My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SMCJ54CAHM3/H
- Part No.:
- SMCJ54CAHM3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ54CAHM3/H.pdf
- Description:
- TVS DIODE 54VWM 87.1VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:6,795
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMCJ54CAHM3/H from Vishay General Semiconductor is a bidirectional 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, 1500 W peak pulse power (10/1000 µs), and clamps transients to ≤87.1 V at 17.2 A IPPM - deployed on power rails and signal lines in automotive ECUs and industrial motor drives.
For engineers reviewing the SMCJ54CAHM3/H datasheet, SMCJ54CAHM3/H pinout, SMCJ54CAHM3/H application, or SMCJ54CAHM3/H equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, halogen-free RoHS compliance, and thermal resistance (RθJA = 75 °C/W) for high-reliability PCB-level surge suppression.
Technical Context
This TVS diode operates symmetrically in both directions due to its bidirectional construction, enabling protection against polarity-agnostic transients such as ESD, load dump, and inductive switching spikes. Its glass-passivated junction ensures stable VBR tolerance and low leakage (<1 µA at VWM), while the low incremental surge resistance supports fast clamping with minimal voltage overshoot during 10/1000 µs surges.
The device is rated for TJ = –55 °C to +150 °C operation and meets MSL Level 1 per J-STD-020 (260 °C peak reflow). Its SMC package provides mechanical robustness and thermal performance suitable for automated SMT assembly without derating concerns below 125 °C ambient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 54 V - maximum continuous reverse operating voltage before clamping begins; defines safe operating margin for 48 V nominal systems. |
| VBR min/max | 60.0 V / 66.3 V at IT = 1 mA - tight breakdown window ensures predictable turn-on and avoids premature conduction. |
| VC @ IPPM | ≤87.1 V at 17.2 A - clamping voltage under 10/1000 µs surge; limits stress on downstream ICs like CAN transceivers or microcontrollers. |
| PPPM | 1500 W - peak pulse power handling capacity; sustains high-energy transients common in automotive load-dump events. |
| TJ max | +150 °C - enables use in under-hood automotive environments and high-power industrial enclosures without thermal shutdown. |
| RθJA | 75 °C/W - junction-to-ambient thermal resistance on standard 8 mm × 8 mm copper pads; informs board-level thermal design for sustained surge duty cycles. |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, bidirectional - no polarity marking; symmetrical two-terminal construction with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (bidirectional) | Accepts surge current in either polarity; connects to protected line (e.g., CAN_H or 48 V rail). |
| Cathode | Transient current exit (bidirectional) | Completes surge path to ground or return; identical electrical role to Anode due to symmetry. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing - required for ECU, ADAS, and body control modules. |
| Halogen-free & RoHS-compliant | HM3 suffix confirms full compliance with JEDEC J-STD-201 Class 2 whisker resistance and environmental regulations for global OEM supply chains. |
| Low-profile SMC package | Height ≤ 2.62 mm - enables compact placement near connectors or ICs without interfering with shielding cans or stacked boards. |
| Fast response time | <1 ps intrinsic junction response - clamps transients before propagation into protected circuitry, critical for high-speed data lines. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Suppressing load-dump transients (up to 60 V, 200 ms) on 48 V battery-fed ECUs in commercial vehicles. IC Role / Device Role / Timing Role: Bidirectional TVS placed between power input and ground, clamping surges before they reach DC-DC converters and MCU power supplies. Use Value: Prevents latch-up or permanent damage to 5 V/3.3 V regulators by limiting peak voltage to 87.1 V during ISO 16750-2 Pulse 5a events. | Use Scenario: Protecting analog sensor outputs (e.g., pressure, temperature) connected to PLC I/O modules exposed to field wiring noise. IC Role / Device Role / Timing Role: Two-terminal shunt protector across differential sensor pair (e.g., 4–20 mA loop or RS-485 bus), absorbing EFT bursts and lightning-induced surges. Use Value: Maintains signal integrity by clamping transients within 1 ns, avoiding false readings or ADC saturation in ±10 V measurement circuits. |
| Telecom Line Card Surge Suppression | Consumer Appliance Motor Drive Protection |
Use Scenario: Guarding Ethernet PHY interfaces and PoE injectors against induced surges from nearby AC mains or lightning coupling. IC Role / Device Role / Timing Role: Primary-level TVS on RJ45 jack side, coordinated with secondary GDT or polymer PTC for multi-stage telecom surge immunity (IEC 61000-4-5 Level 4). Use Value: Withstands repeated 1500 W surges without degradation, ensuring >10-year field life in outdoor network cabinets. | Use Scenario: Shielding BLDC motor driver gate drivers and current-sense amplifiers from commutation spikes in smart washing machines and HVAC fans. IC Role / Device Role / Timing Role: Localized TVS across half-bridge FET source terminals and controller VDD pins, diverting inductive kickback energy away from logic inputs. Use Value: Eliminates need for external snubbers by clamping 100 V+ spikes to <87.1 V, reducing BOM count and PCB area in cost-sensitive white goods. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SAC54CA | Lower PPPM (600 W), same VWM/VBR range, SOD-123FL package (smaller, lower thermal mass) | Limited to low-energy consumer interfaces; not rated for automotive load dump | Select when space-constrained and surge energy ≤300 mJ; verify RθJA derating for sustained pulses. |
| SMCJ54AHE3_A/H | Unidirectional version; identical VWM/VBR/PPPM but asymmetric conduction - requires correct polarity orientation | Only usable where system ground reference is fixed and reverse voltage cannot occur | Choose only if circuit topology guarantees unidirectional surge polarity; otherwise SMCJ54CAHM3/H provides safer, polarity-agnostic protection. |
Compared with SAC54CA and SMCJ54AHE3_A/H, the SMCJ54CAHM3/H delivers full 1500 W bidirectional clamping in an AEC-Q101-qualified, halogen-free SMC package - making it the sole option meeting automotive load-dump, industrial surge, and telecom immunity requirements without layout or polarity constraints.
Availability
SMCJ54CAHM3/H is available at Aetrix Electronics and suitable for automotive electronic control units, industrial programmable logic controllers, and telecom infrastructure equipment requiring stable component supply and long-term lifecycle assurance.
Supply support for SMCJ54CAHM3/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, MOSFETs, optoelectronics, and passive components with emphasis on reliability, efficiency, and application-specific optimization.
The SMCJ series is part of Vishay's TRANSZORB® TVS platform, engineered specifically for high-energy transient suppression in harsh environments - targeting automotive, industrial, and communications systems where failure is not an option.
FAQ
What does the 'HM3' suffix indicate in SMCJ54CAHM3/H?
The HM3 suffix in SMCJ54CAHM3/H denotes halogen-free, RoHS-compliant construction with JESD 201 Class 2 whisker resistance and AEC-Q101 qualification. It confirms the device meets automotive-grade reliability standards and environmental compliance for global OEM programs - distinct from commercial-grade M3 or E3 variants. The SMCJ54CAHM3/H is fully traceable and certified for under-hood deployment.
Is SMCJ54CAHM3/H suitable for protecting CAN FD bus lines?
Yes, SMCJ54CAHM3/H is suitable for CAN FD bus protection when used with appropriate series impedance (e.g., 10 Ω resistor) and layout practices. Its 54 V VWM exceeds typical CAN FD common-mode voltage (±12 V), and its 87.1 V clamping voltage stays well below the 100 V absolute maximum rating of most CAN transceivers. The bidirectional nature ensures protection against both positive and negative transients on CAN_H/CAN_L lines.
How does SMCJ54CAHM3/H perform under repeated surge stress?
SMCJ54CAHM3/H maintains parameter stability after repeated 10/1000 µs surges up to its rated PPPM (1500 W), provided junction temperature remains within –55 °C to +150 °C and thermal design follows Vishay's recommended 8 mm × 8 mm copper pad layout. Life testing shows no parametric shift after 1000 surges at 80 % IPPM, confirming suitability for industrial equipment with frequent switching events.
Does SMCJ54CAHM3/H require a heatsink for 6.5 W continuous dissipation?
No, SMCJ54CAHM3/H does not require an external heatsink for its 6.5 W power dissipation rating - this value is specified at TA = 50 °C on infinite heatsink conditions, but real-world PCB layout with 8 mm × 8 mm copper pads per terminal achieves sufficient thermal transfer. In typical 2-layer boards, derating begins above 75 °C ambient; for sustained 6.5 W, verify local board temperature rise using RθJA = 75 °C/W and measured power loss.
Can SMCJ54CAHM3/H replace SMCJ54A in existing designs?
SMCJ54CAHM3/H can replace unidirectional SMCJ54A only if the circuit is inherently bidirectional or polarity-insensitive - e.g., across power rails or differential buses. Unlike SMCJ54A, the 'CA' version has no cathode marking and conducts identically in both directions. If the original design relies on unidirectional blocking (e.g., reverse-polarity protection), substitution requires schematic and layout review to avoid unintended conduction paths.
SMCJ54CAHM3/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:
- -
- 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/H FAQ
1.How can I place an order for SMCJ54CAHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ54CAHM3/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/H reliable?
The price and inventory of SMCJ54CAHM3/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/H is usually 5 days.
3.What payment methods are accepted for SMCJ54CAHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ54CAHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ54CAHM3/H?
SMCJ54CAHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ54CAHM3/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/H?
For technical support, including SMCJ54CAHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ54CAHM3/H requirements.
6.How does Aetrix verify that SMCJ54CAHM3/H is sourced from the original manufacturer or authorized distributors?
All SMCJ54CAHM3/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/H meets industry standards.
7.What is the process for return or replacement of SMCJ54CAHM3/H?
All SMCJ54CAHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ54CAHM3/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/H part is unused and in its original packaging.
Return procedure for SMCJ54CAHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ54CAHM3/H Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
Tech Hub
Comparator circuit design covering voltage thresholds, input limits, open-collector outputs, LM393 wiring, op-amp differences, hysteresis, timing, window detection and practical fault diagnosis.
Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
