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Vishay General Semiconductor - Diodes Division SMCG30CAHE3/57T
- Part No.:
- SMCG30CAHE3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AB, SMC Gull Wing
- Datasheet:
-
SMCG30CAHE3/57T.pdf
- Description:
- TVS DIODE 30VWM 48.4VC DO215AB
- Quantity:
- Payment:
- Shipping:
Inventory:4,248
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Product details
Overview
SMCG30CAHE3/57T from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in the SMCG (DO-215AB) surface-mount package, designed for robust overvoltage protection of sensitive electronics. It features a 30 V standoff voltage (VWM), 33.3–36.8 V breakdown voltage (VBR) at 1 mA, 1500 W peak pulse power (PPPM), clamping voltage of 48.4 V at 31.0 A IPPM, and AEC-Q101 qualification for automotive-grade reliability.
For engineers reviewing the SMCG30CAHE3/57T datasheet, SMCG30CAHE3/57T pinout, SMCG30CAHE3/57T application, or SMCG30CAHE3/57T equivalent, this device is selected for high-energy surge suppression in automotive power lines, industrial sensor interfaces, and bidirectional signal line protection where low clamping ratio, fast response (<1 ns), and MSL Level 1 reflow compatibility are critical.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, with identical VBR min/max (33.3 V / 36.8 V), ID ≤ 1.0 μA at VWM, and VC = 48.4 V under 10/1000 μs surge. Its glass-passivated junction ensures stable leakage and low incremental surge resistance, while the DO-215AB package supports automated placement and meets UL 94 V-0 flammability.
The device sustains 1500 W peak pulse power per 10/1000 μs waveform, derates linearly above TA = 25 °C (per Fig. 2), and maintains operation from –55 °C to +150 °C junction temperature. Thermal resistance is RθJA = 75 °C/W (on 8.0 mm × 8.0 mm copper pads) and RθJL = 15 °C/W, enabling effective heat dissipation in compact layouts without heatsinking.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 30 V - Maximum continuous reverse operating voltage before clamping begins; defines safe working range for protected circuitry. |
| VBR (min/max) | 33.3 V / 36.8 V - Breakdown occurs within this band at 1 mA test current; ensures predictable turn-on threshold for transients. |
| VC @ IPPM | 48.4 V at 31.0 A - Clamped voltage during full-rated 10/1000 μs surge; determines maximum stress on downstream components. |
| PPPM | 1500 W - Peak pulse power handling capability; enables protection against IEC 61000-4-5 Level 4 surges (4 kV/2 Ω). |
| ID @ VWM | ≤1.0 μA - Reverse leakage at rated standoff voltage; minimizes standby power loss and avoids false triggering. |
| TJ max. | +150 °C - Maximum junction temperature; supports under-hood automotive use and high-ambient industrial environments. |
| AEC-Q101 | Qualified - Validated for automotive electronic systems per stress-test requirements including HTGB, HTRB, and TCT. |
Pinout & Package
SMCG30CAHE3/57T uses the SMCG (DO-215AB) surface-mount package: a gull-wing, dual-terminal, bidirectional case with no polarity marking. Terminals 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/Cathode (symmetrical) | Bidirectional surge path | Either terminal serves as anode or cathode depending on transient polarity; no DC bias dependency required. |
| Case (exposed metal) | Thermal conduction path | Package body provides mechanical mounting and thermal transfer to PCB copper; no electrical connection. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional symmetry | Identical VBR, VC, and IPPM performance in both directions - eliminates orientation concerns during layout and assembly. |
| AEC-Q101 qualification | Validated for automotive powertrain and chassis modules - ensures long-term reliability under thermal cycling and humidity stress. |
| Low clamping ratio (VC/VBR) | ~1.45 (48.4 V / 33.3 V) - limits voltage overshoot more tightly than standard Zener-based protectors, improving system margin. |
| MSL Level 1 rating | Reflow-compatible up to 260 °C peak - supports standard lead-free SMT processes without moisture sensitivity handling. |
| Glass-passivated junction | Stable leakage and breakdown characteristics over time and temperature - reduces parameter drift in harsh environments. |
Applications
| Automotive Power Line Protection | Industrial Sensor Interface |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs against load dump (ISO 16750-2) and alternator transients. IC Role / Device Role / Timing Role: Bidirectional clamping element placed between power rail and ground, responding within <1 ns to suppress spikes up to ±100 V. Use Value: Limits rail voltage to ≤48.4 V during 31 A surge, preventing damage to MCU power supplies and CAN transceivers. |
Use Scenario: Shielding analog sensor outputs (e.g., pressure, temperature) in factory automation PLCs from ESD and inductive switching noise. IC Role / Device Role / Timing Role: Low-capacitance (typ. <100 pF) shunt protector across differential signal pairs, maintaining signal integrity up to 1 MHz. Use Value: Absorbs 1500 W surges without forward conduction, preserving sensor accuracy and avoiding false triggers in 24 V control loops. |
| Telecom Data Line Surge Suppression | Consumer USB Port Protection |
Use Scenario: Safeguarding RS-485 transceivers in outdoor telecom cabinets exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Primary-level TVS on bus lines, coordinated with secondary GDT or polymer PTC for staged protection. Use Value: Withstands repeated 10/1000 μs surges up to 31 A while maintaining ≤1.0 μA leakage at 30 V, ensuring low standby current draw. |
Use Scenario: Overvoltage hardening of USB 2.0 D+/D− lines in automotive infotainment head units against hot-plug and ESD events. IC Role / Device Role / Timing Role: Bidirectional clamp placed directly at connector, leveraging symmetrical response to handle ±8 kV contact ESD (IEC 61000-4-2). Use Value: Clamps ESD pulses to <48.4 V within nanoseconds, protecting PHY ICs without adding signal distortion or insertion loss. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ30CA | Same VWM (30 V) and PPPM (1500 W), but SMA (DO-214AC) package; higher RθJA (95 °C/W) and no AEC-Q101 qualification. | Limited to commercial/industrial use; unsuitable for automotive under-hood deployment due to lower thermal robustness and qualification gap. | Select SMAJ30CA only for cost-sensitive non-automotive designs where MSL Level 1 and AEC-Q101 are not required. |
| 1.5KE30CA | Through-hole DO-201 package; same VWM and bidirectional function, but lower surge rating (1500 W same, yet larger footprint and manual assembly). | Not suitable for high-density SMT production; lacks gull-wing geometry for automated optical inspection and reflow profiling. | Choose 1.5KE30CA only for prototyping or legacy through-hole systems where board real estate and assembly method permit. |
Compared with SMAJ30CA and 1.5KE30CA, SMCG30CAHE3/57T delivers superior thermal performance (RθJA = 75 °C/W), automotive-grade reliability (AEC-Q101), and SMT process efficiency - making it the optimal choice for volume automotive and industrial electronics requiring zero rework risk and long-term supply stability.
Availability
SMCG30CAHE3/57T is available at Aetrix Electronics and suitable for automotive power distribution, industrial sensor interface design, and telecom surge protection requiring stable component supply, AEC-Q101 compliance, and high-volume tape-and-reel delivery.
Supply support for SMCG30CAHE3/57T 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, and protection devices with emphasis on reliability, precision, and application-specific validation.
The SMCG series was developed for high-energy, surface-mount transient suppression in space-constrained automotive and industrial systems - prioritizing low clamping voltage, bidirectional symmetry, and reflow-ready packaging.
FAQ
What is the clamping voltage of SMCG30CAHE3/57T under maximum rated surge current?
The SMCG30CAHE3/57T clamps to 48.4 V when subjected to its maximum peak pulse current (IPPM) of 31.0 A under the standardized 10/1000 μs waveform. This value is measured per ANSI/IEEE C62.35 and confirmed in the Vishay datasheet revision 09-Jan-2024, page 2. The clamping voltage directly defines the upper voltage limit imposed on protected circuitry during surge events.
Is SMCG30CAHE3/57T suitable for automotive applications?
Yes, SMCG30CAHE3/57T 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 across HTGB, HTRB, and temperature cycling tests confirm suitability for engine control units, body electronics, and ADAS sensor modules.
Does SMCG30CAHE3/57T have polarity markings?
No, SMCG30CAHE3/57T is a bidirectional TVS and carries no polarity marking on the package. As stated in the Vishay datasheet (page 1, "Polarity" section), bidirectional types like SMCG30CAHE3/57T have identical electrical behavior in both directions and require no orientation during placement - simplifying PCB layout and reducing assembly errors.
What is the thermal resistance of SMCG30CAHE3/57T in standard mounting conditions?
Under the standard test condition of 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal, SMCG30CAHE3/57T has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W and junction-to-lead resistance (RθJL) of 15 °C/W. These values are specified in the "THERMAL CHARACTERISTICS" table on page 3 of the Vishay datasheet 88457.
How does the HE3 suffix affect SMCG30CAHE3/57T's specifications?
HE3 denotes RoHS-compliant, AEC-Q101-qualified construction with matte tin-plated leads meeting J-STD-002 solderability and JESD 201 Class 2 whisker resistance. It does not alter electrical parameters - all ratings (VWM, VBR, PPPM, etc.) remain identical to non-HE3 variants - but certifies enhanced reliability and process compatibility for automotive production.
SMCG30CAHE3/57T 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:
- -
- Bidirectional Channels:
- 1
- 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)
SMCG30CAHE3/57T FAQ
1.How can I place an order for SMCG30CAHE3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCG30CAHE3/57T 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 SMCG30CAHE3/57T reliable?
The price and inventory of SMCG30CAHE3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCG30CAHE3/57T is usually 5 days.
3.What payment methods are accepted for SMCG30CAHE3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCG30CAHE3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCG30CAHE3/57T?
SMCG30CAHE3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCG30CAHE3/57T 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 SMCG30CAHE3/57T?
For technical support, including SMCG30CAHE3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCG30CAHE3/57T requirements.
6.How does Aetrix verify that SMCG30CAHE3/57T is sourced from the original manufacturer or authorized distributors?
All SMCG30CAHE3/57T 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 SMCG30CAHE3/57T meets industry standards.
7.What is the process for return or replacement of SMCG30CAHE3/57T?
All SMCG30CAHE3/57T units undergo pre-shipment inspection (PSI). If there is an issue with SMCG30CAHE3/57T, 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 SMCG30CAHE3/57T part is unused and in its original packaging.
Return procedure for SMCG30CAHE3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCG30CAHE3/57T Tags
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