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Vishay General Semiconductor - Diodes Division SMBJ15CHE3/52
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- Part No.:
- SMBJ15CHE3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ15CHE3/52.pdf
- Description:
- TVS DIODE 15VWM 26.9VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:7,465
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Product details
Overview
SMBJ15CHE3/52 from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping voltage transients on power and signal lines. It features a 15 V stand-off voltage (VWM), 24.4 V maximum clamping voltage (VC) at 24.6 A peak pulse current (IPPM), and 600 W peak pulse power (PPPM) with 10/1000 µs waveform - used to protect MOSFETs, ICs, and sensor interfaces in industrial power supplies and automotive ECUs.
For engineers reviewing the SMBJ15CHE3/52 datasheet, SMBJ15CHE3/52 pinout, SMBJ15CHE3/52 application, or SMBJ15CHE3/52 equivalent, key selection criteria include its AEC-Q101 qualification, 1.0 µA max reverse leakage at VWM, 16.7–18.5 V breakdown voltage range (VBR), and compatibility with automated SMT placement on 0.2" × 0.2" copper pads.
Technical Context
This TVS diode operates as a unidirectional clamping device with cathode-band polarity marking, leveraging a glass-passivated silicon junction for stable avalanche behavior under transient stress. Its thermal resistance (RθJA = 100 °C/W) and junction temperature limit (TJ max = 150 °C) support reliable operation in ambient temperatures up to +85 °C when mounted per recommended pad layout.
The SMBJ15CHE3/52 delivers fast response time (<1 ps), low incremental surge resistance, and meets MSL Level 1 per J-STD-020 with 260 °C reflow peak. Its 600 W PPPM rating applies under non-repetitive 10/1000 µs pulses at ≤0.01% duty cycle, with derating above TA = 25 °C per published curves.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 15 V - maximum continuous reverse voltage before significant leakage; sets operating margin below clamping threshold |
| VBR (Breakdown Voltage) | 16.7–18.5 V at 1.0 mA - guaranteed avalanche initiation range; ensures predictable turn-on during overvoltage events |
| VC (Clamping Voltage) | 24.4 V at IPPM = 24.6 A - peak voltage seen by protected circuit during 600 W transient; defines worst-case stress level |
| PPPM (Peak Pulse Power) | 600 W with 10/1000 µs waveform - standardized surge energy handling capacity; validated per ANSI/IEEE C62.35 |
| ID (Reverse Leakage) | 1.0 µA max at VWM - minimal standby power loss and noise coupling into sensitive analog/sensor circuits |
| TJ max | +150 °C - enables use in under-hood automotive and high-temperature industrial environments without derating |
| AEC-Q101 Qualified | Yes - certified for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per AEC specification |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, matte tin-plated leads, RoHS-compliant and halogen-free (HE3 suffix). Dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H); cathode indicated by band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal during forward conduction | Connected to lower-potential side of protected line; defines unidirectional current path during clamping |
| Cathode | Current exit terminal during forward conduction; marked with band | Connected to higher-potential side (e.g., VCC rail); determines polarity-sensitive placement on PCB |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Enables robust protection against IEC 61000-4-5 Level 4 surges (4 kV line-to-earth) without degradation |
| AEC-Q101 qualified (HE3 suffix) | Validated for automotive powertrain and body electronics where field failure risk must be minimized |
| Glass passivated chip junction | Ensures long-term stability of VBR and leakage under thermal cycling and humidity exposure |
| MSL Level 1 (260 °C peak) | Supports standard lead-free reflow profiles without moisture-induced popcorning or delamination |
| Low profile SMB package | Reduces board space vs. SMA/SMB alternatives while maintaining 0.2" × 0.2" thermal pad compatibility |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC Digital Input Protection |
|---|---|
Use Scenario: Protecting 12 V supply rails and LIN bus lines from load dump and inductive switching spikes in vehicle door modules and lighting controllers. IC Role / Device Role: Unidirectional clamping TVS placed between VBAT and ground, shunting transients before they reach MCU power pins. Use Value: SMBJ15CHE3/52 clamps to 24.4 V within nanoseconds, preventing latch-up or damage to 3.3 V/5 V logic powered from local LDOs. |
Use Scenario: Safeguarding 24 V digital input channels in programmable logic controllers exposed to relay coil flyback and field wiring surges. IC Role / Device Role: Standoff-clamp TVS connected across input optocoupler terminals to limit voltage to safe levels for internal LED and phototransistor. Use Value: With 1.0 µA leakage at 15 V, SMBJ15CHE3/52 avoids false triggering while clamping 1 kV/0.5 J transients to <25 V. |
| Telecom Power Supply Front-End | Consumer Appliance Motor Driver Protection |
Use Scenario: Shielding DC-DC converter inputs in PoE-powered network switches from Ethernet cable ESD and lightning-induced surges. IC Role / Device Role: Primary-level TVS on 48 V input rail, coordinated with upstream fuse and downstream filter capacitors. Use Value: SMBJ15CHE3/52's 600 W rating handles repetitive 10/1000 µs surges per ITU-T K.21 Basic Level requirements without parameter shift. |
Use Scenario: Suppressing back-EMF spikes from brushed DC motors in washing machines and HVAC blowers connected to microcontroller GPIOs. IC Role / Device Role: Localized TVS on motor driver half-bridge outputs, placed adjacent to gate drivers to minimize loop inductance. Use Value: 24.4 V clamping ensures MOSFETs with 30 V VDS rating operate with >20% margin during 100 A inductive turn-off events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ15A-E3/52 | Commercial-grade (non-AEC-Q101), same VWM/VC/IPPM specs, identical SMB package | Lacks automotive qualification; suitable for consumer/industrial designs not requiring AEC validation | Select when cost sensitivity outweighs automotive reliability requirements |
| SMAJ15AHE3/A | Lower PPPM (400 W), smaller SMA package (DO-214AC), same VWM/VC range | Reduced surge margin; limited to lower-energy transients (e.g., IEC 61000-4-2 ESD only) | Choose for space-constrained layouts where 600 W capability is not required |
Compared with SMBJ15A-E3/52, SMBJ15CHE3/52 adds AEC-Q101 qualification without changing electrical performance; versus SMAJ15AHE3/A, it provides +50% peak pulse power in a slightly larger but thermally superior SMB footprint.
Availability
SMBJ15CHE3/52 is available at Aetrix Electronics and suitable for automotive electronic control units, industrial programmable logic controllers, and telecom power supply front-ends requiring stable component supply and long-term lifecycle assurance.
Supply support for SMBJ15CHE3/52 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, efficiency, and application-specific optimization.
The SMBJ series was developed for high-energy transient suppression in harsh environments, targeting automotive, industrial, and telecom systems where consistent clamping performance and AEC-Q101 compliance are mandatory.
FAQ
What is the clamping voltage of SMBJ15CHE3/52 at its rated peak pulse current?
The SMBJ15CHE3/52 has a maximum clamping voltage (VC) of 24.4 V at its specified peak pulse current (IPPM) of 24.6 A, measured using the standard 10/1000 µs waveform. This value defines the upper voltage limit imposed on protected circuitry during surge events and is guaranteed across the full operating temperature range.
Is SMBJ15CHE3/52 suitable for bidirectional transient protection?
No - SMBJ15CHE3/52 is a unidirectional TVS diode, identified by its cathode band marking and specified breakdown behavior in reverse bias only. For bidirectional protection, Vishay offers the SMBJ15CA variant; using SMBJ15CHE3/52 in bidirectional configurations may result in forward conduction damage during negative transients.
Does SMBJ15CHE3/52 meet automotive qualification standards?
Yes - the "HE3" suffix explicitly denotes AEC-Q101 qualification. SMBJ15CHE3/52 has passed stress tests including high-temperature reverse bias (HTRB), temperature cycling, and ESD per AEC-Q101 Rev D, making it approved for use in automotive powertrain, chassis, and body electronics.
What is the maximum reverse leakage current for SMBJ15CHE3/52 at 15 V?
The SMBJ15CHE3/52 exhibits a maximum reverse leakage current (ID) of 1.0 µA at its 15 V stand-off voltage (VWM) and 25 °C ambient temperature. This low leakage ensures minimal impact on power rail stability and prevents false triggering in high-impedance sensing circuits.
Can SMBJ15CHE3/52 be used in lead-free reflow processes?
Yes - SMBJ15CHE3/52 is rated for MSL Level 1 per J-STD-020 and supports peak reflow temperatures up to 260 °C, fully compatible with standard lead-free soldering profiles. Its matte tin-plated leads comply with J-STD-002 and JESD 22-B102 for reliable wetting and intermetallic formation.
SMBJ15CHE3/52 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):
- 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)
SMBJ15CHE3/52 FAQ
1.How can I place an order for SMBJ15CHE3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ15CHE3/52 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 SMBJ15CHE3/52 reliable?
The price and inventory of SMBJ15CHE3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ15CHE3/52 is usually 5 days.
3.What payment methods are accepted for SMBJ15CHE3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ15CHE3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ15CHE3/52?
SMBJ15CHE3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ15CHE3/52 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 SMBJ15CHE3/52?
For technical support, including SMBJ15CHE3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ15CHE3/52 requirements.
6.How does Aetrix verify that SMBJ15CHE3/52 is sourced from the original manufacturer or authorized distributors?
All SMBJ15CHE3/52 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 SMBJ15CHE3/52 meets industry standards.
7.What is the process for return or replacement of SMBJ15CHE3/52?
All SMBJ15CHE3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ15CHE3/52, 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 SMBJ15CHE3/52 part is unused and in its original packaging.
Return procedure for SMBJ15CHE3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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