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Microchip Technology SMAJ58CAE3/TR13
- Part No.:
- SMAJ58CAE3/TR13
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAJ58CAE3/TR13.pdf
- Description:
- TVS DIODE 58VWM 93.6VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:9,032
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Product details
Overview
SMAJ58CAE3/TR13 from Microsemi is a bidirectional surface-mount Transient Voltage Suppressor (TVS) designed for robust ESD, EFT, and secondary lightning surge protection in DC power rails and signal lines. It features a 58 V reverse standoff voltage (VWM), 64.4 V minimum breakdown voltage (VBR), 103.0 V maximum clamping voltage (VC) at 4.9 A peak pulse current, and 500 W peak pulse power rating per 10/1000 µs waveform.
For engineers reviewing the SMAJ58CAE3/TR13 datasheet, SMAJ58CAE3/TR13 pinout, SMAJ58CAE3/TR13 application, or SMAJ58CAE3/TR13 equivalent, this device is selected for high-reliability industrial power input stages, telecom interface protection, and automotive body electronics where bidirectional clamping, RoHS-compliant packaging, and IEC61000-4-2/4-4/4-5 compliance are required.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, with <100 ps theoretical response time for unidirectional mode and <5 ns for bidirectional conduction-enabling effective suppression of fast-rising transients such as ESD and switching noise. Its DO-214AC (SMA) package provides low thermal resistance (15 °C/W junction-to-lead) and supports 500 W surge dissipation without derating up to 75 °C lead temperature.
The device meets IEC61000-4-5 Class 4 secondary lightning protection (42 Ω source) and Class 2 (12 Ω source), with leakage current ≤1 µA at 58 V and clamping performance validated at 10/1000 µs waveform. It is rated for operation from –65 °C to +150 °C and features void-free UL94V-0 epoxy encapsulation with matte-tin RoHS-compliant terminations.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 58 V - Maximum continuous reverse operating voltage before clamping begins; defines safe DC rail margin for 48 V systems. |
| VBR min @ IBR | 64.4 V @ 1 mA - Minimum voltage at which avalanche conduction initiates; ensures reliable triggering above normal operating voltage. |
| VC @ IPP | 103.0 V @ 4.9 A - Clamped voltage during 10/1000 µs surge; limits downstream IC stress to safe levels under defined transient energy. |
| PPP | 500 W - Peak pulse power handling capability; enables protection against high-energy surges without failure. |
| ID @ VWM | ≤1 µA - Reverse leakage current at standoff voltage; minimizes standby power loss and avoids false triggering. |
| Operating Temp | –65 °C to +150 °C - Wide junction temperature range supports deployment in under-hood automotive, industrial control, and outdoor telecom enclosures. |
Pinout & Package
Package: DO-214AC (SMA), surface-mount, bidirectional configuration with no polarity marking (no cathode band). Dimensions: 4.93–5.48 mm length × 2.57–2.79 mm width × 1.98–3.05 mm height; moisture sensitivity level (MSL) 1, no dry pack required.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bidirectional surge path terminal | Either end connects to protected line; current flows in either direction during overvoltage events-no orientation dependency on PCB. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity constraints. |
| IEC61000-4-5 Class 4 compliance (42 Ω) | Validated for 4 kV surge immunity in secondary lightning environments-critical for industrial fieldbus and PoE interfaces. |
| RoHS-compliant "e3" termination | Matte-tin plating meets JEDEC J-STD-020B reflow standards and eliminates lead-based solder compatibility concerns. |
| DO-214AC thermal performance | 15 °C/W junction-to-lead thermal resistance allows sustained 5 W steady-state dissipation at TL = 75 °C with proper pad layout. |
Applications
| Industrial Power Input Protection | Telecom Ethernet Port Protection |
|---|---|
Use Scenario: 48 V DC input stage of programmable logic controller (PLC) power supply exposed to load dump and inductive switching transients. IC Role / Device Role / Timing Role: Bidirectional TVS placed across input rails to clamp positive/negative surges before they reach DC-DC converter ICs. Use Value: Limits transient voltage to ≤103 V during 4.9 A 10/1000 µs events, preventing damage to 60 V-rated MOSFETs and gate drivers. |
Use Scenario: RJ45 Ethernet port on industrial switch subjected to ESD (±8 kV contact) and EFT bursts per IEC61000-4-4. IC Role / Device Role / Timing Role: TVS array replacement using discrete SMAJ58CAE3/TR13 on differential pairs to suppress common-mode transients. Use Value: Sub-5 ns response ensures clamping occurs before Ethernet PHY ICs experience latch-up or gate oxide stress. |
| Automotive Body Control Module | Smart Meter Communication Interface |
Use Scenario: LIN bus line in vehicle door module exposed to battery reverse connection and jump-start transients. IC Role / Device Role / Timing Role: Bidirectional TVS connected between LIN signal and chassis ground to shunt reverse-polarity and surge energy. Use Value: Withstands 40 A forward surge (8.3 ms half-sine) and clamps to 103 V-protecting LIN transceivers rated for 60 V absolute max. |
Use Scenario: RS-485 interface of utility smart meter installed in outdoor cabinets subject to induced lightning surges. IC Role / Device Role / Timing Role: TVS placed on A/B lines referenced to local ground to absorb coupled 1 kV/0.5 µs transients per IEC61000-4-5. Use Value: 500 W peak power rating sustains multiple Class 2 (12 Ω source) lightning strikes without degradation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ58CA | No "e3" RoHS suffix; uses SnPb terminations instead of matte-tin; identical electrical specs and DO-214AC package. | Not suitable for lead-free assembly processes; requires Pb-containing solder profile and violates EU RoHS Directive 2011/65/EU. | Select SMAJ58CA only for legacy repair or non-RoHS-compliant production environments. |
| SMBJ58CA | Same VWM, VBR, VC, but lower 600 W peak power rating and SMB (DO-214AA) package with higher thermal resistance (20 °C/W). | Less effective in high-duty-cycle surge environments; reduced power density limits use in high-temperature enclosures. | Choose SMBJ58CA only when board space permits larger footprint and thermal management is less constrained. |
Compared with SMAJ58CA (SnPb) and SMBJ58CA (higher thermal resistance, different package), SMAJ58CAE3/TR13 delivers RoHS-compliant manufacturability, optimal thermal performance in DO-214AC, and verified 500 W surge capability-making it the preferred choice for new industrial and automotive designs requiring compliance and reliability.
Availability
SMAJ58CAE3/TR13 is available at Aetrix Electronics and suitable for industrial power input protection, telecom Ethernet port hardening, and automotive body control modules requiring stable component supply and full RoHS compliance.
Supply support for SMAJ58CAE3/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 developed specifically for surface-mount transient suppression in space-constrained, high-surge environments-emphasizing fast response, repeatable clamping, and ruggedized packaging for mission-critical DC power and interface protection.
FAQ
What does the "CA" suffix indicate in SMAJ58CAE3/TR13?
The "CA" suffix denotes a bidirectional configuration-meaning the SMAJ58CAE3/TR13 conducts and clamps symmetrically for both positive and negative transients. Unlike unidirectional variants (e.g., SMAJ58A), it has no cathode marking and functions identically regardless of voltage polarity applied across its terminals. This makes SMAJ58CAE3/TR13 ideal for AC-coupled lines or floating buses where surge direction is unpredictable.
Is SMAJ58CAE3/TR13 compatible with lead-free reflow profiles?
Yes, SMAJ58CAE3/TR13 is fully compatible with lead-free reflow. Its "e3" suffix confirms RoHS-compliant matte-tin terminations rated for 260 °C for 10 seconds per MIL-STD-750 Method 2026. The device meets IPC/JEDEC J-STD-020B Level 1 moisture sensitivity, eliminating bake requirements prior to assembly-ensuring reliable solder joint formation in standard Pb-free reflow ovens without delamination or popcorning.
How does SMAJ58CAE3/TR13 perform under IEC61000-4-5 lightning surge testing?
SMAJ58CAE3/TR13 is certified for IEC61000-4-5 secondary lightning protection: Class 4 (42 Ω source, 4 kV) and Class 2 (12 Ω source, 1 kV). Its 103.0 V clamping voltage at 4.9 A ensures protected circuits remain below critical thresholds during standardized 1.2/50 µs open-circuit voltage and 8/20 µs current waveforms-validated in Microsemi's characterization per Figure 2 of MSC0270A Rev L.
What is the thermal resistance of SMAJ58CAE3/TR13, and how does it affect power handling?
SMAJ58CAE3/TR13 has a junction-to-lead thermal resistance of 15 °C/W and junction-to-ambient of 80 °C/W on FR4 with recommended footprint. This allows 5 W steady-state dissipation at 75 °C lead temperature, supporting continuous operation in hot environments. For pulsed surges, the low RθJL enables rapid heat transfer into the PCB copper, preserving 500 W peak rating without thermal runaway during repetitive transients.
Can SMAJ58CAE3/TR13 replace SMAJ58A in an existing design?
No-SMAJ58CAE3/TR13 cannot directly replace SMAJ58A without circuit review. SMAJ58A is unidirectional (cathode-marked) and only clamps positive transients to ground; SMAJ58CAE3/TR13 is bidirectional and clamps both polarities. Substituting it may cause unintended conduction in DC-biased lines or alter fault current paths. Use SMAJ58CAE3/TR13 only where bidirectional protection is explicitly required and layout accommodates symmetrical placement.
SMAJ58CAE3/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:
- 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)
SMAJ58CAE3/TR13 FAQ
1.How can I place an order for SMAJ58CAE3/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAJ58CAE3/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 SMAJ58CAE3/TR13 reliable?
The price and inventory of SMAJ58CAE3/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMAJ58CAE3/TR13 is usually 5 days.
3.What payment methods are accepted for SMAJ58CAE3/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ58CAE3/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAJ58CAE3/TR13?
SMAJ58CAE3/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAJ58CAE3/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 SMAJ58CAE3/TR13?
For technical support, including SMAJ58CAE3/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ58CAE3/TR13 requirements.
6.How does Aetrix verify that SMAJ58CAE3/TR13 is sourced from the original manufacturer or authorized distributors?
All SMAJ58CAE3/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 SMAJ58CAE3/TR13 meets industry standards.
7.What is the process for return or replacement of SMAJ58CAE3/TR13?
All SMAJ58CAE3/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ58CAE3/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 SMAJ58CAE3/TR13 part is unused and in its original packaging.
Return procedure for SMAJ58CAE3/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMAJ58CAE3/TR13 Tags
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ESD9B5.0ST5G
onsemi
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DESD3V3E1BL-7B
Diodes Incorporated
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onsemi
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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onsemi
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DESD5V0U1BB-7
Diodes Incorporated
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D12V0L1B2LP-7B
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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