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Vishay General Semiconductor - Diodes Division P6SMB39AHE3_A/I
- Part No.:
- P6SMB39AHE3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB39AHE3_A/I.pdf
- Description:
- TVS DIODE 33.3VWM 53.9VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,752
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Product details
Overview
P6SMB39AHE3_A/I from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, featuring 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. It delivers 600 W peak pulse power (10/1000 μs waveform) and is AEC-Q101 qualified for automotive applications including power line and sensor interface protection.
For engineers reviewing the P6SMB39AHE3_A/I datasheet, P6SMB39AHE3_A/I pinout, P6SMB39AHE3_A/I application, or P6SMB39AHE3_A/I equivalent, key selection criteria include clamping performance under 10/1000 μs transients, unidirectional polarity with cathode band marking, thermal resistance (RθJA = 100 °C/W), RoHS-compliant matte tin terminals, and AEC-Q101 qualification status confirmed by HE3 suffix and revision code "A".
Technical Context
This TVS diode operates as a unidirectional overvoltage clamp, leveraging an avalanche breakdown mechanism to divert transient energy away from downstream ICs or MOSFETs. Its glass-passivated junction ensures stable VBR tolerance (±5%) and low leakage (<1.0 μA at VWM), while MSL Level 1 rating supports lead-free reflow up to 260 °C.
Designed for fast response (<1 ns), it maintains low incremental surge resistance and excellent clamping ratio (VC/VBR ≈ 1.42), enabling robust protection against inductive switching spikes and ESD events in 12 V–48 V automotive and industrial systems. The SMB package provides mechanical reliability with UL 94 V-0 molding compound and J-STD-002 solderable terminals.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 37.1 V / 41.0 V at 1.0 mA - defines precise avalanche onset range for repeatable clamping threshold |
| 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 protected circuitry |
| PPPM | 600 W (10/1000 μs) - peak surge power handling capability per industry-standard waveform |
| IPPM | 11.1 A - peak pulse current corresponding to VC, used for PCB trace and layout sizing |
| RθJA | 100 °C/W - junction-to-ambient thermal resistance, critical for derating above 25 °C ambient |
| TJ max | +150 °C - maximum junction temperature, supporting operation in under-hood automotive environments |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile case with matte tin-plated leads. Cathode identified by molded band; anode is unmarked end. Meets UL 94 V-0 flammability rating and JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink | Connected to protected line; conducts avalanche current to ground during overvoltage event |
| Anode (unbanded end) | Reference node | Typically tied to system ground or low-impedance return path; completes clamping loop |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per JEDEC standards |
| 600 W peak pulse power | Withstands high-energy transients common in 12 V/24 V vehicle power networks without degradation |
| Glass passivated junction | Ensures stable VBR and low leakage across -65 °C to +150 °C operating range |
| MSL Level 1 moisture sensitivity | Enables standard SMT reflow without baking; compatible with lead-free processes up to 260 °C peak |
| Low clamping ratio (VC/VBR ≈ 1.42) | Minimizes voltage overshoot during clamping, reducing risk of damage to downstream logic or analog circuits |
Applications
| Automotive Power Line Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: Protecting 12 V battery-fed ECUs from load dump and alternator ripple transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and chassis ground to clamp surges exceeding 33.3 V. Use Value: Limits peak voltage to 53.9 V during 600 W transients, preventing latch-up or gate oxide damage in MCU power supplies. |
Use Scenario: Safeguarding analog outputs of pressure/temperature sensors connected to long harnesses. IC Role / Device Role / Timing Role: Clamping device on signal line to suppress coupled ESD and inductive kickback. Use Value: Sub-1 ns response time and 53.9 V clamping prevent sensor output saturation and ADC input damage. |
| Telecom DC Power Input Protection | Consumer Power Adapter Output Protection |
|
Use Scenario: Shielding PoE-powered equipment inputs from Ethernet-coupled surges and lightning-induced spikes. IC Role / Device Role / Timing Role: Primary overvoltage clamp on 48 V DC input rail before DC-DC converter stage. Use Value: 600 W rating handles repetitive 10/1000 μs transients without thermal runaway; RθJA = 100 °C/W enables compact layout. |
Use Scenario: Securing USB-C PD adapter secondary-side outputs against output short-circuit transients. IC Role / Device Role / Timing Role: Unidirectional TVS on regulated 20 V output to absorb flyback energy during fault conditions. Use Value: 33.3 V VWM allows safe operation at nominal 20 V output; 53.9 V VC prevents downstream USB-PD controller damage. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ39A-E3/5B | Same SMB package, identical VBR (37.1–41.0 V), but rated for 400 W PPPM and not AEC-Q101 qualified | Limited to commercial-grade industrial or consumer use; lacks automotive qualification documentation | Select when AEC-Q101 is not required and cost optimization is prioritized over 600 W headroom |
| 1.5SMC39A | Higher-power SMC package (same VBR, 600 W), larger footprint (7.11 × 6.22 mm vs. SMB's 4.57 × 3.94 mm), RθJA = 30 °C/W | Better thermal performance but requires PCB area increase; suited for high-reliability non-automotive systems | Choose when board space permits and lower junction temperature rise is critical under sustained surge duty |
Compared with SMAJ39A-E3/5B, P6SMB39AHE3_A/I offers higher surge robustness and automotive qualification; versus 1.5SMC39A, it trades thermal margin for compact size and AEC-Q101 compliance-making it optimal for space-constrained automotive modules.
Availability
P6SMB39AHE3_A/I is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor interfaces, telecom power inputs, and consumer power adapter protection requiring stable component supply and AEC-Q101 assurance.
Supply support for P6SMB39AHE3_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 designs and manufactures discrete semiconductors including diodes, rectifiers, and TVS devices, with emphasis on reliability, precision, and application-specific qualification.
The P6SMB Series targets automotive and industrial transient suppression, delivering AEC-Q101-qualified, high-power TVS diodes in compact SMB packages for space- and reliability-critical designs.
FAQ
What does the "HE3_A/I" suffix indicate in P6SMB39AHE3_A/I?
The "HE3" denotes RoHS-compliant and AEC-Q101 qualified construction; "A" is the revision code confirming compliance with the 09-Jan-2024 datasheet revision; "I" specifies 3200-unit 13-inch tape-and-reel packaging. This full suffix confirms P6SMB39AHE3_A/I meets automotive reliability requirements and ships in high-volume production format.
Is P6SMB39AHE3_A/I bidirectional or unidirectional?
P6SMB39AHE3_A/I is unidirectional, as indicated by the "A" (not "CA") suffix and presence of cathode band marking. It conducts only in reverse bias during overvoltage events and must be oriented with the banded end toward the protected line. Bidirectional variants use "CA" suffix (e.g., P6SMB39CA).
What is the maximum clamping voltage of P6SMB39AHE3_A/I and under what test condition?
The maximum clamping voltage of P6SMB39AHE3_A/I is 53.9 V, measured at 11.1 A peak pulse current (IPPM) using the standardized 10/1000 μs double-exponential waveform. This value defines the upper voltage limit imposed on protected circuitry during worst-case transient events.
Can P6SMB39AHE3_A/I be used in lead-free reflow processes?
Yes, P6SMB39AHE3_A/I meets MSL Level 1 per J-STD-020 and supports lead-free reflow with a maximum peak temperature of 260 °C. Its matte tin-plated terminals comply with J-STD-002 and JESD 22-B102, ensuring reliable solder joint formation without pre-baking.
How does the thermal resistance of P6SMB39AHE3_A/I affect its surge capability at elevated ambient temperatures?
With RθJA = 100 °C/W, P6SMB39AHE3_A/I requires derating above 25 °C ambient: at 85 °C, its 600 W peak pulse power drops to ~360 W per Fig. 2 in the datasheet. Layout with 0.2" × 0.2" copper pads per terminal is essential to maintain specified thermal performance and avoid junction overheating.
P6SMB39AHE3_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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
P6SMB39AHE3_A/I FAQ
1.How can I place an order for P6SMB39AHE3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB39AHE3_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 P6SMB39AHE3_A/I reliable?
The price and inventory of P6SMB39AHE3_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 P6SMB39AHE3_A/I is usually 5 days.
3.What payment methods are accepted for P6SMB39AHE3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB39AHE3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB39AHE3_A/I?
P6SMB39AHE3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB39AHE3_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 P6SMB39AHE3_A/I?
For technical support, including P6SMB39AHE3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB39AHE3_A/I requirements.
6.How does Aetrix verify that P6SMB39AHE3_A/I is sourced from the original manufacturer or authorized distributors?
All P6SMB39AHE3_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 P6SMB39AHE3_A/I meets industry standards.
7.What is the process for return or replacement of P6SMB39AHE3_A/I?
All P6SMB39AHE3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB39AHE3_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 P6SMB39AHE3_A/I part is unused and in its original packaging.
Return procedure for P6SMB39AHE3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB39AHE3_A/I Tags
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