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Vishay General Semiconductor - Diodes Division 1.5SMC7.5CA-E3/9AT
- Part No.:
- 1.5SMC7.5CA-E3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC7.5CA-E3/9AT.pdf
- Description:
- TVS DIODE 6.4VWM 11.3VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:8,619
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Product details
Overview
1.5SMC7.5CA-E3/9AT from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMC (DO-214AB) package, designed for clamping voltage transients on signal or power lines. It features 7.5 V standoff voltage (VWM), 11.3 V maximum clamping voltage at 133 A peak pulse current, and 1500 W peak pulse power capability with 10/1000 µs waveform - ideal for protecting automotive sensor interfaces and industrial I/O ports.
For engineers reviewing the 1.5SMC7.5CA-E3/9AT datasheet, 1.5SMC7.5CA-E3/9AT pinout, 1.5SMC7.5CA-E3/9AT application, or 1.5SMC7.5CA-E3/9AT equivalent, key selection criteria include bidirectional clamping performance, low clamping ratio (VC/VWM = 1.77), MSL Level 1 moisture sensitivity, RoHS-compliant matte tin plating, and compatibility with automated SMT assembly on standard PCB pads.
Technical Context
This device operates as a voltage-clamped surge protector with symmetrical breakdown behavior in both polarities due to its bidirectional construction. Its glass-passivated junction ensures stable avalanche characteristics and fast response time (<1 ns), while the SMC package provides robust thermal dissipation (RθJL = 15 °C/W) under repetitive transient stress.
The 1.5SMC7.5CA-E3/9AT complies with AEC-Q101 when ordered with HE3/HM3 suffixes, but the -E3/9AT variant is commercial-grade. It delivers 133 A peak pulse current (IPPM) at 11.3 V clamping voltage, with reverse leakage <500 µA at 6.4 V and temperature coefficient of VBR = +0.061 %/°C - enabling predictable performance across automotive and industrial ambient ranges.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 6.4 V - maximum continuous reverse voltage before conduction begins; defines safe operating margin for 5 V logic or sensor supply rails. |
| VBR (Breakdown, min/max) | 7.13 V / 7.88 V at 10 mA - tight 10.5 % tolerance ensures consistent turn-on across production lots. |
| VC (Clamping, at IPPM) | 11.3 V - limits transient-induced overvoltage to safe levels for downstream 12 V tolerant ICs. |
| IPPM (Peak Pulse Current) | 133 A - supports high-energy surges per 10/1000 µs waveform without degradation. |
| PPPM (Peak Pulse Power) | 1500 W - enables protection against lightning-induced transients and inductive switching spikes. |
| TJ max. | +150 °C - allows operation in under-hood automotive environments and enclosed industrial enclosures. |
| Package | SMC (DO-214AB) - standardized surface-mount outline with 8.0 mm × 8.0 mm copper pad requirement for thermal reliability. |
Pinout & Package
Package: SMC (DO-214AB), molded plastic case with matte tin-plated leads; polarity-unmarked for bidirectional operation; meets UL 94 V-0 flammability rating and J-STD-002 solderability standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (negative polarity) | Conducts during negative-going surges; connects to protected line or ground reference depending on circuit topology. |
| Cathode | Transient current entry (positive polarity) | Conducts during positive-going surges; symmetric role to Anode in bidirectional configuration. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity concerns. |
| 1500 W peak pulse power | Handles high-energy transients from relay coil flyback or ESD events without failure. |
| Low clamping ratio (VC/VWM = 1.77) | Minimizes voltage overshoot during clamping, reducing stress on downstream 12 V-rated components. |
| MSL Level 1 rating | Permits unlimited floor life and reflow at 260 °C peak, eliminating bake requirements for SMT manufacturing. |
| Glass-passivated junction | Ensures stable breakdown voltage and long-term reliability under repeated surge stress. |
Applications
| Automotive Sensor Interface | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN bus transceivers and analog sensor inputs (e.g., temperature, pressure) from load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed between signal line and chassis ground to shunt transient energy. Use Value: Limits induced voltage to ≤11.3 V during 133 A surges, preserving signal integrity and preventing latch-up in 5 V/12 V interface ICs. |
Use Scenario: Safeguarding digital input modules in programmable logic controllers exposed to inductive switching noise from solenoids and contactors. IC Role / Device Role / Timing Role: Fast-acting TVS placed across input terminals to suppress 10/1000 µs transients before they reach optocoupler or microcontroller inputs. Use Value: Clamps 1500 W surges within nanoseconds, maintaining functional safety compliance (IEC 61000-4-5) without derating at +85 °C ambient. |
| Consumer USB Port Protection | Telecom Line Interface |
Use Scenario: Adding secondary surge immunity to USB 2.0 data lines (D+/D−) in set-top boxes and smart displays subjected to ESD and cable discharge events. IC Role / Device Role / Timing Role: Low-capacitance bidirectional TVS placed differential across data pair to suppress common-mode transients. Use Value: Delivers sub-12 V clamping with <500 µA leakage at 6.4 V, ensuring USB signal integrity and full-speed timing compliance. |
Use Scenario: Protecting Ethernet PHY interfaces and analog telephone line drivers from lightning-induced surges in VoIP gateways and DSL modems. IC Role / Device Role / Timing Role: Primary-level TVS mounted at connector entry point to divert >1 kV transients before reaching isolation transformers or line drivers. Use Value: Withstands 133 A peak current and maintains stable VBR over temperature, supporting GR-1089-CORE telecom surge immunity requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ7.5CA | Lower peak power (600 W), smaller SMB package (DO-214AA), higher RθJA (100 °C/W) | Suitable only for lower-energy transients; limited thermal margin in high-duty-cycle environments | Select when board space is constrained and surge energy does not exceed 600 W. |
| 1.5KE7.5CA | Through-hole TO-204AE (DO-41) package, identical electrical specs but no SMT compatibility | Requires wave soldering or hand assembly; unsuitable for fully automated production | Choose only for legacy through-hole designs or prototyping where rework flexibility is prioritized. |
Compared with SMBJ7.5CA and 1.5KE7.5CA, the 1.5SMC7.5CA-E3/9AT offers superior thermal performance (RθJL = 15 °C/W vs. >30 °C/W), higher surge handling (1500 W vs. 600 W or 1500 W with inferior layout dependency), and full SMT manufacturability - making it optimal for high-reliability automotive and industrial volume production.
Availability
1.5SMC7.5CA-E3/9AT is available at Aetrix Electronics and suitable for automotive sensor protection, industrial PLC I/O hardening, and telecom line interface surge suppression requiring stable component supply, RoHS compliance, and tape-and-reel delivery for SMT lines.
Supply support for 1.5SMC7.5CA-E3/9AT 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, power efficiency, and automotive qualification.
The 1.5SMC Series was developed for high-power surface-mount transient suppression in space-constrained, high-reliability applications - targeting automotive, industrial, and telecom systems where robustness against ISO 7637-2 and IEC 61000-4-5 threats is mandatory.
FAQ
What is the clamping voltage of the 1.5SMC7.5CA-E3/9AT under maximum rated surge current?
The 1.5SMC7.5CA-E3/9AT has a maximum clamping voltage (VC) of 11.3 V at 133 A peak pulse current (IPPM) with a 10/1000 µs waveform. This value is guaranteed per Vishay's datasheet (Document Number 88303, Rev. 09-Mar-2026) and reflects worst-case performance across temperature and production lot variation. The 1.5SMC7.5CA-E3/9AT maintains this clamping level while dissipating 1500 W transient energy, making it suitable for protecting 12 V-tolerant circuits.
Is the 1.5SMC7.5CA-E3/9AT RoHS-compliant and lead-free?
Yes, the 1.5SMC7.5CA-E3/9AT carries the "E3" suffix, indicating full RoHS compliance and commercial-grade qualification per Vishay's ordering nomenclature. Its matte tin-plated leads meet J-STD-002 solderability standards, and the molding compound satisfies UL 94 V-0 flammability requirements. The 1.5SMC7.5CA-E3/9AT contains no lead, mercury, cadmium, hexavalent chromium, PBB, or PBDE above threshold limits defined in Directive 2011/65/EU.
Does the 1.5SMC7.5CA-E3/9AT have AEC-Q101 qualification?
No, the 1.5SMC7.5CA-E3/9AT is not AEC-Q101 qualified. That qualification applies only to variants with "HE3" or "HM3" suffixes (e.g., 1.5SMC7.5CAHE3_A). The 1.5SMC7.5CA-E3/9AT is commercial-grade and intended for industrial, consumer, and telecom applications where automotive-grade stress testing is not required. For automotive use, specify 1.5SMC7.5CAHE3_A/I or equivalent AEC-Q101 variants.
What is the standoff voltage (VWM) and why is it critical for selecting the 1.5SMC7.5CA-E3/9AT?
The 1.5SMC7.5CA-E3/9AT has a standoff voltage (VWM) of 6.4 V - the maximum DC or RMS voltage that can be continuously applied without triggering conduction. This parameter ensures reliable operation on 5 V systems with margin for ripple and tolerance drift. Selecting a VWM ≥10–20 % above nominal line voltage prevents false triggering while retaining sufficient headroom for transient suppression. The 1.5SMC7.5CA-E3/9AT's 6.4 V VWM makes it appropriate for 5 V logic, sensor supplies, and USB VBUS monitoring paths.
How does the bidirectional design of the 1.5SMC7.5CA-E3/9AT affect its placement in circuit layouts?
The 1.5SMC7.5CA-E3/9AT has no polarity marking and conducts symmetrically in both directions, allowing placement across any two nodes subject to bidirectional transients - such as differential signal pairs (RS-485, CAN), AC-coupled lines, or floating grounds. Unlike unidirectional TVS diodes, it eliminates orientation errors during SMT placement and simplifies layout for balanced protection schemes. Its SMC (DO-214AB) footprint requires 8.0 mm × 8.0 mm copper pads per terminal to sustain 1500 W surges, as specified in Vishay's thermal guidelines for the 1.5SMC7.5CA-E3/9AT.
1.5SMC7.5CA-E3/9AT 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):
- 6.4V
- Voltage - Breakdown (Min):
- 7.13V
- Voltage - Clamping (Max) @ Ipp:
- 11.3V
- Current - Peak Pulse (10/1000µs):
- 133A
- 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)
1.5SMC7.5CA-E3/9AT FAQ
1.How can I place an order for 1.5SMC7.5CA-E3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC7.5CA-E3/9AT 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 1.5SMC7.5CA-E3/9AT reliable?
The price and inventory of 1.5SMC7.5CA-E3/9AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC7.5CA-E3/9AT is usually 5 days.
3.What payment methods are accepted for 1.5SMC7.5CA-E3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC7.5CA-E3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC7.5CA-E3/9AT?
1.5SMC7.5CA-E3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC7.5CA-E3/9AT 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 1.5SMC7.5CA-E3/9AT?
For technical support, including 1.5SMC7.5CA-E3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC7.5CA-E3/9AT requirements.
6.How does Aetrix verify that 1.5SMC7.5CA-E3/9AT is sourced from the original manufacturer or authorized distributors?
All 1.5SMC7.5CA-E3/9AT 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 1.5SMC7.5CA-E3/9AT meets industry standards.
7.What is the process for return or replacement of 1.5SMC7.5CA-E3/9AT?
All 1.5SMC7.5CA-E3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC7.5CA-E3/9AT, 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 1.5SMC7.5CA-E3/9AT part is unused and in its original packaging.
Return procedure for 1.5SMC7.5CA-E3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC7.5CA-E3/9AT Tags
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