BOM alignment; both share identical traceability and qualification data. |
| SMBJ15A | Higher PPP (600 W same), but larger SMB (DO-214AA) package; VCL = 24.4 V at 24.7 A | Requires larger PCB footprint; slightly higher clamping voltage reduces margin for 3.3 V logic interfaces | Choose only if existing SMB layout prevents SMA rework; otherwise SMA6J154A-TR offers superior board space efficiency. |
Compared with SMA6J15A-TR (identical function, alternate marking) and SMBJ15A (larger package, +0.8 V clamping), SMA6J154A-TR delivers optimal surge protection density for space-constrained 15 V rail designs while maintaining full IEC 61000-4-2/4-4 compliance.
Availability
SMA6J154A-TR is available at Aetrix Electronics and suitable for industrial PLC I/O protection, automotive body control modules, telecom Ethernet surge protection, and medical equipment power input requiring stable component supply across extended temperature and high-reliability environments.
Supply support for SMA6J154A-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, delivering innovative solutions across automotive, industrial, and power management markets with over 40 years of analog and protection device expertise.
The SMA6J series belongs to ST's transient protection portfolio, engineered specifically for high-energy, high-temperature ESD and surge suppression in harsh-environment electronics where reliability and standardized packaging are critical.
FAQ
What is the exact clamping voltage of SMA6J154A-TR at 25.1 A?
The clamping voltage is 23.6 V measured at 25.1 A peak pulse current under 10/1000 µs waveform conditions, per Table 2 of DS5142 Rev 11. This value is guaranteed across –55 °C to +175 °C junction temperature, with temperature coefficient αT = 10⁻⁴/°C applied per datasheet Equation 2.
Is SMA6J154A-TR RoHS and REACH compliant?
Yes - SMA6J154A-TR carries STMicroelectronics' ECOPACK2 environmental compliance certification, meeting RoHS Directive 2011/65/EU and REACH Regulation (EC) No. 1907/2006. Lead finish is matte tin, and packaging resin is halogen-free per ST's public ECOPACK documentation.
Can SMA6J154A-TR be used in bidirectional configurations?
No - SMA6J154A-TR is unidirectional (denoted by "A" suffix). For bidirectional operation, use SMA6J15CA-TR ("CA" suffix), which provides symmetrical clamping for AC-coupled or floating signal lines. The two types are not interchangeable without circuit redesign.
What is the maximum allowable soldering temperature profile?
The device follows JEDEC J-STD-020 MSL Level 1 profile: peak reflow temperature 240–245 °C for ≤60 seconds (max 90 s), ramp-up rate ≤3 °C/s, and cooling rate ≥2 °C/s. ST recommends minimizing air convection to prevent component movement during reflow (DS5142 Rev 11, Figure 21).
SMA6J154A-TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- DO-214AC, SMA
- Series:
- SMA6J, TRANSIL™
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 154V
- Voltage - Breakdown (Min):
- 171V
- Voltage - Clamping (Max) @ Ipp:
- 265V
- Current - Peak Pulse (10/1000µs):
- 12.6A (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)
SMA6J154A-TR FAQ
1.How can I place an order for SMA6J154A-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA6J154A-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 SMA6J154A-TR reliable?
The price and inventory of SMA6J154A-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMA6J154A-TR is usually 5 days.
3.What payment methods are accepted for SMA6J154A-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA6J154A-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA6J154A-TR?
SMA6J154A-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA6J154A-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 SMA6J154A-TR?
For technical support, including SMA6J154A-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA6J154A-TR requirements.
6.How does Aetrix verify that SMA6J154A-TR is sourced from the original manufacturer or authorized distributors?
All SMA6J154A-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 SMA6J154A-TR meets industry standards.
7.What is the process for return or replacement of SMA6J154A-TR?
All SMA6J154A-TR units undergo pre-shipment inspection (PSI). If there is an issue with SMA6J154A-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 SMA6J154A-TR part is unused and in its original packaging.
Return procedure for SMA6J154A-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMA6J154A-TR Tags
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