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Vishay General Semiconductor - Diodes Division P6SMB120A-M3/5B
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- Part No.:
- P6SMB120A-M3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB120A-M3/5B.pdf
- Description:
- TVS DIODE 102VWM 165VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,769
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Product details
Overview
P6SMB120A-M3/5B 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 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, industrial, and telecom systems to safeguard MOSFETs, ICs, and sensor interfaces against inductive switching transients and ESD.
For engineers reviewing the P6SMB120A-M3/5B datasheet, P6SMB120A-M3/5B pinout, P6SMB120A-M3/5B application, or P6SMB120A-M3/5B equivalent, key selection criteria include its unidirectional polarity, SMB (DO-214AA) package compatibility, 102 V breakdown voltage range (114–126 V at 1 mA), low 1.0 μA reverse leakage at VWM, and halogen-free RoHS-compliant construction per M3 suffix.
Technical Context
The P6SMB120A-M3/5B operates as a clamping-type TVS diode with avalanche breakdown behavior, triggered when reverse voltage exceeds its specified VBR window (114–126 V at 1 mA test current). Its glass-passivated junction ensures stable performance under repetitive surge conditions and supports operation up to 150 °C junction temperature.
Designed for transient suppression on DC power rails and low-speed signal paths, it delivers fast response time (<1 ns), low incremental surge resistance, and meets J-STD-020 MSL Level 1 moisture sensitivity with 260 °C reflow peak. The device is not intended for continuous forward conduction but sustains 100 A non-repetitive IFSM surges in unidirectional configuration.
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 3.6 A IPPM - Peak voltage seen by protected circuit during 10/1000 μs surge; determines stress on downstream components. |
| PPPM (Peak Pulse Power) | 600 W - Sustained energy absorption capacity under standardized 10/1000 μs waveform at 0.01% duty cycle. |
| ID (Reverse Leakage) | 1.0 μA max at VWM - Minimal standby current loss; critical for low-power and battery-backed systems. |
| Package | SMB (DO-214AA) - Standardized surface-mount outline with 5.59 mm × 4.06 mm footprint and 2.20 mm height; compatible with automated pick-and-place. |
| TJ max | 150 °C - Maximum allowable junction temperature; enables use in under-hood automotive and high-ambient industrial environments. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, unidirectional configuration with cathode band marking. Dimensions: 5.59 mm × 4.06 mm × 2.20 mm. Matte tin-plated leads, solderable per J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Surge return path | Connected to ground or low-impedance return plane; carries full surge current during clamping event. |
| Cathode | Protected line connection / Clamping reference | Connected to line being protected (e.g., 12 V rail); reverse-biased during normal operation, avalanches during overvoltage. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 μs) | Enables reliable suppression of high-energy transients common in automotive load-dump and industrial motor switching events. |
| Halogen-free, RoHS-compliant (M3 suffix) | Meets environmental compliance requirements for modern electronics manufacturing without compromising thermal or electrical performance. |
| MSL Level 1, 260 °C reflow compatible | Supports standard lead-free PCB assembly processes without preconditioning or special handling. |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients, improving protection margin for sensitive downstream ICs. |
| Glass passivated chip junction | Ensures long-term reliability and stable VBR over temperature and lifetime, critical for automotive and industrial deployments. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V/24 V power distribution networks in engine control units (ECUs) and body control modules from ISO 7637-2 load-dump pulses and inductive kickback. IC Role / Device Role / Timing Role: Unidirectional clamping TVS placed between supply rail and chassis ground to limit transient voltage to ≤165 V. Use Value: Prevents latch-up or permanent damage to microcontrollers and power management ICs during vehicle cranking or alternator regulation faults. |
Use Scenario: Safeguarding analog output lines (e.g., 4–20 mA current loops) and digital I/O of pressure/temperature sensors in factory automation equipment exposed to relay coil switching noise. IC Role / Device Role / Timing Role: Standoff-connected TVS on sensor signal line to clamp EFT bursts and fast transients before reaching ADC input or isolation barrier. Use Value: Maintains measurement integrity and prevents false triggering or reset events in PLC-connected field devices. |
| Telecom DC Power Input Protection | Consumer Equipment AC/DC Adapter Output Protection |
Use Scenario: Secondary-side overvoltage suppression on +48 V DC inputs of telecom base station cards subjected to lightning-induced surges on long cable runs. IC Role / Device Role / Timing Role: Primary transient shunt on DC input rail upstream of DC-DC converters and PMICs. Use Value: Limits surge energy delivered to point-of-load regulators, avoiding catastrophic failure and enabling system-level compliance with ITU-T K.20/21 standards. |
Use Scenario: Output-stage protection on wall adapters powering USB-C PD accessories, smart speakers, or set-top boxes where output short-circuit or hot-plug events may induce voltage spikes. IC Role / Device Role / Timing Role: Unidirectional TVS across regulated 5 V/9 V/12 V output to clamp overshoot during dynamic load changes or fault recovery. Use Value: Eliminates need for redundant output capacitors or complex feedback compensation while ensuring end-product safety certification (UL/EN 62368-1). |
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 VWM (102 V), VC = 165 V, but lower PPPM (400 W); SMA package (smaller footprint, higher RθJA). | Limited to lower-energy transients; unsuitable for automotive load-dump where 600 W rating is required. | Select only if board space is constrained and surge threat level is below ISO 7637-2 Pulse 5a. |
| 1.5SMC120A | Same electrical specs (VWM = 102 V, VC = 165 V, PPPM = 600 W), but SMC (DO-214AB) package - 7.11 mm × 6.22 mm, ~2× larger footprint. | Higher thermal mass improves sustained surge handling but requires more PCB area and may not fit compact layouts. | Choose when enhanced thermal performance is prioritized over miniaturization, e.g., in high-temperature industrial enclosures. |
Compared with SMAJ120A-E3/5B and 1.5SMC120A, the P6SMB120A-M3/5B uniquely balances 600 W surge capability, SMB footprint efficiency, and halogen-free compliance - making it optimal for space-constrained automotive and industrial designs requiring AEC-Q101-grade reliability without MSL rework.
Availability
P6SMB120A-M3/5B is available at Aetrix Electronics and suitable for automotive ECUs, industrial sensor nodes, telecom power supplies, and consumer adapter outputs requiring stable component supply with halogen-free compliance and MSL Level 1 assembly support.
Supply support for P6SMB120A-M3/5B 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, power handling, and automotive qualification.
The P6SMB Series was engineered for high-energy transient suppression in harsh environments, targeting applications demanding AEC-Q101 qualification, stable clamping performance, and compatibility with automated SMT assembly lines.
FAQ
What is the clamping voltage of the P6SMB120A-M3/5B under a 10/1000 μs surge?
The P6SMB120A-M3/5B has a maximum clamping voltage (VC) of 165 V when subjected to its rated peak pulse current of 3.6 A with a 10/1000 μs waveform. This value is measured per industry-standard test conditions defined in the datasheet and represents the upper voltage limit imposed on the protected circuit during transient events. Designers must ensure downstream components tolerate this clamping level under worst-case surge conditions.
Is the P6SMB120A-M3/5B suitable for automotive applications?
Yes, the P6SMB120A-M3/5B is qualified to AEC-Q101 when ordered with the "_B" revision suffix (e.g., P6SMB120A-M3_B/5B). The base P6SMB120A-M3/5B itself is commercial-grade but shares identical electrical and thermal specifications; for automotive deployment, specify the AEC-Q101 variant to ensure stress-test validation and lot traceability required by OEMs.
What does the "M3" suffix mean in P6SMB120A-M3/5B?
The "M3" suffix in P6SMB120A-M3/5B indicates halogen-free, RoHS-compliant construction per Vishay's material categorization standards. It denotes compliance with JEDEC J-STD-20 and JESD201 Class 2 whisker resistance, alongside matte tin plating and UL 94 V-0 molding compound - distinguishing it from the "E3" (RoHS-compliant, non-halogen-free) variant.
How does the SMB package of the P6SMB120A-M3/5B compare to SMA or SMC packages?
The SMB (DO-214AA) package of the P6SMB120A-M3/5B measures 5.59 mm × 4.06 mm, offering a 30% smaller footprint than SMC (DO-214AB) and 15% larger than SMA (DO-214AC). Its thermal resistance (RθJA = 100 °C/W) balances power dissipation and board space - making the P6SMB120A-M3/5B ideal for mid-power applications where SMA lacks sufficient surge rating and SMC is unnecessarily large.
Can the P6SMB120A-M3/5B be used in bidirectional configurations?
No - the P6SMB120A-M3/5B is strictly unidirectional, indicated by the "A" suffix and cathode band marking. For bidirectional protection, Vishay offers the P6SMB120CA-M3/5B variant, which provides symmetrical clamping in both polarities and uses the same SMB package but different internal structure and electrical characteristics (e.g., VWM = 102 V, VBR = 114–126 V in either direction).
P6SMB120A-M3/5B Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- P6SMB, TransZorb®
- Packaging:
- Tape & Box (TB)
- Product Status:
- Active
- 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBJ)
P6SMB120A-M3/5B FAQ
1.How can I place an order for P6SMB120A-M3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB120A-M3/5B 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 P6SMB120A-M3/5B reliable?
The price and inventory of P6SMB120A-M3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB120A-M3/5B is usually 5 days.
3.What payment methods are accepted for P6SMB120A-M3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB120A-M3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB120A-M3/5B?
P6SMB120A-M3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB120A-M3/5B 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 P6SMB120A-M3/5B?
For technical support, including P6SMB120A-M3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB120A-M3/5B requirements.
6.How does Aetrix verify that P6SMB120A-M3/5B is sourced from the original manufacturer or authorized distributors?
All P6SMB120A-M3/5B 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 P6SMB120A-M3/5B meets industry standards.
7.What is the process for return or replacement of P6SMB120A-M3/5B?
All P6SMB120A-M3/5B units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB120A-M3/5B, 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 P6SMB120A-M3/5B part is unused and in its original packaging.
Return procedure for P6SMB120A-M3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB120A-M3/5B Tags
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Diodes Incorporated
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