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Vishay General Semiconductor - Diodes Division 1.5SMC30AHE3/57T
- Part No.:
- 1.5SMC30AHE3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC30AHE3/57T.pdf
- Description:
- TVS DIODE 25.6VWM 41.4VC SMC
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
1.5SMC30AHE3/57T 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 30 V standoff voltage (VWM), 34.2 V minimum breakdown voltage (VBR), 41.4 V maximum clamping voltage (VC) at 36.2 A peak pulse current, and 1500 W peak pulse power capability with a 10/1000 μs waveform - deployed in automotive ECUs, industrial sensor interfaces, and DC power rails.
For engineers reviewing the 1.5SMC30AHE3/57T datasheet, 1.5SMC30AHE3/57T pinout, 1.5SMC30AHE3/57T application, or 1.5SMC30AHE3/57T equivalent, key selection criteria include clamping performance under 10/1000 μs transients, AEC-Q101 qualification status, thermal resistance (RθJA = 75 °C/W), and compatibility with automated SMT assembly on standard SMC (DO-214AB) footprints.
Technical Context
This TVS diode operates as a unidirectional clamping device, leveraging a glass-passivated silicon junction to achieve fast response (<1 ns) and low incremental surge resistance. Its design targets transient suppression from inductive switching, ESD, and lightning-induced surges in DC-biased circuits where polarity is defined.
Rated for 150 °C maximum junction temperature and compliant with J-STD-020 MSL Level 1 (260 °C peak reflow), it supports high-reliability automotive applications when ordered with HE3 suffix. The cathode band denotes polarity, and terminals are matte tin-plated for solderability per J-STD-002 and JESD 22-B102.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 25.6 V - Maximum continuous reverse operating voltage before significant leakage; defines safe DC bias margin. |
| VBR (Breakdown) | 28.5–31.5 V at 1 mA - Voltage range at which avalanche conduction begins; ensures predictable turn-on during transients. |
| VC (Clamping) | 41.4 V at 36.2 A (10/1000 μs) - Peak voltage seen by protected circuit during worst-case surge; critical for downstream IC survival. |
| PPPM | 1500 W - Peak pulse power handling capacity; enables protection against high-energy transients like ISO 7637-2 Pulse 1/2a/5a. |
| ID (Leakage) | 1.0 μA max at VWM - Ultra-low reverse leakage preserves efficiency in battery-powered or high-impedance sensing nodes. |
| RθJA | 75 °C/W - Junction-to-ambient thermal resistance; informs derating requirements on standard 8 mm × 8 mm copper pads. |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per AEC specification. |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, low-profile case with matte tin-plated leads. Cathode identified by a visible band on the body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; connected to lower-potential side of protected line. | Defines polarity-sensitive placement - incorrect orientation disables clamping function in unidirectional mode. |
| Cathode | Current exit terminal in forward bias; marked by band; connected to higher-potential side (e.g., VCC rail). | Enables clamping to rail during positive transients; must match PCB silkscreen and schematic symbol polarity. |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power (10/1000 μs) | Supports IEC 61000-4-5 Level 4 (4 kV) surge immunity without external series impedance in many DC input designs. |
| AEC-Q101 qualified (HE3 suffix) | Validated for automotive under-hood and infotainment systems requiring extended temperature operation and lifetime reliability. |
| Low incremental surge resistance | Minimizes clamping voltage overshoot during fast-rising transients (e.g., ESD > 30 kV/μs), improving protection margin. |
| MSL Level 1 (260 °C peak) | Compatible with standard lead-free reflow profiles without pre-baking; reduces manufacturing complexity and cost. |
| Glass passivated junction | Enhances long-term stability and moisture resistance versus epoxy-passivated alternatives, critical for harsh environments. |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC Digital Input Card |
|---|---|
Use Scenario: Protects 12 V supply rail and LIN bus interface from load dump and inductive kickback during relay/actuator switching. IC Role / Device Role / Timing Role: Unidirectional TVS clamping device placed between VBAT and ground, triggered within <1 ns of overvoltage event. Use Value: Limits transient voltage to ≤41.4 V, ensuring survival of 36 V-rated CAN/LIN transceivers and microcontrollers. |
Use Scenario: Shields 24 V digital input channel from field-wiring induced surges (e.g., valve coil de-energization). IC Role / Device Role / Timing Role: Primary front-end surge suppressor on dry-contact input, mounted directly at connector entry point. Use Value: Absorbs 1500 W pulses without degradation, maintaining input logic threshold integrity and eliminating false triggering. |
| Telecom Power Supply OVP | Consumer Appliance Motor Drive Board |
Use Scenario: Guards secondary-side 48 V DC output of telecom rectifier against lightning-induced surges on distribution lines. IC Role / Device Role / Timing Role: Standoff-clamp TVS on output rail, coordinated with upstream MOV and downstream LDOs. Use Value: Clamps to 41.4 V before downstream 50 V-rated capacitors reach rated stress, extending capacitor lifetime. |
Use Scenario: Safeguards MCU GPIO and gate driver inputs from back-EMF spikes generated by brushed DC motor commutation. IC Role / Device Role / Timing Role: Localized unidirectional clamp on motor control signal traces near connectors and drivers. Use Value: Prevents latch-up in 3.3 V logic by limiting coupled transients to <41.4 V, even with minimal PCB trace inductance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ30A-E3/57T | Lower PPPM (400 W), same VWM/VBR/VC, SMA package (smaller footprint, higher RθJA = 110 °C/W). | Not AEC-Q101 qualified; suitable for cost-sensitive consumer or non-automotive industrial use only. | Select when board space is constrained and surge energy is ≤400 W; verify thermal margin with smaller pad area. |
| 1.5KE30A | Through-hole DO-201 package, identical electrical specs but no AEC-Q101 qualification or MSL Level 1 rating. | Requires wave soldering; unsuitable for fully SMT lines or automotive production environments. | Choose only for legacy through-hole designs or prototyping where reflow compatibility and automotive compliance are not required. |
Compared with SMAJ30A-E3/57T and 1.5KE30A, the 1.5SMC30AHE3/57T delivers higher surge robustness (1500 W vs. 400 W or 1500 W with inferior packaging), AEC-Q101 validation, and MSL Level 1 process compatibility - making it the preferred choice for production automotive and high-reliability industrial SMT assemblies.
Availability
1.5SMC30AHE3/57T is available at Aetrix Electronics and suitable for automotive electronics, industrial programmable logic controllers, and telecom power supply designs requiring stable component supply, AEC-Q101 compliance, and repeatable SMT manufacturability.
Supply support for 1.5SMC30AHE3/57T 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, MOSFETs, optoelectronics, and passive components with emphasis on reliability, power handling, and automotive qualification.
The 1.5SMC Series was engineered specifically for high-energy transient suppression in automotive, industrial, and telecom infrastructure - balancing clamping performance, thermal robustness, and SMT process compatibility in the SMC package.
FAQ
What is the clamping voltage of the 1.5SMC30AHE3/57T under a 10/1000 μs surge?
The 1.5SMC30AHE3/57T has a maximum clamping voltage (VC) of 41.4 V when subjected to its rated peak pulse current of 36.2 A with a 10/1000 μs waveform. This value is measured per Figure 1 in the Vishay datasheet 88303 and defines the upper voltage limit imposed on the protected circuit during standardized surge events. The 1.5SMC30AHE3/57T maintains this clamping performance across its operational temperature range and after repeated surges within its specified duty cycle.
Is the 1.5SMC30AHE3/57T qualified for automotive applications?
Yes, the 1.5SMC30AHE3/57T is AEC-Q101 qualified, as confirmed by its HE3 suffix and documentation in Vishay's 1.5SMC Series datasheet (Rev. 09-Mar-2026, Doc. #88303). This qualification covers stress tests including temperature cycling, high-temperature reverse bias, and ESD, validating its suitability for automotive body electronics, infotainment, and powertrain subsystems. The 1.5SMC30AHE3/57T meets these requirements while retaining full 1500 W surge capability and MSL Level 1 reflow compatibility.
What does the "HE3" suffix mean in 1.5SMC30AHE3/57T?
The "HE3" suffix in 1.5SMC30AHE3/57T indicates RoHS-compliant construction with AEC-Q101 qualification and matte tin-plated leads meeting JESD 201 Class 2 whisker resistance. It distinguishes this variant from commercial-grade E3 or M3 versions and confirms compliance with automotive reliability standards. The "57T" denotes packaging in 7-inch plastic tape-and-reel format with 850 units per reel - a configuration verified in Vishay's ordering information table for the 1.5SMC Series.
How does the 1.5SMC30AHE3/57T compare to bidirectional TVS diodes?
The 1.5SMC30AHE3/57T is unidirectional and intended for DC-biased lines where polarity is fixed - such as VCC rails or single-ended signal paths. Unlike bidirectional variants (e.g., 1.5SMC30CA), it does not conduct during negative transients, avoiding unintended conduction in polarized circuits. Its 1.5SMC30AHE3/57T clamping behavior is optimized for positive-going surges only, delivering tighter parameter control and higher reliability in asymmetric voltage environments.
What is the thermal resistance of the 1.5SMC30AHE3/57T, and how does it affect layout?
The 1.5SMC30AHE3/57T 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 requires PCB designers to allocate adequate copper area for heat dissipation during repetitive surge events; reducing pad size increases RθJA and may necessitate derating of peak pulse power. The 1.5SMC30AHE3/57T thermal performance is validated under this exact pad layout condition.
1.5SMC30AHE3/57T 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):
- 25.6V
- Voltage - Breakdown (Min):
- 28.5V
- Voltage - Clamping (Max) @ Ipp:
- 41.4V
- Current - Peak Pulse (10/1000µs):
- 36.2A
- 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)
1.5SMC30AHE3/57T FAQ
1.How can I place an order for 1.5SMC30AHE3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC30AHE3/57T 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 1.5SMC30AHE3/57T reliable?
The price and inventory of 1.5SMC30AHE3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC30AHE3/57T is usually 5 days.
3.What payment methods are accepted for 1.5SMC30AHE3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC30AHE3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC30AHE3/57T?
1.5SMC30AHE3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC30AHE3/57T 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 1.5SMC30AHE3/57T?
For technical support, including 1.5SMC30AHE3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC30AHE3/57T requirements.
6.How does Aetrix verify that 1.5SMC30AHE3/57T is sourced from the original manufacturer or authorized distributors?
All 1.5SMC30AHE3/57T 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 1.5SMC30AHE3/57T meets industry standards.
7.What is the process for return or replacement of 1.5SMC30AHE3/57T?
All 1.5SMC30AHE3/57T units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC30AHE3/57T, 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 1.5SMC30AHE3/57T part is unused and in its original packaging.
Return procedure for 1.5SMC30AHE3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC30AHE3/57T Tags
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