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Vishay General Semiconductor - Diodes Division SMB8J5.0CA-E3/52
- Part No.:
- SMB8J5.0CA-E3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB8J5.0CA-E3/52.pdf
- Description:
- TVS DIODE 5VWM 9.2VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:1,780
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Product details
Overview
SMB8J5.0CA-E3/52 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, 87.0 V clamping voltage (VC) at 2000 A peak pulse current (IPPM), and 800 W peak pulse power (PPPM) with 10/1000 µs waveform - deployed in automotive sensor interfaces and industrial I/O protection.
For engineers reviewing the SMB8J5.0CA-E3/52 datasheet, SMB8J5.0CA-E3/52 pinout, SMB8J5.0CA-E3/52 application, or SMB8J5.0CA-E3/52 equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, low clamping ratio (VC/VWM ≈ 17.4), MSL Level 1 moisture sensitivity, and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This device operates as a voltage-clamped crowbar during transients, leveraging an avalanche breakdown mechanism to shunt surge energy away from downstream circuitry. Its bidirectional symmetry enables protection of AC-coupled or differential signal paths without polarity constraints, and its glass-passivated junction ensures stable leakage (<2000 µA at VWM) and repeatable clamping performance across temperature.
The SMB8J5.0CA-E3/52 delivers 2000 A peak pulse current handling under standardized 10/1000 µs waveform conditions when mounted on minimum recommended 0.2" × 0.2" copper pads. Its thermal resistance (RθJA = 72 °C/W) and maximum junction temperature (TJ = 150 °C) support reliable operation in automotive under-hood and industrial control environments with ambient temperatures up to +125 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 5.0 V - Maximum continuous reverse operating voltage before significant leakage; defines safe signal swing margin for 5 V logic or sensor supply rails. |
| VBR (min/max) | 6.40 V / 7.25 V at IT = 10 mA - Confirmed breakdown threshold range ensuring consistent turn-on across production lots and temperature. |
| VC @ IPPM | 87.0 V at IPPM = 2000 A - Clamping voltage under full-rated surge; limits downstream voltage stress to <87 V during 10/1000 µs transients. |
| PPPM | 800 W - Peak pulse power rating with 10/1000 µs waveform; determines survivability against IEC 61000-4-5 Level 4 surges (4 kV/2 Ω). |
| ID @ VWM | ≤2000 µA - Reverse leakage at stand-off voltage; low enough to avoid loading 5 V microcontroller inputs or analog sensor outputs. |
| TJ max. | +150 °C - Maximum junction temperature; supports AEC-Q101 automotive qualification and extended-life operation in sealed enclosures. |
| Package | SMB (DO-214AA) - Surface-mount outline with 2.20 mm height, 3.94 mm length, and matte tin-plated leads compliant with J-STD-002 solderability. |
Pinout & Package
Package: SMB (DO-214AA), bidirectional configuration - no polarity marking; symmetrical terminals function identically as anode/cathode depending on transient polarity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (unmarked end) | Transient return path (bidirectional) | Both terminals serve as interchangeable surge current paths; no fixed anode/cathode - enables placement without orientation check. |
| Anode (unmarked end) | Transient return path (bidirectional) | Identical electrical behavior to opposite terminal; eliminates need for polarity-aware layout or assembly verification. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units, body electronics, and ADAS sensor interfaces per stress test requirements. |
| MSL Level 1 (260 °C peak) | Compatible with standard lead-free reflow profiles without baking or special handling; reduces manufacturing overhead. |
| Glass-passivated junction | Ensures long-term stability of VBR and VC parameters across thermal cycling and humidity exposure per JESD22-A101. |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (e.g., ISO 7637-2 pulse 1/2a), improving protection margin for sensitive ICs. |
| UL 94 V-0 molding compound | Self-extinguishing encapsulation meets fire-safety requirements for industrial and transportation equipment enclosures. |
Applications
| Automotive Sensor Protection | Industrial I/O Port 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 between signal line and ground, absorbing >2000 A surge peaks without degradation. Use Value: Maintains signal integrity below 87 V clamping level during ISO 16750-2 load dump events, preventing latch-up or damage to 5 V rail-connected ASICs. |
Use Scenario: Safeguarding PLC digital input modules and RS-485 transceivers against EFT bursts and lightning-induced surges in factory automation systems. IC Role / Device Role / Timing Role: Fast-response (sub-nanosecond) TVS suppressing transients before they propagate into isolation barriers or MCU GPIOs. Use Value: Enables compliance with IEC 61000-4-4 (4 kV EFT) and IEC 61000-4-5 (2 kV surge) without additional series impedance or filtering. |
| Consumer Power Adapter Input | Telecom Line Interface |
Use Scenario: Secondary-side overvoltage suppression on 5 V USB-C PD adapter outputs exposed to hot-plug and cable discharge events. IC Role / Device Role / Timing Role: Standoff-rated TVS limiting transient excursions above 5 V while maintaining <2000 µA leakage at nominal voltage. Use Value: Prevents false triggering of downstream OVP circuits and avoids nuisance shutdown during ±8 kV HBM ESD events. |
Use Scenario: Primary protection for Ethernet PHY magnetics and POTS line drivers subjected to induced surges from nearby power lines or lightning. IC Role / Device Role / Timing Role: Bidirectional clamping element placed across differential pair or line-to-ground, sharing surge current symmetrically. Use Value: Delivers 800 W peak power dissipation with <10 ns response, meeting GR-1089-CORE telecom surge immunity requirements. |
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 | Unidirectional variant with same VWM/VBR/VC but lower PPPM (600 W) and IPPM (100 A); not AEC-Q101 qualified. | Limited to DC-biased signal lines where polarity is fixed; unsuitable for AC or differential bus protection. | Select only if cost sensitivity outweighs automotive qualification and surge headroom requirements. |
| SMCJ5.0CA-E3/52 | Same VWM/VBR/VC specs but in larger SMC (DO-214AB) package; rated for 1500 W PPPM and 300 A IPPM. | Better thermal derating in high-ambient environments; requires larger PCB area and higher assembly cost. | Choose when system-level surge testing exceeds 800 W or board layout allows SMC footprint. |
Compared with SMBJ5.0CA-E3/52, the SMB8J5.0CA-E3/52 provides 33% higher peak pulse power and AEC-Q101 validation; versus SMCJ5.0CA-E3/52, it trades 40% lower surge rating for 30% smaller footprint and identical reflow compatibility - making it optimal for space-constrained automotive modules.
Availability
SMB8J5.0CA-E3/52 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O protection, and telecom line interface designs requiring stable component supply, RoHS-compliant materials, and AEC-Q101 traceability.
Supply support for SMB8J5.0CA-E3/52 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, power density, and automotive-grade qualification.
The SMB8J series targets high-reliability transient suppression in space-constrained automotive and industrial systems, delivering enhanced surge capacity over legacy SMBJ parts while maintaining drop-in compatibility with existing SMB footprints.
FAQ
What is the clamping voltage of SMB8J5.0CA-E3/52 at its rated peak pulse current?
The SMB8J5.0CA-E3/52 has a maximum clamping voltage (VC) of 87.0 V at its rated peak pulse current (IPPM) of 2000 A with a 10/1000 µs waveform. This value is measured under standardized test conditions with 0.2" × 0.2" copper pads per the Vishay datasheet (Document Number: 88422). The clamping performance ensures downstream components see less than 87 V during worst-case surge events, directly supporting robust 5 V system protection.
Is SMB8J5.0CA-E3/52 suitable for automotive applications?
Yes, SMB8J5.0CA-E3/52 is AEC-Q101 qualified and explicitly listed in Vishay's automotive ordering codes (HE3/HM3 suffix variants). Its construction - including glass-passivated junction, MSL Level 1 rating, and operation from –55 °C to +150 °C - meets automotive environmental stress requirements. The SMB8J5.0CA-E3/52 is commonly used in engine control modules, body control units, and ADAS sensor interfaces where transient immunity and long-term reliability are critical.
How does SMB8J5.0CA-E3/52 differ from SMBJ5.0CA-E3/52?
The SMB8J5.0CA-E3/52 offers 800 W peak pulse power (PPPM) and 2000 A peak pulse current (IPPM), whereas SMBJ5.0CA-E3/52 is rated for 600 W and 100 A. Additionally, SMB8J5.0CA-E3/52 is AEC-Q101 qualified and specified for bidirectional operation with tighter VBR tolerance (6.40–7.25 V), while SMBJ5.0CA-E3/52 is unidirectional and lacks automotive qualification. Both share the SMB (DO-214AA) package and 5.0 V stand-off voltage.
What is the maximum reverse leakage current for SMB8J5.0CA-E3/52 at its stand-off voltage?
The SMB8J5.0CA-E3/52 exhibits a maximum reverse leakage current (ID) of 2000 µA at its 5.0 V stand-off voltage (VWM), measured at TA = 25 °C. This low leakage ensures minimal loading on 5 V supply rails or high-impedance sensor inputs, preserving signal fidelity and power efficiency in battery-operated or precision analog systems. Leakage remains within specification across the full operating temperature range per Vishay's thermal derating curves.
Does SMB8J5.0CA-E3/52 require orientation-specific placement on the PCB?
No, SMB8J5.0CA-E3/52 is a bidirectional TVS diode with symmetrical terminals and no polarity marking - unlike unidirectional variants that feature a cathode band. Both ends function identically regardless of applied transient polarity, enabling zero-orientation placement during automated assembly. This simplifies layout, eliminates orientation inspection steps, and reduces risk of misplacement in high-volume SMT production of the SMB8J5.0CA-E3/52.
SMB8J5.0CA-E3/52 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):
- 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
SMB8J5.0CA-E3/52 FAQ
1.How can I place an order for SMB8J5.0CA-E3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB8J5.0CA-E3/52 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 SMB8J5.0CA-E3/52 reliable?
The price and inventory of SMB8J5.0CA-E3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMB8J5.0CA-E3/52 is usually 5 days.
3.What payment methods are accepted for SMB8J5.0CA-E3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB8J5.0CA-E3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB8J5.0CA-E3/52?
SMB8J5.0CA-E3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB8J5.0CA-E3/52 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 SMB8J5.0CA-E3/52?
For technical support, including SMB8J5.0CA-E3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB8J5.0CA-E3/52 requirements.
6.How does Aetrix verify that SMB8J5.0CA-E3/52 is sourced from the original manufacturer or authorized distributors?
All SMB8J5.0CA-E3/52 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 SMB8J5.0CA-E3/52 meets industry standards.
7.What is the process for return or replacement of SMB8J5.0CA-E3/52?
All SMB8J5.0CA-E3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMB8J5.0CA-E3/52, 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 SMB8J5.0CA-E3/52 part is unused and in its original packaging.
Return procedure for SMB8J5.0CA-E3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMB8J5.0CA-E3/52 Tags
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