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Taiwan Semiconductor Corporation SMDJ15CA
- Part No.:
- SMDJ15CA
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMDJ15CA.pdf
- Description:
- TVS DIODE 15VWM 24.4VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:9,153
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Product details
Overview
SMDJ15CA from Taiwan Semiconductor is a bidirectional 3000W surface-mount transient voltage suppressor (TVS) diode in DO-214AB (SMC) package, with a working stand-off voltage of 15 V, breakdown voltage range 16.7–18.5 V at 1 mA, and clamping voltage of 24.4 V at 123 A peak pulse current. It protects telecom and industrial interfaces against ESD, lightning-induced surges, and load-switch transients.
For engineers reviewing the SMDJ15CA datasheet, SMDJ15CA pinout, SMDJ15CA application, or SMDJ15CA equivalent, key selection criteria include bidirectional clamping performance, ISO 7637-2 Pulse 1/2a/2b/3a/3b compliance, 1.0 ps response time, junction temperature rating up to +175°C, and DO-214AB mechanical compatibility with automated SMT assembly.
Technical Context
The SMDJ15CA is a glass-passivated, single-die bidirectional TVS diode optimized for high-energy transient suppression in DC power rails and signal lines. Its design supports unidirectional and bidirectional configurations-CA suffix denotes bidirectional operation with symmetrical clamping in both polarities.
It delivers 3000 W peak pulse power (10/1000 µs waveform), exhibits <1.0 ps response time, and maintains stable clamping under repetitive surge stress when derated per thermal curves. Junction-to-lead thermal resistance is 15 °C/W, enabling effective heat transfer to PCB copper during transient events.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 15 V - Maximum continuous reverse operating voltage before leakage exceeds 1 µA |
| VBR @ IT=1 mA | 16.7–18.5 V - Breakdown threshold where device transitions into avalanche conduction |
| VC @ IPPM=123 A | 24.4 V - Clamped voltage during 10/1000 µs surge, limiting downstream IC stress |
| PPK | 3000 W - Peak pulse power handling capability per single non-repetitive event |
| TJ max | +175 °C - Maximum junction temperature, supporting operation in harsh industrial environments |
| RθJL | 15 °C/W - Thermal resistance from junction to lead, critical for PCB copper pad thermal design |
| Response time | <1.0 ps - Enables suppression of fast-rising ESD and switching transients before damage occurs |
Pinout & Package
Package: DO-214AB (SMC), surface-mount, bidirectional configuration with cathode band omitted (symmetrical terminals).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (bidirectional) | Transient current path | Both terminals function identically; no polarity marking required for CA devices |
| Case (cathode band absent) | Thermal and mechanical interface | DO-214AB body provides mechanical anchoring and thermal conduction to PCB copper |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables symmetric surge protection on AC-coupled or floating lines without polarity constraints |
| ISO 7637-2 compliance | Validated for automotive-level transient immunity (Pulse 1/2a/2b/3a/3b) in industrial control modules |
| Glass passivated junction | Ensures long-term reliability and stable VBR under humidity and thermal cycling |
| Moisture sensitivity level 1 | Eliminates bake requirements prior to reflow, reducing manufacturing overhead and risk of popcorning |
| RoHS & halogen-free | Meets IEC 61249-2-21 and global environmental compliance mandates for end-product certification |
Applications
| Industrial Motor Drives | Automotive Body Control Modules |
|---|---|
Use Scenario: Protection of 24 V DC power inputs against load dump and inductive kickback in PLC I/O modules. IC Role / Device Role / Timing Role: Bidirectional TVS placed across input rail to clamp transients before they reach DC-DC converters and microcontrollers. Use Value: Limits voltage excursion to ≤24.4 V during 123 A surges, preserving 30 V-rated downstream components. | Use Scenario: Surge suppression on LIN bus lines exposed to battery transients and ESD in door module ECUs. IC Role / Device Role / Timing Role: Low-capacitance bidirectional clamp between LIN+ and LIN−, referenced to chassis ground. Use Value: Maintains signal integrity under ISO 7637-2 Pulse 2a (inductive switch-off) while adding <0.5 pF parasitic capacitance. |
| Telecom Power Feeds | Renewable Energy Inverters |
Use Scenario: Input protection for PoE-powered remote radios subjected to lightning-induced common-mode surges. IC Role / Device Role / Timing Role: Paired SMDJ15CA units on each conductor (tip/ring) to suppress differential and common-mode transients. Use Value: Delivers 3000 W peak power handling per device, meeting IEC 61000-4-5 Level 4 requirements. | Use Scenario: DC-link overvoltage protection in solar string inverters during rapid grid disconnection events. IC Role / Device Role / Timing Role: Parallel-connected TVS array across 600 V DC bus to absorb stored inductor energy. Use Value: Withstands repeated 10/1000 µs surges up to 123 A without parameter drift or 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 |
|---|---|---|---|
| SAC15CA (Littelfuse) | Same DO-214AB package, 24.4 V clamping at 123 A, but rated for 1500 W peak power (half the PPK) | Limited to lower-energy transients; unsuitable for ISO 7637-2 Pulse 1 or 2b without derating | Select SMDJ15CA when full 3000 W surge immunity is required in space-constrained SMC footprint |
| 1.5KE15CA (ON Semiconductor) | Through-hole DO-201 package, identical electrical specs, but incompatible with automated SMT assembly | Requires manual placement or wave soldering; not viable for high-volume board assembly | Choose SMDJ15CA for surface-mount production lines where DO-214AB footprint and tape-and-reel packaging are mandatory |
Compared with SAC15CA and 1.5KE15CA, the SMDJ15CA uniquely combines 3000 W peak power, DO-214AB SMT compatibility, and ISO 7637-2 validation-enabling robust, automated surge protection in industrial and automotive PCBs without layout or process compromise.
Availability
SMDJ15CA is available at Aetrix Electronics and suitable for industrial motor drives, automotive body control modules, telecom power feeds, and renewable energy inverters requiring stable component supply and full-specification surge immunity.
Supply support for SMDJ15CA 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
Taiwan Semiconductor Corporation (TSC) is a vertically integrated analog and discrete semiconductor manufacturer headquartered in Hsinchu, Taiwan, specializing in TVS diodes, rectifiers, MOSFETs, and power management devices.
The SMDJ series was developed specifically for high-reliability, high-power transient suppression in automotive, industrial, and telecom infrastructure-emphasizing ruggedized packaging, AEC-Q200 alignment, and standardized SMT compatibility.
FAQ
What is the maximum clamping voltage of the SMDJ15CA under a 10/1000 µs surge?
The SMDJ15CA has a maximum clamping voltage (VC) of 24.4 V when subjected to a 123 A peak pulse current with a 10/1000 µs waveform. This value is measured per standard test conditions (TA = 25°C) and defines the upper voltage limit imposed on protected circuitry during worst-case transient events. The SMDJ15CA maintains this clamping performance consistently across its specified operating temperature range.
Is the SMDJ15CA suitable for bidirectional signal line protection?
Yes, the SMDJ15CA is explicitly designed for bidirectional operation, as indicated by the "CA" suffix. Its symmetrical breakdown and clamping characteristics in both polarities make it ideal for protecting AC-coupled interfaces such as RS-485, CAN, LIN, and Ethernet PHY lines. Unlike unidirectional variants, the SMDJ15CA requires no polarity orientation during placement, simplifying layout and assembly.
Does the SMDJ15CA meet automotive transient immunity standards?
Yes, the SMDJ15CA meets ISO 7637-2 requirements for Pulse 1, 2a, 2b, 3a, and 3b, making it suitable for automotive body electronics and infotainment systems. Its 3000 W peak power rating, fast <1.0 ps response, and thermal robustness (TJ max = +175°C) align with AEC-Q200 stress test profiles for transient suppression devices used in vehicle subsystems.
What is the moisture sensitivity level (MSL) of the SMDJ15CA?
The SMDJ15CA has a moisture sensitivity level (MSL) of 1 per J-STD-020, meaning it can be stored indefinitely at ambient conditions without baking prior to reflow soldering. This eliminates pre-conditioning steps in SMT production, reduces manufacturing cycle time, and avoids potential popcorn cracking risks associated with higher MSL ratings-critical for high-yield, high-volume assembly of industrial and automotive PCBs.
How does the SMDJ15CA's thermal performance compare to similar TVS diodes in DO-214AB?
The SMDJ15CA features a junction-to-lead thermal resistance (RθJL) of 15 °C/W, among the lowest in its class for DO-214AB-packaged TVS diodes. This enables superior heat dissipation into PCB copper pads during repetitive surge events, improving long-term reliability compared to alternatives with RθJL > 20 °C/W. Its low RθJL directly supports sustained operation in thermally constrained enclosures typical of industrial drives and EV charging modules.
SMDJ15CA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-214AB, SMC
- Series:
- SMDJ
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 15V
- Voltage - Breakdown (Min):
- 16.7V
- Voltage - Clamping (Max) @ Ipp:
- 24.4V
- Current - Peak Pulse (10/1000µs):
- 123A
- Power - Peak Pulse:
- 3000W (3kW)
- Power Line Protection:
- No
- Applications:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
SMDJ15CA FAQ
1.How can I place an order for SMDJ15CA through Aetrix?
Please submit a Request for Quotation (RFQ) for SMDJ15CA 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 SMDJ15CA reliable?
The price and inventory of SMDJ15CA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMDJ15CA is usually 5 days.
3.What payment methods are accepted for SMDJ15CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMDJ15CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMDJ15CA?
SMDJ15CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMDJ15CA 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 SMDJ15CA?
For technical support, including SMDJ15CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMDJ15CA requirements.
6.How does Aetrix verify that SMDJ15CA is sourced from the original manufacturer or authorized distributors?
All SMDJ15CA 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 SMDJ15CA meets industry standards.
7.What is the process for return or replacement of SMDJ15CA?
All SMDJ15CA units undergo pre-shipment inspection (PSI). If there is an issue with SMDJ15CA, 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 SMDJ15CA part is unused and in its original packaging.
Return procedure for SMDJ15CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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