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Vishay General Semiconductor - Diodes Division SMBJ5.0CHE3/5B
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- Part No.:
- SMBJ5.0CHE3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ5.0CHE3/5B.pdf
- Description:
- TVS DIODE 5VWM 9.6VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,916
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Product details
Overview
SMBJ5.0CHE3/5B from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed for primary overvoltage protection of DC power rails and signal lines. It features a 5.0 V stand-off voltage (VWM), 6.4–7.07 V breakdown voltage (VBR) at 10 mA, 600 W peak pulse power (10/1000 µs), and clamps transients to ≤9.2 V at 65.2 A, making it suitable for protecting MOSFET gates, microcontroller I/O, and automotive ECUs against ESD and load dump.
For engineers reviewing the SMBJ5.0CHE3/5B datasheet, SMBJ5.0CHE3/5B pinout, SMBJ5.0CHE3/5B application, or SMBJ5.0CHE3/5B equivalent, key selection criteria include its AEC-Q101 qualification, 150 °C max junction temperature, low clamping ratio (VC/VBR ≈ 1.38), and RoHS-compliant matte tin-plated leads compatible with J-STD-002 soldering standards.
Technical Context
This TVS diode operates as a unidirectional clamping device: under normal bias, it presents high impedance above 5.0 V reverse stand-off voltage; when subjected to transient overvoltage exceeding its breakdown threshold (6.4–7.07 V), it avalanches rapidly (<1 ns response) to limit voltage across protected circuitry. Its glass-passivated junction ensures stable leakage and long-term reliability under repetitive surge stress.
The SMBJ5.0CHE3/5B is rated for 100 A non-repetitive forward surge current (8.3 ms half-sine), supports 0.01% duty cycle repetitive operation, and exhibits 0.057 %/°C temperature coefficient of VBR, enabling predictable performance across -55 °C to +150 °C operating range. Thermal resistance is 100 °C/W junction-to-ambient (on 0.2" × 0.2" copper pads).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 5.0 V - Maximum continuous reverse working voltage before significant leakage; defines safe operating margin for 5 V rail protection. |
| VBR (min/max) | 6.4 V / 7.07 V at 10 mA - Confirmed breakdown range ensures reliable triggering without premature conduction during nominal 5 V operation. |
| VC @ IPPM | ≤9.2 V at 65.2 A - Clamping voltage limits downstream IC stress during 600 W transient events (10/1000 µs waveform). |
| PPPM | 600 W - Peak pulse power rating determines survivability against lightning-induced surges and inductive switching spikes. |
| IFSM | 100 A - Peak forward surge current rating validates robustness against 8.3 ms automotive load dump pulses. |
| TJ max | +150 °C - Maximum junction temperature enables use in under-hood automotive environments and industrial enclosures. |
| Package | SMB (DO-214AA) - Surface-mount outline with 0.205" × 0.130" footprint, optimized for automated placement and thermal dissipation on PCB copper pads. |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case with matte tin-plated leads; polarity indicated by cathode band (cathode terminal). Mounting requires minimum 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pad per terminal per Vishay recommended layout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Transient return path | Connected to ground or low-impedance return plane; carries full surge current during clamping event. |
| Cathode | Protected line connection / Surge input | Connected to line being protected (e.g., 5 V supply rail); voltage referenced to anode during avalanche conduction. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units and body electronics per stress test requirements. |
| 600 W peak pulse power (10/1000 µs) | Withstands high-energy transients common in 12 V/24 V vehicle electrical systems and industrial motor drives. |
| Glass passivated junction | Ensures stable reverse leakage (<800 µA at VWM) and long-term parameter stability under thermal cycling. |
| MSL Level 1 (260 °C peak reflow) | Compatible with standard lead-free SMT reflow profiles without moisture sensitivity concerns. |
| Low clamping ratio (VC/VBR ≈ 1.38) | Minimizes overvoltage exposure to protected ICs-critical for safeguarding 5 V logic interfaces and analog sensors. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: Protecting 5 V power supply inputs of engine control modules (ECMs) and body control modules (BCMs) against ISO 7637-2 pulse 1, 2a, and 5a transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between 5 V rail and chassis ground to clamp negative-going load dump and positive-going inductive spikes. Use Value: Limits voltage excursion to ≤9.2 V during 65.2 A surge, preventing latch-up or gate oxide damage in downstream 5 V regulators and microcontrollers. |
Use Scenario: Safeguarding analog output lines (e.g., 4–20 mA current loop drivers) and digital I/O (CAN, LIN) of industrial pressure/temperature sensors exposed to field wiring surges. IC Role / Device Role / Timing Role: Standoff-clamp TVS connected from sensor signal line to local ground, activated within <1 ns upon overvoltage detection. Use Value: Maintains signal integrity by clamping transients before they propagate into precision ADC front-ends or isolated interface ICs. |
| Consumer USB Port ESD Protection | Telecom DC Power Input Protection |
|
Use Scenario: Secondary-level ESD protection on VBUS line of USB 2.0 ports in set-top boxes and smart displays, supplementing primary polymer-based TVS. IC Role / Device Role / Timing Role: Fast-response silicon TVS placed upstream of USB power switch to absorb ±15 kV contact discharge per IEC 61000-4-2. Use Value: Achieves sub-9.2 V clamping during 30 A ESD pulse, preventing damage to USB controller PHY and overcurrent protection FETs. |
Use Scenario: Overvoltage suppression on -48 V DC telecom power feeds entering base station equipment cabinets subject to lightning-induced surges. IC Role / Device Role / Timing Role: Unidirectional TVS configured with cathode to -48 V rail and anode to system ground to handle negative transients. Use Value: Withstands 600 W surges while maintaining tight clamping margin relative to -48 V rail tolerance, ensuring uninterrupted operation of PoE injectors and RF amplifiers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ5.0AHE3/5B | No AEC-Q101 qualification; identical electrical specs and SMB package. | Not approved for automotive safety-critical or under-hood use; limited to commercial-grade industrial/consumer designs. | Select SMBJ5.0AHE3/5B only if AEC-Q101 compliance is not required and cost optimization is prioritized. |
| SAC5.0 | Same VWM (5.0 V) and PPPM (600 W), but in smaller SOD-123 package (lower IPPM = 43 A, VC = 14.5 V). | Lower surge handling capability and higher clamping voltage reduce protection margin for sensitive 5 V ICs. | Choose SAC5.0 only for space-constrained consumer applications where 14.5 V clamping is acceptable and surge energy is lower. |
Compared with SMBJ5.0AHE3/5B, the SMBJ5.0CHE3/5B adds AEC-Q101 qualification for automotive deployment; compared with SAC5.0, it delivers superior clamping (9.2 V vs. 14.5 V) and higher surge current capacity (65.2 A vs. 43 A) in a thermally robust SMB package-making SMBJ5.0CHE3/5B the preferred choice for demanding 5 V rail protection where reliability and performance margins are critical.
Availability
SMBJ5.0CHE3/5B is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor interfaces, consumer USB power circuits, and telecom DC input stages requiring stable component supply with AEC-Q101 assurance and consistent surge performance.
Supply support for SMBJ5.0CHE3/5B 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 validation.
The SMBJ series is engineered for robust transient suppression in harsh environments-including automotive, industrial, and telecom-delivering precise clamping, high surge endurance, and qualification-grade consistency across temperature and life cycles.
FAQ
What is the maximum clamping voltage of SMBJ5.0CHE3/5B at its rated peak pulse current?
The SMBJ5.0CHE3/5B has a maximum clamping voltage (VC) of 9.2 V at its rated peak pulse current (IPPM) of 65.2 A, measured using the standardized 10/1000 µs double-exponential waveform. This value is guaranteed per Vishay's datasheet (Document Number: 88392, Rev. 09-Jan-2024) and reflects the actual voltage seen by protected circuitry during worst-case surge events. The SMBJ5.0CHE3/5B maintains this clamping performance across its full operating temperature range.
Is SMBJ5.0CHE3/5B suitable for automotive applications?
Yes, SMBJ5.0CHE3/5B is AEC-Q101 qualified, explicitly validated for automotive use per Vishay's ordering code "HE3" suffix. It meets stress test requirements for temperature cycling, humidity, mechanical shock, and surge endurance relevant to engine control, body electronics, and infotainment systems. Its 150 °C max junction temperature and MSL Level 1 reflow compatibility further support under-hood and module-level integration. The SMBJ5.0CHE3/5B is designed for these conditions.
How does the SMBJ5.0CHE3/5B differ from the standard SMBJ5.0A-E3/5B?
The SMBJ5.0CHE3/5B differs from SMBJ5.0A-E3/5B solely in its AEC-Q101 qualification-both share identical electrical parameters (VWM = 5.0 V, VBR = 6.4–7.07 V, VC = 9.2 V), SMB package, RoHS compliance, and thermal characteristics. The "H" in HE3 denotes automotive qualification, verified through extended reliability testing. All other markings, dimensions, and soldering specifications match. The SMBJ5.0CHE3/5B is the qualified variant for automotive deployments.
What is the reverse leakage current of SMBJ5.0CHE3/5B at its stand-off voltage?
At its 5.0 V stand-off voltage (VWM) and 25 °C ambient temperature, the SMBJ5.0CHE3/5B exhibits a maximum reverse leakage current (ID) of 800 µA, as specified in the Vishay datasheet (Table "ELECTRICAL CHARACTERISTICS"). This low leakage ensures minimal power loss in standby mode and avoids false triggering in precision 5 V monitoring circuits. The SMBJ5.0CHE3/5B maintains this specification across its full -55 °C to +125 °C operating range.
Can SMBJ5.0CHE3/5B be used for bidirectional transient protection?
No, SMBJ5.0CHE3/5B is a unidirectional TVS diode, intended only for DC line protection where polarity is fixed (e.g., 5 V rail to ground). For bidirectional protection-such as AC signal lines or data buses-Vishay specifies the CA-suffix variant (e.g., SMBJ5.0CA). Using SMBJ5.0CHE3/5B in reverse-biased configurations risks permanent damage due to lack of symmetrical breakdown. Always verify polarity marking (cathode band) before placement. The SMBJ5.0CHE3/5B must be installed with correct orientation.
SMBJ5.0CHE3/5B 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):
- 5V
- Voltage - Breakdown (Min):
- 6.4V
- Voltage - Clamping (Max) @ Ipp:
- 9.6V
- Current - Peak Pulse (10/1000µs):
- 62.5A
- 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)
SMBJ5.0CHE3/5B FAQ
1.How can I place an order for SMBJ5.0CHE3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ5.0CHE3/5B 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 SMBJ5.0CHE3/5B reliable?
The price and inventory of SMBJ5.0CHE3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ5.0CHE3/5B is usually 5 days.
3.What payment methods are accepted for SMBJ5.0CHE3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ5.0CHE3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ5.0CHE3/5B?
SMBJ5.0CHE3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ5.0CHE3/5B 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 SMBJ5.0CHE3/5B?
For technical support, including SMBJ5.0CHE3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ5.0CHE3/5B requirements.
6.How does Aetrix verify that SMBJ5.0CHE3/5B is sourced from the original manufacturer or authorized distributors?
All SMBJ5.0CHE3/5B 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 SMBJ5.0CHE3/5B meets industry standards.
7.What is the process for return or replacement of SMBJ5.0CHE3/5B?
All SMBJ5.0CHE3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ5.0CHE3/5B, 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 SMBJ5.0CHE3/5B part is unused and in its original packaging.
Return procedure for SMBJ5.0CHE3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ5.0CHE3/5B Tags
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