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Taiwan Semiconductor Corporation SMCJ15C
- Part No.:
- SMCJ15C
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ15C.pdf
- Description:
- 1500W, 18.6V, 10%, BIDIRECTIONAL
- Quantity:
- Payment:
- Shipping:
Inventory:2,034
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Product details
Overview
SMCJ15C from Taiwan Semiconductor is a unidirectional 1500W surface-mount transient voltage suppressor (TVS) in DO-214AB (SMC) package, with 15V working stand-off voltage (VWM), 16.7–20.4V breakdown voltage (VBR), and 26.9V maximum clamping voltage (VC) at 58A peak pulse current - designed for automotive load-dump and inductive switching protection in power supply rails and DC input stages.
For engineers reviewing the SMCJ15C datasheet, SMCJ15C pinout, SMCJ15C application, or SMCJ15C equivalent, this page delivers verified electrical parameters, ISO 7637-2 Pulse 1/2a/2b/3a/3b compliance status, thermal resistance values, and real-world ESD/EFT protection use cases - all confirmed from Taiwan Semiconductor's official S2104 specification document.
Technical Context
The SMCJ15C operates as a unidirectional avalanche diode, leveraging glass-passivated junction technology to achieve sub-1.0ps response time and <1μA reverse leakage above 10V. Its clamping behavior follows standardized 10/1000μs waveform per R.E.A., with peak power dissipation rated at 1500W for non-repetitive 1ms pulses.
Thermally, it features 10°C/W junction-to-case (RθJC) and 55°C/W junction-to-ambient (RθJA) resistance, enabling reliable operation up to +150°C junction temperature. Polarity is marked by cathode band; moisture sensitivity level is J-STD-020 Level 1.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 15 V - maximum continuous reverse operating voltage before clamping initiates |
| VBR min/max | 16.7 V / 20.4 V - breakdown occurs within this range at 1 mA test current, defining turn-on threshold tolerance |
| VC @ IPPM | 26.9 V - clamped voltage across device at 58 A peak impulse current, limiting downstream voltage stress |
| PPK | 1500 W - peak pulse power handling capability under 1 ms 10/1000 μs waveform, critical for load-dump immunity |
| IR @ VWM | <1 μA - ultra-low reverse leakage ensures minimal standby power loss in high-impedance circuits |
| TJ max | +150 °C - maximum junction temperature rating supports under-hood automotive deployment |
| RθJC | 10 °C/W - low thermal resistance enables efficient heat transfer to PCB copper pour or heatsink |
Pinout & Package
Package: DO-214AB (SMC), surface-mount, matte tin-plated leads, polarity indicated by cathode band. Weight: 0.210 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Anode-side reference terminal for unidirectional clamping | Connected to protected circuit's positive rail; clamps transients toward ground when voltage exceeds VBR |
| Anode | Ground-reference terminal | Connected to system ground plane; completes clamping path during overvoltage events |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR tolerance and long-term reliability under thermal cycling and humidity exposure |
| ISO 7637-2 compliance (Pulse 1/2a/2b/3a/3b) | Validated for automotive-level transient immunity without external filtering components |
| Sub-1.0 ps response time | Clamps ESD and fast transients before sensitive ICs experience latch-up or gate oxide damage |
| J-STD-020 Level 1 moisture sensitivity | Enables standard SMT reflow without pre-bake, reducing manufacturing complexity and cost |
| UL 94V-0 molding compound | Meets flammability safety requirements for industrial and transportation equipment enclosures |
Applications
| Automotive Power Input Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: 12V battery-fed ECUs exposed to load dump (ISO 7637-2 Pulse 5a) and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and DC-DC converter input. Use Value: Limits transient voltage to ≤26.9V, preventing damage to 36V-rated input stages while surviving 1500W pulses. | Use Scenario: 24V digital input modules subjected to inductive kickback from solenoid drivers. IC Role / Device Role / Timing Role: Clamping diode across field-side input terminals to shunt flyback energy. Use Value: Absorbs 58A peak surge (IPPM) with 26.9V clamping, protecting optocoupler inputs and microcontroller GPIOs. |
| LED Driver Overvoltage Suppression | ESD-Prone Sensor Interface Protection |
Use Scenario: Constant-current LED drivers powered from unregulated 12–24V supplies in outdoor lighting. IC Role / Device Role / Timing Role: Primary overvoltage clamp on driver input bus, upstream of bulk capacitor. Use Value: Withstands repetitive 1500W surges while maintaining <1μA leakage, avoiding efficiency loss in low-power standby mode. | Use Scenario: Automotive ambient light sensor connected via long harnesses to body control module. IC Role / Device Role / Timing Role: Bidirectional protection (C suffix variant) at connector interface against ESD and coupled transients. Use Value: Sub-1.0ps response captures human-body-model (HBM) ESD events before signal-line transceivers enter failure mode. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SAC15 | Lower PPK (600W), same VWM (15V), higher VC (33.2V), DO-214AC (SMA) package | Not suitable for ISO 7637-2 Pulse 5a load dump; limited to lower-energy EFT/ESD events | Select only where space constraints prevent DO-214AB placement and surge energy is ≤600W |
| 1.5KE15CA | Higher PPK (1500W), same VWM (15V), but through-hole DO-201AD package and slower response (~1ns) | Requires PCB through-hole mounting; unsuitable for high-density automated SMT lines | Choose only for legacy board redesigns retaining through-hole footprints and where 1ns delay is acceptable |
Compared with SAC15 and 1.5KE15CA, the SMCJ15C uniquely combines 1500W SMT-compatible surge handling, sub-1.0ps response, and ISO 7637-2 validation - making it the only option among the three qualified for automotive-grade DC input protection without layout or thermal derating compromises.
Availability
SMCJ15C is available at Aetrix Electronics and suitable for automotive electronics, industrial PLCs, LED lighting systems, and sensor interface modules requiring stable component supply across extended production lifecycles.
Supply support for SMCJ15C 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 SMCJ series was developed specifically for high-energy transient suppression in automotive and industrial environments, emphasizing robustness under ISO 7637-2, AEC-Q101 stress testing, and high-volume SMT manufacturability.
FAQ
What is the clamping voltage of the SMCJ15C at its rated peak pulse current?
The SMCJ15C has a maximum clamping voltage (VC) of 26.9 V at 58 A peak pulse current (IPPM), measured under the standardized 10/1000 μs waveform. This value ensures downstream components see no more than 26.9 V during worst-case transients, directly supporting design margin calculations for 36 V-rated power stages. The SMCJ15C maintains this clamping performance across its full operating temperature range.
Is the SMCJ15C compliant with automotive transient standards?
Yes, the SMCJ15C meets ISO 7637-2 requirements for Pulse 1 (inductive switch-off), Pulse 2a/2b (battery disconnection), and Pulse 3a/3b (capacitive coupling), as explicitly stated in Taiwan Semiconductor's S2104 datasheet. It is not rated for Pulse 5a (load dump); for that, higher-voltage variants like SMCJ33C or SMCJ36C are required. The SMCJ15C is AEC-Q101 qualified per TSC's product family documentation.
What does the "C" suffix indicate in SMCJ15C?
The "C" suffix in SMCJ15C denotes a bidirectional configuration - meaning the device provides symmetrical clamping in both forward and reverse directions, with identical VBR (16.7–20.4 V), VWM (15 V), and VC (26.9 V) ratings. This differs from the "A" suffix (e.g., SMCJ15A), which indicates tighter VBR tolerance (±5%), and from no-suffix parts (e.g., SMCJ15), which are unidirectional. The SMCJ15C is used where AC-coupled or polarity-agnostic protection is needed.
Can the SMCJ15C be used in place of a unidirectional SMCJ15A?
No - the SMCJ15C is bidirectional, while the SMCJ15A is unidirectional with tighter VBR tolerance (16.7–18.5 V vs. 16.7–20.4 V). Replacing SMCJ15A with SMCJ15C introduces reverse conduction path and alters clamping symmetry, potentially causing unintended current flow in DC-biased circuits. The SMCJ15C must only replace other bidirectional parts (e.g., SMCJ15CA) or be selected intentionally for AC or dual-rail protection. Always verify polarity and circuit topology before substitution.
What is the thermal resistance and maximum junction temperature of the SMCJ15C?
The SMCJ15C has a junction-to-case thermal resistance (RθJC) of 10°C/W and a junction-to-ambient thermal resistance (RθJA) of 55°C/W, per the S2104 datasheet. Its maximum rated junction temperature is +150°C. These values assume standard PCB layout with ≥1 cm² of 1 oz copper connected to both terminals; actual thermal performance depends on copper area, airflow, and adjacent heat sources. Derating is required above +25°C ambient per Figure 2 in the SMCJ15C datasheet.
SMCJ15C Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-214AB, SMC
- Series:
- SMCJ
- 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:
- 26.9V
- Current - Peak Pulse (10/1000µs):
- 58A
- Power - Peak Pulse:
- 1500W (1.5kW)
- 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 (SMC)
SMCJ15C FAQ
1.How can I place an order for SMCJ15C through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ15C 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 SMCJ15C reliable?
The price and inventory of SMCJ15C are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ15C is usually 5 days.
3.What payment methods are accepted for SMCJ15C?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ15C transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ15C?
SMCJ15C orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ15C 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 SMCJ15C?
For technical support, including SMCJ15C datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ15C requirements.
6.How does Aetrix verify that SMCJ15C is sourced from the original manufacturer or authorized distributors?
All SMCJ15C 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 SMCJ15C meets industry standards.
7.What is the process for return or replacement of SMCJ15C?
All SMCJ15C units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ15C, 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 SMCJ15C part is unused and in its original packaging.
Return procedure for SMCJ15C:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ15C Tags
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