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Taiwan Semiconductor Corporation SMCJ16CH
- Part No.:
- SMCJ16CH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ16CH.pdf
- Description:
- 1500W, 19.8V, 10%, BIDIRECTIONAL
- Quantity:
- Payment:
- Shipping:
Inventory:9,812
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Product details
Overview
SMCJ16CH from Taiwan Semiconductor is a unidirectional 1500W transient voltage suppressor (TVS) diode in DO-214AB (SMC) package, with 16V working stand-off voltage (VWM), 17.8–21.8V breakdown voltage (VBR), and 28.8V maximum clamping voltage (VC) at 54A peak pulse current. It delivers AEC-Q101 qualification, ISO 7637-2 compliance (Pulse 1/2a/2b/3a/3b), and <1.0ps response time for automotive power line protection.
For engineers reviewing the SMCJ16CH datasheet, SMCJ16CH pinout, SMCJ16CH application, or SMCJ16CH equivalent, key selection criteria include clamping performance under 10/1000μs surge, unidirectional polarity marking, thermal resistance (RθJC = 10°C/W), and compatibility with automated SMT placement per J-STD-002 solderability standards.
Technical Context
The SMCJ16CH uses a glass-passivated silicon junction optimized for fast transient suppression in 12V automotive systems. Its unidirectional configuration provides forward conduction only during reverse overvoltage events, with VF = 3.5V at 100A IFSM - consistent with SMCJ5.0H–SMCJ90H series devices.
Designed for load-dump and ESD immunity, it meets stringent automotive EMC requirements including ISO 7637-2 Pulse 1 (inductive switch-off), Pulse 2a (battery disconnect), and Pulse 3b (capacitive coupling). Junction temperature range is –55°C to +150°C, supporting under-hood deployment.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 16 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR min/max | 17.8 V / 21.8 V - Breakdown occurs within this range at 1 mA test current, defining turn-on threshold |
| VC @ IPPM | 28.8 V - Clamped voltage across device at 54 A 10/1000μs surge, limiting downstream stress |
| PPK | 1500 W - Peak pulse power handling capability per single 1 ms transient event |
| RθJC | 10 °C/W - Thermal resistance from junction to case, enabling effective heatsinking via PCB copper |
| IR @ VWM | <1 μA - Reverse leakage ensures minimal standby power loss in always-on circuits |
| TJ max | +150 °C - Maximum junction temperature supports operation in high-ambient engine bay environments |
Pinout & Package
DO-214AB (SMC) surface-mount package with cathode band marking on one end; matte tin-plated leads compliant with J-STD-002 solderability and JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction path | Connected to system ground or low-side return in unidirectional TVS configuration |
| Cathode | Reverse-biased clamping node | Connected to protected line (e.g., 12V rail); cathode band identifies polarity for correct orientation |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing |
| ISO 7637-2 Pulse 1/2a/2b/3a/3b compliance | Guarantees robustness against real-world vehicle electrical transients without external filtering |
| Fast response time <1.0 ps | Clamps before sensitive ICs experience voltage overshoot, preserving signal integrity |
| Glass passivated junction | Enhances long-term stability and moisture resistance versus epoxy-passivated alternatives |
| Moisture sensitivity level 1 | Enables standard SMT reflow without baking, reducing manufacturing overhead |
Applications
| Automotive Power Distribution | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting 12V supply lines in body control modules (BCM) against load dump and alternator transients. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between battery input and DC-DC converter input stage. Use Value: Limits voltage to ≤28.8V during 10/1000μs surges, preventing damage to 36V-rated buck controllers and ensuring ASIL-B compliance. | Use Scenario: Safeguarding digital input channels of programmable logic controllers exposed to field wiring noise. IC Role / Device Role / Timing Role: Standoff protection on 24V optocoupler input side, absorbing inductive kickback from solenoid drivers. Use Value: Withstands repetitive 1A/100ms pulses while maintaining <1μA leakage, avoiding false triggering in high-impedance sensing circuits. |
| Telecom Power Feeds | Consumer Appliance Motor Control |
Use Scenario: Shielding PoE-powered Ethernet switches from lightning-induced surges on 48V DC inputs. IC Role / Device Role / Timing Role: Primary-level TVS on DC input bus prior to primary-side controller and bulk capacitor. Use Value: 1500W peak power rating handles multi-kV induced transients without degradation, meeting IEC 61000-4-5 Level 4 requirements. | Use Scenario: Suppressing commutation spikes in BLDC motor inverters used in HVAC compressors and washing machines. IC Role / Device Role / Timing Role: Parallel clamping across DC bus rails to limit dv/dt stress on IGBT gate drivers and MCU analog inputs. Use Value: 10°C/W junction-to-case thermal resistance enables direct thermal coupling to aluminum heatsink, sustaining >100,000 surge cycles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ16A | 600W peak power rating; SMB package (smaller footprint, higher RθJA) | Lower energy handling limits use to sub-10A surge environments | Select when board space is constrained and surge energy is ≤600W |
| TPSMA6L16A | 1500W rating but 100ns response time; lower VBR tolerance (16.7–18.5V) | Less precise clamping window may increase risk of false triggering in tight-margin designs | Prefer where faster layout turnaround outweighs need for ultra-low jitter clamping |
Compared with SMBJ16A and TPSMA6L16A, the SMCJ16CH offers superior thermal performance (RθJC = 10°C/W vs. ≥15°C/W), tighter VBR tolerance (±12% vs. ±15%), and proven ISO 7637-2 Pulse 2b immunity - making it optimal for high-reliability automotive front-end protection.
Availability
SMCJ16CH is available at Aetrix Electronics and suitable for automotive power distribution, industrial PLC I/O protection, telecom power feeds, and consumer appliance motor control requiring stable component supply across production lifecycles.
Supply support for SMCJ16CH 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, serving global automotive, industrial, and computing markets since 1979.
The SMCJ series was developed specifically for high-energy transient suppression in 12V/24V automotive systems, emphasizing AEC-Q101 reliability, ISO 7637-2 compliance, and robust thermal performance in surface-mount packages.
FAQ
What is the polarity configuration of the SMCJ16CH?
The SMCJ16CH is a unidirectional TVS diode, meaning it conducts only in reverse bias during overvoltage events. Its cathode band marks the terminal to be connected to the protected line (e.g., 12V rail), while the anode connects to ground. This configuration ensures forward conduction does not occur under normal operation, preserving system functionality.
Does the SMCJ16CH meet automotive qualification standards?
Yes, the SMCJ16CH is AEC-Q101 qualified and certified for automotive applications. It passes rigorous stress tests including temperature cycling, highly accelerated life testing (HALT), and ESD immunity per ISO 10605. Its design also satisfies ISO 7637-2 Pulse 1, 2a, 2b, 3a, and 3b requirements for 12V vehicle electrical systems.
What is the maximum clamping voltage of the SMCJ16CH under surge conditions?
The SMCJ16CH has a maximum clamping voltage (VC) of 28.8 V at 54 A peak pulse current (IPPM), tested with the standard 10/1000 μs double-exponential waveform. This value ensures downstream components rated for ≤36 V are protected during worst-case transients, such as load dump events in automotive environments.
How does the SMCJ16CH compare to bidirectional variants like SMCJ16CAH?
The SMCJ16CH is unidirectional, whereas SMCJ16CAH is bidirectional and symmetrical for AC-line or data-line protection. The SMCJ16CH exhibits forward voltage (VF) of 3.5 V at 100 A, while SMCJ16CAH has no defined VF due to symmetric behavior. Use SMCJ16CH for DC power rail protection where polarity is fixed and known.
Is the SMCJ16CH compatible with standard SMT reflow processes?
Yes, the SMCJ16CH has Moisture Sensitivity Level (MSL) 1 per J-STD-020, allowing indefinite floor life at ≤30°C/60% RH without dry-packaging or baking. Its matte tin-plated leads comply with J-STD-002 for solderability, supporting lead-free reflow profiles up to 260°C peak temperature with standard SAC305 paste.
SMCJ16CH 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):
- 16V
- Voltage - Breakdown (Min):
- 17.8V
- Voltage - Clamping (Max) @ Ipp:
- 28.8V
- Current - Peak Pulse (10/1000µs):
- 54A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
SMCJ16CH FAQ
1.How can I place an order for SMCJ16CH through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ16CH 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 SMCJ16CH reliable?
The price and inventory of SMCJ16CH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ16CH is usually 5 days.
3.What payment methods are accepted for SMCJ16CH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ16CH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ16CH?
SMCJ16CH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ16CH 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 SMCJ16CH?
For technical support, including SMCJ16CH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ16CH requirements.
6.How does Aetrix verify that SMCJ16CH is sourced from the original manufacturer or authorized distributors?
All SMCJ16CH 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 SMCJ16CH meets industry standards.
7.What is the process for return or replacement of SMCJ16CH?
All SMCJ16CH units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ16CH, 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 SMCJ16CH part is unused and in its original packaging.
Return procedure for SMCJ16CH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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