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Microchip Technology SMAJ58AE3/TR13
- Part No.:
- SMAJ58AE3/TR13
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAJ58AE3/TR13.pdf
- Description:
- TVS DIODE 58VWM 93.6VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:4,707
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Product details
Overview
SMAJ58AE3/TR13 from Microsemi is a unidirectional surface-mount transient voltage suppressor (TVS) designed for primary and secondary lightning surge protection, ESD/EFT immunity per IEC61000-4-2/4-4, and inductive switching transient suppression in DC power rails and signal lines. It features a 58 V standoff voltage (VWM), 64.4 V minimum breakdown voltage (VBR), 103 V maximum clamping voltage (VC) at 4.9 A peak pulse current, and 500 W peak pulse power rating at 10/1000 µs waveform.
For engineers reviewing the SMAJ58AE3/TR13 datasheet, SMAJ58AE3/TR13 pinout, SMAJ58AE3/TR13 application, or SMAJ58AE3/TR13 equivalent, this device is selected for robust overvoltage protection in automotive body electronics, industrial PLC I/O modules, telecom power interfaces, and PoE-powered equipment where fast response (<100 ps theoretical), low leakage (<1 µA @ VWM), and RoHS-compliant surface-mount reliability are required.
Technical Context
This unidirectional TVS operates as a voltage-clamped shunt protector: under normal bias it presents <1 µA leakage at 58 V; when transient voltage exceeds 64.4 V (measured at 1 mA IBR), it avalanches into low-impedance conduction to clamp the line at ≤103 V. Its DO-214AC package provides thermal resistance of 15 °C/W junction-to-lead and supports 5 W steady-state dissipation at 75 °C lead temperature.
The device meets IEC61000-4-5 secondary lightning protection up to Class 4 (42 Ω source) and Class 2 (12 Ω source), with clamping performance validated at 10/1000 µs waveform. Its bidirectional counterpart SMAJ58CAE3/TR13 shares identical VWM, VBR, and VC but exhibits symmetrical clamping in both polarities and half the capacitance at 0 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Standoff) | 58 V - Maximum continuous reverse operating voltage before leakage exceeds 1 µA; defines safe DC rail operating margin. |
| VBR min @ IBR | 64.4 V @ 1 mA - Minimum avalanche initiation voltage; ensures reliable turn-on above nominal system voltage. |
| VC @ IPP | 103 V @ 4.9 A - Maximum clamped voltage during 10/1000 µs surge; determines protected IC's voltage stress limit. |
| PPP | 500 W - Peak pulse power handling capability; enables suppression of high-energy transients without failure. |
| IPP | 4.9 A - Peak pulse current at VC; correlates directly to surge energy (W = V × I × t) for design margining. |
| ID @ VWM | <1 µA - Reverse standby leakage; ensures minimal power loss and no false triggering on stable DC lines. |
| tclamp | <100 ps theoretical - Avalanche response time; guarantees sub-nanosecond reaction to ESD events. |
Pinout & Package
DO-214AC (SMA) surface-mount package with cathode-indicated band; void-free thermosetting epoxy case meeting UL94V-0; C-bend (modified J-bend) matte-tin plated leads solderable per MIL-STD-750 Method 2026; weight: 0.064 g; moisture sensitivity level: Level 1 (no dry pack required).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current return path | Connected to ground or low-impedance reference; carries full surge current during clamping. |
| Cathode | Protected line connection | Connected to the line being protected (e.g., +12 V rail); polarity marking band identifies this terminal. |
Key Features
| Feature | Design Value |
|---|---|
| 500 W peak pulse power | Enables robust suppression of IEC61000-4-5 lightning surges (42 Ω/12 Ω source) without degradation. |
| RoHS-compliant "e3" suffix | Meets EU Directive 2011/65/EU with annealed matte-tin plating; no lead or hazardous substance restrictions. |
| Unidirectional configuration | Provides asymmetric clamping ideal for DC power rails where polarity is fixed and reverse conduction must be blocked. |
| 100% temperature cycling screening option | Available with MA prefix for avionics-grade reliability: -55 °C to +125 °C (10× cycles), HTRB, and surge testing. |
| Tape-and-reel packaging | Standard EIA-481-1-A format (12 mm tape, 750 pcs/7″ reel or 2500 pcs/13″ reel) enables automated SMT placement. |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC Digital Input Module |
|---|---|
Use Scenario: Protection of 12 V supply rail against load dump and alternator ripple transients in vehicle BCMs. IC Role / Device Role / Timing Role: Shunt TVS connected between VCC and GND to clamp spikes exceeding 64.4 V before they reach MCU and CAN transceivers. Use Value: Prevents latch-up or permanent damage to 58 V-rated power management ICs during ISO 7637-2 Pulse 5a (load dump) events. |
Use Scenario: Safeguarding 24 V digital input channels against field-wiring induced surges and EFT bursts in factory automation PLCs. IC Role / Device Role / Timing Role: Unidirectional TVS placed across input optocoupler terminals to limit transient voltage to ≤103 V during IEC61000-4-4 EFT testing. Use Value: Maintains functional integrity of isolated inputs under 4 kV contact EFT (Level 4), ensuring no spurious state changes. |
| Telecom Power Interface Board | PoE-Powered Endpoint Device |
Use Scenario: Secondary lightning protection on -48 V DC telecom power feed lines entering central office equipment. IC Role / Device Role / Timing Role: TVS array component clamping negative-going surges on the -48 V rail to protect upstream DC/DC converters and monitoring ICs. Use Value: Complies with IEC61000-4-5 Class 2 (12 Ω source) requirements by limiting clamped voltage to 103 V at 4.9 A. |
Use Scenario: Overvoltage protection on powered device (PD) Ethernet port during PoE negotiation and power-up transients. IC Role / Device Role / Timing Role: Unidirectional TVS on the PD's PSE-side interface to absorb inrush and miswiring-induced surges before reaching IEEE 802.3af/at controller. Use Value: Ensures compliance with IEEE 802.3bt Annex 122A surge test (10/1000 µs, 500 W) without derating or parallel devices. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ58AHE3/TR13 | Same electrical specs but with high-reliability screening per MIL-PRF-19500 JANTX; includes 100% surge and HTRB testing. | Required for military/aerospace programs demanding MIL-spec qualification and extended temperature operation (-55 °C to +125 °C). | Select SMAJ58AHE3/TR13 only if JANTX-level screening documentation and traceability are contractually mandated. |
| SMAJ58CAE3/TR13 | Bidirectional version: identical VWM, VBR, VC, and PPP, but symmetrical clamping and ~50% lower capacitance at 0 V. | Suitable for AC-coupled signal lines (e.g., RS-485, CAN bus) where polarity reversal or differential transients occur. | Choose SMAJ58CAE3/TR13 only when protecting bidirectional or floating signals; avoid for DC power rails due to reverse conduction risk. |
Compared with SMAJ58AE3/TR13, SMAJ58AHE3/TR13 adds qualification rigor without altering clamping behavior, while SMAJ58CAE3/TR13 shifts from DC-rail protection to AC/symmetrical transient suppression-neither is pin-compatible nor functionally interchangeable without circuit review.
Availability
SMAJ58AE3/TR13 is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC I/O modules, telecom power interfaces, and PoE-powered endpoint devices requiring stable component supply across long production lifecycles.
Supply support for SMAJ58AE3/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, and industrial markets.
The SMAJ series was engineered specifically for surface-mount transient suppression in harsh environments, delivering 500 W surge capability in the compact DO-214AC footprint for space-constrained DC power and signal line protection.
FAQ
What is the clamping voltage of SMAJ58AE3/TR13 at its rated peak pulse current?
The SMAJ58AE3/TR13 has a maximum clamping voltage (VC) of 103 V when subjected to its rated peak pulse current of 4.9 A under the standard 10/1000 µs waveform. This value is measured per Figure 2 in the Microsemi MSC0270A datasheet and defines the upper voltage limit imposed on protected circuitry during surge events.
Is SMAJ58AE3/TR13 RoHS compliant and what does the "e3" suffix indicate?
Yes, SMAJ58AE3/TR13 is RoHS compliant. The "e3" suffix denotes annealed matte-tin plating on the leads per IPC/JEDEC J-STD-020B Level 1 moisture sensitivity, with no lead or other restricted substances exceeding EU Directive 2011/65/EU limits. This ensures compatibility with lead-free reflow processes.
How does SMAJ58AE3/TR13 differ from SMAJ58CAE3/TR13?
SMAJ58AE3/TR13 is unidirectional (cathode-banded), blocking reverse current and clamping only positive transients, whereas SMAJ58CAE3/TR13 is bidirectional with symmetrical clamping in both polarities and no polarity marking. Their VWM, VBR, and VC values are identical, but SMAJ58CAE3/TR13 exhibits half the capacitance at 0 V and is intended for AC or floating signal lines.
What is the thermal resistance and power derating behavior of SMAJ58AE3/TR13?
SMAJ58AE3/TR13 has a junction-to-lead thermal resistance of 15 °C/W and a junction-to-ambient resistance of 80 °C/W on FR4 with 1 oz Cu and recommended footprint. Its steady-state power dissipation is rated at 5 W at 75 °C lead temperature, derating linearly to 1.56 W at 25 °C ambient per the Figure 3 derating curve in the datasheet.
Which IEC standards does SMAJ58AE3/TR13 meet for surge and ESD protection?
SMAJ58AE3/TR13 meets IEC61000-4-2 (ESD immunity up to ±8 kV contact), IEC61000-4-4 (EFT/burst immunity up to ±4 kV), and IEC61000-4-5 (surge immunity) for secondary lightning effects: Class 4 (42 Ω source) up to SMAJ12A and Class 2 (12 Ω source) up to SMAJ16A-both applicable to SMAJ58AE3/TR13 per the datasheet classification table.
SMAJ58AE3/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:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 58V
- Voltage - Breakdown (Min):
- 64.4V
- Voltage - Clamping (Max) @ Ipp:
- 93.6V
- Current - Peak Pulse (10/1000µs):
- 5.3A
- 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)
SMAJ58AE3/TR13 FAQ
1.How can I place an order for SMAJ58AE3/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAJ58AE3/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 SMAJ58AE3/TR13 reliable?
The price and inventory of SMAJ58AE3/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMAJ58AE3/TR13 is usually 5 days.
3.What payment methods are accepted for SMAJ58AE3/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ58AE3/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAJ58AE3/TR13?
SMAJ58AE3/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAJ58AE3/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 SMAJ58AE3/TR13?
For technical support, including SMAJ58AE3/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ58AE3/TR13 requirements.
6.How does Aetrix verify that SMAJ58AE3/TR13 is sourced from the original manufacturer or authorized distributors?
All SMAJ58AE3/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 SMAJ58AE3/TR13 meets industry standards.
7.What is the process for return or replacement of SMAJ58AE3/TR13?
All SMAJ58AE3/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ58AE3/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 SMAJ58AE3/TR13 part is unused and in its original packaging.
Return procedure for SMAJ58AE3/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMAJ58AE3/TR13 Tags
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