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Vishay General Semiconductor - Diodes Division 1.5SMC16AHE3/9AT
- Part No.:
- 1.5SMC16AHE3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC16AHE3/9AT.pdf
- Description:
- TVS DIODE 13.6VWM 22.5VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:9,019
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Product details
Overview
1.5SMC16AHE3/9AT from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMC (DO-214AB) package, designed for high-energy surge protection. It features 1500 W peak pulse power (10/1000 μs), 13.6 V stand-off voltage (VWM), 22.5 V maximum clamping voltage (VC) at 66.7 A peak pulse current, and AEC-Q101 qualification for automotive applications.
For engineers reviewing the 1.5SMC16AHE3/9AT datasheet, 1.5SMC16AHE3/9AT pinout, 1.5SMC16AHE3/9AT application, or 1.5SMC16AHE3/9AT equivalent, this device serves as a robust, RoHS-compliant, low-profile TVS for protecting sensitive ICs, MOSFETs, and sensor signal lines against lightning-induced transients and inductive switching surges in automotive and industrial systems.
Technical Context
The 1.5SMC16AHE3/9AT operates as a unidirectional avalanche diode with glass-passivated junction, enabling fast response time (<1 ns) and low incremental surge resistance. Its breakdown voltage is specified at 15.2–16.8 V (IT = 1.0 mA), and it maintains stable clamping performance across -65 °C to +150 °C operating junction temperature range.
Thermal design is supported by RθJA = 75 °C/W (typ.) and RθJL = 15 °C/W (typ.), with derating applied above 25 °C ambient per Fig. 2. The device meets MSL Level 1 (J-STD-020) and is rated for 200 A non-repetitive forward surge current (8.3 ms half-sine).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power (10/1000 μs) | 1500 W - sustains high-energy transients without failure in automotive and industrial surge environments |
| Stand-off Voltage VWM | 13.6 V - maximum continuous reverse voltage before conduction begins; compatible with 12 V system rails |
| Clamping Voltage VC @ IPPM | 22.5 V - limits transient voltage seen by downstream circuitry during 66.7 A surge event |
| Breakdown Voltage VBR | 15.2–16.8 V @ 1.0 mA - defines precise avalanche onset threshold for predictable protection behavior |
| Operating Temperature Range | -65 °C to +150 °C - supports under-hood automotive and wide-temperature industrial deployment |
| AEC-Q101 Qualified | Yes - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD stress |
| Package | SMC (DO-214AB) - surface-mount footprint with 8.0 mm × 8.0 mm copper pad thermal management |
Pinout & Package
Package: SMC (DO-214AB), molded plastic case with matte tin-plated leads; polarity indicated by cathode band on unidirectional devices.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Reverse voltage reference | Connected to protected line ground or low-side return path; defines conduction direction in unidirectional mode |
| Cathode | Avalanche conduction terminal / Surge sink node | Connected to protected signal/power line; clamps overvoltage by shunting surge current to ground when VAK > VBR |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power rating | Enables single-device protection against IEC 61000-4-5 Level 4 (4 kV/2 Ω) surges without cascaded staging |
| Glass passivated chip junction | Ensures long-term stability of VBR and leakage under thermal cycling and humidity exposure |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and reflow compatibility up to 260 °C peak without baking |
| AEC-Q101 qualification (HE3 suffix) | Validates reliability for automotive powertrain, body control, and ADAS modules requiring zero-defect operation |
| Low profile SMC package | Reduces board space vs. DO-15/DO-201 while maintaining thermal performance via optimized pad layout |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC Digital Input Protection |
|---|---|
Use Scenario: Protecting LIN bus transceiver inputs and microcontroller GPIOs from load dump and alternator ripple in vehicle door modules. IC Role / Device Role / Timing Role: Unidirectional TVS clamping transient energy before it reaches 3.3 V/5 V logic-level interface ICs. Use Value: Prevents latch-up or gate oxide damage in MCU peripherals during 12 V system surges up to 100 V/100 ms. |
Use Scenario: Safeguarding 24 V DC digital input channels in programmable logic controllers exposed to relay coil flyback and field wiring faults. IC Role / Device Role / Timing Role: Fast-acting voltage clamp placed between field input and optocoupler input stage. Use Value: Limits transient voltage to ≤22.5 V, ensuring optocoupler LED remains within safe forward voltage margin and avoids false triggering. |
| Automotive Sensor Signal Line (e.g., ABS Wheel Speed) | Consumer Appliance Motor Driver Interface |
Use Scenario: Shielding differential Hall-effect sensor outputs from EMI and electrostatic discharge in anti-lock braking systems. IC Role / Device Role / Timing Role: Bidirectional-capable unidirectional TVS (used in back-to-back configuration) guarding analog signal pairs. Use Value: Maintains signal integrity below 13.6 V nominal rail while clamping ±22.5 V transients within <1 ns response window. |
Use Scenario: Protecting gate driver inputs and microcontroller PWM outputs in washing machine motor inverters subjected to brush commutation noise. IC Role / Device Role / Timing Role: Standoff-rated TVS placed directly at MCU output pins driving external level-shifters or opto-isolators. Use Value: Absorbs 66.7 A surge energy without degradation, preserving timing accuracy of 20 kHz PWM signals during motor stall events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ16A-E3/52T | Lower peak power (600 W), same VWM/VC, SMB package (smaller thermal mass) | Not qualified to AEC-Q101; limited to commercial-grade consumer/industrial use | Select when cost and board space are prioritized over automotive reliability and 1500 W surge handling |
| 1.5KE16A | Through-hole DO-201 package, identical electrical specs but no AEC-Q101 or MSL-1 rating | Requires wave soldering; unsuitable for automated SMT lines or high-reliability automotive PCB assembly | Choose only for legacy through-hole designs where rework flexibility outweighs production efficiency and qualification requirements |
Compared with SMBJ16A-E3/52T and 1.5KE16A, the 1.5SMC16AHE3/9AT uniquely combines AEC-Q101 qualification, 1500 W surge capability, and SMC surface-mount compatibility-making it the only option among the three suitable for new automotive SMT designs requiring zero-defect field reliability and high-energy transient immunity.
Availability
1.5SMC16AHE3/9AT is available at Aetrix Electronics and suitable for automotive electronics, industrial PLCs, and consumer appliance motor control systems requiring stable component supply, long lifecycle support, and AEC-Q101 compliance.
Supply support for 1.5SMC16AHE3/9AT 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, thermal performance, and automotive qualification.
The 1.5SMC Series was developed specifically for high-power, surface-mount transient suppression in harsh environments-targeting automotive, industrial, and telecom applications where compact size, high surge rating, and AEC-Q101 validation are mandatory.
FAQ
What is the clamping voltage of the 1.5SMC16AHE3/9AT under full-rated surge current?
The 1.5SMC16AHE3/9AT has a maximum clamping voltage (VC) of 22.5 V at 66.7 A peak pulse current (IPPM) with a 10/1000 μs waveform. This value is guaranteed per the Vishay datasheet (Document Number: 88303, Rev. 09-Mar-2026) and reflects the upper limit of voltage imposed on protected circuitry during worst-case surge events. Engineers must verify that downstream components tolerate this clamped voltage under all operating conditions.
Is the 1.5SMC16AHE3/9AT suitable for bidirectional transient protection?
No-the 1.5SMC16AHE3/9AT is a unidirectional TVS diode, as indicated by the "A" suffix and absence of "CA" in the part number. It conducts only in reverse bias (cathode positive) and must be oriented accordingly in-circuit. For bidirectional protection, Vishay offers the 1.5SMC16CAHE3/9AT variant, which provides symmetrical clamping in both polarities and uses the same SMC package.
What does the "HE3" suffix signify in 1.5SMC16AHE3/9AT?
The "HE3" suffix in 1.5SMC16AHE3/9AT denotes RoHS-compliant construction with AEC-Q101 qualification. Specifically, "H" indicates AEC-Q101 qualification, "E3" confirms RoHS compliance (lead-free, bromine-free), and the combination ensures suitability for automotive applications requiring zero-defect reliability and regulatory conformance. This distinguishes it from commercial-grade "E3" or halogen-free "HM3" variants.
What is the thermal resistance of the 1.5SMC16AHE3/9AT, and how does it affect layout?
The 1.5SMC16AHE3/9AT has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W and junction-to-leads (RθJL) of 15 °C/W, measured on 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal. To maintain safe junction temperatures under sustained power dissipation, PCB layout must replicate this minimum pad area and ensure adequate copper pour connectivity-especially critical in automotive under-hood applications where ambient temperatures exceed 85 °C.
Does the 1.5SMC16AHE3/9AT require derating at elevated ambient temperatures?
Yes-the 1.5SMC16AHE3/9AT requires linear derating of peak pulse power above 25 °C ambient, per Figure 2 in the Vishay datasheet. At 100 °C ambient, its 1500 W rating drops to approximately 750 W. Designers must apply this derating when sizing protection for high-temperature environments such as engine compartments or enclosed industrial enclosures, and validate clamping performance using worst-case thermal models.
1.5SMC16AHE3/9AT 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):
- 13.6V
- Voltage - Breakdown (Min):
- 15.2V
- Voltage - Clamping (Max) @ Ipp:
- 22.5V
- Current - Peak Pulse (10/1000µs):
- 66.7A
- 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)
1.5SMC16AHE3/9AT FAQ
1.How can I place an order for 1.5SMC16AHE3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC16AHE3/9AT 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 1.5SMC16AHE3/9AT reliable?
The price and inventory of 1.5SMC16AHE3/9AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC16AHE3/9AT is usually 5 days.
3.What payment methods are accepted for 1.5SMC16AHE3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC16AHE3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC16AHE3/9AT?
1.5SMC16AHE3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC16AHE3/9AT 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 1.5SMC16AHE3/9AT?
For technical support, including 1.5SMC16AHE3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC16AHE3/9AT requirements.
6.How does Aetrix verify that 1.5SMC16AHE3/9AT is sourced from the original manufacturer or authorized distributors?
All 1.5SMC16AHE3/9AT 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 1.5SMC16AHE3/9AT meets industry standards.
7.What is the process for return or replacement of 1.5SMC16AHE3/9AT?
All 1.5SMC16AHE3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC16AHE3/9AT, 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 1.5SMC16AHE3/9AT part is unused and in its original packaging.
Return procedure for 1.5SMC16AHE3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC16AHE3/9AT Tags
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