My Inquiry
My Account
STMicroelectronics SMA6J24CA-TR
- Part No.:
- SMA6J24CA-TR
- Manufacturer:
- STMicroelectronics
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA6J24CA-TR.pdf
- Description:
- TVS DIODE 24VWM 44.3VC SMA
- Quantity:
- Payment:
- Shipping:
Inventory:6,519
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMA6J24CA-TR from STMicroelectronics is a bidirectional 600 W transient voltage suppression 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 24 V standoff voltage (VRM), 37.8 V clamping voltage at 16 A (10/1000 μs), and operates up to 175 °C junction temperature - deployed in industrial power supplies, automotive body control modules, and telecom interface circuits.
For engineers reviewing the SMA6J24CA-TR datasheet, SMA6J24CA-TR pinout, SMA6J24CA-TR application, or SMA6J24CA-TR equivalent, key selection criteria include bidirectional surge capability, low leakage (<1 µA at 85 °C), JEDEC DO-214AC (SMA) package compatibility, and IEC 61000-4-2 level 4 compliance (30 kV contact/air discharge).
Technical Context
This TVS diode uses planar silicon technology to achieve stable breakdown characteristics and low dynamic resistance (0.516 Ω at 25 °C, 10/1000 μs), enabling precise clamping under repetitive surges. Its bidirectional configuration protects AC-coupled or floating signal paths without polarity dependency.
The device meets J-STD-020 MSL Level 1 moisture sensitivity and supports reflow soldering per JEDEC/IPC profiles (peak 240–245 °C). Thermal impedance is optimized for FR4 PCBs with recommended 1.4 × 5.43 mm footprint per lead, delivering ≤100 °C/W junction-to-ambient under single-pulse conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Standoff Voltage (VRM) | 24 V - maximum continuous reverse operating voltage before conduction begins |
| Clamping Voltage (VCL) | 37.8 V at 16 A (10/1000 μs) - peak voltage seen by protected circuit during surge |
| Peak Pulse Power | 600 W (10/1000 μs) - energy-handling capacity for standard lightning-surge waveforms |
| Leakage Current | 0.2 µA at 25 °C, 1 µA at 85 °C - minimal DC loading on high-impedance nodes |
| Junction Temperature Range | −55 °C to +175 °C - enables deployment in under-hood automotive or industrial motor drive environments |
| ESD Rating | 30 kV contact & air discharge (IEC 61000-4-2 level 4) - exceeds industrial immunity requirements |
| Package | DO-214AC (SMA) - JEDEC-registered surface-mount outline with IPC-7531 compliant footprint |
Pinout & Package
DO-214AC (SMA) package: molded epoxy case with matte tin-plated leads, UL94 V0 rated resin, and JEDEC-compliant mechanical dimensions (E = 4.80–5.35 mm, D = 2.25–2.90 mm, L = 0.75–1.50 mm). Lead spacing matches IPC-7531 standard footprint (5.43 mm center-to-center).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (Marked Band) | Reference terminal for bidirectional operation | Identifies polarity marking; both terminals function identically in CA-type bidirectional configuration |
| Anode | Reference terminal for bidirectional operation | Electrically symmetric with cathode; no functional distinction in bidirectional mode |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional ESD protection | Enables single-device protection of AC signals or differential buses without external polarity management |
| Low dynamic resistance (RD) | 0.516 Ω at 25 °C ensures tight clamping margin and reduced overshoot during fast transients |
| High-temperature reliability | 175 °C max Tj rating supports long-term operation in thermally constrained enclosures |
| UL94 V0 resin housing | Meets flammability safety standards for end equipment requiring regulatory certification |
| JEDEC DO-214AC compliance | Guarantees mechanical interchangeability and automated assembly compatibility across supply chain |
Applications
| Industrial Power Input Protection | Automotive Body Control Module |
|---|---|
Use Scenario: 24 V DC input rail in programmable logic controllers exposed to load dump and inductive switching noise. IC Role / Device Role / Timing Role: Primary overvoltage clamp limiting transient excursions to <38 V during 600 W surges. Use Value: Prevents damage to downstream DC-DC converters and microcontroller power domains without derating due to thermal drift. | Use Scenario: LIN bus transceiver power line in door module subjected to ISO 7637-2 pulse 1 and pulse 2a. IC Role / Device Role / Timing Role: Bidirectional transient suppressor absorbing negative and positive polarity spikes on VBAT-supplied ICs. Use Value: Eliminates need for separate unidirectional devices on dual-polarity rails, reducing BOM count and PCB area. |
| Telecom Interface Protection | Smart Meter Communication Port |
Use Scenario: RS-485 data line in outdoor base station equipment facing lightning-induced surges. IC Role / Device Role / Timing Role: Secondary-level protection placed after gas discharge tube (GDT), clamping residual energy below receiver IC tolerance. Use Value: Achieves <100 ns response time and sub-40 V clamping to preserve signal integrity during 8/20 μs transients. | Use Scenario: PLC or RF communication port in utility meter exposed to ESD events during field servicing. IC Role / Device Role / Timing Role: Front-end ESD suppressor meeting IEC 61000-4-2 level 4 (30 kV contact) on isolated communication lines. Use Value: Maintains <1 µA leakage at 85 °C to avoid battery drain in always-on metering applications. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bidirectional TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ24CA-TR | 600 W rating in larger SMB (DO-214AA) package; 38.9 V VCL at 16.6 A | Higher thermal mass but requires 25% more PCB area; better for sustained surge duty cycles | Select when board layout allows larger footprint and thermal dissipation is prioritized over space |
| SMCJ24CA-TR | 1500 W rating in SMC (DO-214AB) package; 38.9 V VCL at 38.9 A | Higher surge capacity but slower response; suited for primary-level protection upstream of SMA6J24CA | Select for front-end protection where coordination with secondary clamps (e.g., SMA6J24CA) is required |
Compared with SMBJ24CA-TR and SMCJ24CA-TR, SMA6J24CA-TR delivers identical voltage ratings and ESD performance in the smallest DO-214 footprint, making it optimal for space-constrained secondary protection where thermal cycling dominates over single-event energy.
Availability
SMA6J24CA-TR is available at Aetrix Electronics and suitable for industrial power input protection, automotive body control modules, telecom interface protection, and smart meter communication ports requiring stable component supply across extended temperature ranges and high-reliability production programs.
Supply support for SMA6J24CA-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, designing and manufacturing analog, power, MCU, and sensor solutions for industrial, automotive, and consumer markets.
The SMA6J series belongs to ST's transient voltage suppression portfolio, engineered specifically for compact, high-temperature-stable ESD and surge protection in space-limited, mission-critical systems.
FAQ
What is the difference between SMA6J24A-TR and SMA6J24CA-TR?
SMA6J24A-TR is unidirectional and conducts only in reverse bias, while SMA6J24CA-TR is bidirectional and provides symmetrical clamping for both polarities. The 'CA' suffix explicitly denotes bidirectional functionality, critical for AC-coupled or floating signal lines where polarity reversal occurs.
Does SMA6J24CA-TR meet automotive AEC-Q200 requirements?
No - SMA6J24CA-TR is not AEC-Q200 qualified. It is rated for industrial and commercial applications with Tj up to 175 °C, but lacks the stress testing, failure analysis, and qualification documentation required for automotive-grade components. For AEC-Q200 designs, consider ST's Automotive TVS series such as SMAJ24CA-Q.
Can SMA6J24CA-TR be used in parallel for higher surge current handling?
Not recommended without derating and matching. Parallel connection introduces imbalance due to VBR tolerances (±5%) and dynamic resistance variation, leading to uneven current sharing. ST specifies single-device operation only; for higher power, select SMCJ24CA-TR or use coordinated staged protection.
What is the typical junction capacitance of SMA6J24CA-TR at 0 V?
Typical junction capacitance is 110 pF at 0 V reverse bias and 1 MHz, measured per Figure 8 in DS5142 Rev 11. This value decreases rapidly with increasing reverse voltage - e.g., ~25 pF at 12 V - making it suitable for data lines up to ~10 Mbps with minimal signal distortion.
SMA6J24CA-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:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 24V
- Voltage - Breakdown (Min):
- 26.7V
- Voltage - Clamping (Max) @ Ipp:
- 44.3V
- Current - Peak Pulse (10/1000µs):
- 80A (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)
SMA6J24CA-TR FAQ
1.How can I place an order for SMA6J24CA-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA6J24CA-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 SMA6J24CA-TR reliable?
The price and inventory of SMA6J24CA-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMA6J24CA-TR is usually 5 days.
3.What payment methods are accepted for SMA6J24CA-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA6J24CA-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA6J24CA-TR?
SMA6J24CA-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA6J24CA-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 SMA6J24CA-TR?
For technical support, including SMA6J24CA-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA6J24CA-TR requirements.
6.How does Aetrix verify that SMA6J24CA-TR is sourced from the original manufacturer or authorized distributors?
All SMA6J24CA-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 SMA6J24CA-TR meets industry standards.
7.What is the process for return or replacement of SMA6J24CA-TR?
All SMA6J24CA-TR units undergo pre-shipment inspection (PSI). If there is an issue with SMA6J24CA-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 SMA6J24CA-TR part is unused and in its original packaging.
Return procedure for SMA6J24CA-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMA6J24CA-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…
