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Vishay General Semiconductor - Diodes Division SMBJ9.0CHE3/52
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- Part No.:
- SMBJ9.0CHE3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ9.0CHE3/52.pdf
- Description:
- TVS DIODE 9VWM 16.9VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,616
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Product details
Overview
SMBJ9.0CHE3/52 from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in the SMB (DO-214AA) package, designed to protect sensitive electronics against ESD, lightning-induced surges, and inductive switching transients. It features a 9.0 V stand-off voltage (VWM), 10.0–11.1 V breakdown voltage (VBR) at 1 mA, 15.4 V maximum clamping voltage (VC) at 39.0 A peak pulse current, and 600 W peak pulse power rating with 10/1000 µs waveform.
For engineers reviewing the SMBJ9.0CHE3/52 datasheet, SMBJ9.0CHE3/52 pinout, SMBJ9.0CHE3/52 application, or SMBJ9.0CHE3/52 equivalent, key selection considerations include its AEC-Q101 qualification, RoHS-compliant matte tin-plated leads, MSL Level 1 moisture sensitivity, and suitability for automotive-grade power rail and signal line protection where fast response (<1 ps), low clamping ratio (VC/VBR ≈ 1.45), and stable thermal resistance (RθJA = 100 °C/W) are critical.
Technical Context
This TVS diode operates as a unidirectional clamping device with cathode-band polarity marking, leveraging a glass-passivated silicon junction for robust surge handling and low incremental surge resistance. Its 10/1000 µs waveform rating reflects standardized IEC 61000-4-5 surge immunity testing conditions, and it complies with ANSI/IEEE C62.35 definitions for transient suppressors.
The SMBJ9.0CHE3/52 is rated for continuous operation from –55 °C to +150 °C junction temperature, with derating above 25 °C per Figure 2 of the datasheet. Its 1.0 µA max reverse leakage at VWM ensures minimal standby power loss in low-current sensor or microcontroller I/O protection circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 9.0 V - Maximum DC or continuous reverse operating voltage before significant conduction begins; sets safe margin below system supply rails (e.g., 9 V battery or 12 V automotive systems). |
| VBR (Breakdown Voltage) | 10.0–11.1 V at 1.0 mA - Voltage at which device enters avalanche conduction; defines precise turn-on threshold for transient clamping. |
| VC (Clamping Voltage) | 15.4 V at 39.0 A (10/1000 µs) - Maximum voltage seen by protected circuit during worst-case surge; enables reliable protection of 12 V logic or analog ICs. |
| PPPM (Peak Pulse Power) | 600 W - Sustained energy absorption capability under standardized surge waveform; supports repeated transient events at 0.01% duty cycle. |
| RθJA (Junction-to-Ambient) | 100 °C/W - Thermal resistance with recommended 0.2" × 0.2" copper pads; informs PCB layout requirements for thermal management in high-reliability applications. |
| TJmax | +150 °C - Maximum allowable junction temperature; enables use in under-hood automotive environments without derating penalties. |
| AEC-Q101 Qualified | Yes - Validated for automotive electronic systems per stress test requirements including HTOL, TC, UHAST, and ESD; required for ECUs, ADAS sensors, and body control modules. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. Polarity indicated by cathode band on one end; anode and cathode terminals are axially oriented along the body length.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; connected to lower-potential side of protected circuit (e.g., ground or return path) | Enables unidirectional clamping from cathode to anode; must be tied to system ground or common reference to shunt transients away from ICs. |
| Cathode | Current exit terminal in forward bias; marked with band; connected to higher-potential side (e.g., power rail or signal line) | Acts as the protected node interface; absorbs positive-going transients by conducting to anode when voltage exceeds VBR. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability across temperature cycling, humidity, and lifetime stress tests-enables direct use in Tier-1 ECU designs without additional qualification. |
| 600 W peak pulse power (10/1000 µs) | Supports IEC 61000-4-5 Level 4 (4 kV) surge immunity on 12 V lines with margin; eliminates need for cascaded protection stages in cost-sensitive modules. |
| Low clamping ratio (VC/VBR ≈ 1.45) | Minimizes overvoltage exposure during clamping-critical for safeguarding 12 V tolerant CAN transceivers and automotive microcontrollers with 16 V absolute max ratings. |
| MSL Level 1 (260 °C peak reflow) | Compatible with standard lead-free SMT reflow profiles without pre-baking; reduces manufacturing complexity and yield risk in high-volume automotive PCB assembly. |
| Glass passivated junction | Ensures stable leakage current (<1.0 µA at VWM) and long-term parameter stability under thermal cycling-essential for 15-year automotive service life. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Protection |
|---|---|
|
Use Scenario: Protecting 12 V battery-fed ECUs (e.g., HVAC controllers, lighting modules) from load dump and alternator ripple transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and local regulator input to clamp positive surges up to 15.4 V. Use Value: Prevents regulator latch-up or MOSFET gate oxide damage during ISO 7637-2 Pulse 5a (75 V/350 ms), maintaining system uptime in harsh vehicle environments. |
Use Scenario: Shielding 4–20 mA current loop outputs of pressure/temperature sensors in factory automation PLCs. IC Role / Device Role / Timing Role: TVS mounted across sensor output terminals to absorb ESD events (IEC 61000-4-2 ±8 kV contact) and cable-coupled noise. Use Value: Maintains analog signal integrity below 0.1% full-scale error by limiting transient-induced offset shift, ensuring metrology-grade accuracy. |
| Consumer USB Port ESD Protection | Telecom DSL Line Surge Suppression |
|
Use Scenario: Safeguarding USB 2.0 data lines (D+/D−) and VBUS in smart home hubs against human-body-model ESD. IC Role / Device Role / Timing Role: Low-capacitance TVS (CJ < 100 pF at 0 V) placed inline on each signal path to divert ±15 kV discharges. Use Value: Preserves 480 Mbps data integrity without signal rise-time degradation-verified via TDR measurements per USB-IF compliance testing. |
Use Scenario: Front-end protection of ADSL/VDSL line drivers in residential gateways exposed to lightning-induced longitudinal surges. IC Role / Device Role / Timing Role: Bidirectional-capable variant (SMBJ9.0CHE3/52 used in unidirectional configuration with series coupling) clamps common-mode transients on twisted-pair inputs. Use Value: Meets GR-1089-CORE Level 3 (10/700 µs, 10 kV) requirements while sustaining <100 ns response time to prevent PHY layer lockup. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ9.0AHE3/52 | No AEC-Q101 qualification; identical electrical specs and package; commercial-grade only. | Not approved for automotive safety-critical or under-hood use; suitable for industrial or consumer products with lower reliability requirements. | Select when AEC-Q101 is not mandated and cost optimization is prioritized over automotive qualification. |
| SMCJ9.0AHE3/52 | Same VWM, VBR, VC, but in larger SMC (DO-214AB) package; 1500 W PPPM; RθJA = 50 °C/W. | Higher surge capacity and better thermal performance-but requires 30% more PCB area and incompatible footprint. | Choose when system-level surge testing exceeds 600 W (e.g., ISO 16750-2 Class D) and board space permits larger package. |
Compared with SMBJ9.0AHE3/52, the SMBJ9.0CHE3/52 adds automotive qualification without electrical trade-offs; versus SMCJ9.0AHE3/52, it trades surge headroom and thermal margin for compactness and drop-in compatibility in space-constrained automotive modules.
Availability
SMBJ9.0CHE3/52 is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor interfaces, and telecom line card designs requiring stable component supply, AEC-Q101 traceability, and consistent surge performance across production batches.
Supply support for SMBJ9.0CHE3/52 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, and protection devices with emphasis on reliability, precision, and application-specific validation.
The SMBJ series was engineered for high-volume automotive and industrial transient suppression, balancing compact SMB packaging, AEC-Q101 compliance, and repeatable clamping performance across extreme temperature and surge stress conditions.
FAQ
What is the maximum clamping voltage of SMBJ9.0CHE3/52 under a 10/1000 µs surge?
The SMBJ9.0CHE3/52 has a maximum clamping voltage (VC) of 15.4 V at 39.0 A peak pulse current with a 10/1000 µs waveform. This value is measured per Figure 1 and Table 1 of the Vishay datasheet 88392 and defines the upper voltage limit imposed on protected circuitry during standardized surge events-critical for ensuring compatibility with 12 V-rated ICs and regulators.
Is SMBJ9.0CHE3/52 qualified for automotive applications?
Yes, SMBJ9.0CHE3/52 is AEC-Q101 qualified, as confirmed in the "MECHANICAL DATA" section and ordering information table of Vishay document 88392. The "HE3" suffix explicitly denotes RoHS-compliant and AEC-Q101 qualified variants, making SMBJ9.0CHE3/52 suitable for use in automotive ECUs, ADAS sensors, and body electronics where qualification evidence is mandatory.
What is the reverse leakage current specification for SMBJ9.0CHE3/52 at its stand-off voltage?
The SMBJ9.0CHE3/52 exhibits a maximum reverse leakage current (ID) of 1.0 µA at its 9.0 V stand-off voltage (VWM), per the "ELECTRICAL CHARACTERISTICS" table in Vishay datasheet 88392. This low leakage ensures minimal power drain in always-on automotive modules and preserves battery life in infotainment and telematics systems.
Does SMBJ9.0CHE3/52 have a defined polarity marking, and how is it identified?
Yes, SMBJ9.0CHE3/52 is unidirectional and features a visible cathode band on the device body, as stated in the "MECHANICAL DATA" section. The banded end corresponds to the cathode terminal; the opposite end is the anode. This marking is essential for correct orientation during PCB placement to ensure proper clamping direction on positive transients.
What is the thermal resistance junction-to-ambient (RθJA) for SMBJ9.0CHE3/52, and what does it imply for PCB layout?
The SMBJ9.0CHE3/52 has a typical RθJA of 100 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal, per the "THERMAL CHARACTERISTICS" table. This means designers must allocate minimum pad area and consider thermal vias or adjacent copper pour to maintain junction temperature ≤150 °C under sustained 5.0 W power dissipation or repetitive surge conditions.
SMBJ9.0CHE3/52 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 9V
- Voltage - Breakdown (Min):
- 10V
- Voltage - Clamping (Max) @ Ipp:
- 16.9V
- Current - Peak Pulse (10/1000µs):
- 35.5A
- 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)
SMBJ9.0CHE3/52 FAQ
1.How can I place an order for SMBJ9.0CHE3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ9.0CHE3/52 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 SMBJ9.0CHE3/52 reliable?
The price and inventory of SMBJ9.0CHE3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ9.0CHE3/52 is usually 5 days.
3.What payment methods are accepted for SMBJ9.0CHE3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ9.0CHE3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ9.0CHE3/52?
SMBJ9.0CHE3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ9.0CHE3/52 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 SMBJ9.0CHE3/52?
For technical support, including SMBJ9.0CHE3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ9.0CHE3/52 requirements.
6.How does Aetrix verify that SMBJ9.0CHE3/52 is sourced from the original manufacturer or authorized distributors?
All SMBJ9.0CHE3/52 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 SMBJ9.0CHE3/52 meets industry standards.
7.What is the process for return or replacement of SMBJ9.0CHE3/52?
All SMBJ9.0CHE3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ9.0CHE3/52, 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 SMBJ9.0CHE3/52 part is unused and in its original packaging.
Return procedure for SMBJ9.0CHE3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ9.0CHE3/52 Tags
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