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Vishay General Semiconductor - Diodes Division P6SMB39AHM3_A/I
- Part No.:
- P6SMB39AHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB39AHM3_A/I.pdf
- Description:
- TVS DIODE 33.3VWM 53.9VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,652
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Product details
Overview
P6SMB39AHM3_A/I from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, rated for 39 V breakdown voltage (VBR = 37.1–41.0 V at IT = 1.0 mA), 53.9 V maximum clamping voltage (VC) at 11.1 A peak pulse current (IPPM), and 600 W peak pulse power (10/1000 µs waveform). It protects MOSFETs, ICs, and sensor signal lines against inductive switching transients and ESD in automotive and industrial power supplies.
For engineers reviewing the P6SMB39AHM3_A/I datasheet, P6SMB39AHM3_A/I pinout, P6SMB39AHM3_A/I application, or P6SMB39AHM3_A/I equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, thermal resistance (RθJA = 100 °C/W), junction temperature range (–65 to +150 °C), and halogen-free RoHS-compliant construction - all confirmed from Vishay's official P6SMB series specification document (88370, Rev. 09-Jan-2024).
Technical Context
This unidirectional TVS diode operates by avalanche breakdown to clamp transient overvoltages above its standoff voltage (VWM = 33.3 V) while maintaining low leakage (<1.0 µA). Its glass-passivated junction ensures stable VBR tolerance (±5%) and fast response time (<1.0 ns), critical for protecting sensitive 3.3 V/5 V logic interfaces and automotive ECUs.
The device is qualified to AEC-Q101, features MSL Level 1 moisture sensitivity, and uses matte tin-plated leads compliant with J-STD-002 and JESD 22-B102. Its SMB package enables automated placement and achieves 600 W surge capability on standard 5.0 mm × 5.0 mm copper pads per terminal - validated under JEDEC-defined 10/1000 µs waveform conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 37.1 V / 41.0 V at IT = 1.0 mA - defines precise avalanche onset threshold for repeatable clamping behavior |
| VWM | 33.3 V - maximum continuous reverse operating voltage before significant leakage begins |
| VC @ IPPM | 53.9 V at 11.1 A - clamped voltage during 600 W transient, limiting stress on downstream components |
| IPPM | 11.1 A (10/1000 µs) - peak surge current capacity directly tied to PCB pad layout and thermal management |
| RθJA | 100 °C/W - junction-to-ambient thermal resistance determines derating above 25 °C ambient |
| TJ max. | +150 °C - maximum junction temperature enabling operation in under-hood automotive environments |
| AEC-Q101 | Qualified - certified for automotive-grade reliability including temperature cycling, HTRB, and ESD testing |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, halogen-free, RoHS-compliant, with cathode band marking. Dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H); recommended mounting pad: 5.0 mm × 5.0 mm per terminal.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point in forward bias; connected to system ground or low-side reference | Enables unidirectional clamping from cathode to anode during positive transients on protected line |
| Cathode | Current exit point in forward bias; marked with band, connected to protected signal/power line | Defines polarity-sensitive protection path - reverse-biased during normal operation, avalanches during overvoltage |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Withstands high-energy transients common in automotive load-dump and inductive switch-off events |
| Glass passivated junction | Ensures long-term VBR stability and low parameter drift across temperature and lifetime |
| MSL Level 1, 260 °C reflow compatible | Supports lead-free SMT assembly without preconditioning or special handling |
| Halogen-free & RoHS-compliant (HM3 suffix) | Fulfills environmental compliance requirements for automotive and industrial end equipment |
| Low incremental surge resistance | Minimizes clamping voltage overshoot during fast-rising transients (e.g., ESD, ISO 10605) |
Applications
| Automotive Power Supply Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: Protecting 12 V/24 V power rails in engine control units (ECUs) and body control modules (BCMs) from load-dump transients up to ISO 7637-2 Pulse 5a. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and input of DC-DC converter or LDO regulator. Use Value: Clamps transients to ≤53.9 V, preventing damage to downstream regulators rated for 40 V absolute maximum input. |
Use Scenario: Safeguarding analog output lines (e.g., 4–20 mA, 0–10 V) of pressure/temperature sensors in factory automation systems exposed to relay coil flyback. IC Role / Device Role / Timing Role: TVS mounted at sensor connector interface, shunting induced surges before reaching ADC front-end or op-amp buffer. Use Value: Limits voltage excursion to <54 V during 10/1000 µs transients, preserving signal integrity and avoiding ADC saturation or latch-up. |
| Consumer Power Adapter Input Stage | Telecom Equipment DC Input Protection |
Use Scenario: Secondary-side overvoltage suppression in AC-DC adapters for smart home devices subjected to lightning-induced surges on mains-connected outputs. IC Role / Device Role / Timing Role: TVS placed across isolated DC output (e.g., 5 V, 12 V) after secondary rectification and filtering. Use Value: Absorbs 600 W pulses without degradation, maintaining output regulation and preventing brownout or reset in connected microcontrollers. |
Use Scenario: DC input protection for PoE-powered network switches and base station radios receiving 48 V DC via outdoor cabling vulnerable to induced surges. IC Role / Device Role / Timing Role: TVS installed at DC jack input, upstream of hot-swap controller and primary DC-DC stage. Use Value: Clamps 48 V rail to safe levels during 10/1000 µs transients, ensuring uninterrupted operation and meeting IEC 61000-4-5 Level 3 immunity. |
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-E3/52 | Same VBR range (37.1–41.0 V), but SMA package (smaller footprint, lower IPPM = 9.9 A, lower PPPM = 400 W) | Limited to lower-energy transients; unsuitable for automotive load-dump where 600 W rating is mandatory | Select only when board space is constrained and surge energy remains below 400 W |
| 1.5SMC39A | Same VBR, but SMC package (larger than SMB), higher thermal mass, RθJA = 60 °C/W, IPPM = 14.3 A | Better thermal performance but incompatible with fine-pitch automated placement due to larger body size | Prefer for high-reliability industrial designs requiring extended surge endurance and manual rework tolerance |
Compared with SMAJ39A-E3/52 and 1.5SMC39A, P6SMB39AHM3_A/I delivers optimal balance of 600 W surge capability, AEC-Q101 qualification, SMB footprint compatibility with high-speed SMT lines, and halogen-free compliance - making it the preferred choice for automotive and volume industrial applications demanding both robustness and manufacturability.
Availability
P6SMB39AHM3_A/I is available at Aetrix Electronics and suitable for automotive power supply protection, industrial sensor interface hardening, and telecom DC input surge suppression requiring stable component supply, AEC-Q101 traceability, and halogen-free compliance.
Supply support for P6SMB39AHM3_A/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, efficiency, and application-specific optimization.
The P6SMB Series is designed for high-energy transient suppression in automotive, industrial, and consumer electronics - delivering standardized 600 W surge capability, AEC-Q101 qualification, and surface-mount scalability across 6.8 V to 540 V standoff voltages.
FAQ
What is the clamping voltage of P6SMB39AHM3_A/I at its rated peak pulse current?
The P6SMB39AHM3_A/I has a maximum clamping voltage (VC) of 53.9 V at its rated peak pulse current (IPPM) of 11.1 A, measured under the standard 10/1000 µs double-exponential waveform. This value is guaranteed across the full operating temperature range and defines the upper voltage limit imposed on protected circuitry during transient events. The P6SMB39AHM3_A/I maintains this clamping performance due to its low incremental surge resistance and stable avalanche characteristics.
Is P6SMB39AHM3_A/I qualified for automotive applications?
Yes, P6SMB39AHM3_A/I is AEC-Q101 qualified, as indicated by the "HM3" suffix and documented in Vishay's official P6SMB series specification (Document Number 88370, Rev. 09-Jan-2024). It undergoes rigorous stress testing including temperature cycling, high-temperature reverse bias (HTRB), and ESD per AEC-Q101 requirements. The P6SMB39AHM3_A/I is specifically intended for under-hood and chassis-mounted automotive systems where reliability under thermal and mechanical stress is critical.
What does the "_A/I" suffix mean in P6SMB39AHM3_A/I?
The "_A/I" suffix in P6SMB39AHM3_A/I denotes packaging configuration: "A" indicates the device is part of the AEC-Q101-qualified HM3 variant, and "I" specifies 13-inch diameter plastic tape-and-reel delivery with 3200 units per reel. This format supports high-volume automated SMT placement. The P6SMB39AHM3_A/I is not a functional variant - electrical and thermal specifications match those of other P6SMB39AHM3 units regardless of reel size.
How does the thermal resistance of P6SMB39AHM3_A/I affect its derating in real-world PCB layouts?
P6SMB39AHM3_A/I has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on minimum recommended 5.0 mm × 5.0 mm copper pads per terminal. At ambient temperatures above 25 °C, its peak pulse power must be linearly derated - e.g., at 75 °C ambient, maximum PPPM drops to 300 W. This derating is defined in Figure 2 of the Vishay P6SMB datasheet. The P6SMB39AHM3_A/I's performance is highly dependent on PCB copper area; reducing pad size increases RθJA and accelerates thermal saturation during repetitive surges.
Can P6SMB39AHM3_A/I be used in bidirectional configurations?
No, P6SMB39AHM3_A/I is a unidirectional TVS diode, as confirmed by its "A" suffix (not "CA") and explicit designation in the Vishay P6SMB series documentation. Bidirectional variants use the "CA" suffix (e.g., P6SMB39CA) and exhibit symmetrical clamping in both polarities. Using P6SMB39AHM3_A/I in a bidirectional application would leave the reverse-polarity transient path unprotected. For true bidirectional protection, select P6SMB39CA or equivalent - the P6SMB39AHM3_A/I is strictly for single-polarity clamping scenarios.
P6SMB39AHM3_A/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:
- Obsolete
- 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_A/I FAQ
1.How can I place an order for P6SMB39AHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB39AHM3_A/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_A/I reliable?
The price and inventory of P6SMB39AHM3_A/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_A/I is usually 5 days.
3.What payment methods are accepted for P6SMB39AHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB39AHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB39AHM3_A/I?
P6SMB39AHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB39AHM3_A/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_A/I?
For technical support, including P6SMB39AHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB39AHM3_A/I requirements.
6.How does Aetrix verify that P6SMB39AHM3_A/I is sourced from the original manufacturer or authorized distributors?
All P6SMB39AHM3_A/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_A/I meets industry standards.
7.What is the process for return or replacement of P6SMB39AHM3_A/I?
All P6SMB39AHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB39AHM3_A/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_A/I part is unused and in its original packaging.
Return procedure for P6SMB39AHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB39AHM3_A/I Tags
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Diodes Incorporated
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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