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Vishay General Semiconductor - Diodes Division P6SMB120CA-M3/5B
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- Part No.:
- P6SMB120CA-M3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB120CA-M3/5B.pdf
- Description:
- TVS DIODE 102VWM 165VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:5,294
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Product details
Overview
P6SMB120CA-M3/5B from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the P6SMB series, designed for clamping voltage transients on signal or power lines. It features a 120 V standoff voltage (VWM), 137 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 - used to protect MOSFETs, ICs, and sensor interfaces in industrial and automotive electronics.
For engineers reviewing the P6SMB120CA-M3/5B datasheet, P6SMB120CA-M3/5B pinout, P6SMB120CA-M3/5B application, or P6SMB120CA-M3/5B equivalent, key selection criteria include bidirectional clamping behavior, SMB (DO-214AA) package compatibility, 150 °C max junction temperature, halogen-free RoHS compliance (M3 suffix), and AEC-Q101 qualification availability for automotive-grade variants.
Technical Context
This bidirectional TVS operates symmetrically in both polarities, delivering consistent clamping performance without polarity dependence. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1.0 μA at VWM), while the low incremental surge resistance enables effective transient energy diversion during fast-rising ESD or inductive switching events.
The device is rated for 600 W peak pulse power under standardized 10/1000 μs waveform conditions at 0.01% duty cycle, with thermal resistance of 100 °C/W (junction-to-ambient) and 20 °C/W (junction-to-lead). It meets J-STD-020 MSL Level 1 and supports reflow soldering up to 260 °C peak temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 102 V - Maximum continuous reverse voltage before clamping initiates; defines operating margin below breakdown. |
| VBR (Breakdown Voltage) | 114–126 V at 1.0 mA test current - Confirmed avalanche onset range; ensures predictable turn-on during overvoltage events. |
| VC (Clamping Voltage) | 165 V at IPPM = 3.6 A - Peak voltage seen by protected circuit during 10/1000 μs transient; critical for downstream component survivability. |
| PPPM (Peak Pulse Power) | 600 W - Sustained transient energy handling capacity per single 10/1000 μs pulse; defines protection robustness against lightning or load dump. |
| ID (Reverse Leakage) | ≤1.0 μA at VWM - Minimal standby current draw; preserves signal integrity and battery life in low-power systems. |
| TJ max. | 150 °C - Maximum allowable junction temperature; sets thermal derating limits for high-temperature environments. |
| Package | SMB (DO-214AA) - Standardized surface-mount outline with 5.59 mm × 3.94 mm footprint; compatible with automated placement and IPC-7351 design rules. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional configuration with no polarity marking. Terminals are matte tin-plated, solderable per J-STD-002 and JESD 22-B102. Mounting requires 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal for rated power dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bidirectional transient path | No defined anode/cathode; terminals interchangeable - enables clamping of positive and negative transients across same two pins. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 μs) | Enables robust protection against IEC 61000-4-5 surge events up to level 4 without degradation. |
| Halogen-free, RoHS-compliant (M3 suffix) | Meets environmental compliance requirements for industrial and automotive production without compromising thermal or electrical performance. |
| Low incremental surge resistance | Minimizes voltage overshoot during fast transients, improving clamping precision for sensitive 3.3 V or 5 V logic interfaces. |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and standard reflow without baking, reducing manufacturing overhead and handling risk. |
| AEC-Q101 qualification option | Available with HM3_B suffix for automotive applications requiring validated reliability under temperature cycling and humidity testing. |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
|
Use Scenario: Protecting CAN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load-dump and jump-start transients in 12 V vehicle subsystems. IC Role / Device Role / Timing Role: Bidirectional clamping element placed directly at connector entry point to shunt surge energy before reaching signal conditioning circuitry. Use Value: Maintains 102 V standoff while clamping to ≤165 V, ensuring downstream 120 V-rated op-amps and ADCs remain within safe operating area during 100 V/500 ms load dump. |
Use Scenario: Safeguarding digital input/output channels on programmable logic controllers exposed to inductive kickback from solenoids, relays, and motor drives. IC Role / Device Role / Timing Role: Fast-response transient suppressor mounted adjacent to terminal block to limit voltage excursions on 24 V DC control lines. Use Value: Delivers sub-1 ns response time and 600 W pulse handling, preventing latch-up or gate oxide damage in microcontroller GPIOs and optocoupler drivers. |
| Telecom Line Interface Protection | Consumer Power Adapter ESD Guard |
|
Use Scenario: Shielding Ethernet PHYs, RS-485 transceivers, and PoE injectors from lightning-induced surges on outdoor cabling in telecom infrastructure. IC Role / Device Role / Timing Role: Primary-level TVS in multi-stage protection scheme, absorbing bulk surge energy upstream of GDTs and polymer PTCs. Use Value: Symmetric 102 V standoff and 165 V clamping align with ITU-T K.21 basic protection levels, enabling compliance with GR-1089-CORE requirements. |
Use Scenario: Adding secondary-level surge immunity to AC-DC adapter outputs feeding USB-C PD controllers or wireless charging ICs. IC Role / Device Role / Timing Role: Low-capacitance (<50 pF) bidirectional clamp on 5–20 V output rails to suppress ESD and fast transients from hot-plug events. Use Value: 1.0 μA max leakage at 102 V prevents standby current drift in battery-backed systems; SMB package fits tight layout constraints near connectors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ120CA | Same 120 V VWM and bidirectional SMB package, but lower 400 W PPPM rating and higher 170 V VC at 3.2 A. | Less robust for high-energy surges; suitable only where IEC 61000-4-5 level 3 is sufficient. | Select SMAJ120CA only when cost sensitivity outweighs need for full 600 W surge margin. |
| 1.5KE120CA | Through-hole DO-201 package, 120 V VWM, 600 W PPPM, but 178 V VC at 3.4 A and slower thermal response due to larger junction mass. | Not suitable for dense SMT layouts; requires board real estate and wave-solder process. | Choose 1.5KE120CA only for legacy through-hole designs or where manual repair accessibility is prioritized over miniaturization. |
Compared with SMAJ120CA and 1.5KE120CA, P6SMB120CA-M3/5B delivers superior clamping ratio (VC/VWM = 1.62 vs. 1.42 and 1.48), tighter VBR tolerance (±5% vs. ±10%), and optimized SMT manufacturability - making it the preferred choice for new industrial and automotive PCB designs requiring high-reliability transient suppression.
Availability
P6SMB120CA-M3/5B is available at Aetrix Electronics and suitable for industrial automation, automotive electronics, and telecom infrastructure requiring stable component supply, halogen-free compliance, and long-term obsolescence management.
Supply support for P6SMB120CA-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, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The P6SMB series was developed to deliver high-power, low-profile TVS protection for modern SMT-based systems where space, thermal performance, and surge immunity must coexist - targeting automotive, industrial, and communications end markets.
FAQ
What is the clamping voltage of P6SMB120CA-M3/5B at its rated peak pulse current?
The P6SMB120CA-M3/5B has a maximum clamping voltage (VC) of 165 V at a peak pulse current (IPPM) of 3.6 A under the standardized 10/1000 μs waveform. This value is measured per Vishay's datasheet Figure 1 and Table on page 2, and defines the upper voltage limit imposed on protected circuitry during transient events. The P6SMB120CA-M3/5B maintains this clamping performance consistently across its operational temperature range.
Is P6SMB120CA-M3/5B suitable for automotive applications?
P6SMB120CA-M3/5B itself is commercial-grade with halogen-free RoHS compliance (M3 suffix), but Vishay offers AEC-Q101 qualified versions under ordering codes like P6SMB120CAHM3_B. While the P6SMB120CA-M3/5B is not AEC-Q101 certified, its 150 °C junction rating, MSL Level 1 rating, and robust 600 W surge capability make it suitable for non-safety-critical automotive subsystems such as body control modules or infotainment power rails - provided system-level validation confirms compliance.
How does the bidirectional nature of P6SMB120CA-M3/5B affect its circuit placement?
Because P6SMB120CA-M3/5B is bidirectional, it has no polarity marking and can be placed in either orientation across differential or single-ended lines without functional impact. This simplifies layout and eliminates orientation errors during automated assembly. In practice, the P6SMB120CA-M3/5B is placed directly between the protected line and ground (for single-line protection) or across two signal lines (for differential protection), leveraging its symmetrical IV curve to clamp both positive- and negative-going transients equally.
What is the thermal resistance of P6SMB120CA-M3/5B, and how does it influence PCB layout?
The P6SMB120CA-M3/5B has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W and junction-to-lead resistance (RθJL) of 20 °C/W. To achieve rated 600 W pulse power, the datasheet specifies mounting on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. Reducing pad size or omitting thermal vias increases junction temperature during repetitive surges - so PCB layout for P6SMB120CA-M3/5B must strictly follow Vishay's recommended pad dimensions and copper weight to maintain reliability.
Does P6SMB120CA-M3/5B have a specified junction capacitance, and is it suitable for high-speed data lines?
Vishay does not publish a guaranteed junction capacitance (CJ) spec for P6SMB120CA-M3/5B in the P6SMB datasheet; however, typical CJ is <50 pF at zero bias (per Fig. 4, extrapolated from adjacent 100 V and 150 V parts). While usable on moderate-speed lines like RS-485 or CAN, the P6SMB120CA-M3/5B is not recommended for >100 Mbps differential interfaces (e.g., USB 3.0, HDMI) where sub-5 pF capacitance is required. For such cases, dedicated low-capacitance TVS arrays should be considered instead of the P6SMB120CA-M3/5B.
P6SMB120CA-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:
- -
- 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-M3/5B FAQ
1.How can I place an order for P6SMB120CA-M3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB120CA-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 P6SMB120CA-M3/5B reliable?
The price and inventory of P6SMB120CA-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 P6SMB120CA-M3/5B is usually 5 days.
3.What payment methods are accepted for P6SMB120CA-M3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB120CA-M3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB120CA-M3/5B?
P6SMB120CA-M3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB120CA-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 P6SMB120CA-M3/5B?
For technical support, including P6SMB120CA-M3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB120CA-M3/5B requirements.
6.How does Aetrix verify that P6SMB120CA-M3/5B is sourced from the original manufacturer or authorized distributors?
All P6SMB120CA-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 P6SMB120CA-M3/5B meets industry standards.
7.What is the process for return or replacement of P6SMB120CA-M3/5B?
All P6SMB120CA-M3/5B units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB120CA-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 P6SMB120CA-M3/5B part is unused and in its original packaging.
Return procedure for P6SMB120CA-M3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB120CA-M3/5B Tags
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