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Vishay General Semiconductor - Diodes Division SMCJ54CAHM3_A/H
- Part No.:
- SMCJ54CAHM3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ54CAHM3_A/H.pdf
- Description:
- TVS DIODE 54VWM 87.1VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:9,585
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Product details
Overview
SMCJ54CAHM3_A/H from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMC (DO-214AB) package, designed for high-energy surge protection. It features a 54 V standoff voltage (VWM), 60.0–66.3 V breakdown voltage (VBR) at 1 mA, 1500 W peak pulse power (10/1000 µs), and clamps transients to ≤87.1 V at 17.2 A peak pulse current - deployed on power rails and signal lines in automotive ECUs and industrial motor drives.
For engineers reviewing the SMCJ54CAHM3_A/H datasheet, SMCJ54CAHM3_A/H pinout, SMCJ54CAHM3_A/H application, or SMCJ54CAHM3_A/H equivalent, this page delivers verified electrical specs, AEC-Q101 qualification status, thermal resistance (RθJA = 75 °C/W), junction temperature range (−55 to +150 °C), and halogen-free RoHS-compliant construction per JESD201 Class 2 whisker test.
Technical Context
This bidirectional TVS operates symmetrically in both polarities, with identical VBR min/max (60.0 V / 66.3 V), ID ≤1.0 µA at VWM, and VC = 87.1 V at IPPM = 17.2 A under 10/1000 µs waveform. Its glass-passivated junction ensures stable clamping and low incremental surge resistance.
Rated for 1500 W peak pulse power and 6.5 W steady-state dissipation at TA = 50 °C, it meets MSL Level 1 per J-STD-020 (260 °C reflow peak) and supports automated SMT placement on standard 8.0 mm × 8.0 mm copper pads per JEDEC layout guidelines.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 54 V - maximum continuous reverse operating voltage before clamping begins |
| VBR (min/max) | 60.0 V / 66.3 V at IT = 1 mA - guaranteed breakdown threshold for reliable transient detection |
| VC @ IPPM | 87.1 V at 17.2 A - clamped voltage during 10/1000 µs surge, defining protected circuit stress level |
| PPPM | 1500 W - peak transient energy absorption capability without failure |
| TJ max. | +150 °C - maximum junction temperature enabling operation in under-hood automotive environments |
| RθJA | 75 °C/W - thermal resistance from junction to ambient, used to calculate derated power at elevated TA |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, halogen-free, matte tin-plated leads solderable per J-STD-002 and JESD22-B102. Bidirectional configuration has no polarity marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (Anode side) | Transient return path (bidirectional) | Both terminals function identically; no cathode/anode distinction - symmetrical clamping in either direction |
| Anode (Cathode side) | Transient return path (bidirectional) | Identical to opposite terminal; enables placement without orientation check during assembly |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity constraints |
| AEC-Q101 qualification | Validates robustness for automotive applications including engine control, ADAS sensors, and infotainment power supplies |
| Halogen-free & RoHS-compliant (HM3 suffix) | Meets IEC 61249-2-21 and JESD201 Class 2 whisker resistance for long-term reliability in harsh environments |
| Low RθJL = 15 °C/W | Supports efficient heat transfer to PCB copper pads, critical for sustained surge handling in compact layouts |
| MSL Level 1 rating | Permits standard reflow profiles up to 260 °C peak without preconditioning, simplifying manufacturing flow |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: 12 V battery line in engine control unit exposed to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Primary overvoltage clamp limiting rail excursion to ≤87.1 V during 10/1000 µs surges. Use Value: Prevents damage to downstream MCU, CAN transceivers, and analog front-ends by absorbing up to 1500 W transient energy. |
Use Scenario: RS-485 differential pair in factory automation PLC I/O module subject to EFT and lightning-induced surges. IC Role / Device Role / Timing Role: Bidirectional voltage limiter across A/B lines, symmetrically suppressing ±87.1 V transients. Use Value: Maintains signal integrity below receiver common-mode limits while surviving repeated 17.2 A surge events. |
| Consumer Power Adapter Input Stage | Telecom DC Power Feeding Line |
Use Scenario: Secondary-side 54 V DC bus in USB PD 3.0 adapter subjected to capacitor discharge transients. IC Role / Device Role / Timing Role: Standoff-clamp device holding bus voltage at 54 V nominal and clamping to 87.1 V during fast transients. Use Value: Eliminates need for series resistors or additional filtering by providing sub-1 ns response and low clamping ratio (VC/VWM = 1.61). |
Use Scenario: −48 V DC feeding line in 5G base station remote radio head exposed to induced surges from nearby lightning strikes. IC Role / Device Role / Timing Role: Bidirectional protector across feed line and ground, clamping both positive and negative excursions. Use Value: Ensures uninterrupted power delivery by sustaining 1500 W surges without degradation, validated per Telcordia GR-1089-CORE. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ54CA-E3/57T | Lower PPPM (400 W), SMA package (smaller footprint, higher RθJA = 110 °C/W) | Suitable only for lower-energy transients; not rated for AEC-Q101 or automotive use | Select when board space is constrained and surge energy remains below 400 W. |
| SMCJ54AHE3_A/H | Unidirectional version; same VWM/VBR/PPPM but asymmetric clamping (forward VF = 3.5 V @ 100 A) | Requires polarity-aware placement; unsuitable for AC or floating lines where bidirectional protection is mandatory | Choose only for DC rails with defined polarity and where forward conduction must be minimized. |
Compared with SMCJ54CAHM3_A/H, SMAJ54CA-E3/57T offers reduced surge capacity and no automotive qualification, while SMCJ54AHE3_A/H lacks bidirectional symmetry - making SMCJ54CAHM3_A/H the sole choice for AEC-Q101-compliant, polarity-agnostic 54 V protection.
Availability
SMCJ54CAHM3_A/H is available at Aetrix Electronics and suitable for automotive electronics, industrial motor controllers, telecom power systems, and consumer power adapters requiring stable component supply and full AEC-Q101 compliance.
Supply support for SMCJ54CAHM3_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 designs and manufactures discrete semiconductors, including diodes, MOSFETs, and TVS devices, with emphasis on high-reliability, high-power, and automotive-qualified components.
The SMCJ series targets high-energy transient suppression in demanding environments, specifically engineered for ISO 7637-2, IEC 61000-4-5, and AEC-Q101-compliant applications across automotive, industrial, and telecom sectors.
FAQ
What is the clamping voltage of SMCJ54CAHM3_A/H at its rated peak pulse current?
The SMCJ54CAHM3_A/H clamps to a maximum of 87.1 V at its specified peak pulse current of 17.2 A under the standard 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and defines the upper voltage limit imposed on protected circuitry during surge events. The clamping ratio (VC/VWM = 1.61) confirms effective suppression relative to its 54 V standoff rating.
Is SMCJ54CAHM3_A/H qualified for automotive applications?
Yes, SMCJ54CAHM3_A/H is AEC-Q101 qualified, as confirmed by Vishay's ordering code suffix "HM3" and documentation in datasheet 88394. It undergoes stress testing for temperature cycling, high-temperature reverse bias, and ESD per AEC-Q101 requirements, making it suitable for engine control units, body electronics, and ADAS modules where automotive-grade reliability is mandatory.
How does the bidirectional design of SMCJ54CAHM3_A/H affect PCB layout?
The bidirectional design of SMCJ54CAHM3_A/H eliminates polarity constraints during placement - no cathode band marking exists, and both terminals behave identically. This simplifies layout, reduces assembly errors, and enables use on AC-coupled or floating differential lines like RS-485 or CAN FD without orientation verification. The SMC (DO-214AB) footprint remains unchanged from unidirectional variants.
What is the thermal resistance and how does it impact power derating for SMCJ54CAHM3_A/H?
SMCJ54CAHM3_A/H has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on 8.0 mm × 8.0 mm copper pads. At ambient temperatures above 25 °C, its 6.5 W steady-state power dissipation must be linearly derated - for example, to ~4.0 W at TA = 75 °C. This directly affects long-term reliability in enclosed enclosures or high-temperature environments.
Does SMCJ54CAHM3_A/H meet lead-free and halogen-free compliance standards?
Yes, the "HM3" suffix in SMCJ54CAHM3_A/H explicitly denotes halogen-free, RoHS-compliant construction per IEC 61249-2-21 and JESD201 Class 2 whisker resistance. The molding compound meets UL 94 V-0 flammability rating, and matte tin-plated leads comply with J-STD-002 and JESD22-B102 solderability standards - fully aligned with modern environmental and manufacturing requirements.
SMCJ54CAHM3_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:
- -
- Bidirectional Channels:
- 1
- 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)
SMCJ54CAHM3_A/H FAQ
1.How can I place an order for SMCJ54CAHM3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ54CAHM3_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 SMCJ54CAHM3_A/H reliable?
The price and inventory of SMCJ54CAHM3_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 SMCJ54CAHM3_A/H is usually 5 days.
3.What payment methods are accepted for SMCJ54CAHM3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ54CAHM3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ54CAHM3_A/H?
SMCJ54CAHM3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ54CAHM3_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 SMCJ54CAHM3_A/H?
For technical support, including SMCJ54CAHM3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ54CAHM3_A/H requirements.
6.How does Aetrix verify that SMCJ54CAHM3_A/H is sourced from the original manufacturer or authorized distributors?
All SMCJ54CAHM3_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 SMCJ54CAHM3_A/H meets industry standards.
7.What is the process for return or replacement of SMCJ54CAHM3_A/H?
All SMCJ54CAHM3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ54CAHM3_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 SMCJ54CAHM3_A/H part is unused and in its original packaging.
Return procedure for SMCJ54CAHM3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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