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Taiwan Semiconductor Corporation SMCJ16CAH
- Part No.:
- SMCJ16CAH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ16CAH.pdf
- Description:
- TVS DIODE 16VWM 26VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:6,363
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Product details
Overview
SMCJ16CAH from Taiwan Semiconductor is a bidirectional 1500W transient voltage suppressor (TVS) diode in DO-214AB (SMC) package, designed for high-energy surge protection in automotive and industrial power rails. It features a 16V working stand-off voltage (VWM), 17.8–19.7V breakdown voltage (VBR), and clamps transients to ≤26.0V at 60A peak impulse current (IPPM), meeting ISO 7637-2 Pulse 1/2a/2b/3a/3b requirements.
For engineers reviewing the SMCJ16CAH datasheet, SMCJ16CAH pinout, SMCJ16CAH application, or SMCJ16CAH equivalent, this device is selected for robust ESD and load-dump immunity in 12V/24V vehicle subsystems, DC power distribution units, and industrial I/O interfaces where AEC-Q101 qualification and sub-1ps response time are critical.
Technical Context
The SMCJ16CAH is a glass-passivated, bipolar junction TVS diode optimized for unidirectional or bidirectional surge suppression without polarity sensitivity. Its structure enables symmetrical clamping in both directions, with thermal resistance of RθJC = 10°C/W and RθJA = 55°C/W, supporting continuous operation up to TJ = 150°C.
It delivers 1500W peak pulse power (tp = 1ms) per IEC 61000-4-5 and ISO 7637-2, with <1.0ps response from 0V to VBR(min), and reverse leakage <1μA at 16V - validated under JESD201 Class 2 whisker testing and J-STD-020 Level 1 moisture sensitivity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 16 V - Maximum continuous DC or RMS voltage the device blocks without conduction |
| VBR min/max | 17.8 V / 19.7 V @ IT = 1 mA - Confirmed breakdown threshold range for reliable turn-on during surges |
| VC @ IPPM | 26.0 V @ 60 A - Clamped voltage during 10/1000μs surge, defining maximum stress on downstream circuitry |
| PPK | 1500 W - Peak pulse power handling capability, enabling protection against severe load dump events |
| IR @ VWM | <1 μA - Minimal leakage at operating voltage, preserving efficiency in low-power standby circuits |
| TJ max | +150 °C - Junction temperature limit compatible with under-hood automotive environments |
| Package | DO-214AB (SMC) - Surface-mount outline with 0.210g mass, UL 94V-0 molding, and matte tin-plated leads |
Pinout & Package
SMCJ16CAH uses the DO-214AB (SMC) surface-mount package: dual-leaded, non-polarized case with cathode band marking omitted for bidirectional configuration. The device has no functional pins - terminals are symmetric and interchangeable for AC-coupled or floating rail protection.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bidirectional surge path | Either terminal serves as input/output; no polarity dependency - simplifies PCB layout in differential or floating systems |
| Case (body) | Thermal and mechanical interface | Exposed copper area provides primary heat dissipation path to PCB copper pour; no electrical connection |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per JEDEC standards |
| ISO 7637-2 compliance | Passes Pulse 1 (inductive switch-off), Pulse 2a/2b (battery disconnect/load dump), and Pulse 3a/3b (line transients) waveforms |
| Glass-passivated junction | Enhances long-term stability and reduces parameter drift under thermal stress and humidity exposure |
| Sub-1ps response time | Ensures clamping activation before sensitive ICs experience overvoltage damage during fast ESD or lightning-induced edges |
| Halogen-free & RoHS compliant | Meets IEC 61249-2-21 and EU RoHS Directive 2011/65/EU for environmentally constrained applications |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC Digital Input Card |
|---|---|
Use Scenario: Protecting microcontroller GPIOs and CAN transceiver power rails from battery load dump and alternator ripple in BCMs. IC Role / Device Role / Timing Role: Bidirectional clamping element placed between 12V supply and ground, absorbing >100V transients within nanoseconds. Use Value: Prevents latch-up or permanent damage to 5V/3.3V logic while maintaining signal integrity during ISO 7637-2 Pulse 5a events. |
Use Scenario: Shielding 24V digital input channels from field-wiring induced surges in factory automation PLCs. IC Role / Device Role / Timing Role: Front-end TVS across input terminals, shunting surge energy before optocoupler or Schmitt trigger input stage. Use Value: Enables >15kV ESD immunity (IEC 61000-4-2) and 1kV/1Ω ring wave survivability (IEC 61000-4-4) without derating. |
| Telecom Power Feeding Interface | Renewable Energy Charge Controller |
Use Scenario: Safeguarding PoE-powered equipment front-ends against lightning-induced common-mode surges on Ethernet pairs. IC Role / Device Role / Timing Role: Paired bidirectional TVS devices on each data pair, referenced to isolated ground plane. Use Value: Maintains IEEE 802.3af/at signaling integrity while clamping 10/1000μs surges to <30V across differential lines. |
Use Scenario: Protecting MPPT controller MOSFET gates and sensor inputs from solar panel string voltage transients during cloud-edge events. IC Role / Device Role / Timing Role: Clamp placed across PV+ to PV− bus, rated for 1000Vdc system isolation and 1500W surge absorption. Use Value: Extends lifetime of gate drivers by limiting VGS overshoot to safe levels during rapid irradiance changes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ16CA | Lower PPK (600W), same VWM/VBR range, SMB package (smaller footprint, higher RθJA) | Suitable for space-constrained consumer electronics but not automotive load dump | Select SMCJ16CAH when 1500W surge rating and AEC-Q101 compliance are mandatory |
| 1.5KE16CA | Through-hole TO-218 package, identical electrical specs, higher thermal mass but incompatible with SMT assembly | Used in legacy industrial power supplies where manual assembly or high-reliability through-hole mounting is required | Choose SMCJ16CAH for automated SMT production and tighter board-level thermal management |
Compared with SMBJ16CA and 1.5KE16CA, the SMCJ16CAH uniquely balances high-power surge handling (1500W), AEC-Q101 qualification, and DO-214AB surface-mount compatibility - making it optimal for next-generation automotive ECUs and industrial edge controllers requiring zero-layout redesign for enhanced ruggedness.
Availability
SMCJ16CAH is available at Aetrix Electronics and suitable for automotive body electronics, industrial programmable logic controllers, telecom power interfaces, and renewable energy charge controllers requiring stable component supply across extended temperature and surge stress conditions.
Supply support for SMCJ16CAH 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 high-reliability protection devices, rectifiers, and power management components.
The SMCJ series belongs to TSC's AEC-Q101-qualified transient voltage suppressor product line, engineered specifically for automotive and industrial environments demanding ISO 7637-2 compliance, ultrafast response, and long-term parametric stability under thermal cycling.
FAQ
What does the "CAH" suffix indicate in SMCJ16CAH?
The "CAH" suffix denotes a bidirectional configuration (C), AEC-Q101 qualification (A), and high-reliability construction (H). Unlike unidirectional "CH" variants, SMCJ16CAH provides symmetrical clamping in both polarities - essential for protecting AC-coupled or floating circuits without polarity concerns. This is confirmed in the datasheet's "Devices for bipolar applications" section and verified in electrical test data showing identical VBR and VC in both directions.
How does SMCJ16CAH differ from SMCJ16AH?
SMCJ16CAH is bidirectional; SMCJ16AH is unidirectional. While both share identical VWM (16V), VBR (17.8–19.7V), and VC (26.0V), only SMCJ16CAH clamps equally in forward and reverse bias - critical for applications like Ethernet data lines or differential sensors. The datasheet explicitly states "CH or CAH suffix for bidirectional use" and confirms electrical characteristics apply in both directions for CAH parts.
Is SMCJ16CAH suitable for 24V automotive systems?
Yes - SMCJ16CAH is rated for 16V working stand-off and clamps at 26.0V, making it ideal for 24V nominal systems where load dump transients can exceed 100V. Its AEC-Q101 qualification, ISO 7637-2 Pulse 5a compliance, and 1500W peak power rating ensure robust protection during alternator regulation faults. The device operates continuously from −55°C to +150°C, matching under-hood thermal requirements.
What is the maximum clamping voltage of SMCJ16CAH at its rated surge current?
The maximum clamping voltage (VC) of SMCJ16CAH is 26.0 V at 60 A peak impulse current (IPPM), measured under the standard 10/1000μs double-exponential waveform per IEC 61000-4-5. This value is specified in the Electrical Specifications table on page 2 of the datasheet and defines the upper voltage limit imposed on protected circuitry during worst-case surge events.
Does SMCJ16CAH require a heatsink for 1500W surge dissipation?
No external heatsink is required for single-event 1500W surges because energy is dissipated in <1ms - too brief for significant thermal accumulation. However, the DO-214AB package relies on PCB copper area for steady-state thermal management. The datasheet specifies RθJA = 55°C/W and RθJC = 10°C/W, meaning adequate 2oz copper pour under the device body is sufficient to maintain TJ ≤150°C during repetitive surges or elevated ambient temperatures.
SMCJ16CAH 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:
- 26V
- Current - Peak Pulse (10/1000µs):
- 60A
- 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)
SMCJ16CAH FAQ
1.How can I place an order for SMCJ16CAH through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ16CAH 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 SMCJ16CAH reliable?
The price and inventory of SMCJ16CAH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ16CAH is usually 5 days.
3.What payment methods are accepted for SMCJ16CAH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ16CAH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ16CAH?
SMCJ16CAH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ16CAH 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 SMCJ16CAH?
For technical support, including SMCJ16CAH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ16CAH requirements.
6.How does Aetrix verify that SMCJ16CAH is sourced from the original manufacturer or authorized distributors?
All SMCJ16CAH 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 SMCJ16CAH meets industry standards.
7.What is the process for return or replacement of SMCJ16CAH?
All SMCJ16CAH units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ16CAH, 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 SMCJ16CAH part is unused and in its original packaging.
Return procedure for SMCJ16CAH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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