My Inquiry
My Account
Vishay General Semiconductor - Diodes Division 1.5SMC400AHE3_A/I
- Part No.:
- 1.5SMC400AHE3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC400AHE3_A/I.pdf
- Description:
- TVS DIODE 342VWM 548VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:6,191
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
1.5SMC400AHE3_A/I from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the SMC (DO-214AB) package, rated for 400 V standoff voltage (VWM), 420 V maximum breakdown voltage (VBR), and 1500 W peak pulse power (10/1000 μs). It delivers 2.7 A peak pulse current (IPPM) with 548 V clamping voltage (VC) at rated surge, and is AEC-Q101 qualified for automotive electronics protection.
For engineers reviewing the 1.5SMC400AHE3_A/I datasheet, 1.5SMC400AHE3_A/I pinout, 1.5SMC400AHE3_A/I application, or 1.5SMC400AHE3_A/I equivalent, this device is selected for high-voltage transient suppression in DC power rails, battery input stages, and industrial sensor interfaces where robust ESD and lightning surge immunity are required under AEC-Q101-compliant conditions.
Technical Context
This TVS operates as a unidirectional clamping device with cathode-banded polarity, leveraging a glass-passivated silicon junction to achieve fast response (<1 ns) and low incremental surge resistance. Its thermal design supports 150 °C maximum junction temperature and 75 °C/W junction-to-ambient thermal resistance on standard 8 mm × 8 mm copper pads.
The 1.5SMC400AHE3_A/I is optimized for single-pulse transients per IEC 61000-4-5 (10/1000 μs waveform) and meets MSL Level 1 per J-STD-020 with 260 °C reflow peak. It is RoHS-compliant and halogen-free, with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 342 V - Maximum continuous reverse operating voltage before clamping begins; defines safe DC rail margin for 400 V nominal systems. |
| VBR (Breakdown Voltage) | 380–420 V at 1 mA - Confirmed avalanche initiation range; ensures predictable turn-on during overvoltage events. |
| VC (Clamping Voltage) | 548 V at IPPM - Maximum voltage seen by protected circuit during 1500 W surge; critical for downstream IC survival. |
| PPPM (Peak Pulse Power) | 1500 W (10/1000 μs) - Sustains standardized lightning-surge energy without failure; validated per IEC 61000-4-5. |
| IPPM (Peak Pulse Current) | 2.7 A - Surge current capability at rated clamping; determines minimum trace width and PCB layout robustness. |
| TJ max. | 150 °C - Maximum junction temperature; enables operation in under-hood automotive environments and industrial enclosures. |
| Package | SMC (DO-214AB) - Surface-mount outline with 7.75 mm × 6.22 mm footprint; compatible with automated pick-and-place and reflow. |
Pinout & Package
Package: SMC (DO-214AB), molded case with matte tin-plated leads; cathode indicated by band marking on unidirectional devices.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal during forward conduction | Connected to system ground or low-side return path; defines reference for clamping action. |
| Cathode | Current exit terminal during reverse avalanche | Banded end; connected to protected line (e.g., 400 V DC bus); carries full surge current during clamping. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and surge endurance-enables use in ADAS power supplies and EV battery management inputs. |
| 1500 W peak pulse rating | Withstands IEC 61000-4-5 Level 4 surges (4 kV line-earth) on properly designed PCBs-eliminates need for cascaded protection in high-voltage DC systems. |
| Glass passivated junction | Ensures stable leakage (<1 μA at VWM) and long-term parameter stability across 150 °C operation-critical for mission-critical industrial sensors. |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and standard reflow without baking-reduces manufacturing overhead in high-volume automotive assembly lines. |
| Halogen-free & RoHS-compliant | Fulfills EU ELV and China RoHS requirements for automotive and industrial equipment-supports global market access and sustainability compliance. |
Applications
| Automotive Battery Input Protection | Industrial DC Power Rail Clamping |
|---|---|
Use Scenario: Protecting 400 V battery monitoring circuits in EV power distribution units against load dump and jump-start transients. IC Role / Device Role / Timing Role: Unidirectional TVS clamping element placed between battery positive and chassis ground, activated within <1 ns of overvoltage onset. Use Value: Limits transient voltage to ≤548 V, preventing damage to isolated ADCs and CAN transceivers powered from the same rail. |
Use Scenario: Safeguarding programmable logic controller (PLC) 380–400 V DC input modules from switching surges in factory automation. IC Role / Device Role / Timing Role: Primary overvoltage clamp on main DC input, coordinated with upstream fuses and downstream DC-DC converters. Use Value: Absorbs 1500 W surge energy without degradation, maintaining system uptime and eliminating field failures due to relay coil kickback. |
| Telecom Rectifier Output Protection | Renewable Energy Inverter DC Link |
Use Scenario: Shielding telecom base station rectifier outputs (nominal 380–400 V DC) from lightning-induced surges entering via outdoor cabling. IC Role / Device Role / Timing Role: Final-stage TVS on rectified output bus, positioned after bulk capacitance and before DC distribution. Use Value: Clamps induced transients to 548 V, preserving isolation integrity of downstream 48 V DC-DC converters and digital control boards. |
Use Scenario: Protecting solar inverter DC link capacitors and IGBT gate drivers from grid-switching transients and PV array arcing events. IC Role / Device Role / Timing Role: High-voltage clamping device across DC+ and DC− terminals, sized for 1500 W single-event energy absorption. Use Value: Prevents destructive overvoltage on 400 V-rated film capacitors and avoids false triggering of IGBT short-circuit protection. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ400A-E3/57T | Same 400 V VWM, but lower PPPM (400 W) and smaller SMA package (DO-214AC); 3× lower surge current rating (0.9 A). | Restricted to low-energy signal-line or auxiliary supply protection-not suitable for main DC bus clamping. | Select only when board space is constrained and surge energy is limited to <400 W. |
| 1.5KE400A | Through-hole TO-204AA (DO-41) package; identical VWM/VBR/VC specs but higher RθJA (100 °C/W) and no AEC-Q101 qualification. | Lacks automotive qualification and surface-mount compatibility; requires manual insertion and wave soldering. | Use only in legacy through-hole designs where rework to SMD is not feasible and automotive compliance is unnecessary. |
Compared with SMAJ400A-E3/57T and 1.5KE400A, the 1.5SMC400AHE3_A/I uniquely combines AEC-Q101 qualification, 1500 W surge handling, and SMC surface-mount compatibility-making it the sole choice for new automotive and industrial 400 V DC system designs requiring production-ready, high-reliability TVS protection.
Availability
1.5SMC400AHE3_A/I is available at Aetrix Electronics and suitable for automotive battery management, industrial PLC power inputs, telecom rectifier outputs, and renewable energy inverter DC links requiring stable component supply with full AEC-Q101 traceability and RoHS/halogen-free compliance.
Supply support for 1.5SMC400AHE3_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 high-reliability diodes, MOSFETs, and passive components for automotive, industrial, and computing markets.
The 1.5SMC Series was engineered specifically for high-power transient suppression in harsh-environment applications-delivering consistent clamping performance across wide temperature ranges and extended service life in automotive and industrial power systems.
FAQ
What is the clamping voltage of the 1.5SMC400AHE3_A/I at its rated peak pulse current?
The 1.5SMC400AHE3_A/I has a maximum clamping voltage (VC) of 548 V when subjected to its rated peak pulse current (IPPM) of 2.7 A under the standard 10/1000 μs waveform. This value is measured at TJ = 25 °C on 8.0 mm × 8.0 mm copper pads and defines the upper voltage limit imposed on protected circuitry during surge events. The 1.5SMC400AHE3_A/I maintains this clamping performance across its full operating temperature range up to 150 °C.
Is the 1.5SMC400AHE3_A/I suitable for automotive applications?
Yes, the 1.5SMC400AHE3_A/I is AEC-Q101 qualified and explicitly designated for automotive use, as confirmed by its "HE3" suffix and documentation in Vishay's 1.5SMC series datasheet (Document Number: 88303). It undergoes stress testing for temperature cycling, high-temperature reverse bias, and surge endurance per AEC-Q101 Rev D. The 1.5SMC400AHE3_A/I is commonly deployed in EV battery monitoring, ADAS power supplies, and body control module inputs.
What does the "_A/I" suffix mean in 1.5SMC400AHE3_A/I?
The "_A/I" suffix in 1.5SMC400AHE3_A/I indicates two ordering attributes: "A" denotes the voltage variant (400 V VWM), and "I" specifies the packaging format-13-inch diameter plastic tape and reel containing 3500 units. This matches Vishay's documented ordering convention where "I" corresponds to large-reel delivery for high-volume SMT production, distinct from the "H" (7-inch reel, 850 units) option.
How does the 1.5SMC400AHE3_A/I differ from bidirectional TVS diodes like 1.5SMC400CA?
The 1.5SMC400AHE3_A/I is unidirectional and features a cathode band for polarity-sensitive placement, enabling asymmetric clamping only in reverse bias-ideal for DC power rails referenced to ground. In contrast, 1.5SMC400CA is bidirectional with no polarity marking and clamps in both directions, suited for AC lines or differential signal protection. Their VWM, VBR, and VC values differ significantly: the 1.5SMC400AHE3_A/I has VWM = 342 V, while 1.5SMC400CA has VWM = 342 V only in each direction, with different breakdown symmetry.
What is the thermal resistance of the 1.5SMC400AHE3_A/I, and how does it affect PCB layout?
The 1.5SMC400AHE3_A/I has 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, as specified in the Vishay datasheet. This value assumes minimal copper area; reducing pad size increases RθJA and risks thermal runaway during repetitive surges. For reliable operation, maintain ≥8 mm × 8 mm copper pour per terminal and avoid narrow traces-especially critical in automotive applications where ambient temperatures exceed 105 °C.
1.5SMC400AHE3_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:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 342V
- Voltage - Breakdown (Min):
- 380V
- Voltage - Clamping (Max) @ Ipp:
- 548V
- Current - Peak Pulse (10/1000µs):
- 2.7A
- 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)
1.5SMC400AHE3_A/I FAQ
1.How can I place an order for 1.5SMC400AHE3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC400AHE3_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 1.5SMC400AHE3_A/I reliable?
The price and inventory of 1.5SMC400AHE3_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 1.5SMC400AHE3_A/I is usually 5 days.
3.What payment methods are accepted for 1.5SMC400AHE3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC400AHE3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC400AHE3_A/I?
1.5SMC400AHE3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC400AHE3_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 1.5SMC400AHE3_A/I?
For technical support, including 1.5SMC400AHE3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC400AHE3_A/I requirements.
6.How does Aetrix verify that 1.5SMC400AHE3_A/I is sourced from the original manufacturer or authorized distributors?
All 1.5SMC400AHE3_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 1.5SMC400AHE3_A/I meets industry standards.
7.What is the process for return or replacement of 1.5SMC400AHE3_A/I?
All 1.5SMC400AHE3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC400AHE3_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 1.5SMC400AHE3_A/I part is unused and in its original packaging.
Return procedure for 1.5SMC400AHE3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC400AHE3_A/I Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
Tech Hub
Comparator circuit design covering voltage thresholds, input limits, open-collector outputs, LM393 wiring, op-amp differences, hysteresis, timing, window detection and practical fault diagnosis.
Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
