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Vishay General Semiconductor - Diodes Division P6SMB120AHM3/H
- Part No.:
- P6SMB120AHM3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB120AHM3/H.pdf
- Description:
- TVS DIODE 102VWM 165VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:9,736
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Product details
Overview
P6SMB120AHM3/H from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, rated for 120 V standoff voltage (VWM = 102 V), 165 V clamping voltage at 3.6 A peak pulse current (IPPM), and 600 W peak pulse power with 10/1000 µs waveform - deployed for overvoltage protection of MOSFETs, ICs, and sensor signal lines in industrial power supplies and automotive control modules.
For engineers reviewing the P6SMB120AHM3/H datasheet, P6SMB120AHM3/H pinout, P6SMB120AHM3/H application, or P6SMB120AHM3/H equivalent, key selection criteria include verified clamping performance under 10/1000 µs transients, AEC-Q101 qualification status, halogen-free RoHS compliance, thermal resistance (RθJA = 100 °C/W), and unidirectional polarity with cathode band marking.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: during transient events exceeding VWM = 102 V, it avalanches to limit voltage across protected circuitry to ≤165 V at IPPM = 3.6 A. Its glass-passivated junction ensures stable breakdown behavior and low leakage (<1 µA at VWM).
Designed for automated SMT assembly, it features matte tin-plated leads compliant with J-STD-002 and JESD 22-B102, meets MSL Level 1 per J-STD-020, and supports reflow up to 260 °C peak. The SMB package provides 5.0 mm × 5.0 mm copper pad thermal dissipation per terminal.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 102 V - maximum continuous reverse operating voltage before clamping initiates |
| VC @ IPPM | 165 V at 3.6 A - clamped voltage during 10/1000 µs surge, defining protection ceiling |
| PPPM | 600 W - peak transient power handling capability under standardized waveform |
| IPPM | 3.6 A - maximum non-repetitive peak pulse current supported at VC |
| TJ max. | +150 °C - maximum junction temperature enabling operation in under-hood automotive environments |
| RθJA | 100 °C/W - thermal resistance from junction to ambient, guiding PCB copper pad sizing |
| Leakage @ VWM | <1 µA - minimal reverse bias current preserving signal integrity in high-impedance circuits |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, halogen-free, RoHS-compliant, AEC-Q101 qualified (HM3 suffix). Cathode indicated by molded band on body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal during forward conduction | Connected to ground or lower-potential rail in unidirectional clamp configuration |
| Cathode | Current exit terminal during avalanche clamping | Connected to protected line; band-marked end defines polarity for correct PCB orientation |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD robustness |
| Halogen-free & RoHS-compliant | Meets environmental compliance requirements for modern industrial and automotive production |
| 600 W peak pulse power | Withstands high-energy transients from inductive switching or load dump without degradation |
| Low clamping ratio (VC/VBR ≈ 1.30) | Ensures tight voltage margin between breakdown and clamping, minimizing stress on downstream ICs |
| MSL Level 1 moisture sensitivity | Enables standard SMT reflow without dry-pack or baking preconditioning |
Applications
| Automotive Power Distribution | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting 12 V/24 V power rails in body control modules against load dump and alternator surge. IC Role / Device Role / Timing Role: Unidirectional shunt TVS placed between supply rail and chassis ground to clamp transients above 102 V. Use Value: Limits voltage to ≤165 V during ISO 7637-2 Pulse 5a events, preventing damage to MCU power inputs and CAN transceivers. |
Use Scenario: Shielding digital input channels of programmable logic controllers from field-wiring induced surges. IC Role / Device Role / Timing Role: Standoff-rated TVS connected across optocoupler input terminals to suppress fast-rising transients. Use Value: Maintains signal integrity under IEC 61000-4-4 EFT bursts by clamping within 1 ns, with <1 µA leakage preserving high-impedance sensing. |
| Telecom DC Power Feeds | Motor Drive Gate Driver Protection |
Use Scenario: Safeguarding PoE-powered equipment front-end rectifiers and DC-DC converters from lightning-induced surges on Ethernet cables. IC Role / Device Role / Timing Role: Primary-level TVS on 48 V DC feed, positioned upstream of filtering and regulation stages. Use Value: Absorbs 600 W transient energy without failure, meeting GR-1089-CORE Level 3 telecom surge immunity requirements. |
Use Scenario: Clamping gate-source voltage spikes on N-channel MOSFETs in half-bridge motor drivers during shoot-through or inductive flyback. IC Role / Device Role / Timing Role: Low-capacitance unidirectional TVS tied between gate and source to prevent VGS overstress. Use Value: Fast response time and 165 V clamping protect gate oxide integrity while avoiding false turn-on during PWM transitions. |
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), identical SMB package, but not AEC-Q101 qualified and uses standard RoHS (not halogen-free) | Limited to commercial/industrial use; unsuitable for automotive OEM designs requiring AEC-Q101 traceability | Select when cost-sensitive non-automotive applications prioritize availability over qualification |
| 1.5SMC120AHE3_A/H | Higher power rating (1500 W), larger SMC (DO-214AB) package, same VWM and clamping voltage | Requires PCB layout change due to larger footprint and higher thermal mass; suited for higher-energy surge environments | Choose when system-level testing reveals insufficient margin with 600 W rating, and board space permits SMC placement |
Compared with SMAJ120A-E3/5B and 1.5SMC120AHE3_A/H, P6SMB120AHM3/H uniquely delivers AEC-Q101 qualification, halogen-free construction, and SMB footprint in a single solution-enabling drop-in compliance for automotive Tier 1 suppliers without redesigning layout or qualifying new components.
Availability
P6SMB120AHM3/H is available at Aetrix Electronics and suitable for automotive power distribution, industrial PLC I/O protection, telecom DC power feeds, and motor drive gate driver protection requiring stable component supply and full AEC-Q101 traceability.
Supply support for P6SMB120AHM3/H 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, precision, and automotive-grade validation.
The P6SMB Series targets high-volume, high-reliability transient suppression in space-constrained SMT applications - engineered specifically for automotive, industrial, and telecom systems demanding consistent clamping, low leakage, and process-compatible packaging.
FAQ
What is the clamping voltage of P6SMB120AHM3/H at its rated peak pulse current?
The P6SMB120AHM3/H clamps to a maximum of 165 V at its specified peak pulse current of 3.6 A under a 10/1000 µs waveform. This value is measured per Figure 1 in Vishay document 88370 and defines the upper voltage limit imposed on protected circuitry during surge events. The clamping voltage remains stable across temperature due to the device's controlled avalanche characteristics and glass-passivated junction.
Is P6SMB120AHM3/H qualified for automotive applications?
Yes, P6SMB120AHM3/H is AEC-Q101 qualified, as confirmed by the HM3 suffix and documentation in Vishay's P6SMB series datasheet (Rev. 09-Jan-2024, Doc. #88370). It undergoes stress testing including temperature cycling, high-temperature reverse bias, and mechanical shock - making it suitable for under-hood and chassis-mounted automotive modules where reliability under thermal and vibration stress is mandatory.
What does the "HM3" suffix indicate in P6SMB120AHM3/H?
The "HM3" suffix in P6SMB120AHM3/H denotes halogen-free, RoHS-compliant construction with AEC-Q101 qualification. Per Vishay's ordering nomenclature, "H" indicates 7-inch tape-and-reel packaging, "M3" specifies halogen-free and RoHS-compliant materials, and the "_B" or "_D" revision code (implied in HM3 for this voltage range) confirms automotive qualification level. This distinguishes it from commercial-grade variants like M3 or E3.
How does P6SMB120AHM3/H differ from bidirectional versions like P6SMB120CA?
P6SMB120AHM3/H is unidirectional, featuring a cathode band and conducting only in reverse avalanche mode - ideal for DC rail protection with defined polarity. In contrast, P6SMB120CA is bidirectional, symmetrical in both directions, and lacks polarity marking. Their breakdown voltages differ: P6SMB120AHM3/H has VBR = 114–126 V (min/max), while P6SMB120CA has VBR = 137–151 V, reflecting different test configurations and application contexts.
What is the thermal resistance of P6SMB120AHM3/H, and how does it affect PCB layout?
P6SMB120AHM3/H has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. To maintain safe junction temperatures under repetitive surges, designers must allocate sufficient copper area and consider airflow or adjacent heat sources. Reducing pad size increases RθJA, risking thermal runaway during sustained transient activity - so the recommended pad layout must be strictly followed per Vishay's package drawing.
P6SMB120AHM3/H 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):
- 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/H FAQ
1.How can I place an order for P6SMB120AHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB120AHM3/H 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/H reliable?
The price and inventory of P6SMB120AHM3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB120AHM3/H is usually 5 days.
3.What payment methods are accepted for P6SMB120AHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB120AHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB120AHM3/H?
P6SMB120AHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB120AHM3/H 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/H?
For technical support, including P6SMB120AHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB120AHM3/H requirements.
6.How does Aetrix verify that P6SMB120AHM3/H is sourced from the original manufacturer or authorized distributors?
All P6SMB120AHM3/H 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/H meets industry standards.
7.What is the process for return or replacement of P6SMB120AHM3/H?
All P6SMB120AHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB120AHM3/H, 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/H part is unused and in its original packaging.
Return procedure for P6SMB120AHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB120AHM3/H Tags
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