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Vishay General Semiconductor - Diodes Division 1.5SMC150AHM3/I
- Part No.:
- 1.5SMC150AHM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC150AHM3/I.pdf
- Description:
- TVS DIODE 128VWM 207VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:3,453
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Product details
Overview
1.5SMC150AHM3/I from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode designed for high-energy surge protection in power and signal lines. It delivers 1500 W peak pulse power (10/1000 μs), clamps at 207 V under 7.2 A peak pulse current, and features a 128 V standoff voltage with ≤1.0 μA leakage at 25 °C. It is halogen-free, RoHS-compliant, and qualified to AEC-Q101 for automotive applications.
For engineers reviewing the 1.5SMC150AHM3/I datasheet, 1.5SMC150AHM3/I pinout, 1.5SMC150AHM3/I application, or 1.5SMC150AHM3/I equivalent, this device is selected for robust overvoltage protection where fast response (<1 ns), low clamping ratio (VC/VBR ≈ 1.45), and MSL Level 1 reflow compatibility are critical - especially in automotive ECUs, industrial power supplies, and telecom interface circuits.
Technical Context
The 1.5SMC150AHM3/I operates as a unidirectional avalanche diode, leveraging glass-passivated junction technology for stable breakdown behavior and low incremental surge resistance. Its 10/1000 μs waveform rating reflects standardized lightning and inductive-switching transient immunity per IEC 61000-4-5.
Thermal performance is defined by RθJA = 75 °C/W and RθJL = 15 °C/W, requiring minimum 8.0 mm × 8.0 mm copper pads per terminal for rated PPPM derating. The cathode band identifies polarity, and operation is limited to TJ = –65 °C to +150 °C with no marking on bidirectional variants.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power (10/1000 μs) | 1500 W - sustains single high-energy transients without failure, e.g., ISO 7637-2 Pulse 5a in automotive 12 V systems |
| Standoff Voltage (VWM) | 128 V - maximum continuous reverse voltage before significant leakage; sets upper limit for normal operating bus voltage |
| Breakdown Voltage (VBR @ 1 mA) | 143–158 V - guaranteed avalanche initiation range; ensures predictable clamping onset across temperature and unit variation |
| Clamping Voltage (VC @ IPPM) | 207 V - maximum voltage seen by protected circuit during 7.2 A transient; defines worst-case stress on downstream components |
| Leakage Current (ID @ VWM) | ≤1.0 μA at 25 °C - negligible standby power loss and minimal impact on high-impedance sensor or reference circuits |
| Junction Temperature Range | –65 °C to +150 °C - supports under-hood automotive and industrial environments without thermal shutdown or parameter drift |
| Package | SMC (DO-214AB) - industry-standard surface-mount outline with 0.320" x 0.246" footprint and matte tin-plated leads compliant to J-STD-002 |
Pinout & Package
Package: SMC (DO-214AB), molded case with UL 94 V-0 flammability rating, cathode identified by a visible band on the body. Terminals are matte tin plated and solderable per J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point in forward bias; connected to ground or low-side return path in unidirectional TVS configuration | Provides low-impedance path to ground during reverse-transient clamping; must be routed with minimal inductance to preserve clamping speed |
| Cathode | Current exit point in forward bias; connected to protected line (e.g., CAN_H, 12 V rail, USB_VBUS) | Defines polarity-sensitive placement; band orientation must match schematic symbol to avoid catastrophic reverse conduction during normal operation |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power (10/1000 μs) | Enables protection against severe transients like load dump (ISO 16750-2) and EFT bursts without derating in compact layouts |
| AEC-Q101 qualified (HM3 suffix) | Validated for automotive-grade reliability including temperature cycling, HTRB, and mechanical shock - required for Tier 1 ECU designs |
| Halogen-free & RoHS-compliant | Meets EU Directive 2011/65/EU and IPC-1752A material declarations; supports green manufacturing and end-of-life compliance |
| MSL Level 1 (260 °C peak) | Allows single-reflow assembly without moisture sensitivity concerns - eliminates bake requirements and reduces production risk |
| Glass-passivated junction | Delivers stable VBR over lifetime and improved resistance to humidity-induced degradation versus epoxy-passivated alternatives |
Applications
| Automotive Power Line Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed control modules (e.g., body controllers, lighting ECUs) from load dump and jump-start surges. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and chassis ground to clamp transients above 128 V. Use Value: Limits peak voltage to 207 V during 7.2 A pulses, preventing damage to 36 V-rated DC-DC converters and microcontrollers. |
Use Scenario: Safeguarding analog sensor inputs (e.g., pressure, temperature) in PLC I/O modules exposed to field wiring noise. IC Role / Device Role / Timing Role: Low-leakage (≤1 μA) TVS shunting induced transients on 4–20 mA loop or 0–10 V signal lines. Use Value: Maintains signal integrity with <1.0 μA leakage at 128 V standoff, avoiding offset errors in precision 24-bit ADC front-ends. |
| Telecom DC Power Feeds | Motor Drive Gate Driver Protection |
Use Scenario: Securing -48 V DC power inputs in base station remote radio units (RRUs) against lightning-induced surges on outdoor cabling. IC Role / Device Role / Timing Role: High-power unidirectional TVS mounted at board edge, referenced to system ground with low-inductance layout. Use Value: Withstands 1500 W pulses while clamping below 207 V, protecting upstream DC/DC converters and PMICs rated for 60 V max input. |
Use Scenario: Shielding high-side gate drivers (e.g., driving 600 V IGBTs) from Miller-induced voltage spikes during switching transitions. IC Role / Device Role / Timing Role: Fast-response (sub-nanosecond) TVS placed across gate-to-source of driver IC to suppress dv/dt-induced false turn-on. Use Value: Clamps transients within 1 ns, limiting gate voltage overshoot to ≤207 V and preserving driver SOA during 100 kHz+ PWM operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ150A-E3/52T | Lower peak pulse power (600 W), SMB package (smaller footprint, higher RθJA = 85 °C/W), same VWM/VBR range | Not rated for AEC-Q101; suitable for commercial-grade consumer or computing power rails only | Select when space-constrained layouts prioritize footprint over automotive qualification and surge margin |
| 1.5KE150A-T | Through-hole DO-201 package, identical electrical specs but incompatible with SMT assembly and MSL handling | Lacks MSL Level 1 rating and halogen-free compliance; unsuitable for automated high-volume production | Choose only for legacy through-hole designs or prototyping where reflow compatibility is not required |
Compared with 1.5SMC150AHM3/I, SMBJ150A-E3/52T offers smaller size but sacrifices 60% pulse power headroom and automotive qualification, while 1.5KE150A-T retains full electrical equivalence but prevents modern SMT manufacturing and fails environmental compliance requirements.
Availability
1.5SMC150AHM3/I is available at Aetrix Electronics and suitable for automotive electronic control units, industrial programmable logic controllers, and telecom power supply designs requiring stable component supply, long-term lifecycle support, and AEC-Q101 traceability.
Supply support for 1.5SMC150AHM3/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, MOSFETs, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The 1.5SMC Series targets high-energy transient suppression in harsh environments, with design focus on automotive, industrial, and telecom infrastructure where robustness, AEC-Q101 compliance, and standardized SMC packaging are mandatory.
FAQ
What is the clamping voltage of the 1.5SMC150AHM3/I at its rated peak pulse current?
The 1.5SMC150AHM3/I clamps to a maximum of 207 V when subjected to its specified peak pulse current of 7.2 A under the standard 10/1000 μs waveform. This value is measured at TJ = 25 °C and represents the worst-case voltage imposed on the protected circuit during transient events, ensuring downstream components remain within safe operating limits.
Is the 1.5SMC150AHM3/I suitable for automotive applications?
Yes, the 1.5SMC150AHM3/I is AEC-Q101 qualified (denoted by the HM3 suffix), making it suitable for automotive applications including engine control units, body electronics, and ADAS power domains. It meets stringent requirements for temperature cycling, high-temperature reverse bias, and mechanical shock, and is halogen-free and RoHS-compliant per automotive supply chain standards.
What does the "HM3" suffix indicate in 1.5SMC150AHM3/I?
The "HM3" suffix in 1.5SMC150AHM3/I specifies halogen-free, RoHS-compliant construction with AEC-Q101 qualification. The "H" denotes halogen-free molding compound, "M3" confirms RoHS compliance and JESD201 Class 2 whisker resistance, and the "I" indicates packaging in 13-inch tape-and-reel format (3500 units per reel).
How does the 1.5SMC150AHM3/I compare to bidirectional TVS diodes in circuit implementation?
The 1.5SMC150AHM3/I is unidirectional and requires correct polarity placement - cathode toward the protected line, anode to ground - unlike bidirectional types that suppress both positive and negative transients symmetrically. It offers lower leakage and tighter VBR tolerance than equivalent bidirectional parts, but cannot protect AC-coupled or differential lines without additional circuitry.
What is the thermal resistance and recommended PCB layout for optimal performance of the 1.5SMC150AHM3/I?
The 1.5SMC150AHM3/I has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W, achievable only when mounted on minimum 8.0 mm × 8.0 mm copper pads per terminal. To maintain rated 1500 W pulse capability, use wide, short traces to ground, avoid thermal vias under the body, and ensure solder mask-defined pads per Vishay's recommended land pattern for DO-214AB.
1.5SMC150AHM3/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):
- 128V
- Voltage - Breakdown (Min):
- 143V
- Voltage - Clamping (Max) @ Ipp:
- 207V
- Current - Peak Pulse (10/1000µs):
- 7.2A
- 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)
1.5SMC150AHM3/I FAQ
1.How can I place an order for 1.5SMC150AHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC150AHM3/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 1.5SMC150AHM3/I reliable?
The price and inventory of 1.5SMC150AHM3/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC150AHM3/I is usually 5 days.
3.What payment methods are accepted for 1.5SMC150AHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC150AHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC150AHM3/I?
1.5SMC150AHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC150AHM3/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 1.5SMC150AHM3/I?
For technical support, including 1.5SMC150AHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC150AHM3/I requirements.
6.How does Aetrix verify that 1.5SMC150AHM3/I is sourced from the original manufacturer or authorized distributors?
All 1.5SMC150AHM3/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 1.5SMC150AHM3/I meets industry standards.
7.What is the process for return or replacement of 1.5SMC150AHM3/I?
All 1.5SMC150AHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC150AHM3/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 1.5SMC150AHM3/I part is unused and in its original packaging.
Return procedure for 1.5SMC150AHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC150AHM3/I Tags
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ESD9B5.0ST5G
onsemi
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DESD3V3E1BL-7B
Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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onsemi
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DESD5V0U1BB-7
Diodes Incorporated
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Diodes Incorporated
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Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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