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Vishay General Semiconductor - Diodes Division 1.5SMC9.1CA-E3/57T
- Part No.:
- 1.5SMC9.1CA-E3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC9.1CA-E3/57T.pdf
- Description:
- TVS DIODE 7.78VWM 13.4VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:5,969
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Product details
Overview
1.5SMC9.1CA-E3/57T from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode designed for robust overvoltage protection in power and signal lines. It features a 9.1 V breakdown voltage (VBR = 8.65–9.55 V at IT = 1.0 mA), 7.78 V stand-off voltage (VWM), clamps to ≤13.4 V at 112 A peak pulse current (IPPM), and delivers 1500 W peak pulse power with 10/1000 μs waveform - deployed in automotive sensor interfaces, industrial I/O protection, and telecom line surge suppression.
For engineers reviewing the 1.5SMC9.1CA-E3/57T datasheet, 1.5SMC9.1CA-E3/57T pinout, 1.5SMC9.1CA-E3/57T application, or 1.5SMC9.1CA-E3/57T equivalent, key selection criteria include bidirectional clamping capability, low clamping ratio (VC/VBR ≈ 1.47), MSL Level 1 moisture sensitivity, RoHS-compliant matte tin terminations, and compatibility with automated SMT placement on DO-214AB footprints.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, enabling protection of AC-coupled or differential signal paths without polarity constraints. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1000 μA at VWM), while the low incremental surge resistance supports fast energy diversion during ESD or lightning-induced transients.
The device is rated for repetitive 10/1000 μs surges at 0.01% duty cycle and derates linearly above TA = 25 °C per Fig. 2, with thermal resistance RθJA = 75 °C/W (on 8.0 mm × 8.0 mm copper pads). Junction temperature range spans −65 °C to +150 °C, supporting under-hood automotive and industrial ambient conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 8.65 V / 9.55 V at IT = 1.0 mA - defines precise voltage threshold where avalanche conduction begins in either direction |
| VWM | 7.78 V - maximum continuous reverse voltage before significant leakage; sets safe operating margin below VBR |
| VC @ IPPM | ≤13.4 V at 112 A - clamping voltage limits downstream IC stress during worst-case 1500 W transient events |
| PPPM | 1500 W - peak pulse power handling with 10/1000 μs waveform, validated for lightning surge immunity (IEC 61000-4-5) |
| IPPM | 112 A - peak pulse current capacity determines survivability against high-energy transients |
| TJmax | +150 °C - enables operation in high-temperature environments such as engine control units or power supply rails |
| Package | SMC (DO-214AB) - industry-standard surface-mount outline with 7.75 mm × 6.22 mm footprint and 2.62 mm height |
Pinout & Package
Package: SMC (DO-214AB), molded plastic case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102; no polarity marking for bidirectional configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; symmetrical with cathode in bidirectional operation | Enables clamping during positive- or negative-going transients - no fixed anode/cathode orientation required |
| Cathode | Current exit terminal in forward bias; functionally identical to anode in bidirectional mode | Both terminals behave identically under reverse or forward surge - simplifies PCB layout for AC/differential lines |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Identical VBR, VC, and IPPM performance in both directions - eliminates need for polarity-aware placement |
| 1500 W peak pulse power | Withstands IEC 61000-4-5 Level 4 (4 kV surge) on 2 Ω source impedance without degradation |
| Low clamping ratio | VC/VBR ≈ 1.47 - minimizes overvoltage exposure to protected ICs compared to higher-ratio suppressors |
| MSL Level 1 rating | Unlimited floor life at ≤30 °C/85% RH - supports standard SMT reflow without baking or dry pack requirements |
| AEC-Q101 qualification option | Available in HE3/HM3 variants - meets stress test requirements for automotive electronics (e.g., infotainment, ADAS sensors) |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
|
Use Scenario: Protecting CAN FD and LIN bus transceivers from load dump and ISO 7637-2 pulses in vehicle body control modules. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed across differential signal pair or supply rail to shunt surge energy before it reaches PHY layer. Use Value: Clamps transients to ≤13.4 V within nanoseconds, preserving signal integrity and preventing latch-up in 5 V or 3.3 V transceivers. |
Use Scenario: Shielding analog input channels (e.g., 4–20 mA loops) in programmable logic controllers from field wiring surges and ESD. IC Role / Device Role / Timing Role: Primary front-end TVS on terminal block side, coordinated with series impedance and secondary filtering. Use Value: Absorbs up to 1500 W of transient energy without failure, maintaining measurement accuracy and system uptime in factory-floor environments. |
| Telecom Line Interface | Consumer Power Adapter Input |
|
Use Scenario: Safeguarding Ethernet PHY magnetics and PoE injectors against lightning-induced common-mode surges on outdoor cabling. IC Role / Device Role / Timing Role: Common-mode TVS across transformer center taps or data pairs to divert induced energy to chassis ground. Use Value: Symmetrical breakdown ensures balanced clamping on differential lines, reducing electromagnetic emissions during surge events. |
Use Scenario: Secondary-side overvoltage suppression on DC output rails of wall adapters powering USB-C peripherals and smart home hubs. IC Role / Device Role / Timing Role: Final-stage protector after primary-side MOV and secondary-side filter capacitors. Use Value: Fast response (<1 ns) and low VC prevent damage to sensitive USB PD controllers and Type-C port ICs during output short-circuit recovery. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ9.0CA | Lower PPPM (600 W), same VBR range (8.55–9.45 V), SMB package (smaller footprint, higher RθJA) | Better suited for space-constrained consumer electronics; not recommended for industrial lightning-level surges | Select when board area is critical and surge threat level is limited to IEC 61000-4-2 ESD only |
| 1.5KE9.1CA | Higher PPPM (1500 W), axial leaded DO-201 package, slower thermal response, no MSL rating | Requires through-hole assembly; unsuitable for automated SMT lines or high-density layouts | Choose only for legacy through-hole designs or prototyping where reflow compatibility is not required |
Compared with SMBJ9.0CA and 1.5KE9.1CA, the 1.5SMC9.1CA-E3/57T uniquely balances high-power surge handling, SMT manufacturability, and bidirectional symmetry in a moisture-insensitive DO-214AB package - making it optimal for production-grade automotive and industrial systems requiring AEC-Q101 readiness and zero-layout redesign risk.
Availability
1.5SMC9.1CA-E3/57T is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O protection, and telecom line surge suppression requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for 1.5SMC9.1CA-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 diodes, rectifiers, MOSFETs, and protection devices with emphasis on reliability, power efficiency, and automotive-grade qualification.
The 1.5SMC Series was developed specifically for high-energy transient suppression in harsh environments - targeting design-in across automotive, industrial automation, and telecommunications infrastructure where robustness and AEC-Q101 compliance are mandatory.
FAQ
What is the clamping voltage of the 1.5SMC9.1CA-E3/57T under maximum rated surge current?
The 1.5SMC9.1CA-E3/57T clamps to a maximum of 13.4 V when subjected to its rated peak pulse current of 112 A (10/1000 μs waveform). This value is measured per standard test conditions in the Vishay datasheet (Document Number: 88303, Rev. 09-Mar-2026) and reflects worst-case voltage seen by protected circuitry during surge events.
Is the 1.5SMC9.1CA-E3/57T suitable for automotive applications?
Yes - while the base 1.5SMC9.1CA-E3/57T is commercial-grade, the same die is offered in AEC-Q101 qualified variants (e.g., 1.5SMC9.1CAHE3_A). The 1.5SMC9.1CA-E3/57T shares identical electrical specs and SMC packaging, making it suitable for non-safety-critical automotive subsystems like body electronics and infotainment when qualified versions are unavailable.
How does the bidirectional nature of the 1.5SMC9.1CA-E3/57T affect PCB layout?
The 1.5SMC9.1CA-E3/57T has no polarity marking and performs identically in both directions, so PCB layout requires no orientation alignment. It can be placed across AC-coupled lines, differential pairs, or ungrounded rails without concern for anode/cathode assignment - simplifying routing and reducing assembly errors in high-volume manufacturing.
What is the maximum operating temperature for the 1.5SMC9.1CA-E3/57T?
The 1.5SMC9.1CA-E3/57T has a specified junction temperature range of −65 °C to +150 °C. Its thermal resistance RθJA is 75 °C/W when mounted on 8.0 mm × 8.0 mm copper pads, allowing reliable operation in under-hood automotive or industrial control cabinet environments where ambient temperatures exceed 105 °C.
Does the 1.5SMC9.1CA-E3/57T meet RoHS and halogen-free requirements?
Yes - the "E3" suffix in 1.5SMC9.1CA-E3/57T indicates RoHS-compliant construction with matte tin terminations. It meets JEDEC JESD201 Class 2 whisker resistance and UL 94 V-0 flammability standards. For halogen-free compliance, the M3 variant (e.g., 1.5SMC9.1CA-M3/57T) is available.
1.5SMC9.1CA-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):
- 7.78V
- Voltage - Breakdown (Min):
- 8.65V
- Voltage - Clamping (Max) @ Ipp:
- 13.4V
- Current - Peak Pulse (10/1000µs):
- 112A
- 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)
1.5SMC9.1CA-E3/57T FAQ
1.How can I place an order for 1.5SMC9.1CA-E3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC9.1CA-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 1.5SMC9.1CA-E3/57T reliable?
The price and inventory of 1.5SMC9.1CA-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 1.5SMC9.1CA-E3/57T is usually 5 days.
3.What payment methods are accepted for 1.5SMC9.1CA-E3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC9.1CA-E3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC9.1CA-E3/57T?
1.5SMC9.1CA-E3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC9.1CA-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 1.5SMC9.1CA-E3/57T?
For technical support, including 1.5SMC9.1CA-E3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC9.1CA-E3/57T requirements.
6.How does Aetrix verify that 1.5SMC9.1CA-E3/57T is sourced from the original manufacturer or authorized distributors?
All 1.5SMC9.1CA-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 1.5SMC9.1CA-E3/57T meets industry standards.
7.What is the process for return or replacement of 1.5SMC9.1CA-E3/57T?
All 1.5SMC9.1CA-E3/57T units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC9.1CA-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 1.5SMC9.1CA-E3/57T part is unused and in its original packaging.
Return procedure for 1.5SMC9.1CA-E3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC9.1CA-E3/57T Tags
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DESD3V3E1BL-7B
Diodes Incorporated
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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