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Vishay General Semiconductor - Diodes Division 1.5SMC30AHM3/I
- Part No.:
- 1.5SMC30AHM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC30AHM3/I.pdf
- Description:
- TVS DIODE 25.6VWM 41.4VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:7,645
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Product details
Overview
1.5SMC30AHM3/I 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 breakdown voltage (VBR = 28.5–31.5 V at 1 mA), 25.6 V stand-off voltage (VWM), clamps to ≤41.4 V at 36.2 A peak pulse current, and delivers 1500 W peak pulse power with a 10/1000 μs waveform - used in automotive sensor interfaces and industrial I/O protection.
For engineers reviewing the 1.5SMC30AHM3/I datasheet, 1.5SMC30AHM3/I pinout, 1.5SMC30AHM3/I application, or 1.5SMC30AHM3/I equivalent, this page provides verified electrical parameters, SMC (DO-214AB) package details, AEC-Q101 qualification status, clamping performance under surge conditions, and direct alternative options for ESD and lightning transient suppression.
Technical Context
The 1.5SMC30AHM3/I operates as a unidirectional avalanche diode, conducting only when reverse voltage exceeds its breakdown threshold. Its glass-passivated junction ensures stable VBR tolerance (±5%) and low incremental surge resistance, enabling precise clamping during fast transients (response time <1.0 ns).
Designed for automated SMT assembly, it meets JESD201 Class 2 whisker resistance and MSL Level 1 (260 °C reflow). The halogen-free, RoHS-compliant HM3 suffix confirms compliance with automotive-grade reliability requirements per AEC-Q101, validated for operation from –65 °C to +150 °C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 28.5 V / 31.5 V at 1 mA - defines reliable conduction onset under surge, ±5% tolerance ensures predictable triggering in safety-critical circuits |
| VWM | 25.6 V - maximum continuous reverse operating voltage before leakage exceeds 1 μA; sets safe DC bias margin below clamping threshold |
| VC @ IPPM | ≤41.4 V at 36.2 A - clamped voltage during 1500 W transient; determines protected circuit's maximum stress level during surge events |
| PPPM | 1500 W (10/1000 μs) - peak surge power handling capacity; supports IEC 61000-4-5 Level 4 (4 kV) line protection without degradation |
| IFSM | 200 A (8.3 ms half-sine) - non-repetitive forward surge rating; enables survival of accidental polarity reversals or high-energy inductive kickback |
| TJ max. | +150 °C - maximum junction temperature; allows deployment in under-hood automotive environments and high-power industrial enclosures |
| RθJA | 75 °C/W - thermal resistance junction-to-ambient on standard 8 mm × 8 mm copper pads; informs heatsinking requirements for sustained power dissipation |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, halogen-free, RoHS-compliant, with matte tin-plated leads solderable per J-STD-002 and JESD22-B102. Cathode indicated by band; polarity critical for unidirectional operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Reverse voltage reference node | Connected to lower-potential side (e.g., ground or return path); defines directionality of clamping action |
| Cathode | Avalanche conduction terminal / Surge current sink | Banded end; connected to protected line (e.g., 24 V supply rail or CAN_H); carries full transient current to ground |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power (10/1000 μs) | Enables single-device protection against IEC 61000-4-5 surges up to 4 kV on 2 Ω/42 Ω coupling networks without derating |
| AEC-Q101 qualified (HM3 suffix) | Validated for automotive applications including engine control modules, body electronics, and ADAS sensor interfaces |
| Glass passivated junction | Ensures long-term stability of VBR and low leakage (<1 μA at VWM) across temperature and lifetime |
| Low profile SMC package | 0.320" × 0.246" footprint with 0.126" height - fits dense PCB layouts while maintaining >2.0 mm creepage/clearance |
| MSL Level 1, 260 °C peak reflow | Supports standard lead-free SMT processes without preconditioning or special handling |
Applications
| Automotive Sensor Interface Protection | Industrial PLC Digital Input Protection |
|---|---|
Use Scenario: Protecting 12 V/24 V analog and digital sensor lines (e.g., oxygen, pressure, position sensors) from load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Unidirectional TVS placed between sensor signal line and chassis ground, clamping transients before they reach ADC input or microcontroller GPIO. Use Value: Limits voltage seen by downstream IC to ≤41.4 V during 36.2 A surges, preventing latch-up or permanent damage in AEC-Q100-compliant systems. |
Use Scenario: Safeguarding 24 V DC digital inputs on programmable logic controllers exposed to relay coil flyback and field wiring ESD. IC Role / Device Role / Timing Role: Front-end transient suppressor on input terminal block, shunting energy away from optocoupler input stage and series current-limiting resistor. Use Value: Withstands repetitive 1500 W surges at 0.01% duty cycle, ensuring >10-year field reliability in factory automation environments. |
| Telecom Power Rail Protection | Motor Drive Control Signal Protection |
Use Scenario: Shielding 48 V PoE-powered Ethernet switch ports from lightning-induced surges on data lines and auxiliary power rails. IC Role / Device Role / Timing Role: Secondary-level TVS on DC-DC converter output, coordinated with primary GDT or MOV to meet UL 60950-1 and IEC 61000-4-5 requirements. Use Value: Fast <1 ns response and low clamping ratio (VC/VBR ≈ 1.45) minimize overshoot into sensitive PHY and PMIC circuitry. |
Use Scenario: Guarding isolated gate driver enable/disable signals (e.g., PWM inputs to SiC MOSFET drivers) against coupling from high-dV/dt motor phases. IC Role / Device Role / Timing Role: Localized TVS at driver input pad, referenced to local ground plane to suppress common-mode transients induced by parasitic capacitance. Use Value: 25.6 V VWM permits safe operation with 24 V logic supplies while clamping spikes to <42 V - within absolute maximum ratings of industry-standard gate drivers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ30A | Same VBR range (28.5–31.5 V), but SMB package (smaller footprint, lower PPPM = 600 W) | Limited to lower-energy transients (IEC 61000-4-2 ESD only); unsuitable for IEC 61000-4-5 line surges | Select SMBJ30A only where board space is constrained and surge threat level is limited to ±15 kV contact ESD. |
| 1.5KE30A | Through-hole DO-201 package, identical electrical specs, higher RθJA (≈100 °C/W), no AEC-Q101 qualification | Requires wave soldering; not approved for automotive use; less suitable for high-density SMT production | Choose 1.5KE30A for prototyping or legacy through-hole designs where reflow compatibility and automotive qualification are not required. |
Compared with 1.5SMC30AHM3/I, SMBJ30A trades surge robustness for compactness, while 1.5KE30A sacrifices SMT manufacturability and automotive validation for mechanical ruggedness - making 1.5SMC30AHM3/I the optimal choice for volume automotive and industrial SMT deployments requiring AEC-Q101 compliance and 1500 W capability.
Availability
1.5SMC30AHM3/I is available at Aetrix Electronics and suitable for automotive sensor protection, industrial PLC input conditioning, and telecom power rail safeguarding requiring stable component supply, long-lifecycle support, and traceable halogen-free sourcing.
Supply support for 1.5SMC30AHM3/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 MOSFETs with emphasis on reliability, power efficiency, and automotive-grade qualification.
The 1.5SMC Series was developed specifically for high-power, surface-mount transient suppression in harsh environments - targeting automotive, industrial, and telecom applications demanding AEC-Q101 validation and 1500 W surge immunity.
FAQ
What is the clamping voltage of the 1.5SMC30AHM3/I under maximum rated surge current?
The 1.5SMC30AHM3/I clamps to a maximum of 41.4 V when subjected to its peak pulse current of 36.2 A (10/1000 μs waveform). This value is measured per standard test conditions defined in the Vishay datasheet (Document Number: 88303) and reflects worst-case voltage seen by downstream circuitry during a full-rated transient event.
Is the 1.5SMC30AHM3/I suitable for automotive applications?
Yes, the 1.5SMC30AHM3/I is AEC-Q101 qualified (indicated by the HM3 suffix) and explicitly rated for automotive use. It meets stringent requirements for temperature cycling, humidity resistance, and surge endurance - validated for deployment in engine control units, body control modules, and ADAS sensor interfaces per ISO 16750-2 and ISO 7637-2 standards.
What does the "HM3" suffix mean in 1.5SMC30AHM3/I?
The "HM3" suffix in 1.5SMC30AHM3/I denotes halogen-free, RoHS-compliant construction with AEC-Q101 qualification. The "I" indicates packaging in 13-inch tape-and-reel (3500 units per reel), while "HM3" confirms compliance with automotive reliability testing and material restrictions - distinct from commercial-grade "M3" or "E3" variants.
How does the 1.5SMC30AHM3/I compare to bidirectional TVS diodes like 1.5SMC30CA?
The 1.5SMC30AHM3/I is unidirectional and intended for DC-biased lines where polarity is fixed (e.g., 24 V supply rails), offering tighter VBR tolerance and lower leakage. In contrast, 1.5SMC30CA is bidirectional and suited for AC or floating signal lines (e.g., RS-485, CAN), but exhibits higher leakage and asymmetric clamping behavior - making them functionally non-interchangeable without circuit redesign.
What is the maximum operating temperature for the 1.5SMC30AHM3/I?
The 1.5SMC30AHM3/I has a maximum junction temperature (TJ) of +150 °C and an operating storage temperature range of –65 °C to +150 °C. This rating enables reliable operation in under-hood automotive locations, industrial motor drives, and outdoor telecom equipment without thermal derating up to ambient temperatures of +125 °C (with appropriate PCB copper area).
1.5SMC30AHM3/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):
- 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:
- 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)
1.5SMC30AHM3/I FAQ
1.How can I place an order for 1.5SMC30AHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC30AHM3/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 1.5SMC30AHM3/I reliable?
The price and inventory of 1.5SMC30AHM3/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC30AHM3/I is usually 5 days.
3.What payment methods are accepted for 1.5SMC30AHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC30AHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC30AHM3/I?
1.5SMC30AHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC30AHM3/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 1.5SMC30AHM3/I?
For technical support, including 1.5SMC30AHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC30AHM3/I requirements.
6.How does Aetrix verify that 1.5SMC30AHM3/I is sourced from the original manufacturer or authorized distributors?
All 1.5SMC30AHM3/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 1.5SMC30AHM3/I meets industry standards.
7.What is the process for return or replacement of 1.5SMC30AHM3/I?
All 1.5SMC30AHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC30AHM3/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 1.5SMC30AHM3/I part is unused and in its original packaging.
Return procedure for 1.5SMC30AHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC30AHM3/I Tags
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ESD9B5.0ST5G
onsemi
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DESD3V3E1BL-7B
Diodes Incorporated
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ESD5Z3.3T1G
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Diodes Incorporated
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D5V0P1B2LP-7B
Diodes Incorporated
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DESD5V0U1BA-7
Diodes Incorporated
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ESD5Z5.0T1G
onsemi
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DESD5V0U1BB-7
Diodes Incorporated
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D12V0L1B2LP-7B
Diodes Incorporated
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PESD2V0Y1BSFYL
Nexperia USA Inc.
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DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
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Diodes Incorporated
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