My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SMBJ14CD-M3/I
;;2.jpg)
- Part No.:
- SMBJ14CD-M3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ14CD-M3/I.pdf
- Description:
- TVS DIODE 14VWM 22.9VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,882
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMBJ14CD-M3/I from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed for robust overvoltage protection on signal and power lines. It features a 14 V stand-off voltage (VWM), 15.8–17.0 V breakdown voltage (VBR) at 1 mA, 22.9 V clamping voltage (VC) at 26.2 A peak pulse current, and 600 W peak pulse power rating with 10/1000 μs waveform.
For engineers reviewing the SMBJ14CD-M3/I datasheet, SMBJ14CD-M3/I pinout, SMBJ14CD-M3/I application, or SMBJ14CD-M3/I equivalent, this device is selected for high-reliability ESD and surge protection in industrial sensor interfaces, automotive body electronics, and telecom line cards where tight VBR tolerance (±3.5 %), low leakage (<0.5 μA at VWM), and MSL Level 1 reflow compatibility are critical.
Technical Context
This bidirectional TVS operates symmetrically in both polarities, enabling protection of AC-coupled or differential signal paths without polarity constraints. Its silicon avalanche structure delivers sub-nanosecond response time and low dynamic impedance, ensuring effective clamping during fast transients such as IEC 61000-4-2 ESD (±30 kV contact) and IEC 61000-4-5 surge events.
The device is rated for continuous operation up to TJ = 150 °C and exhibits thermal resistance RθJA = 125 °C/W on minimum recommended pad layout. Its halogen-free, RoHS-compliant M3 suffix confirms compliance with JESD 201 Class 2 whisker testing and industrial-grade reliability requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 14 V - maximum reverse stand-off voltage before significant conduction begins; defines safe operating range for protected circuitry |
| VBR min/max | 15.8 V / 17.0 V at IT = 1 mA - tight ±3.5 % tolerance ensures predictable turn-on across production lots |
| VC @ IPPM | 22.9 V at 26.2 A - clamping voltage under 10/1000 μs surge; limits stress on downstream ICs during transient events |
| PPPM | 600 W - peak pulse power handling capability per 10/1000 μs waveform; supports IEC 61000-4-5 Level 3/4 surge immunity |
| ID @ VWM | <0.5 μA - ultra-low reverse leakage preserves signal integrity and battery life in always-on systems |
| TJ max | +150 °C - extended junction temperature rating enables use in under-hood automotive and industrial environments |
| Package | SMB (DO-214AA) - surface-mount package with 5.59 mm × 4.06 mm footprint; optimized for automated placement and reflow |
Pinout & Package
Two-terminal bidirectional device in SMB (DO-214AA) package; no polarity marking required. Terminals are matte tin-plated leads, solderable per J-STD-002 and JESD 22-B102, with M3 suffix meeting JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient conduction path | Identical electrical behavior in either direction; connects across protected line and return (e.g., RS-485 A/B, USB D+/D−, CAN H/L) |
| Cathode band (absent) | Polarity indicator | Not present on bidirectional variants-confirms symmetrical construction and eliminates orientation errors during assembly |
Key Features
| Feature | Design Value |
|---|---|
| ±3.5 % VBR tolerance | Enables precise coordination with system-level overvoltage thresholds and reduces design margin uncertainty |
| 600 W PPPM (10/1000 μs) | Supports robust protection against lightning-induced surges and inductive switching transients in industrial control cabinets |
| MSL Level 1 (260 °C peak) | Allows single-pass lead-free reflow without moisture sensitivity concerns-no baking required prior to assembly |
| <0.5 μA ID at VWM | Minimizes standby power loss and prevents false triggering in high-impedance sensor bias networks |
| Halogen-free, RoHS, JESD 201 Class 2 | Meets automotive and industrial environmental compliance mandates while ensuring long-term interconnect reliability |
Applications
| Industrial Sensor Interface | Automotive Body Control Module |
|---|---|
Use Scenario: Protecting analog output lines (4–20 mA) and digital I/O (CAN, LIN) in factory automation sensors exposed to motor drive noise and relay coil kickback. IC Role / Device Role / Timing Role: Bidirectional TVS placed across signal and ground to clamp fast-rising transients before they reach precision ADCs or microcontroller GPIOs. Use Value: Prevents latch-up and parametric drift in signal conditioning circuits by limiting transient voltage to ≤22.9 V during 26.2 A surges. | Use Scenario: Safeguarding LIN bus transceivers and door module microcontrollers against load dump and jump-start induced spikes in 12 V vehicle networks. IC Role / Device Role / Timing Role: Primary overvoltage clamp on LIN data line, positioned between connector and transceiver to absorb energy before it reaches sensitive PHY layer. Use Value: Maintains communication integrity during ISO 7637-2 Pulse 1/2a/5a events by clamping within 1 ns and sustaining 600 W peak power without degradation. |
| Telecom Line Card Protection | Consumer USB Port ESD Guard |
Use Scenario: Shielding Ethernet PHY magnetics secondary windings and PoE detection circuitry from induced surges on outdoor-facing DSL or GPON ports. IC Role / Device Role / Timing Role: Secondary-side TVS on isolated data lines, coordinated with primary-side GDTs to form multi-stage protection architecture. Use Value: Limits let-through voltage to <25 V during 10/1000 μs surges, preserving isolation barrier integrity and preventing damage to Ethernet MAC controllers. | Use Scenario: Front-line ESD suppression on USB 2.0 D+ and D− lines in portable audio devices and smart home hubs subjected to repeated human-body-model discharges. IC Role / Device Role / Timing Role: Low-capacitance bidirectional clamp directly at USB connector, shunting >8 kV HBM ESD pulses away from USB transceiver ESD diodes. Use Value: Achieves pass/fail compliance with IEC 61000-4-2 Level 4 (±15 kV air, ±8 kV contact) without degrading signal rise time due to low dynamic impedance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ14CA-E3/52 (Vishay) | Same VWM/VBR/VC specs; differs only in packaging (tape-and-reel quantity and reel diameter) and M3 vs. standard suffix | No functional difference; identical electrical and thermal performance; same SMB package and MSL rating | Select SMBJ14CD-M3/I when requiring halogen-free, JESD 201 Class 2 whisker-tested industrial-grade supply chain traceability |
| 1.5SMC14CA (ON Semiconductor) | Same VWM (14 V), but wider VBR tolerance (±5 %); higher RθJA (150 °C/W); different package (SMC/DO-214AB, larger footprint) | Less precise clamping onset; lower power density; requires PCB layout revision due to 7.11 mm × 6.22 mm SMC outline | Choose only if legacy SMC footprint is fixed and tighter VBR tolerance is not required for system coordination |
Compared with SMBJ14CA-E3/52, SMBJ14CD-M3/I offers verified industrial-grade whisker resistance and halogen-free compliance; versus 1.5SMC14CA, it delivers superior thermal performance, smaller SMB footprint, and tighter breakdown control-critical for space-constrained, high-reliability designs.
Availability
SMBJ14CD-M3/I is available at Aetrix Electronics and suitable for industrial sensor interfaces, automotive body electronics, and telecom line card protection requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for SMBJ14CD-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, efficiency, and application-specific optimization.
The SMBJ series is engineered for high-energy transient suppression in harsh environments, targeting automotive, industrial, and telecom applications where consistent clamping performance and long-term stability under thermal cycling are mandatory.
FAQ
What does the "CD" suffix indicate in SMBJ14CD-M3/I?
The "CD" suffix in SMBJ14CD-M3/I denotes a bidirectional configuration, meaning the device provides symmetrical transient suppression in both polarities-ideal for protecting AC-coupled signals like RS-485, CAN, or USB without polarity constraints. This differs from unidirectional "D" variants that require correct cathode orientation relative to ground.
Is SMBJ14CD-M3/I suitable for IEC 61000-4-5 surge testing?
Yes, SMBJ14CD-M3/I is rated for 600 W peak pulse power with a 10/1000 μs waveform, making it suitable for Level 3 (1 kV line-to-earth, 2 kV line-to-line) and Level 4 (2 kV line-to-earth, 4 kV line-to-line) IEC 61000-4-5 surge immunity when applied with appropriate PCB layout and coordination with upstream protection elements.
What is the maximum clamping voltage of SMBJ14CD-M3/I under surge conditions?
The maximum clamping voltage VC of SMBJ14CD-M3/I is 22.9 V at 26.2 A peak pulse current (IPPM) with a 10/1000 μs waveform. This value represents the upper limit of voltage seen by protected circuitry during worst-case surge events and is confirmed in the Vishay datasheet Document Number 87606.
Does SMBJ14CD-M3/I require special handling during reflow soldering?
No special handling is required: SMBJ14CD-M3/I meets MSL Level 1 per J-STD-020 with a maximum peak reflow temperature of 260 °C, allowing standard lead-free reflow profiles without pre-baking. Its M3 suffix further guarantees JESD 201 Class 2 whisker resistance for long-term interconnect reliability.
How does the VBR tolerance of SMBJ14CD-M3/I impact system-level protection design?
The ±3.5 % VBR tolerance of SMBJ14CD-M3/I (15.8–17.0 V) enables tighter coordination with downstream overvoltage lockout thresholds and reduces design margin uncertainty. This precision allows engineers to minimize voltage headroom between clamping level and IC absolute maximum ratings-especially critical in 12 V automotive and industrial systems where headroom is constrained.
SMBJ14CD-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):
- 14V
- Voltage - Breakdown (Min):
- 15.8V
- Voltage - Clamping (Max) @ Ipp:
- 22.9V
- Current - Peak Pulse (10/1000µs):
- 26.2A
- 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)
SMBJ14CD-M3/I FAQ
1.How can I place an order for SMBJ14CD-M3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ14CD-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 SMBJ14CD-M3/I reliable?
The price and inventory of SMBJ14CD-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 SMBJ14CD-M3/I is usually 5 days.
3.What payment methods are accepted for SMBJ14CD-M3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ14CD-M3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ14CD-M3/I?
SMBJ14CD-M3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ14CD-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 SMBJ14CD-M3/I?
For technical support, including SMBJ14CD-M3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ14CD-M3/I requirements.
6.How does Aetrix verify that SMBJ14CD-M3/I is sourced from the original manufacturer or authorized distributors?
All SMBJ14CD-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 SMBJ14CD-M3/I meets industry standards.
7.What is the process for return or replacement of SMBJ14CD-M3/I?
All SMBJ14CD-M3/I units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ14CD-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 SMBJ14CD-M3/I part is unused and in its original packaging.
Return procedure for SMBJ14CD-M3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ14CD-M3/I Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
Tech Hub
Comparator circuit design covering voltage thresholds, input limits, open-collector outputs, LM393 wiring, op-amp differences, hysteresis, timing, window detection and practical fault diagnosis.
Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
