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Taiwan Semiconductor Corporation SMBJ16CA
- Part No.:
- SMBJ16CA
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ16CA.pdf
- Description:
- TVS DIODE 16VWM 26VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:5,873
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Product details
Overview
SMBJ16CA from Taiwan Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in DO-214AA (SMB) package, designed for high-energy ESD and surge protection in DC power lines and signal interfaces. It features a 16 V working stand-off voltage (VWM), 21.8 A peak pulse current (IPP), 28.8 V maximum clamping voltage (VC@IPP), and 600 W peak pulse power (PPK) with sub-1 ps response time.
For engineers reviewing the SMBJ16CA datasheet, SMBJ16CA pinout, SMBJ16CA application, or SMBJ16CA equivalent, key selection criteria include bidirectional clamping capability, ISO 7637-2 Pulse 1/2a/2b/3a/3b compliance, low leakage (<1 µA at 16 V), UL 94V-0 molding compound, and J-STD-020 Level 1 moisture sensitivity.
Technical Context
The SMBJ16CA implements a silicon avalanche diode structure with glass-passivated junction for stable breakdown behavior and repeatable clamping performance under repetitive transients. Its bidirectional configuration enables symmetric suppression of positive and negative polarity surges without external polarity management.
Thermal design is supported by a junction-to-ambient thermal resistance (RθJA) of 55 °C/W and junction-to-case (RθJC) of 10 °C/W, enabling reliable operation up to 150 °C junction temperature. The device meets automotive-grade transient immunity standards including ISO 7637-2 across all defined pulse waveforms.
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 / 21.8 V - Breakdown occurs within this range at 1 mA test current, defining turn-on threshold |
| VC@IPP | 28.8 V - Clamped voltage seen by protected circuit during 21.8 A 10/1000 µs surge |
| PPK | 600 W - Peak transient power dissipation capability per single non-repetitive event |
| ID@VWM | <1 µA - Leakage current at rated stand-off voltage ensures minimal standby power loss |
| TJ max | +150 °C - Maximum allowable junction temperature supports operation in under-hood or industrial environments |
| Package | DO-214AA (SMB) - Surface-mount outline with 0.090 g mass and JESD201 Class 2 whisker resistance |
Pinout & Package
DO-214AA (SMB) package: surface-mount, molded plastic case with cathode band marking; terminals are matte tin-plated leads compliant with J-STD-002 solderability requirements.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unmarked end) | Current entry point in reverse-biased mode | Connects to line being protected; forms symmetrical clamping path with cathode |
| Cathode (banded end) | Current exit point in reverse-biased mode | Connects to ground or return path; polarity marking confirms orientation for manual placement |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating lines without polarity constraints |
| Sub-1 ps response time | Clamps ESD events before sensitive ICs experience damaging overvoltage stress |
| ISO 7637-2 compliance | Validated for automotive load-dump and inductive-switching transient immunity (Pulse 1/2a/2b/3a/3b) |
| UL 94V-0 molding | Self-extinguishing encapsulant meets flammability safety requirements for enclosed systems |
| J-STD-020 Level 1 | Zero floor-life limitation allows unlimited storage and reflow without baking preconditioning |
Applications
| Automotive Power Line Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: 12 V battery rail in vehicle infotainment head units exposed to load dump and jump-start transients. IC Role / Device Role / Timing Role: TVS diode placed between power input and DC-DC converter input to clamp surges before regulation stage. Use Value: Limits voltage to ≤28.8 V during 21.8 A transients, preventing damage to downstream LDOs and microcontrollers. | Use Scenario: 4–20 mA current-loop sensor interface in factory automation PLC modules. IC Role / Device Role / Timing Role: Bidirectional TVS connected across loop terminals to absorb field-induced fast transients and ESD. Use Value: Symmetric clamping preserves loop integrity during ±2 kV contact ESD events per IEC 61000-4-2. |
| LED Driver Input Protection | USB-C Port VBUS Transient Suppression |
Use Scenario: Constant-current LED driver board powered from 24 V industrial supply with inductive switching noise. IC Role / Device Role / Timing Role: SMBJ16CA placed at input filter stage to shunt inductive kickback energy away from controller IC. Use Value: Withstands 600 W peak pulses and clamps to 28.8 V, protecting MOSFET gate drivers and current-sense amplifiers. | Use Scenario: USB-C receptacle on portable medical device requiring robust VBUS line protection against hot-plug surges. IC Role / Device Role / Timing Role: Bidirectional TVS installed between VBUS and GND to suppress ±15 kV air discharge per IEC 61000-4-2. Use Value: Sub-1 ps response ensures clamping before USB PD controller ICs latch or fail during insertion events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ16C | Same VWM (16 V), identical clamping (28.8 V), but marked as non-RoHS/non-halogen-free per legacy spec | Not suitable for new designs requiring IEC 61249-2-21 halogen-free compliance | Select SMBJ16CA when RoHS and halogen-free certifications are mandatory |
| SAC16 | Same DO-214AA package and 16 V VWM, but lower PPK (400 W) and higher VC (32.4 V) | Limited to lower-energy transients; insufficient for ISO 7637-2 Pulse 1 (load dump) | Choose SMBJ16CA where full 600 W surge rating and ISO 7637-2 validation are required |
Compared with SMBJ16C and SAC16, the SMBJ16CA delivers certified halogen-free construction, full 600 W surge handling, and documented ISO 7637-2 compliance-making it the preferred choice for automotive and industrial designs requiring traceable environmental and immunity qualifications.
Availability
SMBJ16CA is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface hardening, and LED driver input surge suppression requiring stable component supply and long-term lifecycle support.
Supply support for SMBJ16CA 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 consumer markets since 1979.
The SMBJ series was developed specifically for high-reliability transient suppression in harsh environments, emphasizing ISO 7637-2 compliance, tight parameter tolerances, and extended temperature operation from –55 °C to +150 °C.
FAQ
What is the clamping voltage of SMBJ16CA under a 10/1000 µs surge?
The SMBJ16CA has a maximum clamping voltage (VC) of 28.8 V when subjected to its rated peak pulse current of 21.8 A using the standard 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and guarantees the protected circuit sees no more than 28.8 V during such an event. The SMBJ16CA's consistent clamping performance is validated across production lots and temperature ranges from –55 °C to +125 °C.
Is SMBJ16CA unidirectional or bidirectional?
SMBJ16CA is a bidirectional TVS diode, indicated by the "CA" suffix per TSC's ordering convention. It provides symmetrical clamping for both positive and negative polarity transients without requiring external polarity alignment. This makes the SMBJ16CA ideal for protecting AC-coupled lines, differential buses, or floating grounds where voltage polarity reversal is possible.
Does SMBJ16CA meet automotive transient immunity standards?
Yes, the SMBJ16CA meets ISO 7637-2 for Pulse 1 (inductive load disconnect), Pulse 2a/2b (switching transients), and Pulse 3a/3b (line impedance stabilization network events). This compliance is explicitly stated in the official TSC SMBJ Series datasheet (Version R2104) and verified through standardized test setups. The SMBJ16CA is widely deployed in automotive body control modules and infotainment systems for this reason.
What is the maximum operating temperature for SMBJ16CA?
The SMBJ16CA has a maximum junction temperature (TJ) rating of +150 °C and a storage temperature range of –55 °C to +150 °C. Its thermal resistance values-RθJA = 55 °C/W and RθJC = 10 °C/W-enable reliable operation in under-hood environments and industrial enclosures without forced cooling. Derating curves in the SMBJ16CA datasheet define safe power limits above 25 °C ambient.
How does SMBJ16CA differ from SMBJ16A?
The SMBJ16CA is bidirectional, while SMBJ16A is unidirectional. Their breakdown voltages differ: SMBJ16CA has VBR min/max of 17.8 V / 21.8 V, whereas SMBJ16A is specified at 17.8 V / 19.7 V. Clamping voltage also differs-28.8 V for SMBJ16CA versus 26.0 V for SMBJ16A-due to structural asymmetry in the unidirectional variant. The SMBJ16CA must be used where polarity-agnostic protection is required.
SMBJ16CA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-214AA, SMB
- Series:
- SMBJ
- 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):
- 23.1A
- Power - Peak Pulse:
- 600W
- 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-214AA (SMB)
SMBJ16CA FAQ
1.How can I place an order for SMBJ16CA through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ16CA 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 SMBJ16CA reliable?
The price and inventory of SMBJ16CA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ16CA is usually 5 days.
3.What payment methods are accepted for SMBJ16CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ16CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ16CA?
SMBJ16CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ16CA 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 SMBJ16CA?
For technical support, including SMBJ16CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ16CA requirements.
6.How does Aetrix verify that SMBJ16CA is sourced from the original manufacturer or authorized distributors?
All SMBJ16CA 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 SMBJ16CA meets industry standards.
7.What is the process for return or replacement of SMBJ16CA?
All SMBJ16CA units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ16CA, 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 SMBJ16CA part is unused and in its original packaging.
Return procedure for SMBJ16CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ16CA Tags
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