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Alpha & Omega Semiconductor Inc. SMDJ58CA
- Part No.:
- SMDJ58CA
- Manufacturer:
- Alpha & Omega Semiconductor Inc.
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMDJ58CA.pdf
- Description:
- 1CH 58V BIDIRECTIONAL 3000W SMD
- Quantity:
- Payment:
- Shipping:
Inventory:4,997
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Product details
Overview
SMDJ58CA from Alpha & Omega Semiconductor is a bi-directional transient voltage suppressor (TVS) diode in DO-214AB (SMC) package, designed for high-energy surge protection in DC power lines and data interfaces. It features 58 V reverse standoff voltage (VRWM), 64.4–71.2 V breakdown voltage (VBR) at 1 mA, 93.6 V maximum clamping voltage (VC) at 32.1 A peak pulse current, and 3000 W peak pulse power rating on 10/1000 µs waveform.
For engineers reviewing the SMDJ58CA datasheet, pinout, applications, or equivalent options, key selection criteria include bidirectional clamping capability, low leakage (<2 µA at VRWM), fast sub-1 ps response time, and compatibility with automated SMT assembly per J-STD-020 MSL Level 1.
Technical Context
The SMDJ58CA operates as a silicon avalanche diode configured for symmetrical bi-directional clamping-enabling protection of AC-coupled or floating signal paths without polarity constraints. Its glass-passivated junction ensures stable VBR tolerance (±5% typical) and low temperature coefficient (0.1% × VBR/°C), while the DO-214AB package provides strain relief and thermal resistance of 15 °C/W (junction-to-lead).
It delivers 3000 W peak pulse power under standardized 10/1000 µs waveform conditions when mounted on 8.0 mm × 8.0 mm copper pads, with a maximum operating junction temperature of +150 °C and storage range from –55 °C to +150 °C. Repetition rate is limited to 0.01% duty cycle.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 58.0 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR @ IT=1mA | 64.4–71.2 V - Confirmed avalanche onset range ensuring predictable turn-on margin |
| VC @ IPPM | 93.6 V - Clamped voltage at 32.1 A peak pulse current, defining protected circuit voltage ceiling |
| PPPM (10/1000µs) | 3000 W - Surge energy handling capacity for lightning or ESD transients |
| IR @ VRWM | <2.0 µA - Minimal leakage current preserving signal integrity and power efficiency |
| TJ max | +150 °C - Enables reliable operation in industrial and automotive under-hood environments |
| Package | DO-214AB (SMC J-Bend) - Surface-mount outline with low profile and built-in strain relief |
Pinout & Package
DO-214AB (SMC) package: molded plastic case with J-bend leads; cathode band denotes polarity for unidirectional variants, but SMDJ58CA is bi-directional and lacks functional polarity marking-both terminals are electrically symmetric.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode | Bi-directional avalanche junction terminals | Electrically interchangeable; no fixed anode/cathode-enables AC line or differential signal protection without orientation constraint |
| Lead 1 / Lead 2 | Mounting interface to PCB copper pads | Thermally coupled to 8.0 mm × 8.0 mm copper areas; junction-to-lead RθJL = 15 °C/W supports high-power dissipation |
Key Features
| Feature | Design Value |
|---|---|
| Bi-directional clamping | Enables single-device protection of AC, differential, or floating bus lines without external polarity management |
| Fast response time | <1.0 ps rise time from 0 V to VBR ensures suppression before sensitive ICs experience overvoltage stress |
| Glass passivated junction | Improves long-term reliability and stability of VBR under thermal cycling and humidity exposure |
| MSL Level 1 compliance | Supports lead-free reflow up to 260 °C peak without moisture-induced popcorning or delamination |
| UL 94V-0 flammability | Self-extinguishing plastic housing meets safety standards for enclosed industrial and telecom equipment |
Applications
| Industrial Motor Drives | Automotive Body Control Modules |
|---|---|
Use Scenario: Protection of 48 V DC power rails feeding motor gate drivers and position sensors against load dump and inductive switching spikes. IC Role / Device Role: Primary surge clamp placed upstream of DC-DC converters and microcontrollers. Use Value: Withstands 3000 W transients and clamps to ≤93.6 V, preventing damage to 60 V-rated MOSFETs and logic ICs. | Use Scenario: Bidirectional protection of LIN bus lines exposed to battery transients and ESD during connector mating. IC Role / Device Role: TVS diode bridging LIN+ and LIN− to ground, suppressing ±100 V pulses per ISO 16750-2. Use Value: Symmetrical clamping ensures equal protection for both polarities without additional components or layout complexity. |
| Telecom Power Feeds | Renewable Energy Inverters |
Use Scenario: Input-stage surge protection on 48 V PoE-powered network switches subjected to lightning-induced surges on Ethernet cables. IC Role / Device Role: First-line defense between RJ45 magnetics and DC-DC front-end, shunting common-mode energy. Use Value: Low IR (<2 µA) avoids loading idle PoE detection circuits; DO-214AB footprint fits tight board spacing near connectors. | Use Scenario: DC-link protection in solar string inverters where PV array transients couple into MPPT controller inputs. IC Role / Device Role: Clamp across isolated sensor supply rails (e.g., current shunt amplifiers) referenced to floating grounds. Use Value: Bi-directional behavior accommodates bipolar voltage excursions during rapid irradiance changes or grid faults. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SAC58CA (Littelfuse) | Same VRWM (58 V), identical DO-214AB package, but lower PPPM (1500 W vs. 3000 W) | Not suitable for high-energy lightning surge zones; limited to IEC 61000-4-5 Level 3 (2 Ω source) | Select SMDJ58CA when full 3000 W IEC 61000-4-5 Level 4 compliance is required. |
| 1.5KE56CA (ON Semiconductor) | Higher VRWM (56 V), axial DO-201 package, same 3000 W rating but slower response (>1 ns) and no MSL1 rating | Requires through-hole mounting and larger board area; unsuitable for high-density SMT designs | Choose SMDJ58CA for surface-mount scalability, thermal performance, and RoHS-compliant reflow compatibility. |
Compared with SAC58CA and 1.5KE56CA, the SMDJ58CA uniquely combines 3000 W surge rating, bi-directional symmetry, sub-1 ps response, and MSL Level 1 suitability-making it optimal for space-constrained, high-reliability SMT applications demanding full IEC 61000-4-5 Level 4 immunity.
Availability
SMDJ58CA is available at Aetrix Electronics and suitable for industrial motor drives, automotive body control modules, and telecom power feeds requiring stable component supply, consistent parametric performance, and long-term lifecycle support.
Supply support for SMDJ58CA 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
Alpha & Omega Semiconductor (AOS) is a fabless power semiconductor company specializing in high-efficiency MOSFETs, TVS diodes, and power ICs for computing, consumer, industrial, and automotive markets.
The SMDJ series was developed specifically for robust, high-power transient suppression in surface-mount power systems-emphasizing low clamping ratio, repeatable avalanche performance, and compatibility with modern lead-free manufacturing.
FAQ
What is the clamping voltage of the SMDJ58CA at its rated peak pulse current?
The SMDJ58CA has a maximum clamping voltage (VC) of 93.6 V at its rated peak pulse current (IPPM) of 32.1 A, measured under the standard 10/1000 µs waveform. This value defines the upper voltage limit imposed on protected circuitry during a full-rated surge event and is critical for ensuring downstream components remain within their absolute maximum ratings.
Is the SMDJ58CA suitable for protecting AC-coupled signal lines?
Yes, the SMDJ58CA is explicitly designed for bi-directional operation and is ideal for protecting AC-coupled or differential signal lines such as LIN, RS-485, or analog sensor outputs. Its symmetrical breakdown characteristic eliminates the need for polarity-aware placement, simplifying layout and reducing BOM count compared to unidirectional TVS solutions.
Does the SMDJ58CA meet lead-free reflow requirements?
Yes, the SMDJ58CA complies with J-STD-020 MSL Level 1 and supports lead-free reflow profiles with a maximum peak temperature of 260 °C. Its matte tin lead finish and robust DO-214AB construction prevent solder joint cracking, popcorning, or delamination during standard SMT assembly processes.
How does the thermal resistance of the SMDJ58CA affect its surge handling capability?
The SMDJ58CA has a typical junction-to-lead thermal resistance (RθJL) of 15 °C/W, which directly enables its 3000 W peak pulse rating when mounted on 8.0 mm × 8.0 mm copper pads. Lower RθJL allows faster heat transfer away from the junction during transient events, preventing thermal runaway and sustaining clamping performance across repeated surges.
What is the reverse leakage current specification for the SMDJ58CA at its rated VRWM?
The SMDJ58CA exhibits a maximum reverse leakage current (IR) of 2.0 µA at its reverse standoff voltage (VRWM) of 58.0 V and ambient temperature of 25 °C. This ultra-low leakage preserves signal fidelity in high-impedance sensing circuits and minimizes standby power loss in always-on power rail protection schemes.
SMDJ58CA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Alpha & Omega Semiconductor Inc.
- Package/Case:
- DO-214AB, SMC
- 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):
- 32.1A
- Power - Peak Pulse:
- 3000W (3kW)
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB
SMDJ58CA FAQ
1.How can I place an order for SMDJ58CA through Aetrix?
Please submit a Request for Quotation (RFQ) for SMDJ58CA 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 SMDJ58CA reliable?
The price and inventory of SMDJ58CA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMDJ58CA is usually 5 days.
3.What payment methods are accepted for SMDJ58CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMDJ58CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMDJ58CA?
SMDJ58CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMDJ58CA 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 SMDJ58CA?
For technical support, including SMDJ58CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMDJ58CA requirements.
6.How does Aetrix verify that SMDJ58CA is sourced from the original manufacturer or authorized distributors?
All SMDJ58CA 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 SMDJ58CA meets industry standards.
7.What is the process for return or replacement of SMDJ58CA?
All SMDJ58CA units undergo pre-shipment inspection (PSI). If there is an issue with SMDJ58CA, 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 SMDJ58CA part is unused and in its original packaging.
Return procedure for SMDJ58CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMDJ58CA Tags
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