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Alpha & Omega Semiconductor Inc. SMDJ13CA
- Part No.:
- SMDJ13CA
- Manufacturer:
- Alpha & Omega Semiconductor Inc.
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMDJ13CA.pdf
- Description:
- 1CH 13V BIDIRECTIONAL 3000W SMD
- Quantity:
- Payment:
- Shipping:
Inventory:9,969
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Product details
Overview
SMDJ13CA 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 13.0 V reverse stand-off voltage (VRWM), 14.4–15.9 V breakdown voltage (VBR @ 1 mA), 21.5 V maximum clamping voltage at 139.6 A peak pulse current, and 3000 W peak pulse power rating on 10/1000 µs waveform.
For engineers reviewing the SMDJ13CA datasheet, pinout, applications, or equivalent options, key selection criteria include bidirectional clamping capability, low clamping ratio (VC/VRWM ≈ 1.65), JEDEC DO-214AB thermal performance (RθJA = 75 °C/W), and compliance with IEC 61000-4-2/4-4/4-5 ESD/EFT/surge immunity requirements.
Technical Context
The SMDJ13CA operates as a voltage-clamped shunt protector: under normal bias it exhibits <2.0 µA reverse leakage at 13.0 V, then rapidly avalanches when transient voltage exceeds its 14.4–15.9 V breakdown range. Its glass-passivated junction ensures stable VBR over temperature with ±0.1 %/°C coefficient.
Designed for unidirectional and bidirectional configurations, the SMDJ13CA uses a color band to denote polarity-absent in bidirectional variants-enabling symmetric clamping across both polarities without external circuit reconfiguration. It meets MSL Level 1 per J-STD-020 and supports lead-free reflow up to 260 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 13.0 V - Maximum continuous reverse operating voltage before clamping initiates |
| VBR min/max | 14.4 V / 15.9 V @ 1 mA - Confirmed avalanche onset range defining turn-on threshold |
| VC @ IPPM | 21.5 V @ 139.6 A - Clamped voltage during 10/1000 µs surge, limiting downstream stress |
| PPPM | 3000 W - Peak transient energy absorption capacity on standardized waveform |
| TJ max | +150 °C - Maximum junction temperature enabling operation in industrial ambient environments |
| Polarity | Bi-directional - Symmetric clamping behavior for AC-coupled or floating signal lines |
| Package | DO-214AB (SMC J-Bend) - Surface-mount outline with 8.0 mm × 8.0 mm copper pad thermal requirement |
Pinout & Package
DO-214AB (SMC J-Bend) package: molded plastic case with matte tin lead-free plating; terminals solderable per MIL-STD-750 Method 2026; polarity indicated by cathode band for unidirectional types-omitted for SMDJ13CA due to bidirectional construction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (Bidirectional) | Reversible current path | No fixed polarity: either terminal serves as anode or cathode depending on instantaneous voltage polarity |
| Case | Non-connected mechanical structure | Plastic body provides insulation and strain relief; no electrical connection or thermal sink function beyond conduction through leads |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR tolerance and long-term reliability under repeated surge stress |
| Low-profile DO-214AB package | Enables compact PCB layout while maintaining 3000 W surge handling via optimized thermal path to copper pads |
| Fast response time | <1.0 ps rise time from 0 V to VBR enables protection of high-speed interfaces against ESD transients |
| MSL Level 1 rating | Supports standard SMT reflow profiles without moisture-related popcorning risk |
| UL 94V-0 flammability | Plastic housing meets safety standards for enclosed industrial and automotive enclosures |
Applications
| Industrial Motor Drives | Automotive Body Control Modules |
|---|---|
Use Scenario: Protection of 12 V CAN bus lines and LIN interfaces against load dump and jump-start surges. IC Role / Device Role / Timing Role: Bidirectional shunt clamp placed across differential signal pair to limit common-mode transients to safe levels. Use Value: Clamps 139.6 A surges to ≤21.5 V, preventing damage to transceivers rated for 36 V absolute maximum. | Use Scenario: Input protection for microcontroller GPIOs connected to external switches or sensors exposed to ISO 7637-2 Pulse 1/2a/3a. IC Role / Device Role / Timing Role: Standby-mode TVS suppressing negative-going spikes and positive transients on 5 V/3.3 V supply rails. Use Value: Sub-2 µA leakage at 13 V VRWM avoids battery drain in always-on vehicle modules. |
| Telecom Power Feeds | Renewable Energy Inverters |
Use Scenario: DC input surge suppression for PoE-powered devices subjected to lightning-induced surges on 48 V distribution lines. IC Role / Device Role / Timing Role: Primary-level clamping device upstream of DC-DC converters and hot-swap controllers. Use Value: 3000 W PPPM rating handles 10/1000 µs surges per IEC 61000-4-5 Level 4 without degradation. | Use Scenario: DC link protection in solar string inverters where PV array inputs experience rapid voltage reversals and grid-switching transients. IC Role / Device Role / Timing Role: Bidirectional clamp across DC bus to absorb reverse-polarity surges during islanding events or arc-fault interruption. Use Value: Symmetric clamping ensures equal protection during both forward and reverse voltage excursions up to ±21.5 V. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SAC13CA (Littelfuse) | Same VRWM (13 V), identical DO-214AB package, but lower PPPM (1500 W) and higher VC (24.4 V @ 125 A) | Limited to lower-energy surge environments; not suitable for IEC 61000-4-5 Level 4 compliance | Select only when board space constraints require same footprint but system-level surge testing is limited to Level 2 |
| 1.5KE13CA (ON Semiconductor) | Higher VRWM (13.0 V), same bidirectionality, but axial DO-201AD package and slower response (>1 ns) | Requires through-hole mounting and offers reduced ESD immunity due to parasitic inductance | Choose only for legacy through-hole designs where rework to SMD is impractical |
Compared with SAC13CA and 1.5KE13CA, the SMDJ13CA delivers superior surge robustness (3000 W vs. 1500 W/1500 W), tighter clamping (21.5 V vs. 24.4 V/25.5 V), and surface-mount compatibility-making it optimal for new industrial and automotive designs requiring high-reliability, high-density surge protection.
Availability
SMDJ13CA is available at Aetrix Electronics and suitable for industrial motor drives, automotive body control modules, and telecom power feeds requiring stable component supply, RoHS-compliant packaging, and consistent surge immunity performance across production batches.
Supply support for SMDJ13CA 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 high-power, surface-mount transient suppression in harsh environments-emphasizing low clamping ratio, repeatable surge endurance, and JEDEC-standardized thermal performance.
FAQ
What is the maximum clamping voltage of the SMDJ13CA under a 10/1000 µs surge?
The SMDJ13CA has a maximum clamping voltage (VC) of 21.5 V when subjected to its rated peak pulse current of 139.6 A on a 10/1000 µs waveform. This value is measured at the device terminals under standardized test conditions and defines the upper voltage limit imposed on protected circuits during surge events. The SMDJ13CA maintains this clamping performance consistently across its specified operating temperature range.
Is the SMDJ13CA suitable for protecting CAN bus lines in automotive applications?
Yes, the SMDJ13CA is widely used for CAN FD and classical CAN bus protection due to its bidirectional symmetry, 13.0 V VRWM matching typical 12 V system nominal voltage, and ability to clamp transients to ≤21.5 V-well below the 36 V absolute maximum rating of most CAN transceivers. Its DO-214AB package supports automated placement, and its 3000 W rating meets ISO 16750-2 and ISO 7637-2 surge requirements. The SMDJ13CA is explicitly referenced in AOS application notes for automotive data line protection.
Does the SMDJ13CA have a defined pinout or polarity marking?
No-the SMDJ13CA is a bidirectional TVS diode and does not feature a cathode band or polarity marking. Unlike unidirectional variants (e.g., SMDJ13A), the SMDJ13CA's internal structure allows symmetrical clamping in both directions, so either terminal functions identically. This eliminates orientation concerns during PCB assembly and simplifies layout for AC-coupled or floating signal paths. The SMDJ13CA's DO-214AB package contains two identical terminals with no functional distinction.
What is the thermal resistance specification for the SMDJ13CA?
The SMDJ13CA has a typical junction-to-lead thermal resistance (RθJL) of 15 °C/W and a junction-to-ambient thermal resistance (RθJA) of 75 °C/W, measured with 8.0 mm × 8.0 mm copper pads per terminal. These values assume standard JEDEC test conditions and define the device's steady-state and transient thermal performance. Proper PCB copper area is essential to realize the rated 3000 W surge capability; undersized pads will increase RθJA and reduce effective PPPM. The SMDJ13CA's thermal design enables reliable operation up to +150 °C junction temperature.
How does the SMDJ13CA compare to the SMDJ13A in terms of electrical behavior?
The SMDJ13CA is the bidirectional version of the SMDJ13A unidirectional TVS diode. Both share identical VRWM (13.0 V), VBR (14.4–15.9 V), VC (21.5 V), and PPPM (3000 W) ratings-but the SMDJ13A clamps only in reverse bias and conducts forward current freely, whereas the SMDJ13CA clamps symmetrically in both polarities. The SMDJ13CA omits the cathode band marking and is selected for AC, differential, or floating node protection; the SMDJ13A is used for DC rail protection where polarity is fixed. The SMDJ13CA's bidirectional behavior is intrinsic-not achieved via back-to-back configuration.
SMDJ13CA 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):
- 13V
- Voltage - Breakdown (Min):
- 14.4V
- Voltage - Clamping (Max) @ Ipp:
- 21.5V
- Current - Peak Pulse (10/1000µs):
- 139.6A
- 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
SMDJ13CA FAQ
1.How can I place an order for SMDJ13CA through Aetrix?
Please submit a Request for Quotation (RFQ) for SMDJ13CA 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 SMDJ13CA reliable?
The price and inventory of SMDJ13CA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMDJ13CA is usually 5 days.
3.What payment methods are accepted for SMDJ13CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMDJ13CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMDJ13CA?
SMDJ13CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMDJ13CA 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 SMDJ13CA?
For technical support, including SMDJ13CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMDJ13CA requirements.
6.How does Aetrix verify that SMDJ13CA is sourced from the original manufacturer or authorized distributors?
All SMDJ13CA 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 SMDJ13CA meets industry standards.
7.What is the process for return or replacement of SMDJ13CA?
All SMDJ13CA units undergo pre-shipment inspection (PSI). If there is an issue with SMDJ13CA, 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 SMDJ13CA part is unused and in its original packaging.
Return procedure for SMDJ13CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMDJ13CA Tags
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