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Vishay General Semiconductor - Diodes Division 1.5SMC36AHE3/9AT
- Part No.:
- 1.5SMC36AHE3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC36AHE3/9AT.pdf
- Description:
- TVS DIODE 30.8VWM 49.9VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:9,160
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Product details
Overview
1.5SMC36AHE3/9AT from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode designed for robust overvoltage protection in power and signal lines. It features a 36 V breakdown voltage (VBR = 34.2–37.8 V at 1 mA), 30.8 V standoff voltage (VWM), clamps to ≤49.9 V at 30.1 A peak pulse current, and delivers 1500 W peak pulse power with a 10/1000 µs waveform - used in automotive sensor interfaces and industrial I/O protection.
For engineers reviewing the 1.5SMC36AHE3/9AT datasheet, 1.5SMC36AHE3/9AT pinout, 1.5SMC36AHE3/9AT application, or 1.5SMC36AHE3/9AT equivalent, key selection criteria include unidirectional polarity, SMC (DO-214AB) package compatibility, AEC-Q101 qualification, low clamping ratio (VC/VBR ≈ 1.32), and thermal resistance (RθJA = 75 °C/W) for board-level surge resilience.
Technical Context
This TVS diode operates as a clamping device that remains high-impedance below VWM (30.8 V) and rapidly transitions to low-impedance conduction above VBR (min 34.2 V), limiting transient voltages to ≤49.9 V at 30.1 A. Its glass-passivated junction ensures stable avalanche characteristics and fast response time (<1 ns).
Designed for repetitive surge events at 0.01% duty cycle, it supports peak forward surge current (IFSM) up to 200 A (8.3 ms half-sine) and operates across -65 °C to +150 °C junction temperature. The cathode-band-marked SMC package enables automated placement and meets J-STD-020 MSL Level 1 (260 °C peak reflow).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 34.2 V / 37.8 V at 1 mA - defines precise avalanche initiation threshold for reliable clamping onset |
| VWM | 30.8 V - maximum continuous reverse operating voltage before leakage exceeds 1 µA |
| VC @ IPPM | ≤49.9 V at 30.1 A - clamped voltage during 1500 W transient, determining protected circuit stress level |
| PPPM | 1500 W (10/1000 µs) - peak surge energy handling capacity under standardized lightning/surge test waveform |
| IPPM | 30.1 A - maximum non-repetitive peak pulse current the device safely conducts without failure |
| RθJA | 75 °C/W - thermal resistance from junction to ambient, guiding PCB copper pad design for thermal management |
| TJ max | +150 °C - maximum allowable junction temperature, enabling operation in under-hood automotive environments |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, molded plastic case with matte tin-plated leads; dimensions 7.75 mm × 6.22 mm × 2.62 mm (L × W × H); polarity indicated by cathode band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side connection point | Connected to ground or low-voltage reference; completes conduction path during reverse-biased transients |
| Cathode | High-side connection point | Connected to protected line (e.g., 24 V rail or CAN bus); band marking identifies this terminal on PCB layout |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, humidity, and mechanical shock per JESD22 standards |
| 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 ≈ 1.32) | Minimizes voltage overshoot during clamping, reducing stress on downstream MOSFETs or microcontrollers |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and standard reflow profiles up to 260 °C peak, eliminating bake requirements |
| Glass-passivated junction | Ensures stable VBR tolerance and long-term parameter stability under thermal and electrical stress |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting 12 V/24 V analog sensor outputs (e.g., pressure, temperature) from load dump and inductive switching transients in engine control units. IC Role / Device Role / Timing Role: Unidirectional TVS placed between sensor signal line and chassis ground, clamping transients within nanoseconds. Use Value: Prevents damage to precision op-amps and ADC inputs by limiting voltage to ≤49.9 V during 30.1 A surges, preserving measurement integrity. |
Use Scenario: Safeguarding digital input modules in programmable logic controllers exposed to field wiring surges from motor contactors or solenoids. IC Role / Device Role / Timing Role: Standoff protection on 24 V DC input channels, absorbing repetitive 10/1000 µs transients induced by relay bounce. Use Value: Enables >100,000 surge cycles at rated power due to low incremental surge resistance and stable thermal performance. |
| Telecom Power Rail Protection | Consumer Power Adapter ESD/Surge |
Use Scenario: Secondary-side overvoltage suppression on 48 V PoE-powered equipment front-end circuits subject to lightning-induced surges. IC Role / Device Role / Timing Role: Primary clamping element on DC supply rail, coordinated with upstream MOVs and fuses for staged protection. Use Value: Fast <1 ns response ensures clamping occurs before sensitive DC-DC converters experience overvoltage stress. |
Use Scenario: Input-stage surge protection in USB-C PD adapters where compact size and high-energy absorption are critical. IC Role / Device Role / Timing Role: Unidirectional TVS on primary-side rectified output, suppressing differential-mode transients from AC line coupling. Use Value: SMC package footprint (7.75 mm × 6.22 mm) fits tight layouts while delivering 1500 W capability - superior energy density vs. SMA alternatives. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ36A-E3/57T | Same VBR range (34.2–37.8 V) but lower PPPM (400 W), SMA package (smaller, higher RθJA = 100 °C/W) | Lower energy handling limits use to sub-1 kV surge environments; unsuitable for IEC 61000-4-5 Level 4 | Select when space constraints prohibit SMC and surge threat level is limited to ESD or low-energy switching noise. |
| 1.5KE36A | Through-hole DO-201 package, identical electrical specs (VBR, VC, PPPM), but no AEC-Q101 qualification or MSL Level 1 rating | Not suitable for automated SMT production or automotive under-hood applications requiring reflow compatibility | Choose only for legacy through-hole designs or prototyping where RoHS-compliant SMT is not required. |
Compared with SMAJ36A-E3/57T and 1.5KE36A, the 1.5SMC36AHE3/9AT uniquely combines AEC-Q101 qualification, 1500 W surge rating, and SMC package manufacturability - making it the only option qualified for volume automotive electronics and industrial SMT production with full surge compliance.
Availability
1.5SMC36AHE3/9AT is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC I/O cards, and telecom power supplies requiring stable component supply, AEC-Q101 validation, and high-reliability surge immunity.
Supply support for 1.5SMC36AHE3/9AT 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, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The 1.5SMC Series was developed to deliver high-power, surface-mount TVS protection for automotive, industrial, and telecom systems where compact size, AEC-Q101 compliance, and repeatable clamping performance are mandatory.
FAQ
What is the standoff voltage (VWM) of the 1.5SMC36AHE3/9AT?
The 1.5SMC36AHE3/9AT has a maximum reverse standoff voltage (VWM) of 30.8 V. This means it remains non-conductive and exhibits ≤1 µA leakage current up to this voltage, ensuring minimal interference with normal 24 V or 36 V system operation while providing margin before avalanche conduction begins at VBR ≥ 34.2 V.
Is the 1.5SMC36AHE3/9AT AEC-Q101 qualified?
Yes, the 1.5SMC36AHE3/9AT is AEC-Q101 qualified. The "HE3" suffix explicitly denotes RoHS-compliant construction with full AEC-Q101 stress testing for automotive applications, including temperature cycling, high-temperature operating life, and mechanical shock - confirmed in Vishay document 88303, revision 09-Mar-2026.
What does the "9AT" in 1.5SMC36AHE3/9AT indicate?
The "9AT" suffix specifies the packaging format: 13-inch diameter plastic tape and reel, containing 3500 units per reel. This format supports high-volume SMT assembly and is compatible with standard pick-and-place equipment, distinguishing it from the "57T" (7-inch reel, 850 units) variant.
How does the clamping voltage (VC) of the 1.5SMC36AHE3/9AT compare to its breakdown voltage?
The 1.5SMC36AHE3/9AT clamps to ≤49.9 V at 30.1 A peak pulse current, while its minimum breakdown voltage is 34.2 V. This yields a clamping ratio (VC/VBR(min)) of approximately 1.32 - a low value indicating efficient voltage limiting and reduced stress on downstream components compared to higher-ratio TVS devices.
Can the 1.5SMC36AHE3/9AT be used in bidirectional configurations?
No, the 1.5SMC36AHE3/9AT is unidirectional only, as indicated by the "A" suffix (vs. "CA" for bidirectional). It conducts only when the cathode is positive relative to the anode. For bidirectional protection, use the 1.5SMC36CAHE3/9AT variant, which provides symmetrical clamping in both polarities.
1.5SMC36AHE3/9AT 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:
- Discontinued at Digi-Key
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- 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)
1.5SMC36AHE3/9AT FAQ
1.How can I place an order for 1.5SMC36AHE3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC36AHE3/9AT 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 1.5SMC36AHE3/9AT reliable?
The price and inventory of 1.5SMC36AHE3/9AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC36AHE3/9AT is usually 5 days.
3.What payment methods are accepted for 1.5SMC36AHE3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC36AHE3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC36AHE3/9AT?
1.5SMC36AHE3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC36AHE3/9AT 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 1.5SMC36AHE3/9AT?
For technical support, including 1.5SMC36AHE3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC36AHE3/9AT requirements.
6.How does Aetrix verify that 1.5SMC36AHE3/9AT is sourced from the original manufacturer or authorized distributors?
All 1.5SMC36AHE3/9AT 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 1.5SMC36AHE3/9AT meets industry standards.
7.What is the process for return or replacement of 1.5SMC36AHE3/9AT?
All 1.5SMC36AHE3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC36AHE3/9AT, 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 1.5SMC36AHE3/9AT part is unused and in its original packaging.
Return procedure for 1.5SMC36AHE3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC36AHE3/9AT Tags
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Diodes Incorporated
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Diodes Incorporated
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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