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Vishay General Semiconductor - Diodes Division SMBJ16CAHM3_B/I
- Part No.:
- SMBJ16CAHM3_B/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ16CAHM3_B/I.pdf
- Description:
- 600W,16V 5%,BIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:3,780
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Product details
Overview
SMBJ16CAHM3_B/I from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping voltage transients on signal or power lines. It features a 16 V standoff voltage (VWM), 26.0 V maximum clamping voltage (VC) at 23.1 A peak pulse current (IPPM), and 600 W peak pulse power (10/1000 µs waveform), commonly deployed to protect MOSFET gates, sensor interfaces, and industrial I/O lines against ESD and inductive switching surges.
For engineers reviewing the SMBJ16CAHM3_B/I datasheet, SMBJ16CAHM3_B/I pinout, SMBJ16CAHM3_B/I application, or SMBJ16CAHM3_B/I equivalent, key selection criteria include bidirectional clamping capability, 150 °C junction temperature rating, halogen-free RoHS-compliant construction (HM3 suffix), and AEC-Q101 qualification suitability for automotive-grade transient protection without derating.
Technical Context
This device operates as a silicon avalanche diode with symmetrical breakdown in both polarities, enabling suppression of positive and negative transients without polarity sensitivity. Its glass-passivated junction ensures stable VBR (17.8–19.7 V) and low incremental surge resistance, while the MSL Level 1 moisture sensitivity rating supports lead-free reflow up to 260 °C peak.
The SMBJ16CAHM3_B/I delivers fast response time (<1 ps) and excellent clamping ratio (VC/VWM = 1.625), making it suitable for protecting sensitive analog inputs and digital communication lines where low let-through voltage is critical. Thermal resistance is specified at RθJA = 100 °C/W (on 0.2" × 0.2" copper pads), defining its power dissipation limits under repetitive surge conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 16 V - Maximum continuous reverse operating voltage before clamping begins; defines safe operating margin for 12 V nominal systems. |
| VBR min/max | 17.8 V / 19.7 V at 1 mA - Verified breakdown threshold range ensuring consistent turn-on across production lots. |
| VC @ IPPM | 26.0 V at 23.1 A - Clamped voltage during 10/1000 µs surge; determines maximum stress imposed on protected downstream circuitry. |
| PPPM | 600 W - Peak pulse power handling capacity; enables robust protection against lightning-induced surges per IEC 61000-4-5. |
| IPPM | 23.1 A - Peak surge current supported at rated clamping voltage; used to size PCB trace width and layout thermal relief. |
| TJ max | +150 °C - Maximum junction temperature; allows operation in under-hood automotive or high-ambient industrial environments. |
| Package | SMB (DO-214AA) - Surface-mount outline with 5.59 mm × 4.06 mm footprint; compatible with standard SMT pick-and-place and reflow profiles. |
Pinout & Package
Package: SMB (DO-214AA), bidirectional configuration with no polarity marking; symmetrical terminals allow mounting in either orientation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Transient conduction path | Both terminals function identically; conducts bidirectionally when voltage exceeds ±VBR, eliminating need for orientation-aware layout. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines (e.g., RS-485, CAN bus) without external polarity management. |
| 600 W peak pulse power (10/1000 µs) | Supports compliance with IEC 61000-4-5 Level 4 (4 kV line-to-line) surge immunity testing in industrial control applications. |
| Halogen-free, RoHS-compliant (HM3 suffix) | Fulfills environmental compliance requirements for automotive and EU-based industrial equipment without compromising surge performance. |
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing-suitable for body electronics and ADAS sensor interfaces. |
| MSL Level 1, 260 °C peak reflow | Permits use in standard lead-free assembly processes without baking or special handling, reducing manufacturing overhead. |
Applications
| Industrial Motor Drives | Automotive Sensor Interfaces |
|---|---|
Use Scenario: Protection of gate drivers and feedback sensing lines in variable-frequency drives exposed to inductive kickback from 3-phase motors. IC Role / Device Role / Timing Role: Bidirectional TVS clamping element placed directly at motor controller IC input pins to limit transient overvoltage. Use Value: Limits let-through voltage to ≤26.0 V during 23.1 A surges, preventing latch-up or oxide breakdown in isolated gate drivers and op-amps. |
Use Scenario: ESD and load-dump protection for pressure, temperature, and position sensors connected to vehicle body control modules (BCMs). IC Role / Device Role / Timing Role: Primary transient suppressor on sensor supply and analog output lines, positioned before signal conditioning circuitry. Use Value: Withstands 150 °C ambient and meets AEC-Q101, ensuring long-term reliability in engine bay and chassis-mounted sensor assemblies. |
| RS-485 Communication Lines | Power Supply Input Rails |
Use Scenario: Surge protection on differential data lines in factory automation PLCs and distributed I/O nodes subjected to ground potential differences. IC Role / Device Role / Timing Role: Symmetrical clamping device across A/B bus lines to suppress common-mode and differential transients simultaneously. Use Value: Bidirectional operation eliminates need for dual unidirectional devices, reducing BOM count and PCB area while maintaining <1 ns response. |
Use Scenario: Secondary-level transient suppression on 12 V or 24 V DC input rails feeding embedded controllers and power management ICs. IC Role / Device Role / Timing Role: Fast-acting shunt limiter that diverts surge energy away from upstream regulators and downstream logic. Use Value: 600 W rating handles repetitive 10/1000 µs surges up to 0.01% duty cycle, extending system uptime in harsh electrical environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ16CAHE3_B/I | RoHS-compliant but not halogen-free; lacks AEC-Q101 qualification; same VWM, VC, and PPPM. | Approved for commercial/industrial use only; unsuitable for automotive applications requiring halogen-free or AEC-Q101 compliance. | Select when cost-sensitive industrial designs do not require halogen-free or automotive qualification. |
| SMAJ16CAHM3_A/I | Lower 400 W PPPM; SMA package (smaller footprint, higher RθJA); identical VWM and VC ratings. | Limited to lower-energy surge environments; less thermal margin in high-ambient or high-duty-cycle applications. | Choose for space-constrained layouts where 400 W surge margin is sufficient and thermal derating is managed via layout. |
Compared with SMBJ16CAHE3_B/I and SMAJ16CAHM3_A/I, the SMBJ16CAHM3_B/I uniquely combines halogen-free construction, AEC-Q101 qualification, and full 600 W surge capability in the SMB package-making it the preferred choice for automotive and high-reliability industrial deployments requiring verified long-term stability.
Availability
SMBJ16CAHM3_B/I is available at Aetrix Electronics and suitable for industrial motor drives, automotive sensor interfaces, RS-485 communication lines, and DC power supply input rails requiring stable component supply and guaranteed long-term sourcing.
Supply support for SMBJ16CAHM3_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, MOSFETs, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The SMBJ series is engineered for high-energy transient suppression in automotive, industrial, and telecom infrastructure-designed to meet stringent AEC-Q101, IEC 61000-4-5, and UL 497B standards with repeatable clamping performance.
FAQ
What is the standoff voltage rating of SMBJ16CAHM3_B/I?
The SMBJ16CAHM3_B/I has a maximum reverse standoff voltage (VWM) of 16 V, meaning it remains non-conductive up to this DC or RMS voltage level. This rating ensures compatibility with 12 V nominal systems while providing adequate margin above typical operating voltages to avoid leakage or premature conduction during normal operation.
Is SMBJ16CAHM3_B/I suitable for automotive applications?
Yes, SMBJ16CAHM3_B/I is AEC-Q101 qualified and halogen-free (HM3 suffix), making it suitable for automotive applications including body electronics, ADAS sensor interfaces, and infotainment power rails. Its 150 °C maximum junction temperature and validated reliability testing ensure robust performance under vehicle environmental stresses.
What does the "CA" suffix indicate in SMBJ16CAHM3_B/I?
The "CA" suffix in SMBJ16CAHM3_B/I denotes a bidirectional configuration-meaning the device provides symmetrical transient suppression for both positive and negative voltage excursions. Unlike unidirectional variants (e.g., SMBJ16A), it requires no polarity alignment during placement and protects AC-coupled or floating circuits inherently.
How does SMBJ16CAHM3_B/I compare to SMAJ16CAHM3_A/I in terms of surge capability?
SMBJ16CAHM3_B/I delivers 600 W peak pulse power (10/1000 µs), whereas SMAJ16CAHM3_A/I is rated for 400 W. The SMB package also offers lower thermal resistance (RθJA = 100 °C/W vs. ~130 °C/W for SMA), enabling better sustained surge handling and reduced derating in high-temperature environments.
What is the clamping voltage of SMBJ16CAHM3_B/I at its rated surge current?
The SMBJ16CAHM3_B/I clamps to a maximum of 26.0 V at its rated peak pulse current of 23.1 A (10/1000 µs waveform). This clamping voltage defines the upper voltage limit imposed on protected circuitry during transient events and is critical for ensuring downstream ICs remain within their absolute maximum ratings.
SMBJ16CAHM3_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):
- 16V
- Voltage - Breakdown (Min):
- 17.8V
- Voltage - Clamping (Max) @ Ipp:
- 26V
- Current - Peak Pulse (10/1000µs):
- 23.1A
- 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)
SMBJ16CAHM3_B/I FAQ
1.How can I place an order for SMBJ16CAHM3_B/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ16CAHM3_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 SMBJ16CAHM3_B/I reliable?
The price and inventory of SMBJ16CAHM3_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 SMBJ16CAHM3_B/I is usually 5 days.
3.What payment methods are accepted for SMBJ16CAHM3_B/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ16CAHM3_B/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ16CAHM3_B/I?
SMBJ16CAHM3_B/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ16CAHM3_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 SMBJ16CAHM3_B/I?
For technical support, including SMBJ16CAHM3_B/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ16CAHM3_B/I requirements.
6.How does Aetrix verify that SMBJ16CAHM3_B/I is sourced from the original manufacturer or authorized distributors?
All SMBJ16CAHM3_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 SMBJ16CAHM3_B/I meets industry standards.
7.What is the process for return or replacement of SMBJ16CAHM3_B/I?
All SMBJ16CAHM3_B/I units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ16CAHM3_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 SMBJ16CAHM3_B/I part is unused and in its original packaging.
Return procedure for SMBJ16CAHM3_B/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ16CAHM3_B/I Tags
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