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STMicroelectronics SMA6J58A-TR
- Part No.:
- SMA6J58A-TR
- Manufacturer:
- STMicroelectronics
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA6J58A-TR.pdf
- Description:
- TVS DIODE 58VWM 100VC SMA
- Quantity:
- Payment:
- Shipping:
Inventory:4,300
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Product details
Overview
SMA6J58A-TR from STMicroelectronics is a unidirectional 600 W transient voltage suppression diode designed for ESD and surge protection in DC power rails and signal lines. It features a 58 V stand-off voltage (VRM), 91.1 V maximum clamping voltage at 6.7 A (10/1000 µs), and operates up to +175 °C junction temperature - deployed in industrial power supplies, automotive body control modules, and PoE-powered devices.
For engineers reviewing the SMA6J58A-TR datasheet, SMA6J58A-TR pinout, SMA6J58A-TR application, or SMA6J58A-TR equivalent, key selection criteria include clamping performance under IEC 61000-4-2 (30 kV contact/air), low leakage (<0.2 µA @ 25 °C), JEDEC DO-214AC (SMA) package compatibility, and thermal robustness for high-reliability PCB layouts.
Technical Context
This TVS diode uses planar silicon technology to achieve stable breakdown behavior and low dynamic resistance (RD = 2.97 Ω at 10/1000 µs), enabling precise overvoltage clamping with minimal voltage overshoot during fast transients. Its unidirectional configuration supports DC-biased protection paths without reverse conduction.
The device complies with IEC 61000-4-4 Level 4 (4 kV), exceeds IEC 61000-4-2 Level 4 (30 kV air/contact discharge), and maintains rated performance across -55 °C to +175 °C junction temperature - validated per JESD22-A108 and MIL-STD-750 Method 2026.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Stand-off Voltage (VRM) | 58 V - Maximum continuous reverse operating voltage before significant leakage begins; sets protection threshold for 48 V nominal systems. |
| Breakdown Voltage (VBR min) | 64.4 V @ 1 mA - Guaranteed minimum voltage at which avalanche conduction initiates; ensures reliable triggering above normal operating rail. |
| Clamping Voltage (VCL) | 91.1 V @ 6.7 A (10/1000 µs) - Peak voltage seen by protected circuit during 600 W surge; defines worst-case stress on downstream components. |
| Peak Pulse Power (PPP) | 600 W (10/1000 µs) - Sustained energy-handling capability for common lightning-induced surges; validated per IEC 61000-4-5 waveform. |
| Leakage Current (IRM) | 0.2 µA @ 25 °C - Ultra-low reverse leakage preserves efficiency in battery-backed or low-power sensor circuits. |
| Junction Temperature (Tj max) | +175 °C - Enables operation in under-hood automotive, industrial motor drives, and enclosed power converters without derating. |
| Dynamic Resistance (RD) | 2.97 Ω - Low impedance during clamping reduces voltage overshoot and improves protection margin for sensitive ICs. |
Pinout & Package
Supplied in JEDEC DO-214AC (SMA) package - surface-mount, molded plastic case with matte tin-plated leads compliant with IPC-7531 footprint. Dimensions: 4.80–5.35 mm (E), 3.95–4.60 mm (E1), 2.25–2.90 mm (D), 1.90–2.45 mm (A1), 0.75–1.50 mm (L). RoHS-compliant, UL94 V0 rated resin.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (marked band) | Surge current sink | Connected to protected line; conducts avalanche current to ground during overvoltage events. |
| Anode | Reference node | Tied to system ground or lowest potential reference; completes clamping path for unidirectional operation. |
Key Features
| Feature | Design Value |
|---|---|
| IEC 61000-4-2 Level 4 compliance | 30 kV air/contact discharge immunity - eliminates need for external ESD staging in USB, CAN, or sensor interfaces. |
| Low dynamic resistance (2.97 Ω) | Minimizes clamping voltage rise under high-current transients - critical for protecting 3.3 V/5 V logic rails adjacent to 48 V bus. |
| 175 °C maximum junction temperature | Supports placement near heat sources (e.g., MOSFETs, inductors) without thermal derating in industrial motor controllers. |
| JEDEC DO-214AC (SMA) footprint | Direct drop-in replacement for legacy SMA TVS diodes; compatible with standard reflow profiles (peak 240–245 °C). |
| UL94 V0 resin housing | Self-extinguishing encapsulation meets fire-safety requirements for medical and building automation equipment. |
Applications
| Industrial Power Supply Protection | Automotive Body Control Module (BCM) |
|---|---|
Use Scenario: 48 V input rail in programmable logic controller (PLC) power stage exposed to load-dump and inductive switching transients. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between input capacitor and DC-DC converter input to limit surge voltage to <95 V. Use Value: Clamps 600 W (10/1000 µs) surges while maintaining <0.2 µA leakage - prevents false triggering of undervoltage lockout and preserves standby power budget. | Use Scenario: LIN bus transceiver power line in door module subjected to ISO 7637-2 pulse 1/2a/5a. IC Role / Device Role / Timing Role: Primary overvoltage suppressor on 12 V supply rail, positioned upstream of LDO regulator. Use Value: Withstands 175 °C ambient under hood and clamps to 91.1 V within 1 µs - protects transceiver ICs rated for 16 V absolute max. |
| PoE-Powered Device Input Stage | Smart Sensor Node ESD Hardening |
Use Scenario: 57 V DC input of IEEE 802.3af/at PD (Powered Device) encountering cable discharge events and Ethernet surges. IC Role / Device Role / Timing Role: First-line transient suppressor on PSE-side input, coordinated with secondary TVS and fuse. Use Value: 58 V VRM aligns with PoE+ open-circuit voltage; 91.1 V clamping ensures downstream DC-DC converter (rated 100 V) remains within safe operating area. | Use Scenario: RS-485 transceiver VCC rail in wireless sensor node mounted on factory floor with frequent operator ESD events. IC Role / Device Role / Timing Role: Localized clamping device adjacent to transceiver power pin, minimizing trace inductance. Use Value: 30 kV IEC 61000-4-2 immunity and 0.2 µA leakage prevent data corruption and extend battery life in 10-year deployments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA6J58AHE3_A/H | Same electrical specs; AEC-Q200 qualified, enhanced moisture sensitivity level (MSL 1), and automotive-grade traceability. | Required for automotive production; not needed for industrial or consumer use. | Select when automotive qualification or extended MSL reliability is mandated. |
| SMCJ58A | Higher 1500 W peak power (10/1000 µs); DO-214AB (SMC) package - 2× larger footprint and higher thermal mass. | Suitable where space allows and >600 W surge margin is required (e.g., AC front-end, solar inverters). | Choose only if 600 W is insufficient and board layout accommodates SMC package. |
Compared with SMA6J58AHE3_A/H, the SMA6J58A-TR lacks AEC-Q200 validation but offers identical clamping and leakage performance at lower cost for non-automotive use; versus SMCJ58A, it trades surge headroom for compact SMA footprint - critical for dense PoE or sensor PCBs.
Availability
SMA6J58A-TR is available at Aetrix Electronics and suitable for industrial power supplies, automotive body control modules, PoE-powered devices, and smart sensor nodes requiring stable component supply across multi-year production cycles.
Supply support for SMA6J58A-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 microcontrollers, power devices, sensors, and analog ICs for industrial, automotive, 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 DC applications - emphasizing low leakage, stable clamping, and JEDEC-standard packaging.
FAQ
What is the maximum clamping voltage of SMA6J58A-TR under a 10/1000 µs surge?
The maximum clamping voltage is 91.1 V at 6.7 A for a 10/1000 µs waveform, measured per IEC 61000-4-5 test conditions. This value is guaranteed across the full operating temperature range (-55 °C to +175 °C) and defines the peak voltage imposed on protected circuitry during standardized surge events.
Is SMA6J58A-TR bidirectional or unidirectional?
SMA6J58A-TR is a unidirectional TVS diode, indicated by the "A" suffix (versus "CA" for bidirectional). It conducts only in reverse bias during overvoltage events and must be oriented with cathode toward the protected line - essential for DC rail protection where polarity is fixed.
Does SMA6J58A-TR meet automotive qualification standards?
No - SMA6J58A-TR is not AEC-Q200 qualified. For automotive applications, ST offers the pin-compatible SMA6J58AHE3_A/H variant, which adds AEC-Q200 stress testing, enhanced MSL rating, and automotive traceability while retaining identical electrical parameters.
What is the recommended PCB footprint for SMA6J58A-TR?
The recommended footprint follows IPC-7531 for DO-214AC (SMA): pad length 5.43 mm, pad width 1.40 mm, center-to-center spacing 3.90 mm, and thermal relief pads under each lead. ST provides exact dimensions in Figure 14 of DS5142 (Rev 11), ensuring optimal solder joint strength and thermal dissipation.
SMA6J58A-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):
- 58V
- Voltage - Breakdown (Min):
- 64.4V
- Voltage - Clamping (Max) @ Ipp:
- 100V
- Current - Peak Pulse (10/1000µs):
- 33A (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)
SMA6J58A-TR FAQ
1.How can I place an order for SMA6J58A-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA6J58A-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 SMA6J58A-TR reliable?
The price and inventory of SMA6J58A-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMA6J58A-TR is usually 5 days.
3.What payment methods are accepted for SMA6J58A-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA6J58A-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA6J58A-TR?
SMA6J58A-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA6J58A-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 SMA6J58A-TR?
For technical support, including SMA6J58A-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA6J58A-TR requirements.
6.How does Aetrix verify that SMA6J58A-TR is sourced from the original manufacturer or authorized distributors?
All SMA6J58A-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 SMA6J58A-TR meets industry standards.
7.What is the process for return or replacement of SMA6J58A-TR?
All SMA6J58A-TR units undergo pre-shipment inspection (PSI). If there is an issue with SMA6J58A-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 SMA6J58A-TR part is unused and in its original packaging.
Return procedure for SMA6J58A-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMA6J58A-TR Tags
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