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Vishay General Semiconductor - Diodes Division SMBJ160CAHM3_B/I
- Part No.:
- SMBJ160CAHM3_B/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ160CAHM3_B/I.pdf
- Description:
- 600W,160V 5%,BIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:8,912
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Product details
Overview
SMBJ160CAHM3_B/I from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the SMB (DO-214AA) package, designed for clamping voltage transients on power and signal lines. 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 (IPPM), and 600 W peak pulse power capability with a 10/1000 µs waveform - used to protect MOSFETs, ICs, and sensor interfaces in industrial power supplies.
For engineers reviewing the SMBJ160CAHM3_B/I datasheet, SMBJ160CAHM3_B/I pinout, SMBJ160CAHM3_B/I application, or SMBJ160CAHM3_B/I equivalent, key selection criteria include bidirectional clamping behavior, AEC-Q101 qualification status, halogen-free RoHS compliance, thermal resistance (RθJA = 100 °C/W), and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This device operates as a voltage-clamping protector with symmetrical reverse/forward conduction characteristics due to its bidirectional construction. It responds to transient overvoltages within picoseconds and maintains low incremental surge resistance during 10/1000 µs surges up to 2.3 A, enabling effective suppression of inductive switching spikes and ESD events.
The SMBJ160CAHM3_B/I uses a glass-passivated silicon junction and is rated for operation from –55 °C to +150 °C junction temperature. Its M3 suffix confirms halogen-free, RoHS-compliant construction and JESD201 Class 2 whisker resistance, while the "HM3" ordering code indicates AEC-Q101 qualification and 13" tape-and-reel packaging (I-type).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 160 V - maximum continuous reverse operating voltage before clamping begins |
| VBR min/max | 178 V / 197 V at 1 mA - guaranteed breakdown range defining turn-on threshold |
| VC @ IPPM | 259 V at 2.3 A - clamped voltage seen by protected circuit during worst-case surge |
| PPPM | 600 W - peak transient energy handling per 10/1000 µs waveform under derated conditions |
| RθJA | 100 °C/W - thermal resistance from junction to ambient on standard 0.2" × 0.2" PCB copper pads |
| TJ max | +150 °C - maximum allowable junction temperature for reliable long-term operation |
| MSL Level | Level 1 (J-STD-020) - unlimited floor life at ≤30 °C / 60% RH, reflow peak 260 °C |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional configuration with no polarity marking. Dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H), matte tin-plated leads solderable per J-STD-002.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (Anode) | Transient current return path | Both terminals are functionally symmetric; current flows bidirectionally during overvoltage events |
| Anode (Cathode) | Transient current entry point | No polarity marking required; identical electrical behavior in either direction |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal/power lines without polarity concerns |
| 600 W peak pulse power | Supports robust immunity against IEC 61000-4-5 Level 4 surges (4 kV/2 Ω) when properly mounted |
| AEC-Q101 qualified | Validated for automotive powertrain and body electronics applications requiring high reliability |
| Halogen-free & RoHS | Meets environmental compliance requirements for industrial and consumer end equipment |
| Low-profile SMB package | Enables high-density PCB layouts and compatibility with standard SMT pick-and-place equipment |
Applications
| Industrial Motor Drives | Automotive Body Control Modules |
|---|---|
Use Scenario: Protection of gate drivers and microcontroller I/O lines against inductive kickback from relay and solenoid switching. IC Role / Device Role / Timing Role: Voltage clamping element placed across DC bus or control signal traces to limit transient excursions. Use Value: Prevents latch-up or permanent damage to 3.3 V/5 V logic inputs and 100 V-class MOSFET gates during 100 A inductive turn-off events. | Use Scenario: Surge suppression on LIN bus lines and power supply inputs in door modules and seat controllers. IC Role / Device Role / Timing Role: Bidirectional TVS placed between LIN line and ground to clamp ±30 V transients per ISO 16750-2. Use Value: Maintains communication integrity during load dump and jump-start events while meeting AEC-Q101 stress test requirements. |
| Telecom Power Supplies | Industrial Sensor Interfaces |
Use Scenario: Input-stage protection on 48 V telecom rectifiers exposed to lightning-induced surges on primary distribution lines. IC Role / Device Role / Timing Role: First-line transient suppressor upstream of DC/DC converters and PMICs. Use Value: Limits input voltage to ≤259 V during 600 W surges, preventing downstream converter shutdown or overvoltage failure. | Use Scenario: Protection of analog front-end inputs (e.g., 4–20 mA loops, RTD bridges) in programmable logic controllers. IC Role / Device Role / Timing Role: Low-capacitance (<50 pF) clamping device placed directly at connector entry points. Use Value: Preserves signal fidelity below 1 MHz while suppressing ESD (IEC 61000-4-2 ±8 kV contact) and fast transients (IEC 61000-4-4). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ160CAHE3_B/I | Same electrical specs; RoHS-compliant but not halogen-free; no AEC-Q101 qualification | Approved for commercial-grade industrial use only; not suitable for automotive production | Select when halogen-free or automotive qualification is not required and cost optimization is prioritized |
| SAC160CA | Same VWM/VBR/VC ratings; higher RθJA (125 °C/W); non-AEC-Q101; different package (SMA) | Larger footprint; lower thermal performance limits sustained surge duty cycles | Choose only if SMB footprint is unavailable and thermal derating can be accommodated in layout |
Compared with SMBJ160CAHM3_B/I, the HE3 variant lacks halogen-free and automotive qualification, while the SAC160CA trades compact SMB size and thermal efficiency for legacy SMA compatibility - making SMBJ160CAHM3_B/I optimal for space-constrained, thermally demanding, and automotive-qualified designs.
Availability
SMBJ160CAHM3_B/I is available at Aetrix Electronics and suitable for industrial motor drives, automotive body control modules, and telecom power supplies requiring stable component supply, AEC-Q101 validation, and halogen-free compliance.
Supply support for SMBJ160CAHM3_B/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, rectifiers, TVS devices, and optoelectronics with emphasis on reliability and application-specific performance.
The SMBJ series was developed for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom systems where robustness, small footprint, and standardized SMT compatibility are critical.
FAQ
What is the clamping voltage of SMBJ160CAHM3_B/I at its rated peak pulse current?
The SMBJ160CAHM3_B/I has a maximum clamping voltage (VC) of 259 V at its specified peak pulse current (IPPM) of 2.3 A, measured using the standard 10/1000 µs waveform. This value ensures protected circuits experience no more than 259 V during transient events, preserving downstream IC and MOSFET integrity. The SMBJ160CAHM3_B/I achieves this with low incremental surge resistance and fast response time.
Is SMBJ160CAHM3_B/I suitable for automotive applications?
Yes, SMBJ160CAHM3_B/I is AEC-Q101 qualified and manufactured with halogen-free, RoHS-compliant materials - making it suitable for automotive body electronics, powertrain subsystems, and infotainment power rails. Its operating temperature range (–55 °C to +150 °C), MSL Level 1 rating, and JESD201 Class 2 whisker resistance meet stringent automotive production requirements. The SMBJ160CAHM3_B/I is explicitly designated for automotive use via its HM3 suffix.
How does the bidirectional nature of SMBJ160CAHM3_B/I affect its placement on the PCB?
The SMBJ160CAHM3_B/I has no polarity marking and exhibits identical clamping behavior in both directions, so orientation on the PCB is not critical - it can be placed across any two nodes requiring symmetrical overvoltage protection. This simplifies layout, eliminates assembly errors, and supports AC-coupled or floating signal lines. Unlike unidirectional TVS diodes, the SMBJ160CAHM3_B/I requires no cathode alignment check during automated placement.
What is the thermal resistance of SMBJ160CAHM3_B/I, and how does it impact layout design?
The SMBJ160CAHM3_B/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. To maintain safe junction temperatures during repetitive surges, designers must provide adequate copper area and avoid excessive trace length. The SMBJ160CAHM3_B/I's low RθJA enables reliable operation in compact industrial and automotive modules without additional heatsinking.
Does SMBJ160CAHM3_B/I meet industry surge immunity standards such as IEC 61000-4-5?
Yes, the SMBJ160CAHM3_B/I's 600 W peak pulse power rating and 259 V clamping voltage enable compliance with IEC 61000-4-5 Level 4 (4 kV line-to-ground, 2 Ω source impedance) when implemented with proper PCB layout - including short traces, direct grounding, and recommended 5.0 mm × 5.0 mm copper pads. Its fast response time and low dynamic impedance ensure effective energy diversion before sensitive components are stressed. The SMBJ160CAHM3_B/I is widely deployed in certified industrial and automotive systems meeting these standards.
SMBJ160CAHM3_B/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:
- 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:
- 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)
SMBJ160CAHM3_B/I FAQ
1.How can I place an order for SMBJ160CAHM3_B/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ160CAHM3_B/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 SMBJ160CAHM3_B/I reliable?
The price and inventory of SMBJ160CAHM3_B/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ160CAHM3_B/I is usually 5 days.
3.What payment methods are accepted for SMBJ160CAHM3_B/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ160CAHM3_B/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ160CAHM3_B/I?
SMBJ160CAHM3_B/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ160CAHM3_B/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 SMBJ160CAHM3_B/I?
For technical support, including SMBJ160CAHM3_B/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ160CAHM3_B/I requirements.
6.How does Aetrix verify that SMBJ160CAHM3_B/I is sourced from the original manufacturer or authorized distributors?
All SMBJ160CAHM3_B/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 SMBJ160CAHM3_B/I meets industry standards.
7.What is the process for return or replacement of SMBJ160CAHM3_B/I?
All SMBJ160CAHM3_B/I units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ160CAHM3_B/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 SMBJ160CAHM3_B/I part is unused and in its original packaging.
Return procedure for SMBJ160CAHM3_B/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ160CAHM3_B/I Tags
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