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Vishay General Semiconductor - Diodes Division SMBJ16AHE3/5B
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- Part No.:
- SMBJ16AHE3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ16AHE3/5B.pdf
- Description:
- TVS DIODE 16VWM 26VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:8,572
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Product details
Overview
SMBJ16AHE3/5B from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping voltage transients on power and signal lines. It features a 16 V stand-off voltage (VWM), 17.8–19.7 V breakdown voltage (VBR) at 1 mA, 26.0 V maximum clamping voltage (VC) at 23.1 A peak pulse current, and 600 W peak pulse power rating with 10/1000 µs waveform - used to protect MOSFETs, ICs, and sensor interfaces in industrial power supplies and automotive control modules.
For engineers reviewing the SMBJ16AHE3/5B datasheet, SMBJ16AHE3/5B pinout, SMBJ16AHE3/5B application, or SMBJ16AHE3/5B equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification status, thermal resistance (RθJA = 100 °C/W), junction temperature range (–55 to +150 °C), and compliance with UL 497B surge protector classification.
Technical Context
This TVS diode operates as a clamping device that enters avalanche conduction when reverse voltage exceeds its breakdown threshold, diverting surge energy away from protected circuitry. Its glass-passivated junction ensures stable leakage performance and fast response time (<1 ns), while the low incremental surge resistance enables effective suppression of high-current transients induced by inductive switching or ESD events.
The SMBJ16AHE3/5B is rated for 600 W peak pulse power under 10/1000 µs waveform at 0.01% duty cycle, with derating above 25 °C per Fig. 2. Its 1.0 µA max reverse leakage at VWM supports low-power standby circuits, and the cathode-band marking confirms unidirectional polarity for correct PCB orientation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 16 V - Maximum continuous reverse operating voltage before clamping begins; defines safe operating margin for 15 V nominal rails. |
| VBR min/max | 17.8 V / 19.7 V at IT = 1 mA - Confirmed breakdown window ensures reliable turn-on without premature conduction. |
| VC @ IPPM | 26.0 V at 23.1 A - Clamped voltage seen by downstream circuit during worst-case 600 W surge; limits stress on 3.3 V/5 V logic. |
| PPPM | 600 W - Peak pulse power handling with 10/1000 µs waveform; validates protection against IEC 61000-4-5 Level 3 surges. |
| TJ max | +150 °C - Maximum junction temperature supports operation in under-hood automotive or enclosed industrial enclosures. |
| RθJA | 100 °C/W - Thermal resistance from junction to ambient on standard 0.2" × 0.2" copper pads; informs heatsinking requirements. |
| Leakage @ VWM | 1.0 µA max - Ultra-low reverse leakage preserves battery life and avoids false triggering in high-impedance sensor inputs. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, matte tin-plated leads, RoHS-compliant and AEC-Q101 qualified. Cathode indicated by band marking on body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Reverse surge return path | Connected to ground or low-impedance return plane; carries full surge current during clamping. |
| Cathode | Reverse voltage sensing / Clamping node | Connected to protected line (e.g., 12 V rail or CAN_H); voltage referenced to anode during transient event. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units and body electronics requiring reliability over temperature and lifetime. |
| 600 W peak pulse power | Withstands repeated 10/1000 µs surges up to 23.1 A without degradation - meets IEC 61000-4-5 surge immunity requirements. |
| Low clamping ratio (VC/VBR ≈ 1.38) | Minimizes overvoltage stress on protected ICs; enables use with 3.3 V, 5 V, and 12 V systems without additional series impedance. |
| MSL Level 1, 260 °C reflow compatible | Supports lead-free assembly without moisture sensitivity concerns; eliminates pre-bake requirement in SMT lines. |
| Glass passivated junction | Ensures stable VBR and low leakage across temperature and humidity; improves long-term reliability in harsh environments. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V supply lines feeding microcontrollers and CAN transceivers in vehicle body control modules. IC Role / Device Role / Timing Role: Unidirectional TVS clamping transient spikes from load dump or alternator ripple. Use Value: Limits voltage to ≤26.0 V during 600 W surges, preventing latch-up or gate oxide damage in downstream 3.3 V logic. | Use Scenario: Safeguarding analog outputs of pressure/temperature sensors connected to PLC analog input cards. IC Role / Device Role / Timing Role: Standoff clamping device placed between sensor output and ADC front-end. Use Value: 1.0 µA leakage at 16 V avoids loading high-impedance sensor outputs; fast <1 ns response prevents transient coupling into measurement path. |
| DC-DC Converter Input Protection | Motor Drive Gate Driver Protection |
Use Scenario: Shielding buck converter inputs from back-EMF spikes generated by brushed DC motors in factory automation equipment. IC Role / Device Role / Timing Role: Primary surge shunt on 24 V input rail upstream of input capacitor and controller IC. Use Value: 23.1 A peak pulse current capacity handles repetitive inductive kickback without thermal runaway. | Use Scenario: Protecting high-side and low-side gate drivers in half-bridge motor inverters from Miller-induced voltage overshoot. IC Role / Device Role / Timing Role: Local clamping element mounted directly at driver IC supply pins. Use Value: Low RθJA (100 °C/W) and +150 °C TJ max allow placement near heat-generating drivers without derating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ16A-E3/5B | Commercial-grade variant; lacks AEC-Q101 qualification and automotive traceability. | Approved for industrial and consumer applications only; not suitable for automotive OEM designs. | Select when cost sensitivity outweighs automotive qualification requirements and lifecycle traceability is not mandated. |
| SMBJ16CAHE3/5B | Bidirectional version; symmetrical VBR (17.8–19.7 V) in both polarities; same clamping and power ratings. | Required for AC-coupled or differential signal lines (e.g., RS-485, CAN) where polarity reversal occurs. | Choose for bidirectional protection needs; verify layout compatibility as cathode band marking is omitted on bidirectional variants. |
Compared with SMBJ16A-E3/5B, the SMBJ16AHE3/5B adds AEC-Q101 qualification and automotive traceability without sacrificing electrical specs; versus SMBJ16CAHE3/5B, it provides polarity-specific clamping essential for DC power rails but requires correct orientation during placement.
Availability
SMBJ16AHE3/5B is available at Aetrix Electronics and suitable for automotive ECUs, industrial sensor nodes, and DC-DC converter designs requiring stable component supply, long-term lifecycle support, and AEC-Q101-compliant surge protection.
Supply support for SMBJ16AHE3/5B 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 robust transient suppression in harsh environments - targeting automotive, industrial, and telecom infrastructure where failure due to voltage surges must be eliminated.
FAQ
What is the maximum clamping voltage of SMBJ16AHE3/5B and under what test condition?
The SMBJ16AHE3/5B has a maximum clamping voltage (VC) of 26.0 V, measured at a peak pulse current (IPPM) of 23.1 A using the standardized 10/1000 µs double-exponential surge waveform. This value represents the highest voltage imposed on the protected circuit during a worst-case transient event, ensuring downstream components like 3.3 V or 5 V ICs remain within safe operating limits. The SMBJ16AHE3/5B maintains this clamping performance across its full operating temperature range.
Is SMBJ16AHE3/5B suitable for automotive applications, and what qualification does it hold?
Yes, SMBJ16AHE3/5B is explicitly qualified to AEC-Q101 for automotive use, confirmed by Vishay's ordering code suffix "HE3". It meets stringent reliability requirements for temperature cycling, humidity, mechanical shock, and long-term stability in under-hood and cabin environments. The SMBJ16AHE3/5B is approved for engine control units, body electronics, and ADAS power domains where failure due to transients is unacceptable.
How does the leakage current of SMBJ16AHE3/5B affect low-power sensor circuits?
The SMBJ16AHE3/5B exhibits a maximum reverse leakage current of 1.0 µA at its 16 V stand-off voltage (VWM), making it suitable for battery-powered or high-impedance sensor interfaces where excessive leakage could disrupt biasing or drain energy. This ultra-low leakage ensures minimal impact on precision analog signals - for example, in thermistor or bridge-sensor front-ends - while maintaining fast transient response. The SMBJ16AHE3/5B achieves this without compromising clamping performance or surge rating.
What is the thermal resistance of SMBJ16AHE3/5B, and how does it influence PCB layout?
The SMBJ16AHE3/5B has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on minimum recommended 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. This value guides thermal design: for sustained 5.0 W power dissipation, ambient temperature must stay below 100 °C to keep junction temperature within the +150 °C limit. Layout best practices include maximizing copper area and using internal ground planes to reduce RθJA - critical in compact automotive modules where the SMBJ16AHE3/5B may operate near other heat sources.
Does SMBJ16AHE3/5B have UL recognition, and for which standards?
Yes, SMBJ16AHE3/5B carries Underwriters Laboratories (UL) recognition under file number E136766 for both unidirectional and bidirectional variants, classified per UL 497B for telecommunications and signal line protectors. This certification validates its safety and surge-handling capability in end-equipment requiring regulatory compliance - such as industrial gateways or automotive telematics units. The SMBJ16AHE3/5B's UL listing covers its entire specified operating range and is maintained through Vishay's certified manufacturing process.
SMBJ16AHE3/5B 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):
- 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBJ)
SMBJ16AHE3/5B FAQ
1.How can I place an order for SMBJ16AHE3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ16AHE3/5B 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 SMBJ16AHE3/5B reliable?
The price and inventory of SMBJ16AHE3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ16AHE3/5B is usually 5 days.
3.What payment methods are accepted for SMBJ16AHE3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ16AHE3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ16AHE3/5B?
SMBJ16AHE3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ16AHE3/5B 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 SMBJ16AHE3/5B?
For technical support, including SMBJ16AHE3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ16AHE3/5B requirements.
6.How does Aetrix verify that SMBJ16AHE3/5B is sourced from the original manufacturer or authorized distributors?
All SMBJ16AHE3/5B 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 SMBJ16AHE3/5B meets industry standards.
7.What is the process for return or replacement of SMBJ16AHE3/5B?
All SMBJ16AHE3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ16AHE3/5B, 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 SMBJ16AHE3/5B part is unused and in its original packaging.
Return procedure for SMBJ16AHE3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ16AHE3/5B Tags
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