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Vishay General Semiconductor - Diodes Division 1.5SMC440AHE3_A/H
- Part No.:
- 1.5SMC440AHE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC440AHE3_A/H.pdf
- Description:
- TVS DIODE 376VWM 602VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:6,502
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Product details
Overview
1.5SMC440AHE3_A/H from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the SMC (DO-214AB) package, rated for 440 V standoff voltage (VWM), 462 V maximum breakdown voltage (VBR), and 1500 W peak pulse power (10/1000 μs). It provides robust overvoltage protection for high-voltage DC bus lines in industrial motor drives and telecom power supplies.
For engineers reviewing the 1.5SMC440AHE3_A/H datasheet, 1.5SMC440AHE3_A/H pinout, 1.5SMC440AHE3_A/H application, or 1.5SMC440AHE3_A/H equivalent, key selection criteria include clamping voltage (602 V at 2.5 A IPPM), low leakage (<1 μA at 376 V), AEC-Q101 qualification, RoHS compliance, and thermal resistance (RθJA = 75 °C/W).
Technical Context
This TVS diode operates as a unidirectional clamping device with cathode-band polarity marking, leveraging glass-passivated junction technology for stable surge response and low incremental surge resistance. Its 10/1000 μs waveform rating supports repetitive transient suppression up to 0.01% duty cycle.
Designed for high-reliability environments, it meets MSL Level 1 per J-STD-020 (peak reflow 260 °C), features matte tin-plated leads compliant with J-STD-002 and JESD 22-B102, and delivers 150 °C maximum junction temperature operation with 6.5 W steady-state power dissipation on infinite heatsink.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 376 V - Maximum continuous reverse operating voltage before clamping initiates |
| VBR (Breakdown) | 418–462 V at 1 mA - Confirmed avalanche onset range under standardized test current |
| VC (Clamping) | 602 V at 2.5 A IPPM - Peak voltage seen by protected circuit during 10/1000 μs surge |
| PPPM | 1500 W - Surge energy handling capacity with standard 10/1000 μs waveform |
| ID (Leakage) | <1 μA at 376 V - Minimal reverse leakage ensures negligible standby power loss |
| RθJA | 75 °C/W - Thermal resistance from junction to ambient, critical for layout pad sizing |
| TJ max. | 150 °C - Absolute maximum junction temperature defining safe operating envelope |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, low-profile case with matte tin-plated leads; cathode identified by band marking on unidirectional devices.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during forward conduction | Connected to ground or low-side reference in unidirectional clamp configuration |
| Cathode | Current exit point during forward conduction; marked with band | Connected to protected line (e.g., DC bus); clamps transients toward ground when voltage exceeds VBR |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power (10/1000 μs) | Enables single-device protection against lightning-induced surges per IEC 61000-4-5 Level 4 (4 kV) |
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing |
| Glass passivated chip junction | Ensures stable VBR tolerance and long-term parameter stability under thermal stress |
| MSL Level 1 (260 °C peak) | Supports standard lead-free reflow without popcorn or delamination risk |
| UL 497B recognized (QVGQ2) | Meets safety standards for telecom and industrial signal/power line protectors |
Applications
| Industrial Motor Drives | Telecom DC Power Feeds |
|---|---|
Use Scenario: Protection of 400 V DC bus against switching transients from IGBT turn-off and regenerative braking. IC Role / Device Role / Timing Role: Unidirectional TVS clamping device placed between DC+ and chassis ground. Use Value: Limits transient overshoot to ≤602 V, preventing gate oxide damage to downstream MOSFETs and controllers. |
Use Scenario: Surge suppression on -48 V telecom power distribution lines exposed to induced lightning currents. IC Role / Device Role / Timing Role: High-voltage unidirectional suppressor connected anode-to-ground, cathode-to-line. Use Value: Absorbs 1500 W pulses without degradation, maintaining <1 μA leakage to avoid battery drain in standby. |
| High-Voltage Solar Inverters | EV Charging Station DC Links |
Use Scenario: Overvoltage protection on PV string inputs where open-circuit voltage reaches 600–1000 VDC. IC Role / Device Role / Timing Role: Standoff-rated TVS used in parallel with MOVs for fast-response secondary clamping. Use Value: Clamps within nanoseconds to 602 V, complementing slower MOVs and reducing stress on DC-link capacitors. |
Use Scenario: DC bus protection in 800 V EV fast-charging modules subjected to load dump and grid-switching spikes. IC Role / Device Role / Timing Role: Primary unidirectional suppressor on positive rail, cathode tied to 800 V bus. Use Value: Withstands 2.5 A peak pulse current and maintains 376 V standoff, enabling reliable operation across full automotive temperature range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ440AHE3_A/H | Same VWM/VBR/VC specs but SMB (DO-214AA) package; lower PPPM (600 W), higher RθJA (100 °C/W) | Limited to lower-energy transients; unsuitable for IEC 61000-4-5 Level 4 | Select only if board space constraints prohibit SMC footprint and surge energy is ≤600 W |
| 1.5KE440A | Through-hole DO-201 package; identical electrical specs but no AEC-Q101 qualification or MSL Level 1 rating | Not suitable for automated SMT assembly or automotive under-hood use | Choose for legacy through-hole designs or non-automotive industrial applications where reflow compatibility is irrelevant |
Compared with SMBJ440AHE3_A/H and 1.5KE440A, the 1.5SMC440AHE3_A/H uniquely combines 1500 W surge capability, AEC-Q101 qualification, and SMC's optimized thermal performance-making it the only option for high-reliability, high-energy SMT TVS deployment in automotive and industrial power systems.
Availability
1.5SMC440AHE3_A/H is available at Aetrix Electronics and suitable for industrial motor drives, telecom DC power feeds, high-voltage solar inverters, and EV charging station DC links requiring stable component supply and long-term lifecycle support.
Supply support for 1.5SMC440AHE3_A/H 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, precision, and application-specific validation.
The 1.5SMC Series was engineered for high-power, surface-mount transient suppression in harsh environments-targeting automotive, industrial, and telecom systems where compact size, AEC-Q101 compliance, and repeatable clamping performance are mandatory.
FAQ
What is the clamping voltage of the 1.5SMC440AHE3_A/H under a 10/1000 μs surge?
The 1.5SMC440AHE3_A/H has a maximum clamping voltage (VC) of 602 V at 2.5 A peak pulse current (IPPM), measured using the standard 10/1000 μs waveform. This value defines the upper voltage limit imposed on the protected circuit during transient events and is verified per Figure 1 and Table on page 2 of Vishay document 88303.
Is the 1.5SMC440AHE3_A/H qualified for automotive applications?
Yes, the 1.5SMC440AHE3_A/H is AEC-Q101 qualified, as indicated by the "HE3" suffix and confirmed in the ordering information table (page 3) and features list (page 1) of Vishay document 88303. It undergoes stress testing for temperature cycling, high-temperature reverse bias, and mechanical shock per automotive reliability requirements.
What does the "_A/H" suffix mean in 1.5SMC440AHE3_A/H?
The "_A/H" suffix in 1.5SMC440AHE3_A/H denotes AEC-Q101 qualification (A) and packaging in 7-inch plastic tape and reel (H), with a base quantity of 850 units. This matches the ordering convention defined in the "ORDERING INFORMATION" section (page 3) of Vishay document 88303 for the 1.5SMC250A–540A range.
Can the 1.5SMC440AHE3_A/H be used in bidirectional configurations?
No, the 1.5SMC440AHE3_A/H is a unidirectional TVS diode, as confirmed by its part number ending in "A" (not "CA") and the polarity marking description ("band denotes cathode end") on page 1 of Vishay document 88303. Bidirectional variants use the "CA" suffix (e.g., 1.5SMC440CA) and lack polarity markings.
What is the maximum junction temperature rating for the 1.5SMC440AHE3_A/H?
The 1.5SMC440AHE3_A/H has a maximum junction temperature (TJ max.) of +150 °C, specified in the "MAXIMUM RATINGS" table (page 1) and confirmed in the "THERMAL CHARACTERISTICS" section (page 3) of Vishay document 88303. This rating applies across the full storage and operating range of −65 °C to +150 °C.
1.5SMC440AHE3_A/H 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:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 376V
- Voltage - Breakdown (Min):
- 418V
- Voltage - Clamping (Max) @ Ipp:
- 602V
- Current - Peak Pulse (10/1000µs):
- 2.5A
- 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)
1.5SMC440AHE3_A/H FAQ
1.How can I place an order for 1.5SMC440AHE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC440AHE3_A/H 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 1.5SMC440AHE3_A/H reliable?
The price and inventory of 1.5SMC440AHE3_A/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC440AHE3_A/H is usually 5 days.
3.What payment methods are accepted for 1.5SMC440AHE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC440AHE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC440AHE3_A/H?
1.5SMC440AHE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC440AHE3_A/H 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 1.5SMC440AHE3_A/H?
For technical support, including 1.5SMC440AHE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC440AHE3_A/H requirements.
6.How does Aetrix verify that 1.5SMC440AHE3_A/H is sourced from the original manufacturer or authorized distributors?
All 1.5SMC440AHE3_A/H 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 1.5SMC440AHE3_A/H meets industry standards.
7.What is the process for return or replacement of 1.5SMC440AHE3_A/H?
All 1.5SMC440AHE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC440AHE3_A/H, 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 1.5SMC440AHE3_A/H part is unused and in its original packaging.
Return procedure for 1.5SMC440AHE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC440AHE3_A/H Tags
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