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Alpha & Omega Semiconductor Inc. SMDJ36CA
- Part No.:
- SMDJ36CA
- Manufacturer:
- Alpha & Omega Semiconductor Inc.
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMDJ36CA.pdf
- Description:
- 1CH 36V BIDIRECTIONAL 3000W SMD
- Quantity:
- Payment:
- Shipping:
Inventory:3,228
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Product details
Overview
SMDJ36CA from Alpha & Omega Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in DO-214AB (SMC) package, rated for 36 V reverse standoff voltage (VRWM), 40–44.2 V breakdown voltage (VBR), and 3000 W peak pulse power (10/1000 µs). It clamps transients to ≤58.1 V at 51.7 A peak pulse current and operates from –55 °C to +150 °C, protecting DC power rails and I/O lines in industrial motor drives and telecom interfaces.
For engineers reviewing the SMDJ36CA datasheet, pinout, applications, or equivalent options, key selection criteria include bidirectional clamping capability, low clamping ratio (VC/VBR ≈ 1.45), JEDEC DO-214AB surface-mount compatibility, and compliance with IEC 61000-4-2 Level 4 ESD immunity when integrated with proper PCB layout.
Technical Context
The SMDJ36CA uses a glass-passivated silicon junction optimized for fast transient response (<1.0 ps rise time from 0 V to VBR) and high-energy surge handling. Its bidirectional architecture enables symmetric clamping in AC-coupled or floating signal paths without polarity constraints.
Thermal design relies on low junction-to-lead resistance (15 °C/W) and requires 8.0 mm × 8.0 mm copper pads per terminal for full 3000 W rating. The device meets MSL Level 1 per J-STD-020 and UL 94V-0 flammability standard, supporting lead-free reflow up to 260 °C peak.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 36.0 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR @ IT=1 A | 40.0–44.2 V - Verified breakdown threshold defining turn-on sensitivity |
| VC @ IPPM | 58.1 V - Clamped voltage at 51.7 A peak pulse, determining protected circuit stress level |
| PPPM (10/1000 µs) | 3000 W - Surge energy handling capacity under standardized lightning/surge waveform |
| TJ max | +150 °C - Maximum junction temperature enabling operation in high-ambient industrial environments |
| IR @ VRWM | 2.0 µA - Low leakage ensuring minimal standby power loss in battery-backed systems |
| RθJL | 15 °C/W - Thermal resistance from junction to lead, critical for thermal derating calculations |
Pinout & Package
DO-214AB (SMC J-Bend) surface-mount package with molded plastic case, matte tin lead-free plating, and color band denoting cathode end for unidirectional variants; bidirectional SMDJ36CA has no polarity marking and symmetrical terminals.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode | Bidirectional surge path | Identical electrical behavior in both directions; no functional distinction between terminals |
| Case | Mechanical mounting only | No internal connection; serves as thermal conduction path via soldered copper pad |
Key Features
| Feature | Design Value |
|---|---|
| Fast response time | <1.0 ps - Enables suppression of sub-nanosecond ESD events before downstream IC damage occurs |
| Glass passivated junction | Enhanced reliability and stable VBR over temperature and lifetime vs. epoxy-passivated alternatives |
| Built-in strain relief | Reduces mechanical stress on bond wires during thermal cycling and board flexure |
| MSL Level 1 | Unlimited floor life at ≤30 °C/60% RH, eliminating bake requirements prior to reflow |
| UL 94V-0 plastic | Self-extinguishing housing prevents flame propagation in safety-critical enclosures |
Applications
| Industrial Motor Drives | Telecom Line Interfaces |
|---|---|
Use Scenario: Protection of 48 V DC bus inputs against load dump and inductive switching spikes in servo drive controllers. IC Role / Device Role / Timing Role: Primary overvoltage clamp placed directly across input terminals upstream of DC-DC converters. Use Value: Limits transient voltage to 58.1 V, preventing damage to 60 V-rated MOSFETs and gate drivers while sustaining 3000 W surges. | Use Scenario: Surge protection on RS-485/RS-422 differential data lines exposed to lightning-induced ground potential differences. IC Role / Device Role / Timing Role: Bidirectional TVS connected line-to-line and line-to-ground to absorb common-mode and differential-mode transients. Use Value: Symmetric clamping ensures equal protection regardless of signal polarity, maintaining signal integrity during 10/1000 µs surges up to 51.7 A. |
| Automotive Body Control Modules | Renewable Energy Inverters |
Use Scenario: Input protection for 12 V/24 V CAN/LIN bus nodes subjected to ISO 7637-2 Pulse 1 and Pulse 2a transients. IC Role / Device Role / Timing Role: Secondary-level TVS placed after primary LC filters to handle residual fast-edge transients. Use Value: Sub-1 ps response captures edge energy missed by slower passive filters, reducing EMI coupling into microcontroller I/O. | Use Scenario: DC-link protection in solar string inverters where PV array surges couple into MPPT converter inputs. IC Role / Device Role / Timing Role: High-power TVS mounted across bulk capacitor terminals to shunt lightning-induced currents. Use Value: 3000 W rating supports IEC 61000-4-5 Combination Wave testing at 2 Ω source impedance 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 |
|---|---|---|---|
| SAC36CA (Littelfuse) | Same DO-214AB package, identical VRWM/VBR/VC specs, but higher IR (5 µA vs. 2 µA) and lower PPPM (2500 W) | Limited to lower-energy surge environments; not recommended for IEC 61000-4-5 Level 4 testing | Select SMDJ36CA when full 3000 W rating and 2 µA leakage are required for high-reliability industrial use. |
| 1.5KE36CA (ON Semiconductor) | Through-hole DO-15 package, same electrical specs, but RθJA = 60 °C/W (vs. 75 °C/W) and no MSL1 rating | Requires wave soldering or hand assembly; unsuitable for automated SMT lines or high-moisture environments | Choose SMDJ36CA for surface-mount production, thermal performance on FR-4, and moisture-sensitive handling compliance. |
Compared with SAC36CA and 1.5KE36CA, the SMDJ36CA delivers superior surge robustness in SMT form factor, tighter leakage control for low-power systems, and process-compliant packaging for high-volume manufacturing-making it optimal for next-generation industrial and renewable energy designs.
Availability
SMDJ36CA is available at Aetrix Electronics and suitable for industrial motor drives, telecom line interfaces, and automotive body control modules requiring stable component supply, long-term lifecycle support, and RoHS-compliant green packaging.
Supply support for SMDJ36CA 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 is designed specifically for high-power transient suppression in surface-mount applications, emphasizing ruggedness, repeatable clamping, and compatibility with automated assembly processes.
FAQ
What is the maximum clamping voltage of the SMDJ36CA under a 10/1000 µs surge?
The SMDJ36CA clamps to a maximum of 58.1 V when subjected to its rated peak pulse current of 51.7 A on a 10/1000 µs waveform. This value is measured per JEDEC standards and defines the upper voltage limit imposed on protected circuitry during surge events. The SMDJ36CA's clamping ratio (VC/VBR) is approximately 1.45, confirming effective voltage limiting for downstream 60 V-rated components.
Is the SMDJ36CA suitable for bidirectional AC signal line protection?
Yes, the SMDJ36CA is explicitly designed for bidirectional operation, with identical electrical characteristics in both directions. Its CA suffix denotes bidirectional configuration, making it ideal for protecting AC-coupled interfaces like RS-485, Ethernet PHYs, or audio lines where polarity reversal occurs. The SMDJ36CA does not require orientation during placement, simplifying SMT assembly.
What PCB layout guidelines apply to achieve the full 3000 W rating of the SMDJ36CA?
To achieve the full 3000 W peak pulse power rating, the SMDJ36CA must be mounted on 8.0 mm × 8.0 mm copper pads per terminal, per the datasheet's test condition. These pads provide necessary thermal mass and low-inductance current paths. Avoid narrow traces or thermal reliefs between the pads and internal ground/power planes, and ensure solder mask defined pads for optimal wetting and thermal transfer in the SMDJ36CA layout.
Does the SMDJ36CA meet automotive qualification standards such as AEC-Q200?
No, the SMDJ36CA is not AEC-Q200 qualified. It is rated for industrial-grade operation (–55 °C to +150 °C) and complies with JEDEC, UL 94V-0, and RoHS standards, but lacks the extended reliability testing (e.g., temperature cycling, humidity bias, board flex) required for automotive qualification. For AEC-Q200 applications, consider AOS's automotive-grade P6SMB36CA or equivalent qualified variants.
How does the temperature coefficient affect the SMDJ36CA's breakdown voltage stability?
The SMDJ36CA exhibits a typical temperature coefficient of ΔVBR = 0.1% × VBR @ 25 °C × ΔT, meaning its breakdown voltage shifts by ~0.04–0.044 V per °C change from 25 °C. This low drift ensures predictable clamping across its –55 °C to +150 °C operating range, critical for systems where thermal gradients could otherwise cause premature or delayed clamping in the SMDJ36CA.
SMDJ36CA 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):
- 36V
- Voltage - Breakdown (Min):
- 40V
- Voltage - Clamping (Max) @ Ipp:
- 58.1V
- Current - Peak Pulse (10/1000µs):
- 51.7A
- 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
SMDJ36CA FAQ
1.How can I place an order for SMDJ36CA through Aetrix?
Please submit a Request for Quotation (RFQ) for SMDJ36CA 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 SMDJ36CA reliable?
The price and inventory of SMDJ36CA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMDJ36CA is usually 5 days.
3.What payment methods are accepted for SMDJ36CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMDJ36CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMDJ36CA?
SMDJ36CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMDJ36CA 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 SMDJ36CA?
For technical support, including SMDJ36CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMDJ36CA requirements.
6.How does Aetrix verify that SMDJ36CA is sourced from the original manufacturer or authorized distributors?
All SMDJ36CA 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 SMDJ36CA meets industry standards.
7.What is the process for return or replacement of SMDJ36CA?
All SMDJ36CA units undergo pre-shipment inspection (PSI). If there is an issue with SMDJ36CA, 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 SMDJ36CA part is unused and in its original packaging.
Return procedure for SMDJ36CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMDJ36CA Tags
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