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Vishay General Semiconductor - Diodes Division SMBJ15CD-M3/H
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- Part No.:
- SMBJ15CD-M3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ15CD-M3/H.pdf
- Description:
- TVS DIODE 15VWM 24VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:8,936
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Product details
Overview
SMBJ15CD-M3/H from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping voltage transients on signal and power lines. It features a 15 V stand-off voltage (VWM), 17.0–18.2 V breakdown voltage (VBR) at 1 mA, 600 W peak pulse power (10/1000 μs), and clamps to ≤24.0 V at 25.0 A peak surge current - deployed in industrial sensor interface protection.
For engineers reviewing the SMBJ15CD-M3/H datasheet, SMBJ15CD-M3/H pinout, SMBJ15CD-M3/H application, or SMBJ15CD-M3/H equivalent, key selection criteria include bidirectional clamping capability, ±3.5 % VBR tolerance, low leakage (<0.5 μA at VWM), MSL Level 1 moisture sensitivity, and halogen-free RoHS-compliant construction for high-reliability PCB assembly.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, with identical electrical characteristics in forward and reverse directions. Its silicon avalanche structure enables sub-nanosecond response to ESD and lightning-induced surges, while maintaining low dynamic impedance (≤1.0 Ω typical) during clamping.
The device is rated for continuous operation from –55 °C to +150 °C junction temperature, with thermal resistance of 125 °C/W (junction-to-ambient, mounted on minimum pad layout) and 20 °C/W (junction-to-mount). Power derating begins above 25 °C ambient, reaching zero dissipation at 150 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 15 V - maximum steady-state reverse voltage before significant leakage; defines safe operating margin below clamping threshold |
| VBR min/max | 17.0 V / 18.2 V at 1 mA - tight ±3.5 % tolerance ensures predictable turn-on across production lots |
| VC @ IPPM | 24.0 V at 25.0 A - clamping voltage under 10/1000 μs surge; limits downstream IC stress during transient events |
| PPPM | 600 W - peak pulse power handling per 10/1000 μs waveform; supports IEC 61000-4-5 Level 4 surge immunity |
| ID @ VWM | <0.5 μA - ultra-low reverse leakage preserves signal integrity and battery life in always-on circuits |
| Package | SMB (DO-214AA) - industry-standard surface-mount outline with 5.59 mm × 3.94 mm footprint and 2.20 mm height |
| MSL Level | Level 1 (J-STD-020) - no floor life limitation; supports standard reflow without dry pack or baking |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional configuration with no polarity marking (no cathode band).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient conduction path | Both terminals function identically; conducts surge current in either direction when voltage exceeds VBR |
| Case (body) | Thermal and mechanical interface | Exposed copper pad area transfers heat to PCB; requires minimum 5.0 mm × 5.0 mm copper for rated power dissipation |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or differential signal lines (e.g., RS-485, CAN, USB D+/D−) without polarity concerns |
| ±3.5 % VBR tolerance | Reduces design margin overhead and eliminates need for binning or post-assembly verification in high-volume manufacturing |
| 600 W peak pulse rating | Meets IEC 61000-4-5 4th edition surge test requirements for industrial equipment up to 4 kV line-to-earth |
| Halogen-free, RoHS-compliant M3 suffix | Supports environmental compliance for global markets and eliminates brominated flame retardants in molding compound |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (e.g., ESD >15 kV contact), improving system-level robustness |
Applications
| Industrial Sensor Interface | Automotive Body Control Module |
|---|---|
Use Scenario: Protecting analog voltage outputs (0–10 V) and digital I/O lines of pressure, temperature, and position sensors exposed to load dump and inductive switching noise. IC Role / Device Role / Timing Role: Primary transient clamp placed directly at connector entry point, shunting surge energy before it reaches precision ADC or microcontroller GPIO. Use Value: Limits induced voltage to ≤24.0 V during 1 kA/10/1000 μs surge, preventing latch-up or gate oxide damage in downstream ASICs. |
Use Scenario: Safeguarding LIN bus transceivers and switch inputs in door modules, seat controllers, and lighting nodes against battery reverse connection and jump-start spikes. IC Role / Device Role / Timing Role: Bidirectional overvoltage protector on LIN data line and supply rail, operating within ±18 V common-mode range. Use Value: Maintains signal integrity during 12 V system transients up to 40 V, with <0.5 μA leakage preserving sleep-mode current budget. |
| Telecom Power Feeding | Consumer USB-C Port Protection |
Use Scenario: Shielding PoE-powered devices (e.g., IP cameras, wireless APs) from Ethernet cable-induced surges during lightning events or power cross-talk. IC Role / Device Role / Timing Role: Secondary-level TVS on DC input rails after primary isolation, complementing upstream GDT or MOV protection. Use Value: Clamps 600 W surges to 24.0 V within 1 ns, preventing overvoltage failure of DC/DC converters and PMICs. |
Use Scenario: Guarding USB-C CC and VBUS lines against ESD (IEC 61000-4-2 ±15 kV air/±8 kV contact) and accidental 20 V adapter misconnection. IC Role / Device Role / Timing Role: Fast-response bidirectional clamp on VBUS and CC pins, placed adjacent to connector to minimize trace inductance. Use Value: Achieves <1 ns response time and 24.0 V clamping at 25 A, meeting USB PD 3.1 robustness requirements without degrading signal bandwidth. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ15CA-E3/52 (Vishay) | Same VWM/VBR/PPPM specs; differs in packaging (tape-and-reel vs. bulk), RoHS status (lead-free but not halogen-free), and MSL level (Level 1 vs. Level 1 confirmed) | No functional difference in circuit behavior; suitable where halogen-free requirement is not mandated | Select SMBJ15CA-E3/52 only if M3 suffix compliance (halogen-free, JESD 201 Class 2 whisker resistance) is not required. |
| 1.5SMC15CA (ON Semiconductor) | Identical SMB package and 15 V bidirectional rating; slightly wider VBR tolerance (±5 %), higher max ID (1.0 μA), and lower VC (23.2 V at 25.8 A) | Acceptable for cost-sensitive designs where tighter VBR control and lower leakage are non-critical | Choose 1.5SMC15CA when leakage <0.5 μA and ±3.5 % VBR are not design-critical, and legacy qualification suffices. |
Compared with SMBJ15CD-M3/H, SMBJ15CA-E3/52 offers identical electrical performance but lacks halogen-free certification, while 1.5SMC15CA trades tighter VBR tolerance and lower leakage for broader availability and lower unit cost - making SMBJ15CD-M3/H optimal for automotive and industrial designs requiring full environmental compliance and precise clamping thresholds.
Availability
SMBJ15CD-M3/H is available at Aetrix Electronics and suitable for industrial sensor interfaces, automotive body electronics, and telecom power feeding requiring stable component supply, long-term lifecycle support, and certified halogen-free construction.
Supply support for SMBJ15CD-M3/H 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, power efficiency, and application-specific optimization.
The SMBJ series was engineered for high-energy transient suppression in harsh environments, targeting industrial automation, automotive subsystems, and infrastructure equipment where consistent clamping performance and long-term stability are mandatory.
FAQ
What does the "CD" suffix indicate in SMBJ15CD-M3/H?
The "CD" suffix in SMBJ15CD-M3/H denotes a bidirectional Transient Voltage Suppressor. Unlike unidirectional variants (e.g., SMBJ15D), SMBJ15CD-M3/H provides symmetrical clamping in both voltage polarities - essential for protecting AC-coupled signals, differential buses, or systems where polarity reversal may occur. This eliminates the need for orientation-aware placement during automated assembly.
Is SMBJ15CD-M3/H compatible with lead-free reflow processes?
Yes, SMBJ15CD-M3/H is fully compatible with lead-free reflow soldering. It meets J-STD-020 MSL Level 1 with a maximum peak temperature of 260 °C, and its matte tin-plated leads comply with J-STD-002 and JESD 22-B102 solderability standards. The M3 suffix further confirms halogen-free, RoHS-compliant construction suitable for modern Pb-free assembly lines.
What is the maximum clamping voltage for SMBJ15CD-M3/H under surge conditions?
The maximum clamping voltage (VC) for SMBJ15CD-M3/H is 24.0 V, measured at 25.0 A peak pulse current using a 10/1000 μs waveform. This value represents the upper limit of voltage seen by protected circuitry during worst-case surge events, ensuring downstream components like microcontrollers or transceivers remain within safe operating voltage ranges.
How does SMBJ15CD-M3/H differ from unidirectional SMBJ15D?
SMBJ15CD-M3/H is bidirectional with no cathode marking and identical electrical behavior in both directions, whereas SMBJ15D is unidirectional with a cathode band and conducts only in reverse bias. SMBJ15CD-M3/H is used on AC or floating lines (e.g., RS-485), while SMBJ15D suits DC rails where polarity is fixed. Their VWM, VBR, and PPPM ratings are otherwise matched.
Can SMBJ15CD-M3/H be used in automotive applications?
Yes, SMBJ15CD-M3/H is qualified for automotive use per AEC-Q200 stress testing guidelines when applied within its rated parameters. Its –55 °C to +150 °C operating junction temperature range, MSL Level 1 reflow compatibility, and halogen-free construction meet Tier-1 supplier requirements for body electronics, infotainment interfaces, and sensor modules in passenger and commercial vehicles.
SMBJ15CD-M3/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 15V
- Voltage - Breakdown (Min):
- 17V
- Voltage - Clamping (Max) @ Ipp:
- 24V
- Current - Peak Pulse (10/1000µs):
- 25A
- 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)
SMBJ15CD-M3/H FAQ
1.How can I place an order for SMBJ15CD-M3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ15CD-M3/H 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 SMBJ15CD-M3/H reliable?
The price and inventory of SMBJ15CD-M3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ15CD-M3/H is usually 5 days.
3.What payment methods are accepted for SMBJ15CD-M3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ15CD-M3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ15CD-M3/H?
SMBJ15CD-M3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ15CD-M3/H 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 SMBJ15CD-M3/H?
For technical support, including SMBJ15CD-M3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ15CD-M3/H requirements.
6.How does Aetrix verify that SMBJ15CD-M3/H is sourced from the original manufacturer or authorized distributors?
All SMBJ15CD-M3/H 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 SMBJ15CD-M3/H meets industry standards.
7.What is the process for return or replacement of SMBJ15CD-M3/H?
All SMBJ15CD-M3/H units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ15CD-M3/H, 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 SMBJ15CD-M3/H part is unused and in its original packaging.
Return procedure for SMBJ15CD-M3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ15CD-M3/H Tags
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Diodes Incorporated
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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