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Vishay General Semiconductor - Diodes Division SMBJ9.0CHE3/5B
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- Part No.:
- SMBJ9.0CHE3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ9.0CHE3/5B.pdf
- Description:
- TVS DIODE 9VWM 16.9VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:6,823
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Product details
Overview
SMBJ9.0CHE3/5B from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in the SMB (DO-214AA) package, designed for clamping inductive switching transients and ESD events on power rails and signal lines. 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 - deployed in automotive power supply protection and industrial sensor interface circuits.
For engineers reviewing the SMBJ9.0CHE3/5B datasheet, SMBJ9.0CHE3/5B pinout, SMBJ9.0CHE3/5B application, or SMBJ9.0CHE3/5B equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification status, 150 °C max junction temperature, low incremental surge resistance, and compatibility with automated SMT placement on 0.2" × 0.2" copper pads.
Technical Context
This TVS diode operates as a voltage-clamping device in series with sensitive downstream circuitry, conducting only when reverse voltage exceeds its breakdown threshold. Its glass-passivated junction ensures stable leakage performance (<10 µA at VWM) and fast response time (<1.0 ns), enabling effective suppression of fast-rising transients such as ESD (IEC 61000-4-2) and load dump spikes.
The SMBJ9.0CHE3/5B is rated for 100 A non-repetitive forward surge current (IFSM, 8.3 ms half-sine), supports 5.0 W steady-state power dissipation at 50 °C ambient, and exhibits a positive temperature coefficient of VBR (+0.074 %/°C), ensuring predictable voltage shift over temperature in automotive-grade designs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 9.0 V - Maximum continuous reverse operating voltage before significant conduction begins; sets minimum system rail margin for reliable clamping. |
| VBR (min/max) | 10.0 V / 11.1 V at IT = 1.0 mA - Confirmed breakdown range defining turn-on threshold under standardized test conditions. |
| VC @ IPPM | 15.4 V at 39.0 A - Clamped voltage during 600 W transient event; determines maximum stress imposed on protected ICs. |
| PPPM | 600 W - Peak pulse power handling with 10/1000 µs waveform; defines transient energy absorption capability per event. |
| IPPM | 39.0 A - Corresponding peak pulse current at VC; used to size PCB trace width and verify layout survivability. |
| TJ max. | +150 °C - Maximum junction temperature rating; enables operation in under-hood automotive environments. |
| RθJA | 100 °C/W - Junction-to-ambient thermal resistance on standard 0.2" × 0.2" copper pads; informs thermal derating above 25 °C. |
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); matte tin-plated leads compliant with J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / reverse voltage reference | Connected to lower-potential side (e.g., GND or return path); defines polarity-dependent clamping direction. |
| Cathode | Clamping output / high-side connection | Marked end; connected to protected line (e.g., 9 V rail); conducts when line voltage exceeds VBR relative to anode. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units and body electronics requiring reliability under thermal cycling and vibration. |
| 600 W peak pulse power | Withstands ISO 7637-2 Pulse 1/2a/3a transients and IEC 61000-4-5 surge events without degradation when mounted per recommended pad layout. |
| Low clamping ratio (VC/VBR ≈ 1.5) | Minimizes overvoltage exposure to downstream MOSFETs or microcontrollers during clamping, reducing risk of latch-up or gate oxide damage. |
| MSL Level 1 (260 °C peak) | Enables single-reflow soldering without moisture sensitivity concerns; eliminates pre-bake requirement in standard SMT lines. |
| Glass passivated junction | Ensures stable reverse leakage (<10 µA at 9.0 V) across -55 °C to +150 °C, critical for low-power always-on sensor nodes. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface |
|---|---|
|
Use Scenario: Protecting 9 V supply lines in vehicle infotainment head units against load dump and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery input and DC-DC converter input stage. Use Value: Limits transient voltage to ≤15.4 V during 39 A surges, preventing regulator latch-up and preserving system uptime. |
Use Scenario: Shielding analog outputs of pressure sensors in factory automation PLC modules from ESD and cable discharge events. IC Role / Device Role / Timing Role: Clamping element on 4–20 mA current loop output line, referenced to local ground. Use Value: Sub-1 ns response ensures clamping occurs before sensor amplifier input stages are damaged by ±8 kV contact ESD. |
| Consumer USB Power Input | Telecom Line Card Surge Suppression |
|
Use Scenario: Safeguarding USB-C PD input circuitry in portable medical monitors from hot-plug transients and adapter faults. IC Role / Device Role / Timing Role: Primary overvoltage clamp on VBUS line upstream of buck controller and USB PD controller. Use Value: 9.0 V VWM aligns with USB PD 9 V PPS profiles; 15.4 V VC stays below absolute maximum ratings of common 16 V-rated FETs. |
Use Scenario: Front-end protection for Ethernet PHY power pins in telecom base station line cards exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Secondary clamping device after gas discharge tube (GDT), absorbing residual energy post-GDT firing. Use Value: 600 W rating handles residual 10/1000 µs tail energy; SMB footprint allows dense placement near connector entry points. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ9.0AHE3/5B | No AEC-Q101 qualification; identical electrical specs and packaging. | Restricted to commercial-grade systems where automotive reliability validation is not required. | Select when cost sensitivity outweighs automotive qualification needs and thermal cycling compliance is not mandated. |
| SMBJ9.0CAHE3/5B | Bidirectional variant; symmetric VBR (10.0–11.1 V) in both polarities; no polarity marking. | Suitable for AC-coupled or floating signal lines (e.g., RS-485, CAN bus) where bidirectional transients occur. | Choose only if protecting differential or AC signals; not interchangeable in unidirectional DC rail applications due to lack of polarity definition. |
Compared with SMBJ9.0AHE3/5B and SMBJ9.0CAHE3/5B, the SMBJ9.0CHE3/5B uniquely combines AEC-Q101 qualification with unidirectional clamping - making it the sole option among these three for automotive 9 V rail protection where both reliability certification and polarity-specific clamping are mandatory.
Availability
SMBJ9.0CHE3/5B is available at Aetrix Electronics and suitable for automotive power management, industrial sensor interfaces, consumer USB power inputs, and telecom line card surge protection requiring stable component supply and long-term lifecycle support.
Supply support for SMBJ9.0CHE3/5B 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, MOSFETs, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The SMBJ series is engineered for robust transient suppression in harsh environments - targeting automotive, industrial, and telecom systems where failure modes must be mitigated through validated clamping performance and thermal resilience.
FAQ
What is the clamping voltage of SMBJ9.0CHE3/5B at its rated peak pulse current?
The SMBJ9.0CHE3/5B has a maximum clamping voltage (VC) of 15.4 V at 39.0 A peak pulse current (IPPM) with a 10/1000 µs waveform. This value is measured under standardized test conditions and defines the upper voltage limit imposed on protected circuitry during a full-power transient event. The SMBJ9.0CHE3/5B maintains this clamping performance across its specified operating temperature range.
Is SMBJ9.0CHE3/5B qualified for automotive applications?
Yes, SMBJ9.0CHE3/5B is AEC-Q101 qualified, as confirmed by Vishay's ordering code suffix "HE3" and documentation in the SMBJ5.0A–SMBJ188A datasheet (Document Number: 88392, Revision: 09-Jan-2024). This qualification covers stress tests including temperature cycling, humidity bias, and mechanical shock - validating its suitability for under-hood and chassis-mounted automotive electronics.
What does the "5B" in SMBJ9.0CHE3/5B indicate?
The "5B" denotes the preferred package code specifying 3200 units per 13-inch diameter plastic tape-and-reel delivery format. This differs from "52", which indicates 750 units per 7-inch reel. Both formats use the same SMB (DO-214AA) package and electrical specifications; "5B" is optimized for high-volume SMT production lines requiring longer reel lengths.
How does SMBJ9.0CHE3/5B differ from SMBJ9.0AHE3/5B?
The SMBJ9.0CHE3/5B and SMBJ9.0AHE3/5B share identical electrical parameters, package, and RoHS compliance, but only SMBJ9.0CHE3/5B carries AEC-Q101 qualification. The "C" in the former signifies automotive-grade validation, while the latter is commercial-grade. For automotive designs requiring formal qualification evidence, SMBJ9.0CHE3/5B is the required part.
What is the maximum reverse leakage current for SMBJ9.0CHE3/5B at its stand-off voltage?
At VWM = 9.0 V and TA = 25 °C, the SMBJ9.0CHE3/5B exhibits a maximum reverse leakage current (ID) of 10 µA. This low leakage supports energy-efficient designs in battery-powered or always-on systems, and remains stable across temperature due to its glass-passivated junction construction.
SMBJ9.0CHE3/5B Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- 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)
SMBJ9.0CHE3/5B FAQ
1.How can I place an order for SMBJ9.0CHE3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ9.0CHE3/5B 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 SMBJ9.0CHE3/5B reliable?
The price and inventory of SMBJ9.0CHE3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ9.0CHE3/5B is usually 5 days.
3.What payment methods are accepted for SMBJ9.0CHE3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ9.0CHE3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ9.0CHE3/5B?
SMBJ9.0CHE3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ9.0CHE3/5B 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 SMBJ9.0CHE3/5B?
For technical support, including SMBJ9.0CHE3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ9.0CHE3/5B requirements.
6.How does Aetrix verify that SMBJ9.0CHE3/5B is sourced from the original manufacturer or authorized distributors?
All SMBJ9.0CHE3/5B 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 SMBJ9.0CHE3/5B meets industry standards.
7.What is the process for return or replacement of SMBJ9.0CHE3/5B?
All SMBJ9.0CHE3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ9.0CHE3/5B, 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 SMBJ9.0CHE3/5B part is unused and in its original packaging.
Return procedure for SMBJ9.0CHE3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ9.0CHE3/5B Tags
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