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Vishay General Semiconductor - Diodes Division SMBJ15D-M3/H
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- Part No.:
- SMBJ15D-M3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ15D-M3/H.pdf
- Description:
- TVS DIODE 15VWM 24VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:7,251
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Product details
Overview
SMBJ15D-M3/H from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping inductive switching transients and ESD events on power and signal lines. It features a 15 V stand-off voltage (VWM), 17.0–18.2 V breakdown voltage (VBR) at 1.0 mA, 24.0 V maximum clamping voltage (VC) at 25.0 A peak pulse current, and 600 W peak pulse power rating with 10/1000 μs waveform.
For engineers reviewing the SMBJ15D-M3/H datasheet, SMBJ15D-M3/H pinout, SMBJ15D-M3/H application, or SMBJ15D-M3/H equivalent, key selection criteria include unidirectional polarity, ±3.5 % VBR tolerance, low leakage (<0.5 μA at VWM), MSL Level 1 moisture sensitivity, and halogen-free RoHS-compliant construction suitable for automated SMT assembly.
Technical Context
This TVS diode operates as a voltage-clamping protection device in parallel with sensitive circuit nodes, activating when reverse voltage exceeds its breakdown threshold to divert surge current away from downstream components. Its low incremental surge resistance and fast response time ensure effective suppression of transients induced by inductive load switching, ESD, and lightning surges.
The SMBJ15D-M3/H is rated for 150 °C maximum junction temperature, with thermal resistance RθJA = 125 °C/W (on minimum pad layout) and RθJM = 20 °C/W. It delivers 1.0 W steady-state power dissipation at TA = 25 °C and 5.0 W at TM = 50 °C, supporting robust operation in industrial and automotive environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 15 V - Maximum continuous reverse operating voltage before clamping begins; defines safe operating margin for 12 V nominal systems. |
| VBR min/max | 17.0 V / 18.2 V at IT = 1.0 mA - Tight ±3.5 % tolerance ensures predictable turn-on across production lots. |
| VC @ IPPM | 24.0 V at 25.0 A - Clamping voltage during 600 W 10/1000 μs surge; limits stress on protected ICs or MOSFETs. |
| ID @ VWM | <0.5 μA - Ultra-low leakage preserves battery life and avoids false triggering in high-impedance sensor circuits. |
| PPPM | 600 W - Peak pulse power handling per 10/1000 μs waveform; supports IEC 61000-4-5 Level 3 surge immunity. |
| TJ max | 150 °C - Enables reliable operation in under-hood automotive or industrial control cabinet environments. |
| Package | SMB (DO-214AA) - Standardized surface-mount outline with 5.59 mm × 4.06 mm footprint and 2.20 mm height for high-density PCB layouts. |
Pinout & Package
Package: SMB (DO-214AA), unidirectional configuration with cathode band marking on one end. Matte tin-plated leads meet J-STD-002 solderability and JESD 201 Class 2 whisker resistance requirements.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side connection to ground or return path | Connected to system ground plane; forms current return path during clamping event. |
| Cathode | High-side connection to protected line | Marked with band; connects to input/power/signal line requiring overvoltage protection. |
Key Features
| Feature | Design Value |
|---|---|
| ±3.5 % VBR tolerance | Enables precise clamping threshold alignment across batches without design margin inflation. |
| 600 W peak pulse power (10/1000 μs) | Meets IEC 61000-4-5 surge immunity requirements for industrial and telecom equipment. |
| MSL Level 1 (260 °C peak reflow) | Supports single-pass lead-free reflow without preconditioning or baking. |
| Halogen-free, RoHS-compliant, industrial grade | Complies with environmental regulations and meets extended temperature reliability standards. |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (e.g., ESD, relay bounce). |
Applications
| Automotive Power Line Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V power rails in engine control units (ECUs) against load dump and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery feed and LDO input to clamp transients above 15 V. Use Value: Prevents latch-up or destruction of downstream voltage regulators and microcontrollers during ISO 7637-2 Pulse 5a events. |
Use Scenario: Safeguarding analog output lines (e.g., 4–20 mA current loops) in PLC I/O modules from field wiring surges. IC Role / Device Role / Timing Role: Parallel-connected TVS on transmitter output to limit voltage excursion during cable ESD or inductive kickback. Use Value: Maintains signal integrity and prevents damage to precision op-amps and DACs while adding <0.5 μA leakage at 12 V. |
| Telecom DC Power Input Protection | Consumer USB Port ESD Suppression |
Use Scenario: Securing -48 V DC input of telecom base station power supplies against lightning-induced surges. IC Role / Device Role / Timing Role: Unidirectional TVS on primary side of DC/DC converter, oriented to clamp negative-going transients. Use Value: Withstands 600 W surges per IEC 61000-4-5 while maintaining <24 V clamping to protect front-end rectifiers and controllers. |
Use Scenario: Adding secondary-level ESD protection on VBUS line of USB 2.0 host ports in smart home hubs. IC Role / Device Role / Timing Role: Standoff-rated TVS placed after primary fuse to absorb contact discharge per IEC 61000-4-2 Level 4 (±15 kV air). Use Value: Delivers sub-25 V clamping at 25 A with negligible capacitance impact on 480 Mbps data integrity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ15A-M3/H | Bidirectional variant with same VWM (15 V) but symmetric clamping in both polarities; VBR min/max = 17.0–18.2 V (same), VC = 24.0 V (same). | Required where AC-coupled or dual-polarity signal lines (e.g., RS-485, CAN bus) need protection without polarity assumptions. | Select SMBJ15A-M3/H only if bidirectional clamping is needed; SMBJ15D-M3/H is optimal for DC power rails with defined polarity. |
| SMCJ15D-E3/57T | Same VWM/VBR/VC specs but in larger SMC (DO-214AB) package; higher thermal mass enables 1.5 W PD at TA = 25 °C vs. 1.0 W for SMBJ15D-M3/H. | Suitable for high-power or thermally constrained designs where board space allows larger footprint and enhanced heat dissipation. | Choose SMCJ15D-E3/57T when ambient temperature exceeds 70 °C or when >1.0 W steady-state dissipation is required; otherwise SMBJ15D-M3/H offers better density. |
Compared with SMBJ15A-M3/H, the SMBJ15D-M3/H provides unidirectional protection optimized for DC power lines, while SMCJ15D-E3/57T trades smaller size for higher thermal capability-making SMBJ15D-M3/H ideal for space-constrained 12 V automotive or industrial PCBs needing precise 15 V standoff.
Availability
SMBJ15D-M3/H is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface hardening, and telecom DC input surge suppression requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for SMBJ15D-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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and application-specific performance.
The SMBJ series is part of Vishay's TRANSZORB® TVS portfolio, engineered for high-energy transient suppression in harsh environments including automotive, industrial automation, and telecommunications infrastructure.
FAQ
What is the polarity configuration of SMBJ15D-M3/H?
The SMBJ15D-M3/H is a unidirectional transient voltage suppressor diode, meaning it conducts only in reverse bias above its breakdown voltage. The cathode is marked by a band on the SMB package body, and it must be connected toward the protected line with anode grounded. This configuration ensures clamping action only on positive-going transients relative to ground.
Does SMBJ15D-M3/H meet automotive qualification standards?
The SMBJ15D-M3/H is not AEC-Q200 qualified as a standalone component, but it is widely used in automotive applications such as ECUs and body control modules due to its 150 °C TJ max, MSL Level 1 reflow compatibility, and proven performance against ISO 7637-2 Pulse 1, 2a, 3a/b, and 5a. System-level qualification remains the responsibility of the end designer.
What is the maximum clamping voltage of SMBJ15D-M3/H under surge conditions?
The SMBJ15D-M3/H has a maximum clamping voltage (VC) of 24.0 V at 25.0 A peak pulse current (IPPM), measured using the standard 10/1000 μs double-exponential waveform. This value is guaranteed across the full operating temperature range and ensures downstream components see no more than 24.0 V during a 600 W transient event.
How does the M3/H suffix affect SMBJ15D-M3/H specifications?
The "M3" suffix denotes halogen-free, RoHS-compliant, industrial-grade construction with matte tin-plated leads meeting J-STD-002 and JESD 201 Class 2 whisker resistance. The "H" indicates packaging in 7″ diameter plastic tape and reel with 750 units per reel-no electrical or thermal specification changes result from this suffix.
Can SMBJ15D-M3/H be used for bidirectional signal line protection?
No-SMBJ15D-M3/H is strictly unidirectional and unsuitable for AC or bidirectional signal lines like RS-485 or CAN. For those applications, use the bidirectional variant SMBJ15A-M3/H, which provides symmetrical clamping in both directions and shares identical VWM, VBR, and VC ratings but lacks polarity marking.
SMBJ15D-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:
- 1
- Bidirectional Channels:
- -
- 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)
SMBJ15D-M3/H FAQ
1.How can I place an order for SMBJ15D-M3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ15D-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 SMBJ15D-M3/H reliable?
The price and inventory of SMBJ15D-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 SMBJ15D-M3/H is usually 5 days.
3.What payment methods are accepted for SMBJ15D-M3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ15D-M3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ15D-M3/H?
SMBJ15D-M3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ15D-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 SMBJ15D-M3/H?
For technical support, including SMBJ15D-M3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ15D-M3/H requirements.
6.How does Aetrix verify that SMBJ15D-M3/H is sourced from the original manufacturer or authorized distributors?
All SMBJ15D-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 SMBJ15D-M3/H meets industry standards.
7.What is the process for return or replacement of SMBJ15D-M3/H?
All SMBJ15D-M3/H units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ15D-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 SMBJ15D-M3/H part is unused and in its original packaging.
Return procedure for SMBJ15D-M3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ15D-M3/H Tags
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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