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Vishay General Semiconductor - Diodes Division SMBJ9.0CAHE3/5B
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- Part No.:
- SMBJ9.0CAHE3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ9.0CAHE3/5B.pdf
- Description:
- TVS DIODE 9VWM 15.4VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:7,718
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Product details
Overview
SMBJ9.0CAHE3/5B 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 a 9.0 V stand-off voltage (VWM), 15.4 V maximum clamping voltage (VC) at 39.0 A peak pulse current (IPPM), and 600 W peak pulse power (10/1000 µs waveform), protecting sensitive ICs and MOSFETs in industrial sensor interfaces.
For engineers reviewing the SMBJ9.0CAHE3/5B datasheet, SMBJ9.0CAHE3/5B pinout, SMBJ9.0CAHE3/5B application, or SMBJ9.0CAHE3/5B equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification status, thermal resistance (RθJA = 100 °C/W), junction temperature range (–55 to +150 °C), and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
The SMBJ9.0CAHE3/5B operates as a bidirectional avalanche diode, symmetrically clamping both positive and negative transients above its breakdown voltage range (10.0–11.1 V at 1 mA test current). Its glass-passivated junction ensures stable leakage performance (<1.0 µA at VWM) and fast response time (<1.0 ps), critical for suppressing ESD and inductive switching spikes.
Thermally, it uses a low-profile SMB package with RθJL = 20 °C/W (junction-to-lead), enabling reliable operation under repetitive surge conditions (0.01% duty cycle) when mounted per recommended pad layout. The device meets MSL Level 1 (JEDEC J-STD-020) and supports lead-free reflow up to 260 °C peak.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 9.0 V - Maximum reverse stand-off voltage before clamping begins; defines safe operating margin below breakdown. |
| VBR (min/max) | 10.0 V / 11.1 V at IT = 1 mA - Confirmed bidirectional breakdown threshold; ensures symmetrical protection behavior. |
| VC @ IPPM | 15.4 V at 39.0 A - Clamped voltage during 600 W transient; limits stress on downstream components. |
| PPPM | 600 W (10/1000 µs waveform) - Peak surge power handling capacity; validated for lighting and inductive load switching. |
| IPPM | 39.0 A - Peak pulse current capability; determines minimum trace width and PCB copper area required. |
| TJ Range | –55 °C to +150 °C - Extended junction temperature range supports automotive under-hood and industrial environments. |
| Package | SMB (DO-214AA) - Surface-mount outline with 5.59 mm max length; compatible with standard SMT pick-and-place equipment. |
Pinout & Package
Package: SMB (DO-214AA), molded case with matte tin-plated leads, RoHS-compliant and AEC-Q101 qualified (HE3 suffix). No polarity marking for bidirectional configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bidirectional terminal pair | Either end connects to protected line; no cathode band marking; identical clamping in both directions. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power | Handles high-energy transients from relay coil collapse or lightning-induced surges without degradation. |
| AEC-Q101 qualified | Validated for automotive applications including engine control modules and body electronics requiring reliability certification. |
| MSL Level 1 moisture sensitivity | Enables direct use from reel without baking; supports high-volume manufacturing with zero floor-life constraints. |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients, improving protection margin for 3.3 V and 5 V logic interfaces. |
| Glass passivated junction | Ensures long-term stability of leakage current (<1.0 µA) and breakdown voltage across temperature and life cycles. |
Applications
| Industrial Sensor Interface | Automotive Body Control Module |
|---|---|
Use Scenario: Protecting analog output lines of pressure/temperature sensors exposed to motor drive noise and cable discharge events. IC Role / Device Role / Timing Role: Bidirectional clamping element placed directly at connector entry point to shunt transients before reaching ADC input or op-amp buffer. Use Value: Maintains signal integrity by limiting transient overvoltage to ≤15.4 V, preventing latch-up or damage to 12-bit SAR ADCs operating at 5 V supply. |
Use Scenario: Safeguarding LIN bus transceiver I/O pins against load dump and jump-start induced surges in door module ECUs. IC Role / Device Role / Timing Role: Primary TVS on LIN data line (pin 1) and VBAT-referenced supply rail (pin 2), configured in parallel with local decoupling. Use Value: Withstands 600 W pulses while maintaining <1.0 µA leakage at 9.0 V, ensuring no impact on LIN bus quiescent current budget. |
| Telecom Power Input Stage | Consumer USB-C Port Protection |
Use Scenario: Front-end protection for 12 V DC input of PoE-powered network switches subjected to AC mains coupling and field wiring faults. IC Role / Device Role / Timing Role: First-line transient suppressor upstream of DC-DC converter input, coordinated with fuse and common-mode choke. Use Value: Clamps 10/1000 µs surges to 15.4 V, allowing downstream overvoltage protection ICs to operate within safe SOA limits. |
Use Scenario: Bidirectional ESD and surge suppression on USB-C CC and VCONN lines in portable docking stations. IC Role / Device Role / Timing Role: Low-capacitance TVS placed adjacent to connector to meet IEC 61000-4-2 Level 4 (±15 kV air) without signal distortion. Use Value: Delivers sub-nanosecond response and <15.4 V clamping, preserving USB-C enumeration timing and preventing false disconnect detection. |
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-M3/5B | Halogen-free, RoHS-compliant, commercial-grade (non-AEC-Q101). | Lacks automotive qualification; suitable for consumer/industrial designs without automotive compliance requirements. | Select when AEC-Q101 is not mandated and halogen-free material content is prioritized. |
| SMCJ9.0CAHE3/5B | Same electrical specs but in larger SMC (DO-214AB) package; higher thermal mass (RθJA = 40 °C/W vs. 100 °C/W). | Better power derating at elevated ambient temperatures; requires more PCB area. | Choose for high-reliability industrial power supplies where sustained surge repetition occurs. |
Compared with SMBJ9.0CAHE3/5B, the M3/5B variant trades automotive qualification for halogen-free construction, while the SMCJ9.0CAHE3/5B offers superior thermal performance at the cost of footprint size-enabling design flexibility based on environmental compliance and thermal management priorities.
Availability
SMBJ9.0CAHE3/5B is available at Aetrix Electronics and suitable for industrial sensor interfaces, automotive body control modules, and telecom power input stages requiring stable component supply, AEC-Q101 validation, and consistent surge immunity performance.
Supply support for SMBJ9.0CAHE3/5B 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, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The SMBJ series is engineered for robust transient suppression in harsh electromagnetic environments, targeting automotive, industrial automation, and communications infrastructure where failure modes must be mitigated without compromising signal fidelity.
FAQ
What does the "CA" suffix indicate in SMBJ9.0CAHE3/5B?
The "CA" suffix denotes a bidirectional configuration, meaning SMBJ9.0CAHE3/5B provides symmetrical clamping for both positive and negative voltage transients. Unlike unidirectional variants (e.g., SMBJ9.0A), it has no cathode marking and functions identically regardless of polarity applied across its terminals-critical for AC-coupled or differential signal protection.
Is SMBJ9.0CAHE3/5B qualified for automotive use?
Yes, SMBJ9.0CAHE3/5B is AEC-Q101 qualified, as confirmed by the "HE3" suffix and Vishay documentation. This qualification validates its performance under extended temperature cycling, humidity bias, and mechanical shock tests required for automotive electronic control units, including body electronics and infotainment systems.
What is the maximum clamping voltage of SMBJ9.0CAHE3/5B under surge conditions?
The maximum clamping voltage (VC) of SMBJ9.0CAHE3/5B is 15.4 V at 39.0 A peak pulse current (IPPM) using the standard 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and defines the upper voltage limit imposed on protected circuitry during worst-case transient events.
How does the SMB package of SMBJ9.0CAHE3/5B affect thermal performance?
The SMB (DO-214AA) package of SMBJ9.0CAHE3/5B delivers RθJA = 100 °C/W under standard 0.2" × 0.2" copper pad conditions. This thermal resistance necessitates careful PCB layout-such as using thermal vias and enlarged copper pours-to maintain junction temperature below 150 °C during repetitive surge events.
Can SMBJ9.0CAHE3/5B replace unidirectional TVS diodes like SMBJ9.0A?
No-SMBJ9.0CAHE3/5B cannot directly replace unidirectional SMBJ9.0A because their conduction behavior differs fundamentally: SMBJ9.0A conducts only in reverse bias, while SMBJ9.0CAHE3/5B clamps in both directions. Substitution requires verifying that bidirectional clamping aligns with system-level signal polarity and grounding architecture.
SMBJ9.0CAHE3/5B 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):
- 9V
- Voltage - Breakdown (Min):
- 10V
- Voltage - Clamping (Max) @ Ipp:
- 15.4V
- Current - Peak Pulse (10/1000µs):
- 39A
- 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)
SMBJ9.0CAHE3/5B FAQ
1.How can I place an order for SMBJ9.0CAHE3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ9.0CAHE3/5B 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 SMBJ9.0CAHE3/5B reliable?
The price and inventory of SMBJ9.0CAHE3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ9.0CAHE3/5B is usually 5 days.
3.What payment methods are accepted for SMBJ9.0CAHE3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ9.0CAHE3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ9.0CAHE3/5B?
SMBJ9.0CAHE3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ9.0CAHE3/5B 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 SMBJ9.0CAHE3/5B?
For technical support, including SMBJ9.0CAHE3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ9.0CAHE3/5B requirements.
6.How does Aetrix verify that SMBJ9.0CAHE3/5B is sourced from the original manufacturer or authorized distributors?
All SMBJ9.0CAHE3/5B 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 SMBJ9.0CAHE3/5B meets industry standards.
7.What is the process for return or replacement of SMBJ9.0CAHE3/5B?
All SMBJ9.0CAHE3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ9.0CAHE3/5B, 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 SMBJ9.0CAHE3/5B part is unused and in its original packaging.
Return procedure for SMBJ9.0CAHE3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ9.0CAHE3/5B Tags
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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