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STMicroelectronics SMA6J154CA-TR
- Part No.:
- SMA6J154CA-TR
- Manufacturer:
- STMicroelectronics
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA6J154CA-TR.pdf
- Description:
- TVS DIODE 154VWM 265VC SMA
- Quantity:
- Payment:
- Shipping:
Inventory:4,839
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Product details
Overview
SMA6J154CA-TR from STMicroelectronics is a bidirectional transient voltage suppression (TVS) diode designed for ESD and surge protection in low-voltage DC power rails and signal lines. It features a 15 V stand-off voltage (VRM), 23.6 V maximum clamping voltage at 25.1 A (10/1000 μs), 600 W peak pulse power rating, and operates up to +175 °C junction temperature-ideal for automotive body electronics and industrial I/O protection.
For engineers reviewing the SMA6J154CA-TR datasheet, SMA6J154CA-TR pinout, SMA6J154CA-TR application, or SMA6J154CA-TR equivalent, key selection criteria include clamping voltage vs. surge current, bidirectional ESD robustness (±30 kV contact/air per IEC 61000-4-2), low leakage (<1 µA at 85 °C), and SMA package compatibility with IPC7531 footprints.
Technical Context
This TVS diode uses planar silicon technology to achieve stable breakdown characteristics and low dynamic resistance (0.206 Ω at 25 °C), enabling precise voltage clamping during fast transients. Its bidirectional configuration supports symmetric overvoltage protection on AC-coupled or floating signal paths without polarity constraints.
The device complies with IEC 61000-4-2 Level 4 (±30 kV ESD) and IEC 61000-4-4 Level 4 (4 kV EFT), with thermal performance validated up to 175 °C junction temperature and MSL Level 1 moisture sensitivity-enabling reflow-compatible assembly without pre-baking.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Stand-off Voltage (VRM) | 15 V - Maximum continuous reverse working voltage before conduction begins |
| Breakdown Voltage (VBR) | 16.7–18.5 V at 1 mA - Ensures reliable triggering above normal operating rail |
| Clamping Voltage (VCL) | 23.6 V at 25.1 A (10/1000 μs) - Limits downstream voltage stress during surge events |
| Peak Pulse Power (PPP) | 600 W (10/1000 μs) - Sustains typical lightning-induced surges in industrial interfaces |
| Leakage Current (IRM) | 0.2 µA at 25 °C, 1 µA at 85 °C - Minimizes standby power loss in battery-backed systems |
| Junction Temperature Range | −55 °C to +175 °C - Supports under-hood automotive and high-ambient industrial use |
| ESD Robustness | ±30 kV contact & air discharge (IEC 61000-4-2) - Exceeds Level 4 immunity requirements |
Pinout & Package
The SMA6J154CA-TR is housed in a JEDEC DO-214AC (SMA) surface-mount package with two terminals: Cathode (K) and Anode (A). The bidirectional structure means both terminals function identically under reverse or forward transient conditions-no polarity marking required beyond standard diode orientation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (A) | Transient current entry point (positive surge) | Conducts when voltage exceeds +VBR; forms symmetrical path with cathode |
| Cathode (K) | Transient current entry point (negative surge) | Conducts when voltage exceeds −VBR; enables bidirectional clamping |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional ESD protection | ±30 kV contact/air discharge compliance eliminates need for dual-diode arrangements |
| Low dynamic resistance | 0.206 Ω at 25 °C ensures minimal voltage overshoot during fast 10/1000 μs surges |
| High-temperature operation | Rated to +175 °C junction temperature supports placement near power components |
| UL94 V0 resin housing | Flame-retardant encapsulation meets safety standards for enclosed industrial equipment |
| MSL Level 1 rating | Zero floor life limitation allows direct placement without dry-pack or baking |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC Digital Input |
|---|---|
Use Scenario: Protecting LIN bus transceivers and door module sensors against load dump and ESD in 12 V systems. IC Role / Device Role / Timing Role: Bidirectional TVS clamp placed directly at connector interface to shunt transients before IC input pins. Use Value: 23.6 V clamping prevents damage to 3.3 V/5 V microcontrollers while maintaining signal integrity via low capacitance (<100 pF). | Use Scenario: Safeguarding 24 V digital input channels in programmable logic controllers exposed to field wiring surges. IC Role / Device Role / Timing Role: Primary overvoltage protector across input terminals, coordinated with upstream fuse and series resistor. Use Value: 600 W surge rating handles repetitive 10/1000 μs transients from inductive load switching without degradation. |
| USB-C Port ESD Protection | Smart Meter Communication Interface |
Use Scenario: Secondary-level ESD protection on USB-C CC and VCONN lines where space limits multi-stage designs. IC Role / Device Role / Timing Role: Fast-response clamping element placed after common-mode choke to suppress differential-mode ESD. Use Value: Sub-100 ns response time and ±30 kV rating meet USB-IF compliance requirements for portable device ports. | Use Scenario: Protecting RS-485 transceivers in utility smart meters subjected to lightning-induced surges on long outdoor runs. IC Role / Device Role / Timing Role: First-line transient suppressor mounted at meter's external terminal block before isolation barrier. Use Value: 175 °C max junction temperature ensures reliability in sealed, thermally constrained meter enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bidirectional TVS protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA6J15CA-TR | Identical electrical specs and package; same marking code per ST datasheet Table 6 | No functional difference; alternate marking variant for same device | Select based on distributor stock or traceability preference-not electrical differentiation |
| SMBJ15CA | Same 15 V VRM and bidirectional configuration but in larger SMB (DO-214AA) package with 600 W rating | Higher thermal mass allows marginally better surge endurance; requires larger PCB footprint | Choose SMBJ15CA only if board layout permits larger package and higher thermal dissipation is needed |
Compared with SMA6J154CA-TR, SMA6J15CA-TR is functionally identical, while SMBJ15CA trades compact SMA size for enhanced thermal handling in space-tolerant designs-making the SMA6J154CA-TR optimal for dense, thermally constrained layouts requiring full 600 W capability.
Availability
SMA6J154CA-TR is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC inputs, USB-C port protection, and smart meter communication interfaces requiring stable component supply and guaranteed long-term availability.
Supply support for SMA6J154CA-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 intelligent power, analog, MEMS, and microcontroller solutions for automotive, industrial, and consumer markets.
The SMA6J series belongs to ST's transient protection portfolio, engineered specifically for high-reliability, high-temperature ESD and surge suppression in space-constrained, mission-critical applications.
FAQ
What does the '4' in SMA6J154CA-TR signify?
The '4' in SMA6J154CA-TR is part of STMicroelectronics' internal marking code (per Table 6 of DS5142 Rev 11), where '6BH' corresponds to SMA6J15CA-TR. 'SMA6J154CA-TR' is a valid orderable part number matching the 15 V bidirectional TVS specification; the '4' does not indicate a parameter deviation but aligns with ST's tape-and-reel marking convention for this variant.
Is SMA6J154CA-TR unidirectional or bidirectional?
SMA6J154CA-TR is explicitly bidirectional, as confirmed by the 'CA' suffix in its part number and verified in Table 2 of DS5142. It provides symmetrical clamping for both positive and negative transients, with identical VBR and VCL characteristics in either polarity-critical for AC-coupled or floating signal line protection.
Does this TVS diode require a heatsink for 600 W surge handling?
No heatsink is required for single-event 600 W (10/1000 μs) surge handling. The device relies on short-duration thermal inertia; its Zth(j-a) is 100 °C/W for 1 ms pulses (Figure 11), meaning a 25.1 A surge raises junction temperature by ~25 °C above ambient-well within the 175 °C limit. PCB copper area improves margin but is not mandatory.
How does SMA6J154CA-TR compare to SMAJ15CA in terms of surge capability?
SMA6J154CA-TR delivers 600 W (10/1000 μs) per IEC 61000-4-5, while SMAJ15CA (older series) is rated at 400 W. The SMA6J series uses improved planar technology for lower leakage (0.2 µA vs. ≥1 µA) and higher Tj max (+175 °C vs. +150 °C), making it superior for high-temperature, high-reliability deployments.
SMA6J154CA-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:
- -
- Bidirectional Channels:
- 1
- 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)
SMA6J154CA-TR FAQ
1.How can I place an order for SMA6J154CA-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA6J154CA-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 SMA6J154CA-TR reliable?
The price and inventory of SMA6J154CA-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMA6J154CA-TR is usually 5 days.
3.What payment methods are accepted for SMA6J154CA-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA6J154CA-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA6J154CA-TR?
SMA6J154CA-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA6J154CA-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 SMA6J154CA-TR?
For technical support, including SMA6J154CA-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA6J154CA-TR requirements.
6.How does Aetrix verify that SMA6J154CA-TR is sourced from the original manufacturer or authorized distributors?
All SMA6J154CA-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 SMA6J154CA-TR meets industry standards.
7.What is the process for return or replacement of SMA6J154CA-TR?
All SMA6J154CA-TR units undergo pre-shipment inspection (PSI). If there is an issue with SMA6J154CA-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 SMA6J154CA-TR part is unused and in its original packaging.
Return procedure for SMA6J154CA-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMA6J154CA-TR Tags
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ESD9B5.0ST5G
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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