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Vishay General Semiconductor - Diodes Division SMCG54AHE3/57T
- Part No.:
- SMCG54AHE3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AB, SMC Gull Wing
- Datasheet:
-
SMCG54AHE3/57T.pdf
- Description:
- TVS DIODE 54VWM 87.1VC DO215AB
- Quantity:
- Payment:
- Shipping:
Inventory:1,155
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Product details
Overview
SMCG54AHE3/57T from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in the SMCG (DO-215AB) package, designed for high-energy surge protection on power and signal lines. It features a 54 V stand-off voltage (VWM), 60.0–66.3 V breakdown voltage (VBR) at 1 mA, 1500 W peak pulse power (10/1000 µs), 17.2 A peak pulse current (IPPM), and clamps to 87.1 V at rated surge current. It is AEC-Q101 qualified and used in automotive power rail and sensor interface protection.
For engineers reviewing the SMCG54AHE3/57T datasheet, SMCG54AHE3/57T pinout, SMCG54AHE3/57T application, or SMCG54AHE3/57T equivalent, this page delivers verified electrical parameters, mechanical package data, real-world use cases, and validated alternative parts - all aligned with Vishay's official 88457 specification document dated 09-Jan-2024.
Technical Context
The SMCG54AHE3/57T operates as a unidirectional avalanche diode, leveraging glass-passivated junction technology for stable breakdown behavior and low incremental surge resistance. Its clamping voltage of 87.1 V at 17.2 A ensures robust overvoltage suppression during transients induced by inductive load switching or ESD events.
Designed for surface-mount assembly on 8.0 mm × 8.0 mm copper pads per terminal, it achieves thermal resistance of 75 °C/W (junction-to-ambient) and supports operating junction temperatures from –55 °C to +150 °C. The device meets J-STD-020 MSL Level 1 and is qualified to AEC-Q101 for automotive under-hood applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 54 V - Maximum continuous reverse working voltage before clamping begins; defines safe operating margin below breakdown. |
| VBR (min/max) | 60.0 V / 66.3 V at 1 mA - Confirmed breakdown range ensuring predictable turn-on threshold across production lots. |
| VC @ IPPM | 87.1 V at 17.2 A - Clamping voltage under standardized 10/1000 µs surge; determines maximum stress imposed on protected ICs. |
| PPPM | 1500 W - Peak pulse power handling capacity; enables protection against high-energy transients like ISO 7637-2 Pulse 5a. |
| ID @ VWM | 1.0 µA - Reverse leakage at rated stand-off voltage; ensures minimal quiescent power loss in always-on circuits. |
| TJ max. | +150 °C - Maximum junction temperature rating; supports operation in engine control units and power converters. |
| Package | SMCG (DO-215AB) - Low-profile SMD outline with matte tin-plated leads; compatible with automated pick-and-place and reflow. |
Pinout & Package
SMCG54AHE3/57T uses the SMCG (DO-215AB) surface-mount package: a gull-wing leaded, dual-terminal case with cathode band marking. Leads are matte tin plated, solderable per J-STD-002 and JESD 22-B102, and meet JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point in forward bias; connected to ground or low-side reference in unidirectional TVS configuration. | Provides return path for surge current during clamping; must be routed to low-impedance ground plane for effective energy dissipation. |
| Cathode | Current exit point in forward bias; marked with band; connected to protected line (e.g., 12 V rail or CAN_H). | Defines polarity-sensitive connection - reversal prevents clamping; critical for correct placement on PCB with automated optical inspection. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and surge endurance - required for powertrain and body control modules. |
| Glass-passivated junction | Ensures stable VBR tolerance and long-term parameter stability under thermal stress and humidity exposure. |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (<1 ns rise time), improving protection margin for sensitive microcontrollers. |
| MSL Level 1 rating | Enables unlimited floor life and standard reflow without baking - reduces manufacturing overhead and avoids moisture-related popcorning. |
| UL 94 V-0 molding compound | Self-extinguishing encapsulation material - satisfies flammability requirements for under-hood and industrial enclosure applications. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V/24 V battery-fed ECUs from load dump and alternator transients per ISO 7637-2. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power input and ground, clamping surges within 1 ns. Use Value: Limits voltage seen by downstream DC/DC converters and MCU power supplies to ≤87.1 V, preventing latch-up or permanent damage. |
Use Scenario: Safeguarding analog sensor outputs (e.g., pressure, temperature) in factory automation systems exposed to relay-induced spikes. IC Role / Device Role / Timing Role: Point-of-entry TVS on sensor signal line, shunting transient energy before reaching ADC input stage. Use Value: Maintains signal integrity by holding clamped voltage below ADC absolute maximum rating while adding <0.5 pF capacitance. |
| Telecom Line Interface Protection | Consumer Power Adapter Input Protection |
Use Scenario: Shielding Ethernet PHY power pins (e.g., MDI-X bias rails) from ESD and lightning-induced surges in PoE switches. IC Role / Device Role / Timing Role: Secondary-level TVS after primary gas discharge tube, absorbing residual energy in sub-microsecond timescale. Use Value: Provides precise 54 V standoff to avoid false triggering during normal 48 V PoE operation while clamping to 87.1 V during 1 kV/1.2 µs surges. |
Use Scenario: Input-stage surge suppression in AC/DC adapters for smart home devices subjected to mains-borne transients (IEC 61000-4-5). IC Role / Device Role / Timing Role: First-line unidirectional clamp on DC bus prior to primary controller IC. Use Value: Handles 1500 W pulses without degradation, enabling compliance with Level 3 (2 kV) surge immunity testing without derating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ54A-E3/57T | Same VWM (54 V) and VC (87.1 V), but lower PPPM (400 W) and smaller SMA package (DO-214AC). | Limited to lower-energy transients; unsuitable for ISO 7637-2 Pulse 5a or high-current load dump. | Select when board space is constrained and surge threat level is ≤400 W - not a drop-in replacement for 1500 W requirements. |
| SMCJ54A-E3/57T | Identical VWM (54 V), VC (87.1 V), and PPPM (1500 W), but in larger SMC (DO-214AB) package with higher thermal mass. | Better sustained power handling under repetitive surges; requires larger PCB footprint and different pad layout. | Choose for designs needing enhanced thermal robustness in high-temperature environments (>105 °C ambient), with layout revision. |
Compared with SMAJ54A-E3/57T and SMCJ54A-E3/57T, the SMCG54AHE3/57T delivers identical 1500 W surge capability in a lower-profile DO-215AB package with AEC-Q101 qualification - making it optimal for space-constrained automotive modules where reliability and height clearance are both critical.
Availability
SMCG54AHE3/57T is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface hardening, and telecom line surge suppression requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for SMCG54AHE3/57T 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 passive components with emphasis on reliability, efficiency, and automotive-grade qualification.
The SMCG series is part of Vishay's TRANSZORB® TVS platform, engineered specifically for high-power, low-clamping transient suppression in harsh environments - targeting automotive, industrial, and telecom infrastructure applications.
FAQ
What is the clamping voltage of the SMCG54AHE3/57T and how is it measured?
The SMCG54AHE3/57T has a maximum clamping voltage (VC) of 87.1 V, measured at its rated peak pulse current (IPPM) of 17.2 A using the standardized 10/1000 µs double-exponential surge waveform. This value is guaranteed per Vishay Document Number 88457 and reflects the actual voltage seen by protected circuitry during worst-case transient events - critical for verifying margin against downstream IC absolute maximum ratings.
Is the SMCG54AHE3/57T suitable for automotive applications?
Yes, the SMCG54AHE3/57T is AEC-Q101 qualified and explicitly rated for automotive use, including under-hood environments. Its –55 °C to +150 °C operating junction temperature range, MSL Level 1 reflow compatibility, and validation against surge, thermal cycling, and HTRB tests make it appropriate for engine control units, body electronics, and ADAS power domains - as confirmed in Vishay's 09-Jan-2024 revision of document 88457.
What does the "HE3" suffix mean in SMCG54AHE3/57T?
The "HE3" suffix in SMCG54AHE3/57T indicates RoHS-compliant construction with AEC-Q101 qualification. Per Vishay's ordering nomenclature, "HE3" denotes the industrial-grade, AEC-Q101-qualified variant with matte tin-plated leads - distinct from "E3" (RoHS, non-AEC-Q101) and "HM3" (halogen-free + AEC-Q101). This suffix directly correlates to reliability assurance for automotive and high-reliability industrial deployments.
How does the SMCG54AHE3/57T differ from the bidirectional SMCG54CA variants?
The SMCG54AHE3/57T is unidirectional, with a defined cathode band and forward conduction capability, whereas SMCG54CA devices are bidirectional and lack polarity marking. Electrically, SMCG54AHE3/57T has asymmetric I-V characteristics - conducting only in reverse breakdown and forward conduction - making it ideal for DC rail protection. Bidirectional versions are used for AC or differential signal lines like RS-485 or CAN, where polarity reversal occurs.
What is the thermal resistance of the SMCG54AHE3/57T and how does it affect layout?
The SMCG54AHE3/57T 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 - as specified in Vishay document 88457. To maintain safe junction temperature under 1500 W surges, PCB layout must replicate this pad area and ensure low-thermal-resistance connections to internal ground planes; undersized pads will cause excessive TJ rise and potential parametric shift or failure.
SMCG54AHE3/57T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-215AB, SMC Gull Wing
- 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCG)
SMCG54AHE3/57T FAQ
1.How can I place an order for SMCG54AHE3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCG54AHE3/57T 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 SMCG54AHE3/57T reliable?
The price and inventory of SMCG54AHE3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCG54AHE3/57T is usually 5 days.
3.What payment methods are accepted for SMCG54AHE3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCG54AHE3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCG54AHE3/57T?
SMCG54AHE3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCG54AHE3/57T 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 SMCG54AHE3/57T?
For technical support, including SMCG54AHE3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCG54AHE3/57T requirements.
6.How does Aetrix verify that SMCG54AHE3/57T is sourced from the original manufacturer or authorized distributors?
All SMCG54AHE3/57T 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 SMCG54AHE3/57T meets industry standards.
7.What is the process for return or replacement of SMCG54AHE3/57T?
All SMCG54AHE3/57T units undergo pre-shipment inspection (PSI). If there is an issue with SMCG54AHE3/57T, 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 SMCG54AHE3/57T part is unused and in its original packaging.
Return procedure for SMCG54AHE3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCG54AHE3/57T Tags
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