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Vishay General Semiconductor - Diodes Division P6SMB120AHM3/I
- Part No.:
- P6SMB120AHM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB120AHM3/I.pdf
- Description:
- TVS DIODE 102VWM 165VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:8,667
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Product details
Overview
P6SMB120AHM3/I from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the P6SMB series, designed for robust overvoltage protection of DC power rails and signal lines. It features a 120 V standoff voltage (VWM), 165 V maximum clamping voltage (VC) at 3.6 A peak pulse current (IPPM), and 600 W peak pulse power capability with a 10/1000 μs waveform - deployed in automotive-grade, halogen-free, RoHS-compliant SMB (DO-214AA) package.
For engineers reviewing the P6SMB120AHM3/I datasheet, P6SMB120AHM3/I pinout, P6SMB120AHM3/I application, or P6SMB120AHM3/I equivalent, key selection criteria include its AEC-Q101 qualification, low thermal resistance (RθJL = 20 °C/W), unidirectional polarity with cathode band marking, and suitability for high-reliability industrial and automotive transient suppression where clamping performance and MSL Level 1 moisture sensitivity are critical.
Technical Context
The P6SMB120AHM3/I operates as a silicon avalanche diode, leveraging glass-passivated junction technology to deliver fast response time (<1 ns) and stable breakdown behavior under repetitive surge conditions. Its unidirectional architecture enables integration into DC-biased circuits where reverse-polarity conduction must be blocked.
It is rated for 150 °C maximum junction temperature and derates linearly above 25 °C ambient per Figure 2; thermal performance relies on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pad layout per specification. The device meets JESD201 Class 2 whisker resistance and is qualified to AEC-Q101 for automotive applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 102 V - Maximum continuous reverse operating voltage before clamping begins; defines safe DC bias margin. |
| VBR (Breakdown Voltage) | 114–126 V at 1 mA - Confirmed avalanche initiation range; ensures predictable turn-on during transients. |
| VC (Clamping Voltage) | 165 V at IPPM = 3.6 A - Peak voltage seen by protected circuit during 10/1000 μs surge; determines stress on downstream components. |
| PPPM (Peak Pulse Power) | 600 W - Sustained energy-handling capacity under standardized surge waveform; validates robustness against IEC 61000-4-5 surges. |
| ID (Reverse Leakage) | 1.0 μA max at VWM - Ultra-low leakage preserves system efficiency and prevents false triggering in high-impedance nodes. |
| TJ max | 150 °C - Enables operation in under-hood automotive or industrial environments without thermal shutdown. |
| RθJL | 20 °C/W - Low junction-to-lead thermal resistance supports reliable power dissipation without external heatsinking. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, halogen-free, RoHS-compliant, MSL Level 1 (260 °C peak reflow). Cathode indicated by molded band on body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side (e.g., ground or return path); conducts during forward surge or bias conditions. |
| Cathode | Avalanche clamping terminal | Connected to protected line (e.g., +12 V rail); initiates clamping when reverse voltage exceeds VBR; marked with band. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive electronics including engine control units and ADAS sensors requiring long-term reliability under thermal cycling and vibration. |
| 600 W peak pulse power (10/1000 μs) | Withstands IEC 61000-4-5 Level 4 surges (4 kV line-earth) without degradation when properly mounted on recommended copper pads. |
| Glass-passivated junction | Ensures stable VBR over lifetime and immunity to humidity-induced parameter drift in harsh environments. |
| MSL Level 1 rating | Allows unlimited floor life and standard reflow profiles up to 260 °C peak - eliminates baking requirements and simplifies SMT manufacturing. |
| Halogen-free & RoHS-compliant (HM3 suffix) | Meets EU Directive 2011/65/EU and IPC-1752A material declarations; supports green manufacturing and end-of-life compliance. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: Protecting 12 V/24 V battery-fed ECUs from load dump and alternator transients per ISO 7637-2. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power input and ground to clamp positive-going surges above 102 V. Use Value: Limits voltage to ≤165 V during 3.6 A surge events, preventing damage to LDOs, microcontrollers, and CAN transceivers. |
Use Scenario: Safeguarding analog sensor outputs (e.g., pressure, temperature) connected to PLC inputs against ESD and switching noise. IC Role / Device Role / Timing Role: TVS shunt-connected across signal and reference lines to suppress sub-100 ns transients induced by relay coil flyback. Use Value: Sub-1 ns response and <1 μA leakage preserve signal integrity and measurement accuracy in 24-bit ADC front-ends. |
| Telecom DC Power Input | Consumer Device USB Power Path |
|
Use Scenario: Guarding PoE-powered network switches and base stations against lightning-induced surges on 48 V DC input rails. IC Role / Device Role / Timing Role: Primary overvoltage clamp upstream of DC-DC converters and hot-swap controllers. Use Value: 600 W rating handles repeated 10/1000 μs surges while RθJL = 20 °C/W enables stable thermal performance without heatsinks. |
Use Scenario: Adding secondary surge protection on USB-C VBUS lines in portable devices subjected to accidental 20 V adapter misconnection. IC Role / Device Role / Timing Role: Unidirectional TVS placed between VBUS and GND to absorb 100 A ESD events (IEC 61000-4-2) and slow surges. Use Value: 102 V VWM avoids interference with normal 5–20 V VBUS operation while clamping >165 V faults within nanoseconds. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ120A-E3/5B | Same 120 V VWM and 165 V VC, but in SMA (DO-214AC) package; higher RθJA (150 °C/W) and no AEC-Q101 qualification. | Limited to commercial-grade industrial or consumer use; not suitable for automotive under-hood deployment. | Select when cost or legacy board layout favors SMA footprint and AEC-Q101 is not required. |
| 1.5SMC120A | Same electrical specs but in larger SMC (DO-214AB) package; higher thermal mass but requires 30% more PCB area. | Better sustained surge handling in high-temperature enclosures; less suited for space-constrained automotive modules. | Choose when thermal margin is prioritized over size, and board real estate permits SMC outline. |
Compared with SMAJ120A-E3/5B and 1.5SMC120A, the P6SMB120AHM3/I uniquely combines AEC-Q101 qualification, halogen-free construction, and SMB footprint - making it the optimal choice for next-generation automotive and industrial designs demanding both reliability and miniaturization.
Availability
P6SMB120AHM3/I is available at Aetrix Electronics and suitable for automotive ECUs, industrial sensor interfaces, telecom power supplies, and consumer USB-C power path protection requiring stable component supply, full traceability, and lifecycle continuity.
Supply support for P6SMB120AHM3/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, MOSFETs, optoelectronics, and passive components with emphasis on reliability, efficiency, and application-specific optimization.
The P6SMB series targets high-energy transient suppression in space-constrained, high-reliability systems - engineered for automotive, industrial, and telecom applications where consistent clamping, low leakage, and AEC-Q101 validation are mandatory.
FAQ
What is the clamping voltage of the P6SMB120AHM3/I at its rated peak pulse current?
The P6SMB120AHM3/I has a maximum clamping voltage (VC) of 165 V at its specified peak pulse current (IPPM) of 3.6 A under a 10/1000 μs waveform. This value is measured per Figure 1 and Table on page 2 of the Vishay datasheet 88370, and defines the upper voltage limit imposed on protected circuitry during surge events. The P6SMB120AHM3/I maintains this clamping performance across its qualified operating temperature range.
Is the P6SMB120AHM3/I suitable for automotive applications?
Yes, the P6SMB120AHM3/I is AEC-Q101 qualified (denoted by the HM3 suffix and "_B" revision code per ordering table), making it suitable for automotive applications including engine control units, body electronics, and ADAS sensor modules. Its construction includes halogen-free molding compound, matte tin-plated leads compliant with J-STD-002, and MSL Level 1 rating - all validated per automotive reliability standards. The P6SMB120AHM3/I meets these requirements out-of-the-box without derating.
How does the P6SMB120AHM3/I differ from the P6SMB120A variant?
The P6SMB120AHM3/I differs from the base P6SMB120A by three key attributes: (1) HM3 suffix indicates halogen-free and RoHS-compliant construction, (2) "_B" revision code confirms AEC-Q101 qualification, and (3) "/I" denotes 3200-unit tape-and-reel packaging on 13-inch reels. Electrically and thermally, the P6SMB120AHM3/I matches the P6SMB120A's 102 V VWM, 165 V VC, and 600 W PPPM - but adds automotive-grade assurance and green material compliance that the base variant lacks.
What is the thermal resistance from junction to lead (RθJL) for the P6SMB120AHM3/I?
The P6SMB120AHM3/I has a typical thermal resistance from junction to lead (RθJL) of 20 °C/W, as specified in the Thermal Characteristics table on page 3 of Vishay document 88370. This low value enables efficient heat transfer from the silicon die to the PCB copper pads through the leads, supporting reliable operation at full 600 W surge ratings without external heatsinking - provided the recommended 0.2" × 0.2" pad layout is used. The P6SMB120AHM3/I leverages this to sustain repeated surge events in compact layouts.
Does the P6SMB120AHM3/I have polarity marking, and how is it identified?
Yes, the P6SMB120AHM3/I is a unidirectional TVS diode and features a visible cathode band on the SMB (DO-214AA) package body - located near one end of the molded case. Per datasheet mechanical drawing on page 5, this band identifies the cathode terminal, which must be connected to the line being protected (e.g., +12 V rail), while the anode connects to ground or return. Bidirectional variants omit this marking; the P6SMB120AHM3/I's band confirms correct orientation during automated placement and manual inspection.
P6SMB120AHM3/I Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- P6SMB, TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 102V
- Voltage - Breakdown (Min):
- 114V
- Voltage - Clamping (Max) @ Ipp:
- 165V
- Current - Peak Pulse (10/1000µs):
- 3.6A
- Power - Peak Pulse:
- 600W
- 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-214AA (SMB)
P6SMB120AHM3/I FAQ
1.How can I place an order for P6SMB120AHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB120AHM3/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 P6SMB120AHM3/I reliable?
The price and inventory of P6SMB120AHM3/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB120AHM3/I is usually 5 days.
3.What payment methods are accepted for P6SMB120AHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB120AHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB120AHM3/I?
P6SMB120AHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB120AHM3/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 P6SMB120AHM3/I?
For technical support, including P6SMB120AHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB120AHM3/I requirements.
6.How does Aetrix verify that P6SMB120AHM3/I is sourced from the original manufacturer or authorized distributors?
All P6SMB120AHM3/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 P6SMB120AHM3/I meets industry standards.
7.What is the process for return or replacement of P6SMB120AHM3/I?
All P6SMB120AHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB120AHM3/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 P6SMB120AHM3/I part is unused and in its original packaging.
Return procedure for P6SMB120AHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB120AHM3/I Tags
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