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Vishay General Semiconductor - Diodes Division P6SMB30A-M3/52
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- Part No.:
- P6SMB30A-M3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB30A-M3/52.pdf
- Description:
- TVS DIODE 25.6VWM 41.4VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:6,155
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Product details
Overview
P6SMB30A-M3/52 from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, rated for 30 V standoff voltage (VWM = 25.6 V), 41.4 V clamping voltage at 14.5 A peak pulse current, and 600 W peak pulse power with 10/1000 μs waveform. It protects MOSFETs, ICs, and sensor signal lines against inductive switching transients and ESD in industrial and automotive electronics.
For engineers reviewing the P6SMB30A-M3/52 datasheet, P6SMB30A-M3/52 pinout, P6SMB30A-M3/52 application, or P6SMB30A-M3/52 equivalent, key selection criteria include clamping voltage margin vs. protected device's absolute maximum rating, thermal resistance (RθJA = 100 °C/W), unidirectional polarity marking, and halogen-free RoHS-compliant M3 suffix qualification for commercial-grade reliability.
Technical Context
This TVS operates as a voltage-clamped shunt protector: under normal bias it presents high impedance (<1 μA leakage at 25.6 V), then rapidly avalanches below 31.5 V breakdown (VBR min) to divert surge energy away from downstream circuitry. Its glass-passivated junction ensures stable avalanche characteristics and low incremental surge resistance.
Designed for automated SMT placement on 0.2" × 0.2" copper pads, it meets J-STD-020 MSL Level 1 (peak reflow 260 °C) and supports repetitive 0.01% duty cycle surges. The cathode band denotes polarity; no marking is used for bidirectional variants - but P6SMB30A-M3/52 is explicitly unidirectional.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 25.6 V - Maximum continuous reverse voltage before significant leakage; must exceed system operating voltage to avoid false triggering. |
| VBR (Breakdown Voltage) | 28.5–31.5 V at 1 mA - Confirmed avalanche onset range; defines minimum overvoltage threshold for clamping activation. |
| VC (Clamping Voltage) | 41.4 V at IPPM = 14.5 A - Peak voltage seen by protected circuit during 10/1000 μs transient; must stay below downstream IC's absolute max rating. |
| PPPM (Peak Pulse Power) | 600 W - Maximum transient energy dissipation capability with standard 10/1000 μs waveform; derates above 25 °C per Fig. 2. |
| RθJA | 100 °C/W - Junction-to-ambient thermal resistance on recommended pad layout; determines temperature rise under sustained power dissipation. |
| IFSM (Surge Current) | 100 A - Non-repetitive 8.3 ms half-sine forward surge rating; validates robustness against inrush or fault currents in unidirectional configuration. |
| TJ max | +150 °C - Maximum allowable junction temperature; sets upper limit for ambient + self-heating in high-power transient scenarios. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, halogen-free, RoHS-compliant (M3 suffix), matte tin-plated leads solderable per J-STD-002. Cathode indicated by molded band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference terminal | Connected to ground or low-voltage rail; completes shunt path during reverse-biased transient event. |
| Cathode | High-side input terminal | Connected to protected line (e.g., 24 V supply or sensor output); avalanche conduction occurs when voltage exceeds VBR. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 μs) | Enables protection against IEC 61000-4-5 Level 3 (1 kV/2 Ω) surges without external series impedance. |
| Glass passivated junction | Ensures stable, repeatable avalanche behavior across temperature and lifetime; reduces parameter drift vs. epoxy-passivated alternatives. |
| MSL Level 1 moisture sensitivity | Allows direct placement without baking; compatible with standard lead-free reflow profiles up to 260 °C peak. |
| Halogen-free & RoHS-compliant (M3) | Fulfills environmental compliance requirements for commercial electronics without compromising surge performance. |
| Low clamping ratio (VC/VBR ≈ 1.36) | Minimizes overvoltage stress on protected devices - critical for 3.3 V or 5 V logic interfacing with higher-voltage domains. |
Applications
| Industrial Motor Control | Automotive Body Control Module |
|---|---|
|
Use Scenario: Protecting gate drivers and microcontroller I/O pins from inductive kickback during relay or solenoid switching in PLCs and motor drives. IC Role / Device Role / Timing Role: Shunt clamping device placed directly across protected node and ground, responding within <1 ns to suppress transients exceeding 25.6 V. Use Value: Prevents latch-up or permanent damage to 3.3 V/5 V MCUs and logic-level MOSFETs by limiting transient voltage to ≤41.4 V at 14.5 A. |
Use Scenario: Safeguarding LIN bus transceivers and sensor inputs (e.g., door lock actuators, ambient light sensors) against load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Unidirectional TVS connected between signal line and chassis ground, leveraging cathode-band polarity alignment with vehicle ground-referenced architecture. Use Value: Maintains signal integrity during 100 V/50 ms load dump events by clamping to 41.4 V before downstream analog front-end ICs exceed absolute maximum ratings. |
| Telecom Power Supply Input | Consumer Appliance Sensor Interface |
|
Use Scenario: Secondary-side overvoltage suppression on 24 V DC input rails of PoE-powered switches and base station power modules. IC Role / Device Role / Timing Role: Standoff-rated protector placed after bulk filter capacitor, absorbing residual transients that bypass primary-side MOVs or gas discharge tubes. Use Value: Provides precise 25.6 V hold-off with fast response to complement upstream protection, reducing risk of cascaded failure in multi-stage surge designs. |
Use Scenario: ESD and EFT protection on thermistor, humidity, or proximity sensor lines in smart home hubs and white goods control boards. IC Role / Device Role / Timing Role: Low-capacitance (<100 pF at 0 V) unidirectional clamp minimizing signal distortion on analog sensor outputs. Use Value: Enables reliable operation under IEC 61000-4-2 ±8 kV contact discharge without degrading millivolt-level sensor resolution or introducing offset error. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ30A | Same VWM (25.6 V), identical SMB package, but lower PPPM (400 W) and higher VC (48.4 V at 12.3 A). | Limited to lower-energy transients; unsuitable for IEC 61000-4-5 Level 3 without series impedance. | Select SMAJ30A only if system-level testing confirms 48.4 V clamping remains within protected IC's safe operating area. |
| 1.5SMC30A | Higher power (1500 W), larger SMC (DO-214AB) package, same VWM/VC specs, but requires PCB area increase and different thermal layout. | Used where higher single-pulse robustness is required, e.g., industrial AC input stages or battery disconnect circuits. | Choose 1.5SMC30A when surge energy exceeds 600 W capability and board space allows larger footprint and higher thermal mass. |
Compared with SMAJ30A, P6SMB30A-M3/52 delivers 50% higher peak pulse power and tighter clamping - critical for compact, high-density designs. Against 1.5SMC30A, it trades power headroom for smaller SMB footprint and lower RθJA on minimal copper, favoring space-constrained embedded systems.
Availability
P6SMB30A-M3/52 is available at Aetrix Electronics and suitable for industrial motor control, automotive body electronics, and telecom power supply applications requiring stable component supply, halogen-free compliance, and consistent surge performance across production batches.
Supply support for P6SMB30A-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, MOSFETs, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The P6SMB Series targets cost-sensitive, high-volume transient suppression needs in consumer, industrial, and automotive systems - delivering standardized 600 W surge capability in the compact SMB footprint with AEC-Q101 qualified variants available.
FAQ
What is the clamping voltage of P6SMB30A-M3/52 and how does it affect circuit protection?
The P6SMB30A-M3/52 has a maximum clamping voltage (VC) of 41.4 V at 14.5 A peak pulse current (10/1000 μs). This value defines the highest voltage imposed on the protected circuit during a transient event. For reliable protection, this clamping voltage must remain below the absolute maximum rating of downstream components - for example, ensuring 41.4 V stays under the 45 V rating of a typical 24 V industrial MCU I/O pin. The P6SMB30A-M3/52 achieves this with a low clamping ratio (VC/VBR ≈ 1.36), making it effective for safeguarding sensitive interfaces without requiring additional series impedance.
Is P6SMB30A-M3/52 suitable for automotive applications?
P6SMB30A-M3/52 is halogen-free and RoHS-compliant but not AEC-Q101 qualified - its base ordering code uses the M3 suffix for commercial grade. For automotive use, Vishay offers the HM3 variant (e.g., P6SMB30AHM3_B/H), which adds AEC-Q101 qualification and extended temperature validation. Engineers selecting P6SMB30A-M3/52 for automotive-adjacent systems (e.g., aftermarket telematics) must perform full system-level surge and lifetime validation, as the P6SMB30A-M3/52 itself lacks automotive-grade qualification documentation.
How does the SMB (DO-214AA) package of P6SMB30A-M3/52 compare to SMA or SMC packages in thermal performance?
The SMB package of P6SMB30A-M3/52 provides a thermal resistance of RθJA = 100 °C/W on standard 0.2" × 0.2" copper pads - higher than SMA (RθJA ≈ 85 °C/W) and significantly higher than SMC (RθJA ≈ 50–60 °C/W). This means the P6SMB30A-M3/52 heats more rapidly under sustained power dissipation. However, its design intent is for short-duration transients (not continuous power), so thermal mass is less critical than surge capability. For repeated surges, PCB copper area and layout become decisive - the P6SMB30A-M3/52 benefits from optimized pad design rather than package size alone.
What is the meaning of the "/52" suffix in P6SMB30A-M3/52?
The "/52" suffix in P6SMB30A-M3/52 specifies the packaging format: 7-inch diameter plastic tape and reel, containing 750 units per reel. This is a standard logistics designation used by Vishay for SMT components, enabling compatibility with pick-and-place equipment feeders. It does not affect electrical or thermal specifications - the core device remains identical to P6SMB30A-M3/5B (3200 units per 13-inch reel) or bare-die variants. All M3-suffix parts share halogen-free, RoHS-compliant construction and commercial-grade qualification.
Can P6SMB30A-M3/52 be used in bidirectional configurations?
No - P6SMB30A-M3/52 is strictly unidirectional, as confirmed by its part number suffix "A" (vs. "CA" for bidirectional versions like P6SMB30CA). Its cathode band marking and asymmetric IV curve require correct polarity orientation: cathode to the protected line, anode to ground. Attempting bidirectional use would result in forward conduction during negative transients, causing failure. For symmetrical protection, select P6SMB30CA-M3/52 instead - it has identical VWM, VBR, and VC ratings but functions identically in both directions.
P6SMB30A-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:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 25.6V
- Voltage - Breakdown (Min):
- 28.5V
- Voltage - Clamping (Max) @ Ipp:
- 41.4V
- Current - Peak Pulse (10/1000µs):
- 14.5A
- 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)
P6SMB30A-M3/52 FAQ
1.How can I place an order for P6SMB30A-M3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB30A-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 P6SMB30A-M3/52 reliable?
The price and inventory of P6SMB30A-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 P6SMB30A-M3/52 is usually 5 days.
3.What payment methods are accepted for P6SMB30A-M3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB30A-M3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB30A-M3/52?
P6SMB30A-M3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB30A-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 P6SMB30A-M3/52?
For technical support, including P6SMB30A-M3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB30A-M3/52 requirements.
6.How does Aetrix verify that P6SMB30A-M3/52 is sourced from the original manufacturer or authorized distributors?
All P6SMB30A-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 P6SMB30A-M3/52 meets industry standards.
7.What is the process for return or replacement of P6SMB30A-M3/52?
All P6SMB30A-M3/52 units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB30A-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 P6SMB30A-M3/52 part is unused and in its original packaging.
Return procedure for P6SMB30A-M3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB30A-M3/52 Tags
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