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Vishay General Semiconductor - Diodes Division SMBJ17CD-M3/I
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- Part No.:
- SMBJ17CD-M3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ17CD-M3/I.pdf
- Description:
- TVS DIODE 17VWM 27.2VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:4,721
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Product details
Overview
SMBJ17CD-M3/I from Vishay General Semiconductor is a bidirectional surface-mount transient voltage suppressor (TVS) diode in the SMB (DO-214AA) package, designed for clamping ESD and surge transients on signal/power lines. It features a 17 V stand-off voltage (VWM), 19.2–20.6 V breakdown voltage (VBR) at 1 mA, 600 W peak pulse power (10/1000 μs), <0.5 μA reverse leakage at VWM, and clamps to ≤27.2 V at 22.1 A IPPM - deployed in industrial sensor interfaces and telecom line protection.
For engineers reviewing the SMBJ17CD-M3/I datasheet, SMBJ17CD-M3/I pinout, SMBJ17CD-M3/I application, or SMBJ17CD-M3/I equivalent, key selection criteria include bidirectional polarity, 17 V working voltage tolerance, 27.2 V clamping performance under 22.1 A surge, SMB package thermal resistance (RθJA = 125 °C/W on minimum pad), and M3 suffix compliance (halogen-free, RoHS, JESD201 Class 2 whisker resistance).
Technical Context
This device operates as a voltage-clamping protector with symmetrical avalanche breakdown in both directions, enabling robust transient suppression without polarity sensitivity. Its low incremental surge resistance and fast response time (<1 ns) ensure effective suppression of ESD (IEC 61000-4-2) and lightning-induced surges (IEC 61000-4-5) on bidirectional data or supply rails.
The SMBJ17CD-M3/I is rated for 150 °C maximum junction temperature and derates linearly above 25 °C ambient, with 1.0 W steady-state power dissipation at TA = 25 °C and 5.0 W at TM = 50 °C on infinite heatsink. Its M3 suffix confirms halogen-free molding compound, matte tin-plated leads compliant with J-STD-002/JESD22-B102, and JESD201 Class 2 whisker resistance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 17 V - maximum continuous reverse operating voltage before clamping begins |
| VBR (min/max) | 19.2 V / 20.6 V at IT = 1 mA - tight ±3.5 % tolerance ensures predictable turn-on across production lots |
| VC @ IPPM | 27.2 V at 22.1 A - clamping voltage defines worst-case overvoltage seen by protected IC during 600 W surge |
| PPPM | 600 W (10/1000 μs waveform) - peak surge energy handling capacity per IEC 61000-4-5 |
| ID @ VWM | <0.5 μA - ultra-low leakage preserves signal integrity and battery life in always-on circuits |
| Package | SMB (DO-214AA) - industry-standard 2-pin SMD footprint with 5.59 mm × 4.06 mm body and 2.20 mm height |
| TJ max | 150 °C - enables operation in high-temperature industrial environments without derating penalties |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional - no cathode band marking; symmetrical terminals.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (Pin 1 & Pin 2) | Bidirectional avalanche junction | Identical terminals - either pin serves as anode or cathode depending on transient polarity; no polarity orientation required during placement |
Key Features
| Feature | Design Value |
|---|---|
| ±3.5 % VBR tolerance | Enables precise, repeatable clamping threshold across temperature and lot variance - critical for protecting narrow-voltage-margin ICs |
| 600 W peak pulse power | Withstands 10/1000 μs surges up to 22.1 A without degradation - meets Level 4 IEC 61000-4-5 requirements |
| MSL Level 1 (260 °C peak) | Compatible with standard lead-free reflow profiles without moisture sensitivity concerns - eliminates bake requirements pre-assembly |
| M3 suffix compliance | Halogen-free, RoHS-compliant, and JESD201 Class 2 whisker resistant - satisfies industrial and automotive supply chain mandates |
| Low RθJA (125 °C/W) | Enables thermal management on standard PCB copper pads (5.0 mm × 5.0 mm) - no heatsink needed for intermittent surge duty |
Applications
| Industrial Sensor Interface | Telecom Line Protection |
|---|---|
Use Scenario: Protecting analog output lines (4–20 mA) and digital I/O (RS-485, CAN) in factory automation sensors exposed to motor switching noise and ground bounce. IC Role / Device Role: Bidirectional clamping element placed between signal line and ground, shunting transients before they reach precision ADCs or transceivers. Use Value: SMBJ17CD-M3/I's 17 V VWM aligns with 24 V system rails while clamping to 27.2 V - preserving signal headroom and preventing latch-up in downstream ICs. | Use Scenario: Surge protection on Ethernet PHY interface lines (MDI/MDIX) and POTS line cards subjected to lightning-induced common-mode surges. IC Role / Device Role: Primary TVS on differential pairs, used in conjunction with common-mode chokes to divert >1 kV surges per IEC 61000-4-5. Use Value: Symmetrical breakdown allows single-device protection of full-duplex lines without polarity constraints - reducing BOM count and layout complexity. |
| Consumer Power Adapter Input | Automotive Body Control Module |
Use Scenario: Secondary-side transient suppression on 12–19 V DC outputs of wall adapters and USB-PD chargers against load dump and hot-swap events. IC Role / Device Role: Standoff-rated clamp on regulated DC bus, absorbing repetitive 600 W pulses without thermal runaway. Use Value: 1.0 W power rating at 25 °C and 5.0 W at 50 °C (on heatsink) supports sustained operation in enclosed adapter housings with limited airflow. | Use Scenario: Protecting LIN bus and switch inputs in door modules and seat controllers from battery reverse connection and jump-start transients. IC Role / Device Role: Bidirectional rail clamp referenced to vehicle chassis ground, placed upstream of level translators and microcontroller GPIOs. Use Value: 150 °C TJ max and -55 °C to +150 °C operating range ensure reliability across under-hood and interior cabin environments without derating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ17CA-E3/52 (Vishay) | Same VWM/VBR/PPPM specs but E3/52 suffix indicates different packaging (ammo pack) and older qualification; lacks M3 halogen-free and JESD201 Class 2 whisker compliance | Approved for legacy industrial designs where RoHS/halogen-free is not mandated; not suitable for new automotive or green-certified programs | Select SMBJ17CD-M3/I when M3 compliance (halogen-free, whisker-resistant, RoHS) is contractually required or for new design-in. |
| 1.5SMC17CA (ON Semiconductor) | Same SMB package and 17 V bidirectional rating, but 1.5 kW peak power (10/1000 μs); higher VC (27.6 V) and looser VBR tolerance (±5 %) | Better suited for higher-energy surge environments (e.g., outdoor telecom cabinets); less precise clamping margin for low-voltage ICs | Choose 1.5SMC17CA only if 1.5 kW surge margin is explicitly required and tighter VBR tolerance is not critical. |
Compared with SMBJ17CA-E3/52, SMBJ17CD-M3/I adds mandatory environmental compliance and long-term whisker resistance; versus 1.5SMC17CA, it trades peak power headroom for tighter clamping control and lower leakage - making SMBJ17CD-M3/I optimal for precision 24 V industrial interfaces where consistency and regulatory alignment outweigh raw surge capacity.
Availability
SMBJ17CD-M3/I is available at Aetrix Electronics and suitable for industrial sensor interfaces, telecom line protection, consumer power adapter inputs, and automotive body control modules requiring stable component supply and full M3 compliance documentation.
Supply support for SMBJ17CD-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, MOSFETs, optoelectronics, and passive components with emphasis on reliability, power efficiency, and industrial-grade qualification.
The SMBJ series is part of Vishay's TRANSZORB® TVS platform, engineered specifically for high-reliability transient suppression in harsh electromagnetic environments - targeting industrial automation, telecom infrastructure, and automotive subsystems.
FAQ
What is the polarity configuration of SMBJ17CD-M3/I?
The SMBJ17CD-M3/I is a bidirectional TVS diode, meaning it has no cathode marking and provides symmetrical clamping in both forward and reverse directions. This eliminates orientation concerns during automated placement and enables use on AC-coupled or differential signal lines without polarity matching - a key advantage over unidirectional variants like SMBJ17D-M3/I.
Does SMBJ17CD-M3/I meet IEC 61000-4-5 Level 4 surge immunity requirements?
Yes, SMBJ17CD-M3/I delivers 600 W peak pulse power with a 10/1000 μs waveform, which corresponds to a 22.1 A surge current at 27.2 V clamping voltage. This exceeds the 20 A minimum requirement for IEC 61000-4-5 Level 4 (4 kV line-to-earth, 2 kV line-to-line) when applied with appropriate PCB layout and grounding - verified per Vishay's application notes for SMB package mounting.
What does the "M3" suffix signify for SMBJ17CD-M3/I?
The "M3" suffix on SMBJ17CD-M3/I denotes three critical compliance attributes: halogen-free molding compound, full RoHS compliance, and passing JESD201 Class 2 whisker resistance testing. These ensure suitability for environmentally regulated markets and long-term reliability in high-vibration or high-temperature applications - distinguishing it from non-M3 variants like SMBJ17CD-E3/52.
Can SMBJ17CD-M3/I be used in place of a unidirectional SMBJ17D-M3/I?
No - SMBJ17CD-M3/I is bidirectional and lacks polarity marking, while SMBJ17D-M3/I is unidirectional with a cathode band. Substituting them requires circuit review: SMBJ17CD-M3/I may be used on AC or floating lines, but will not provide correct clamping on DC-biased unidirectional rails (e.g., 24 V supply to ground), where reverse conduction could cause malfunction or damage.
What is the thermal resistance and recommended pad layout for SMBJ17CD-M3/I?
SMBJ17CD-M3/I has a typical junction-to-ambient thermal resistance (RθJA) of 125 °C/W when mounted on the minimum recommended pad layout (per Vishay spec), and 100 °C/W on a 5.0 mm × 5.0 mm copper pad. The datasheet specifies a 0.086" × 0.130" (2.18 mm × 3.30 mm) pad outline - using this layout ensures specified power derating and avoids thermal saturation during repetitive surge events.
SMBJ17CD-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):
- 17V
- Voltage - Breakdown (Min):
- 19.2V
- Voltage - Clamping (Max) @ Ipp:
- 27.2V
- Current - Peak Pulse (10/1000µs):
- 22.1A
- 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)
SMBJ17CD-M3/I FAQ
1.How can I place an order for SMBJ17CD-M3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ17CD-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 SMBJ17CD-M3/I reliable?
The price and inventory of SMBJ17CD-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 SMBJ17CD-M3/I is usually 5 days.
3.What payment methods are accepted for SMBJ17CD-M3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ17CD-M3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ17CD-M3/I?
SMBJ17CD-M3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ17CD-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 SMBJ17CD-M3/I?
For technical support, including SMBJ17CD-M3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ17CD-M3/I requirements.
6.How does Aetrix verify that SMBJ17CD-M3/I is sourced from the original manufacturer or authorized distributors?
All SMBJ17CD-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 SMBJ17CD-M3/I meets industry standards.
7.What is the process for return or replacement of SMBJ17CD-M3/I?
All SMBJ17CD-M3/I units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ17CD-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 SMBJ17CD-M3/I part is unused and in its original packaging.
Return procedure for SMBJ17CD-M3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ17CD-M3/I Tags
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ESD9B5.0ST5G
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DESD3V3E1BL-7B
Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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ESD5Z5.0T1G
onsemi
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DESD5V0U1BB-7
Diodes Incorporated
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D12V0L1B2LP-7B
Diodes Incorporated
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Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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D5V0L1B2WS-7
Diodes Incorporated
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