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Vishay General Semiconductor - Diodes Division SMBJ16AHE3_B/I
- Part No.:
- SMBJ16AHE3_B/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ16AHE3_B/I.pdf
- Description:
- 600W,16V 5%,UNIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
SMBJ16AHE3_B/I from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in the SMB (DO-214AA) package, designed for clamping inductive switching transients and lightning-induced surges on power and signal lines. It features a 16 V stand-off 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 and sensor I/O in industrial motor drives.
For engineers reviewing the SMBJ16AHE3_B/I datasheet, SMBJ16AHE3_B/I pinout, SMBJ16AHE3_B/I application, or SMBJ16AHE3_B/I equivalent, key selection criteria include its AEC-Q101 qualification status, unidirectional polarity with cathode band marking, low incremental surge resistance, and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This TVS diode operates as a voltage-clamping protection device that enters avalanche breakdown when reverse voltage exceeds its 17.8–19.7 V breakdown range (VBR at 1.0 mA). Its response time is sub-nanosecond, enabling suppression of fast-rising ESD and surge events before downstream ICs are damaged.
The device exhibits a temperature coefficient of VBR of +0.089 %/°C and is rated for junction temperatures from –55 °C to +150 °C. Thermal resistance is 100 °C/W (junction-to-ambient) and 20 °C/W (junction-to-lead), requiring appropriate PCB copper area for sustained 5.0 W power dissipation.
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 1.0 mA - Confirmed breakdown threshold range; ensures reliable turn-on above system overvoltage thresholds. |
| VC @ IPPM | 26.0 V at 23.1 A - Clamped voltage during 600 W transient; limits stress on protected 24 V-rated components. |
| IPPM | 23.1 A (10/1000 µs) - Peak surge current handling capacity; validated with derating above 25 °C per Fig. 2. |
| PPPM | 600 W - Peak pulse power rating; supports repetitive surge duty cycle ≤ 0.01 % without thermal runaway. |
| TJ max. | +150 °C - Maximum junction temperature; enables operation in under-hood automotive and industrial ambient environments. |
| Package | SMB (DO-214AA) - Surface-mount outline with 5.59 mm × 4.06 mm footprint; compatible with J-STD-020 MSL Level 1 reflow profile (260 °C peak). |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case with matte tin-plated leads; polarity indicated by cathode band on one end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side (e.g., ground or return path) in unidirectional configuration; carries forward surge current up to 100 A (8.3 ms half-sine). |
| Cathode | Avalanche clamping terminal | Marked with band; connected to protected line (e.g., 12 V rail or sensor input); conducts reverse surge current to clamp voltage to ≤26.0 V. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Enables robust protection against IEC 61000-4-5 Level 4 surges (4 kV/2 Ω) without degradation across ≥1000 pulses. |
| AEC-Q101 qualified | Validated for automotive powertrain and body electronics applications requiring zero defect reliability under thermal cycling and humidity exposure. |
| Glass passivated junction | Ensures stable VBR and low leakage (<1.0 µA at VWM) over lifetime, even in high-humidity industrial environments. |
| Low-profile SMB package | 0.220" × 0.160" footprint with 0.086" height allows dense layout on space-constrained PCBs while maintaining thermal pad access. |
| MSL Level 1 moisture sensitivity | Permits unlimited floor life and standard reflow without baking; simplifies SMT manufacturing for high-volume production. |
Applications
| Industrial Motor Drives | Automotive Body Control Modules |
|---|---|
|
Use Scenario: Protection of gate drivers and feedback sensors against inductive kickback from brushed DC motors and solenoids. IC Role / Device Role / Timing Role: Unidirectional TVS placed between MOSFET gate and source to clamp negative-going transients below –0.7 V and positive spikes to ≤26.0 V. Use Value: Prevents gate oxide rupture and latch-up in logic-level MOSFETs operating from 12 V supplies subjected to >100 V switching spikes. |
Use Scenario: Input protection for LIN bus transceivers and door module microcontrollers exposed to load dump and jump-start conditions. IC Role / Device Role / Timing Role: Standoff clamping device on 12 V supply rail upstream of LDO regulators, triggered only during >16 V overvoltage events. Use Value: Maintains regulated 5 V/3.3 V output during 24 V load dump (ISO 7637-2 Pulse 5a) by limiting rail voltage to 26.0 V for <100 ms. |
| Consumer Power Adapters | Industrial Sensor Interfaces |
|
Use Scenario: Secondary-side overvoltage suppression in flyback converters powering USB-C PD controllers and display logic. IC Role / Device Role / Timing Role: Fast-response clamping element across 12 V or 19 V output rails, activated within <1 ns of transient onset. Use Value: Limits output overshoot to <26.0 V during transformer saturation or synchronous rectifier failure, preventing damage to downstream PMICs. |
Use Scenario: Reverse-polarity and surge protection for 4–20 mA loop-powered pressure and temperature transmitters in factory automation. IC Role / Device Role / Timing Role: Unidirectional shunt device installed between loop+ and loop−, conducting only during fault overvoltage conditions. Use Value: Survives repeated 1 kV/500 Ω surge injections (IEC 61000-4-5) while maintaining <1.0 µA leakage at 24 V loop supply. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ16AHM3_B/I | Halogen-free variant with identical electrical specs and AEC-Q101 qualification; same SMB package and pinout. | No difference in circuit behavior or layout; selected where halogen-free compliance is mandated (e.g., EU medical equipment). | Direct material substitution when RoHS + halogen-free requirements apply; no design change needed. |
| SMAJ16AHE3_A/I | Lower power rating: 400 W PPPM, 15.6 V VWM, 25.0 V VC at 16.0 A; SMA (DO-214AC) package with smaller 4.32 mm × 2.62 mm footprint. | Reduced surge margin; suitable only for less severe transients (e.g., IEC 61000-4-2 ESD, not full IEC 61000-4-5 surges). | Select when board space is constrained and surge threat level is limited to Class 3 ESD or low-energy switching noise. |
Compared with SMBJ16AHE3_B/I, the HM3 variant offers identical protection performance with halogen-free construction, while the SMAJ16AHE3_A/I trades 33 % lower pulse power and smaller size for applications where PCB real estate outweighs surge severity requirements.
Availability
SMBJ16AHE3_B/I is available at Aetrix Electronics and suitable for industrial motor drives, automotive body control modules, and consumer power adapters requiring stable component supply with AEC-Q101 validation and RoHS compliance.
Supply support for SMBJ16AHE3_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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and application-specific performance.
The SMBJ series was developed for high-reliability transient suppression in automotive, industrial, and computing systems where consistent clamping, low leakage, and AEC-Q101 qualification are mandatory.
FAQ
What is the maximum clamping voltage of SMBJ16AHE3_B/I under surge conditions?
The SMBJ16AHE3_B/I has a maximum clamping voltage (VC) of 26.0 V when subjected to its rated peak pulse current of 23.1 A using the standardized 10/1000 µs waveform. This value is measured at TA = 25 °C with devices mounted on 0.2" × 0.2" copper pads per JEDEC standards, and it defines the upper voltage limit imposed on protected circuits during transient events. The SMBJ16AHE3_B/I maintains this clamping performance across its full operating temperature range.
Is SMBJ16AHE3_B/I suitable for automotive applications?
Yes, SMBJ16AHE3_B/I is AEC-Q101 qualified and explicitly designated for automotive use with ordering code suffix "HE3". It meets the stress test requirements for temperature cycling, humidity bias, mechanical shock, and surge immunity defined in AEC-Q101 Rev D. The SMBJ16AHE3_B/I is commonly used in body control modules, lighting drivers, and infotainment power rails where 12 V system protection against load dump and ISO 7637-2 pulses is required.
How does the SMBJ16AHE3_B/I differ from bidirectional variants like SMBJ16CA?
The SMBJ16AHE3_B/I is unidirectional and features a cathode band marking; it conducts only in reverse breakdown and blocks forward current above ~0.7 V. In contrast, SMBJ16CA is bidirectional with symmetrical clamping in both polarities and no polarity marking. The SMBJ16AHE3_B/I provides lower leakage (<1.0 µA at 16 V) and higher surge current capability in single-polarity applications, whereas SMBJ16CA is used where AC-coupled or differential signal lines require protection in both directions.
What is the thermal resistance of SMBJ16AHE3_B/I and how does it affect layout?
The SMBJ16AHE3_B/I has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W and junction-to-lead resistance (RθJL) of 20 °C/W. To sustain its 5.0 W steady-state power dissipation, PCB layout must provide minimum 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal, as specified in the Vishay datasheet. Reducing pad area increases RθJA, risking thermal runaway during repetitive surges - a critical consideration in SMBJ16AHE3_B/I design-in.
Can SMBJ16AHE3_B/I be used in place of SMBJ15A or SMBJ17A?
SMBJ16AHE3_B/I is not a direct replacement for SMBJ15A (15 V VWM) or SMBJ17A (17 V VWM) due to its specific 16 V stand-off voltage and corresponding 17.8–19.7 V breakdown range. Substituting requires verifying that the 16 V VWM provides adequate margin above the protected circuit's normal operating voltage while still triggering before damage thresholds. The SMBJ16AHE3_B/I's clamping voltage of 26.0 V also differs from SMBJ15A (24.4 V) and SMBJ17A (27.6 V), affecting downstream component stress levels.
SMBJ16AHE3_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:
- 1
- Bidirectional Channels:
- -
- 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)
SMBJ16AHE3_B/I FAQ
1.How can I place an order for SMBJ16AHE3_B/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ16AHE3_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 SMBJ16AHE3_B/I reliable?
The price and inventory of SMBJ16AHE3_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 SMBJ16AHE3_B/I is usually 5 days.
3.What payment methods are accepted for SMBJ16AHE3_B/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ16AHE3_B/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ16AHE3_B/I?
SMBJ16AHE3_B/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ16AHE3_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 SMBJ16AHE3_B/I?
For technical support, including SMBJ16AHE3_B/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ16AHE3_B/I requirements.
6.How does Aetrix verify that SMBJ16AHE3_B/I is sourced from the original manufacturer or authorized distributors?
All SMBJ16AHE3_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 SMBJ16AHE3_B/I meets industry standards.
7.What is the process for return or replacement of SMBJ16AHE3_B/I?
All SMBJ16AHE3_B/I units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ16AHE3_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 SMBJ16AHE3_B/I part is unused and in its original packaging.
Return procedure for SMBJ16AHE3_B/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ16AHE3_B/I Tags
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