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Vishay General Semiconductor - Diodes Division P6SMB15AHM3_A/H
- Part No.:
- P6SMB15AHM3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB15AHM3_A/H.pdf
- Description:
- TVS DIODE 12.8VWM 21.2VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:9,189
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Product details
Overview
P6SMB15AHM3_A/H from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, rated for 15 V standoff voltage (VWM = 12.8 V), 21.2 V clamping voltage at 28.3 A peak pulse current (10/1000 μs), and 600 W peak pulse power. It protects MOSFETs, ICs, and sensor signal lines against inductive switching transients and ESD in automotive and industrial power rails.
For engineers reviewing the P6SMB15AHM3_A/H datasheet, P6SMB15AHM3_A/H pinout, P6SMB15AHM3_A/H application, or P6SMB15AHM3_A/H equivalent, key selection criteria include clamping voltage margin relative to protected device's absolute maximum rating, thermal derating above 25 °C, unidirectional polarity marking (cathode band), and AEC-Q101 qualification status for automotive use.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: under normal bias it presents high impedance (<1 μA leakage at 12.8 V), then rapidly avalanches below 15.8 V breakdown (VBR min) to divert surge current away from downstream circuitry. Its glass-passivated junction ensures stable breakdown and low incremental surge resistance.
Designed for 10/1000 μs waveform compliance, it delivers 28.3 A peak pulse current with 21.2 V clamping - critical for maintaining safe stress margins on 12 V rail components. The SMB package supports automated placement and meets J-STD-020 MSL Level 1 (260 °C peak reflow).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 12.8 V - Maximum continuous reverse voltage before significant leakage; sets upper limit for protected circuit operating voltage. |
| VBR (Breakdown Voltage) | 14.3–15.8 V at 1 mA - Confirmed avalanche onset range; ensures reliable triggering before downstream device damage threshold. |
| VC (Clamping Voltage) | 21.2 V at IPPM = 28.3 A - Peak voltage seen by protected IC during 600 W transient; must stay below IC's absolute max rating. |
| PPPM (Peak Pulse Power) | 600 W - Sustained energy-handling capability per 10/1000 μs waveform; defines transient robustness level. |
| IR (Reverse Leakage) | 1.0 μA max at VWM - Minimal standby power loss and signal integrity impact on sensitive analog/sensor inputs. |
| TJ max | 150 °C - Maximum junction temperature; enables operation in under-hood automotive environments with proper PCB copper thermal relief. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002. Cathode identified by molded band on body end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry during forward conduction; grounded reference node in unidirectional TVS configuration | Connected to system ground or low-impedance return path to enable clamping action when cathode-side surge exceeds VBR. |
| Cathode | Protected line connection point; marked with band | Connected directly to the line being protected (e.g., 12 V supply rail); avalanche occurs between cathode and anode during overvoltage events. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, humidity, and mechanical shock - required for under-hood ECUs and ADAS modules. |
| 600 W peak pulse power (10/1000 μs) | Handles ISO 7637-2 Pulse 1 and Pulse 2a transients without degradation; sufficient for 12 V battery line protection. |
| Low clamping ratio (VC/VBR ≈ 1.43) | Minimizes overvoltage stress on protected devices - e.g., clamps to 21.2 V while breaking down at ≥14.3 V. |
| MSL Level 1 (260 °C peak) | Compatible with standard lead-free reflow profiles without preconditioning; eliminates moisture-related popcorning risk. |
| Glass passivated junction | Ensures stable VBR over lifetime and temperature; prevents parameter drift in harsh industrial environments. |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC Digital Input Protection |
|---|---|
Use Scenario: Protecting microcontroller GPIOs and CAN transceiver power pins from load dump and inductive kickback in vehicle lighting circuits. IC Role / Device Role / Timing Role: Unidirectional shunt TVS placed between 12 V rail and ground, triggered within nanoseconds of overvoltage event. Use Value: Clamps transients to ≤21.2 V, keeping MCU I/O pins within 30 V absolute maximum rating and preventing latch-up or gate oxide damage. |
Use Scenario: Safeguarding 24 V digital input channels on programmable logic controllers exposed to relay coil flyback and field wiring surges. IC Role / Device Role / Timing Role: Primary overvoltage clamp on input terminal block, upstream of optocoupler or Schmitt trigger interface. Use Value: Limits voltage excursion to 21.2 V during 600 W transients, ensuring optocoupler CTR stability and eliminating false triggering. |
| Consumer Appliance Motor Drive Board | Telecom Power Supply Input Stage |
Use Scenario: Shielding MCU power domains and gate drivers from commutation spikes generated by brushed DC motors in washing machines or HVAC blowers. IC Role / Device Role / Timing Role: Localized TVS on 5 V/3.3 V LDO inputs and half-bridge driver VDD pins. Use Value: Sub-25 ns response time suppresses <100 ns spikes before they propagate into logic circuitry, reducing firmware reset incidents. |
Use Scenario: Front-end surge suppression on AC-DC adapter primary-side rectifier output feeding telecom base station power management ICs. IC Role / Device Role / Timing Role: Secondary-stage TVS after MOV, providing precise clamping where MOV tolerance is too wide. Use Value: Tight 14.3–15.8 V VBR window ensures consistent clamping across production lots, improving batch-to-batch power supply reliability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ15A-E3/5B | Same SMB package, 15 V VWM, but lower PPPM (400 W) and higher VC (24.4 V at 17.2 A) | Not AEC-Q101 qualified; limited to commercial-grade consumer/industrial use | Select when cost sensitivity outweighs automotive qualification and 600 W surge headroom. |
| 1.5SMC15A | Same electrical specs but in larger SMC (DO-214AB) package; 100 °C/W RθJA vs. 100 °C/W for SMB | Lower power density; requires more PCB area; not optimized for high-density automotive modules | Choose only if legacy SMC footprint compatibility is mandatory and space constraints allow. |
Compared with SMAJ15A-E3/5B and 1.5SMC15A, P6SMB15AHM3_A/H uniquely combines AEC-Q101 qualification, 600 W rating, and SMB footprint - making it the only option meeting automotive Tier-1 requirements for compact, high-reliability 12 V rail protection.
Availability
P6SMB15AHM3_A/H is available at Aetrix Electronics and suitable for automotive electronics, industrial control systems, and telecom infrastructure requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for P6SMB15AHM3_A/H 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 application-specific performance.
The P6SMB Series targets high-energy transient suppression in space-constrained, high-reliability applications - especially automotive power distribution, industrial automation, and telecom infrastructure where AEC-Q101 compliance and 600 W pulse handling are mandatory.
FAQ
What is the clamping voltage of P6SMB15AHM3_A/H and why does it matter?
The P6SMB15AHM3_A/H has a maximum clamping voltage (VC) of 21.2 V at 28.3 A peak pulse current (10/1000 μs). This value defines the highest voltage imposed on protected circuitry during a surge event. For example, when safeguarding a 12 V microcontroller power rail, this clamping level ensures the IC remains below its 30 V absolute maximum rating - preventing permanent damage or functional interruption. The P6SMB15AHM3_A/H achieves this with low incremental surge resistance and fast avalanche response.
Is P6SMB15AHM3_A/H qualified for automotive applications?
Yes, P6SMB15AHM3_A/H is AEC-Q101 qualified, as indicated by the "HM3" suffix (halogen-free, RoHS-compliant, and AEC-Q101 qualified) and underscored revision code "_A/H". This qualification covers stress tests including temperature cycling, high-temperature operating life, and mechanical shock - confirming suitability for under-hood and chassis-mounted automotive modules such as body control units and ADAS sensors. The P6SMB15AHM3_A/H meets these requirements without derating at 150 °C junction temperature.
How does the SMB (DO-214AA) package of P6SMB15AHM3_A/H compare to SMC or SMA packages?
The SMB (DO-214AA) package of P6SMB15AHM3_A/H measures 3.94 mm × 2.20 mm × 1.52 mm - smaller than SMC (DO-214AB) and comparable to SMA (DO-214AC), enabling higher board density in automotive ECUs and portable industrial controllers. Unlike larger packages, SMB maintains 600 W pulse capability while supporting MSL Level 1 reflow (260 °C peak). The P6SMB15AHM3_A/H uses the same thermal pad layout as standard SMB footprints, requiring no redesign when replacing legacy SMB TVS devices.
What is the reverse leakage current specification for P6SMB15AHM3_A/H at its stand-off voltage?
P6SMB15AHM3_A/H exhibits a maximum reverse leakage current (ID) of 1.0 μA at its stand-off voltage (VWM) of 12.8 V, measured at 25 °C. This ultra-low leakage minimizes standby power loss and avoids loading effects on high-impedance sensor signal paths or precision voltage references. In practice, this allows the P6SMB15AHM3_A/H to be used directly on analog front-end inputs or low-power MCU wake-up lines without introducing measurement error or battery drain - a key advantage over higher-leakage alternatives.
Can P6SMB15AHM3_A/H replace bidirectional TVS diodes in circuit designs?
No - P6SMB15AHM3_A/H is strictly unidirectional, with polarity marked by a cathode band. It conducts only during reverse overvoltage events and blocks forward current like a standard diode. Bidirectional protection (e.g., for AC lines or differential data buses) requires a CA-suffixed part such as P6SMB15CA. Using P6SMB15AHM3_A/H in place of a bidirectional device would leave the circuit unprotected during positive-going transients on the anode side. Always verify polarity alignment and transient directionality before substituting the P6SMB15AHM3_A/H.
P6SMB15AHM3_A/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- P6SMB, TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
P6SMB15AHM3_A/H FAQ
1.How can I place an order for P6SMB15AHM3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB15AHM3_A/H 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 P6SMB15AHM3_A/H reliable?
The price and inventory of P6SMB15AHM3_A/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB15AHM3_A/H is usually 5 days.
3.What payment methods are accepted for P6SMB15AHM3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB15AHM3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB15AHM3_A/H?
P6SMB15AHM3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB15AHM3_A/H 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 P6SMB15AHM3_A/H?
For technical support, including P6SMB15AHM3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB15AHM3_A/H requirements.
6.How does Aetrix verify that P6SMB15AHM3_A/H is sourced from the original manufacturer or authorized distributors?
All P6SMB15AHM3_A/H 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 P6SMB15AHM3_A/H meets industry standards.
7.What is the process for return or replacement of P6SMB15AHM3_A/H?
All P6SMB15AHM3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB15AHM3_A/H, 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 P6SMB15AHM3_A/H part is unused and in its original packaging.
Return procedure for P6SMB15AHM3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB15AHM3_A/H Tags
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