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Vishay General Semiconductor - Diodes Division 1.5SMC36CAHE3/9AT
- Part No.:
- 1.5SMC36CAHE3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC36CAHE3/9AT.pdf
- Description:
- TVS DIODE 30.8VWM 49.9VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:400
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Product details
Overview
1.5SMC36CAHE3/9AT from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode designed for robust overvoltage protection in power and signal lines. It features a 36 V standoff voltage (VWM), 49.9 V clamping voltage (VC) at 30.1 A peak pulse current (IPPM), and 1500 W peak pulse power (PPPM) with 10/1000 μs waveform - deployed in automotive sensor interfaces, industrial I/O modules, and telecom line protection.
For engineers reviewing the 1.5SMC36CAHE3/9AT datasheet, 1.5SMC36CAHE3/9AT pinout, 1.5SMC36CAHE3/9AT application, or 1.5SMC36CAHE3/9AT equivalent, key selection criteria include bidirectional clamping symmetry, AEC-Q101 qualification for automotive use, SMC (DO-214AB) package thermal performance, and compliance with UL 497B surge protector standards.
Technical Context
This device operates as a voltage-clamped shunt protector: under transient overvoltage, it avalanches symmetrically in both directions to limit voltage across protected circuitry. Its glass-passivated junction ensures stable breakdown and low leakage (<1.0 μA at VWM), while MSL Level 1 rating supports lead-free reflow up to 260 °C.
Designed for repetitive surge events at 0.01% duty cycle, the 1.5SMC36CAHE3/9AT delivers fast response time (<1.0 ps), low incremental surge resistance, and thermal resistance of 75 °C/W (junction-to-ambient) on standard 8.0 mm × 8.0 mm copper pads - enabling reliable operation up to 150 °C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 30.8 V - maximum continuous reverse working voltage before conduction begins |
| VBR (Breakdown) | 34.2–37.8 V at 1.0 mA - guaranteed avalanche initiation range for bidirectional clamping |
| VC (Clamping) | 49.9 V at IPPM = 30.1 A - peak voltage seen by protected circuit during 10/1000 μs surge |
| PPPM | 1500 W - surge energy handling capacity per single 10/1000 μs pulse |
| ID (Leakage) | <1.0 μA at VWM - minimal standby power loss and signal integrity impact |
| TJ max. | +150 °C - enables deployment in under-hood automotive and high-temperature industrial environments |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, bidirectional configuration with no polarity marking - symmetrical anode/cathode terminals.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | Anode / Cathode (bidirectional) | Either terminal serves as anode or cathode depending on instantaneous polarity - no marking required |
| Terminal 2 | Anode / Cathode (bidirectional) | Electrically identical to Terminal 1; full symmetry enables placement without orientation check |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity constraints |
| AEC-Q101 qualification | Validated for automotive applications including engine control units and ADAS sensor interfaces |
| MSL Level 1 | Supports standard lead-free reflow profiles (peak 260 °C) without baking or special handling |
| UL 497B recognition | Meets Underwriters Laboratories requirements for telecom and data line surge protectors (File E136766) |
| Glass-passivated junction | Ensures stable VBR over lifetime and immunity to humidity-induced parameter drift |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump and ISO 7637-2 pulses in vehicle ECUs. IC Role / Device Role / Timing Role: Shunt-type transient suppressor placed directly at connector entry point to clamp surges before reaching sensitive interface ICs. Use Value: Maintains signal integrity under 10/1000 μs transients up to 1500 W while meeting AEC-Q101 stress test requirements. |
Use Scenario: Safeguarding 24 V DC digital input channels in programmable logic controllers against field-wiring induced surges and inductive kickback. IC Role / Device Role / Timing Role: Primary front-end TVS element on DIN-rail mounted I/O modules, coordinated with upstream fusing. Use Value: Limits clamped voltage to 49.9 V - well below 60 V absolute maximum ratings of common industrial interface ICs. |
| Telecom Line Interface | Consumer Power Adapter ESD Protection |
Use Scenario: Secondary-side surge suppression on Ethernet PHY power rails and RS-485 termination networks in base station equipment. IC Role / Device Role / Timing Role: Bidirectional clamping device placed between isolated DC-DC output and communication IC supply pins. Use Value: Symmetric response eliminates need for dual unidirectional devices, reducing BOM count and PCB area. |
Use Scenario: Input-stage transient protection on USB-C PD adapter secondary-side 5–20 V rails exposed to user-connect/disconnect events. IC Role / Device Role / Timing Role: Fast-acting shunt limiter absorbing ESD (IEC 61000-4-2) and lightning-induced surges (IEC 61000-4-5). Use Value: Sub-1.0 μA leakage at 30.8 V minimizes quiescent current draw in always-on power delivery circuits. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ36CA | Lower PPPM (600 W), same VWM/VC, SMB package (smaller footprint, higher RθJA = 100 °C/W) | Limited to lower-energy surges; unsuitable for automotive load dump where 1500 W is mandated | Select when space-constrained layouts prioritize footprint over surge margin |
| 1.5KE36CA | Through-hole DO-201 package, identical electrical specs but no AEC-Q101 qualification or MSL Level 1 rating | Not suitable for automated SMT production or automotive under-hood environments | Choose only for legacy through-hole designs or non-automotive industrial prototypes |
Compared with SMBJ36CA and 1.5KE36CA, the 1.5SMC36CAHE3/9AT uniquely combines 1500 W surge capability, AEC-Q101 qualification, and SMC package manufacturability - making it the only option qualified for volume automotive SMT production requiring UL 497B recognition and 0.01% duty-cycle surge endurance.
Availability
1.5SMC36CAHE3/9AT is available at Aetrix Electronics and suitable for automotive ECU design, industrial PLC I/O modules, telecom infrastructure power rails, and consumer USB-C adapter protection requiring stable component supply and long-term lifecycle support.
Supply support for 1.5SMC36CAHE3/9AT 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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and application-specific performance.
The 1.5SMC Series targets high-energy transient suppression in automotive, industrial, and telecom systems - engineered for AEC-Q101 compliance, UL recognition, and robust SMT manufacturability in harsh environments.
FAQ
What does the "CA" suffix mean in 1.5SMC36CAHE3/9AT?
The "CA" suffix in 1.5SMC36CAHE3/9AT indicates a bidirectional configuration - meaning the device provides symmetrical transient voltage clamping in both polarities, eliminating the need for polarity-aware placement on PCBs. This differs from unidirectional variants (e.g., 1.5SMC36A) that require cathode-band orientation. The CA version is specified for use in AC-coupled or floating signal paths.
Is 1.5SMC36CAHE3/9AT qualified for automotive applications?
Yes, 1.5SMC36CAHE3/9AT is AEC-Q101 qualified - verified for automotive-grade reliability including temperature cycling, highly accelerated life testing (HALT), and ESD robustness. Its HE3 suffix explicitly denotes RoHS-compliant and AEC-Q101 qualified construction, making it suitable for engine control units, ADAS sensors, and body electronics where sustained operation at 150 °C junction temperature is required.
What is the clamping voltage of 1.5SMC36CAHE3/9AT at rated surge current?
The 1.5SMC36CAHE3/9AT has a maximum clamping voltage (VC) of 49.9 V at 30.1 A peak pulse current (IPPM), measured using the standard 10/1000 μs double-exponential surge waveform. This value defines the upper voltage limit imposed on protected circuitry during worst-case transient events and is critical for ensuring downstream ICs remain within their absolute maximum ratings.
Does 1.5SMC36CAHE3/9AT meet UL safety standards?
Yes, 1.5SMC36CAHE3/9AT is UL recognized under file number E136766 for both unidirectional and bidirectional configurations, complying with UL 497B for telecommunications primary protectors. This certification validates its suitability in telecom line interfaces, PoE injectors, and other safety-critical surge protection applications requiring third-party verification.
What is the thermal resistance of 1.5SMC36CAHE3/9AT in typical mounting conditions?
The 1.5SMC36CAHE3/9AT exhibits a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal. This value assumes standard FR-4 PCB layout and natural convection cooling - essential for calculating safe power derating above 25 °C ambient and verifying thermal margin in enclosed automotive or industrial enclosures.
1.5SMC36CAHE3/9AT 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):
- 30.8V
- Voltage - Breakdown (Min):
- 34.2V
- Voltage - Clamping (Max) @ Ipp:
- 49.9V
- Current - Peak Pulse (10/1000µs):
- 30.1A
- 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)
1.5SMC36CAHE3/9AT FAQ
1.How can I place an order for 1.5SMC36CAHE3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC36CAHE3/9AT 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 1.5SMC36CAHE3/9AT reliable?
The price and inventory of 1.5SMC36CAHE3/9AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC36CAHE3/9AT is usually 5 days.
3.What payment methods are accepted for 1.5SMC36CAHE3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC36CAHE3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC36CAHE3/9AT?
1.5SMC36CAHE3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC36CAHE3/9AT 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 1.5SMC36CAHE3/9AT?
For technical support, including 1.5SMC36CAHE3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC36CAHE3/9AT requirements.
6.How does Aetrix verify that 1.5SMC36CAHE3/9AT is sourced from the original manufacturer or authorized distributors?
All 1.5SMC36CAHE3/9AT 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 1.5SMC36CAHE3/9AT meets industry standards.
7.What is the process for return or replacement of 1.5SMC36CAHE3/9AT?
All 1.5SMC36CAHE3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC36CAHE3/9AT, 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 1.5SMC36CAHE3/9AT part is unused and in its original packaging.
Return procedure for 1.5SMC36CAHE3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC36CAHE3/9AT Tags
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