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Vishay General Semiconductor - Diodes Division P6SMB120AHM3_B/I
- Part No.:
- P6SMB120AHM3_B/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB120AHM3_B/I.pdf
- Description:
- 600W,120V 5%,UNIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:4,011
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Product details
Overview
P6SMB120AHM3_B/I from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping voltage transients up to 165 V at 3.6 A peak pulse current (10/1000 μs), with 600 W peak pulse power rating and 102 V stand-off voltage - deployed in automotive power supply rails and industrial sensor interface protection.
For engineers reviewing the P6SMB120AHM3_B/I datasheet, P6SMB120AHM3_B/I pinout, P6SMB120AHM3_B/I application, or P6SMB120AHM3_B/I equivalent, key selection criteria include clamping voltage (VC = 165 V), stand-off voltage (VWM = 102 V), AEC-Q101 qualification status, unidirectional polarity, and SMB package thermal resistance (RθJA = 100 °C/W).
Technical Context
This TVS diode operates as a unidirectional clamping device with a breakdown voltage range of 114–126 V at 1 mA test current, enabling robust overvoltage protection on DC power lines where reverse polarity is not expected. Its glass-passivated junction ensures stable leakage performance (<1.0 μA at VWM) and fast response time under transient events.
The device is rated for 150 °C maximum junction temperature and meets J-STD-020 MSL Level 1 moisture sensitivity, supporting lead-free reflow up to 260 °C peak. It delivers 600 W peak pulse power handling with 10/1000 μs waveform and supports repetitive surge duty cycle of 0.01 %.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 102 V - Maximum continuous reverse operating voltage before clamping begins; defines safe DC rail margin. |
| VBR (Breakdown) | 114–126 V at 1 mA - Confirmed avalanche initiation range; ensures predictable turn-on during transients. |
| VC (Clamping) | 165 V at IPPM = 3.6 A - Peak voltage seen by protected circuit during 10/1000 μs surge; determines downstream IC survivability. |
| PPPM | 600 W - Peak transient energy absorption capability; validated per REA-defined 10/1000 μs waveform. |
| Package | SMB (DO-214AA) - Surface-mount footprint with 5.59 mm × 4.06 mm body; compatible with automated placement and IPC-7351B land patterns. |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD; suffix HM3_B/I denotes halogen-free, RoHS-compliant AEC-Q101 version. |
| RθJA | 100 °C/W - Junction-to-ambient thermal resistance on standard 0.2" × 0.2" copper pads; informs derating above 25 °C ambient. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, unidirectional configuration with cathode band marking. Dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H); matte tin-plated leads compliant with J-STD-002 solderability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to system ground or low-side return path; conducts during forward surge (e.g., reverse polarity fault). |
| Cathode | Reverse-biased clamping terminal | Connected to protected line (e.g., +12 V rail); initiates avalanche breakdown when voltage exceeds VBR. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 μs) | Enables protection against ISO 7637-2 Pulse 1/2a/5a-level transients in 12 V automotive systems without external series impedance. |
| AEC-Q101 qualified (HM3_B/I) | Validated for automotive under-hood and infotainment applications requiring extended temperature operation (−65 °C to +150 °C). |
| Low clamping ratio (VC/VBR ≈ 1.38) | Minimizes overvoltage stress on downstream MOSFETs or CAN transceivers during ESD or load dump events. |
| MSL Level 1, 260 °C peak reflow | Supports single-pass lead-free assembly without preconditioning; eliminates moisture-related popcorning risk. |
| Glass-passivated junction | Ensures stable leakage (<1 μA at 102 V) and long-term parameter stability across humidity and thermal cycling. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface |
|---|---|
|
Use Scenario: Protecting 12 V battery-fed ECUs from load dump transients (ISO 7637-2 Pulse 5a) and alternator overshoot. IC Role / Device Role / Timing Role: Unidirectional clamping element placed between power input and upstream fuse or DC-DC converter input. Use Value: Limits voltage to ≤165 V during 100 V/100 ms transients, preventing damage to 36 V-rated input stages of PMICs and microcontrollers. |
Use Scenario: Safeguarding analog sensor outputs (e.g., pressure, temperature) connected to PLC I/O modules exposed to field wiring surges. IC Role / Device Role / Timing Role: Standoff-clamp TVS on signal line, positioned after series resistor and before op-amp input. Use Value: Clamps induced lightning-induced surges (IEC 61000-4-5 2 kV/12 Ω) to <170 V, preserving 24 V signal integrity and ADC front-end reliability. |
| Telecom Power Supply Input | Consumer Appliance Motor Drive |
|
Use Scenario: Input-stage protection for AC/DC adapters powering PoE switches or base station control cards. IC Role / Device Role / Timing Role: Primary transient suppressor on secondary-side DC bus (e.g., +48 V output), upstream of bulk capacitor. Use Value: Absorbs 600 W surge energy from switching noise or hot-plug events while maintaining <105 V standoff for 48 V nominal systems. |
Use Scenario: Overvoltage suppression on brushed DC motor driver H-bridge supply rails in washing machines or HVAC blowers. IC Role / Device Role / Timing Role: Unidirectional TVS across VCC and GND near motor driver IC, parallel to bulk electrolytic. Use Value: Clamps inductive kickback from motor commutation (up to 150 V spikes) within 1 ns, preventing latch-up in gate drivers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ120A-E3/5B | Same VWM (102 V), VC = 165 V, but non-AEC-Q101; SMA package (smaller footprint, higher RθJA = 140 °C/W). | Limited to commercial-grade industrial or consumer use; unsuitable for automotive under-hood deployment. | Select when cost or board space is critical and AEC-Q101 compliance is not required. |
| TPSMD120A | Identical electrical specs (VWM = 102 V, VC = 165 V), AEC-Q101 qualified, but in larger SMC (DO-214AB) package (RθJA = 75 °C/W). | Better thermal performance for high-duty-cycle surge environments; requires larger PCB area. | Choose when enhanced thermal dissipation is needed in high-temperature enclosures or repeated surge exposure. |
Compared with SMAJ120A-E3/5B and TPSMD120A, the P6SMB120AHM3_B/I offers optimal balance of AEC-Q101 qualification, SMB footprint compactness, and validated 600 W surge capability - making it preferred for space-constrained automotive modules requiring production-grade reliability.
Availability
P6SMB120AHM3_B/I is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor interfaces, telecom power supplies, and appliance motor drive circuits requiring stable component supply and AEC-Q101 traceability.
Supply support for P6SMB120AHM3_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, and protection devices with emphasis on reliability, efficiency, and application-specific validation.
The P6SMB Series targets high-energy transient suppression in automotive, industrial, and telecom infrastructure, engineered for robust clamping performance, AEC-Q101 compliance, and compatibility with automated SMT assembly.
FAQ
What is the maximum clamping voltage of the P6SMB120AHM3_B/I under a 10/1000 μs surge?
The P6SMB120AHM3_B/I has a maximum clamping voltage (VC) of 165 V when subjected to its rated peak pulse current of 3.6 A using the standardized 10/1000 μs waveform. This value is measured per REA definition and confirmed in the Vishay datasheet revision 09-Jan-2024, ensuring predictable overvoltage limiting for downstream components in the protected circuit.
Is the P6SMB120AHM3_B/I AEC-Q101 qualified, and what does the 'HM3_B/I' suffix indicate?
Yes, the P6SMB120AHM3_B/I is AEC-Q101 qualified. The 'HM3' portion denotes halogen-free and RoHS-compliant construction, 'B' indicates AEC-Q101 qualification for the 6.8 V–220 V voltage range, and '/I' specifies 3200-unit tape-and-reel packaging on a 13-inch diameter reel - all verified in Vishay's official ordering information table.
What is the standoff voltage (VWM) and breakdown voltage (VBR) range for the P6SMB120AHM3_B/I?
The P6SMB120AHM3_B/I has a standoff voltage (VWM) of 102 V and a breakdown voltage (VBR) range of 114 V to 126 V at 1 mA test current. These values are explicitly listed in the Electrical Characteristics table of the Vishay P6SMB datasheet (Document Number: 88370), confirming its suitability for 100–120 V DC system protection.
Can the P6SMB120AHM3_B/I be used in bidirectional configurations?
No, the P6SMB120AHM3_B/I is a unidirectional TVS diode, as indicated by the 'A' suffix and absence of 'CA' in the part number. Bidirectional variants (e.g., P6SMB120CA) exist in the same series but have different marking, polarity behavior, and leakage characteristics - the P6SMB120AHM3_B/I must be oriented with cathode toward the protected line.
What is the thermal resistance and maximum junction temperature rating for the P6SMB120AHM3_B/I?
The P6SMB120AHM3_B/I has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 0.2" × 0.2" copper pads, and a maximum junction temperature (TJ) rating of +150 °C. These parameters are specified in the Thermal Characteristics section of the Vishay datasheet and define safe operating limits under sustained power dissipation or elevated ambient conditions.
P6SMB120AHM3_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):
- 102V
- Voltage - Breakdown (Min):
- 114V
- Voltage - Clamping (Max) @ Ipp:
- 165V
- Current - Peak Pulse (10/1000µs):
- 3.6A
- 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)
P6SMB120AHM3_B/I FAQ
1.How can I place an order for P6SMB120AHM3_B/I through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB120AHM3_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 P6SMB120AHM3_B/I reliable?
The price and inventory of P6SMB120AHM3_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 P6SMB120AHM3_B/I is usually 5 days.
3.What payment methods are accepted for P6SMB120AHM3_B/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB120AHM3_B/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB120AHM3_B/I?
P6SMB120AHM3_B/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB120AHM3_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 P6SMB120AHM3_B/I?
For technical support, including P6SMB120AHM3_B/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB120AHM3_B/I requirements.
6.How does Aetrix verify that P6SMB120AHM3_B/I is sourced from the original manufacturer or authorized distributors?
All P6SMB120AHM3_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 P6SMB120AHM3_B/I meets industry standards.
7.What is the process for return or replacement of P6SMB120AHM3_B/I?
All P6SMB120AHM3_B/I units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB120AHM3_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 P6SMB120AHM3_B/I part is unused and in its original packaging.
Return procedure for P6SMB120AHM3_B/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB120AHM3_B/I Tags
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