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Vishay General Semiconductor - Diodes Division SMCJ54AHM3/I
- Part No.:
- SMCJ54AHM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ54AHM3/I.pdf
- Description:
- TVS DIODE 54VWM 87.1VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:9,920
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Product details
Overview
SMCJ54AHM3/I from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMC (DO-214AB) package, featuring 54 V standoff voltage (VWM), 60.0–66.3 V breakdown voltage (VBR), 1500 W peak pulse power (10/1000 µs), and clamping voltage of 87.1 V at 17.2 A IPPM. It protects MOSFETs, ICs, and sensor signal lines in automotive power systems against inductive switching transients.
For engineers reviewing the SMCJ54AHM3/I datasheet, SMCJ54AHM3/I pinout, SMCJ54AHM3/I application, or SMCJ54AHM3/I equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification status, 1500 W surge capability, thermal resistance (RθJA = 75 °C/W), and halogen-free RoHS compliance per HM3 suffix.
Technical Context
This TVS diode operates as a clamping device in reverse-biased configuration, with fast response time (<1 ps) and low incremental surge resistance to limit transient overvoltage before sensitive downstream components are stressed. Its glass-passivated junction ensures stable VBR tolerance and long-term reliability under repetitive surge events.
The SMCJ54AHM3/I is rated for TJ = –55 °C to +150 °C operation, meets MSL Level 1 per J-STD-020 (260 °C peak reflow), and supports automated placement via matte tin-plated leads compliant with J-STD-002 and JESD 22-B102.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 54 V - maximum continuous reverse operating voltage before clamping initiates |
| VBR min/max | 60.0 V / 66.3 V at IT = 1 mA - defines guaranteed breakdown threshold range for design margining |
| VC @ IPPM | 87.1 V at 17.2 A - clamped voltage during 1500 W 10/1000 µs surge, limiting stress on protected IC |
| PPPM | 1500 W - peak transient energy absorption capacity under standardized waveform |
| TJ max | +150 °C - enables use in under-hood automotive environments without derating below 125 °C ambient |
| RθJA | 75 °C/W - thermal resistance from junction to ambient on standard 8 mm × 8 mm copper pads |
| Package | SMC (DO-214AB) - industry-standard surface-mount outline with cathode band marking |
Pinout & Package
SMCJ54AHM3/I uses the SMC (DO-214AB) package: molded epoxy case with matte tin-plated leads, 0.320" (8.13 mm) length, 0.246" (6.22 mm) width, and 0.126" (3.20 mm) height. Polarity is marked by a cathode band on the body end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side connection point | Connected to ground or low-impedance return path; completes clamping loop during transient |
| Cathode | High-side connection point | Connected to protected line (e.g., 54 V rail or sensor input); reverse-biased during normal operation |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive powertrain and chassis applications requiring zero defect reliability |
| Halogen-free & RoHS-compliant | HM3 suffix confirms compliance with IEC 61249-2-21 and JEDEC J-STD-20E environmental standards |
| Low incremental surge resistance | Enables tighter clamping voltage control and reduced overshoot during high-di/dt events |
| MSL Level 1 rating | Supports lead-free reflow up to 260 °C peak without popcorn or delamination risk |
| Glass passivated junction | Improves long-term stability of VBR and leakage current under temperature cycling and humidity stress |
Applications
| Automotive Power Distribution | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 48 V–60 V DC-DC converter outputs and load-dump circuits in ADAS ECUs. IC Role / Device Role / Timing Role: Unidirectional TVS clamping device placed between power rail and ground to shunt ISO 7637-2 Pulse 5a/b surges. Use Value: Limits transient voltage to ≤87.1 V, preventing damage to downstream PMICs and microcontrollers rated for 65 V absolute max. | Use Scenario: Safeguarding analog front-end inputs of pressure/temperature sensors in motor control modules. IC Role / Device Role / Timing Role: Reverse-biased protection element on signal lines exposed to ESD and cable discharge events. Use Value: Clamps 8 kV HBM ESD pulses within <1 ns while maintaining <1 μA leakage at 54 V, preserving signal integrity. |
| Telecom DC Power Feeds | Consumer Power Adapter Outputs |
Use Scenario: Surge suppression on -48 V telecom rectifier outputs subject to lightning-induced surges. IC Role / Device Role / Timing Role: Primary overvoltage clamp on centralized power bus feeding multiple line cards. Use Value: Absorbs 1500 W peak pulse energy without failure, meeting Telcordia GR-1089-CORE Level 3 requirements. | Use Scenario: Secondary-side overvoltage protection in USB PD 3.1 programmable power supply outputs. IC Role / Device Role / Timing Role: Standoff-rated TVS on regulated 54 V output rail to prevent latch-up during adapter fault conditions. Use Value: Maintains 54 V nominal operation while clamping fault transients to 87.1 V, ensuring downstream GaN FET gate driver safety. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ54AHE3/A | Lower PPPM (400 W), SMA package (smaller footprint, higher RθJA = 110 °C/W) | Suitable only for lower-energy transients; not AEC-Q101 qualified | Select when board space is constrained and surge threat level is limited to IEC 61000-4-5 Level 2 |
| 1.5SMC54A-M3/57T | Same 1500 W rating and SMC package, but commercial-grade (M3) without AEC-Q101 validation | Lacks automotive qualification documentation and extended temperature life testing | Choose for industrial or telecom designs where AEC-Q101 is not mandated |
Compared with SMCJ54AHM3/I, SMAJ54AHE3/A offers smaller size but significantly lower surge handling and no automotive qualification, while 1.5SMC54A-M3/57T matches power and package but omits AEC-Q101 validation-making SMCJ54AHM3/I the sole option for production automotive systems requiring full qualification traceability.
Availability
SMCJ54AHM3/I is available at Aetrix Electronics and suitable for automotive power distribution, industrial sensor interface protection, telecom DC power feeds, and consumer power adapter outputs requiring stable component supply across multi-year production cycles.
Supply support for SMCJ54AHM3/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, TVS devices, and optoelectronics with emphasis on reliability and application-specific performance.
The SMCJ series was developed for high-energy transient suppression in harsh environments, targeting automotive, industrial, and telecom infrastructure where robustness against load dump, ESD, and lightning surges is mandatory.
FAQ
What is the clamping voltage of SMCJ54AHM3/I at its rated peak pulse current?
The SMCJ54AHM3/I has a maximum clamping voltage (VC) of 87.1 V at its rated peak pulse current (IPPM) of 17.2 A under a 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and defines the upper voltage limit imposed on protected circuitry during a full-power transient event. The SMCJ54AHM3/I maintains this clamping performance across its specified operating temperature range.
Is SMCJ54AHM3/I qualified for automotive applications?
Yes, SMCJ54AHM3/I is AEC-Q101 qualified, as confirmed by the HM3 suffix and documentation in Vishay's SMCJ5.0A–SMCJ188CA datasheet (Rev. 09-Jan-2024, Doc. #88394). This qualification covers stress tests including HTGB, AC-H3TRB, TC, and UHAST, validating suitability for automotive powertrain, chassis, and ADAS systems where zero-defect reliability is required.
What does the "HM3" suffix indicate in SMCJ54AHM3/I?
The "HM3" suffix in SMCJ54AHM3/I denotes halogen-free, RoHS-compliant construction with AEC-Q101 qualification. It distinguishes this variant from commercial-grade versions (e.g., M3) and non-halogen-free qualified variants (e.g., HE3). The "I" denotes 13-inch tape-and-reel packaging (3500 units), and the "H" refers to the specific revision code per Vishay's ordering nomenclature.
How does the thermal resistance of SMCJ54AHM3/I affect PCB layout?
The SMCJ54AHM3/I has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal. To maintain TJ ≤ 150 °C at full 1500 W surge, designers must ensure adequate copper area and avoid excessive local heating. Reducing pad size increases RθJA, risking thermal runaway during repeated surges.
Can SMCJ54AHM3/I be used in bidirectional configurations?
No, SMCJ54AHM3/I is unidirectional only, as indicated by the "A" (not "CA") suffix and presence of a cathode band marking. Bidirectional operation requires the CA variant (e.g., SMCJ54CA), which lacks polarity marking and exhibits symmetrical VBR in both directions. Using SMCJ54AHM3/I in bidirectional circuits will result in forward conduction and potential failure on negative transients.
SMCJ54AHM3/I Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 54V
- Voltage - Breakdown (Min):
- 60V
- Voltage - Clamping (Max) @ Ipp:
- 87.1V
- Current - Peak Pulse (10/1000µs):
- 17.2A
- Power - Peak Pulse:
- 1500W (1.5kW)
- 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-214AB (SMC)
SMCJ54AHM3/I FAQ
1.How can I place an order for SMCJ54AHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ54AHM3/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 SMCJ54AHM3/I reliable?
The price and inventory of SMCJ54AHM3/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ54AHM3/I is usually 5 days.
3.What payment methods are accepted for SMCJ54AHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ54AHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ54AHM3/I?
SMCJ54AHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ54AHM3/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 SMCJ54AHM3/I?
For technical support, including SMCJ54AHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ54AHM3/I requirements.
6.How does Aetrix verify that SMCJ54AHM3/I is sourced from the original manufacturer or authorized distributors?
All SMCJ54AHM3/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 SMCJ54AHM3/I meets industry standards.
7.What is the process for return or replacement of SMCJ54AHM3/I?
All SMCJ54AHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ54AHM3/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 SMCJ54AHM3/I part is unused and in its original packaging.
Return procedure for SMCJ54AHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ54AHM3/I Tags
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