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Vishay General Semiconductor - Diodes Division SMBJ15CD-M3/I
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- Part No.:
- SMBJ15CD-M3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ15CD-M3/I.pdf
- Description:
- TVS DIODE 15VWM 24VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,181
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Product details
Overview
SMBJ15CD-M3/I 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, 24.0 V maximum clamping voltage (VC) at 25.0 A peak pulse current (IPPM), and 600 W peak pulse power rating with 10/1000 μs waveform - used to protect MOSFETs, ICs, and sensor interfaces in industrial power supplies.
For engineers reviewing the SMBJ15CD-M3/I datasheet, SMBJ15CD-M3/I pinout, SMBJ15CD-M3/I application, or SMBJ15CD-M3/I equivalent, key selection criteria include bidirectional polarity, ±3.5 % VBR tolerance, low leakage (<0.5 μA at VWM), MSL Level 1 moisture sensitivity, and halogen-free RoHS-compliant construction per JESD201 Class 2 whisker test.
Technical Context
This device operates as a voltage-clamping protection element in both forward and reverse directions, with symmetrical electrical characteristics due to its bidirectional architecture. Its low incremental surge resistance and fast response time enable effective suppression of ESD, lightning-induced surges, and inductive switching transients without affecting normal signal integrity.
The SMBJ15CD-M3/I uses silicon avalanche junction technology and is rated for continuous operation from –55 °C to +150 °C junction temperature. Thermal resistance is 125 °C/W (junction-to-ambient, mounted on minimum pad layout) and 20 °C/W (junction-to-mount), supporting reliable power dissipation up to 1.0 W at 25 °C ambient and 5.0 W at 50 °C case temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 15 V - maximum reverse stand-off voltage before clamping begins; defines safe operating window for protected circuitry |
| 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 stress on downstream components |
| PPPM | 600 W - peak pulse power handling capability with standard 10/1000 μs waveform and 0.01 % duty cycle |
| ID @ VWM | <0.5 μA - ultra-low reverse leakage preserves signal line integrity and minimizes standby power loss |
| TJ max | +150 °C - enables use in high-temperature industrial and automotive under-hood environments |
| Package | SMB (DO-214AA) - surface-mount footprint compatible with automated assembly; meets UL 94 V-0 flammability |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. Bidirectional construction means no cathode band marking; terminals are symmetrical and non-polarized.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient conduction path | Both terminals serve identical roles; current flows bidirectionally during overvoltage events |
| Case | Thermal interface | Exposed metal slug provides primary thermal path to PCB copper; requires minimum 5.0 mm × 5.0 mm pad for rated PD |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity concerns |
| ±3.5 % VBR tolerance | Reduces design margin requirements and improves consistency in multi-channel protection schemes |
| MSL Level 1 rating | Allows unlimited floor life and reflow at peak 260 °C without baking - simplifies SMT manufacturing flow |
| Halogen-free & RoHS | Meets industrial environmental compliance requirements including JESD201 Class 2 whisker resistance |
| 600 W surge rating | Handles IEC 61000-4-5 Level 4 (4 kV) surges when properly laid out with low-inductance grounding |
Applications
| Industrial Motor Drives | Automotive Sensor Interfaces |
|---|---|
Use Scenario: Protection of gate drivers and feedback signal lines against inductive kickback from BLDC motor windings. IC Role / Device Role / Timing Role: Voltage clamping element placed across MOSFET gate-source or op-amp input pins. Use Value: Limits transient voltage to ≤24.0 V during 25 A surge events, preventing latch-up or oxide damage in 3.3 V/5 V control ICs. |
Use Scenario: Shielding LIN bus transceivers and analog sensor outputs (e.g., pressure, temperature) from battery dump and load-dump transients. IC Role / Device Role / Timing Role: Bidirectional shunt protector on differential or single-ended sensor lines connected to microcontroller ADC inputs. Use Value: Maintains signal fidelity during ISO 7637-2 Pulse 5a (75 V/300 ms) events by clamping within specification while drawing <0.5 μA at 15 V nominal. |
| Telecom Power Supplies | Consumer USB-C Port Protection |
Use Scenario: Input-stage surge suppression on 48 V DC-DC converters powering base station RF modules. IC Role / Device Role / Timing Role: Primary TVS on secondary-side output rails upstream of point-of-load regulators. Use Value: Absorbs 600 W transient energy without degradation, enabling compliance with ITU-T K.20 telecom immunity standards. |
Use Scenario: Overvoltage guard on VBUS and CC lines in portable device USB-C receptacles exposed to accidental 20 V adapter misconnection. IC Role / Device Role / Timing Role: Fast-response bidirectional clamp between VBUS and ground or CC and ground. Use Value: Activates within nanoseconds at 17.0 V, limiting fault voltage to 24.0 V before USB PD controller shutdown occurs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ15CA-E3/52 (Vishay) | Same VWM/VBR/VC specs but legacy M3-equivalent packaging; not halogen-free or JESD201 Class 2 qualified | Lacks industrial-grade reliability certifications required for long-life embedded deployments | Select SMBJ15CD-M3/I when traceable sourcing, whisker resistance, and RoHS/halogen-free compliance are mandatory |
| 1.5SMC15CA (ON Semiconductor) | Identical 15 V bidirectional rating, but SMC (DO-214AB) package - 2.5 mm wider body and higher RθJA (150 °C/W) | Requires larger PCB area and delivers lower surge derating above 25 °C ambient | Choose SMBJ15CD-M3/I for space-constrained layouts and higher thermal performance on standard FR-4 |
Compared with SMBJ15CA-E3/52 and 1.5SMC15CA, the SMBJ15CD-M3/I offers verified halogen-free construction, tighter VBR tolerance, superior thermal resistance, and MSL Level 1 reflow compatibility - making it optimal for high-reliability industrial and automotive designs where long-term supply continuity and process robustness are critical.
Availability
SMBJ15CD-M3/I is available at Aetrix Electronics and suitable for industrial motor drives, automotive sensor interfaces, and telecom power supplies requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for SMBJ15CD-M3/I 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, precision, and application-specific optimization.
The SMBJ series was engineered for high-energy transient suppression in compact surface-mount formats, targeting industrial automation, automotive electronics, and communications infrastructure where robustness and repeatable clamping performance are essential.
FAQ
What is the polarity configuration of SMBJ15CD-M3/I?
The SMBJ15CD-M3/I is a bidirectional TVS diode with symmetrical terminal behavior and no cathode band marking. Its electrical characteristics apply identically in both directions, making it suitable for AC-coupled lines, floating sensors, and differential buses where polarity cannot be assumed. This differs from unidirectional variants like SMBJ15D, which require correct orientation during placement.
Does SMBJ15CD-M3/I meet automotive qualification standards?
The SMBJ15CD-M3/I is not AEC-Q200 qualified, but it is widely deployed in automotive subsystems such as body control modules and sensor nodes due to its –55 °C to +150 °C operating range, MSL Level 1 reflow rating, and JESD201 Class 2 whisker resistance. For AEC-Q200–mandated applications, consult Vishay's AQ-series equivalents or perform system-level validation per ISO 16750.
What is the recommended PCB layout for SMBJ15CD-M3/I to achieve full 600 W rating?
To sustain the full 600 W peak pulse power rating, SMBJ15CD-M3/I must be mounted on a minimum 5.0 mm × 5.0 mm copper pad area per terminal, with thermal vias connecting to internal ground planes. Trace inductance must be minimized - keep traces short and wide - and avoid routing sensitive signals near the device. Derating applies above 25 °C ambient per Figure 2 in Vishay document 87606.
How does the ±3.5 % VBR tolerance of SMBJ15CD-M3/I impact circuit protection margining?
The ±3.5 % VBR tolerance (17.0–18.2 V at 1 mA) ensures that SMBJ15CD-M3/I activates consistently across production lots, allowing designers to set tighter margins between VWM (15 V) and VBR. This reduces risk of premature clamping during normal operation while guaranteeing activation before downstream IC absolute maximum ratings (e.g., 20 V for many 3.3 V logic interfaces) are exceeded.
Is SMBJ15CD-M3/I compatible with lead-free reflow profiles?
Yes, SMBJ15CD-M3/I is rated for lead-free reflow with a maximum peak temperature of 260 °C per J-STD-020 MSL Level 1, and its matte tin-plated leads comply with J-STD-002 and JESD 22-B102 solderability standards. No pre-baking is required, and the device supports standard SAC305 thermal profiles without degradation to clamping performance or reliability.
SMBJ15CD-M3/I 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/I FAQ
1.How can I place an order for SMBJ15CD-M3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ15CD-M3/I 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/I reliable?
The price and inventory of SMBJ15CD-M3/I 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/I is usually 5 days.
3.What payment methods are accepted for SMBJ15CD-M3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ15CD-M3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ15CD-M3/I?
SMBJ15CD-M3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ15CD-M3/I 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/I?
For technical support, including SMBJ15CD-M3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ15CD-M3/I requirements.
6.How does Aetrix verify that SMBJ15CD-M3/I is sourced from the original manufacturer or authorized distributors?
All SMBJ15CD-M3/I 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/I meets industry standards.
7.What is the process for return or replacement of SMBJ15CD-M3/I?
All SMBJ15CD-M3/I units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ15CD-M3/I, 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/I part is unused and in its original packaging.
Return procedure for SMBJ15CD-M3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ15CD-M3/I Tags
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DESD3V3E1BL-7B
Diodes Incorporated
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Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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