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Vishay General Semiconductor - Diodes Division SMBJ15CHE3/5B
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- Part No.:
- SMBJ15CHE3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ15CHE3/5B.pdf
- Description:
- TVS DIODE 15VWM 26.9VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:8,066
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Product details
Overview
SMBJ15CHE3/5B from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, designed for robust overvoltage protection of sensitive electronics. It features a 15 V stand-off voltage (VWM), 16.7–18.5 V breakdown voltage (VBR) at 1 mA, 24.4 V maximum clamping voltage (VC) at 24.6 A peak pulse current, and 600 W peak pulse power rating with 10/1000 µs waveform - deployed on power rails and signal lines in industrial motor drives and automotive ECUs.
For engineers reviewing the SMBJ15CHE3/5B datasheet, SMBJ15CHE3/5B pinout, SMBJ15CHE3/5B application, or SMBJ15CHE3/5B equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, thermal resistance (RθJA = 100 °C/W), junction temperature range (−55 to +150 °C), and RoHS-compliant packaging configuration for production-grade ESD and surge design validation.
Technical Context
This TVS diode operates as a unidirectional clamping device: reverse-biased during normal operation with ≤1.0 µA leakage at 15 V, then rapidly avalanches when transient voltage exceeds VBR to limit downstream voltage to ≤24.4 V. Its glass-passivated junction ensures stable breakdown characteristics and fast response time (<1 ns), while the low incremental surge resistance supports effective energy diversion without thermal runaway.
The SMBJ15CHE3/5B variant is AEC-Q101 qualified and marked with HE3 suffix, indicating automotive-grade reliability, halogen-free RoHS compliance, and MSL Level 1 moisture sensitivity. It is rated for 100 A non-repetitive forward surge current (IFSM, 8.3 ms half-sine) and derates linearly above 25 °C ambient per Figure 2 in the datasheet.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 15 V - Maximum continuous reverse voltage before significant leakage; defines operating margin below clamping threshold |
| VBR (Breakdown) | 16.7–18.5 V at 1 mA - Confirmed avalanche initiation range; ensures reliable triggering above normal rail voltage |
| VC (Clamping) | 24.4 V at 24.6 A (10/1000 µs) - Peak voltage seen by protected circuit during worst-case surge; critical for IC I/O survival |
| PPPM | 600 W - Sustained transient energy absorption capability; enables protection against IEC 61000-4-5 Level 4 surges |
| IPPM | 24.6 A - Peak surge current handled at VC; determines minimum trace width and PCB copper area required |
| TJ Range | −55 to +150 °C - Full automotive-grade junction temperature envelope; supports under-hood and engine-control applications |
| RθJA | 100 °C/W - Thermal resistance from junction to ambient on standard 0.2" × 0.2" copper pads; informs heatsinking requirements |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002. Cathode indicated by band marking on unidirectional devices.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to ground or lower-potential node; completes clamping path during positive transients on cathode side |
| Cathode | Reverse-biased input terminal | Connected to protected line (e.g., 12 V rail or CAN_H); avalanche conduction occurs when voltage exceeds VBR |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive electronics per stress test requirements - enables use in ADAS, body control modules, and powertrain systems |
| 600 W peak pulse power | Handles IEC 61000-4-5 combination wave surges up to 4 kV (open-circuit)/2 kA (short-circuit) without degradation |
| Low clamping ratio (VC/VWM = 1.63) | Minimizes overvoltage stress on downstream components - critical for 15 V-rated MOSFET gates and microcontroller I/O |
| MSL Level 1, 260 °C reflow compatible | Supports standard lead-free SMT assembly without pre-baking; eliminates moisture-related popcorning risk |
| Halogen-free & RoHS-compliant | Fulfills EU ELV and China RoHS environmental mandates; suitable for global OEM supply chains |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: 12 V battery-supplied ECU power input exposed to load-dump and jump-start transients. IC Role / Device Role / Timing Role: Unidirectional TVS clamping device placed upstream of DC/DC converter input. Use Value: Limits transient voltage to ≤24.4 V, preventing damage to 36 V-rated input stages while surviving 600 W pulses. |
Use Scenario: Analog output line (4–20 mA) from pressure sensor in factory automation PLC rack. IC Role / Device Role / Timing Role: Reverse-biased protection element across signal and return paths. Use Value: Clamps induced lightning-induced surges to <25 V, preserving 24 V system integrity and ADC reference stability. |
| Telecom DC Feeder Line Protection | Consumer Appliance Motor Drive Protection |
|
Use Scenario: −48 V DC power feed to remote radio unit in cellular base station cabinet. IC Role / Device Role / Timing Role: Unidirectional suppressor on negative rail relative to chassis ground. Use Value: Withstands repetitive 10/1000 µs surges up to 600 W, meeting Telcordia GR-1089-CORE immunity requirements. |
Use Scenario: H-bridge gate driver supply rail in smart washing machine inverter board. IC Role / Device Role / Timing Role: Standoff-clamp TVS on 15 V auxiliary rail feeding high-side driver ICs. Use Value: Prevents latch-up in gate drivers during MOSFET switching-induced ringing, leveraging 24.4 V clamping ceiling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ15AHE3/5B | Same electrical specs and AEC-Q101 qualification; differs only in packaging suffix (HE3 vs. HE3/5B denotes tape/reel size) | Identical functional use; no circuit or layout impact | Select based on preferred reel quantity (3200 pcs vs. 750 pcs) and logistics compatibility |
| SMAJ15AHE3/A | Lower 400 W PPPM, SMA package (smaller footprint, higher RθJA = 140 °C/W), same VWM/VC | Suitable for space-constrained consumer boards but not for automotive under-hood thermal environments | Choose SMAJ15AHE3/A only if board area is critical and surge energy remains ≤400 W |
Compared with SMBJ15AHE3/5B, the SMBJ15CHE3/5B offers identical performance and qualification - the "C" denotes Vishay's internal revision code, not functional change. Versus SMAJ15AHE3/A, it delivers 50 % higher surge power handling and superior thermal dissipation, making it the preferred choice for industrial and automotive deployments requiring long-term reliability under repeated stress.
Availability
SMBJ15CHE3/5B is available at Aetrix Electronics and suitable for automotive ECUs, industrial PLC I/O modules, telecom DC feeder systems, and appliance motor controllers requiring stable component supply across multi-year production cycles.
Supply support for SMBJ15CHE3/5B 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 high-reliability, automotive-qualified, and industry-standard solutions.
The SMBJ series is engineered for robust transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where failure due to voltage surges must be eliminated through proven clamping performance and AEC-Q101 validation.
FAQ
What is the clamping voltage of SMBJ15CHE3/5B at its rated peak pulse current?
The SMBJ15CHE3/5B has a maximum clamping voltage (VC) of 24.4 V at 24.6 A peak pulse current with a 10/1000 µs waveform. This value is measured under standardized test conditions and defines the upper voltage limit imposed on protected circuits during surge events. The SMBJ15CHE3/5B maintains this clamping performance across its full operating temperature range and after repeated surge exposures, provided derating guidelines are followed.
Is SMBJ15CHE3/5B suitable for automotive applications?
Yes, SMBJ15CHE3/5B is AEC-Q101 qualified and manufactured with halogen-free, RoHS-compliant materials - explicitly intended for automotive use. Its −55 to +150 °C junction temperature range, MSL Level 1 reflow compatibility, and validated surge endurance make it appropriate for engine control units, body electronics, and infotainment power supplies. The SMBJ15CHE3/5B meets automotive OEM requirements for transient immunity without requiring additional qualification testing.
How does the "HE3/5B" suffix in SMBJ15CHE3/5B affect its functionality?
"HE3" indicates RoHS-compliant, AEC-Q101-qualified construction; "5B" specifies 13-inch tape-and-reel packaging containing 3200 units. Neither suffix alters electrical or thermal performance - the SMBJ15CHE3/5B shares identical VWM, VBR, VC, PPPM, and reliability characteristics with other HE3-suffixed variants like SMBJ15AHE3/5B. The "C" denotes Vishay's internal revision code and reflects minor process or test updates, not functional changes.
What is the maximum reverse leakage current for SMBJ15CHE3/5B at its stand-off voltage?
At 25 °C, the SMBJ15CHE3/5B exhibits a maximum reverse leakage current (ID) of 1.0 µA when biased at its 15 V stand-off voltage (VWM). This ultra-low leakage ensures minimal power loss in always-on systems and avoids interference with precision analog sensing circuits. Leakage remains within specification up to +125 °C, increasing predictably per datasheet derating curves - critical for thermally demanding under-hood installations.
Can SMBJ15CHE3/5B replace bidirectional TVS diodes in circuit designs?
No - SMBJ15CHE3/5B is strictly unidirectional and must be oriented with cathode toward the protected line. Using it in place of a bidirectional device (e.g., SMBJ15CA) would leave the circuit unprotected against negative-going transients. For bidirectional protection, select the CA-suffixed variant; the SMBJ15CHE3/5B is optimized for single-polarity rail clamping such as 12 V or 24 V DC inputs where polarity is fixed and reverse surges are not expected.
SMBJ15CHE3/5B 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):
- 15V
- Voltage - Breakdown (Min):
- 16.7V
- Voltage - Clamping (Max) @ Ipp:
- 26.9V
- Current - Peak Pulse (10/1000µs):
- 22.3A
- 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)
SMBJ15CHE3/5B FAQ
1.How can I place an order for SMBJ15CHE3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ15CHE3/5B 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 SMBJ15CHE3/5B reliable?
The price and inventory of SMBJ15CHE3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ15CHE3/5B is usually 5 days.
3.What payment methods are accepted for SMBJ15CHE3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ15CHE3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ15CHE3/5B?
SMBJ15CHE3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ15CHE3/5B 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 SMBJ15CHE3/5B?
For technical support, including SMBJ15CHE3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ15CHE3/5B requirements.
6.How does Aetrix verify that SMBJ15CHE3/5B is sourced from the original manufacturer or authorized distributors?
All SMBJ15CHE3/5B 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 SMBJ15CHE3/5B meets industry standards.
7.What is the process for return or replacement of SMBJ15CHE3/5B?
All SMBJ15CHE3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ15CHE3/5B, 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 SMBJ15CHE3/5B part is unused and in its original packaging.
Return procedure for SMBJ15CHE3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ15CHE3/5B Tags
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