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Vishay General Semiconductor - Diodes Division P6SMB47AHM3_B/I
- Part No.:
- P6SMB47AHM3_B/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB47AHM3_B/I.pdf
- Description:
- 600W,47V 5%,UNIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:9,201
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Product details
Overview
P6SMB47AHM3_B/I from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, rated for 47 V breakdown voltage (VBR = 44.7–49.4 V at 1 mA), 600 W peak pulse power (10/1000 µs), and 64.8 V maximum clamping voltage (VC) at 9.3 A peak pulse current - deployed for overvoltage protection of MOSFETs, ICs, and sensor signal lines in automotive and industrial power supplies.
For engineers reviewing the P6SMB47AHM3_B/I datasheet, P6SMB47AHM3_B/I pinout, P6SMB47AHM3_B/I application, or P6SMB47AHM3_B/I equivalent, this AEC-Q101 qualified TVS offers verified bidirectional-capable variants, low incremental surge resistance, and MSL Level 1 reflow compatibility up to 260 °C - critical for high-reliability automotive ECUs and industrial motor controllers requiring robust ESD and load-dump immunity.
Technical Context
This device operates as a unidirectional avalanche diode with cathode-band polarity marking, leveraging glass-passivated junction technology for stable breakdown and fast response (<1 ns). Its clamping behavior is defined by a 10/1000 µs double-exponential waveform, with thermal derating above 25 °C per Fig. 2 and junction-to-ambient thermal resistance of 100 °C/W on standard 0.2" × 0.2" copper pads.
The P6SMB47AHM3_B/I features a stand-off voltage (VWM) of 40.2 V, reverse leakage current ≤1.0 µA at VWM, and a temperature coefficient of VBR of +0.101 %/°C - enabling predictable voltage margining across -65 °C to +150 °C operating range. It meets JESD201 Class 2 whisker resistance and UL 94 V-0 flammability requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage VBR | 44.7–49.4 V at 1 mA - defines precise avalanche initiation threshold for repeatable overvoltage triggering |
| Stand-off Voltage VWM | 40.2 V - maximum continuous reverse voltage before significant leakage, ensuring no false triggering in normal operation |
| Clamping Voltage VC | 64.8 V at 9.3 A IPPM - limits transient voltage seen by protected downstream circuitry during 10/1000 µs surges |
| Peak Pulse Power PPPM | 600 W (10/1000 µs) - sustains high-energy transients without failure, validated under repetitive 0.01% duty cycle |
| Operating Temperature | -65 °C to +150 °C - supports under-hood automotive and wide-temperature industrial environments |
| AEC-Q101 Qualified | Yes - certified for automotive electronics per stress test requirements including HTOL, TC, and HAST |
| Package | SMB (DO-214AA) - surface-mount footprint compatible with automated placement and reflow soldering (MSL Level 1, 260 °C peak) |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case with matte tin-plated leads; dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H); polarity indicated by cathode band on one end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side connection in unidirectional configuration | Connected to ground or low-impedance return path; conducts during reverse-biased transient suppression |
| Cathode | High-side connection with polarity marking | Connected to protected line (e.g., 48 V rail or sensor input); blocks normal operation, avalanches during overvoltage |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power rating | Enables robust protection against ISO 7637-2 Load Dump (Test Pulse 5a) and IEC 61000-4-5 surges in 12/24 V systems |
| AEC-Q101 qualification (HM3_B suffix) | Validates reliability for automotive powertrain and body electronics with zero early-life failures under accelerated stress |
| Glass passivated junction | Ensures stable VBR tolerance and low leakage drift over temperature and lifetime vs. epoxy-passivated alternatives |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and single-reflow processing without baking, reducing manufacturing cost and risk |
| UL 94 V-0 flammability rating | Meets safety standards for enclosed industrial and automotive enclosures where flame propagation must be prevented |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC Analog Input Protection |
|---|---|
Use Scenario: Protects microcontroller GPIO and LIN bus transceivers from load dump and jump-start transients in 12 V vehicle electrical systems. IC Role / Device Role / Timing Role: Unidirectional TVS placed between supply rail and ground, clamping spikes within 1 ns to limit voltage to <65 V. Use Value: Prevents latch-up or permanent damage to 5 V/3.3 V logic interfaces while maintaining system uptime during battery disconnection/reconnection events. |
Use Scenario: Shields 4–20 mA current-loop sensor inputs from field wiring-induced surges in factory automation cabinets. IC Role / Device Role / Timing Role: Standoff-rated TVS connected across input terminals, absorbing >600 W energy without degradation over 10⁵ surge cycles. Use Value: Eliminates need for external series resistors or gas discharge tubes, reducing BOM count and PCB area while meeting IEC 61000-4-4 Level 4 immunity. |
| Telecom Power Supply DC Output | Motor Drive Gate Driver Protection |
Use Scenario: Safeguards isolated DC/DC converter outputs feeding sensitive RF front-end modules in base station equipment. IC Role / Device Role / Timing Role: Secondary-side TVS on +48 V output rail, triggered only during lightning-induced common-mode transients. Use Value: Maintains output regulation integrity by limiting overshoot to <65 V, preventing burnout of downstream LDOs and PMICs. |
Use Scenario: Clamps Miller-induced voltage spikes across high-side gate driver outputs in 3-phase inverter half-bridges. IC Role / Device Role / Timing Role: Fast-response TVS placed between gate and source of SiC MOSFETs, suppressing dv/dt-induced false turn-on. Use Value: Reduces gate oxide stress and improves inverter reliability without adding gate resistance that degrades switching speed. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ47A-E3/5B | Same VBR range (44.7–49.4 V), but 400 W PPPM rating and SMA package (smaller footprint, higher RθJA = 140 °C/W) | Lower power handling limits use to sub-5 A surge environments; not AEC-Q101 qualified | Select when space-constrained layouts prioritize size over automotive qualification and 600 W surge margin |
| 1.5SMC47A | Same electrical specs but SMC (DO-214AB) package - 7.11 mm × 6.22 mm, 2× larger footprint, RθJA = 60 °C/W | Better thermal performance enables sustained surge duty in high-ambient industrial drives, but requires more PCB area | Choose when thermal management dominates layout constraints and board space permits larger package |
Compared with SMAJ47A-E3/5B, P6SMB47AHM3_B/I delivers 50% higher surge power headroom and automotive qualification; versus 1.5SMC47A, it trades thermal efficiency for compactness and standardized SMB assembly flow - making it optimal for high-volume automotive modules where footprint and process compatibility are critical.
Availability
P6SMB47AHM3_B/I is available at Aetrix Electronics and suitable for automotive electronic control units, industrial programmable logic controllers, telecom power supplies, and motor drive gate driver circuits requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for P6SMB47AHM3_B/I 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, precision, and automotive-grade qualification.
The P6SMB Series was engineered specifically for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where consistent clamping, low leakage, and AEC-Q101 compliance are mandatory.
FAQ
What is the clamping voltage of P6SMB47AHM3_B/I at its rated peak pulse current?
The P6SMB47AHM3_B/I has a maximum clamping voltage (VC) of 64.8 V at 9.3 A peak pulse current (IPPM) under the standard 10/1000 µs waveform. This value ensures protected circuitry remains below critical voltage thresholds during surge events. The clamping performance is guaranteed across the full operating temperature range and is validated per JEDEC test methods. P6SMB47AHM3_B/I maintains this specification with no degradation after repeated surge exposure when mounted per recommended pad layout.
Is P6SMB47AHM3_B/I suitable for automotive applications?
Yes, P6SMB47AHM3_B/I is AEC-Q101 qualified - explicitly certified for automotive use with test evidence covering high-temperature operating life, temperature cycling, and unbiased highly accelerated stress testing. The HM3_B suffix denotes halogen-free, RoHS-compliant construction with AEC-Q101 qualification. P6SMB47AHM3_B/I is deployed in body control modules, ADAS power supplies, and infotainment system protection where reliability under vibration, thermal shock, and extended temperature operation is required.
What does the "_B/I" suffix mean in P6SMB47AHM3_B/I?
The "_B" in P6SMB47AHM3_B/I indicates AEC-Q101 qualification for the P6SMB6.8A–P6SMB220A voltage range, while "_I" specifies packaging in 13-inch diameter plastic tape and reel with 3200 units per reel. The "HM3" portion confirms halogen-free, RoHS-compliant construction. Together, P6SMB47AHM3_B/I identifies a fully automotive-qualified, environmentally compliant, high-volume surface-mount TVS delivered in industry-standard bulk packaging for automated assembly.
How does P6SMB47AHM3_B/I compare to bidirectional versions like P6SMB47CA?
P6SMB47AHM3_B/I is unidirectional and features a cathode band for polarity identification, whereas P6SMB47CA is bidirectional with no polarity marking and symmetric clamping in both directions. The unidirectional P6SMB47AHM3_B/I provides lower leakage (<1.0 µA at VWM) and tighter VBR tolerance than its bidirectional counterpart, making it preferred for DC rail protection. P6SMB47AHM3_B/I cannot replace P6SMB47CA in AC-coupled or floating signal line applications without circuit redesign.
What is the thermal resistance and mounting requirement for P6SMB47AHM3_B/I?
P6SMB47AHM3_B/I 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 - as specified in the datasheet's thermal characteristics table. Deviation from this pad layout increases thermal impedance and reduces surge current capability. For continuous power dissipation, derating curves in Figure 2 must be applied above 25 °C ambient. P6SMB47AHM3_B/I is not intended for sustained DC power dissipation beyond 5.0 W.
P6SMB47AHM3_B/I 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:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 40.2V
- Voltage - Breakdown (Min):
- 44.7V
- Voltage - Clamping (Max) @ Ipp:
- 64.8V
- Current - Peak Pulse (10/1000µs):
- 9.3A
- 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)
P6SMB47AHM3_B/I FAQ
1.How can I place an order for P6SMB47AHM3_B/I through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB47AHM3_B/I 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 P6SMB47AHM3_B/I reliable?
The price and inventory of P6SMB47AHM3_B/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB47AHM3_B/I is usually 5 days.
3.What payment methods are accepted for P6SMB47AHM3_B/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB47AHM3_B/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB47AHM3_B/I?
P6SMB47AHM3_B/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB47AHM3_B/I 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 P6SMB47AHM3_B/I?
For technical support, including P6SMB47AHM3_B/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB47AHM3_B/I requirements.
6.How does Aetrix verify that P6SMB47AHM3_B/I is sourced from the original manufacturer or authorized distributors?
All P6SMB47AHM3_B/I 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 P6SMB47AHM3_B/I meets industry standards.
7.What is the process for return or replacement of P6SMB47AHM3_B/I?
All P6SMB47AHM3_B/I units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB47AHM3_B/I, 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 P6SMB47AHM3_B/I part is unused and in its original packaging.
Return procedure for P6SMB47AHM3_B/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB47AHM3_B/I Tags
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