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Vishay General Semiconductor - Diodes Division SMCJ54AHM3/H
- Part No.:
- SMCJ54AHM3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ54AHM3/H.pdf
- Description:
- TVS DIODE 54VWM 87.1VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:2,935
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Product details
Overview
SMCJ54AHM3/H from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMC (DO-214AB) package, designed for high-energy surge protection with 54 V standoff voltage (VWM), 60.0–66.3 V breakdown voltage (VBR), and 1500 W peak pulse power (PPPM) at 10/1000 µs waveform. It clamps transients to ≤87.1 V at 17.2 A peak current and operates from –55 °C to +150 °C, targeting automotive power rail and industrial sensor line protection.
For engineers reviewing the SMCJ54AHM3/H datasheet, SMCJ54AHM3/H pinout, SMCJ54AHM3/H application, or SMCJ54AHM3/H equivalent, key selection criteria include its AEC-Q101 qualification (HM3 suffix), halogen-free RoHS compliance, 1.0 µA max reverse leakage at 54 V, and low 0.104 %/°C VBR temperature coefficient - critical for stable clamping in thermally varying environments.
Technical Context
This TVS diode uses a glass-passivated silicon junction optimized for fast response (<1 ns) to ESD and lightning-induced surges. Its unidirectional polarity features a cathode band marking and supports DC-biased signal/power lines where reverse conduction must be blocked.
Rated for 1500 W peak pulse power under standardized 10/1000 µs waveform, it delivers 87.1 V clamping voltage at 17.2 A IPPM while maintaining low incremental surge resistance - enabling robust protection of downstream MOSFETs, ICs, and CAN/LIN bus interfaces without sacrificing signal integrity.
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 1.0 mA - ensures reliable turn-on within tight tolerance for predictable protection threshold |
| VC @ IPPM | 87.1 V at 17.2 A - clamping voltage defines worst-case stress on protected circuitry |
| PPPM | 1500 W - energy-handling capacity for IEC 61000-4-5 Level 4 surge immunity compliance |
| ID @ VWM | 1.0 µA - ultra-low leakage preserves battery life and signal accuracy in always-on systems |
| TJ max | +150 °C - enables under-hood automotive deployment and high-temperature industrial use |
| Temp Coeff | 0.104 %/°C - minimal VBR drift over temperature ensures consistent clamping across operating range |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, matte tin-plated leads, MSL Level 1 (260 °C reflow peak), UL 94 V-0 molding compound. Cathode marked by band on body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Surge return path | Connected to ground or low-impedance return in unidirectional configuration; carries full surge current during clamping |
| Cathode | Reverse-biased terminal / Clamping node | Connected to protected line (e.g., 12 V rail); initiates avalanche conduction when VWM exceeded |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified (HM3 suffix) | Validated for automotive-grade reliability including temperature cycling, humidity, and mechanical shock per JESD22 |
| Halogen-free & RoHS-compliant | Meets EU Directive 2011/65/EU and JEDEC J-STD-201 Class 2 whisker resistance requirements |
| Low-profile SMC package | Enables automated placement on dense PCBs and supports thermal relief via 8 mm × 8 mm copper pads per terminal |
| Fast response time & low clamping ratio | Sub-nanosecond turn-on and VC/VBR ≈ 1.45 ensure minimal overvoltage exposure to sensitive loads |
| Glass passivated junction | Enhances long-term stability and moisture resistance versus epoxy-passivated alternatives |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V/24 V supply lines in engine control units (ECUs) against load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Primary clamping device placed upstream of DC-DC converters and microcontrollers. Use Value: Withstands 1500 W surges and maintains 87.1 V clamping, preventing latch-up or permanent damage to downstream ASICs. | Use Scenario: Safeguarding analog output lines (e.g., 4–20 mA current loops) in factory automation sensors exposed to motor switching noise. IC Role / Device Role / Timing Role: Unidirectional shunt protector on signal path between sensor front-end and PLC input stage. Use Value: 1.0 µA leakage at 54 V avoids measurement offset; 0.104 %/°C tempco ensures stable trip point across –40 °C to +125 °C ambient. |
| Telecom DC Power Input Protection | Consumer Device USB/Power Port Protection |
Use Scenario: Securing 48 V PoE-powered equipment inputs against induced surges from nearby AC wiring or lightning coupling. IC Role / Device Role / Timing Role: First-line transient suppressor on primary DC input before EMI filter and secondary TVS stages. Use Value: 1500 W rating meets IEC 61000-4-5 2 Ω/12 Ω coupling network requirements; SMC package allows compact layout near connector. | Use Scenario: Hardening 5 V/9 V/12 V USB-C PD power delivery ports in smart home hubs against ESD and cable discharge events. IC Role / Device Role / Timing Role: Standoff-rated TVS placed directly at port connector to divert fast transients before entering PMIC or charging IC. Use Value: 87.1 V clamping prevents overvoltage on 12 V rails; halogen-free HM3 construction satisfies consumer product environmental mandates. |
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), same VWM/VBR range | Not suitable for IEC 61000-4-5 Level 4; limited to lower-energy ESD and inductive spikes | Select when board space is constrained and surge threat level is ≤400 W. |
| SMCJ54A-M3/57T | Same electrical specs and SMC package, but commercial-grade (non-AEC-Q101), M3 halogen-free RoHS only | Lacks automotive qualification; not approved for under-hood or safety-critical ECUs | Select for cost-sensitive industrial or consumer designs where AEC-Q101 is not mandated. |
Compared with SMCJ54AHM3/H, SMAJ54AHE3/A offers smaller size but sacrifices 73 % peak power handling, while SMCJ54A-M3/57T matches performance but omits automotive qualification - making SMCJ54AHM3/H the sole choice for AEC-Q101-compliant 1500 W protection in SMC form factor.
Availability
SMCJ54AHM3/H is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface hardening, and telecom DC input surge suppression requiring stable component supply and long-term lifecycle support.
Supply support for SMCJ54AHM3/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 optimization.
The SMCJ series is engineered for high-energy transient suppression in harsh environments, targeting automotive, industrial, and telecom infrastructure where robustness, AEC-Q101 compliance, and precise clamping are mandatory.
FAQ
What is the clamping voltage of SMCJ54AHM3/H at its rated peak pulse current?
The SMCJ54AHM3/H has a maximum clamping voltage (VC) of 87.1 V at its rated peak pulse current (IPPM) 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 circuits during surge events - a critical parameter for ensuring downstream ICs remain within absolute maximum ratings. The SMCJ54AHM3/H achieves this with low incremental surge resistance and fast avalanche response.
Is SMCJ54AHM3/H qualified for automotive applications?
Yes, SMCJ54AHM3/H is AEC-Q101 qualified, as confirmed by the "HM3" suffix in its ordering code, which denotes halogen-free, RoHS-compliant, and automotive-grade qualification. It undergoes rigorous stress testing including temperature cycling, high-temperature operating life, and mechanical shock per JESD22 standards. This makes SMCJ54AHM3/H suitable for under-hood and chassis-mounted modules where reliability under thermal and vibration stress is essential.
What does the "H" in SMCJ54AHM3/H indicate in the part number?
The "H" in SMCJ54AHM3/H specifies the preferred package code for 7-inch diameter plastic tape and reel delivery, containing 850 units per reel. It does not denote a functional or electrical variant - all electrical characteristics, package dimensions, and qualification status remain identical to other SMCJ54AHM3 variants (e.g., SMCJ54AHM3_A/I). The "HM3" base suffix confirms halogen-free and AEC-Q101 qualification, while "H" is purely a packaging and logistics identifier.
How does the thermal resistance of SMCJ54AHM3/H affect its power derating?
SMCJ54AHM3/H has a typical junction-to-lead thermal resistance (RθJL) of 15 °C/W and junction-to-ambient (RθJA) of 75 °C/W when mounted on minimum recommended pad layout. At elevated ambient temperatures above 25 °C, its 6.5 W steady-state power dissipation must be linearly derated - for example, at 100 °C ambient, usable PD drops to ~3.25 W. This derating curve is defined in Figure 2 of the datasheet and directly impacts sustained surge repetition rate and thermal design of adjacent components.
Can SMCJ54AHM3/H be used in bidirectional configurations?
No, SMCJ54AHM3/H is a unidirectional TVS diode, as indicated by the "A" (not "CA") suffix and presence of a cathode band marking. Bidirectional operation requires the "CA" suffix (e.g., SMCJ54CA), which lacks polarity marking and conducts symmetrically in both directions. Using SMCJ54AHM3/H in a bidirectional application would result in forward conduction on negative transients, potentially damaging the device or failing to protect the circuit - always match suffix and marking to system polarity requirements.
SMCJ54AHM3/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:
- 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/H FAQ
1.How can I place an order for SMCJ54AHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ54AHM3/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/H reliable?
The price and inventory of SMCJ54AHM3/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/H is usually 5 days.
3.What payment methods are accepted for SMCJ54AHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ54AHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ54AHM3/H?
SMCJ54AHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ54AHM3/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/H?
For technical support, including SMCJ54AHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ54AHM3/H requirements.
6.How does Aetrix verify that SMCJ54AHM3/H is sourced from the original manufacturer or authorized distributors?
All SMCJ54AHM3/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/H meets industry standards.
7.What is the process for return or replacement of SMCJ54AHM3/H?
All SMCJ54AHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ54AHM3/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/H part is unused and in its original packaging.
Return procedure for SMCJ54AHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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