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Vishay General Semiconductor - Diodes Division SMBJ160AHM3/I
- Part No.:
- SMBJ160AHM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ160AHM3/I.pdf
- Description:
- TVS DIODE 160VWM 259VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:8,869
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Product details
Overview
SMBJ160AHM3/I from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in the SMB (DO-214AA) package, designed to protect sensitive electronics against inductive switching transients and lightning-induced surges. It features a 160 V stand-off voltage (VWM), 178–197 V breakdown voltage (VBR) at 1 mA, 259 V maximum clamping voltage (VC) at 2.3 A peak pulse current, and 600 W peak pulse power rating with 10/1000 µs waveform.
For engineers reviewing the SMBJ160AHM3/I datasheet, SMBJ160AHM3/I pinout, SMBJ160AHM3/I application, or SMBJ160AHM3/I equivalent, this device is selected for robust overvoltage protection on DC power rails, MOSFET gate drivers, and sensor signal lines in industrial motor controls, telecom power supplies, and automotive body electronics where AEC-Q101 qualification and halogen-free compliance are required.
Technical Context
This TVS diode operates as a unidirectional clamping device with cathode-banded polarity, leveraging a glass-passivated silicon junction for stable avalanche behavior under repetitive surge conditions. Its thermal resistance (RθJA = 100 °C/W) and low incremental surge resistance enable reliable energy absorption without thermal runaway when mounted on standard 5.0 mm × 5.0 mm copper pads.
The SMBJ160AHM3/I delivers fast response time (<1 ps) and excellent clamping ratio (VC/VBR ≈ 1.45), meeting UL 497B recognition and J-STD-020 MSL Level 1 moisture sensitivity requirements. Its halogen-free, RoHS-compliant construction (HM3 suffix) supports high-reliability commercial and automotive-grade deployments per AEC-Q101 qualification.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 160 V - Maximum continuous reverse operating voltage before significant leakage; defines safe DC rail margin for 12–48 V systems with transient headroom. |
| VBR (Breakdown Voltage) | 178–197 V at IT = 1 mA - Tight tolerance ensures predictable turn-on during overvoltage events; validated per ANSI/IEEE C62.35. |
| VC (Clamping Voltage) | 259 V at IPPM = 2.3 A - Limits downstream voltage stress during 10/1000 µs surge; enables protection of 200 V-rated MOSFETs and ICs. |
| PPPM (Peak Pulse Power) | 600 W - Sustains standardized lightning/surge immunity per IEC 61000-4-5; derates linearly above TA = 25 °C per Fig. 2. |
| IPPM (Peak Pulse Current) | 2.3 A - Peak current capability at rated clamping voltage; verified with non-repetitive 10/1000 µs waveform per Fig. 1. |
| TJmax | 150 °C - Maximum junction temperature; supports operation in under-hood automotive and industrial enclosures without forced cooling. |
| Package | SMB (DO-214AA) - Low-profile surface-mount outline (5.21 mm × 4.06 mm × 2.20 mm); compatible with automated pick-and-place and reflow soldering. |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case with matte tin-plated leads, UL 94 V-0 rated compound, cathode indicated by band marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to system ground or low-side return path; conducts during forward surge (e.g., reverse battery protection). |
| Cathode | Reverse-biased clamping terminal | Connected to protected line (e.g., +12 V rail); avalanches into conduction when VAK exceeds VBR, shunting surge current to ground. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Enables single-device protection against IEC 61000-4-5 Level 3 surges (1 kV/2 Ω) on 24 V DC inputs without external series impedance. |
| AEC-Q101 qualified (HM3 suffix) | Validated for automotive body electronics applications including door modules, lighting controllers, and HVAC actuators per stress test requirements. |
| Halogen-free & RoHS-compliant | Meets IPC-1752A material declaration standards and EU Directive 2011/65/EU; supports green manufacturing and end-of-life recycling. |
| MSL Level 1 (260 °C peak) | Permits standard lead-free reflow profiles without pre-baking; eliminates moisture-related popcorning during assembly. |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients (<1 ns rise time), improving protection margin for high-speed logic and ADC front-ends. |
Applications
| Industrial Motor Drives | Telecom Power Supplies |
|---|---|
|
Use Scenario: Protection of IGBT gate driver supply rails against cross-talk and inductive kickback from adjacent power stages. IC Role / Device Role / Timing Role: Unidirectional clamping TVS placed between gate driver VDD and ground, activated only during positive overvoltage events. Use Value: Clamps transients to ≤259 V, preventing gate oxide rupture in 600 V IGBTs while maintaining <1 µA leakage at 160 V nominal rail. |
Use Scenario: Input-stage surge suppression on -48 V DC telecom rectifier outputs exposed to lightning-induced common-mode surges. IC Role / Device Role / Timing Role: Standoff-rated TVS connected anode-to-ground, cathode-to-line, absorbing differential-mode surges up to 600 W. Use Value: Maintains system uptime by limiting voltage excursions below 259 V during 10/1000 µs surges, preserving downstream DC/DC converter integrity. |
| Automotive Body Control Modules | Industrial Sensor Signal Conditioning |
|
Use Scenario: Reverse-battery and load-dump protection on LIN bus power pins in door control units. IC Role / Device Role / Timing Role: Unidirectional TVS with cathode tied to +12 V supply, conducting during negative transients via forward bias. Use Value: Withstands 100 A 8.3 ms half-sine surge (IFSM) and clamps 12 V rail to safe levels during ISO 7637-2 Pulse 5a events. |
Use Scenario: Overvoltage safeguard on analog output lines (e.g., 4–20 mA transmitter outputs) in factory automation PLC I/O modules. IC Role / Device Role / Timing Role: Low-leakage (≤1 µA at 160 V) TVS placed across output terminals to clamp ESD and switching noise. Use Value: Preserves 16-bit DAC accuracy by limiting transient-induced offset shift; glass passivation ensures long-term leakage stability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ160AHE3/I | Same electrical specs, but RoHS-compliant (E3) without halogen-free certification; MSL Level 1, same SMB package. | Lacks halogen-free compliance; suitable for commercial, non-automotive applications where IPC-1752A reporting is not required. | Select SMBJ160AHE3/I for cost-sensitive industrial designs where halogen-free status is not mandated by OEM or regulatory policy. |
| SMAJ160A-M3 | Lower peak pulse power (400 W vs. 600 W); SMA (DO-214AC) package with smaller footprint (4.5 mm × 2.7 mm) and higher RθJA (140 °C/W). | Reduced surge handling capacity; limited to lower-energy transients (e.g., IEC 61000-4-2 ESD only) and space-constrained PCBs. | Choose SMAJ160A-M3 only when board area is critical and surge threat level is below 400 W; verify thermal margin with layout simulation. |
Compared with SMBJ160AHM3/I, SMBJ160AHE3/I offers identical protection performance without halogen-free assurance, while SMAJ160A-M3 trades 33 % lower pulse power and higher thermal resistance for 30 % smaller footprint-requiring careful trade-off analysis between surge robustness, compliance, and layout density.
Availability
SMBJ160AHM3/I is available at Aetrix Electronics and suitable for industrial motor drives, telecom power supplies, and automotive body control modules requiring stable component supply, halogen-free compliance, and AEC-Q101 qualification.
Supply support for SMBJ160AHM3/I 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
Vishay General Semiconductor is a global leader in discrete semiconductors, specializing in diodes, MOSFETs, optoelectronics, and passive components with emphasis on reliability and application-specific optimization.
The SMBJ series was engineered for high-energy transient suppression in harsh environments, targeting automotive, industrial, and telecom systems where consistent clamping performance and long-term stability under thermal cycling are critical.
FAQ
What is the maximum clamping voltage of SMBJ160AHM3/I at its rated peak pulse current?
The SMBJ160AHM3/I has a maximum clamping voltage (VC) of 259 V at its rated peak pulse current (IPPM) of 2.3 A, measured using the standardized 10/1000 µs double-exponential waveform. This value is guaranteed across the full operating temperature range (-55 °C to +150 °C) and defines the upper voltage limit imposed on protected circuitry during surge events. The SMBJ160AHM3/I maintains this clamping performance due to its low incremental surge resistance and stable avalanche characteristics.
Is SMBJ160AHM3/I suitable for automotive applications?
Yes, SMBJ160AHM3/I is AEC-Q101 qualified and specifically designed for automotive use cases including body control modules, lighting drivers, and infotainment power rails. Its HM3 suffix denotes halogen-free, RoHS-compliant construction validated to AEC-Q101 stress test requirements-including temperature cycling, humidity bias HAST, and mechanical shock. The SMBJ160AHM3/I operates reliably from -55 °C to +150 °C junction temperature, supporting under-hood and cabin-mounted electronic control units.
How does the SMBJ160AHM3/I differ from bidirectional TVS diodes like SMBJ160CA?
The SMBJ160AHM3/I is unidirectional and functions only during reverse-biased overvoltage events (cathode positive), while SMBJ160CA is bidirectional and clamps in both polarities. SMBJ160AHM3/I exhibits forward conduction capability (IFSM = 100 A) useful for reverse-battery protection, whereas SMBJ160CA lacks this feature. Additionally, SMBJ160AHM3/I has tighter VBR tolerance (178–197 V) versus SMBJ160CA's symmetric breakdown, making it preferable for DC rail protection where polarity is fixed.
What is the thermal resistance of SMBJ160AHM3/I, and how does it affect layout design?
The SMBJ160AHM3/I has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. This value assumes standard FR-4 PCB with no internal planes; adding thermal vias or larger copper areas reduces effective RθJA. For continuous power dissipation near 5.0 W, designers must ensure ambient temperature remains ≤50 °C or implement derating per Figure 2 in the datasheet to avoid exceeding the 150 °C maximum junction temperature.
Does SMBJ160AHM3/I require a heatsink for standard surge protection duty cycles?
No, SMBJ160AHM3/I does not require an external heatsink for typical transient suppression applications because its 600 W peak pulse power rating applies to non-repetitive, low-duty-cycle events (0.01 % duty cycle). The device is rated for 5.0 W steady-state power dissipation only on an infinite heatsink; in real-world PCB layouts with recommended 5.0 mm × 5.0 mm copper pads, thermal management relies on short-duration pulse handling rather than continuous conduction. Continuous DC leakage remains below 1 µA at 160 V, minimizing steady-state heating.
SMBJ160AHM3/I Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- 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:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
SMBJ160AHM3/I FAQ
1.How can I place an order for SMBJ160AHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ160AHM3/I 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 SMBJ160AHM3/I reliable?
The price and inventory of SMBJ160AHM3/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ160AHM3/I is usually 5 days.
3.What payment methods are accepted for SMBJ160AHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ160AHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ160AHM3/I?
SMBJ160AHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ160AHM3/I 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 SMBJ160AHM3/I?
For technical support, including SMBJ160AHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ160AHM3/I requirements.
6.How does Aetrix verify that SMBJ160AHM3/I is sourced from the original manufacturer or authorized distributors?
All SMBJ160AHM3/I 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 SMBJ160AHM3/I meets industry standards.
7.What is the process for return or replacement of SMBJ160AHM3/I?
All SMBJ160AHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ160AHM3/I, 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 SMBJ160AHM3/I part is unused and in its original packaging.
Return procedure for SMBJ160AHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ160AHM3/I Tags
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