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Vishay General Semiconductor - Diodes Division 1.5SMC440AHM3_A/I
- Part No.:
- 1.5SMC440AHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC440AHM3_A/I.pdf
- Description:
- TVS DIODE 376VWM 602VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:8,852
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Product details
Overview
1.5SMC440AHM3_A/I 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 1.5SMC440AHM3_A/I datasheet, 1.5SMC440AHM3_A/I pinout, 1.5SMC440AHM3_A/I application, or 1.5SMC440AHM3_A/I equivalent, key selection criteria include clamping voltage (602 V at IPPM), low leakage (<1.0 μA at 376 V), AEC-Q101 qualification status, halogen-free 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. Its silicon junction is glass passivated for stable surge performance and long-term reliability under repetitive transients. The device responds in sub-nanosecond time to suppress ESD and lightning-induced surges.
Designed for mounting on 8.0 mm × 8.0 mm copper pads per terminal, it delivers 1500 W peak pulse power with 2.5 A peak pulse current (IPPM) at its 602 V clamping voltage (VC), while maintaining a maximum reverse leakage of 1.0 μA at 376 V (VWM = 440 V). Junction temperature is rated from –65 °C to +150 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 440 V - Maximum continuous reverse operating voltage before clamping initiates |
| VBR (Breakdown) | 418–462 V at 1 mA - Confirmed avalanche onset range ensuring predictable turn-on behavior |
| VC (Clamping) | 602 V at 2.5 A IPPM - Peak voltage seen by protected circuit during full-rated 10/1000 μs transient |
| PPPM | 1500 W - Surge energy handling capacity under standardized 10/1000 μs waveform |
| ID (Leakage) | <1.0 μA at 376 V - Minimal power loss and signal interference in high-impedance bias networks |
| Package | SMC (DO-214AB) - Industry-standard surface-mount outline with 7.75 mm × 6.22 mm footprint and 2.62 mm height |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing |
| RoHS & Halogen-Free | Compliant (HM3 suffix) - Meets JEDEC J-STD-020 MSL Level 1 and JESD201 Class 2 whisker resistance |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, molded plastic case with matte tin-plated leads. Cathode identified by black band; anode is unmarked end. Mounting requires 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pad per terminal for rated power dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink | Connected to protected line; conducts surge current to ground when V > VBR |
| Anode (unmarked end) | Reference node | Typically tied to system ground or low-impedance return path for clamping action |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power | Enables protection against IEC 61000-4-5 Level 4 (4 kV surge) on 400 V DC lines without derating |
| Glass passivated junction | Ensures stable VBR and low leakage over 10+ years in humid or thermally cycled environments |
| MSL Level 1 rating | Allows direct placement on PCB without baking; compatible with standard reflow profiles up to 260 °C peak |
| Halogen-free & RoHS-compliant (HM3) | Meets EU Directive 2011/65/EU and IPC-1752A material declaration requirements for green manufacturing |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (e.g., MOSFET switching noise) |
Applications
| Industrial Motor Drives | Telecom Power Supplies |
|---|---|
Use Scenario: Protection of 400 V DC link capacitors and IGBT gate drivers against inductive kickback and lightning surges. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed across DC bus or between gate and source. Use Value: Limits transient voltage to ≤602 V, preventing IGBT avalanche failure and capacitor dielectric stress. |
Use Scenario: Input-stage surge suppression on -48 V or +54 V telecom rectifier outputs feeding base station RF modules. IC Role / Device Role / Timing Role: Primary overvoltage clamp on secondary-side DC distribution rail. Use Value: Withstands repeated 10/1000 μs surges up to 1500 W without parameter shift, ensuring field-reliability beyond 10 years. |
| Renewable Energy Inverters | Railway Signaling Systems |
Use Scenario: DC-link protection in solar string inverters exposed to grid-switching transients and nearby lightning strikes. IC Role / Device Role / Timing Role: Standoff-rated TVS mounted directly at PV input terminals and MPPT controller inputs. Use Value: 440 V VWM matches typical 600 V-class inverter DC ratings; 602 V VC avoids false triggering during normal operation. |
Use Scenario: Overvoltage hardening of 110 V DC signaling circuits in trackside control cabinets subject to traction return current spikes. IC Role / Device Role / Timing Role: Unidirectional suppressor installed between signal line and chassis ground. Use Value: AEC-Q101 qualification ensures survivability under EN 50121-3-2 rail EMC stress profiles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ440A-E3/52 | Lower PPPM (600 W), SMB package (smaller footprint), higher RθJA (100 °C/W) | Not suitable for 1500 W surge events; limited to lower-energy transients in space-constrained designs | Select only if board area is critical and surge threat level is ≤IEC 61000-4-5 Level 2 |
| 1.5KE440A | Through-hole DO-201 package, same VWM/VBR/VC specs, but no AEC-Q101 or halogen-free certification | Lacks automotive qualification and modern environmental compliance; not acceptable for OEM automotive programs | Use only in legacy industrial equipment where through-hole assembly remains standard |
Compared with SMBJ440A-E3/52 and 1.5KE440A, the 1.5SMC440AHM3_A/I uniquely combines 1500 W surge capability, SMC surface-mount compatibility, AEC-Q101 qualification, and halogen-free construction-making it the only option meeting Tier 1 automotive and high-reliability industrial design requirements simultaneously.
Availability
1.5SMC440AHM3_A/I is available at Aetrix Electronics and suitable for industrial motor drives, telecom power supplies, renewable energy inverters, and railway signaling systems requiring stable component supply, long-lifecycle support, and certified environmental compliance.
Supply support for 1.5SMC440AHM3_A/I 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, TVS devices, and optoelectronics with emphasis on reliability, power efficiency, and application-specific performance.
The 1.5SMC Series was engineered for high-energy transient suppression in harsh environments-targeting automotive, industrial, and telecom applications where sustained surge immunity and long-term parametric stability are mandatory.
FAQ
What is the clamping voltage of the 1.5SMC440AHM3_A/I under full-rated surge conditions?
The 1.5SMC440AHM3_A/I clamps to a maximum of 602 V when subjected to its rated 2.5 A peak pulse current (IPPM) using the standard 10/1000 μs waveform. This value is measured at TA = 25 °C with recommended 8.0 mm × 8.0 mm copper pads per terminal, and defines the upper voltage limit imposed on protected circuitry during worst-case transients.
Is the 1.5SMC440AHM3_A/I suitable for automotive applications?
Yes-the 1.5SMC440AHM3_A/I carries AEC-Q101 qualification (denoted by the "HM3" and "_B" suffix per Vishay documentation), confirming validation across temperature cycling, highly accelerated life testing, and ESD robustness required for automotive powertrain and body electronics. Its halogen-free, RoHS-compliant construction further supports OEM compliance mandates.
How does the 1.5SMC440AHM3_A/I differ from the 1.5SMC440A-E3/57T?
The 1.5SMC440AHM3_A/I uses halogen-free molding compound and meets JESD201 Class 2 whisker resistance, whereas the 1.5SMC440A-E3/57T is RoHS-compliant but not halogen-free. Both share identical electrical specs and SMC packaging, but HM3 is required for green manufacturing programs and certain automotive Tier 1 specifications.
What is the maximum reverse leakage current for the 1.5SMC440AHM3_A/I at its rated standoff voltage?
At its 440 V standoff voltage (VWM), the 1.5SMC440AHM3_A/I exhibits ≤1.0 μA reverse leakage current at TA = 25 °C. This ultra-low leakage preserves signal integrity in high-impedance sensing paths and minimizes standby power loss in always-on protection circuits.
Can the 1.5SMC440AHM3_A/I be used in bidirectional configurations?
No-the 1.5SMC440AHM3_A/I is a unidirectional TVS diode, indicated by the "A" suffix and cathode band marking. For bidirectional protection at comparable voltage ratings, Vishay offers the 1.5SMC440CA series (e.g., 1.5SMC440CAHM3_A/I), which features symmetrical clamping in both polarities and no polarity marking.
1.5SMC440AHM3_A/I 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):
- 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:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
1.5SMC440AHM3_A/I FAQ
1.How can I place an order for 1.5SMC440AHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC440AHM3_A/I 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 1.5SMC440AHM3_A/I reliable?
The price and inventory of 1.5SMC440AHM3_A/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC440AHM3_A/I is usually 5 days.
3.What payment methods are accepted for 1.5SMC440AHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC440AHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC440AHM3_A/I?
1.5SMC440AHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC440AHM3_A/I 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 1.5SMC440AHM3_A/I?
For technical support, including 1.5SMC440AHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC440AHM3_A/I requirements.
6.How does Aetrix verify that 1.5SMC440AHM3_A/I is sourced from the original manufacturer or authorized distributors?
All 1.5SMC440AHM3_A/I 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 1.5SMC440AHM3_A/I meets industry standards.
7.What is the process for return or replacement of 1.5SMC440AHM3_A/I?
All 1.5SMC440AHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC440AHM3_A/I, 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 1.5SMC440AHM3_A/I part is unused and in its original packaging.
Return procedure for 1.5SMC440AHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC440AHM3_A/I Tags
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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