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Vishay General Semiconductor - Diodes Division P6SMB43AHM3/I
- Part No.:
- P6SMB43AHM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB43AHM3/I.pdf
- Description:
- TVS DIODE 36.8VWM 59.3VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:8,043
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Product details
Overview
P6SMB43AHM3/I from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the SMB (DO-214AA) package, designed for clamping voltage transients on power and signal lines. It features a 36.8 V stand-off voltage (VWM), 40.9–45.2 V breakdown voltage (VBR) at 1 mA test current, and clamps to ≤59.3 V at 10.1 A peak pulse current under 10/1000 µs waveform - suitable for protecting MOSFETs, ICs, and sensor interfaces in industrial power supplies.
For engineers reviewing the P6SMB43AHM3/I datasheet, P6SMB43AHM3/I pinout, P6SMB43AHM3/I application, or P6SMB43AHM3/I equivalent, this part delivers verified 600 W peak pulse power, AEC-Q101 qualification (HM3 suffix), halogen-free RoHS compliance, and MSL Level 1 moisture sensitivity - critical for automotive-grade ESD/surge protection in high-reliability embedded systems.
Technical Context
The P6SMB43AHM3/I operates as a unidirectional avalanche diode with glass-passivated junction, enabling fast response (<1 ns) to transient overvoltage events. Its clamping behavior is defined by a low incremental surge resistance and stable thermal performance up to +150 °C junction temperature.
It is rated for 600 W peak pulse power (10/1000 µs), 5.0 W steady-state power dissipation, and 100 A non-repetitive forward surge current (8.3 ms half-sine). The device uses standard SMB mounting pad layout (0.2" × 0.2" copper pads) and exhibits a VBR temperature coefficient of +0.101 %/°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 36.8 V - maximum continuous reverse voltage before conduction begins; defines operating margin below clamping threshold |
| VBR (Breakdown) | 40.9–45.2 V at 1 mA - guaranteed avalanche initiation range; ensures predictable turn-on during transients |
| VC (Clamping) | ≤59.3 V at 10.1 A (10/1000 µs) - peak voltage seen by protected circuit during worst-case surge |
| PPPM | 600 W - peak transient energy absorption capability without failure under standardized surge waveform |
| IPPM | 10.1 A - maximum non-repetitive surge current the device safely clamps at rated VC |
| TJ max | +150 °C - maximum junction temperature; supports operation in under-hood automotive and industrial environments |
| Package | SMB (DO-214AA) - industry-standard surface-mount outline with 0.220" × 0.130" footprint and matte tin-plated leads |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case meeting UL 94 V-0 flammability rating; terminals are matte tin plated, solderable per J-STD-002 and JESD 22-B102; polarity indicated by cathode band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal (reverse-biased operation) | Connected to protected line side; conducts during positive transients when cathode is at higher potential |
| Cathode | Current exit terminal (reverse-biased operation) | Marked with band; tied to ground or lower-potential rail; defines unidirectional clamping direction |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units and ADAS sensor interfaces |
| Halogen-free & RoHS-compliant | Meets environmental compliance requirements for modern industrial and automotive PCB assembly |
| 600 W peak pulse power (10/1000 µs) | Robust surge handling for IEC 61000-4-5 Level 3/4 and ISO 7637-2 Pulse 1/2a/5a |
| MSL Level 1 (260 °C peak reflow) | Compatible with standard lead-free SMT reflow profiles without preconditioning |
| Glass passivated junction | Ensures long-term reliability and stable leakage characteristics across temperature and humidity |
Applications
| Automotive Power Supply Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: Protecting 12 V/24 V power rails in body control modules against load dump and alternator transients. IC Role / Device Role / Timing Role: Unidirectional TVS clamping device placed between input rail and ground to limit voltage excursions. Use Value: Clamps to ≤59.3 V during 10.1 A surges, safeguarding downstream DC-DC converters and microcontrollers rated for 40 V absolute max. |
Use Scenario: Shielding analog output lines (e.g., 4–20 mA current loops) in pressure/temperature sensors from ESD and cable discharge events. IC Role / Device Role / Timing Role: Standoff-mode protector on signal line with low leakage (<1 µA at 36.8 V) preserving measurement accuracy. Use Value: Fast <1 ns response prevents latch-up in precision op-amps and ADC front-ends while maintaining signal integrity. |
| Telecom Line Card Surge Protection | Consumer Power Adapter Input Stage |
|
Use Scenario: Front-end transient suppression on AC/DC adapter inputs exposed to lightning-induced surges in outdoor telecom cabinets. IC Role / Device Role / Timing Role: Primary clamping element after bridge rectifier, absorbing repetitive 600 W pulses per IEC 61000-4-5. Use Value: Withstands ≥1000 surges at rated conditions due to low thermal resistance (RθJL = 20 °C/W) and robust junction construction. |
Use Scenario: Secondary-side overvoltage clamp on USB-C PD power delivery circuits to prevent damage during fault conditions. IC Role / Device Role / Timing Role: Fast-acting unidirectional suppressor on 20 V output rail, triggered only during abnormal overvoltage events. Use Value: 36.8 V VWM provides 3.2 V margin above nominal 33 V OVP threshold, avoiding false triggering during normal regulation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ43A-E3/5B | Same VWM/VBR/VC specs but SMA package (smaller footprint, lower PPPM = 400 W) | Limited to lower-energy transients; not rated for AEC-Q101 or MSL Level 1 | Select when board space is constrained and surge threat level is ≤400 W (e.g., consumer USB ports) |
| 1.5SMC43AHE3/A | Same electrical specs but SMC package (larger, higher PPPM = 1500 W); AEC-Q101 qualified, HM3 suffix variant available | Higher thermal mass supports repeated surges in motor drive inverters; requires larger PCB area | Choose for high-reliability industrial drives where 1500 W headroom and >150 °C TJ margin are required |
Compared with SMAJ43A-E3/5B, P6SMB43AHM3/I offers 50 % higher peak power and automotive qualification; versus 1.5SMC43AHE3/A, it reduces PCB area by ~40 % while retaining AEC-Q101 compliance and sufficient clamping for most 12 V/24 V subsystems.
Availability
P6SMB43AHM3/I is available at Aetrix Electronics and suitable for automotive ECUs, industrial sensor nodes, telecom line cards, and consumer power adapters requiring stable component supply with full traceability and lifecycle management.
Supply support for P6SMB43AHM3/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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and automotive-grade validation.
The P6SMB series targets high-volume transient suppression in automotive, industrial, and telecom applications - engineered for robustness under harsh thermal, mechanical, and electrical stress conditions.
FAQ
What is the maximum clamping voltage of P6SMB43AHM3/I under standard test conditions?
The P6SMB43AHM3/I has a maximum clamping voltage (VC) of 59.3 V when subjected to a 10/1000 µs waveform at 10.1 A peak pulse current. This value is measured per JEDEC standards and reflects the highest voltage the protected circuit will experience during a defined transient event. The P6SMB43AHM3/I maintains this clamping performance across its specified operating temperature range and is validated per AEC-Q101 stress testing protocols.
Is P6SMB43AHM3/I suitable for automotive applications?
Yes, P6SMB43AHM3/I is AEC-Q101 qualified and carries the HM3 suffix indicating halogen-free, RoHS-compliant, and automotive-grade construction. It is specifically intended for use in automotive subsystems such as body electronics, infotainment power rails, and sensor interfaces where reliability under temperature cycling, vibration, and surge stress is mandatory. The P6SMB43AHM3/I meets MSL Level 1 and supports lead-free reflow up to 260 °C.
What does the "I" suffix in P6SMB43AHM3/I indicate?
The "I" suffix in P6SMB43AHM3/I denotes packaging in 13-inch diameter plastic tape and reel, with a standard quantity of 3200 units per reel. This format is optimized for high-volume automated SMT placement and aligns with IPC-7351 land pattern recommendations for the SMB (DO-214AA) package. The base HM3 designation confirms halogen-free, RoHS-compliant, and AEC-Q101-qualified construction independent of reel size.
How does P6SMB43AHM3/I compare to bidirectional TVS diodes like P6SMB43CA?
P6SMB43AHM3/I is unidirectional and features a cathode band for polarity-sensitive placement, whereas P6SMB43CA is bidirectional with no polarity marking and symmetrical clamping in both directions. The P6SMB43AHM3/I offers tighter VBR tolerance (40.9–45.2 V vs. ±5 % for CA variants) and is preferred for DC power rail protection where directionality improves leakage control. Bidirectional versions suit AC-coupled signal lines or floating buses.
What is the thermal resistance of P6SMB43AHM3/I, and how does it affect layout design?
The P6SMB43AHM3/I has a typical junction-to-lead thermal resistance (RθJL) of 20 °C/W and junction-to-ambient (RθJA) of 100 °C/W when mounted on 0.2" × 0.2" copper pads. To maintain safe junction temperatures during repetitive surges, PCB layout must provide adequate copper area per terminal and avoid thermal bottlenecks. The P6SMB43AHM3/I's low RθJL enables efficient heat transfer to the PCB, supporting sustained operation in compact enclosures.
P6SMB43AHM3/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:
- Discontinued at Digi-Key
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 36.8V
- Voltage - Breakdown (Min):
- 40.9V
- Voltage - Clamping (Max) @ Ipp:
- 59.3V
- Current - Peak Pulse (10/1000µs):
- 10.1A
- 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)
P6SMB43AHM3/I FAQ
1.How can I place an order for P6SMB43AHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB43AHM3/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 P6SMB43AHM3/I reliable?
The price and inventory of P6SMB43AHM3/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB43AHM3/I is usually 5 days.
3.What payment methods are accepted for P6SMB43AHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB43AHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB43AHM3/I?
P6SMB43AHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB43AHM3/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 P6SMB43AHM3/I?
For technical support, including P6SMB43AHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB43AHM3/I requirements.
6.How does Aetrix verify that P6SMB43AHM3/I is sourced from the original manufacturer or authorized distributors?
All P6SMB43AHM3/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 P6SMB43AHM3/I meets industry standards.
7.What is the process for return or replacement of P6SMB43AHM3/I?
All P6SMB43AHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB43AHM3/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 P6SMB43AHM3/I part is unused and in its original packaging.
Return procedure for P6SMB43AHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB43AHM3/I Tags
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ESD9B5.0ST5G
onsemi
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DESD3V3E1BL-7B
Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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ESD5Z5.0T1G
onsemi
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DESD5V0U1BB-7
Diodes Incorporated
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D12V0L1B2LP-7B
Diodes Incorporated
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Nexperia USA Inc.
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DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
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Diodes Incorporated
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