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Vishay General Semiconductor - Diodes Division SMB8J5.0CAHE3_A/H
- Part No.:
- SMB8J5.0CAHE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB8J5.0CAHE3_A/H.pdf
- Description:
- TVS DIODE 5VWM 9.2VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,859
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Product details
Overview
SMB8J5.0CAHE3_A/H 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 5.0 V stand-off voltage (VWM), 6.4–7.25 V breakdown voltage (VBR) at 10 mA, 800 W peak pulse power (PPPM), 2000 A peak pulse current (IPPM), and clamps transients to ≤9.2 V at rated surge. It is AEC-Q101 qualified and used in automotive sensor interfaces and industrial I/O protection.
For engineers reviewing the SMB8J5.0CAHE3_A/H datasheet, SMB8J5.0CAHE3_A/H pinout, SMB8J5.0CAHE3_A/H application, or SMB8J5.0CAHE3_A/H equivalent, key selection criteria include bidirectional clamping capability, 800 W 10/1000 µs surge rating, AEC-Q101 qualification, low clamping voltage (≤9.2 V), and SMB package compatibility with automated SMT assembly.
Technical Context
This device operates as a voltage-clamped surge protector using an avalanche junction structure. Its bidirectional symmetry enables suppression of both positive and negative transients without polarity sensitivity, and its glass-passivated chip ensures stable breakdown characteristics under repetitive stress.
Designed for use in parallel with protected circuits, it responds in <1 ps to fast-rising ESD or lightning-induced surges. Thermal resistance (RθJL = 20 °C/W) supports reliable energy dissipation when mounted on recommended 5.0 mm × 5.0 mm copper pads, and MSL Level 1 rating confirms suitability for standard reflow profiles up to 260 °C peak.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 5.0 V - Maximum continuous reverse operating voltage before significant leakage; defines safe DC/AC bias margin. |
| VBR (min/max) | 6.40 V / 7.25 V at IT = 10 mA - Confirmed breakdown range ensures consistent turn-on across production lots. |
| VC @ IPPM | ≤9.2 V at IPPM = 2000 A - Clamping voltage limits downstream IC stress during worst-case 10/1000 µs surge events. |
| PPPM | 800 W (10/1000 µs) - Sustains high-energy transients common in automotive load-dump and inductive switching environments. |
| IR @ VWM | ≤2000 µA - Low leakage preserves signal integrity and battery life in always-on sensor nodes. |
| TJ max | +150 °C - Enables operation in under-hood automotive locations and industrial enclosures with elevated ambient temperatures. |
| AEC-Q101 | Qualified - Validated for automotive electronics per stress test requirements including temperature cycling, HTRB, and ESD. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional - no polarity marking; symmetrical two-terminal construction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (1) | Surge current input/output node | Either terminal accepts transient energy; bidirectional conduction eliminates orientation constraints during placement. |
| Anode/Cathode (2) | Surge current return path | Completes low-inductance clamping loop to ground or rail; requires symmetric PCB layout for balanced impedance. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without external polarity management. |
| 800 W peak pulse power | Handles ISO 7637-2 Pulse 1/2a/5a and IEC 61000-4-5 Combination Wave surges in automotive ECUs. |
| AEC-Q101 qualification | Validates reliability for automotive applications including engine control, ADAS sensors, and body electronics. |
| MSL Level 1 | Supports standard Pb-free reflow without pre-baking, reducing manufacturing complexity and cost. |
| Glass-passivated junction | Ensures long-term parameter stability and resistance to humidity-induced degradation in harsh environments. |
Applications
| Automotive Sensor Protection | Industrial I/O Interface |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor outputs (e.g., pressure, temperature) from load-dump and jump-start transients in vehicle ECUs. IC Role / Device Role / Timing Role: Parallel-connected TVS providing low-impedance shunt path during overvoltage events; no timing function. Use Value: Limits voltage seen by downstream transceiver ICs to ≤9.2 V, preventing latch-up or permanent damage during 12 V system surges. | Use Scenario: Safeguarding PLC analog input modules and digital fieldbus ports against EFT and surge coupling from motor drives or solenoid actuation. IC Role / Device Role / Timing Role: Standby protection element placed at connector entry point; activates only during fault conditions. Use Value: Withstands 2000 A peak pulses while maintaining ≤9.2 V clamping, preserving ADC accuracy and microcontroller GPIO integrity. |
| Consumer Power Adapter Input | Telecom Line Card Surge Protection |
Use Scenario: Secondary-side surge suppression on 5 V USB-C PD adapter outputs exposed to user-handled cables and ESD events. IC Role / Device Role / Timing Role: Bidirectional clamp across VBUS/GND to absorb contact discharge and cable-induced transients. Use Value: 5.0 V VWM aligns with USB specification; ≤9.2 V VC prevents overvoltage on connected devices during 8 kV contact ESD. | Use Scenario: Front-end protection of Ethernet PHYs and DSL line drivers subjected to lightning-induced surges on outdoor-facing telecom lines. IC Role / Device Role / Timing Role: Primary-level TVS in series with gas discharge tube (GDT) for coordinated multi-stage protection. Use Value: Fast response (<1 ps) and 800 W rating enable effective energy diversion before GDT fires, reducing let-through voltage. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ5.0CA-E3/52 | Unqualified commercial grade; same VWM, VBR, VC, and PPPM but lacks AEC-Q101 validation. | Not suitable for automotive production; acceptable for industrial prototypes or non-safety-critical consumer designs. | Select when AEC-Q101 is not required and cost sensitivity outweighs qualification needs. |
| SMCJ5.0CAHE3_A/H | Same AEC-Q101 qualification and electrical specs, but in larger SMC (DO-214AB) package with higher 1500 W PPPM rating. | Used where higher surge margin is needed or board space allows larger footprint; thermal performance differs due to RθJA = 35 °C/W vs. 72 °C/W. | Choose when system-level surge testing exceeds 800 W or thermal design requires lower junction-to-ambient resistance. |
Compared with SMBJ5.0CA-E3/52, SMB8J5.0CAHE3_A/H adds automotive qualification without sacrificing clamping performance; compared with SMCJ5.0CAHE3_A/H, it trades 700 W peak power headroom for 30% smaller PCB area and tighter layout constraints.
Availability
SMB8J5.0CAHE3_A/H is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial I/O modules, consumer power adapters, and telecom line card protection requiring stable component supply and AEC-Q101 compliance.
Supply support for SMB8J5.0CAHE3_A/H 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 supplier of discrete semiconductors, specializing in diodes, rectifiers, MOSFETs, and protection devices with emphasis on reliability and automotive-grade validation.
The SMB8JxxCA family targets high-density, AEC-Q101-compliant transient suppression for space-constrained automotive and industrial electronics where bidirectional clamping and robust surge handling are essential.
FAQ
What is the clamping voltage of SMB8J5.0CAHE3_A/H at its rated peak pulse current?
The SMB8J5.0CAHE3_A/H has a maximum clamping voltage (VC) of 9.2 V when subjected to its rated peak pulse current (IPPM) of 2000 A under the standard 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and confirmed across production lots; it defines the upper voltage limit imposed on protected circuitry during surge events, ensuring compatibility with 5 V logic and interface ICs.
Is SMB8J5.0CAHE3_A/H suitable for automotive applications?
Yes, SMB8J5.0CAHE3_A/H is AEC-Q101 qualified, meaning it has passed stress tests including temperature cycling, high-temperature reverse bias (HTRB), and ESD per JESD22-A114. Its SMB package, 150 °C maximum junction temperature, and 800 W surge rating make it appropriate for engine control units, ADAS sensor modules, and body electronics where reliability under harsh conditions is mandatory.
How does the bidirectional configuration of SMB8J5.0CAHE3_A/H affect PCB layout?
The SMB8J5.0CAHE3_A/H has no polarity marking and identical electrical behavior at both terminals, enabling flexible placement on PCBs without orientation checks. Layout must maintain symmetrical trace lengths and equal copper pour areas on both sides to preserve balanced clamping impedance; asymmetry may cause uneven current sharing and localized heating during high-current surges.
What is the thermal resistance of SMB8J5.0CAHE3_A/H, and how does it impact derating?
SMB8J5.0CAHE3_A/H has a typical junction-to-lead thermal resistance (RθJL) of 20 °C/W and junction-to-ambient (RθJA) of 72 °C/W when mounted on 5.0 mm × 5.0 mm copper pads. At ambient temperatures above 25 °C, peak pulse power must be linearly derated per Figure 2 in Vishay document 88422; for example, at TA = 85 °C, usable PPPM drops to ~65% of 800 W.
Does SMB8J5.0CAHE3_A/H meet RoHS and halogen-free requirements?
SMB8J5.0CAHE3_A/H is RoHS-compliant and AEC-Q101 qualified, but it is not halogen-free; the HE3 suffix indicates RoHS compliance only. For halogen-free and AEC-Q101 compliance, the correct variant is SMB8J5.0CAHM3_A/H. Material categorization follows Vishay document 99912, and all lead finishes meet J-STD-002 solderability standards.
SMB8J5.0CAHE3_A/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 5V
- Voltage - Breakdown (Min):
- 6.4V
- Voltage - Clamping (Max) @ Ipp:
- 9.2V
- Current - Peak Pulse (10/1000µs):
- 87A
- 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)
SMB8J5.0CAHE3_A/H FAQ
1.How can I place an order for SMB8J5.0CAHE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB8J5.0CAHE3_A/H 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 SMB8J5.0CAHE3_A/H reliable?
The price and inventory of SMB8J5.0CAHE3_A/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMB8J5.0CAHE3_A/H is usually 5 days.
3.What payment methods are accepted for SMB8J5.0CAHE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB8J5.0CAHE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB8J5.0CAHE3_A/H?
SMB8J5.0CAHE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB8J5.0CAHE3_A/H 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 SMB8J5.0CAHE3_A/H?
For technical support, including SMB8J5.0CAHE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB8J5.0CAHE3_A/H requirements.
6.How does Aetrix verify that SMB8J5.0CAHE3_A/H is sourced from the original manufacturer or authorized distributors?
All SMB8J5.0CAHE3_A/H 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 SMB8J5.0CAHE3_A/H meets industry standards.
7.What is the process for return or replacement of SMB8J5.0CAHE3_A/H?
All SMB8J5.0CAHE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with SMB8J5.0CAHE3_A/H, 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 SMB8J5.0CAHE3_A/H part is unused and in its original packaging.
Return procedure for SMB8J5.0CAHE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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