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Vishay General Semiconductor - Diodes Division P6SMB120CA-M3/52
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- Part No.:
- P6SMB120CA-M3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB120CA-M3/52.pdf
- Description:
- TVS DIODE 102VWM 165VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:8,170
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Product details
Overview
P6SMB120CA-M3/52 from Vishay General Semiconductor is a bidirectional 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 (PPPM) with 10/1000 μs waveform. It protects sensitive ICs, MOSFETs, and sensor signal lines against inductive switching transients and lightning surges in industrial and telecom systems.
For engineers reviewing the P6SMB120CA-M3/52 datasheet, P6SMB120CA-M3/52 pinout, P6SMB120CA-M3/52 application, or P6SMB120CA-M3/52 equivalent, key selection criteria include bidirectional clamping behavior, 165 V VC under 3.6 A surge, halogen-free RoHS-compliant M3 suffix, SMB package thermal resistance (RθJA = 100 °C/W), and AEC-Q101 qualification eligibility via HM3 variant.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, with breakdown voltage (VBR) of 114–126 V at 1 mA test current and maximum reverse leakage (ID) ≤1.0 μA at 102 V standoff. Its low clamping ratio (VC/VWM ≈ 1.63) and fast response time ensure effective protection of downstream circuitry during transient events.
Designed for surface-mount automated assembly, it features glass-passivated junction, matte tin-plated leads compliant with J-STD-002 and JESD 22-B102, and meets MSL Level 1 per J-STD-020 with 260 °C reflow peak temperature tolerance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 102 V - Maximum continuous reverse voltage before clamping begins; defines operating margin below breakdown |
| VBR (Breakdown) | 114–126 V at 1 mA - Confirmed voltage range where device transitions to low-impedance conduction |
| VC (Clamping) | 165 V at IPPM = 3.6 A - Peak voltage seen by protected circuit during 10/1000 μs surge; critical for safe IC stress limits |
| PPPM | 600 W - Surge energy handling capability with standard 10/1000 μs waveform; enables robust transient immunity |
| RθJA | 100 °C/W - Junction-to-ambient thermal resistance on recommended 0.2" × 0.2" copper pads; guides PCB thermal design |
| Package | SMB (DO-214AA) - Standardized 2-pin surface-mount outline with 5.59 mm length and 3.94 mm width; compatible with high-volume SMT lines |
| Compliance | Halogen-free, RoHS-compliant (M3 suffix); meets UL 94 V-0 flammability rating for molding compound |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional - no polarity marking; symmetrical terminal configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Transient conduction path | Both terminals function identically in bidirectional mode; no cathode band marking; connects across protected line and ground or differential pair |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power | Supports high-energy transient suppression without failure under IEC 61000-4-5 Level 4 surge conditions |
| 165 V clamping at 3.6 A | Ensures protected ICs remain below absolute maximum ratings during 10/1000 μs surges |
| MSL Level 1 moisture sensitivity | Enables direct placement without baking; compatible with standard 260 °C lead-free reflow profiles |
| Glass passivated junction | Provides stable, repeatable breakdown characteristics and long-term reliability under repeated surge stress |
| Halogen-free & RoHS-compliant (M3) | Fulfills environmental compliance requirements for industrial and automotive supply chains |
Applications
| Industrial Motor Drives | Automotive Sensor Interfaces |
|---|---|
Use Scenario: Protection of gate drivers and feedback signal lines in variable-frequency drives exposed to inductive kickback from AC motors. IC Role / Device Role / Timing Role: Bidirectional TVS clamps voltage spikes on isolated analog inputs and PWM control lines during motor commutation. Use Value: Prevents latch-up or permanent damage to op-amps and microcontrollers by limiting transients to ≤165 V while maintaining signal integrity. | Use Scenario: ESD and load-dump protection on LIN/CAN sensor nodes (e.g., temperature, pressure) in engine compartments. IC Role / Device Role / Timing Role: Standoff at 102 V allows normal 12 V system operation; clamps 12 V battery dump transients up to ±100 V. Use Value: Enables use of cost-effective commercial-grade MCUs in harsh environments without additional discrete filtering. |
| Telecom Power Feeds | Consumer IoT Gateways |
Use Scenario: Secondary-side surge protection on 48 V PoE-powered Ethernet switches and base stations. IC Role / Device Role / Timing Role: Placed across DC input rails to absorb induced lightning surges coupled through cabling. Use Value: Maintains system uptime by preventing overvoltage shutdown of PMICs and Ethernet PHYs during field surges. | Use Scenario: Input protection for USB-C PD and Zigbee/Thread radio modules in smart home hubs. IC Role / Device Role / Timing Role: Bidirectional clamping guards differential data lines and 5 V/3.3 V power domains against human-body-model ESD. Use Value: Eliminates need for separate unidirectional TVS pairs; reduces BOM count and PCB area in space-constrained designs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ120CA | Same VWM (102 V), identical SMB package, but lower PPPM (600 W same), slightly higher VC (165 V vs. 167 V) | Functionally interchangeable in most 120 V-rated circuits; minor VC variance within design margin | Select when sourcing from alternate manufacturers with aligned inventory; verify layout compatibility with SMB footprint |
| 1.5KE120CA | Higher power (1500 W), axial DO-201 package, larger footprint, higher RθJA (~50 °C/W on PCB) | Requires board redesign; suited for higher-energy surges where SMB thermal limits are exceeded | Choose only if 600 W is insufficient and board space allows axial component placement |
Compared with SMBJ120CA and 1.5KE120CA, P6SMB120CA-M3/52 offers optimized SMT manufacturability, halogen-free compliance, and verified performance in compact industrial layouts-making it preferred for high-density, RoHS-aligned production.
Availability
P6SMB120CA-M3/52 is available at Aetrix Electronics and suitable for industrial motor drives, automotive sensor interfaces, telecom power feeds, and consumer IoT gateways requiring stable component supply and consistent surge protection performance.
Supply support for P6SMB120CA-M3/52 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, and protection devices with emphasis on reliability, power efficiency, and automotive-grade qualification.
The P6SMB Series targets cost-sensitive, high-volume transient suppression needs in industrial, telecom, and automotive electronics-designed for automated assembly, robust surge handling, and long-term stability under thermal cycling.
FAQ
What is the clamping voltage of P6SMB120CA-M3/52 and how does it protect downstream components?
The P6SMB120CA-M3/52 has a maximum clamping voltage (VC) of 165 V at 3.6 A peak pulse current (IPPM) with a 10/1000 μs waveform. This means that during a transient event, the device limits the voltage seen by protected circuitry to ≤165 V, keeping sensitive ICs like microcontrollers and interface transceivers within their absolute maximum ratings. The low clamping ratio (VC/VWM ≈ 1.63) ensures efficient energy diversion without overstressing adjacent components, and the bidirectional symmetry allows protection on AC-coupled or floating signal paths.
Is P6SMB120CA-M3/52 suitable for automotive applications?
P6SMB120CA-M3/52 itself is commercial-grade with halogen-free RoHS compliance (M3 suffix), but Vishay offers AEC-Q101 qualified variants under HM3 suffix (e.g., P6SMB120CAHM3_B/H). For automotive use, designers must specify the HM3 version to ensure qualification for temperature cycling, humidity, and mechanical shock. The P6SMB120CA-M3/52 may be used in non-safety-critical automotive subsystems where full AEC-Q101 is not mandated, but validation per vehicle-level EMC and environmental tests remains the customer's responsibility.
How does the SMB (DO-214AA) package of P6SMB120CA-M3/52 affect thermal performance?
The SMB (DO-214AA) package of P6SMB120CA-M3/52 has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. This value assumes standard PCB layout per Vishay's recommended pad dimensions. To maintain reliability under repetitive surges, designers should ensure adequate copper area and avoid excessive trace impedance. The package's low profile and MSL Level 1 rating also support high-yield reflow assembly without pre-baking.
What is the difference between P6SMB120CA-M3/52 and unidirectional P6SMB120A-M3/52?
P6SMB120CA-M3/52 is bidirectional, meaning it clamps voltage transients equally in both directions with symmetrical VBR (114–126 V) and no polarity marking. In contrast, P6SMB120A-M3/52 is unidirectional, featuring a cathode band and conducting only in reverse bias - it blocks forward current and clamps only negative-going transients relative to its marked cathode. The "CA" suffix explicitly denotes bidirectional functionality, making P6SMB120CA-M3/52 appropriate for AC lines, differential signals, or floating grounds where polarity is undefined.
Does P6SMB120CA-M3/52 require external series impedance for optimal protection?
No, P6SMB120CA-M3/52 does not require external series impedance to function as a shunt TVS, but adding a small series resistor or ferrite bead upstream improves current sharing and reduces di/dt stress during clamping. The device responds in <1 ps and clamps autonomously once VWM is exceeded. However, in high-speed data lines (e.g., USB, CAN), designers often combine P6SMB120CA-M3/52 with low-capacitance filters to avoid signal distortion - junction capacitance is not specified for this part, but typical SMB bidirectional TVS values range 100–300 pF at zero bias.
P6SMB120CA-M3/52 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:
- -
- Bidirectional Channels:
- 1
- 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)
P6SMB120CA-M3/52 FAQ
1.How can I place an order for P6SMB120CA-M3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB120CA-M3/52 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 P6SMB120CA-M3/52 reliable?
The price and inventory of P6SMB120CA-M3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB120CA-M3/52 is usually 5 days.
3.What payment methods are accepted for P6SMB120CA-M3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB120CA-M3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB120CA-M3/52?
P6SMB120CA-M3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB120CA-M3/52 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 P6SMB120CA-M3/52?
For technical support, including P6SMB120CA-M3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB120CA-M3/52 requirements.
6.How does Aetrix verify that P6SMB120CA-M3/52 is sourced from the original manufacturer or authorized distributors?
All P6SMB120CA-M3/52 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 P6SMB120CA-M3/52 meets industry standards.
7.What is the process for return or replacement of P6SMB120CA-M3/52?
All P6SMB120CA-M3/52 units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB120CA-M3/52, 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 P6SMB120CA-M3/52 part is unused and in its original packaging.
Return procedure for P6SMB120CA-M3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB120CA-M3/52 Tags
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