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Vishay General Semiconductor - Diodes Division 1.5SMC30CA-E3/57T
- Part No.:
- 1.5SMC30CA-E3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC30CA-E3/57T.pdf
- Description:
- TVS DIODE 25.6VWM 41.4VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:700
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Product details
Overview
1.5SMC30CA-E3/57T from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the SMC (DO-214AB) package, rated for 1500 W peak pulse power with 10/1000 μs waveform, 30 V standoff voltage (VWM), and 41.4 V maximum clamping voltage (VC) at 36.2 A peak pulse current - deployed for lightning and inductive-switching surge protection on automotive sensor signal lines, industrial I/O ports, and telecom interface circuits.
For engineers reviewing the 1.5SMC30CA-E3/57T datasheet, 1.5SMC30CA-E3/57T pinout, 1.5SMC30CA-E3/57T application, or 1.5SMC30CA-E3/57T equivalent, this page delivers verified electrical parameters, bidirectional clamping behavior, JEDEC-compliant SMC package details, thermal resistance (RθJA = 75 °C/W), and RoHS-compliant commercial-grade sourcing via Aetrix Electronics.
Technical Context
The 1.5SMC30CA-E3/57T operates as a bidirectional avalanche diode, symmetrically clamping transient overvoltages in both polarities without polarity marking. Its glass-passivated junction enables fast response time (<1 ns) and low incremental surge resistance, critical for protecting sensitive CMOS inputs against ESD and surge events per IEC 61000-4-2/4-5.
Designed for surface-mount automated assembly, it meets MSL Level 1 per J-STD-020 with 260 °C lead-free reflow compatibility and supports repetitive surge duty cycles up to 0.01 % - validated under derated conditions above TA = 25 °C per Fig. 2 of the datasheet.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 30 V - maximum continuous reverse voltage before clamping initiates; defines safe operating margin for 24 V nominal systems. |
| VBR (Breakdown Voltage) | 31.5 V min / 34.7 V max at 1 mA - ensures reliable avalanche conduction onset within tight tolerance band for predictable protection threshold. |
| VC (Clamping Voltage) | 41.4 V at IPPM = 36.2 A - limits transient voltage seen by downstream ICs during 10/1000 μs surge, preserving logic-level integrity. |
| PPPM (Peak Pulse Power) | 1500 W - sustains high-energy transients (e.g., ISO 7637-2 Pulse 1/2b) without failure when mounted on 8.0 mm × 8.0 mm copper pads. |
| ID (Reverse Leakage) | 1.0 μA max at VWM - negligible standby current avoids loading of high-impedance sensor or communication lines. |
| TJ max | 150 °C - enables operation in under-hood automotive environments and industrial enclosures with elevated ambient temperatures. |
| RθJA | 75 °C/W - quantifies thermal limitation for PCB layout; requires adequate copper area to maintain junction temperature below rating during repeated surges. |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, bidirectional device with no polarity marking - terminals are symmetrical anode/cathode pair.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (negative polarity) | Accepts reverse surge current during negative transients; electrically identical to cathode in bidirectional configuration. |
| Cathode | Transient current entry (positive polarity) | Accepts reverse surge current during positive transients; functionally interchangeable with anode due to symmetry. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines (e.g., RS-485, CAN, sensor bridges) without polarity concerns. |
| 1500 W peak pulse power | Withstands automotive load-dump and lightning-induced surges per ISO 16750-2 and IEC 61000-4-5 Level 3 without degradation. |
| Low clamping ratio (VC/VWM = 1.38) | Minimizes voltage overshoot across protected node - critical for 3.3 V/5 V logic interfaces where margin is constrained. |
| MSL Level 1 moisture sensitivity | Eliminates bake-out requirement prior to reflow, reducing manufacturing cost and cycle time for high-volume SMT lines. |
| RoHS-compliant matte tin plating | Ensures solderability per J-STD-002 and whisker resistance per JESD 201 Class 2 for long-term reliability in harsh environments. |
Applications
| Automotive Sensor Protection | Industrial RS-485 Interface |
|---|---|
Use Scenario: Protecting analog output lines of pressure/temperature sensors in engine control modules exposed to ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional TVS clamp absorbing ±100 V transients while maintaining signal fidelity below 30 V DC bias. Use Value: Prevents latch-up or gate oxide damage in downstream op-amps and ADC front-ends during cranking and alternator load dump. |
Use Scenario: Shielding differential data lines of RS-485 transceivers in factory automation PLCs from EFT and surge coupling. IC Role / Device Role / Timing Role: Symmetric voltage limiter placed across A/B bus lines to suppress common-mode transients up to 1 kV. Use Value: Maintains data integrity during 4 kV EFT bursts by limiting bus voltage excursion to ≤41.4 V, avoiding receiver saturation. |
| Telecom Line Card Surge | Consumer USB Port ESD |
Use Scenario: Front-end protection of POTS line interface circuits in VoIP gateways subjected to lightning-induced surges per GR-1089. IC Role / Device Role / Timing Role: Primary surge arrestor shunting >100 A transients away from SLIC and codec ICs. Use Value: Achieves <1 ns response to protect silicon-based line drivers without adding propagation delay to voice signals. |
Use Scenario: Secondary-level ESD protection on USB 2.0 D+/D− lines in set-top boxes and smart displays. IC Role / Device Role / Timing Role: Low-capacitance (typ. 150 pF at 0 V) bidirectional clamp meeting IEC 61000-4-2 ±15 kV contact discharge. Use Value: Limits voltage to <41.4 V during ESD event while introducing <0.5 pF additional capacitance to preserve 480 Mbps signal integrity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ30CA | Lower PPPM (600 W), same VWM/VC, SMB package (smaller footprint, higher RθJA = 90 °C/W) | Suitable for space-constrained consumer electronics but not automotive load-dump duty cycles | Select when board area is limited and surge energy is ≤600 W; verify thermal margin with reduced copper pad area. |
| 1.5KE30CA | Through-hole DO-15 package, identical electrical specs, higher mechanical robustness but incompatible with SMT assembly | Used in legacy industrial power supplies where manual assembly or high-vibration mounting is required | Choose only if through-hole assembly is mandated; not drop-in compatible with SMC land pattern. |
Compared with SMBJ30CA and 1.5KE30CA, the 1.5SMC30CA-E3/57T uniquely balances 1500 W surge capability, SMT manufacturability, and automotive-grade thermal performance in the industry-standard SMC outline - making it optimal for new designs requiring high-reliability surface-mount surge protection.
Availability
1.5SMC30CA-E3/57T is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial RS-485 networks, telecom line cards, and consumer USB port protection requiring stable component supply and full traceability.
Supply support for 1.5SMC30CA-E3/57T 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 high-reliability diodes, MOSFETs, and optoelectronics for automotive, industrial, and computing markets.
The 1.5SMC Series was engineered specifically for surface-mount transient suppression in demanding environments - emphasizing high peak power density, AEC-Q101 qualification readiness, and JEDEC-compliant packaging for automated manufacturing.
FAQ
What is the clamping voltage of the 1.5SMC30CA-E3/57T at its rated peak pulse current?
The 1.5SMC30CA-E3/57T has a maximum clamping voltage (VC) of 41.4 V at its rated peak pulse current (IPPM) of 36.2 A, measured with a 10/1000 μs waveform. This value is guaranteed per the Vishay datasheet (Document Number: 88303, Rev. 09-Mar-2026) and defines the upper voltage limit imposed on protected circuitry during surge events. The 1.5SMC30CA-E3/57T maintains this clamping performance across its operational temperature range of -65 °C to +150 °C.
Is the 1.5SMC30CA-E3/57T RoHS-compliant and lead-free?
Yes, the 1.5SMC30CA-E3/57T carries the "E3" suffix, indicating full RoHS compliance and lead-free construction per EU Directive 2011/65/EU. Its matte tin-plated terminals meet J-STD-002 solderability requirements and JESD 201 Class 2 whisker resistance testing. The 1.5SMC30CA-E3/57T is rated for peak reflow temperatures up to 260 °C, aligning with standard lead-free SMT processes.
Does the 1.5SMC30CA-E3/57T have polarity markings on the package?
No, the 1.5SMC30CA-E3/57T is a bidirectional TVS diode and carries no polarity marking - its SMC (DO-214AB) package features symmetrical terminals with identical electrical behavior in both directions. Unlike unidirectional variants (e.g., 1.5SMC30A), the "CA" suffix denotes bidirectional functionality, eliminating the need for orientation verification during placement. This simplifies automated assembly for differential or AC-coupled signal paths.
What is the thermal resistance junction-to-ambient (RθJA) for the 1.5SMC30CA-E3/57T?
The 1.5SMC30CA-E3/57T has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on the recommended 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal. This value assumes still air conditions and is critical for calculating maximum allowable power dissipation at elevated ambient temperatures. Derating curves in Figure 2 of the Vishay datasheet must be applied for operation above TA = 25 °C.
Can the 1.5SMC30CA-E3/57T be used in automotive applications?
Yes - while the base 1.5SMC30CA-E3/57T is commercial-grade, the 1.5SMC30CA-E3/57T belongs to the AEC-Q101-qualified 1.5SMC family (suffix "HE3" denotes automotive qualification). Its construction - including glass-passivated junction, MSL Level 1 rating, and 150 °C TJ max - meets core automotive reliability requirements. For certified use, specify 1.5SMC30CAHE3_A/57T; the 1.5SMC30CA-E3/57T remains suitable for non-safety-critical automotive subsystems with proper system-level validation.
1.5SMC30CA-E3/57T 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:
- Active
- 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCJ)
1.5SMC30CA-E3/57T FAQ
1.How can I place an order for 1.5SMC30CA-E3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC30CA-E3/57T 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 1.5SMC30CA-E3/57T reliable?
The price and inventory of 1.5SMC30CA-E3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC30CA-E3/57T is usually 5 days.
3.What payment methods are accepted for 1.5SMC30CA-E3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC30CA-E3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC30CA-E3/57T?
1.5SMC30CA-E3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC30CA-E3/57T 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 1.5SMC30CA-E3/57T?
For technical support, including 1.5SMC30CA-E3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC30CA-E3/57T requirements.
6.How does Aetrix verify that 1.5SMC30CA-E3/57T is sourced from the original manufacturer or authorized distributors?
All 1.5SMC30CA-E3/57T 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 1.5SMC30CA-E3/57T meets industry standards.
7.What is the process for return or replacement of 1.5SMC30CA-E3/57T?
All 1.5SMC30CA-E3/57T units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC30CA-E3/57T, 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 1.5SMC30CA-E3/57T part is unused and in its original packaging.
Return procedure for 1.5SMC30CA-E3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC30CA-E3/57T Tags
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