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Taiwan Semiconductor Corporation SMBJ160A
- Part No.:
- SMBJ160A
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ160A.pdf
- Description:
- TVS DIODE 160VWM 259VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:6,000
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Product details
Overview
SMBJ160A 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), 178–197 V breakdown voltage (VBR), 259 V maximum clamping voltage (VC) at 2.4 A peak impulse current, and 600 W peak pulse power rating with <1.0 ps response time - deployed in automotive power supply rails and industrial I/O protection.
For engineers reviewing the SMBJ160A datasheet, SMBJ160A pinout, SMBJ160A application, or SMBJ160A equivalent, key selection criteria include clamping voltage margin relative to protected IC VDD, leakage current at operating voltage, thermal derating above 25°C ambient, and compliance with ISO 7637-2 Pulse 1/2a/2b/3a/3b for automotive transients.
Technical Context
The SMBJ160A implements a single-die, glass-passivated PN junction optimized for fast transient suppression under 10/1000 µs waveform stress. Its unidirectional configuration provides low forward voltage (VF = 5.0 V @ 50 A) only in forward conduction, while reverse-biased operation delivers precise clamping at VC = 259 V when subjected to IPP = 2.4 A.
Thermal performance is defined by RθJA = 55 °C/W and RθJC = 10 °C/W, enabling reliable operation up to TJ = +150 °C. It meets J-STD-020 moisture sensitivity level 1 and JESD 201 Class 2 whisker resistance, supporting lead-free reflow assembly without delamination or solder joint degradation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 160 V - Maximum continuous reverse operating voltage before clamping initiates |
| VBR min/max | 178 V / 197 V @ IT = 1 mA - Confirmed breakdown threshold range for design margining |
| VC @ IPP | 259 V @ IPP = 2.4 A - Clamped voltage during 10/1000 µs surge, defining protected circuit overvoltage ceiling |
| PPK | 600 W - Peak non-repetitive pulse power handling per ISO 7637-2 Pulse 3b |
| ID @ VWM | <1 µA - Reverse leakage at rated stand-off, minimizing standby power loss in high-impedance circuits |
| TJ max | +150 °C - Maximum junction temperature, supporting under-hood automotive placement |
| Package | DO-214AA (SMB) - Standardized surface-mount outline with 0.090 g mass and UL 94V-0 molding compound |
Pinout & Package
DO-214AA (SMB) package: cathode-banded end denotes terminal 1 (cathode); anode is terminal 2. Matte tin-plated leads comply with J-STD-002 solderability and JESD 201 Class 2 whisker resistance. Polarity marking is laser-etched on molded body per standard orientation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink node | Connected to protected line; conducts surge current to ground during overvoltage events |
| Anode | Reference/ground return path | Typically tied to system ground plane; completes clamping loop with minimal inductance |
Key Features
| Feature | Design Value |
|---|---|
| Clamping voltage stability | VC = 259 V at IPP = 2.4 A ensures predictable overvoltage ceiling across production lot |
| Ultra-fast response | <1.0 ps junction response enables suppression before ESD or lightning-induced transients propagate into IC inputs |
| Automated placement compatibility | DO-214AA footprint and matte tin plating support high-yield pick-and-place and reflow without tombstoning |
| Automotive transient compliance | Fully meets ISO 7637-2 Pulse 1 (inductive load dump), Pulse 2a/2b (battery disconnect), and Pulse 3a/3b (capacitive coupling) |
| Environmental compliance | RoHS-compliant and halogen-free per IEC 61249-2-21, suitable for automotive Tier-1 supply chain requirements |
Applications
| Automotive Power Rail Protection | Industrial PLC Digital Input Protection |
|---|---|
Use Scenario: 12 V/24 V battery-fed ECUs exposed to load dump and jump-start surges per ISO 7637-2. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and ground to clamp transients before they reach PMIC or MCU input pins. Use Value: Limits rail voltage to ≤259 V during 2.4 A surge, preventing latch-up or oxide breakdown in downstream 3.3 V/5 V logic. | Use Scenario: 24 V digital input channels in programmable logic controllers subject to field-wiring ESD and inductive kickback. IC Role / Device Role / Timing Role: Standoff protection device mounted at connector entry point, shunting transients before optocoupler or Schmitt trigger input stage. Use Value: Sub-µA leakage at 24 V ensures stable logic thresholds; 600 W rating absorbs repetitive 10/1000 µs pulses without degradation. |
| LED Driver Output Protection | Telecom Line Interface Surge Suppression |
Use Scenario: Constant-current LED drivers driving high-brightness arrays in outdoor signage, exposed to lightning-induced surges. IC Role / Device Role / Timing Role: TVS connected across driver output terminals to protect MOSFET switch and current-sense amplifier from reverse-polarity and inductive spikes. Use Value: 160 V VWM matches typical 48 V LED string bus; 259 V VC prevents overvoltage failure of 60 V-rated output FETs. | Use Scenario: RS-485 or CAN bus transceivers interfacing with long external cables in factory automation networks. IC Role / Device Role / Timing Role: Primary-level protection placed before common-mode choke and transceiver, absorbing differential-mode surges coupled onto data lines. Use Value: Fast <1.0 ps response captures sub-nanosecond EFT bursts; DO-214AA footprint allows compact layout adjacent to connector. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ160CA | Bidirectional variant with same VWM (160 V), symmetric clamping in both polarities (VC = 259 V ±5%), higher ID (≤2 µA) | Required where AC-coupled signals or reversible polarity connections exist (e.g., RS-485, audio lines) | Select SMBJ160CA only if bidirectional clamping is mandated; SMBJ160A offers lower leakage for DC-only rails |
| SAC160 | Same DO-214AA package but lower PPK (400 W), higher VC (275 V @ IPP = 1.8 A), and wider VBR tolerance (170–210 V) | Suitable for cost-sensitive consumer electronics where full 600 W immunity is not required | Choose SMBJ160A for automotive or industrial designs requiring certified ISO 7637-2 compliance and tighter VBR control |
Compared with SMBJ160CA and SAC160, the SMBJ160A delivers superior unidirectional clamping precision, lower leakage, and full 600 W ISO 7637-2 Pulse 3b capability - making it the preferred choice for safety-critical DC power rail protection where polarity is fixed and surge energy is high.
Availability
SMBJ160A is available at Aetrix Electronics and suitable for automotive ECU design, industrial PLC input modules, LED driver output stages, and telecom line interface protection requiring stable component supply and full ISO 7637-2 compliance.
Supply support for SMBJ160A 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 automotive, industrial, and computing markets since 1979.
The SMBJ series is part of TSC's transient protection portfolio, engineered specifically for high-reliability DC power line and signal interface surge suppression in harsh electromagnetic environments.
FAQ
What is the maximum clamping voltage of SMBJ160A under standard test conditions?
The SMBJ160A has a maximum clamping voltage (VC) of 259 V when subjected to a 10/1000 µs surge waveform at a peak impulse current (IPP) of 2.4 A. This value is measured per ANSI/IEEE C62.35 and defines the upper voltage limit imposed on protected circuitry during transient events. The SMBJ160A maintains this clamping performance across its qualified operating temperature range and production lot variations.
Does SMBJ160A meet automotive transient immunity standards?
Yes, the SMBJ160A meets ISO 7637-2 Pulse 1 (load dump), Pulse 2a/2b (battery disconnection), and Pulse 3a/3b (capacitive coupling) requirements. Its 600 W peak pulse power rating, fast <1.0 ps response, and specified clamping behavior under standardized waveforms make it suitable for front-end protection in automotive ECUs, body control modules, and infotainment power supplies. The SMBJ160A is rated for TJ = −55 °C to +150 °C, supporting under-hood deployment.
What is the leakage current specification for SMBJ160A at its working voltage?
The SMBJ160A exhibits a maximum blocking leakage current (ID) of less than 1 µA when biased at its 160 V working stand-off voltage (VWM) and tested at TA = 25 °C. This ultra-low leakage ensures minimal power loss in high-impedance monitoring circuits and preserves voltage regulation integrity in sensitive analog or low-power microcontroller supply rails. The SMBJ160A maintains this performance across its full storage temperature range (−55 °C to +150 °C).
How does SMBJ160A differ from SMBJ160 in terms of electrical performance?
The SMBJ160A offers tighter breakdown voltage tolerance (178–197 V) compared to SMBJ160 (178–218 V), resulting in more consistent clamping onset and reduced design margin uncertainty. Its maximum clamping voltage is 259 V versus 287 V for SMBJ160, delivering lower overvoltage stress to protected components. The SMBJ160A also specifies lower leakage current and improved thermal derating consistency - critical for automotive and industrial applications where reliability is paramount.
Is SMBJ160A compatible with lead-free reflow soldering processes?
Yes, the SMBJ160A uses matte tin-plated leads compliant with J-STD-002 solderability requirements and supports standard lead-free reflow profiles up to 260 °C peak temperature. Its DO-214AA (SMB) package is rated for moisture sensitivity level 1 per J-STD-020, eliminating bake requirements prior to assembly. The UL 94V-0 flammability-rated molding compound and JESD 201 Class 2 whisker resistance further ensure robustness in automated manufacturing. The SMBJ160A is fully qualified for high-volume SMT production without special handling.
SMBJ160A 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:
- 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)
SMBJ160A FAQ
1.How can I place an order for SMBJ160A through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ160A 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 SMBJ160A reliable?
The price and inventory of SMBJ160A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ160A is usually 5 days.
3.What payment methods are accepted for SMBJ160A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ160A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ160A?
SMBJ160A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ160A 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 SMBJ160A?
For technical support, including SMBJ160A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ160A requirements.
6.How does Aetrix verify that SMBJ160A is sourced from the original manufacturer or authorized distributors?
All SMBJ160A 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 SMBJ160A meets industry standards.
7.What is the process for return or replacement of SMBJ160A?
All SMBJ160A units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ160A, 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 SMBJ160A part is unused and in its original packaging.
Return procedure for SMBJ160A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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