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Vishay General Semiconductor - Diodes Division SMCJ54AHM3_A/H
- Part No.:
- SMCJ54AHM3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ54AHM3_A/H.pdf
- Description:
- TVS DIODE 54VWM 87.1VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:3,853
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Product details
Overview
SMCJ54AHM3_A/H from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMC (DO-214AB) package, designed for robust overvoltage protection of sensitive electronics. It features a 54 V standoff voltage (VWM), 60.0–66.3 V breakdown voltage (VBR at 1 mA), 87.1 V maximum clamping voltage (VC) at 17.2 A peak pulse current, and 1500 W peak pulse power rating with 10/1000 µs waveform.
For engineers reviewing the SMCJ54AHM3_A/H datasheet, SMCJ54AHM3_A/H pinout, SMCJ54AHM3_A/H application, or SMCJ54AHM3_A/H equivalent, key selection criteria include clamping performance under surge conditions, AEC-Q101 qualification status, halogen-free RoHS compliance, thermal resistance (RθJA = 75 °C/W), and compatibility with automated SMT placement on standard PCB pad layouts.
Technical Context
The SMCJ54AHM3_A/H operates as a unidirectional avalanche diode, leveraging glass-passivated junction technology for stable, repeatable clamping response. Its low incremental surge resistance and very fast response time (<1 ns) enable effective suppression of transient events induced by inductive switching, ESD, and lightning surges.
Designed for operation across -55 °C to +150 °C junction temperature range, it delivers 6.5 W steady-state power dissipation at 50 °C ambient when mounted on infinite heatsink, and supports 200 A non-repetitive forward surge current (8.3 ms half-sine) - critical for automotive and industrial load-dump protection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 54 V - Maximum continuous reverse operating voltage before clamping begins; defines safe signal line operating margin. |
| VBR (min/max) | 60.0 V / 66.3 V at 1 mA - Confirmed breakdown threshold range; ensures predictable turn-on during transients. |
| VC @ IPPM | 87.1 V at 17.2 A - Clamped voltage under 1500 W 10/1000 µs surge; limits stress on downstream ICs/MOSFETs. |
| PPPM | 1500 W - Peak pulse power handling capacity; supports high-energy transients per IEC 61000-4-5 Level 4. |
| IFSM | 200 A - Single half-sine surge current rating (8.3 ms); validates suitability for automotive load-dump protection. |
| TJ max | +150 °C - Maximum junction temperature; enables reliable operation in under-hood or industrial enclosures. |
| RθJA | 75 °C/W - Thermal resistance junction-to-ambient; informs PCB copper pad sizing and layout for thermal management. |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, halogen-free, RoHS-compliant, MSL Level 1 (260 °C peak reflow). Cathode indicated by band marking on body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry (unidirectional) | Connected to protected circuit ground or low-side reference; completes clamping path during reverse surge. |
| Cathode | Reverse-biased terminal (marked with band) | Connected to protected line (e.g., 54 V rail); conducts avalanche current when VLINE exceeds VBR. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per JESD22 standards. |
| Glass passivated junction | Ensures stable VBR tolerance and long-term parameter stability under thermal and humidity stress. |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients, improving protection margin for 3.3 V/5 V logic interfaces. |
| MSL Level 1 rating | Enables direct placement without baking; compatible with standard lead-free reflow profiles up to 260 °C peak. |
| Matte tin plated leads | Guarantees solderability per J-STD-002 and JESD22-B102; eliminates whisker risk (JESD201 Class 2). |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 54 V battery-fed control modules (e.g., body ECUs, lighting drivers) against ISO 7637-2 load dump pulses. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and chassis ground to clamp surges above 54 V. Use Value: Limits peak voltage to ≤87.1 V during 1500 W transients, preventing damage to 60 V-rated DC-DC converters and microcontrollers. | Use Scenario: Safeguarding analog sensor outputs (e.g., pressure, temperature) in factory automation systems exposed to motor switching noise. IC Role / Device Role / Timing Role: TVS connected across differential signal pair or single-ended output to suppress coupled EFT bursts. Use Value: Sub-1 ns response and 87.1 V clamping prevent latch-up or input-stage damage in precision ADC front-ends. |
| Telecom DC Power Input Protection | Consumer Device USB/Power Port Protection |
Use Scenario: Securing 48–54 V PoE-powered equipment inputs against lightning-induced surges per IEC 61000-4-5. IC Role / Device Role / Timing Role: Primary-level TVS on DC input stage, upstream of DC-DC regulation and hot-swap controllers. Use Value: 1500 W rating and 200 A surge capability meet Level 4 surge immunity requirements without derating. | Use Scenario: Overvoltage hardening of external 54 V auxiliary power inputs on smart home hubs or audio amplifiers. IC Role / Device Role / Timing Role: Standoff-rated TVS on input connector to absorb accidental adapter misconnection or field-induced transients. Use Value: 54 V VWM allows normal operation while clamping >60 V excursions - critical for maintaining system uptime. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ54AHE3/A | Lower PPPM (400 W), smaller SMA package (DO-214AC), higher RθJA (110 °C/W), same VWM/VBR spec. | Suitable only for lower-energy transients; requires tighter thermal design due to reduced power handling. | Select when board space is constrained and surge energy is limited to <400 W. |
| SMCJ54AHE3_A/H | Same electrical specs and SMC package, but RoHS-compliant commercial grade (not halogen-free); lacks AEC-Q101 qualification. | Acceptable for industrial/commercial use where automotive qualification is not required. | Choose when halogen-free content or AEC-Q101 is not mandated, and cost optimization is prioritized. |
Compared with SMAJ54AHE3/A and SMCJ54AHE3_A/H, the SMCJ54AHM3_A/H uniquely combines 1500 W surge capability, halogen-free construction, and AEC-Q101 qualification - making it the only option qualified for automotive under-hood deployment with full 54 V system margin.
Availability
SMCJ54AHM3_A/H is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface hardening, telecom DC input safeguarding, and consumer device auxiliary power port protection requiring stable component supply across production lifecycles.
Supply support for SMCJ54AHM3_A/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, rectifiers, MOSFETs, and protection devices with emphasis on reliability, efficiency, and application-specific performance.
The SMCJ series is part of Vishay's TRANSZORB® TVS platform, engineered specifically for high-energy transient suppression in automotive, industrial, and telecom infrastructure where robustness and AEC-Q101 compliance are mandatory.
FAQ
What is the clamping voltage of the SMCJ54AHM3_A/H under maximum rated surge current?
The SMCJ54AHM3_A/H has a maximum clamping voltage (VC) of 87.1 V at its rated peak pulse current (IPPM) of 17.2 A, measured using a 10/1000 µs waveform. This value is guaranteed per Vishay's datasheet Document Number 88394 and defines the upper voltage limit imposed on protected circuits during worst-case transient events. The SMCJ54AHM3_A/H maintains this clamping performance across its specified operating temperature range.
Is the SMCJ54AHM3_A/H qualified for automotive applications?
Yes, the SMCJ54AHM3_A/H is AEC-Q101 qualified, as confirmed by Vishay's ordering code suffix "HM3" and documentation in the SMCJ5.0A–SMCJ188CA datasheet. It meets rigorous stress tests including temperature cycling, high-temperature reverse bias, and ESD per JESD22 standards. This qualification makes the SMCJ54AHM3_A/H suitable for under-hood and chassis-mounted automotive electronics where reliability under thermal and mechanical stress is critical.
What does the "HM3" suffix indicate in SMCJ54AHM3_A/H?
The "HM3" suffix in SMCJ54AHM3_A/H denotes halogen-free, RoHS-compliant, and AEC-Q101 qualified construction. Per Vishay's ordering information, "HM3" distinguishes it from "HE3" (RoHS-compliant AEC-Q101) and "M3" (halogen-free commercial grade). The "_A/H" further specifies packaging: 7-inch tape-and-reel, 850 units per reel. This coding ensures traceability to material content, qualification level, and logistics configuration for the SMCJ54AHM3_A/H.
How does the SMCJ54AHM3_A/H compare to bidirectional variants like SMCJ54CA?
The SMCJ54AHM3_A/H is unidirectional, meaning it protects only against reverse-polarity transients on a positive rail, with cathode marked for correct orientation. In contrast, SMCJ54CA is bidirectional and symmetrical - suitable for AC lines or differential signals. They share identical VWM, VBR, and PPPM, but the SMCJ54AHM3_A/H offers lower leakage and optimized forward conduction for DC rail protection, whereas SMCJ54CA provides equal clamping in both directions - a functional distinction that dictates circuit topology and layout for the SMCJ54AHM3_A/H.
What is the thermal resistance and recommended mounting for optimal performance of the SMCJ54AHM3_A/H?
The SMCJ54AHM3_A/H has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on minimum recommended 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal. For sustained power dissipation, Vishay recommends maximizing copper area and using internal ground/power planes. Its RθJL is 15 °C/W, indicating efficient heat transfer to PCB leads. Proper pad layout directly impacts derating above 25 °C ambient - critical for maintaining 6.5 W power dissipation capability in the SMCJ54AHM3_A/H.
SMCJ54AHM3_A/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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_A/H FAQ
1.How can I place an order for SMCJ54AHM3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ54AHM3_A/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 SMCJ54AHM3_A/H reliable?
The price and inventory of SMCJ54AHM3_A/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ54AHM3_A/H is usually 5 days.
3.What payment methods are accepted for SMCJ54AHM3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ54AHM3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ54AHM3_A/H?
SMCJ54AHM3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ54AHM3_A/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 SMCJ54AHM3_A/H?
For technical support, including SMCJ54AHM3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ54AHM3_A/H requirements.
6.How does Aetrix verify that SMCJ54AHM3_A/H is sourced from the original manufacturer or authorized distributors?
All SMCJ54AHM3_A/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 SMCJ54AHM3_A/H meets industry standards.
7.What is the process for return or replacement of SMCJ54AHM3_A/H?
All SMCJ54AHM3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ54AHM3_A/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 SMCJ54AHM3_A/H part is unused and in its original packaging.
Return procedure for SMCJ54AHM3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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