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Vishay General Semiconductor - Diodes Division SMBJ5.0CAHE3/5B
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- Part No.:
- SMBJ5.0CAHE3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ5.0CAHE3/5B.pdf
- Description:
- TVS DIODE 5VWM 9.2VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,202
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Product details
Overview
SMBJ5.0CAHE3/5B from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping voltage transients on signal or power lines. It features 5.0 V stand-off voltage (VWM), 6.4–7.25 V breakdown range (VBR), 600 W peak pulse power (10/1000 µs), and AEC-Q101 qualification - used to protect MOSFETs, sensor interfaces, and IC power rails in automotive and industrial control systems.
For engineers reviewing the SMBJ5.0CAHE3/5B datasheet, SMBJ5.0CAHE3/5B pinout, SMBJ5.0CAHE3/5B application, or SMBJ5.0CAHE3/5B equivalent, key selection criteria include bidirectional clamping capability, low clamping voltage (VC = 9.2 V at IPPM), AEC-Q101 qualification status, and compatibility with automated SMT placement on PCBs with 5.0 mm × 5.0 mm copper pads per terminal.
Technical Context
This TVS diode operates symmetrically in both directions due to its bidirectional construction, enabling protection of AC-coupled or differential signal lines without polarity concerns. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<800 µA at VWM), while the 10/1000 µs waveform rating reflects real-world surge immunity against inductive switching and ESD events.
The device's thermal resistance (RθJA = 100 °C/W) and maximum junction temperature (TJ = 150 °C) support operation in compact, unheatsinked layouts typical of automotive ECUs and industrial I/O modules. Its MSL Level 1 rating and matte tin-plated leads comply with J-STD-002 solderability and JESD201 Class 2 whisker resistance requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 5.0 V - Maximum continuous reverse operating voltage before clamping begins; defines safe operating margin below circuit supply or signal swing. |
| VBR min/max | 6.4 V / 7.25 V - Breakdown occurs within this range at 10 mA test current; ensures predictable turn-on during overvoltage events. |
| VC @ IPPM | 9.2 V - Clamping voltage measured at peak pulse current (65.2 A); limits transient energy delivered to protected downstream components. |
| PPPM | 600 W - Peak pulse power handling with 10/1000 µs waveform; supports robust protection against lightning-induced surges and load dump. |
| ID @ VWM | 800 µA - Maximum reverse leakage at stand-off voltage; low enough to avoid interference in high-impedance sensor or communication lines. |
| TJ max. | 150 °C - Maximum junction temperature; enables use in under-hood automotive environments and sealed industrial enclosures. |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per AEC standard. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional configuration with no polarity marking. Dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H), with 5.0 mm × 5.0 mm recommended copper pad area per terminal for thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (bidirectional) | One terminal of symmetrical PN junction; accepts surge current from either direction during clamping. |
| Cathode | Transient current entry (bidirectional) | Second terminal of symmetrical PN junction; completes low-impedance path to ground or rail during overvoltage event. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables protection of AC signals, differential buses (e.g., RS-485), and floating power domains without external polarity management. |
| 600 W peak pulse power | Withstands 10/1000 µs surges up to 65.2 A - sufficient for ISO 7637-2 Pulse 1/2a/5a and IEC 61000-4-5 Level 3 compliance when properly laid out. |
| AEC-Q101 qualification | Validated for automotive applications including engine control, body electronics, and ADAS sensors requiring extended temperature and lifetime reliability. |
| MSL Level 1, 260 °C reflow | Compatible with standard lead-free SMT reflow profiles without moisture sensitivity concerns or baking requirements. |
| Glass passivated junction | Ensures stable VBR over time and temperature, low leakage drift, and resistance to humidity-induced degradation in harsh environments. |
Applications
| Automotive Sensor Protection | Industrial I/O Interface |
|---|---|
Use Scenario: Protecting analog output lines of pressure or temperature sensors in engine control units exposed to load dump and alternator ripple. IC Role / Device Role / Timing Role: Bidirectional TVS clamping element placed between sensor output and microcontroller ADC input. Use Value: Limits transient voltage to ≤9.2 V during 65.2 A surges, preventing ADC saturation and latch-up in downstream MCU. |
Use Scenario: Shielding 24 V digital input channels on PLC modules from inductive kickback caused by solenoid or relay switching. IC Role / Device Role / Timing Role: Standoff protector across input terminals, shunting surge energy to common ground before reaching optocoupler input stage. Use Value: Maintains 5.0 V stand-off while clamping to 9.2 V, preserving noise margin and enabling reliable detection of valid logic states. |
| USB Port ESD Protection | RS-485 Transceiver Line Guard |
Use Scenario: Secondary-level ESD protection on VBUS and D+/D− lines of automotive USB host ports subjected to ±15 kV contact discharge. IC Role / Device Role / Timing Role: Fast-response clamping device placed after primary polymer-based TVS, absorbing residual energy post-trigger. Use Value: Sub-10 ns response time and 9.2 V clamping prevent damage to USB PHY transceivers during multi-pulse ESD events. |
Use Scenario: Protecting half-duplex RS-485 bus lines (A/B) in factory automation networks from induced lightning surges and ground potential differences. IC Role / Device Role / Timing Role: Symmetrical bidirectional suppressor connected between A and B lines and local ground reference. Use Value: 6.4–7.25 V VBR ensures conduction before transceiver damage threshold (~12 V), limiting differential stress to safe levels. |
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-M3/5B | Halogen-free, RoHS-compliant variant; identical electrical specs and AEC-Q101 qualification. | No functional difference; selected where halogen-free materials are mandated by OEM environmental policy. | Choose SMBJ5.0CA-M3/5B when compliance with IEC 61249-2-21 or IPC-4101D halogen restrictions is required. |
| SMAJ5.0CAHE3/A | Lower PPPM (400 W), smaller SMA package (DO-214AC), higher RθJA (150 °C/W), same VWM/VBR/VC. | Not suitable for high-energy surges; limited to lower-duty-cycle or space-constrained consumer applications. | Select SMAJ5.0CAHE3/A only if board space is critical and surge threat level is ≤400 W (e.g., non-automotive USB peripherals). |
Compared with SMBJ5.0CAHE3/5B, the M3 variant offers identical protection performance with halogen-free construction, while the SMAJ5.0CAHE3/A trades 33 % lower surge capacity and reduced thermal robustness for 30 % smaller footprint - making SMBJ5.0CAHE3/5B the preferred choice for automotive and industrial designs demanding full 600 W immunity and AEC-Q101 validation.
Availability
SMBJ5.0CAHE3/5B is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC inputs, USB power delivery circuits, and RS-485 communication interfaces requiring stable component supply and long-term lifecycle assurance.
Supply support for SMBJ5.0CAHE3/5B 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 high-energy transient suppression in automotive, industrial, and telecom infrastructure - delivering consistent clamping performance, AEC-Q101 validation, and robust SMT manufacturability in the SMB package.
FAQ
What is the clamping voltage of SMBJ5.0CAHE3/5B at its rated peak pulse current?
The SMBJ5.0CAHE3/5B has a maximum clamping voltage (VC) of 9.2 V when subjected to its peak pulse current (IPPM) of 65.2 A under the standard 10/1000 µs waveform. This value is measured per JEDEC test conditions and ensures downstream components see no more than 9.2 V during surge events, directly supporting design margin calculations for protected ICs and transceivers.
Is SMBJ5.0CAHE3/5B suitable for automotive applications?
Yes, SMBJ5.0CAHE3/5B is AEC-Q101 qualified and explicitly rated for automotive use. Its construction includes glass-passivated junctions, MSL Level 1 reflow compatibility, and validated performance across –55 °C to +150 °C junction temperature range - meeting requirements for engine control, body electronics, and ADAS sensor protection where reliability under thermal and electrical stress is critical.
How does the bidirectional configuration of SMBJ5.0CAHE3/5B affect its circuit placement?
The SMBJ5.0CAHE3/5B has no polarity marking and functions identically in both directions, allowing placement across any two nodes requiring symmetrical overvoltage protection - such as differential signal pairs (RS-485 A/B), AC-coupled lines, or floating power domains. Unlike unidirectional variants, it eliminates orientation errors during automated assembly and avoids the need for dual-diode configurations.
What is the maximum reverse leakage current for SMBJ5.0CAHE3/5B at its stand-off voltage?
At its 5.0 V stand-off voltage (VWM), the SMBJ5.0CAHE3/5B exhibits a maximum reverse leakage current (ID) of 800 µA at 25 °C. This low leakage preserves signal integrity in high-impedance sensor interfaces and ensures minimal power loss in always-on automotive modules, aligning with design targets for battery-sensitive applications.
Does SMBJ5.0CAHE3/5B require heatsinking in typical PCB layouts?
No dedicated heatsink is required for SMBJ5.0CAHE3/5B under normal surge duty cycles. When mounted on the recommended 5.0 mm × 5.0 mm copper pads per terminal, its thermal resistance (RθJA = 100 °C/W) ensures junction temperature remains within the 150 °C limit even during repetitive 600 W pulses at 0.01 % duty cycle - making it suitable for compact, double-sided PCBs in automotive and industrial modules.
SMBJ5.0CAHE3/5B 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):
- 5V
- Voltage - Breakdown (Min):
- 6.4V
- Voltage - Clamping (Max) @ Ipp:
- 9.2V
- Current - Peak Pulse (10/1000µs):
- 65.2A
- 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)
SMBJ5.0CAHE3/5B FAQ
1.How can I place an order for SMBJ5.0CAHE3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ5.0CAHE3/5B 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 SMBJ5.0CAHE3/5B reliable?
The price and inventory of SMBJ5.0CAHE3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ5.0CAHE3/5B is usually 5 days.
3.What payment methods are accepted for SMBJ5.0CAHE3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ5.0CAHE3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ5.0CAHE3/5B?
SMBJ5.0CAHE3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ5.0CAHE3/5B 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 SMBJ5.0CAHE3/5B?
For technical support, including SMBJ5.0CAHE3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ5.0CAHE3/5B requirements.
6.How does Aetrix verify that SMBJ5.0CAHE3/5B is sourced from the original manufacturer or authorized distributors?
All SMBJ5.0CAHE3/5B 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 SMBJ5.0CAHE3/5B meets industry standards.
7.What is the process for return or replacement of SMBJ5.0CAHE3/5B?
All SMBJ5.0CAHE3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ5.0CAHE3/5B, 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 SMBJ5.0CAHE3/5B part is unused and in its original packaging.
Return procedure for SMBJ5.0CAHE3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ5.0CAHE3/5B Tags
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