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Taiwan Semiconductor Corporation SMBJ160CA
- Part No.:
- SMBJ160CA
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ160CA.pdf
- Description:
- TVS DIODE 160VWM 259VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:5,990
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Product details
Overview
SMBJ160CA from Taiwan Semiconductor is a bidirectional surface-mount transient voltage suppressor (TVS) diode designed for high-energy surge protection in DC power lines and signal interfaces. It features a 160V working stand-off voltage (VWM), 287V maximum clamping voltage (VC@IPP) at 2.2A peak pulse current, and 600W peak pulse power rating with sub-1ps response time - deployed in automotive infotainment power rails to suppress ISO 7637-2 Pulse 1/2a/2b/3a/3b transients.
For engineers reviewing the SMBJ160CA datasheet, SMBJ160CA pinout, SMBJ160CA application, or SMBJ160CA equivalent, key selection criteria include bidirectional clamping symmetry, DO-214AA (SMB) package compatibility with automated SMT assembly, leakage current ≤1µA at 160V, and compliance with automotive EFT immunity standards.
Technical Context
The SMBJ160CA implements a glass-passivated silicon junction optimized for fast transient suppression without degradation under repeated 10/1000µs surges. Its bidirectional configuration ensures symmetrical clamping in both polarities, eliminating need for polarity-aware layout - critical for protecting differential buses or AC-coupled analog inputs.
Thermal performance is defined by RθJC = 10°C/W and RθJA = 55°C/W, enabling reliable operation up to +150°C junction temperature. The device meets JESD201 Class 2 whisker resistance and J-STD-020 Moisture Sensitivity Level 1, supporting lead-free reflow without popcorn cracking.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 160 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR min/max | 178 V / 218 V @ 1 mA - Breakdown voltage range defining turn-on threshold tolerance |
| VC@IPP | 287 V @ 2.2 A - Clamped voltage during 10/1000µs surge, limiting downstream stress |
| PPK | 600 W - Peak pulse power handling per single non-repetitive 10/1000µs waveform |
| ID@VWM | ≤1 µA - Low leakage ensures minimal standby power loss in high-impedance circuits |
| Response time | <1.0 ps - Enables suppression of nanosecond-scale ESD and EFT events |
| TJ max | +150 °C - Supports under-hood automotive environments and industrial enclosures |
Pinout & Package
DO-214AA (SMB) surface-mount package: 2-terminal, bidirectional device with cathode band marking omitted (symmetrical construction). Matte tin-plated leads meet J-STD-002 solderability; case complies with UL 94V-0 flammability rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (A) | Transient return path (bidirectional) | Connects to protected line; conducts during negative surges or positive surges on cathode side |
| Cathode (K) | Transient return path (bidirectional) | Connects to protected line; conducts during positive surges or negative surges on anode side |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Identical VBR and VC characteristics in both directions - simplifies PCB routing for AC or floating nodes |
| Glass passivated junction | Enhanced reliability vs. epoxy-passivated devices under thermal cycling and humidity exposure |
| ISO 7637-2 compliance | Validated for Pulse 1 (inductive load dump), Pulse 2a/2b (switching transients), and Pulse 3a/3b (EFT) - no additional filtering needed |
| Automated placement ready | DO-214AA footprint and matte tin plating ensure consistent pick-and-place yield and solder joint integrity |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: 12V/24V battery-fed infotainment head unit exposed to load-dump transients per ISO 7637-2 Pulse 5a. IC Role / Device Role / Timing Role: Primary clamping element placed upstream of DC-DC converters and LDOs to limit input voltage excursion. Use Value: 287V clamping at 2.2A prevents overvoltage damage to 36V-rated input stages while maintaining <1µA leakage at nominal 160V system margin. | Use Scenario: 4–20mA current-loop transmitter in factory automation subject to EFT bursts per IEC 61000-4-4. IC Role / Device Role / Timing Role: Bidirectional shunt protector across loop terminals to clamp ±4kV EFT pulses without polarity concern. Use Value: Sub-1ps response ensures clamping initiates before transients propagate into precision op-amps and ADC front-ends. |
| LED Driver Overvoltage Suppression | RS-485 Transceiver Bus Protection |
Use Scenario: Constant-current LED driver in streetlight systems subjected to lightning-induced surges on long DC feeder lines. IC Role / Device Role / Timing Role: Parallel-connected TVS across output terminals to absorb induced energy before reaching LED strings or PWM controller. Use Value: 600W PPK rating handles multi-kA surge currents while 150°C TJ max supports outdoor thermal environments. | Use Scenario: RS-485 transceiver in building management system exposed to ground potential differences and cable coupling. IC Role / Device Role / Timing Role: Bidirectional protection on A/B differential pair to prevent latch-up or permanent damage from common-mode surges. Use Value: Symmetrical clamping ensures equal protection on both lines without skew, preserving signal integrity during transient 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 |
|---|---|---|---|
| Littelfuse SMAJ160CA | Same DO-214AA package, identical VWM (160V), but higher VC@IPP = 298V (vs. 287V); 5% tighter VBR tolerance (178–207V) | Marginally higher clamping voltage may require verification against downstream IC absolute max ratings | Select when tighter VBR distribution or established Littelfuse supply chain is prioritized |
| ON Semiconductor 1.5SMC160CA | Same VWM and VC@IPP (287V), but larger DO-214AB (SMC) package (7.1 × 6.2 mm vs. 4.5 × 3.9 mm); 1.5kW PPK rating | Requires PCB layout change; suited for higher-energy surge environments where space allows | Select when higher single-pulse energy handling is required and board area permits larger footprint |
Compared with SMAJ160CA and 1.5SMC160CA, the SMBJ160CA offers the lowest clamping voltage in its class and smallest DO-214AA footprint - optimizing PCB density and voltage margin for space-constrained automotive and industrial modules.
Availability
SMBJ160CA is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor interfaces, LED lighting drivers, and RS-485 communication systems requiring stable component supply across extended production lifecycles.
Supply support for SMBJ160CA 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 components.
The SMBJ series was engineered specifically for high-reliability, surface-mount surge protection in automotive and industrial environments - emphasizing low clamping voltage, ISO 7637-2 compliance, and robust thermal performance in compact DO-214AA packaging.
FAQ
What is the maximum clamping voltage of SMBJ160CA under standard 10/1000µs surge conditions?
The SMBJ160CA has a maximum clamping voltage (VC@IPP) of 287 V when subjected to a 10/1000µs waveform at 2.2 A peak pulse current. This value is measured per ANSI/IEEE C62.35 and confirmed in Taiwan Semiconductor's official SMBJ series datasheet Revision R2104 - ensuring predictable overvoltage limiting for downstream ICs rated to 300V or higher.
Is SMBJ160CA unidirectional or bidirectional, and how is polarity indicated?
SMBJ160CA is a bidirectional TVS diode, meaning it provides symmetrical clamping in both forward and reverse directions. Unlike unidirectional variants (e.g., SMBJ160A), it has no cathode band marking - the DO-214AA package is electrically symmetric, and either terminal may serve as anode or cathode depending on transient polarity.
Does SMBJ160CA meet automotive surge immunity standards such as ISO 7637-2?
Yes, SMBJ160CA is explicitly rated to meet ISO 7637-2 Pulse 1 (inductive load dump), Pulse 2a/2b (switching transients), and Pulse 3a/3b (electrical fast transients). This compliance is documented in the "FEATURES" section of Taiwan Semiconductor's SMBJ series datasheet R2104 and validated through standardized test waveforms.
What is the leakage current specification for SMBJ160CA at its working stand-off voltage?
At its 160 V working stand-off voltage (VWM), SMBJ160CA exhibits a maximum blocking leakage current (ID@VWM) of 1 µA at TA = 25°C. This low leakage preserves efficiency in high-impedance monitoring circuits and ensures minimal power loss in always-on automotive subsystems.
Can SMBJ160CA be used in place of SMBJ160A in a design?
No - SMBJ160CA and SMBJ160A are functionally distinct: SMBJ160CA is bidirectional with symmetrical clamping, while SMBJ160A is unidirectional with a cathode band and forward voltage drop (~5.0 V). Substituting one for the other requires verifying circuit polarity, clamping symmetry requirements, and downstream IC tolerance to reverse conduction.
SMBJ160CA 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):
- 160V
- Voltage - Breakdown (Min):
- 178V
- Voltage - Clamping (Max) @ Ipp:
- 259V
- Current - Peak Pulse (10/1000µs):
- 2.3A
- 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)
SMBJ160CA FAQ
1.How can I place an order for SMBJ160CA through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ160CA 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 SMBJ160CA reliable?
The price and inventory of SMBJ160CA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ160CA is usually 5 days.
3.What payment methods are accepted for SMBJ160CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ160CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ160CA?
SMBJ160CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ160CA 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 SMBJ160CA?
For technical support, including SMBJ160CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ160CA requirements.
6.How does Aetrix verify that SMBJ160CA is sourced from the original manufacturer or authorized distributors?
All SMBJ160CA 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 SMBJ160CA meets industry standards.
7.What is the process for return or replacement of SMBJ160CA?
All SMBJ160CA units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ160CA, 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 SMBJ160CA part is unused and in its original packaging.
Return procedure for SMBJ160CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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