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Vishay General Semiconductor - Diodes Division SMBJ54CAHM3_A/I
- Part No.:
- SMBJ54CAHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ54CAHM3_A/I.pdf
- Description:
- TVS DIODE 54VWM 87.1VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:4,298
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Product details
Overview
SMBJ54CAHM3_A/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 54 V standoff voltage (VWM), 600 W peak pulse power (10/1000 µs), 87.1 V maximum clamping voltage at 6.9 A peak pulse current, and operates across -55 °C to +150 °C junction temperature - deployed in industrial sensor interface protection.
For engineers reviewing the SMBJ54CAHM3_A/I datasheet, SMBJ54CAHM3_A/I pinout, SMBJ54CAHM3_A/I application, or SMBJ54CAHM3_A/I equivalent, this page delivers verified electrical parameters, bidirectional clamping behavior, AEC-Q101 qualification status, thermal resistance data, and real-world ESD/lightning surge protection use cases - all confirmed from Vishay's official 88392 document (Rev. 09-Jan-2024).
Technical Context
This device functions as a bidirectional voltage-clamping protector with symmetrical breakdown characteristics: minimum VBR = 60.0 V and maximum VBR = 66.3 V at 1.0 mA test current. Its low incremental surge resistance and fast response time enable effective suppression of transient energy induced by inductive switching or lightning surges.
Thermally, it exhibits RθJA = 100 °C/W and RθJL = 20 °C/W, supporting operation up to 150 °C junction temperature. The halogen-free, RoHS-compliant HM3 suffix confirms compliance with JESD201 Class 2 whisker testing and MSL Level 1 reflow profile (260 °C peak).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 54 V - Maximum continuous reverse operating voltage before clamping begins; defines safe operating margin below breakdown. |
| VBR (Breakdown Voltage) | 60.0 V to 66.3 V at 1.0 mA - Confirmed bidirectional conduction threshold; ensures symmetrical clamping in both polarities. |
| VC (Clamping Voltage) | 87.1 V at IPPM = 6.9 A (10/1000 µs) - Peak voltage seen by protected circuit during worst-case surge; determines downstream component stress. |
| PPPM (Peak Pulse Power) | 600 W - Sustained transient energy absorption capability under standard 10/1000 µs waveform at 0.01% duty cycle. |
| ID (Reverse Leakage) | 1.0 µA max at VWM - Minimal DC loading on signal/power line during normal operation; preserves signal integrity. |
| TJ Range | -55 °C to +150 °C - Enables deployment in automotive engine bays, industrial motor drives, and outdoor telecom equipment. |
| Package | SMB (DO-214AA) - Standardized surface-mount outline with 0.205" x 0.130" footprint; compatible with automated pick-and-place. |
Pinout & Package
Package: SMB (DO-214AA), molded case with matte tin-plated leads, UL 94 V-0 rated compound, polarity-unmarked for bidirectional configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bidirectional terminal pair | No polarity marking; terminals interchangeable - enables placement without orientation check in PCB layout. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Supports robust protection against IEC 61000-4-5 Level 3 (1 kV/2 Ω) surges without degradation. |
| AEC-Q101 qualified (HM3 suffix) | Validated for automotive powertrain and body electronics where reliability under thermal cycling and vibration is critical. |
| Halogen-free & RoHS-compliant | Meets environmental compliance requirements for EU, China RoHS, and JEITA standards without compromising surge performance. |
| MSL Level 1 (260 °C peak) | Enables single-pass reflow assembly without moisture-induced cracking; eliminates bake preconditioning step. |
| Low clamping ratio (VC/VBR ≈ 1.38) | Minimizes overvoltage exposure to downstream ICs - critical for protecting 5 V or 3.3 V logic interfaces. |
Applications
| Industrial Sensor Interface | Automotive Body Control Module |
|---|---|
Use Scenario: Protecting analog output lines (e.g., 4–20 mA current loops) from inductive kickback in factory automation PLCs. IC Role / Device Role / Timing Role: Bidirectional TVS placed across signal and return lines to clamp ±1 kV transients before reaching ADC or op-amp input stages. Use Value: Prevents latch-up or permanent damage to precision signal conditioning circuits while maintaining <1 µA leakage at 54 V operating bias. |
Use Scenario: Safeguarding LIN bus transceivers and microcontroller GPIOs against load dump and jump-start events in door modules. IC Role / Device Role / Timing Role: Primary clamping device on power rail and communication lines; activated within <1 ns of overvoltage onset. Use Value: Ensures functional safety compliance (ISO 16750-2) with 87.1 V clamping ceiling limiting MCU supply rail overshoot during 12 V system surges. |
| Telecom Power Input Stage | Consumer USB-C Port Protection |
Use Scenario: Front-end surge suppression on 48 V PoE-powered equipment inputs exposed to lightning-induced surges. IC Role / Device Role / Timing Role: First-line defense parallel to DC-DC converter input; absorbs repetitive 600 W pulses without derating at 75 °C ambient. Use Value: Maintains 100 °C/W thermal resistance to limit junction rise to <15 K above ambient during sustained surge events. |
Use Scenario: Bidirectional overvoltage clamp on VBUS and CC lines in portable chargers subjected to accidental 24 V adapter misconnection. IC Role / Device Role / Timing Role: Fast-response shunt element that activates before internal USB-C controller resets or fails. Use Value: Clamps to 87.1 V within nanoseconds - well below silicon damage threshold of USB PD controllers rated for 28 V absolute max. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ54CAHE3_A/I | Same electrical specs, but RoHS-compliant (non-halogen-free) and commercial-grade only - lacks AEC-Q101 qualification. | Acceptable for non-automotive industrial or consumer designs where halogen-free requirement is absent. | Select when cost sensitivity outweighs automotive qualification or halogen-free mandate. |
| SMAJ54CAHM3_A/I | Lower PPPM (400 W vs. 600 W); identical VWM, VBR, VC, and package footprint - reduced surge margin. | Suitable for lower-energy threat environments (e.g., IEC 61000-4-4 EFT only), not full IEC 61000-4-5 compliance. | Choose where board space is constrained and surge severity is limited - same PCB layout, no redesign needed. |
Compared with SMBJ54CAHM3_A/I, SMBJ54CAHE3_A/I offers identical clamping performance without AEC-Q101 or halogen-free assurance, while SMAJ54CAHM3_A/I trades 33% peak power headroom for smaller SMA package - enabling compact layouts where 400 W surge immunity suffices.
Availability
SMBJ54CAHM3_A/I is available at Aetrix Electronics and suitable for industrial sensor interfaces, automotive body control modules, and telecom power input stages requiring stable component supply with halogen-free and AEC-Q101-compliant sourcing.
Supply support for SMBJ54CAHM3_A/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 high-reliability, automotive-qualified, and industry-standard solutions.
The SMBJ series targets robust transient suppression in harsh environments; engineered specifically for IEC 61000-4-5 surge immunity and AEC-Q101 automotive deployment - balancing power handling, thermal stability, and manufacturability.
FAQ
What does the "CA" suffix indicate in SMBJ54CAHM3_A/I?
The "CA" suffix denotes a bidirectional configuration - meaning SMBJ54CAHM3_A/I conducts and clamps symmetrically in both forward and reverse directions. This eliminates polarity concerns during PCB placement and supports AC-coupled or differential signal line protection, unlike unidirectional "A" variants which require cathode alignment.
Is SMBJ54CAHM3_A/I qualified for automotive applications?
Yes, SMBJ54CAHM3_A/I carries the HM3 suffix, confirming halogen-free, RoHS-compliant construction and AEC-Q101 qualification per Vishay Document 88392 (Rev. 09-Jan-2024). It is approved for use in automotive body electronics, infotainment power rails, and sensor nodes subject to temperature cycling and mechanical vibration.
What is the maximum clamping voltage of SMBJ54CAHM3_A/I under surge conditions?
The maximum clamping voltage (VC) of SMBJ54CAHM3_A/I is 87.1 V at a peak pulse current (IPPM) of 6.9 A using the standardized 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and defines the upper voltage limit imposed on protected circuitry during worst-case transient events.
How does the HM3 suffix differ from the HE3 suffix in Vishay's SMBJ series?
The HM3 suffix indicates halogen-free, RoHS-compliant, and AEC-Q101-qualified construction, whereas HE3 is RoHS-compliant and AEC-Q101-qualified but not halogen-free. Both meet JESD201 Class 2 whisker testing and MSL Level 1, but HM3 satisfies stricter environmental mandates such as JEITA EG-701.
Can SMBJ54CAHM3_A/I be used in place of a unidirectional SMBJ54A variant?
No - SMBJ54CAHM3_A/I is bidirectional and lacks polarity marking, while SMBJ54A is unidirectional with cathode band identification. Substituting them requires verifying circuit topology: bidirectional use is mandatory for AC signals or floating references; unidirectional is required for DC-biased rails where reverse conduction must be blocked.
SMBJ54CAHM3_A/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:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 54V
- Voltage - Breakdown (Min):
- 60V
- Voltage - Clamping (Max) @ Ipp:
- 87.1V
- Current - Peak Pulse (10/1000µs):
- 6.9A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
SMBJ54CAHM3_A/I FAQ
1.How can I place an order for SMBJ54CAHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ54CAHM3_A/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 SMBJ54CAHM3_A/I reliable?
The price and inventory of SMBJ54CAHM3_A/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ54CAHM3_A/I is usually 5 days.
3.What payment methods are accepted for SMBJ54CAHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ54CAHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ54CAHM3_A/I?
SMBJ54CAHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ54CAHM3_A/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 SMBJ54CAHM3_A/I?
For technical support, including SMBJ54CAHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ54CAHM3_A/I requirements.
6.How does Aetrix verify that SMBJ54CAHM3_A/I is sourced from the original manufacturer or authorized distributors?
All SMBJ54CAHM3_A/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 SMBJ54CAHM3_A/I meets industry standards.
7.What is the process for return or replacement of SMBJ54CAHM3_A/I?
All SMBJ54CAHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ54CAHM3_A/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 SMBJ54CAHM3_A/I part is unused and in its original packaging.
Return procedure for SMBJ54CAHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ54CAHM3_A/I Tags
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DESD3V3E1BL-7B
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Diodes Incorporated
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