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Microchip Technology SMAJ58CE3/TR13
- Part No.:
- SMAJ58CE3/TR13
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAJ58CE3/TR13.pdf
- Description:
- TVS DIODE 58VWM 103VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:6,484
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Product details
Overview
SMAJ58CE3/TR13 from Microsemi is a bidirectional surface-mount transient voltage suppressor (TVS) designed for high-energy surge protection in DC power rails and signal lines. It features a 58 V standoff voltage (VWM), 64.4 V minimum breakdown voltage (VBR), 103.0 V clamping voltage (VC) at 4.9 A peak pulse current, and 500 W peak pulse power rating per 10/1000 µs waveform - deployed in telecom power supplies, industrial I/O interfaces, and automotive body control modules.
For engineers reviewing the SMAJ58CE3/TR13 datasheet, SMAJ58CE3/TR13 pinout, SMAJ58CE3/TR13 application, or SMAJ58CE3/TR13 equivalent, key selection criteria include bidirectional ESD/EFT immunity per IEC61000-4-2/4-4, secondary lightning protection per IEC61000-4-5 (Class 4 with 12 Ω source), RoHS-compliant matte-tin plating, and DO-214AC package compatibility with standard SMT reflow profiles.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, enabling robust protection without polarity dependency in AC-coupled or floating systems. Its sub-5 ns response time ensures suppression before sensitive downstream circuitry sustains damage from fast transients such as ESD or inductive switching spikes.
The device delivers 500 W peak pulse power handling at 25 °C with thermal resistance of 15 °C/W (junction-to-lead), supported by void-free UL94V-0 epoxy packaging and C-bend terminations optimized for mechanical reliability and solder joint integrity on FR4 PCBs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 58 V - maximum continuous reverse operating voltage before conduction begins; sets upper limit for protected line voltage. |
| VBR min | 64.4 V @ 1 mA - guaranteed minimum breakdown threshold; defines onset of avalanche clamping action. |
| VC @ IPP | 103.0 V @ 4.9 A - maximum voltage seen by protected circuit during 10/1000 µs surge; determines safe margin for downstream ICs. |
| PPP | 500 W - peak transient energy absorption capability; enables protection against IEC61000-4-5 Class 4 lightning surges. |
| ID @ VWM | 1 μA - ultra-low leakage current at rated standoff voltage; prevents unnecessary power loss or false triggering in low-power systems. |
| Package | DO-214AC (SMAJ) - industry-standard surface-mount outline with 2.57–2.79 mm width and 4.93–5.48 mm length; compatible with automated pick-and-place and reflow. |
| Operating Temp | −65 °C to +150 °C - wide junction temperature range supports deployment in under-hood automotive, industrial motor drives, and outdoor telecom equipment. |
Pinout & Package
DO-214AC (SMAJ) package: surface-mount, bidirectional configuration with no polarity marking; cathode band omitted per bidirectional construction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Transient current path | Both terminals function identically; surge current flows bidirectionally between terminals to ground or rail, eliminating orientation constraints during placement. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC signals, differential buses (e.g., RS-485), and floating power domains without external diode pairing. |
| RoHS-compliant "e3" finish | Matte-tin plating meets JEDEC J-STD-020B Level 1 moisture sensitivity; eliminates dry-pack requirement and supports lead-free reflow up to 260 °C for 10 s. |
| IEC61000-4-5 Class 4 compliance | Validated for secondary lightning surges with 12 Ω source impedance - critical for industrial Ethernet ports and PLC analog input modules. |
| Fast response time | < 5 ns turn-on delay ensures suppression precedes propagation of ESD or EFT events into microcontroller GPIOs or ADC front-ends. |
| 500 W peak pulse rating | Supports repeated surge events without degradation when mounted on FR4 with recommended pad layout (1 oz Cu, thermal relief). |
Applications
| Industrial PLC Analog Inputs | Automotive Body Control Module (BCM) Power Rails |
|---|---|
Use Scenario: Protection of 0–10 V or 4–20 mA sensor inputs against field-induced surges and cable discharge events. IC Role / Device Role / Timing Role: Bidirectional TVS placed between signal line and ground to clamp transients before reaching precision op-amps or SAR ADCs. Use Value: Maintains signal integrity under IEC61000-4-4 EFT bursts (4 kV) and prevents offset drift or latch-up in measurement circuitry. |
Use Scenario: 12 V battery rail protection in BCM against load dump and jump-start transients. IC Role / Device Role / Timing Role: Primary surge limiter on main power input, coordinated with upstream fuse and downstream LDOs. Use Value: Limits clamped voltage to ≤103 V, staying below absolute maximum ratings of 3.3 V/5 V system controllers and CAN transceivers. |
| Telecom Power Supply Outputs | RS-485 Data Line Protection |
Use Scenario: Output rail stabilization for -48 V DC telecom rectifiers exposed to lightning-induced surges on distribution lines. IC Role / Device Role / Timing Role: Bidirectional shunt device across output and chassis ground to divert surge energy away from DC-DC converters and PMICs. Use Value: Withstands 500 W pulses while maintaining <1 μA standby leakage - avoids efficiency loss in always-on backup systems. |
Use Scenario: Transient suppression on differential A/B lines of RS-485 transceivers in factory automation networks. IC Role / Device Role / Timing Role: Symmetric clamping element placed between A–GND and B–GND to preserve common-mode noise rejection. Use Value: Prevents receiver saturation and bus lockup during 8 kV contact ESD per IEC61000-4-2, preserving data integrity without adding capacitance imbalance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ58CAHE3_A/H | Same VWM, VBR, VC, and PPP; identical DO-214AC package; differs only in tape/reel packaging (7″ reel vs. 13″ reel) and minor marking variation. | No functional difference; suitable for identical use cases including IEC61000-4-5 Class 4 protection. | Select SMAJ58CE3/TR13 for 13″ reels (2500 pcs); choose SMAJ58CAHE3_A/H for 7″ reels (750 pcs) or alternate logistics requirements. |
| SMBJ58CA | Same electrical specs but SMB (DO-214AA) package - 3.56 mm width vs. SMAJ's 2.79 mm; 10% lower thermal resistance (13 °C/W junction-to-lead). | Higher power density and better thermal performance; requires larger PCB footprint and different stencil design. | Prefer SMAJ58CE3/TR13 for space-constrained layouts; select SMBJ58CA where enhanced thermal margin is prioritized over board area. |
Compared with SMAJ58CAHE3_A/H, SMAJ58CE3/TR13 offers identical protection performance in a 13″ tape-and-reel format optimized for high-volume SMT lines; versus SMBJ58CA, it trades minor thermal advantage for tighter board space utilization and broader legacy footprint compatibility.
Availability
SMAJ58CE3/TR13 is available at Aetrix Electronics and suitable for industrial PLC analog inputs, automotive BCM power rails, and telecom power supply outputs requiring stable component supply, long-term lifecycle support, and RoHS-compliant manufacturing.
Supply support for SMAJ58CE3/TR13 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
Microsemi (now part of Microchip Technology) is a U.S.-based semiconductor company specializing in high-reliability analog and mixed-signal components for aerospace, defense, industrial, and communications markets.
The SMAJ series was engineered for cost-effective, high-energy transient suppression in surface-mount power and signal lines - targeting applications demanding IEC61000-4-2/4-4/4-5 compliance without through-hole assembly.
FAQ
What does the "C" and "E3" suffix mean in SMAJ58CE3/TR13?
The "C" denotes bidirectional construction - enabling symmetrical clamping across both polarities without polarity marking. The "E3" indicates RoHS-compliant matte-tin plating per JEDEC J-STD-020B Level 1, qualified for lead-free reflow up to 260 °C for 10 seconds. SMAJ58CE3/TR13 uses this finish to ensure environmental compliance and solderability without dry-pack requirements.
Is SMAJ58CE3/TR13 suitable for IEC61000-4-5 lightning surge testing?
Yes - SMAJ58CE3/TR13 is validated for secondary lightning protection per IEC61000-4-5 with 12 Ω source impedance at Class 4 level (1 kV test voltage). Its 103.0 V clamping voltage at 4.9 A peak pulse current ensures protected circuits remain within safe operating limits during standardized surge waveforms, making SMAJ58CE3/TR13 appropriate for industrial Ethernet ports and outdoor power supplies.
What is the thermal resistance and power derating behavior of SMAJ58CE3/TR13?
SMAJ58CE3/TR13 has a junction-to-lead thermal resistance of 15 °C/W and junction-to-ambient resistance of 80 °C/W on FR4 with 1 oz copper and recommended footprint. Its 500 W peak pulse rating applies at 25 °C; continuous power drops to 1.56 W at 25 °C ambient and 5 W at 75 °C lead temperature. Derating follows the curve in Figure 3 of the datasheet, ensuring SMAJ58CE3/TR13 maintains reliability across −65 °C to +150 °C operating range.
How does SMAJ58CE3/TR13 differ from unidirectional SMAJ58A variants?
SMAJ58CE3/TR13 provides bidirectional clamping - conducting in both directions above ±64.4 V - whereas SMAJ58A is unidirectional with cathode band marking and conducts only in reverse bias. This makes SMAJ58CE3/TR13 ideal for AC-coupled lines, differential buses, or floating grounds where polarity is undefined; SMAJ58A suits DC rails with known polarity and higher forward surge tolerance (40 A peak, 3.5 V max forward voltage).
What is the maximum clamping voltage and corresponding test condition for SMAJ58CE3/TR13?
The maximum clamping voltage for SMAJ58CE3/TR13 is 103.0 V, measured at a peak pulse current (IPP) of 4.9 A using the standardized 10/1000 µs double-exponential surge waveform. This value represents the worst-case voltage imposed on protected circuitry during a 500 W transient event, and is confirmed in the Electrical Characteristics table on page 3 of the Microsemi MSC0270A datasheet for SMAJ58CE3/TR13.
SMAJ58CE3/TR13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Package/Case:
- DO-214AC, SMA
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 58V
- Voltage - Breakdown (Min):
- 64.4V
- Voltage - Clamping (Max) @ Ipp:
- 103V
- Current - Peak Pulse (10/1000µs):
- 4.9A
- Power - Peak Pulse:
- 500W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
SMAJ58CE3/TR13 FAQ
1.How can I place an order for SMAJ58CE3/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAJ58CE3/TR13 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 SMAJ58CE3/TR13 reliable?
The price and inventory of SMAJ58CE3/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMAJ58CE3/TR13 is usually 5 days.
3.What payment methods are accepted for SMAJ58CE3/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ58CE3/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAJ58CE3/TR13?
SMAJ58CE3/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAJ58CE3/TR13 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 SMAJ58CE3/TR13?
For technical support, including SMAJ58CE3/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ58CE3/TR13 requirements.
6.How does Aetrix verify that SMAJ58CE3/TR13 is sourced from the original manufacturer or authorized distributors?
All SMAJ58CE3/TR13 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 SMAJ58CE3/TR13 meets industry standards.
7.What is the process for return or replacement of SMAJ58CE3/TR13?
All SMAJ58CE3/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ58CE3/TR13, 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 SMAJ58CE3/TR13 part is unused and in its original packaging.
Return procedure for SMAJ58CE3/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMAJ58CE3/TR13 Tags
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