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Vishay General Semiconductor - Diodes Division SMB8J16CAHE3/5B
- Part No.:
- SMB8J16CAHE3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB8J16CAHE3/5B.pdf
- Description:
- TVS DIODE 16VWM 26VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:4,873
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Product details
Overview
SMB8J16CAHE3/5B from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed for high-energy surge protection on signal and power lines. It features a 16 V stand-off voltage (VWM), 26.0 V maximum clamping voltage (VC) at 30.8 A peak pulse current (IPPM), and 800 W peak pulse power (PPPM) with 10/1000 µs waveform - optimized for automotive-grade ESD and load-dump protection in sensor interfaces and power rails.
For engineers reviewing the SMB8J16CAHE3/5B datasheet, SMB8J16CAHE3/5B pinout, SMB8J16CAHE3/5B application, or SMB8J16CAHE3/5B equivalent, this AEC-Q101 qualified TVS offers verified bidirectional clamping performance, low leakage (<1.0 µA at VWM), and MSL Level 1 moisture sensitivity - critical for under-hood automotive electronics, industrial I/O protection, and robust PCB-level surge immunity design.
Technical Context
This device operates as a silicon avalanche diode with symmetrical bidirectional breakdown behavior, enabling suppression of both positive and negative transients without polarity constraints. Its glass-passivated junction ensures stable VBR (17.8–19.7 V) and low incremental surge resistance, supporting fast response (<1 ns) to ESD (IEC 61000-4-2) and lightning-induced surges (IEC 61000-4-5).
Thermally, it delivers RθJL = 20 °C/W and RθJA = 72 °C/W on standard 0.2" × 0.2" copper pads, allowing reliable operation up to TJ = +150 °C. The HE3 suffix confirms RoHS compliance and AEC-Q101 qualification per stress test conditions including HTOL, temperature cycling, and HTRB.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 16 V - Maximum continuous reverse voltage before significant leakage; sets operating margin below clamping threshold. |
| VBR (Breakdown Voltage) | 17.8 V min / 19.7 V max at IT = 1.0 mA - Defines precise avalanche initiation range for predictable turn-on behavior. |
| VC (Clamping Voltage) | 26.0 V at IPPM = 30.8 A - Limits transient voltage seen by downstream ICs during 10/1000 µs surge events. |
| PPPM (Peak Pulse Power) | 800 W - Sustains high-energy transients without failure when mounted per recommended pad layout. |
| ID (Reverse Leakage) | <1.0 µA at VWM - Ensures minimal power loss and signal integrity in always-on sensing circuits. |
| TJ max | +150 °C - Enables deployment in under-hood automotive environments and industrial enclosures. |
| AEC-Q101 Qualified | Yes - Validated for automotive reliability including HTOL, TC, and HTRB; supports PPAP documentation. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. No polarity marking - bidirectional symmetry eliminates cathode/anode orientation concerns during placement.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient conduction path | Both terminals function identically; enables bidirectional clamping without PCB layout dependency on polarity. |
| Case (body) | Thermal and mechanical interface | Non-electrical; transfers heat to copper pads; requires 0.2" × 0.2" (5.0 mm × 5.0 mm) minimum pad area per terminal per datasheet fig. 2. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines (e.g., CAN, LIN, RS-485) without external polarity management. |
| AEC-Q101 qualification | Validates long-term reliability in automotive applications including engine control units, body electronics, and ADAS sensors. |
| Low clamping ratio (VC/VWM = 1.625) | Minimizes overvoltage stress on protected ICs compared to higher-ratio TVS devices, improving system-level surge margin. |
| MSL Level 1 rating | Allows unlimited floor life and reflow compatibility up to 260 °C peak, eliminating bake requirements prior to assembly. |
| Glass-passivated junction | Ensures stable electrical parameters across temperature and lifetime, reducing parameter drift in harsh environments. |
Applications
| Automotive Sensor Protection | Industrial I/O Interface |
|---|---|
Use Scenario: Protecting analog output lines of pressure/temperature sensors in engine compartments exposed to ISO 7637-2 pulse 1, 2a, and 5a. IC Role / Device Role / Timing Role: Bidirectional TVS placed directly at connector entry point to clamp induced transients before reaching ADC input or signal conditioner. Use Value: Clamps 800 W surges to ≤26.0 V while maintaining <1.0 µA leakage - preserving sensor accuracy and preventing microcontroller reset. |
Use Scenario: Shielding 24 V DC digital input modules in PLCs from inductive kickback and field wiring surges. IC Role / Device Role / Timing Role: Primary surge suppression stage ahead of optocoupler or Schmitt trigger input circuitry. Use Value: Withstands repeated 10/1000 µs transients up to 30.8 A without degradation, extending module service life in factory automation. |
| Automotive Body Control Module | Consumer Appliance Motor Drive |
Use Scenario: Safeguarding LIN bus transceivers and window lift motor drivers against battery reverse connection and load dump. IC Role / Device Role / Timing Role: Bidirectional TVS integrated into LIN physical layer protection network alongside common-mode choke. Use Value: AEC-Q101 qualification ensures zero infant mortality in 15-year vehicle lifecycle; clamping action occurs within <1 ns. |
Use Scenario: Suppressing commutation spikes on BLDC motor gate drive signals in smart washing machines and HVAC fans. IC Role / Device Role / Timing Role: Localized TVS at MOSFET gate-source or half-bridge output node to prevent false triggering and latch-up. Use Value: 26.0 V VC limits gate oxide stress during 40 V+ spikes; SMB footprint allows dense placement near power stages. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ16CA-E3/52 | Same VWM (16 V), VC (26.0 V), and SMB package; lower PPPM (600 W vs. 800 W); commercial grade only (not AEC-Q101). | Limited to non-automotive industrial or consumer use where extended temperature cycling and HTOL validation are not required. | Select when cost sensitivity outweighs automotive qualification needs and surge energy remains ≤600 W. |
| SMCJ16CAHE3_A/H | Same VWM (16 V), higher PPPM (1500 W), larger SMC (DO-214AB) package; identical AEC-Q101 qualification and clamping performance. | Suitable for higher-energy surge environments (e.g., alternator load dump) but requires larger PCB area and different thermal pad layout. | Choose when system-level surge testing exceeds 800 W and board space permits SMC footprint. |
Compared with SMBJ16CA-E3/52 and SMCJ16CAHE3_A/H, SMB8J16CAHE3/5B uniquely balances AEC-Q101 compliance, 800 W surge capability, and compact SMB packaging - making it optimal for space-constrained automotive modules requiring validated reliability without SMC-level board real estate.
Availability
SMB8J16CAHE3/5B is available at Aetrix Electronics and suitable for automotive sensor protection, industrial I/O hardening, and body control module designs requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for SMB8J16CAHE3/5B 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, TVS devices, and power MOSFETs with emphasis on high-reliability, high-efficiency solutions.
The SMB8J series is part of Vishay's TRANSZORB® TVS platform, engineered specifically for automotive and industrial surge immunity - delivering consistent clamping performance, AEC-Q101 validation, and robust thermal design in surface-mount packages.
FAQ
What is the clamping voltage of SMB8J16CAHE3/5B at its rated peak pulse current?
The SMB8J16CAHE3/5B has a maximum clamping voltage (VC) of 26.0 V at its specified peak pulse current (IPPM) of 30.8 A, measured using the standardized 10/1000 µs waveform. This value is guaranteed across the full operating temperature range and reflects actual voltage limiting seen by protected circuitry during surge events - a key parameter for ensuring downstream ICs remain within absolute maximum ratings.
Is SMB8J16CAHE3/5B suitable for automotive applications?
Yes, SMB8J16CAHE3/5B is AEC-Q101 qualified and explicitly designated for automotive use via the "HE3" suffix. It undergoes rigorous stress testing including high-temperature operating life (HTOL), temperature cycling, and highly accelerated stress testing (HAST), making it appropriate for engine control units, body electronics, and ADAS sensor interfaces where reliability over 15 years is mandatory.
How does the bidirectional configuration of SMB8J16CAHE3/5B affect PCB layout?
The SMB8J16CAHE3/5B has no polarity marking and functions identically in either orientation due to its symmetrical bidirectional structure. This eliminates orientation-dependent placement errors and simplifies automated assembly - especially beneficial in high-density layouts for CAN, LIN, or RS-485 interfaces where signal line symmetry is inherent and polarity reversal must be tolerated.
What is the maximum operating junction temperature for SMB8J16CAHE3/5B?
The SMB8J16CAHE3/5B has a maximum junction temperature (TJ max) of +150 °C, enabling reliable operation in under-hood automotive environments and sealed industrial enclosures. This rating is validated under derated conditions per Figure 2 of the datasheet and assumes proper thermal management using the recommended 0.2" × 0.2" copper pad layout per terminal.
Does SMB8J16CAHE3/5B meet moisture sensitivity level (MSL) requirements for lead-free reflow?
Yes, SMB8J16CAHE3/5B meets MSL Level 1 per J-STD-020, with a maximum lead-free reflow peak temperature of 260 °C. This allows indefinite floor life and direct placement into standard Pb-free reflow profiles without baking - reducing manufacturing complexity and handling risk for high-volume automotive and industrial production.
SMB8J16CAHE3/5B 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:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 16V
- Voltage - Breakdown (Min):
- 17.8V
- Voltage - Clamping (Max) @ Ipp:
- 26V
- Current - Peak Pulse (10/1000µs):
- 30.8A
- Power - Peak Pulse:
- 800W
- 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 (SMB)
SMB8J16CAHE3/5B FAQ
1.How can I place an order for SMB8J16CAHE3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB8J16CAHE3/5B 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 SMB8J16CAHE3/5B reliable?
The price and inventory of SMB8J16CAHE3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMB8J16CAHE3/5B is usually 5 days.
3.What payment methods are accepted for SMB8J16CAHE3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB8J16CAHE3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB8J16CAHE3/5B?
SMB8J16CAHE3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB8J16CAHE3/5B 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 SMB8J16CAHE3/5B?
For technical support, including SMB8J16CAHE3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB8J16CAHE3/5B requirements.
6.How does Aetrix verify that SMB8J16CAHE3/5B is sourced from the original manufacturer or authorized distributors?
All SMB8J16CAHE3/5B 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 SMB8J16CAHE3/5B meets industry standards.
7.What is the process for return or replacement of SMB8J16CAHE3/5B?
All SMB8J16CAHE3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMB8J16CAHE3/5B, 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 SMB8J16CAHE3/5B part is unused and in its original packaging.
Return procedure for SMB8J16CAHE3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMB8J16CAHE3/5B Tags
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