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Taiwan Semiconductor Corporation SMBJ160
- Part No.:
- SMBJ160
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ160.pdf
- Description:
- 600W, 198V, 10%, UNIDIRECTIONAL,
- Quantity:
- Payment:
- Shipping:
Inventory:9,446
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Product details
Overview
SMBJ160 from Taiwan Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode designed for high-energy surge protection in DC power lines and signal interfaces. It features a 160 V working stand-off voltage (VWM), 178–218 V breakdown voltage (VBR), 2.2 A peak impulse current (IPP), and clamps transients to 287 V at 2.2 A with 600 W peak pulse power rating.
For engineers reviewing the SMBJ160 datasheet, SMBJ160 pinout, SMBJ160 application, or SMBJ160 equivalent, key selection criteria include its DO-214AA (SMB) package compatibility, unidirectional polarity marking, sub-1 ps response time, <1 µA leakage above 10 V, and compliance with ISO 7637-2 Pulse 1/2a/2b/3a/3b for automotive ESD and load-dump immunity.
Technical Context
The SMBJ160 operates as a silicon avalanche diode with glass-passivated junction, enabling fast clamping of transient overvoltages before sensitive downstream circuitry is damaged. Its unidirectional configuration provides forward conduction only during reverse-biased surge events, with VF = 5.0 V at 50 A for devices ≥ SMBJ100.
Thermal performance is defined by RθJC = 10 °C/W and RθJA = 55 °C/W, supporting operation from –55 °C to +150 °C junction temperature. It meets JESD201 Class 2 whisker resistance and UL 94V-0 flammability requirements in its DO-214AA molded package.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 160 V - Maximum continuous DC or RMS voltage the device blocks without conduction |
| VBR min/max | 178–218 V @ 1 mA - Confirmed avalanche onset range ensuring reliable turn-on during surges |
| VC @ IPP | 287 V @ 2.2 A - Clamped voltage during 10/1000 µs surge, defining maximum stress on protected IC |
| PPK | 600 W - Peak pulse power handling per single 10/1000 µs waveform, derated above 25 °C |
| ID @ VWM | ≤1 µA - Low leakage ensures minimal power loss and signal integrity in standby |
| Response time | <1.0 ps - Enables suppression before transient energy couples into system traces |
| TJ max | +150 °C - Supports under-hood automotive and industrial environments with sustained thermal load |
Pinout & Package
Package: DO-214AA (SMB), surface-mount, matte tin-plated leads, cathode band marked on cathode end. Weight: 0.090 g. Moisture sensitivity level: J-STD-020 Level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current path / Surge return path | Connected to ground or low-impedance return in unidirectional configuration; carries full IPP during clamping |
| Cathode | Protected line input / High-side connection | Connected to the line being protected (e.g., 12 V rail); reverse-biased during normal operation, avalanches during overvoltage |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR over lifetime and improved reliability vs. epoxy-passivated alternatives |
| ISO 7637-2 compliance | Validated for automotive Pulse 1 (inductive load dump), Pulse 2a/2b (battery disconnect), and Pulse 3a/3b (switching transients) |
| RoHS & halogen-free | Meets IEC 61249-2-21 and EU RoHS Directive for environmentally constrained designs |
| J-STD-020 Level 1 MSL | Enables standard SMT reflow without baking or special handling |
Applications
| Automotive Power Line Protection | Industrial DC Power Input |
|---|---|
Use Scenario: 12 V/24 V battery-fed ECUs exposed to load-dump pulses up to 120 V and ISO 7637-2 Pulse 1. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and chassis ground to clamp transients before they reach PMICs or microcontrollers. Use Value: Limits voltage seen by downstream components to ≤287 V during 2.2 A surges, preventing latch-up or gate oxide damage in 3.3 V/5 V logic. | Use Scenario: 48 V telecom or factory automation power supplies subject to lightning-induced surges and switching noise. IC Role / Device Role / Timing Role: Primary surge shunt on main DC input, coordinated with upstream fuses and downstream LC filters. Use Value: Absorbs 600 W transient energy without failure, maintaining system uptime where replacement access is limited or costly. |
| LED Driver Overvoltage Clamp | RS-485 Transceiver Port Protection |
Use Scenario: Constant-current LED drivers in street lighting subjected to induced surges from nearby AC mains or lightning. IC Role / Device Role / Timing Role: Parallel-connected TVS across driver output to prevent overvoltage damage to MOSFETs or current-sense resistors. Use Value: Clamps transients within <1 ps, avoiding false triggering of driver fault detection while sustaining 160 V nominal operation. | Use Scenario: RS-485 nodes in building automation systems exposed to EFT bursts and cable-coupled surges. IC Role / Device Role / Timing Role: Bidirectional protection not applicable here; SMBJ160 used on VCC rail or isolated power side of isolated transceivers. Use Value: Provides robust 160 V rail protection with <1 µA leakage, preserving bus bias stability and minimizing false data errors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ160A | Narrower VBR range (178–197 V), lower clamping voltage (259 V @ 2.4 A), same VWM and PPK | Better suited for tighter tolerance systems requiring lower VC margin; identical footprint and mounting | Select SMBJ160A when clamping voltage headroom is critical and VBR consistency matters more than absolute surge current capacity |
| SMCJ160A | DO-214AB (SMC) package, higher PPK (1500 W), same VWM/VBR/VC specs, larger footprint | Used where higher energy absorption is required and PCB space allows larger SMC package | Choose SMCJ160A only if system-level testing confirms >600 W surge exposure; otherwise SMBJ160 offers optimal size–performance balance |
Compared with SMBJ160A, the SMBJ160 trades slightly higher clamping (287 V vs. 259 V) for broader VBR tolerance (178–218 V), offering design margin against process variation; versus SMCJ160A, it delivers 40% smaller footprint at 600 W-ideal for space-constrained automotive modules and industrial sensors.
Availability
SMBJ160 is available at Aetrix Electronics and suitable for automotive ECUs, industrial power inputs, LED driver protection, and RS-485 node power rail stabilization requiring stable component supply across long production lifecycles.
Supply support for SMBJ160 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 SMBJ series was developed specifically for surface-mount surge protection in automotive and industrial environments, emphasizing ISO 7637-2 compliance, high-reliability packaging, and tight parametric control across temperature and life cycle.
FAQ
What is the polarity configuration of SMBJ160?
The SMBJ160 is a unidirectional TVS diode, with cathode indicated by a band on the DO-214AA (SMB) package. It conducts only when reverse-biased beyond its breakdown voltage, making it suitable for DC power line protection where polarity is fixed. This differs from bidirectional variants (e.g., SMBJ160C), which protect both polarities but require different layout considerations.
Does SMBJ160 meet automotive surge immunity standards?
Yes, SMBJ160 meets ISO 7637-2 Pulse 1 (inductive load dump), Pulse 2a/2b (battery disconnection), and Pulse 3a/3b (switching transients) requirements. Its 600 W peak pulse power rating, sub-1 ps response, and validated clamping performance under standardized waveforms make it qualified for use in automotive body control modules, infotainment power supplies, and ADAS sensor interfaces.
What is the maximum clamping voltage of SMBJ160 under surge conditions?
The SMBJ160 clamps to a maximum of 287 V when subjected to its rated 2.2 A peak impulse current (IPP) using the standard 10/1000 µs waveform. This value is guaranteed across temperature and process variation, and defines the upper voltage limit imposed on protected circuitry during transient events-critical for ensuring safe operation of downstream 3.3 V or 5 V ICs.
Can SMBJ160 be used in bidirectional signal line protection?
No, SMBJ160 is unidirectional and unsuitable for bidirectional signal lines like USB or RS-485 data pairs without additional circuitry. For such applications, a bidirectional variant (e.g., SMBJ160C) or back-to-back diode configuration is required. Using SMBJ160 on AC or bipolar signals risks forward conduction during normal operation and failure to suppress negative-going transients.
What is the thermal resistance profile of SMBJ160?
SMBJ160 has a junction-to-case thermal resistance (RθJC) of 10 °C/W and junction-to-ambient resistance (RθJA) of 55 °C/W at 25 °C ambient. These values assume standard PCB copper pour per JEDEC 51-3; actual board layout significantly impacts RθJA, so thermal relief pads and thermal vias are recommended for high-duty-cycle surge environments.
SMBJ160 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):
- 160V
- Voltage - Breakdown (Min):
- 178V
- Voltage - Clamping (Max) @ Ipp:
- 287V
- Current - Peak Pulse (10/1000µs):
- 2.2A
- 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)
SMBJ160 FAQ
1.How can I place an order for SMBJ160 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ160 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 SMBJ160 reliable?
The price and inventory of SMBJ160 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ160 is usually 5 days.
3.What payment methods are accepted for SMBJ160?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ160 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ160?
SMBJ160 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ160 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 SMBJ160?
For technical support, including SMBJ160 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ160 requirements.
6.How does Aetrix verify that SMBJ160 is sourced from the original manufacturer or authorized distributors?
All SMBJ160 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 SMBJ160 meets industry standards.
7.What is the process for return or replacement of SMBJ160?
All SMBJ160 units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ160, 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 SMBJ160 part is unused and in its original packaging.
Return procedure for SMBJ160:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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