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Vishay General Semiconductor - Diodes Division P6SMB39AHM3_B/I
- Part No.:
- P6SMB39AHM3_B/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB39AHM3_B/I.pdf
- Description:
- 600W,39V 5%,UNIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:4,372
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Product details
Overview
P6SMB39AHM3_B/I from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, with 39 V breakdown voltage (VBR = 37.1–41.0 V at IT = 1.0 mA), 33.3 V stand-off voltage (VWM), and 53.9 V maximum clamping voltage (VC) at 11.1 A peak pulse current (IPPM). It delivers 600 W peak pulse power (10/1000 μs waveform) for protecting MOSFETs, ICs, and sensor signal lines against inductive switching transients in automotive and industrial electronics.
For engineers reviewing the P6SMB39AHM3_B/I datasheet, P6SMB39AHM3_B/I pinout, P6SMB39AHM3_B/I application, or P6SMB39AHM3_B/I equivalent, this AEC-Q101 qualified, halogen-free, RoHS-compliant TVS diode supports high-reliability designs requiring stable clamping performance, low incremental surge resistance, and MSL Level 1 moisture sensitivity rating up to 260 °C reflow peak temperature.
Technical Context
The P6SMB39AHM3_B/I operates as a unidirectional avalanche diode, leveraging glass-passivated junction technology for fast response (<1 ns) and repeatable transient suppression. Its clamping behavior is defined by a 10/1000 μs double-exponential pulse 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.
Designed for automated SMT placement, it features matte tin-plated leads compliant with J-STD-002 and JESD 22-B102, and meets JESD 201 Class 2 whisker resistance. The cathode band identifies polarity, and its 150 °C maximum junction temperature enables operation in under-hood automotive environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 37.1 V / 41.0 V at 1.0 mA test current - defines reliable avalanche initiation threshold under DC bias |
| VWM | 33.3 V - maximum continuous reverse operating voltage before leakage exceeds 1.0 μA |
| VC @ IPPM | 53.9 V at 11.1 A - clamping voltage during 600 W transient, limiting downstream device stress |
| PPPM | 600 W (10/1000 μs) - peak surge power handling capability with 0.01% duty cycle |
| IFSM | 100 A (8.3 ms half-sine) - surge current rating for unidirectional forward conduction events |
| TJ max | +150 °C - enables use in high-temperature automotive and industrial enclosures without derating |
| Package | SMB (DO-214AA) - standardized 2-pin surface-mount outline with 0.220" × 0.130" footprint and MSL Level 1 rating |
Pinout & Package
SMB (DO-214AA) package: 2-terminal surface-mount device with cathode band marking; case dimensions 4.57 mm × 3.94 mm × 2.20 mm (L × W × H); terminals are matte tin-plated for solderability per J-STD-002.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / reverse voltage reference node | Connected to system ground or lower-potential rail in unidirectional protection configuration |
| Cathode | Avalanche conduction terminal / protected line connection | Connected to the signal or power line requiring transient suppression; marked with band |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive applications including engine control units and ADAS sensor interfaces |
| 600 W peak pulse power | Withstands high-energy transients from relay coil de-energization or motor commutation |
| Glass-passivated junction | Ensures stable VBR over time and temperature, minimizing parameter drift in harsh environments |
| MSL Level 1 (260 °C) | Supports lead-free reflow without preconditioning, compatible with standard SMT assembly lines |
| Halogen-free & RoHS-compliant | Fulfills environmental compliance requirements for EU, China, and global OEM supply chains |
Applications
| Automotive Power Line Protection | Industrial Sensor Signal Conditioning |
|---|---|
|
Use Scenario: Protecting 12 V battery-fed ECUs from load-dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and ground to clamp surges before they reach LDOs or microcontrollers. Use Value: Clamps transients to ≤53.9 V at 11.1 A, preventing damage to 3.3 V/5 V logic while surviving 100 A surge currents. |
Use Scenario: Shielding analog output lines of pressure or temperature sensors in factory automation PLCs. IC Role / Device Role / Timing Role: Low-capacitance TVS on 4–20 mA or 0–10 V signal paths to suppress ESD and field-induced noise. Use Value: Sub-1 ns response ensures transient energy is shunted before reaching precision ADC front-ends, preserving measurement integrity. |
| Consumer Power Adapter Input Stage | Telecom DC Power Feeds |
|
Use Scenario: Secondary-side overvoltage protection in AC/DC adapters powering USB-C PD devices. IC Role / Device Role / Timing Role: Standoff-rated TVS across regulated 5 V/9 V/15 V outputs to absorb capacitor discharge spikes during hot-plug events. Use Value: 33.3 V VWM allows normal operation while clamping fault conditions to safe levels below IC absolute maximum ratings. |
Use Scenario: Surge protection on -48 V DC telecom power distribution boards feeding remote radio units. IC Role / Device Role / Timing Role: Unidirectional TVS connected anode-to-ground on negative-rail feeds to handle positive-going transients. Use Value: 600 W rating handles lightning-induced surges per IEC 61000-4-5 Level 4, maintaining uptime in outdoor base station deployments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ39A-E3/5B | Same VBR range (37.1–41.0 V), but SMA package (smaller footprint, higher RθJA = 140 °C/W) | Limited to lower-power or space-constrained PCBs where thermal margin is less critical | Select when board area is constrained and peak pulse duty cycle remains <0.01% |
| 1.5SMC39AHE3_A/H | Same electrical specs, but SMC (DO-214AB) package - larger body, lower RθJA = 75 °C/W, higher IPPM = 12.3 A | Better suited for high-thermal-load industrial motor drives with frequent surge events | Choose for improved thermal robustness in high-ambient-temperature environments (>85 °C) |
Compared with P6SMB39AHM3_B/I, SMAJ39A-E3/5B offers smaller size but reduced thermal performance, while 1.5SMC39AHE3_A/H provides superior heat dissipation and higher surge current tolerance at the cost of increased PCB area - making P6SMB39AHM3_B/I the balanced choice for AEC-Q101 automotive modules with strict footprint and reliability requirements.
Availability
P6SMB39AHM3_B/I is available at Aetrix Electronics and suitable for automotive control units, industrial sensor interfaces, consumer power adapters, and telecom DC power feeds requiring stable component supply, AEC-Q101 qualification, and halogen-free compliance.
Supply support for P6SMB39AHM3_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, TVS devices, and optoelectronics with emphasis on reliability, efficiency, and application-specific optimization.
The P6SMB Series targets high-volume, high-reliability transient suppression in automotive, industrial, and communications systems - engineered for robust surge handling, automated assembly compatibility, and long-term parametric stability under thermal cycling.
FAQ
What is the clamping voltage of P6SMB39AHM3_B/I at its rated peak pulse current?
The P6SMB39AHM3_B/I has a maximum clamping voltage (VC) of 53.9 V at 11.1 A peak pulse current (IPPM) under a 10/1000 μs waveform. This value is measured per standard test conditions (TA = 25 °C, mounted on 0.2" × 0.2" copper pads) and defines the upper voltage limit imposed on protected circuitry during transient events. The P6SMB39AHM3_B/I maintains this clamping performance across its specified operating temperature range.
Is P6SMB39AHM3_B/I qualified for automotive applications?
Yes, P6SMB39AHM3_B/I is AEC-Q101 qualified, as indicated by the "HM3_B" suffix per Vishay's ordering nomenclature. It meets the stress test requirements for automotive-grade discrete semiconductors, including temperature cycling, humidity bias, and mechanical shock. This qualification makes P6SMB39AHM3_B/I suitable for use in engine control modules, body electronics, and ADAS sensor interfaces where reliability under harsh conditions is mandatory.
What does the "_B/I" suffix mean in P6SMB39AHM3_B/I?
The "_B" denotes AEC-Q101 qualification for the P6SMB39A variant (applicable to VWM ≤ 220 V), and "/I" specifies packaging in 13-inch diameter plastic tape and reel with 3200 units per reel. This format aligns with Vishay's standard ordering convention and ensures traceability, moisture-sensitive level compliance (MSL Level 1), and compatibility with high-speed pick-and-place equipment used in automotive electronics manufacturing.
How does the thermal performance of P6SMB39AHM3_B/I compare to larger-package TVS diodes?
P6SMB39AHM3_B/I has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 0.2" × 0.2" copper pads. This is higher than SMC-packaged equivalents like 1.5SMC39AHE3_A/H (RθJA = 75 °C/W), meaning P6SMB39AHM3_B/I requires more careful thermal layout in high-duty-cycle applications. However, its SMB footprint offers better board-space efficiency, and its 150 °C TJmax ensures operational safety within automotive under-hood ambient limits.
Can P6SMB39AHM3_B/I be used in bidirectional configurations?
No, P6SMB39AHM3_B/I is a unidirectional TVS diode, as confirmed by its part number suffix "A" (not "CA") and the presence of a cathode band marking. Bidirectional operation requires the "CA" variant (e.g., P6SMB39CA). Using P6SMB39AHM3_B/I in reverse-biased configurations will result in forward conduction rather than symmetrical clamping - therefore, P6SMB39AHM3_B/I must be oriented with cathode toward the protected line and anode to ground in all applications.
P6SMB39AHM3_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):
- 33.3V
- Voltage - Breakdown (Min):
- 37.1V
- Voltage - Clamping (Max) @ Ipp:
- 53.9V
- Current - Peak Pulse (10/1000µs):
- 11.1A
- 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)
P6SMB39AHM3_B/I FAQ
1.How can I place an order for P6SMB39AHM3_B/I through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB39AHM3_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 P6SMB39AHM3_B/I reliable?
The price and inventory of P6SMB39AHM3_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 P6SMB39AHM3_B/I is usually 5 days.
3.What payment methods are accepted for P6SMB39AHM3_B/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB39AHM3_B/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB39AHM3_B/I?
P6SMB39AHM3_B/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB39AHM3_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 P6SMB39AHM3_B/I?
For technical support, including P6SMB39AHM3_B/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB39AHM3_B/I requirements.
6.How does Aetrix verify that P6SMB39AHM3_B/I is sourced from the original manufacturer or authorized distributors?
All P6SMB39AHM3_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 P6SMB39AHM3_B/I meets industry standards.
7.What is the process for return or replacement of P6SMB39AHM3_B/I?
All P6SMB39AHM3_B/I units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB39AHM3_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 P6SMB39AHM3_B/I part is unused and in its original packaging.
Return procedure for P6SMB39AHM3_B/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB39AHM3_B/I Tags
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