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Vishay General Semiconductor - Diodes Division P6SMB47AHM3_B/H
- Part No.:
- P6SMB47AHM3_B/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB47AHM3_B/H.pdf
- Description:
- 600W,47V 5%,UNIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:2,991
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Product details
Overview
P6SMB47AHM3_B/H from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, rated for 47 V standoff voltage (VWM = 40.2 V), 64.8 V clamping voltage at 9.3 A peak pulse current (10/1000 μs), and 600 W peak pulse power. It provides robust ESD and surge protection for DC power rails and signal lines in automotive and industrial control modules.
For engineers reviewing the P6SMB47AHM3_B/H datasheet, P6SMB47AHM3_B/H pinout, P6SMB47AHM3_B/H application, or P6SMB47AHM3_B/H equivalent, this AEC-Q101 qualified TVS diode delivers verified clamping performance, low leakage (<1 μA at VWM), and MSL Level 1 moisture sensitivity - critical for high-reliability automotive electronics design and production validation.
Technical Context
This device operates as a unidirectional avalanche diode with glass-passivated junction, enabling sub-nanosecond response to transients. Its 600 W peak pulse rating (10/1000 μs) and 150 °C maximum junction temperature support sustained surge handling in harsh environments.
Designed for automated SMT assembly, it features matte tin-plated leads compliant with J-STD-002 and JESD 22-B102, and meets UL 94 V-0 flammability requirements. The cathode band marking identifies polarity, and thermal resistance is specified at RθJA = 100 °C/W (typ.) on standard 0.2" × 0.2" copper pads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 40.2 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR (Breakdown) | 44.7–49.4 V at 1 mA - Confirmed avalanche onset range under standardized test conditions |
| VC (Clamping) | 64.8 V at IPPM = 9.3 A (10/1000 μs) - Measured voltage limiting during worst-case surge event |
| PPPM | 600 W - Peak transient power dissipation capability without failure |
| ID (Leakage) | <1 μA at VWM - Minimal standby current draw preserving system efficiency |
| TJ max. | +150 °C - Enables operation in under-hood automotive and industrial ambient environments |
| Package | SMB (DO-214AA) - Industry-standard 2-pin surface-mount outline with 5.59 mm × 4.06 mm footprint |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case with matte tin-plated leads; cathode identified by black band on body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side of protected circuit (e.g., GND or return path) |
| Cathode | Avalanche clamping terminal | Connected to higher-potential side (e.g., +12 V rail); band-marked end defines polarity |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per JESD22 standards |
| 600 W peak pulse power | Withstands repeated 10/1000 μs surges up to 9.3 A without degradation when mounted per recommended pad layout |
| Low clamping ratio (VC/VBR ≈ 1.38) | Ensures tight voltage margin between breakdown and clamping - critical for protecting 48 V system ICs with 70 V abs max ratings |
| MSL Level 1 (260 °C peak) | Compatible with standard lead-free reflow profiles without preconditioning or dry-pack requirements |
| Glass-passivated junction | Provides stable, repeatable avalanche characteristics over lifetime and temperature extremes (−65 °C to +150 °C) |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC Digital Input Card |
|---|---|
Use Scenario: Protects microcontroller GPIO and CAN transceiver power pins from load dump and inductive switching spikes in 12 V/24 V vehicle subsystems. IC Role / Device Role / Timing Role: Unidirectional TVS placed between VCC and GND, clamping transients within 1 ns to prevent latch-up or gate oxide damage. Use Value: Withstands ISO 7637-2 Pulse 5a (load dump) up to 60 V and ensures >100,000 surge cycles per AEC-Q101 stress profile. |
Use Scenario: Shields 24 V DC digital input circuits from field-wiring induced surges in factory automation cabinets. IC Role / Device Role / Timing Role: Standoff-rated TVS on input line prior to optocoupler or Schmitt trigger, absorbing fast-rising transients before signal conditioning. Use Value: Limits voltage to ≤64.8 V during 1 kV/500 A surge events, preventing false triggering and extending optocoupler lifetime. |
| Telecom Power Supply Front-End | Consumer Appliance Motor Drive Board |
Use Scenario: Guards primary-side DC bus (e.g., 48 V telecom rectifier output) against lightning-induced surges entering via AC mains or Ethernet ports. IC Role / Device Role / Timing Role: First-line unidirectional clamp on bulk capacitor rail, diverting energy before downstream DC/DC converters. Use Value: 600 W rating handles IEC 61000-4-5 Combination Wave (1.2/50 μs + 8/20 μs) surges without thermal runaway. |
Use Scenario: Safeguards MCU supply pins and H-bridge gate drivers from back-EMF spikes generated by brushed DC motors in washing machines or HVAC blowers. IC Role / Device Role / Timing Role: Localized TVS on motor driver VDD rail, placed adjacent to gate driver IC to minimize loop inductance. Use Value: Sub-ns response time prevents voltage overshoot exceeding 65 V, avoiding MOSFET avalanche failure during commutation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ47A-E3/52 | Same VWM (40.2 V), but lower PPPM = 400 W; SMA package (smaller footprint, higher RθJA) | Lower surge margin; suitable only for non-automotive consumer applications with derated surge exposure | Select when board space is constrained and surge threat level is limited to IEC 61000-4-2 Level 4 (±15 kV contact) |
| 1.5SMC47A | Same electrical specs, but larger SMC (DO-214AB) package; RθJA = 65 °C/W (better thermal performance) | Requires larger PCB area; preferred for high-duty-cycle or high-ambient-temperature deployments | Choose for industrial power supplies where thermal management is prioritized over miniaturization |
Compared with SMAJ47A-E3/52, P6SMB47AHM3_B/H offers 50 % higher surge power headroom and AEC-Q101 qualification; versus 1.5SMC47A, it trades thermal margin for compact SMB footprint while maintaining identical clamping and leakage behavior.
Availability
P6SMB47AHM3_B/H is available at Aetrix Electronics and suitable for automotive body electronics, industrial programmable logic controllers, and telecom power systems requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for P6SMB47AHM3_B/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 is engineered for high-energy transient suppression in automotive, industrial, and telecom infrastructure - delivering consistent clamping, AEC-Q101 compliance, and robust SMT manufacturability.
FAQ
What is the maximum clamping voltage of P6SMB47AHM3_B/H under standard test conditions?
The maximum clamping voltage of P6SMB47AHM3_B/H is 64.8 V, measured at a peak pulse current (IPPM) of 9.3 A using the industry-standard 10/1000 μs double-exponential waveform. This value is guaranteed across the full operating temperature range and reflects the actual voltage seen by protected circuitry during surge events.
Is P6SMB47AHM3_B/H qualified for automotive applications?
Yes, P6SMB47AHM3_B/H is AEC-Q101 qualified, as indicated by the "HM3_B" suffix per Vishay's ordering nomenclature. It has passed stress tests including temperature cycling, high-temperature reverse bias (HTRB), and ESD per JESD22 standards, making it suitable for under-hood and chassis-mounted automotive electronics.
What does the "_B/H" suffix mean in P6SMB47AHM3_B/H?
The "_B" denotes AEC-Q101 qualification for the P6SMB47A base device, and "/H" specifies packaging in 7" diameter plastic tape and reel with 750 units per reel. This ordering code aligns with Vishay's documented nomenclature in the P6SMB datasheet revision 09-Jan-2024, section "Ordering Information".
Can P6SMB47AHM3_B/H be used in bidirectional configurations?
No, P6SMB47AHM3_B/H is a unidirectional TVS diode, as confirmed by its part number ending in "A" (not "CA") and its cathode band marking. Bidirectional variants use the "CA" suffix (e.g., P6SMB47CA), and their electrical characteristics differ - particularly in leakage and symmetry - making them non-interchangeable.
What is the thermal resistance of P6SMB47AHM3_B/H, and how does it affect layout?
P6SMB47AHM3_B/H 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. To maintain safe junction temperatures under repetitive surge conditions, PCB layout must adhere to this minimum pad size and avoid excessive trace length or isolation that increases thermal impedance.
P6SMB47AHM3_B/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- P6SMB, TransZorb®
- Packaging:
- Bulk
- 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/H FAQ
1.How can I place an order for P6SMB47AHM3_B/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB47AHM3_B/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 P6SMB47AHM3_B/H reliable?
The price and inventory of P6SMB47AHM3_B/H 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/H is usually 5 days.
3.What payment methods are accepted for P6SMB47AHM3_B/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB47AHM3_B/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB47AHM3_B/H?
P6SMB47AHM3_B/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB47AHM3_B/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 P6SMB47AHM3_B/H?
For technical support, including P6SMB47AHM3_B/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB47AHM3_B/H requirements.
6.How does Aetrix verify that P6SMB47AHM3_B/H is sourced from the original manufacturer or authorized distributors?
All P6SMB47AHM3_B/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 P6SMB47AHM3_B/H meets industry standards.
7.What is the process for return or replacement of P6SMB47AHM3_B/H?
All P6SMB47AHM3_B/H units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB47AHM3_B/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 P6SMB47AHM3_B/H part is unused and in its original packaging.
Return procedure for P6SMB47AHM3_B/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB47AHM3_B/H Tags
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