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Vishay General Semiconductor - Diodes Division P6SMB120AHM3_A/I
- Part No.:
- P6SMB120AHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB120AHM3_A/I.pdf
- Description:
- TVS DIODE 102VWM 165VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,159
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Product details
Overview
P6SMB120AHM3_A/I from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, rated for 120 V standoff voltage (VWM), 165 V clamping voltage (VC) at 3.6 A peak pulse current (IPPM), and 600 W peak pulse power (10/1000 μs waveform). It protects MOSFETs, ICs, and sensor signal lines against inductive switching transients and lightning surges in industrial and automotive electronics.
For engineers reviewing the P6SMB120AHM3_A/I datasheet, P6SMB120AHM3_A/I pinout, P6SMB120AHM3_A/I application, or P6SMB120AHM3_A/I equivalent, key selection criteria include its AEC-Q101 qualification (HM3 suffix), halogen-free RoHS compliance, 150 °C max junction temperature, and low thermal resistance (RθJL = 20 °C/W) enabling robust surge handling in space-constrained PCB layouts.
Technical Context
The P6SMB120AHM3_A/I operates as a unidirectional avalanche diode with glass-passivated junction, exhibiting fast response time (<1 ns) and low incremental surge resistance to clamp transient overvoltages before downstream components are damaged. Its breakdown voltage (VBR) is specified at 114–126 V (min/max) with 1 mA test current, ensuring precise voltage thresholding.
Designed for automated SMT placement, it meets J-STD-020 MSL Level 1 (peak reflow 260 °C) and JESD201 Class 2 whisker resistance. The cathode band identifies polarity, and its SMB package provides UL 94 V-0 flammability rating with matte tin-plated leads solderable per J-STD-002.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 102 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR (Breakdown) | 114–126 V at 1 mA - Precise avalanche initiation range defining turn-on threshold |
| VC (Clamping) | 165 V at IPPM = 3.6 A - Peak voltage seen by protected circuit during 10/1000 μs surge |
| PPPM | 600 W - Surge energy absorption capability under standardized transient waveform |
| ID (Leakage) | 1.0 μA max at VWM - Negligible standby power loss and minimal signal interference |
| TJ max | +150 °C - Enables reliable operation in under-hood automotive and high-temperature industrial environments |
| RθJL | 20 °C/W - Low junction-to-lead thermal resistance supports efficient heat dissipation into PCB copper pads |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, single-ended unidirectional configuration with cathode band marking. Dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H); recommended pad layout: 5.0 mm × 5.0 mm copper per terminal.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during forward conduction | Connected to protected line's low-side reference (e.g., GND or return path) in unidirectional TVS configuration |
| Cathode | Current exit point during reverse-biased clamping | Connected to the line being protected (e.g., power rail or signal trace); band denotes this terminal |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified (HM3 suffix) | Validated for automotive-grade reliability including temperature cycling, humidity bias, and mechanical shock testing |
| Halogen-free & RoHS-compliant | Meets global environmental regulations without compromising surge performance or thermal stability |
| 600 W peak pulse power (10/1000 μs) | Withstands high-energy transients common in motor drives, power supplies, and ECU interfaces |
| Low clamping ratio (VC/VBR ≈ 1.38) | Minimizes overvoltage stress on protected ICs-critical for 3.3 V/5 V logic and automotive microcontrollers |
| MSL Level 1 (260 °C peak) | Compatible with standard lead-free reflow profiles without preconditioning or special handling |
Applications
| Automotive Power Line Protection | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs from load-dump and alternator ripple transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and chassis ground to clamp surges above 102 V. Use Value: Prevents latch-up or permanent damage to MCU power inputs while maintaining <1 μA leakage at nominal 12 V operation. |
Use Scenario: Shielding analog output lines of pressure/temperature sensors from ESD and cable discharge events. IC Role / Device Role / Timing Role: Low-capacitance TVS connected across differential signal pair (e.g., 4–20 mA loop) to suppress sub-100 ns transients. Use Value: Clamps to ≤165 V within nanoseconds, preserving signal integrity without loading the 100 kΩ+ sensor output impedance. |
| Telecom DC Power Input Stage | Consumer Appliance Motor Drive Interface |
Use Scenario: Safeguarding PoE-powered switch ports against induced surges on 48 V DC input rails. IC Role / Device Role / Timing Role: Primary overvoltage clamp upstream of DC-DC converter, sized for repetitive 600 W pulses. Use Value: Absorbs multiple 10/1000 μs transients at 0.01% duty cycle without derating, supporting long-term field reliability. |
Use Scenario: Suppressing back-EMF spikes generated by brushed DC motors in washing machines or HVAC blowers. IC Role / Device Role / Timing Role: Mounted across motor terminals to divert inductive kickback away from driver FETs and control logic. Use Value: Limits voltage overshoot to 165 V, preventing gate oxide rupture in 200 V-rated MOSFETs and reducing EMI emissions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ120A-E3/5B | Same VWM (102 V), lower PPPM (400 W), non-AEC-Q101, commercial-grade M3 suffix only | Lacks automotive qualification and halogen-free certification; suitable for cost-sensitive consumer designs | Select when AEC-Q101 and halogen-free requirements are not mandated, and 400 W surge margin suffices |
| 1.5SMC120AHE3_A | Same VWM (102 V), identical AEC-Q101/HM3 qualification, but SMC (DO-214AB) package - 20 % larger footprint | Requires PCB layout change due to larger 7.11 mm × 6.22 mm body; higher thermal mass improves sustained surge handling | Choose when board space allows larger package and enhanced thermal inertia is prioritized over miniaturization |
Compared with P6SMB120AHM3_A/I, SMAJ120A-E3/5B offers reduced surge capacity and no automotive qualification, while 1.5SMC120AHE3_A delivers equivalent protection with greater thermal robustness at the cost of increased PCB area-making P6SMB120AHM3_A/I optimal for space-constrained AEC-Q101 designs.
Availability
P6SMB120AHM3_A/I is available at Aetrix Electronics and suitable for automotive ECUs, industrial sensor modules, telecom power interfaces, and appliance motor controllers requiring stable component supply with full AEC-Q101 traceability and halogen-free compliance.
Supply support for P6SMB120AHM3_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 diodes, rectifiers, TVS devices, and optoelectronics with emphasis on reliability, efficiency, and application-specific optimization.
The P6SMB Series targets high-reliability transient suppression in automotive, industrial, and telecom systems, engineered for automated assembly, thermal resilience, and consistent clamping performance across temperature and lifetime.
FAQ
What is the maximum clamping voltage of the P6SMB120AHM3_A/I under a 10/1000 μs surge?
The P6SMB120AHM3_A/I clamps to a maximum of 165 V when subjected to its rated peak pulse current of 3.6 A under the standard 10/1000 μs waveform. This value is measured at the device terminals and defines the upper voltage limit imposed on protected circuits during transient events, ensuring compatibility with 150 V-rated downstream components.
Is the P6SMB120AHM3_A/I suitable for automotive applications?
Yes, the P6SMB120AHM3_A/I is AEC-Q101 qualified (indicated by the HM3 suffix) and specifically designed for automotive use. It undergoes rigorous stress testing-including temperature cycling, high-temperature reverse bias, and mechanical shock-to ensure reliability in engine control units, body electronics, and ADAS sensor interfaces where transient immunity is critical.
What does the "HM3" suffix signify in P6SMB120AHM3_A/I?
The "HM3" suffix in P6SMB120AHM3_A/I denotes halogen-free, RoHS-compliant construction with AEC-Q101 qualification. The "H" indicates halogen-free molding compound, "M3" confirms RoHS compliance and JESD201 Class 2 whisker resistance, and the "_A/I" specifies 13-inch tape-and-reel packaging with IEC 61249-2-21 compliant materials.
How does the P6SMB120AHM3_A/I differ from bidirectional variants like P6SMB120CA?
The P6SMB120AHM3_A/I is unidirectional and features a cathode band for polarity identification, intended for DC line protection where surge direction is known. In contrast, P6SMB120CA is bidirectional with symmetrical clamping in both directions and no polarity marking-used in AC-coupled or floating signal paths where voltage polarity reverses, such as telecom data lines or audio interfaces.
What is the thermal resistance from junction to lead (RθJL) for the P6SMB120AHM3_A/I?
The P6SMB120AHM3_A/I has a typical junction-to-lead thermal resistance (RθJL) of 20 °C/W, measured under standard conditions. This low value enables efficient heat transfer from the silicon die to the PCB copper pads, supporting repeated 600 W surge events without exceeding the 150 °C maximum junction temperature-especially important in compact, high-density automotive modules.
P6SMB120AHM3_A/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:
- Obsolete
- 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_A/I FAQ
1.How can I place an order for P6SMB120AHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB120AHM3_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 P6SMB120AHM3_A/I reliable?
The price and inventory of P6SMB120AHM3_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 P6SMB120AHM3_A/I is usually 5 days.
3.What payment methods are accepted for P6SMB120AHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB120AHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB120AHM3_A/I?
P6SMB120AHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB120AHM3_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 P6SMB120AHM3_A/I?
For technical support, including P6SMB120AHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB120AHM3_A/I requirements.
6.How does Aetrix verify that P6SMB120AHM3_A/I is sourced from the original manufacturer or authorized distributors?
All P6SMB120AHM3_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 P6SMB120AHM3_A/I meets industry standards.
7.What is the process for return or replacement of P6SMB120AHM3_A/I?
All P6SMB120AHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB120AHM3_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 P6SMB120AHM3_A/I part is unused and in its original packaging.
Return procedure for P6SMB120AHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB120AHM3_A/I Tags
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