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Vishay General Semiconductor - Diodes Division 1.5SMC30CAHE3/57T
- Part No.:
- 1.5SMC30CAHE3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC30CAHE3/57T.pdf
- Description:
- TVS DIODE 25.6VWM 41.4VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:9,506
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Product details
Overview
1.5SMC30CAHE3/57T from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMC (DO-214AB) package, designed for high-energy surge protection. It features 30 V standoff voltage (VWM), 33.3 V minimum breakdown voltage (VBR), 41.4 V maximum clamping voltage (VC) at 36.2 A peak pulse current (IPPM), and 1500 W peak pulse power (PPPM) with 10/1000 μs waveform - deployed to safeguard signal lines and power rails in automotive sensor units and industrial control interfaces.
For engineers reviewing the 1.5SMC30CAHE3/57T datasheet, 1.5SMC30CAHE3/57T pinout, 1.5SMC30CAHE3/57T application, or 1.5SMC30CAHE3/57T equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, low incremental surge resistance, thermal resistance of 75 °C/W (junction-to-ambient), and compatibility with automated SMT placement on 8.0 mm × 8.0 mm copper pads.
Technical Context
This bidirectional TVS operates symmetrically in both polarities, delivering consistent clamping performance without polarity dependency. Its glass-passivated junction ensures stable reverse leakage (<1.0 μA at VWM) and fast response time (<1.0 ps), enabling effective suppression of ESD, lightning-induced transients, and inductive switching spikes.
The device is rated for repetitive 10/1000 μs surges at 0.01% duty cycle and supports continuous power dissipation of 6.5 W at TA = 50 °C. Junction temperature range spans −65 °C to +150 °C, and it meets MSL Level 1 per J-STD-020 with peak reflow temperature up to 260 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 30 V - Maximum continuous reverse operating voltage before clamping initiates; defines safe operating margin for protected circuitry. |
| VBR (Breakdown Voltage) | 33.3 V min - Voltage at which device enters avalanche conduction; ensures reliable turn-on during overvoltage events. |
| VC (Clamping Voltage) | 41.4 V max at IPPM = 36.2 A - Peak voltage seen by downstream components during worst-case transient; critical for IC-level protection. |
| PPPM (Peak Pulse Power) | 1500 W - Energy-handling capacity under standardized 10/1000 μs waveform; enables robust defense against IEC 61000-4-5 Level 4 surges. |
| TJ max | +150 °C - Maximum junction temperature; supports operation in under-hood automotive environments and industrial enclosures. |
| RθJA | 75 °C/W - Thermal resistance from junction to ambient; informs heatsinking requirements when operating near PD = 6.5 W limit. |
| AEC-Q101 Qualified | Yes - Validated for automotive-grade reliability including HTOL, TC, UHAST, and ESD testing per AEC specification. |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, bidirectional configuration with no polarity marking. Dimensions: 7.75 mm × 6.22 mm × 2.62 mm (L × W × H); matte tin-plated leads compliant with J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry point (bidirectional) | Accepts surge current regardless of polarity; connects to line being protected (e.g., CAN_H or RS-485 A). |
| Cathode | Transient current exit point (bidirectional) | Completes surge path to ground or return rail; symmetrical with anode due to bidirectional construction. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or differential signal lines (e.g., USB D+/D−, RS-485) without polarity concerns. |
| 1500 W peak pulse power | Withstands IEC 61000-4-5 combination wave surges (4 kV, 2 Ω source) without degradation when mounted per recommended pad layout. |
| AEC-Q101 qualification | Validates suitability for automotive applications including body electronics, ADAS sensors, and infotainment interfaces. |
| MSL Level 1 rating | Allows unlimited floor life and standard reflow profile usage (peak 260 °C), eliminating bake requirements prior to assembly. |
| Glass passivated junction | Provides stable leakage performance (<1 μA at VWM) and long-term reliability under thermal cycling and humidity stress. |
Applications
| Automotive Sensor Protection | Industrial RS-485 Interface |
|---|---|
Use Scenario: Protecting LIN/CAN bus nodes and MEMS pressure sensors from load-dump and jump-start transients in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional TVS placed across differential signal pair or supply rail to clamp ±40 V surges within nanoseconds. Use Value: Prevents latch-up or gate oxide damage in automotive-grade microcontrollers and transceivers operating at 3.3 V or 5 V. |
Use Scenario: Safeguarding RS-485 transceivers in factory automation PLCs exposed to motor drive noise and grounding faults. IC Role / Device Role / Timing Role: Placed between A/B lines and ground to suppress common-mode surges while preserving signal integrity up to 10 Mbps. Use Value: Maintains data link uptime by limiting transient-induced bit errors and transceiver failure in harsh EMI environments. |
| Consumer USB Port Protection | Telecom DSL Line Protection |
Use Scenario: Shielding USB 2.0 data lines in smart home hubs from ESD events (>±15 kV contact discharge) and cable-induced surges. IC Role / Device Role / Timing Role: Low-capacitance bidirectional TVS installed adjacent to USB connector to minimize signal distortion. Use Value: Ensures USB enumeration reliability and prevents PHY layer damage without degrading rise/fall times. |
Use Scenario: Guarding ADSL/VDSL line drivers against lightning-induced longitudinal surges on twisted-pair telephone lines. IC Role / Device Role / Timing Role: Connected line-to-line and line-to-ground to absorb >1 kV common-mode transients per ITU-T K.20/K.21. Use Value: Extends service life of DSLAM front-end circuitry and avoids false disconnects during storm conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bidirectional TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ30CA | Same VWM (30 V), lower PPPM (600 W), SMB package (smaller footprint, higher RθJA = 90 °C/W) | Limited to lower-energy transients; unsuitable for IEC 61000-4-5 Level 4 compliance without derating | Select when board space is constrained and surge threat level is ≤ Level 2 per IEC 61000-4-5. |
| 1.5KE30CA | Same VWM (30 V), axial-leaded DO-201 package, identical 1500 W rating but slower response due to lead inductance | Not suitable for high-speed data lines; requires through-hole assembly and larger PCB real estate | Choose only for legacy through-hole designs or non-high-frequency power rail protection where layout density is not critical. |
Compared with SMBJ30CA and 1.5KE30CA, the 1.5SMC30CAHE3/57T delivers optimal balance of high surge robustness, SMT manufacturability, AEC-Q101 validation, and thermal performance - making it the preferred choice for new automotive and industrial designs requiring surface-mount reliability and standardized compliance.
Availability
1.5SMC30CAHE3/57T is available at Aetrix Electronics and suitable for automotive sensor modules, industrial RS-485 networks, and consumer USB interface protection requiring stable component supply, RoHS-compliant sourcing, and AEC-Q101 assurance.
Supply support for 1.5SMC30CAHE3/57T 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 protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The 1.5SMC Series targets high-energy transient suppression in automotive, industrial, and telecom systems, engineered to meet stringent AEC-Q101, UL 497B, and IEC 61000-4-5 requirements with consistent bidirectional performance.
FAQ
What is the clamping voltage of the 1.5SMC30CAHE3/57T at its rated peak pulse current?
The 1.5SMC30CAHE3/57T has a maximum clamping voltage (VC) of 41.4 V at its rated peak pulse current (IPPM) of 36.2 A, measured using the standard 10/1000 μs waveform. This value ensures downstream ICs rated for 3.3 V or 5 V logic remain within safe operating limits during surge events. The 1.5SMC30CAHE3/57T maintains this clamping performance bidirectionally and is validated per JEDEC test methods.
Is the 1.5SMC30CAHE3/57T qualified for automotive applications?
Yes, the 1.5SMC30CAHE3/57T carries the HE3 suffix, indicating it is RoHS-compliant and AEC-Q101 qualified. It undergoes stress testing including high-temperature operating life (HTOL), temperature cycling (TC), unbiased highly accelerated stress test (UHAST), and ESD per AEC-Q101 Rev H. The 1.5SMC30CAHE3/57T is approved for use in automotive body control modules, sensor interfaces, and infotainment systems.
What is the thermal resistance and power dissipation capability of the 1.5SMC30CAHE3/57T?
The 1.5SMC30CAHE3/57T has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on 8.0 mm × 8.0 mm copper pads. Its steady-state power dissipation (PD) is rated at 6.5 W at TA = 50 °C. Derating is required above 50 °C ambient, following the curve in Figure 2 of the Vishay datasheet 88303. The 1.5SMC30CAHE3/57T does not require external heatsinking for typical transient-duty applications.
How does the bidirectional design of the 1.5SMC30CAHE3/57T affect its circuit implementation?
The 1.5SMC30CAHE3/57T has no polarity marking and functions identically in both directions, simplifying layout for differential or AC-coupled signals. It can be placed directly across lines like RS-485 A/B or USB D+/D− without orientation concerns. Unlike unidirectional TVS diodes, the 1.5SMC30CAHE3/57T eliminates risk of incorrect placement and supports symmetrical surge suppression on floating or ground-referenced buses.
What packaging and reel options are available for the 1.5SMC30CAHE3/57T?
The 1.5SMC30CAHE3/57T is supplied in 7-inch plastic tape-and-reel format (code "57T") with 850 units per reel. It uses embossed carrier tape per EIA-481-D standards, compatible with standard SMT pick-and-place equipment. The "HE3" suffix confirms RoHS compliance and AEC-Q101 qualification; the "57T" denotes reel size and packaging - no additional moisture sensitivity labeling is required due to its MSL Level 1 rating.
1.5SMC30CAHE3/57T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- 1.5SMC, TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 25.6V
- Voltage - Breakdown (Min):
- 28.5V
- Voltage - Clamping (Max) @ Ipp:
- 41.4V
- Current - Peak Pulse (10/1000µs):
- 36.2A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCJ)
1.5SMC30CAHE3/57T FAQ
1.How can I place an order for 1.5SMC30CAHE3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC30CAHE3/57T 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 1.5SMC30CAHE3/57T reliable?
The price and inventory of 1.5SMC30CAHE3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC30CAHE3/57T is usually 5 days.
3.What payment methods are accepted for 1.5SMC30CAHE3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC30CAHE3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC30CAHE3/57T?
1.5SMC30CAHE3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC30CAHE3/57T 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 1.5SMC30CAHE3/57T?
For technical support, including 1.5SMC30CAHE3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC30CAHE3/57T requirements.
6.How does Aetrix verify that 1.5SMC30CAHE3/57T is sourced from the original manufacturer or authorized distributors?
All 1.5SMC30CAHE3/57T 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 1.5SMC30CAHE3/57T meets industry standards.
7.What is the process for return or replacement of 1.5SMC30CAHE3/57T?
All 1.5SMC30CAHE3/57T units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC30CAHE3/57T, 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 1.5SMC30CAHE3/57T part is unused and in its original packaging.
Return procedure for 1.5SMC30CAHE3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC30CAHE3/57T Tags
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