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Vishay General Semiconductor - Diodes Division SMB8J9.0CA-E3/52
- Part No.:
- SMB8J9.0CA-E3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB8J9.0CA-E3/52.pdf
- Description:
- TVS DIODE 9VWM 15.4VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:9,575
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Product details
Overview
SMB8J9.0CA-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 9.0 V stand-off voltage (VWM), 15.4 V maximum clamping voltage (VC) at 20 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 SMB8J9.0CA-E3/52 datasheet, SMB8J9.0CA-E3/52 pinout, SMB8J9.0CA-E3/52 application, or SMB8J9.0CA-E3/52 equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, low leakage (<1.0 μA at VWM), thermal resistance (RθJA = 72 °C/W), and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This device operates as a voltage-clamped shunt protector, responding within picoseconds to transients exceeding its breakdown threshold (VBR min = 10.0 V, max = 11.1 V at 1.0 mA). Its glass-passivated junction ensures stable avalanche behavior under repetitive surges, while the bidirectional symmetry enables protection of AC-coupled or differential signal paths without polarity constraints.
Designed per ANSI/IEEE C62.35 standards, SMB8J9.0CA-E3/52 delivers consistent clamping performance across -55 °C to +150 °C operating junction temperature, with derating applied above 25 °C ambient per Fig. 2. The MSL Level 1 rating and matte tin-plated leads support lead-free reflow up to 260 °C peak.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 9.0 V - maximum continuous reverse voltage before significant leakage; defines safe operating margin below clamping onset |
| VBR (min/max) | 10.0 / 11.1 V at 1.0 mA - precise avalanche initiation range ensuring predictable turn-on during overvoltage events |
| VC @ IPPM | 15.4 V at 20 A - clamping voltage under 10/1000 μs surge; limits downstream IC stress to safe levels |
| PPPM | 800 W - peak transient energy absorption capacity; supports robust protection in automotive load-dump scenarios |
| ID @ VWM | <1.0 μA - ultra-low reverse leakage preserves signal integrity and minimizes standby power loss |
| TJ max. | +150 °C - extended junction temperature rating enables use in under-hood automotive environments |
| RθJA | 72 °C/W - thermal resistance determines required PCB copper area for sustained surge duty cycles |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional configuration with no polarity marking; case dimensions 4.57 mm × 3.94 mm × 2.20 mm (L × W × H); meets UL 94 V-0 flammability rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bidirectional avalanche junction terminals | No functional distinction between ends; either terminal serves as cathode or anode depending on transient polarity |
| Case (body) | Non-electrical mechanical interface | Thermally conductive plastic molding; requires minimum 5.0 mm × 5.0 mm copper pad per terminal for rated PPPM |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units and ADAS sensor interfaces |
| Glass-passivated junction | Ensures stable, repeatable avalanche characteristics and long-term reliability under thermal cycling |
| MSL Level 1, 260 °C peak | Compatible with standard lead-free reflow profiles without preconditioning or special handling |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (e.g., ISO 7637-2 Pulse 1/2a/5a) |
| RoHS-compliant, halogen-free option available | E3 suffix indicates commercial-grade RoHS compliance; HM3 variant adds halogen-free construction |
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: Bidirectional shunt clamp placed directly at connector or IC input pins to divert surge current away from sensitive circuitry. Use Value: Clamps transients to ≤15.4 V while sustaining 800 W peak power, meeting ISO 16750-2 and ISO 7637-2 requirements without derating. | Use Scenario: Safeguarding digital and analog I/O channels of programmable logic controllers against ESD and lightning-induced surges in factory automation systems. IC Role / Device Role: Primary front-end TVS on field-side signal lines, mounted adjacent to connectors with 5.0 mm × 5.0 mm thermal pads. Use Value: Delivers <1.0 μA leakage at 9.0 V VWM to avoid signal distortion, while maintaining 150 °C TJ max for operation in uncooled control cabinets. |
| Telecom Line Interface | Consumer Device USB/DisplayPort Protection |
Use Scenario: Shielding RS-485/RS-232 transceivers and Ethernet PHYs from induced surges on outdoor telecom line cards. IC Role / Device Role: Secondary-level protection stage after gas discharge tube (GDT), providing low-clamp precision for IC-level safeguarding. Use Value: 15.4 V VC ensures downstream transceiver inputs remain within absolute maximum ratings during 10/1000 μs surges up to 20 A. | Use Scenario: Adding robust ESD and surge immunity to USB 2.0 data lines and DisplayPort AUX channels in laptops and docking stations. IC Role / Device Role: Low-capacitance bidirectional clamp placed inline with differential pairs to preserve signal integrity. Use Value: Symmetrical structure eliminates polarity concerns during board layout; 72 °C/W RθJA allows thermal management via standard PCB copper without heatsinks. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ9.0CA-E3/52 | Unidirectional variant with same VWM/VBR/VC but asymmetric conduction; lacks reverse conduction path | Requires explicit polarity alignment; unsuitable for AC or floating differential lines | Select only when circuit topology enforces fixed polarity and lower cost is prioritized over design flexibility |
| SMCJ9.0CA-E3/52 | Same electrical specs but in larger SMC (DO-214AB) package; higher PPPM (1500 W) and lower RθJA (40 °C/W) | Occupies ~2.5× PCB area; suited for higher-energy industrial surge environments | Choose when system-level surge testing exceeds 800 W or thermal constraints demand lower junction rise |
Compared with SMBJ9.0CA-E3/52 and SMCJ9.0CA-E3/52, SMB8J9.0CA-E3/52 uniquely balances AEC-Q101 qualification, compact SMB footprint, and bidirectional symmetry - making it optimal for space-constrained automotive and industrial signal-line protection where polarity-agnostic clamping is essential.
Availability
SMB8J9.0CA-E3/52 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, and telecom line card designs requiring stable component supply, AEC-Q101 compliance, and high-reliability transient suppression.
Supply support for SMB8J9.0CA-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, efficiency, and application-specific optimization.
The SMB8J series belongs to Vishay's TRANSZORB® TVS portfolio, engineered specifically for high-power-density, surface-mount surge protection in automotive, industrial, and communications systems where rapid response and repeatable clamping are critical.
FAQ
What is the breakdown voltage range of SMB8J9.0CA-E3/52?
The SMB8J9.0CA-E3/52 has a guaranteed breakdown voltage (VBR) range of 10.0 V to 11.1 V at 1.0 mA test current, measured per ANSI/IEEE C62.35 standards. This tight tolerance ensures consistent turn-on behavior across production lots and supports reliable design margining against system-level transients. The value is confirmed in Vishay Document Number 88422, Table "BIDIRECTIONAL" on page 3.
Is SMB8J9.0CA-E3/52 qualified for automotive use?
Yes, SMB8J9.0CA-E3/52 is AEC-Q101 qualified, as explicitly stated in the Vishay datasheet (Document Number 88422, page 1, FEATURES section). The "HE3" and "HM3" automotive ordering codes derive from this base part, and the E3 suffix denotes RoHS-compliant commercial grade with full AEC-Q101 validation - enabling use in engine control, body electronics, and ADAS sensor modules.
What is the maximum clamping voltage of SMB8J9.0CA-E3/52 under surge conditions?
The SMB8J9.0CA-E3/52 exhibits a maximum clamping voltage (VC) of 15.4 V when subjected to a 10/1000 μs waveform peak pulse current of 20 A. This value is specified in the "BIDIRECTIONAL" electrical characteristics table (page 3 of Document 88422) and defines the upper voltage limit imposed on protected circuitry during worst-case transient events.
Does SMB8J9.0CA-E3/52 have polarity markings on the package?
No, SMB8J9.0CA-E3/52 does not feature polarity markings because it is a bidirectional TVS diode. As confirmed in the "MECHANICAL DATA" section (page 1), "no marking on bidirectional types" - both terminals are functionally identical, allowing unrestricted orientation during automated placement and eliminating risk of reverse installation.
What is the thermal resistance junction-to-ambient for SMB8J9.0CA-E3/52?
The typical thermal resistance junction-to-ambient (RθJA) for SMB8J9.0CA-E3/52 is 72 °C/W, measured under standard conditions with 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal (Document 88422, page 4, THERMAL CHARACTERISTICS). This value guides PCB layout decisions for thermal management during repetitive surge events.
SMB8J9.0CA-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):
- 9V
- Voltage - Breakdown (Min):
- 10V
- Voltage - Clamping (Max) @ Ipp:
- 15.4V
- Current - Peak Pulse (10/1000µs):
- 51.9A
- 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)
SMB8J9.0CA-E3/52 FAQ
1.How can I place an order for SMB8J9.0CA-E3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB8J9.0CA-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 SMB8J9.0CA-E3/52 reliable?
The price and inventory of SMB8J9.0CA-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 SMB8J9.0CA-E3/52 is usually 5 days.
3.What payment methods are accepted for SMB8J9.0CA-E3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB8J9.0CA-E3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB8J9.0CA-E3/52?
SMB8J9.0CA-E3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB8J9.0CA-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 SMB8J9.0CA-E3/52?
For technical support, including SMB8J9.0CA-E3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB8J9.0CA-E3/52 requirements.
6.How does Aetrix verify that SMB8J9.0CA-E3/52 is sourced from the original manufacturer or authorized distributors?
All SMB8J9.0CA-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 SMB8J9.0CA-E3/52 meets industry standards.
7.What is the process for return or replacement of SMB8J9.0CA-E3/52?
All SMB8J9.0CA-E3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMB8J9.0CA-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 SMB8J9.0CA-E3/52 part is unused and in its original packaging.
Return procedure for SMB8J9.0CA-E3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMB8J9.0CA-E3/52 Tags
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