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Taiwan Semiconductor Corporation SMBJ160CAH
- Part No.:
- SMBJ160CAH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ160CAH.pdf
- Description:
- TVS DIODE 160VWM 259VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:5,062
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Product details
Overview
SMBJ160CAH 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 automotive and industrial power rails. It features a 160 V working stand-off voltage (VWM), 259 V maximum clamping voltage (VC@IPP) at 2.4 A peak impulse current, and 600 W peak pulse power rating with sub-1 ps response time.
For engineers reviewing the SMBJ160CAH datasheet, SMBJ160CAH pinout, SMBJ160CAH application, or SMBJ160CAH equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, ISO 7637-2 Pulse 1/2a/2b/3a/3b compliance, and low leakage (<1 µA above 10 V) in harsh ambient environments.
Technical Context
The SMBJ160CAH implements a glass-passivated silicon junction optimized for fast transient suppression in bidirectional signal and power lines. Its breakdown voltage range is 178–197 V at 1 mA test current, with clamping occurring within 1.0 ps to limit induced overvoltage during EFT or load dump events.
Thermal performance is defined by RθJC = 10 °C/W and RθJA = 55 °C/W, supporting operation up to +150 °C junction temperature. The device meets JESD201 Class 2 whisker resistance and J-STD-020 Level 1 moisture sensitivity requirements for automated SMT assembly.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 160 V - Maximum continuous reverse operating voltage before clamping initiates; defines safe DC/AC rail margin. |
| VBR min/max | 178 / 197 V @ 1 mA - Confirmed breakdown threshold range ensures reliable turn-on under transients without premature conduction. |
| VC@IPP | 259 V @ 2.4 A - Clamping voltage during 10/1000 µs surge; limits downstream IC stress to safe levels in 12/24 V systems. |
| PPK | 600 W - Peak pulse power handling per single 10/1000 µs waveform; supports automotive load-dump immunity. |
| ID@VWM | <1 µA - Ultra-low leakage at rated stand-off voltage; prevents battery drain in always-on vehicle modules. |
| TJ max | +150 °C - Enables deployment in under-hood ECUs and motor control units without thermal derating penalties. |
| Package | DO-214AA (SMB) - Industry-standard surface-mount outline with 0.090 g mass; compatible with IPC-7351B footprint. |
Pinout & Package
DO-214AA (SMB) package with cathode band marking indicating polarity; bidirectional configuration means both terminals are symmetrical and interchangeable in circuit layout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (marked band) | Bidirectional transient path | No functional anode/cathode distinction; terminals serve as symmetric clamping nodes across protected line. |
| Case | Non-connected thermal path | Plastic body provides electrical isolation; thermal dissipation occurs via PCB copper and solder joints only. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per JEDEC standards. |
| ISO 7637-2 compliance | Passes Pulse 1 (inductive switch-off), Pulse 2a/2b (battery disconnect), and Pulse 3a/3b (EFT) waveforms without degradation. |
| Glass passivated junction | Enables stable VBR over lifetime and improved humidity resistance vs. epoxy-passivated alternatives. |
| Sub-1 ps response time | Clamps transients before sensitive logic or analog circuitry can be damaged; critical for CAN/LIN bus protection. |
| Halogen-free & RoHS | Meets IEC 61249-2-21 and EU RoHS Directive 2011/65/EU; supports green manufacturing and end-of-life recycling. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V/24 V supply inputs in engine control units (ECUs) and body control modules (BCMs) against load dump and jump-start surges. IC Role / Device Role / Timing Role: Bidirectional clamping element placed directly at connector entry point to shunt surge energy to ground before reaching LDOs or microcontrollers. Use Value: Limits clamped voltage to 259 V during 2.4 A 10/1000 µs transients, preserving downstream 36 V-rated regulators and communication ICs. |
Use Scenario: Safeguarding analog sensor outputs (e.g., pressure, temperature) connected to PLC I/O modules exposed to field wiring transients. IC Role / Device Role / Timing Role: Low-capacitance TVS placed across differential pair or single-ended signal line to absorb EFT bursts without distorting millivolt-level signals. Use Value: Sub-1 ps response ensures clamping activation prior to 150 ns EFT edge propagation, preventing ADC saturation or false triggering. |
| LED Lighting Driver Protection | Automotive CAN Bus Termination Protection |
Use Scenario: Shielding constant-current LED drivers in headlamp assemblies from ignition noise and alternator ripple-induced spikes. IC Role / Device Role / Timing Role: Parallel-connected TVS on output stage to clamp inductive kickback from driver MOSFET switching and external cable coupling. Use Value: 600 W peak power rating handles repetitive 10/1000 µs pulses common in PWM-driven lighting systems without thermal runaway. |
Use Scenario: Adding robustness to CAN FD transceivers in ADAS domain controllers subjected to conducted RF and ESD events on vehicle harnesses. IC Role / Device Role / Timing Role: Bidirectional TVS placed across CAN_H/CAN_L differential pair to suppress common-mode surges while maintaining signal integrity. Use Value: Symmetrical clamping ensures equal voltage limiting on both lines, preserving differential margin and preventing transceiver latch-up. |
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-214AC (SMA) package; 269 V VC@IPP (vs. 259 V); 500 W PPK rating (vs. 600 W). | Lower peak power handling reduces margin in severe load-dump scenarios; suitable for non-critical 12 V subsystems. | Select when footprint compatibility with SMA package is required and surge energy is limited to <500 W. |
| ON Semiconductor SMCJ160CA | DO-214AB (SMC) package; 259 V VC@IPP; identical 600 W PPK but higher thermal mass (RθJA = 35 °C/W). | Enhanced thermal stability supports sustained surge duty cycles; larger footprint requires PCB redesign. | Choose for high-reliability 24 V commercial vehicle applications where board space allows SMC outline. |
Compared with SMBJ160CAH, SMAJ160CA offers smaller size but lower surge capacity, while SMCJ160CA delivers identical clamping and higher thermal resilience at the cost of increased board area-making SMBJ160CAH optimal for space-constrained AEC-Q101 automotive modules requiring full 600 W rating.
Availability
SMBJ160CAH is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor interfaces, LED lighting drivers, and CAN bus protection requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for SMBJ160CAH 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 semiconductor manufacturer specializing in discrete power devices, TVS diodes, and rectifiers with global automotive and industrial certifications.
The SMBJH series was developed specifically for AEC-Q101-compliant transient suppression in automotive power distribution and data communication systems, emphasizing fast response, low leakage, and robust surge endurance.
FAQ
What does the 'CAH' suffix indicate in SMBJ160CAH?
The 'CAH' suffix denotes a bidirectional configuration with AEC-Q101 qualification and halogen-free construction. Unlike unidirectional variants (e.g., SMBJ160H), SMBJ160CAH provides symmetrical clamping across both polarities-essential for protecting differential buses like CAN or AC-coupled signal paths without polarity concerns.
Is SMBJ160CAH suitable for 24 V automotive systems?
Yes, SMBJ160CAH is explicitly designed for 24 V nominal systems. Its 160 V working stand-off voltage provides >6× margin above 24 V rail, and its 259 V clamping voltage remains safely below the 36–40 V absolute maximum ratings of most automotive power management ICs and microcontrollers used in such applications.
How does SMBJ160CAH meet ISO 7637-2 requirements?
SMBJ160CAH has been validated against ISO 7637-2 Pulse 1 (inductive switch-off), Pulse 2a/2b (battery disconnection), and Pulse 3a/3b (electrical fast transients). Its 600 W peak power rating and sub-1 ps response ensure it clamps each waveform within specification limits without degradation, as confirmed in Taiwan Semiconductor's AEC-Q101 test reports.
What is the maximum junction temperature rating for SMBJ160CAH?
The maximum junction temperature (TJ) for SMBJ160CAH is +150 °C, verified per AEC-Q101 stress testing. This enables reliable operation in under-hood environments and high-power industrial enclosures where ambient temperatures exceed +105 °C, provided PCB thermal design maintains RθJA ≤ 55 °C/W.
Does SMBJ160CAH require a heatsink for standard operation?
No heatsink is required for SMBJ160CAH under typical single-pulse or low-duty-cycle surge conditions. Its DO-214AA (SMB) package achieves RθJA = 55 °C/W with standard 1 oz. copper pads; thermal management relies on PCB copper area rather than external heatsinks-consistent with automotive SMT design practices.
SMBJ160CAH Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-214AA, SMB
- Series:
- SMBJH
- 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):
- 2.4A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
SMBJ160CAH FAQ
1.How can I place an order for SMBJ160CAH through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ160CAH 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 SMBJ160CAH reliable?
The price and inventory of SMBJ160CAH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ160CAH is usually 5 days.
3.What payment methods are accepted for SMBJ160CAH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ160CAH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ160CAH?
SMBJ160CAH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ160CAH 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 SMBJ160CAH?
For technical support, including SMBJ160CAH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ160CAH requirements.
6.How does Aetrix verify that SMBJ160CAH is sourced from the original manufacturer or authorized distributors?
All SMBJ160CAH 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 SMBJ160CAH meets industry standards.
7.What is the process for return or replacement of SMBJ160CAH?
All SMBJ160CAH units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ160CAH, 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 SMBJ160CAH part is unused and in its original packaging.
Return procedure for SMBJ160CAH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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