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Taiwan Semiconductor Corporation SMBJ160AH
- Part No.:
- SMBJ160AH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ160AH.pdf
- Description:
- TVS DIODE 160VWM 259VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,714
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Product details
Overview
SMBJ160AH from Taiwan Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in DO-214AA (SMB) package, rated for 600W peak pulse power, 160V working stand-off voltage (VWM), and clamps transients to ≤259V at 2.4A peak impulse current. It protects automotive and industrial power rails against ISO 7637-2 Pulse 1/2a/2b/3a/3b transients.
For engineers reviewing the SMBJ160AH datasheet, SMBJ160AH pinout, SMBJ160AH application, or SMBJ160AH equivalent, key selection criteria include unidirectional polarity, 178–197V breakdown voltage range, <1μA leakage at 160V, 10°C/W junction-to-case thermal resistance, and AEC-Q101 qualification for automotive-grade reliability.
Technical Context
The SMBJ160AH operates as a unidirectional avalanche diode with glass-passivated junction, enabling fast response (<1.0ps) to ESD and electrical fast transients. Its clamping behavior is defined by a 10/1000µs waveform, with maximum clamping voltage of 259V at 2.4A IPP and steady-state power dissipation of 3W at 25°C ambient.
Thermal performance is characterized 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 J-STD-020 Moisture Sensitivity Level 1.
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 - Breakdown occurs within this range at 1 mA test current, defining turn-on threshold |
| VC @ IPP | 259 V - Clamped voltage during 2.4 A 10/1000µs surge, limiting downstream stress |
| PPK | 600 W - Peak non-repetitive pulse power handling capability per IEC 61000-4-5 |
| ID @ VWM | <1 µA - Low leakage ensures minimal standby power loss in high-impedance circuits |
| TJ max | +150 °C - Enables use in under-hood automotive environments and industrial power supplies |
| RθJC | 10 °C/W - Supports efficient heat transfer to PCB copper when mounted with adequate thermal pad |
Pinout & Package
DO-214AA (SMB) surface-mount package with matte tin-plated leads; cathode indicated by band marking; polarity-critical for unidirectional operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Input reference node for transient suppression | Connected to protected line (e.g., 12V/24V rail); must be routed with low-inductance path to ground |
| Cathode | Clamping output terminal | Connected to system ground plane; forms low-impedance path for surge current during overvoltage events |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive electronics per stress test requirements including HTOL, TC, UHAST, and mechanical shock |
| Glass passivated junction | Enhances long-term reliability and stability of breakdown voltage under thermal cycling and humidity exposure |
| Fast response time <1.0 ps | Responds before most IC input structures can be damaged by ESD or EFT pulses |
| ISO 7637-2 compliance | Withstands standardized automotive load-dump and inductive-switching transients without degradation |
| Halogen-free & RoHS compliant | Meets IEC 61249-2-21 and EU RoHS Directive 2011/65/EU for environmentally restricted substances |
Applications
| Automotive Power Rail Protection | Industrial DC Power Input Stage |
|---|---|
Use Scenario: Protecting 12V/24V battery-fed ECUs from load dump and alternator transients per ISO 7637-2 Pulse 5a/5b. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and chassis ground to clamp surges above 160V. Use Value: Limits voltage seen by downstream PMICs and microcontrollers to ≤259V, preventing latch-up or gate oxide damage. | Use Scenario: Safeguarding programmable logic controllers (PLCs) and motor drives from inductive switching spikes on 24V/48V control inputs. IC Role / Device Role / Timing Role: Standoff protection device absorbing repetitive 600W transients induced by relay or solenoid de-energization. Use Value: Maintains system uptime by eliminating false resets caused by >100V transients exceeding controller input ratings. |
| LED Driver Overvoltage Clamp | ESD-Sensitive Sensor Interface |
Use Scenario: Preventing catastrophic failure of constant-current LED drivers subjected to hot-swap or cable discharge events. IC Role / Device Role / Timing Role: Parallel-connected unidirectional TVS across driver output to shunt surge energy before reaching LED string. Use Value: Ensures driver IC survives 10/1000µs surges up to 2.4A while maintaining VWM margin above nominal 160V bus. | Use Scenario: Shielding automotive camera modules and radar sensors from human-body-model (HBM) ESD events on signal lines. IC Role / Device Role / Timing Role: Low-leakage (≤1µA) TVS placed at connector interface to divert ESD before reaching analog front-end amplifiers. Use Value: Preserves signal integrity with <1µA leakage at 160V, avoiding DC offset errors in precision sensor bias networks. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ160A | Same VWM (160V), but wider VBR range (178–218V) and higher VC (287V @ 2.2A) | Higher clamping voltage reduces protection margin for sensitive 3.3V/5V logic interfaces | Select SMBJ160A only if lower cost is prioritized over tighter clamping performance |
| SAC160 | Same VWM (160V), but bidirectional configuration and lower PPK (400W) | Not suitable for unidirectional DC rail protection where polarity matters | Choose SAC160 only for AC-coupled or symmetrical signal-line protection |
Compared with SMBJ160A and SAC160, the SMBJ160AH offers tighter VBR tolerance (178–197V vs. 178–218V), lower clamping voltage (259V vs. 287V), and higher surge rating (2.4A vs. 2.2A), making it optimal for automotive DC power rails requiring precise overvoltage control.
Availability
SMBJ160AH is available at Aetrix Electronics and suitable for automotive ECU design, industrial PLC power input stages, LED driver overvoltage clamping, and ESD-sensitive sensor interface protection requiring stable component supply and AEC-Q101 compliance.
Supply support for SMBJ160AH 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, rectifiers, and MOSFETs for automotive, industrial, and consumer markets.
The SMBJH series was designed specifically for AEC-Q101-compliant transient suppression in harsh automotive environments, emphasizing robust clamping, low leakage, and thermal reliability in compact SMB packages.
FAQ
What is the breakdown voltage range for SMBJ160AH?
The SMBJ160AH has a minimum breakdown voltage (VBR) of 178 V and a maximum of 197 V at 1 mA test current, as specified in the Taiwan Semiconductor datasheet Version A2102. This tight 19 V spread ensures predictable clamping onset and supports reliable design margining for 160 V systems. The SMBJ160AH's VBR window is narrower than the standard SMBJ160H (178–218 V), improving consistency in surge response.
Is SMBJ160AH unidirectional or bidirectional?
SMBJ160AH is a unidirectional TVS diode, indicated by its "AH" suffix and cathode band marking. It conducts only during reverse overvoltage events and blocks forward current like a standard diode. Unlike bidirectional variants (e.g., SMBJ160CAH), the SMBJ160AH is intended for DC rail protection where polarity is fixed and forward conduction must be prevented.
What is the maximum clamping voltage of SMBJ160AH at rated surge current?
The SMBJ160AH clamps to a maximum of 259 V when subjected to its rated peak impulse current of 2.4 A with a 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and defines the upper voltage limit imposed on protected circuitry during transient events. The SMBJ160AH's clamping performance is 28 V lower than the SMBJ160H (287 V), enhancing protection margin for downstream components.
Does SMBJ160AH meet automotive qualification standards?
Yes, SMBJ160AH is AEC-Q101 qualified and meets ISO 7637-2 Pulse 1, 2a, 2b, 3a, and 3b test requirements for automotive transient immunity. It also complies with JESD201 Class 2 whisker resistance and J-STD-020 Moisture Sensitivity Level 1, confirming suitability for reflow soldering and under-hood deployment. These qualifications are explicitly stated for the SMBJ160AH in the Taiwan Semiconductor datasheet.
What package type does SMBJ160AH use and what are its thermal characteristics?
SMBJ160AH uses the DO-214AA (SMB) surface-mount package with matte tin-plated leads. Its thermal characteristics include a junction-to-case thermal resistance (RθJC) of 10°C/W and junction-to-ambient (RθJA) of 55°C/W. These values enable effective heat dissipation when mounted on PCBs with thermal relief pads, supporting continuous operation up to +150°C junction temperature - critical for automotive and industrial applications.
SMBJ160AH 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:
- 1
- Bidirectional Channels:
- -
- 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)
SMBJ160AH FAQ
1.How can I place an order for SMBJ160AH through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ160AH 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 SMBJ160AH reliable?
The price and inventory of SMBJ160AH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ160AH is usually 5 days.
3.What payment methods are accepted for SMBJ160AH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ160AH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ160AH?
SMBJ160AH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ160AH 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 SMBJ160AH?
For technical support, including SMBJ160AH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ160AH requirements.
6.How does Aetrix verify that SMBJ160AH is sourced from the original manufacturer or authorized distributors?
All SMBJ160AH 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 SMBJ160AH meets industry standards.
7.What is the process for return or replacement of SMBJ160AH?
All SMBJ160AH units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ160AH, 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 SMBJ160AH part is unused and in its original packaging.
Return procedure for SMBJ160AH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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