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Taiwan Semiconductor Corporation SMBJ16A
- Part No.:
- SMBJ16A
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ16A.pdf
- Description:
- TVS DIODE 16VWM 26VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:7,740
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Product details
Overview
SMBJ16A from Taiwan Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode designed for robust ESD and surge protection in DC power rails and signal lines. It features a 16 V working stand-off voltage (VWM), 17.8–19.7 V breakdown voltage (VBR), 24.2 A peak pulse current (IPP), 26.0 V maximum clamping voltage (VC), and 600 W peak pulse power (PPK) with <1.0 ps response time - deployed in automotive body control modules to protect CAN transceivers from ISO 7637-2 Pulse 1/2b transients.
For engineers reviewing the SMBJ16A datasheet, SMBJ16A pinout, SMBJ16A application, or SMBJ16A equivalent, key selection criteria include clamping performance under 10/1000 µs surges, leakage current at 16 V (<1 µA), unidirectional polarity marking, DO-214AA (SMB) package compatibility with automated SMT lines, and compliance with ISO 7637-2 for automotive load-dump immunity.
Technical Context
The SMBJ16A operates as a unidirectional avalanche diode, triggering when reverse voltage exceeds its specified VBR range (17.8–19.7 V @ 1 mA), then clamping transient energy to ≤26.0 V at 24.2 A. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1 µA at VWM = 16 V).
Thermally, it supports operation from –55 °C to +150 °C with RθJA = 55 °C/W and RθJC = 10 °C/W, enabling reliable performance in enclosed automotive ECUs. It meets JESD201 Class 2 whisker resistance and J-STD-020 Moisture Sensitivity Level 1.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 16 V - Maximum continuous reverse operating voltage before conduction begins; defines safe DC rail margin. |
| VBR @ IT = 1 mA | 17.8–19.7 V - Measured breakdown threshold; ensures predictable turn-on during overvoltage events. |
| VC @ IPP = 24.2 A | 26.0 V - Clamped voltage during 10/1000 µs surge; determines protected IC's maximum stress level. |
| PPK | 600 W - Peak pulse power handling per single transient; validates suitability for ISO 7637-2 Pulse 2b (50 V, 100 ms). |
| ID @ VWM | <1 µA - Reverse leakage at rated stand-off; minimizes standby power loss in battery-critical systems. |
| Package | DO-214AA (SMB) - Standardized 2-pin SMT outline; compatible with IPC-7351B footprint and reflow profiles. |
Pinout & Package
DO-214AA (SMB) package: molded plastic case with matte tin-plated leads, cathode band marking on one end for unidirectional polarity identification. Weight ≈ 0.090 g. UL 94V-0 rated molding compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to system ground or low-side return path; carries surge current during clamping. |
| Cathode | Reverse-biased input terminal | Connected to protected line (e.g., CAN_H); blocks normal operation up to 16 V, avalanches above VBR. |
Key Features
| Feature | Design Value |
|---|---|
| Clamping performance | VC = 26.0 V @ 24.2 A ensures downstream 3.3 V/5 V logic remains below absolute maximum ratings during surge. |
| Response speed | <1.0 ps junction response enables suppression before fast ESD pulses (IEC 61000-4-2) damage interface pins. |
| Automated assembly support | DO-214AA (SMB) footprint and matte tin plating meet J-STD-002 solderability standards for high-yield pick-and-place. |
| Automotive qualification | Meets ISO 7637-2 Pulse 1/2a/2b/3a/3b - validated for battery line and sensor interface protection in 12 V vehicle architectures. |
Applications
| Automotive Body Control Module | Industrial PLC Digital Input |
|---|---|
Use Scenario: Protecting LIN bus transceivers from load dump and alternator ripple in door module ECUs. IC Role / Device Role / Timing Role: Unidirectional TVS placed between LIN line and ground to clamp transients while preserving signal integrity. Use Value: Limits voltage seen by transceiver to ≤26.0 V during 100 V/50 ms load dump, preventing latch-up or oxide rupture. |
Use Scenario: Safeguarding 24 V digital input channels against field-wiring induced surges in factory automation controllers. IC Role / Device Role / Timing Role: Standoff protector on optocoupler input side, absorbing inductive kickback from solenoid switching. Use Value: Withstands 600 W surges without degradation, maintaining ≤1 µA leakage to avoid false triggering of 24 V logic thresholds. |
| LED Driver Power Rail | USB-C Port ESD Protection |
Use Scenario: Securing constant-current LED driver IC supply inputs against hot-swap and capacitor discharge transients. IC Role / Device Role / Timing Role: Primary overvoltage clamp on 12–24 V input rail, placed upstream of buck controller. Use Value: Clamps 10/1000 µs surges to 26.0 V, keeping driver IC VIN within 30 V absolute max rating across temperature. |
Use Scenario: Secondary-level ESD protection on USB-C VBUS line in portable docking stations. IC Role / Device Role / Timing Role: High-power backup suppressor after primary polymer TVS, handling rare high-energy events. Use Value: Delivers 600 W pulse rating and <1.0 ps response - complements low-capacitance front-end TVS to pass IEC 61000-4-2 ±15 kV contact discharge. |
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 | Bidirectional variant; symmetric VBR = 17.8–19.7 V, same VC = 26.0 V, but conducts in both polarities. | Required for AC-coupled or floating signal lines (e.g., RS-485, Ethernet PHY bias rails) where polarity reversal occurs. | Select SMBJ16CA only if bidirectional clamping is mandated; SMBJ16A offers lower leakage in DC-biased applications. |
| SMAJ16A | Lower PPK = 400 W, higher VC = 27.7 V @ 16.5 A, same DO-214AC (SMA) footprint but smaller thermal mass. | Suitable for cost-sensitive consumer electronics with lower surge severity (e.g., IEC 61000-4-5 Level 3), not ISO 7637-2 automotive. | Use SMAJ16A only where 400 W rating suffices; SMBJ16A provides 50% higher surge margin and tighter clamping for industrial/automotive use. |
Compared with SMBJ16CA and SMAJ16A, the SMBJ16A delivers optimal balance of 600 W surge capacity, 26.0 V clamping, and sub-µA leakage for unidirectional DC protection - making it preferred for automotive power rail and industrial I/O where reliability under repetitive transients is critical.
Availability
SMBJ16A is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC input protection, and LED driver power rail stabilization requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for SMBJ16A 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 since 1979.
The SMBJ series was engineered specifically for high-reliability transient suppression in automotive and industrial environments, emphasizing low clamping voltage, ISO 7637-2 compliance, and robust SMT manufacturability in DO-214AA packages.
FAQ
What is the maximum clamping voltage of SMBJ16A under a 10/1000 µs surge?
The SMBJ16A has a maximum clamping voltage (VC) of 26.0 V when subjected to its rated peak pulse current of 24.2 A using the standard 10/1000 µs waveform. This value is guaranteed across the full operating temperature range (–55 °C to +150 °C) and ensures protected circuitry remains within safe voltage limits during surge events. The SMBJ16A achieves this with minimal voltage overshoot due to its fast <1.0 ps response time.
Is SMBJ16A suitable for protecting CAN bus lines in automotive applications?
Yes, SMBJ16A is widely used for CAN bus protection in 12 V automotive systems. Its 16 V working stand-off voltage aligns with nominal CAN_H/CAN_L common-mode range, and its 26.0 V clamping voltage stays well below the 40 V absolute maximum rating of most CAN transceivers. It meets ISO 7637-2 Pulse 2b requirements and is qualified for under-hood temperature operation up to +150 °C - critical for SMBJ16A deployment in body control modules and gateway ECUs.
How does SMBJ16A differ from SMBJ16 in terms of electrical performance?
The SMBJ16A offers tighter breakdown voltage tolerance (17.8–19.7 V) versus SMBJ16 (17.8–21.8 V), resulting in more consistent clamping behavior and lower VC (26.0 V vs. 28.8 V at rated IPP). This makes SMBJ16A preferable for designs requiring precise overvoltage thresholds and minimized stress on downstream ICs. Both share identical package, power rating (600 W), and thermal specs, but SMBJ16A's tighter VBR improves design margin in safety-critical applications.
What is the polarity configuration of SMBJ16A and how is it marked?
SMBJ16A is a unidirectional TVS diode with cathode-anode polarity. It is marked on the DO-214AA (SMB) package with a distinct cathode band (typically a white or black stripe) at the cathode end. During PCB layout, the banded end must connect to the line being protected (e.g., CAN_H), while the anode connects to ground - ensuring proper blocking of normal operating voltage and controlled avalanche during transients. This polarity is confirmed in TSC's marking diagram and mechanical drawings.
Does SMBJ16A comply with RoHS and halogen-free standards?
Yes, SMBJ16A is RoHS compliant and halogen-free per IEC 61249-2-21. The device uses lead-free matte tin plating on terminals and a halogen-free molding compound meeting UL 94V-0 flammability rating. These attributes are verified in TSC's official product documentation (Version R2104) and supported by material declarations available upon request - confirming SMBJ16A's suitability for environmentally regulated markets including EU automotive and industrial equipment.
SMBJ16A 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:
- 1
- Bidirectional Channels:
- -
- 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)
SMBJ16A FAQ
1.How can I place an order for SMBJ16A through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ16A 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 SMBJ16A reliable?
The price and inventory of SMBJ16A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ16A is usually 5 days.
3.What payment methods are accepted for SMBJ16A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ16A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ16A?
SMBJ16A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ16A 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 SMBJ16A?
For technical support, including SMBJ16A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ16A requirements.
6.How does Aetrix verify that SMBJ16A is sourced from the original manufacturer or authorized distributors?
All SMBJ16A 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 SMBJ16A meets industry standards.
7.What is the process for return or replacement of SMBJ16A?
All SMBJ16A units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ16A, 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 SMBJ16A part is unused and in its original packaging.
Return procedure for SMBJ16A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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