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Vishay General Semiconductor - Diodes Division P6SMB250AHM3_A/I
- Part No.:
- P6SMB250AHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB250AHM3_A/I.pdf
- Description:
- TVS DIODE 214VWM 344VC DO214AA
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
P6SMB250AHM3_A/I from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, rated for 250 V standoff voltage (VWM), 263 V maximum breakdown voltage (VBR), and 600 W peak pulse power (10/1000 μs). It clamps transients to 344 V at 1.74 A peak pulse current and is halogen-free, RoHS-compliant, and AEC-Q101 qualified for automotive applications.
For engineers reviewing the P6SMB250AHM3_A/I datasheet, P6SMB250AHM3_A/I pinout, P6SMB250AHM3_A/I application, or P6SMB250AHM3_A/I equivalent, key selection criteria include its 250 V stand-off rating, 344 V clamping voltage under 1.74 A surge, AEC-Q101 qualification status, SMB package thermal resistance (RθJA = 100 °C/W), and suitability for protecting high-voltage DC bus lines in automotive power electronics.
Technical Context
This TVS diode operates as a unidirectional clamping device with cathode-band polarity marking, designed to shunt transient energy away from sensitive downstream circuitry during overvoltage events such as load dump or inductive switching. Its glass-passivated junction ensures stable leakage performance and fast response time (<1 ns).
Rated for 150 °C maximum junction temperature and 100 A non-repetitive forward surge current (8.3 ms half-sine), it supports robust protection in harsh environments. The HM3 suffix confirms halogen-free, RoHS-compliant construction and AEC-Q101 qualification per ordering code P6SMB250AHM3_D/I - where "D" denotes AEC-Q101 qualification for 250–540 V variants.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 250 V - Maximum continuous reverse operating voltage before clamping initiates; defines safe DC bus operating margin. |
| VBR (Breakdown Voltage) | 237–263 V at 1 mA - Confirmed avalanche onset range; ensures predictable turn-on during transients. |
| VC (Clamping Voltage) | 344 V at IPPM = 1.74 A (10/1000 μs) - Peak voltage seen by protected IC/MOSFET during worst-case surge. |
| PPPM (Peak Pulse Power) | 600 W - Sustains standardized 10/1000 μs surge without failure; validates robustness against ISO 7637-2 Pulse 5a. |
| ID (Reverse Leakage) | 1.0 μA max at 250 V - Negligible standby current; avoids parasitic loading on high-impedance sensor or control lines. |
| TJ max | 150 °C - Enables operation in under-hood automotive environments and industrial power supplies. |
| RθJA | 100 °C/W - Thermal resistance from junction to ambient on standard 0.2" × 0.2" copper pads; informs heatsinking requirements. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002. Cathode identified by band marking; anode is unmarked end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink | Connected to protected line (e.g., +12 V rail); conducts surge current to ground when V > VBR. |
| Anode (unbanded end) | Reference node | Typically tied to system ground or low-impedance return path; completes clamping loop during overvoltage event. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive powertrain and chassis applications per stress test requirements (HTOL, TCT, H3TRB). |
| Halogen-free & RoHS-compliant (HM3) | Meets EU Directive 2011/65/EU and IEC 61249-2-21; eliminates brominated flame retardants in molding compound. |
| 600 W peak pulse power (10/1000 μs) | Withstands ISO 7637-2 Pulse 5a (load dump) up to 120 V peak on 24 V systems with margin. |
| Low incremental surge resistance | Minimizes clamping voltage overshoot during fast-rising transients (e.g., ESD or relay bounce). |
| MSL Level 1 (260 °C peak reflow) | Compatible with standard lead-free SMT reflow profiles without moisture sensitivity concerns. |
Applications
| Automotive Load Dump Protection | Industrial DC Bus Surge Suppression |
|---|---|
|
Use Scenario: Protecting engine control unit (ECU) power input during alternator load dump events in 24 V commercial vehicles. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail (+24 V) and ground, clamping transients exceeding 250 V. Use Value: Limits voltage to ≤344 V during 600 W surges, preventing damage to 36 V-rated DC-DC converters and microcontrollers. |
Use Scenario: Safeguarding motor drive inverters against switching-induced voltage spikes on 200–300 V DC link buses. IC Role / Device Role / Timing Role: Standoff-rated TVS connected across DC+ and DC− rails to absorb repetitive commutation transients. Use Value: Maintains <1 μA leakage at 250 V, avoiding efficiency loss while clamping 1.74 A surges to 344 V within nanoseconds. |
| Telecom Power Supply Input Protection | Renewable Energy Charge Controller Interface |
|
Use Scenario: Shielding PoE-powered base station front-end from lightning-induced surges on -48 V telecom distribution lines. IC Role / Device Role / Timing Role: High-VWM unidirectional TVS installed at input filter stage, referenced to system ground. Use Value: Withstands 600 W pulses without degradation, enabling compliance with ITU-T K.20/21 immunity standards. |
Use Scenario: Protecting solar charge controller MOSFET gate drivers from inductive kickback during PV array disconnection. IC Role / Device Role / Timing Role: Clamping diode placed across high-side switch source-drain or gate-source, referenced to local ground. Use Value: 263 V VBR ensures no false triggering during normal 250 V PV open-circuit conditions; 150 °C TJ rating supports outdoor enclosure use. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ250A-Q | Same VWM (250 V), lower PPPM (400 W), SMA package (higher RθJA ≈ 150 °C/W). | Limited to lower-energy transients; less suitable for automotive load dump. | Select only if space-constrained and surge energy is confirmed ≤400 W. |
| 1.5SMC250A | Same VWM/VBR/PPPM specs, but SMC (DO-214AB) package - larger footprint, lower RθJA (70 °C/W). | Better thermal performance in high-power or high-ambient-temperature designs. | Prefer when board layout allows larger pad area and thermal management is critical. |
Compared with SMAJ250A-Q, P6SMB250AHM3_A/I delivers 50 % higher surge power handling and superior thermal reliability; versus 1.5SMC250A, it trades 30 % smaller PCB area for 43 % higher junction-to-ambient thermal resistance - making it optimal for space-limited automotive modules where AEC-Q101 compliance is mandatory.
Availability
P6SMB250AHM3_A/I is available at Aetrix Electronics and suitable for automotive power electronics, industrial DC bus protection, telecom power inputs, and renewable energy charge controllers requiring stable component supply and long-term lifecycle support.
Supply support for P6SMB250AHM3_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, rectifiers, TVS devices, and optoelectronics with emphasis on reliability, automotive qualification, and high-volume manufacturability.
The P6SMB Series was developed specifically for high-energy transient suppression in automotive, industrial, and telecom infrastructure, combining AEC-Q101 qualification, 600 W surge capability, and SMB package compatibility with automated assembly.
FAQ
What is the clamping voltage of the P6SMB250AHM3_A/I under a 10/1000 μs surge?
The P6SMB250AHM3_A/I clamps to a maximum of 344 V when subjected to a 1.74 A peak pulse current with 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 surge events. The P6SMB250AHM3_A/I maintains this clamping performance across its qualified operating temperature range.
Is the P6SMB250AHM3_A/I AEC-Q101 qualified, and what does the 'HM3' suffix indicate?
Yes, the P6SMB250AHM3_A/I is AEC-Q101 qualified - confirmed by the 'D' qualifier in its full ordering code (P6SMB250AHM3_D/I), which Vishay reserves for AEC-Q101-tested variants in the 250–540 V range. The 'HM3' suffix denotes halogen-free, RoHS-compliant construction with matte tin plating and JESD201 Class 2 whisker resistance. The P6SMB250AHM3_A/I meets all stress tests required for automotive power electronics deployment.
How does the SMB package of the P6SMB250AHM3_A/I compare thermally to larger packages like SMC?
The SMB (DO-214AA) package of the P6SMB250AHM3_A/I has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W on standard 0.2" × 0.2" copper pads, versus ~70 °C/W for the larger SMC (DO-214AB) package. This means the P6SMB250AHM3_A/I requires more careful thermal design in high-duty-cycle or high-ambient-temperature applications. However, its compact size makes the P6SMB250AHM3_A/I ideal for space-constrained automotive modules where AEC-Q101 compliance is non-negotiable.
Can the P6SMB250AHM3_A/I be used in bidirectional configurations?
No - the P6SMB250AHM3_A/I is a unidirectional TVS diode, as indicated by the 'A' suffix (not 'CA') and cathode band marking. Bidirectional operation requires a part with 'CA' suffix (e.g., P6SMB250CA), which exhibits symmetrical clamping in both polarities. Using the unidirectional P6SMB250AHM3_A/I in reverse-biased AC applications would result in forward conduction and potential failure. Always verify polarity alignment before integrating the P6SMB250AHM3_A/I into the circuit.
What is the maximum reverse leakage current of the P6SMB250AHM3_A/I at its rated standoff voltage?
The P6SMB250AHM3_A/I exhibits a maximum reverse leakage current (ID) of 1.0 μA at its rated standoff voltage of 250 V and TA = 25 °C. This ultra-low leakage ensures minimal power loss and avoids interference with high-impedance sensing circuits or precision voltage references. Leakage remains well below 10 μA even at elevated temperatures up to 125 °C, supporting reliable operation in demanding environments. The P6SMB250AHM3_A/I's glass-passivated junction contributes directly to this stable leakage performance.
P6SMB250AHM3_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:
- Discontinued at Digi-Key
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 214V
- Voltage - Breakdown (Min):
- 237V
- Voltage - Clamping (Max) @ Ipp:
- 344V
- Current - Peak Pulse (10/1000µs):
- 1.74A
- 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)
P6SMB250AHM3_A/I FAQ
1.How can I place an order for P6SMB250AHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB250AHM3_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 P6SMB250AHM3_A/I reliable?
The price and inventory of P6SMB250AHM3_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 P6SMB250AHM3_A/I is usually 5 days.
3.What payment methods are accepted for P6SMB250AHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB250AHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB250AHM3_A/I?
P6SMB250AHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB250AHM3_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 P6SMB250AHM3_A/I?
For technical support, including P6SMB250AHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB250AHM3_A/I requirements.
6.How does Aetrix verify that P6SMB250AHM3_A/I is sourced from the original manufacturer or authorized distributors?
All P6SMB250AHM3_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 P6SMB250AHM3_A/I meets industry standards.
7.What is the process for return or replacement of P6SMB250AHM3_A/I?
All P6SMB250AHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB250AHM3_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 P6SMB250AHM3_A/I part is unused and in its original packaging.
Return procedure for P6SMB250AHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB250AHM3_A/I Tags
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