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Vishay General Semiconductor - Diodes Division P6SMB15A-M3/5B
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- Part No.:
- P6SMB15A-M3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB15A-M3/5B.pdf
- Description:
- TVS DIODE 12.8VWM 21.2VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:6,625
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Product details
Overview
P6SMB15A-M3/5B from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping voltage transients on power and signal lines. It features a 12.8 V stand-off voltage (VWM), 14.3–15.8 V breakdown voltage (VBR) at 1 mA, 21.2 V maximum clamping voltage (VC) at 28.3 A peak pulse current, and 600 W peak pulse power rating with 10/1000 μs waveform - used to protect MOSFETs, ICs, and sensor interfaces in industrial power supplies and automotive ECUs.
For engineers reviewing the P6SMB15A-M3/5B datasheet, P6SMB15A-M3/5B pinout, P6SMB15A-M3/5B application, or P6SMB15A-M3/5B equivalent, key selection criteria include unidirectional polarity, SMB package thermal resistance (RθJA = 100 °C/W), clamping performance under repetitive surge duty cycle (0.01 %), and halogen-free RoHS compliance per M3 suffix.
Technical Context
This TVS diode operates as a voltage-clamping protection device that enters avalanche conduction when reverse voltage exceeds its breakdown threshold (VBR = 14.3–15.8 V). Its low incremental surge resistance ensures minimal voltage overshoot during transient events, while glass-passivated junction enhances reliability under repeated 10/1000 μs surges up to 600 W.
The device is rated for -65 °C to +150 °C operating junction temperature, meets J-STD-020 MSL Level 1, and supports automated SMT placement. Its cathode band marking identifies polarity, and it delivers stable clamping down to 1.0 μA leakage at VWM - critical for low-power sensor line protection where standby current integrity matters.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 12.8 V - Maximum continuous reverse voltage before significant leakage; sets safe operating margin below system rail. |
| VBR (Breakdown) | 14.3–15.8 V at 1 mA - Confirmed avalanche onset range; defines minimum clamping trigger point. |
| VC (Clamping) | 21.2 V at 28.3 A IPPM - Peak voltage seen by protected circuit during 10/1000 μs transient; determines downstream component stress. |
| PPPM | 600 W - Surge energy handling capability with 10/1000 μs waveform; enables robust protection against inductive switching spikes. |
| RθJA | 100 °C/W - Junction-to-ambient thermal resistance on standard 0.2" × 0.2" copper pads; informs derating above 25 °C ambient. |
| Leakage (ID) | 1.0 μA max at VWM - Ensures negligible standby current draw in battery-powered or high-impedance signal paths. |
| Package | SMB (DO-214AA) - Low-profile SMT outline with 5.59 mm × 4.06 mm footprint; compatible with standard reflow profiles (peak 260 °C). |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, unidirectional polarity with cathode band marking. Dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H); matte tin-plated leads, solderable per J-STD-002.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side connection terminal | Connected to ground or lower-potential node; completes conduction path during reverse transient. |
| Cathode | High-side connection terminal | Connected to protected line (e.g., 12 V rail or signal input); marked with band; carries clamped surge current. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power | Handles high-energy transients (e.g., ISO 7637-2 Pulse 1/2a/5a) without degradation in automotive and industrial environments. |
| Glass passivated junction | Improves long-term stability and moisture resistance versus epoxy-passivated alternatives; supports >1000-hour HAST reliability. |
| MSL Level 1 rating | Enables floor-life unlimited storage and single-reflow processing without baking - reduces manufacturing overhead. |
| Halogen-free & RoHS-compliant (M3) | Fulfills IEC 61249-2-21 and JEDEC J-STD-020 requirements for green electronics; eliminates brominated flame retardants. |
| Low clamping ratio (VC/VBR ≈ 1.4) | Minimizes overvoltage exposure to downstream ICs - critical for 16 V-rated microcontrollers or CAN transceivers. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Suppressing load-dump and jump-start transients on 12 V battery-fed ECUs and body control modules. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and ground to clamp surges above 13.5 V. Use Value: Limits peak voltage to 21.2 V during 600 W pulses, preventing damage to 36 V-rated DC-DC converters and LIN transceivers. |
Use Scenario: Protecting analog inputs of pressure/temperature sensors connected to PLC I/O modules. IC Role / Device Role / Timing Role: Standoff protection element on 5 V or 24 V sensor supply lines, absorbing ESD and field-induced spikes. Use Value: 1.0 μA leakage at 12.8 V preserves signal integrity in high-impedance ratiometric measurement circuits. |
| Consumer Power Adapter Input Stage | Telecom Line Card Surge Protection |
Use Scenario: Safeguarding primary-side controllers and rectifiers in AC/DC adapters subject to lightning-induced surges. IC Role / Device Role / Timing Role: Secondary-side TVS on DC output rails (e.g., 12 V/19 V) to absorb cross-coupled transients from transformer leakage. Use Value: 21.2 V clamping ensures downstream LDOs and USB-PD controllers remain within absolute maximum ratings. |
Use Scenario: Front-end protection for Ethernet PHYs and PoE injectors exposed to induced surges on twisted-pair lines. IC Role / Device Role / Timing Role: Unidirectional clamping device on DC bias lines feeding active components like magnetics or isolation amplifiers. Use Value: SMB footprint allows dense layout near connectors; 100 °C/W RθJA supports operation in sealed telecom enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ15A-E3/5B | Same VWM (12.8 V), VC (21.2 V), and PPPM (600 W), but in smaller SMA (DO-214AC) package with higher RθJA (140 °C/W). | Limited power dissipation in confined spaces; less suitable for sustained surge repetition or high-ambient environments. | Select SMAJ15A-E3/5B only when board space is constrained and thermal budget permits higher junction rise. |
| 1.5SMC15A | Identical electrical specs but in larger SMC (DO-214AB) package with lower RθJA (60 °C/W) and 1.5 kW PPPM rating. | Overqualified for 600 W needs; occupies ~2.5× PCB area; better for high-repetition or high-temperature deployments. | Choose 1.5SMC15A when long-term reliability under frequent surges or >85 °C ambient is required - not for cost- or size-sensitive designs. |
Compared with P6SMB15A-M3/5B, SMAJ15A-E3/5B trades thermal performance for compactness, while 1.5SMC15A offers superior thermal and surge headroom at the expense of footprint - making P6SMB15A-M3/5B the balanced choice for mainstream automotive and industrial SMT layouts.
Availability
P6SMB15A-M3/5B is available at Aetrix Electronics and suitable for automotive ECU power rails, industrial sensor interfaces, consumer power adapter outputs, and telecom line card protection requiring stable component supply across production lifecycles.
Supply support for P6SMB15A-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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and AEC-Q qualification.
The P6SMB Series targets cost-effective, high-surge-capability TVS protection for automotive, industrial, and computing applications - engineered for automated assembly and long-term stability in harsh environments.
FAQ
What is the maximum clamping voltage of the P6SMB15A-M3/5B under a 10/1000 μs surge?
The P6SMB15A-M3/5B has a maximum clamping voltage (VC) of 21.2 V when subjected to its rated peak pulse current of 28.3 A with a 10/1000 μs waveform. This value is measured per Figure 1 in Vishay document 88370 and defines the upper voltage limit imposed on protected circuitry during standardized transient events - critical for ensuring downstream ICs remain within their absolute maximum ratings.
Does the P6SMB15A-M3/5B meet automotive qualification standards?
The P6SMB15A-M3/5B itself is commercial-grade (M3 suffix), not AEC-Q101 qualified. However, Vishay offers the automotive variant P6SMB15AHM3_B/5B (with "_B" revision code) which is AEC-Q101 qualified. Engineers selecting P6SMB15A-M3/5B for automotive use must verify system-level validation, as the base part lacks formal automotive stress testing certification.
What does the "M3/5B" suffix indicate in P6SMB15A-M3/5B?
In P6SMB15A-M3/5B, "M3" denotes halogen-free, RoHS-compliant construction meeting JEDEC J-STD-020 MSL Level 1, while "5B" specifies packaging in 13-inch diameter plastic tape and reel containing 3200 units. This format supports high-volume SMT assembly with verified moisture sensitivity and reel compatibility for pick-and-place equipment.
How does the thermal resistance of the P6SMB15A-M3/5B affect its surge capability at elevated temperatures?
The P6SMB15A-M3/5B has a typical RθJA of 100 °C/W on 0.2" × 0.2" copper pads. At ambient temperatures above 25 °C, its peak pulse power must be derated per Figure 2 in document 88370 - e.g., at 85 °C TA, usable PPPM drops to ~420 W. This derating directly impacts protection margin during sustained surge repetition in enclosed enclosures.
Can the P6SMB15A-M3/5B be used in bidirectional configurations?
No - the P6SMB15A-M3/5B is strictly unidirectional, as indicated by the "A" suffix and cathode band marking. For bidirectional operation, Vishay specifies the P6SMB15CA-M3/5B variant. Using P6SMB15A-M3/5B in AC-coupled or symmetrical signal paths risks forward conduction during negative half-cycles and invalidates clamping behavior.
P6SMB15A-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):
- 12.8V
- Voltage - Breakdown (Min):
- 14.3V
- Voltage - Clamping (Max) @ Ipp:
- 21.2V
- Current - Peak Pulse (10/1000µs):
- 28.3A
- 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)
P6SMB15A-M3/5B FAQ
1.How can I place an order for P6SMB15A-M3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB15A-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 P6SMB15A-M3/5B reliable?
The price and inventory of P6SMB15A-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 P6SMB15A-M3/5B is usually 5 days.
3.What payment methods are accepted for P6SMB15A-M3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB15A-M3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB15A-M3/5B?
P6SMB15A-M3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB15A-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 P6SMB15A-M3/5B?
For technical support, including P6SMB15A-M3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB15A-M3/5B requirements.
6.How does Aetrix verify that P6SMB15A-M3/5B is sourced from the original manufacturer or authorized distributors?
All P6SMB15A-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 P6SMB15A-M3/5B meets industry standards.
7.What is the process for return or replacement of P6SMB15A-M3/5B?
All P6SMB15A-M3/5B units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB15A-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 P6SMB15A-M3/5B part is unused and in its original packaging.
Return procedure for P6SMB15A-M3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB15A-M3/5B Tags
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Diodes Incorporated
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Diodes Incorporated
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