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Vishay General Semiconductor - Diodes Division SMBJ9.0-E3/52
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- Part No.:
- SMBJ9.0-E3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ9.0-E3/52.pdf
- Description:
- TVS DIODE 9VWM 16.9VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:6,787
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Product details
Overview
SMBJ9.0-E3/52 from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in 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 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 SMBJ9.0-E3/52 datasheet, SMBJ9.0-E3/52 pinout, SMBJ9.0-E3/52 application, or SMBJ9.0-E3/52 equivalent, key selection criteria include its unidirectional polarity, low clamping ratio (VC/VWM ≈ 1.71), 1.0 µA max reverse leakage at VWM, AEC-Q101 qualification eligibility (via HE3 suffix), and compatibility with automated SMT placement on standard PCB pads.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: under normal conditions it presents high impedance (<1.0 µA leakage at 9.0 V), then rapidly avalanches below 100 ns to clamp transient energy into the PCB ground plane. Its glass-passivated junction ensures stable breakdown characteristics and long-term reliability across -55 °C to +150 °C operating junction temperature range.
The device complies with ANSI/IEEE C62.35 surge standards and delivers repeatable 600 W pulse handling when mounted on 5.0 mm × 5.0 mm copper pads per terminal. Its MSL Level 1 rating (JEDEC J-STD-020) and matte tin-plated leads support lead-free reflow up to 260 °C peak without degradation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 9.0 V - Maximum continuous reverse voltage before significant leakage; defines maximum working voltage of protected line. |
| VBR (Breakdown Voltage) | 10.0–11.1 V at 1.0 mA - Confirmed avalanche onset range; ensures reliable triggering above system operating voltage. |
| VC (Clamping Voltage) | 15.4 V at 39.0 A (10/1000 µs) - Peak voltage seen by downstream IC during worst-case surge; limits stress on protected MOSFET or sensor. |
| PPPM (Peak Pulse Power) | 600 W - Sustained single-pulse energy dissipation capability; enables protection against IEC 61000-4-5 Level 4 surges. |
| IPPM (Peak Pulse Current) | 39.0 A - Maximum non-repetitive surge current handled at rated clamping voltage; determines minimum trace width and grounding design. |
| TJmax | +150 °C - Maximum junction temperature; supports operation in under-hood automotive or industrial enclosures without derating. |
| RθJA | 100 °C/W - Thermal resistance junction-to-ambient on standard pad layout; informs thermal margin for repetitive surge duty cycles. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, unidirectional configuration with cathode band marking. Dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H); terminals are matte tin-plated for J-STD-002 solderability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side connection to protected circuit ground | Connected to system GND; completes clamping path during transient events; must be low-inductance tie to ground plane. |
| Cathode | High-side connection to protected signal/power line | Marked by band; connects to line being protected (e.g., 9 V rail or sensor input); carries full surge current during clamping. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Enables robust protection against IEC 61000-4-5 surges up to 4 kV (line-earth) without failure or parameter shift. |
| 15.4 V clamping voltage at 39 A | Provides 6.4 V overhead margin above 9.0 V VWM, ensuring safe operation of 12 V tolerant receivers and logic interfaces. |
| 0.074 %/°C VBR tempco | Minimizes drift over temperature; maintains consistent trigger point across automotive (-40 to +125 °C ambient) environments. |
| MSL Level 1, 260 °C peak reflow | Supports single-pass lead-free assembly without popcorn cracking or delamination; eliminates pre-bake requirements. |
| AEC-Q101 qualification path | HE3 suffix variant available for automotive applications; meets stress test requirements for ignition systems and body control modules. |
Applications
| Automotive Sensor Protection | Industrial PLC Input Protection |
|---|---|
|
Use Scenario: Protecting analog sensor outputs (e.g., pressure, temperature) in engine control units exposed to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Shunt TVS placed between sensor signal line and chassis ground to clamp transients before reaching ADC front-end. Use Value: Limits voltage excursion to ≤15.4 V during 39 A surges, preserving 12-bit ADC accuracy and preventing latch-up in microcontroller input buffers. |
Use Scenario: Safeguarding 24 V digital input channels on programmable logic controllers subjected to relay coil flyback and field wiring surges. IC Role / Device Role / Timing Role: Unidirectional TVS connected across input optocoupler anode-cathode to absorb negative-going transients. Use Value: Clamps reverse spikes to <15.4 V within <100 ns, preventing optocoupler LED damage and maintaining channel isolation integrity. |
| Consumer USB Port ESD Protection | Telecom Line Interface Protection |
|
Use Scenario: Secondary-level ESD protection on VBUS and D+/D- lines of USB 2.0 ports in set-top boxes and smart displays. IC Role / Device Role / Timing Role: Standoff-rated TVS placed after primary polymer PTC to handle residual 8 kV HBM discharges. Use Value: Withstands ≥1000 ESD strikes at ±8 kV (IEC 61000-4-2) while maintaining <1.0 µA leakage at 5 V nominal, avoiding signal attenuation. |
Use Scenario: Overvoltage protection on RJ-11 telephone line interface circuits in VoIP gateways and PBX systems. IC Role / Device Role / Timing Role: Unidirectional TVS installed between tip/ring and ground to suppress lightning-induced common-mode surges. Use Value: Delivers 600 W pulse handling with 15.4 V clamping, meeting GR-1089-CORE Level 3 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 |
|---|---|---|---|
| SMBJ9.0A-E3/52 | Same electrical specs and package; differs only in marking code (KV vs. KV-A) and internal lot traceability; functionally identical. | No functional difference; both meet same Vishay specification 88392 Rev 09-Jan-2024. | Select SMBJ9.0A-E3/52 if legacy BOM references "A" suffix; otherwise SMBJ9.0-E3/52 is preferred for newer procurement. |
| SMCJ9.0A-E3/52 | Same VWM/VBR/VC, but larger SMC (DO-214AB) package; 1500 W PPPM, 100 A IPPM, higher RθJA (65 °C/W). | Used where higher surge margin is required (e.g., outdoor telecom cabinets); requires larger PCB footprint and different pad layout. | Choose SMCJ9.0A-E3/52 only when 600 W is insufficient; SMBJ9.0-E3/52 remains optimal for space-constrained consumer and automotive PCBs. |
Compared with SMBJ9.0A-E3/52, the SMBJ9.0-E3/52 offers identical protection performance in the same SMB footprint, while SMCJ9.0A-E3/52 trades board area for 2.5× higher surge capacity-making SMBJ9.0-E3/52 the preferred choice for cost-sensitive, high-density designs requiring precise 9.0 V standoff.
Availability
SMBJ9.0-E3/52 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC inputs, consumer USB port protection, and telecom line interface circuits requiring stable component supply, RoHS-compliant materials, and repeatable surge performance.
Supply support for SMBJ9.0-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, TVS devices, and power MOSFETs with emphasis on reliability, precision, and application-specific optimization.
The SMBJ series was engineered for high-volume surface-mount surge protection in automotive, industrial, and communications equipment, balancing compact size, repeatable clamping, and AEC-Q101 readiness.
FAQ
What is the maximum clamping voltage of SMBJ9.0-E3/52 under a 10/1000 µs surge?
The SMBJ9.0-E3/52 has a maximum clamping voltage (VC) of 15.4 V when subjected to its rated peak pulse current of 39.0 A with a 10/1000 µs waveform. This value is measured per Figure 1 and Table 1 in Vishay document 88392 and defines the upper voltage limit imposed on protected circuitry during transient events. The SMBJ9.0-E3/52 maintains this clamping performance across its full operating temperature range.
Is SMBJ9.0-E3/52 suitable for automotive applications?
SMBJ9.0-E3/52 itself is commercial-grade (E3 suffix), but Vishay offers the AEC-Q101 qualified variant SMBJ9.0HE3_X (where "X" denotes revision code). The SMBJ9.0-E3/52 shares identical electrical characteristics and package with the HE3 version, enabling direct drop-in qualification upgrade. For production automotive use, specify SMBJ9.0HE3_X; SMBJ9.0-E3/52 is appropriate for prototyping and non-safety-critical automotive subsystems.
What is the reverse leakage current of SMBJ9.0-E3/52 at its 9.0 V stand-off voltage?
At VWM = 9.0 V and TA = 25 °C, the SMBJ9.0-E3/52 exhibits a maximum reverse leakage current (ID) of 1.0 µA. This low leakage ensures minimal power loss and signal distortion in always-on monitoring circuits such as battery-backed sensors or 24 V industrial inputs. Leakage remains ≤5.0 µA up to 80 % of VWM across the full -55 °C to +125 °C ambient range.
How does the thermal resistance of SMBJ9.0-E3/52 affect its surge handling capability?
The SMBJ9.0-E3/52 has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 5.0 mm × 5.0 mm copper pads per terminal. This value directly impacts repetitive surge capability: at 1 % duty cycle (0.01 %), the device can sustain repeated 600 W pulses without exceeding TJmax = 150 °C. Reducing pad area increases RθJA, requiring derating per Figure 2 in Vishay document 88392.
What is the polarity configuration of SMBJ9.0-E3/52, and how is it identified on the package?
SMBJ9.0-E3/52 is a unidirectional TVS diode, meaning it conducts only in reverse bias (anode to ground, cathode to protected line). Polarity is marked by a visible cathode band on the SMB (DO-214AA) package body, aligned with the cathode terminal. This band must be oriented toward the positive side of the protected circuit; incorrect orientation renders the device ineffective against positive transients.
SMBJ9.0-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:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBJ)
SMBJ9.0-E3/52 FAQ
1.How can I place an order for SMBJ9.0-E3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ9.0-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 SMBJ9.0-E3/52 reliable?
The price and inventory of SMBJ9.0-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 SMBJ9.0-E3/52 is usually 5 days.
3.What payment methods are accepted for SMBJ9.0-E3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ9.0-E3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ9.0-E3/52?
SMBJ9.0-E3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ9.0-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 SMBJ9.0-E3/52?
For technical support, including SMBJ9.0-E3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ9.0-E3/52 requirements.
6.How does Aetrix verify that SMBJ9.0-E3/52 is sourced from the original manufacturer or authorized distributors?
All SMBJ9.0-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 SMBJ9.0-E3/52 meets industry standards.
7.What is the process for return or replacement of SMBJ9.0-E3/52?
All SMBJ9.0-E3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ9.0-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 SMBJ9.0-E3/52 part is unused and in its original packaging.
Return procedure for SMBJ9.0-E3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ9.0-E3/52 Tags
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