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Vishay General Semiconductor - Diodes Division SMB8J16CAHE3_B/I
- Part No.:
- SMB8J16CAHE3_B/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB8J16CAHE3_B/I.pdf
- Description:
- 800W,16V 5%,BIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:8,125
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Product details
Overview
SMB8J16CAHE3_B/I 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 sensor interfaces and industrial I/O protection.
For engineers reviewing the SMB8J16CAHE3_B/I datasheet, SMB8J16CAHE3_B/I pinout, SMB8J16CAHE3_B/I application, or SMB8J16CAHE3_B/I equivalent, this AEC-Q101 qualified TVS delivers verified bidirectional clamping performance, low leakage (<1.0 µA at VWM), and MSL Level 1 moisture sensitivity - critical for under-hood automotive modules and high-reliability industrial controllers.
Technical Context
This device operates as a silicon avalanche diode with symmetrical breakdown characteristics, enabling bidirectional transient suppression without polarity dependency. Its glass-passivated junction ensures stable VBR (17.8–19.7 V) and fast response time (<1 ns), while the low incremental surge resistance supports consistent clamping under repetitive surges.
The SMB8J16CAHE3_B/I is rated for TJ = –55 °C to +150 °C and meets AEC-Q101 stress test requirements including HTGB, HTRB, and temperature cycling. Its thermal resistance (RθJL = 20 °C/W) and pad-layout-dependent RθJA = 72 °C/W enable reliable operation on standard 5.0 mm × 5.0 mm copper pads per terminal.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 16 V - maximum continuous reverse operating voltage before clamping begins; defines safe interface voltage margin for 12 V automotive systems. |
| VBR min/max | 17.8 V / 19.7 V at IT = 1.0 mA - tight breakdown tolerance ensures predictable turn-on during transients. |
| VC @ IPPM | 26.0 V at IPPM = 30.8 A - clamping voltage limits downstream IC stress during 800 W surge events. |
| ID @ VWM | <1.0 µA - ultra-low leakage preserves signal integrity and battery life in always-on sensor circuits. |
| PPPM | 800 W (10/1000 µs) - energy-handling capacity sufficient for ISO 7637-2 Pulse 1/2a/5a and IEC 61000-4-5 Level 3 surges. |
| TJ max | +150 °C - enables placement near heat sources in engine control units and motor drives. |
| AEC-Q101 | Qualified - validated for automotive use including temperature cycling, humidity bias, and mechanical shock per AEC specification. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional configuration with no polarity marking - symmetric terminals simplify PCB layout and eliminate orientation errors during automated assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient conduction path | Both terminals function identically; bidirectional clamping occurs regardless of surge polarity - eliminates need for directional placement. |
| Cathode Band (absent) | Polarity indicator | Not present on bidirectional variants - confirms device symmetry and prevents misinterpretation during inspection or rework. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive under-hood applications including temperature cycling, high-temp bias, and mechanical robustness testing. |
| Glass-passivated junction | Ensures long-term parameter stability and resistance to environmental degradation in humid or chemically aggressive environments. |
| MSL Level 1 (260 °C peak) | Enables standard lead-free reflow without pre-baking, reducing manufacturing complexity and cost. |
| Low clamping ratio (VC/VBR ≈ 1.46) | Minimizes overvoltage exposure to protected ICs - critical for 3.3 V or 5 V logic interfacing with 12 V supply domains. |
| Matte tin-plated leads | Guarantees solderability per J-STD-002 and whisker resistance per JESD 201 Class 2 for long-term reliability. |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump and inductive switching transients in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed directly at connector entry point to shunt surge energy before reaching signal conditioning circuitry. Use Value: Limits transient voltage to ≤26.0 V during 800 W surges, preventing latch-up or gate oxide damage in 5 V/3.3 V interface ICs. |
Use Scenario: Safeguarding digital input/output channels on programmable logic controller (PLC) modules exposed to field wiring surges in factory automation. IC Role / Device Role / Timing Role: Primary surge suppression element on 24 V DC I/O lines, coordinated with series impedance for energy division. Use Value: Withstands repeated 1 kV/500 A surges per IEC 61000-4-5, maintaining <1.0 µA leakage to avoid false triggering of optocoupled inputs. |
| Telecom Power Interface | Consumer Appliance Motor Control |
|
Use Scenario: Protecting PoE-powered Ethernet PHYs and auxiliary DC-DC converters from lightning-induced surges on telecom infrastructure equipment. IC Role / Device Role / Timing Role: Secondary-level TVS on 48 V power rails, working in concert with primary GDT or MOV stages to refine clamping precision. Use Value: Fast <1 ns response captures early surge rise-time, while 20 °C/W junction-to-lead thermal resistance enables localized heat dissipation without board-level derating. |
Use Scenario: Shielding microcontroller GPIOs and gate drivers in smart home appliances (e.g., washing machine motor inverters) from commutation spikes. IC Role / Device Role / Timing Role: Localized TVS at motor driver IC inputs to suppress cross-talk and back-EMF coupling into logic sections. Use Value: 16 V VWM aligns with 12 V control rail; 26.0 V VC ensures MOSFET gate oxide remains below 30 V rating during worst-case 800 W transients. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMB8J16CAHM3_B/I | Halogen-free version with identical electrical specs and AEC-Q101 qualification; same SMB package and pinout. | Required where halogen-free compliance (IEC 61249-2-21) is mandated for end-product environmental certification. | Select SMB8J16CAHM3_B/I when RoHS + halogen-free material declaration is contractually required. |
| SMAJ16CAHE3_A/H | Lower PPPM (400 W), smaller SMA (DO-214AC) package, same VWM/VC but higher RθJA (110 °C/W). | Suitable for space-constrained consumer electronics with lower surge threat levels (e.g., USB port protection), not automotive-grade. | Choose SMAJ16CAHE3_A/H only for non-automotive designs where 400 W surge capability suffices and board area is premium. |
Compared with SMB8J16CAHE3_B/I, the HM3 variant adds halogen-free compliance without performance trade-offs, while the SMAJ16CAHE3_A/H offers footprint reduction at the cost of 50 % lower surge power handling and reduced thermal robustness - making SMB8J16CAHE3_B/I the optimal choice for AEC-Q101-compliant, high-energy industrial and automotive applications.
Availability
SMB8J16CAHE3_B/I is available at Aetrix Electronics and suitable for automotive ECU design, industrial PLC development, and telecom power interface projects requiring stable component supply with full AEC-Q101 traceability and long-term lifecycle support.
Supply support for SMB8J16CAHE3_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 high-reliability diodes, MOSFETs, and passive components for automotive, industrial, and computing markets.
The SMB8J16CAHE3_B/I belongs to Vishay's TRANSZORB® TVS family, engineered specifically for robust, standardized surge protection in harsh-environment electronics - emphasizing AEC-Q101 qualification, low clamping variance, and automated assembly compatibility.
FAQ
What is the clamping voltage of SMB8J16CAHE3_B/I at its rated peak pulse current?
The SMB8J16CAHE3_B/I has a maximum clamping voltage (VC) of 26.0 V when subjected to its peak pulse current (IPPM) of 30.8 A under a 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and guarantees that protected downstream circuitry will not experience voltages exceeding 26.0 V during defined surge events - a key parameter for ensuring compatibility with 3.3 V or 5 V logic interfaces in automotive and industrial systems. The SMB8J16CAHE3_B/I maintains this clamping performance across its full operating temperature range.
Is SMB8J16CAHE3_B/I suitable for automotive applications?
Yes, SMB8J16CAHE3_B/I is AEC-Q101 qualified and explicitly designated for automotive use, with ordering code suffix "HE3" indicating RoHS-compliant and AEC-Q101 qualified construction. It passes stress tests including high-temperature reverse bias (HTRB), high-temperature gate bias (HTGB), and temperature cycling - making it appropriate for engine control units, body electronics, and ADAS sensor modules. The SMB8J16CAHE3_B/I also meets MSL Level 1 for lead-free reflow, supporting modern automotive manufacturing processes.
What does the "_B/I" suffix mean in SMB8J16CAHE3_B/I?
The "_B/I" suffix in SMB8J16CAHE3_B/I indicates packaging configuration: "B" denotes tape-and-reel packaging per Vishay's internal revision coding, and "I" specifies a 13-inch diameter reel containing 3200 units. This format is optimized for high-volume SMT placement using standard pick-and-place equipment. The base part SMB8J16CAHE3 is unchanged electrically and mechanically - only the delivery method differs from the 7-inch reel variant (e.g., SMB8J16CAHE3_B/H). The SMB8J16CAHE3_B/I retains full AEC-Q101 qualification and all specified electrical parameters.
How does SMB8J16CAHE3_B/I differ from unidirectional variants like SMB10J16AHE3_B/I?
The SMB8J16CAHE3_B/I is bidirectional with symmetrical breakdown (VBR = 17.8–19.7 V in both directions), while SMB10J16AHE3_B/I is unidirectional and conducts only in reverse bias. The SMB8J16CAHE3_B/I provides protection against surges of either polarity without requiring polarity-aware layout, whereas the unidirectional version needs correct cathode orientation and offers higher PPPM (1000 W vs. 800 W). Both share the same SMB package and AEC-Q101 qualification, but SMB8J16CAHE3_B/I is preferred for AC-coupled or floating signal lines such as CAN bus or audio interfaces.
What is the maximum operating temperature for SMB8J16CAHE3_B/I?
The SMB8J16CAHE3_B/I has a maximum junction temperature (TJ max) of +150 °C and an operating junction/storage temperature range of –55 °C to +150 °C. This rating is validated per AEC-Q101 requirements and supports deployment in under-hood automotive environments and industrial enclosures with elevated ambient temperatures. Thermal performance depends on PCB layout - Vishay specifies RθJL = 20 °C/W and recommends mounting on 5.0 mm × 5.0 mm copper pads per terminal to maintain safe junction temperatures during 800 W surge events. The SMB8J16CAHE3_B/I sustains full electrical specifications across this entire temperature range.
SMB8J16CAHE3_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:
- 16V
- Current - Peak Pulse (10/1000µs):
- 30.8A
- Power - Peak Pulse:
- 800W
- 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)
SMB8J16CAHE3_B/I FAQ
1.How can I place an order for SMB8J16CAHE3_B/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB8J16CAHE3_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 SMB8J16CAHE3_B/I reliable?
The price and inventory of SMB8J16CAHE3_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 SMB8J16CAHE3_B/I is usually 5 days.
3.What payment methods are accepted for SMB8J16CAHE3_B/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB8J16CAHE3_B/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB8J16CAHE3_B/I?
SMB8J16CAHE3_B/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB8J16CAHE3_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 SMB8J16CAHE3_B/I?
For technical support, including SMB8J16CAHE3_B/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB8J16CAHE3_B/I requirements.
6.How does Aetrix verify that SMB8J16CAHE3_B/I is sourced from the original manufacturer or authorized distributors?
All SMB8J16CAHE3_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 SMB8J16CAHE3_B/I meets industry standards.
7.What is the process for return or replacement of SMB8J16CAHE3_B/I?
All SMB8J16CAHE3_B/I units undergo pre-shipment inspection (PSI). If there is an issue with SMB8J16CAHE3_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 SMB8J16CAHE3_B/I part is unused and in its original packaging.
Return procedure for SMB8J16CAHE3_B/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMB8J16CAHE3_B/I Tags
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