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Vishay General Semiconductor - Diodes Division SMCG30AHE3/57T
- Part No.:
- SMCG30AHE3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AB, SMC Gull Wing
- Datasheet:
-
SMCG30AHE3/57T.pdf
- Description:
- TVS DIODE 30VWM 48.4VC DO215AB
- Quantity:
- Payment:
- Shipping:
Inventory:9,259
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Product details
Overview
SMCG30AHE3/57T from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in the SMCG (DO-215AB) package, designed for high-energy surge protection with 30 V stand-off voltage (VWM), 33.3–36.8 V breakdown voltage (VBR), 48.4 V clamping voltage (VC) at 31.0 A peak pulse current (IPPM), and 1500 W peak pulse power (PPPM). It is AEC-Q101 qualified and used to protect automotive sensor signal lines, power rails, and MOSFET gates against inductive switching transients.
For engineers reviewing the SMCG30AHE3/57T datasheet, SMCG30AHE3/57T pinout, SMCG30AHE3/57T application, or SMCG30AHE3/57T equivalent, this device is selected for robust ESD/surge immunity in space-constrained automotive and industrial PCBs where low-profile surface-mount TVS performance, MSL Level 1 reliability, and 150 °C junction operation are required.
Technical Context
The SMCG30AHE3/57T employs a glass-passivated silicon junction optimized for fast response (<1 ns) to transient overvoltages and low incremental surge resistance to maintain stable clamping under high-current 10/1000 μs surges. Its unidirectional polarity enables integration into DC-biased circuits such as automotive CAN bus power rails and microcontroller I/O protection paths.
Rated for 200 A non-repetitive forward surge current (IFSM) and operating across –55 °C to +150 °C, it supports automotive-grade thermal cycling and solder reflow up to 260 °C peak. The DO-215AB package provides 75 °C/W junction-to-ambient thermal resistance on standard 8.0 mm × 8.0 mm copper pads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 30 V - Maximum continuous reverse operating voltage before clamping begins; sets protection threshold for 3.3 V/5 V/12 V system rails. |
| VBR (min/max) | 33.3 V / 36.8 V - Breakdown occurs within this range at 1 mA test current; ensures reliable turn-on before damage to downstream ICs. |
| VC @ IPPM | 48.4 V - Clamped voltage at 31.0 A peak pulse current; defines worst-case stress seen by protected circuit during 10/1000 μs surge. |
| PPPM | 1500 W - Peak pulse power handling per 10/1000 μs waveform; enables protection against ISO 7637-2 Pulse 1/2/5a-level transients. |
| TJ max. | +150 °C - Maximum junction temperature; supports under-hood automotive placement without derating in most layouts. |
| Package | SMCG (DO-215AB) - Low-profile SMD outline with gull-wing leads; compatible with automated pick-and-place and reflow soldering. |
| AEC-Q101 | Qualified - Validated for automotive electronic systems per stress test requirements including HTOL, TCT, and ESD HBM/MM. |
Pinout & Package
SMCG30AHE3/57T uses the SMCG (DO-215AB) surface-mount package: gull-wing leads, matte tin-plated terminals, 0.220–0.245 inch body length, 0.115–0.125 inch width, and cathode band marking on the anode-side end. Mounting requires 8.0 mm × 8.0 mm copper pads per terminal per Vishay recommended layout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point in forward bias; connected to ground or low-side reference in unidirectional configuration | Provides return path for surge current during clamping; must be routed to low-impedance ground plane. |
| Cathode | Current exit point in forward bias; marked by band; connected to protected line (e.g., sensor VCC or signal) | Acts as the "protected node" interface; clamps voltage relative to Anode when transient exceeds VBR. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive electronics use including engine control units, ADAS sensors, and infotainment power supplies. |
| 1500 W peak pulse power | Withstands ISO 7637-2 Pulse 5a (50 V, 100 ms) and IEC 61000-4-5 Combination Wave (1.2/50 μs + 8/20 μs) surges without failure. |
| Low clamping ratio (VC/VBR ≈ 1.35) | Minimizes overvoltage overshoot during clamping, reducing risk of latch-up or gate oxide damage in protected MOSFETs or MCUs. |
| MSL Level 1 rating | Allows unlimited floor life and reflow at 260 °C peak without baking-critical for high-volume automotive manufacturing. |
| Glass-passivated junction | Ensures long-term stability of VBR and leakage under thermal cycling and humidity exposure per JESD22-A101. |
Applications
| Automotive Sensor Signal Protection | Industrial Motor Drive Power Rails |
|---|---|
Use Scenario: Protecting analog output lines of pressure/temperature sensors in engine bay environments exposed to load dump and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS placed between sensor VOUT and ground to clamp transients before they reach ADC input of MCU. Use Value: Limits voltage excursion to ≤48.4 V during 31 A surges, preserving 12-bit ADC accuracy and preventing input-stage saturation or damage. |
Use Scenario: Safeguarding gate drive supply rails of IGBT modules in variable-frequency drives subjected to inductive kickback. IC Role / Device Role / Timing Role: TVS mounted across +15 V gate supply and ground to absorb energy from transformer-coupled gate driver turn-off spikes. Use Value: Absorbs up to 1500 W for 1 ms, preventing gate oxide breakdown in IGBTs rated for ≤20 V absolute maximum gate-source voltage. |
| Automotive Body Control Module (BCM) Inputs | Telecom Power Interface Protection |
Use Scenario: Shielding wake-up inputs (e.g., door handle switch lines) from ESD and cable discharge events in 12 V BCMs. IC Role / Device Role / Timing Role: Unidirectional TVS on each switch input line, with cathode tied to line and anode to chassis ground. Use Value: Responds in <1 ns to ±8 kV contact ESD (IEC 61000-4-2), limiting voltage to 48.4 V and protecting internal Schmitt-trigger inputs. |
Use Scenario: Protecting DC power input (e.g., 24 V PoE-derived supply) of base station remote radio units from lightning-induced surges. IC Role / Device Role / Timing Role: Primary TVS stage upstream of DC-DC converter, clamping common-mode transients on +24 V and return lines. Use Value: Handles 10/1000 μs surges up to 31 A while maintaining 30 V nominal operating margin-enabling compliance with ITU-T K.20/21. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ30A-E3/57T | Same VWM (30 V), lower PPPM (400 W), SMA (DO-214AC) package, higher RθJA (110 °C/W) | Limited to lower-energy transients (e.g., IEC 61000-4-2 only); unsuitable for ISO 7637-2 Pulse 5a | Select when cost or board space is prioritized over automotive surge robustness. |
| TPSMA6L30A-Q1 | AEC-Q101 qualified, same VWM/VC, but 1700 W PPPM and lower VC (45.7 V); SOD-123FL package | Better clamping performance and higher surge margin; smaller footprint but lower IFSM (100 A vs. 200 A) | Prefer for new designs needing tighter clamping and space savings, provided 100 A IFSM suffices. |
Compared with SMAJ30A-E3/57T and TPSMA6L30A-Q1, SMCG30AHE3/57T delivers superior surge endurance (1500 W, 200 A IFSM) in a thermally optimized DO-215AB package-making it optimal for under-hood automotive and high-reliability industrial power rail protection where thermal management and transient headroom are critical.
Availability
SMCG30AHE3/57T is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial motor drive gate supplies, and telecom power input stages requiring stable component supply, AEC-Q101 compliance, and 1500 W transient immunity.
Supply support for SMCG30AHE3/57T 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, TVS devices, and optoelectronics with emphasis on reliability, automotive qualification, and high-power handling.
The SMCG series was developed specifically for high-energy transient suppression in automotive and industrial environments, combining AEC-Q101 qualification, low-profile packaging, and consistent clamping performance across temperature.
FAQ
What is the clamping voltage of SMCG30AHE3/57T at its rated peak pulse current?
The SMCG30AHE3/57T has a maximum clamping voltage (VC) of 48.4 V at 31.0 A peak pulse current (IPPM) under the standard 10/1000 μs waveform. This value is measured per JEDEC test conditions and defines the upper voltage limit imposed on protected circuitry during surge events-critical for ensuring compatibility with 3.3 V, 5 V, and 12 V logic and power domains. The SMCG30AHE3/57T maintains this clamping performance across its full operating temperature range.
Is SMCG30AHE3/57T suitable for bidirectional transient protection?
No, SMCG30AHE3/57T is a unidirectional TVS diode, indicated by the "A" suffix and absence of "CA" in the part number. It conducts only in reverse bias above VBR and must be oriented with the cathode band toward the protected line. For bidirectional protection (e.g., AC lines or data buses), Vishay offers the SMCG30CA variant. Using SMCG30AHE3/57T in bidirectional applications risks forward conduction and failure during positive transients.
What does the "HE3/57T" suffix indicate in SMCG30AHE3/57T?
The "HE3" suffix denotes RoHS-compliant construction with AEC-Q101 qualification, while "57T" specifies packaging in 7-inch plastic tape and reel containing 850 units. This configuration meets automotive supply chain requirements for traceability, solderability (J-STD-002), and whisker resistance (JESD 201 Class 2). The SMCG30AHE3/57T is not interchangeable with non-HE3 variants like SMCG30A-E3/57T in AEC-Q101–mandated designs.
How does SMCG30AHE3/57T perform under elevated ambient temperatures?
SMCG30AHE3/57T derates linearly above 25 °C ambient per Figure 2 in Vishay document 88457: at 85 °C TA, its 1500 W PPPM rating drops to approximately 1050 W, and its 31.0 A IPPM reduces to ~22 A. Its 150 °C maximum junction temperature allows continued operation in under-hood environments when mounted on 8.0 mm × 8.0 mm copper pads, but thermal simulation is recommended for sustained high-power surge duty cycles.
Can SMCG30AHE3/57T replace SMAJ30A in an existing design?
SMCG30AHE3/57T is not a drop-in replacement for SMAJ30A due to different packages (DO-215AB vs. DO-214AC), thermal characteristics (RθJA = 75 vs. 110 °C/W), and surge ratings (1500 W vs. 400 W). While both share 30 V VWM and unidirectional polarity, the SMCG30AHE3/57T requires revised pad layout, stencil design, and validation for higher-energy transients. Direct substitution may cause solder joint reliability issues or insufficient surge margin in automotive applications.
SMCG30AHE3/57T 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):
- 30V
- Voltage - Breakdown (Min):
- 33.3V
- Voltage - Clamping (Max) @ Ipp:
- 48.4V
- Current - Peak Pulse (10/1000µs):
- 31A
- 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)
SMCG30AHE3/57T FAQ
1.How can I place an order for SMCG30AHE3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCG30AHE3/57T 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 SMCG30AHE3/57T reliable?
The price and inventory of SMCG30AHE3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCG30AHE3/57T is usually 5 days.
3.What payment methods are accepted for SMCG30AHE3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCG30AHE3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCG30AHE3/57T?
SMCG30AHE3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCG30AHE3/57T 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 SMCG30AHE3/57T?
For technical support, including SMCG30AHE3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCG30AHE3/57T requirements.
6.How does Aetrix verify that SMCG30AHE3/57T is sourced from the original manufacturer or authorized distributors?
All SMCG30AHE3/57T 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 SMCG30AHE3/57T meets industry standards.
7.What is the process for return or replacement of SMCG30AHE3/57T?
All SMCG30AHE3/57T units undergo pre-shipment inspection (PSI). If there is an issue with SMCG30AHE3/57T, 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 SMCG30AHE3/57T part is unused and in its original packaging.
Return procedure for SMCG30AHE3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCG30AHE3/57T Tags
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