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Vishay General Semiconductor - Diodes Division P6SMB120AHM3_B/H
- Part No.:
- P6SMB120AHM3_B/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB120AHM3_B/H.pdf
- Description:
- 600W,120V 5%,UNIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:6,416
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Product details
Overview
P6SMB120AHM3_B/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 (VC) 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 ECUs.
For engineers reviewing the P6SMB120AHM3_B/H datasheet, P6SMB120AHM3_B/H pinout, P6SMB120AHM3_B/H application, or P6SMB120AHM3_B/H equivalent, key selection criteria include clamping performance under repetitive transients, AEC-Q101 qualification status, thermal resistance (RθJA = 100 °C/W), and halogen-free RoHS compliance per HM3 suffix.
Technical Context
This TVS diode operates as a unidirectional clamping device with cathode-band polarity marking, leveraging glass-passivated junction technology for stable breakdown behavior and low incremental surge resistance. Its 10/1000 μs pulse response enables suppression of inductive switching spikes and ESD-induced transients up to 600 W without degradation.
Designed for surface-mount assembly on 0.2" × 0.2" copper pads, it meets MSL Level 1 per J-STD-020 (peak reflow ≤ 260 °C) and supports automotive-grade reliability via AEC-Q101 qualification (denoted by _B/H suffix). The device exhibits a +0.107 %/°C temperature coefficient of VBR, ensuring predictable voltage drift across -65 °C to +150 °C operating range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 102 V - maximum continuous reverse voltage before clamping begins; defines safe operating margin below breakdown |
| VBR (Breakdown Voltage) | 114–126 V at 1 mA - sharp avalanche onset ensures precise transient detection and minimal overshoot |
| VC (Clamping Voltage) | 165 V at IPPM = 3.6 A - limits downstream voltage stress during 10/1000 μs surge events |
| PPPM (Peak Pulse Power) | 600 W - sustains high-energy transients without failure under standardized 10/1000 μs waveform |
| RθJA | 100 °C/W - thermal resistance from junction to ambient; requires PCB copper pad area ≥ 5.0 mm × 5.0 mm for rated derating |
| TJ max. | +150 °C - maximum junction temperature; enables operation in under-hood automotive and industrial environments |
| AEC-Q101 Qualified | Yes - qualified per automotive stress test standard; suffix _HM3_B/H confirms halogen-free, RoHS-compliant AEC-Q101 grade |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile plastic case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102; meets UL 94 V-0 flammability rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Anode-side connection in unidirectional configuration | Reverse-biased during normal operation; conducts only during overvoltage events to clamp to VC |
| Anode | Reference/ground-side terminal | Connected to system ground or low-impedance return path; completes clamping loop during transient |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 μs) | Handles high-energy surges common in motor drives and relay coils without parametric shift |
| Glass passivated chip junction | Ensures long-term stability of VBR and leakage current under thermal cycling and humidity stress |
| AEC-Q101 qualified (HM3_B/H) | Validated for automotive applications including engine control modules and body electronics |
| Halogen-free & RoHS-compliant | Meets environmental compliance requirements for global OEM supply chains and industrial equipment |
| MSL Level 1 moisture sensitivity | Enables standard SMT reflow without baking; peak temperature tolerance up to 260 °C |
Applications
| Automotive Engine Control Unit (ECU) | Industrial DC Power Supply Input Stage |
|---|---|
Use Scenario: Protection of microcontroller I/O pins and CAN transceiver power rails against load-dump and jump-start transients. IC Role / Device Role / Timing Role: Unidirectional TVS clamping device placed between 12 V rail and ground, triggered within nanoseconds of overvoltage event. Use Value: Limits voltage to ≤165 V during 12 V system load-dump (ISO 7637-2 Pulse 5a), preventing latch-up or gate oxide damage in protected ICs. |
Use Scenario: Safeguarding rectifier output and switching regulator input against inductive kickback from solenoid drivers. IC Role / Device Role / Timing Role: Standoff-clamp TVS connected across bulk capacitor input, absorbing energy from 600 W surge pulses. Use Value: Maintains system uptime by preventing overvoltage shutdown or component failure during frequent relay switching in factory automation systems. |
| Telecom Base Station Sensor Interface | Consumer Appliance Motor Driver Board |
Use Scenario: Shielding analog sensor signal lines (e.g., temperature, pressure) from ESD and nearby RF coupling in outdoor cabinets. IC Role / Device Role / Timing Role: Low-capacitance unidirectional TVS placed at connector entry point, referenced to local ground plane. Use Value: Clamps fast-rising ESD events (IEC 61000-4-2) to <165 V while adding <1 pF parasitic capacitance - preserving signal integrity up to 10 MHz. |
Use Scenario: Protecting half-bridge MOSFET gates and bootstrap circuitry from Miller-induced voltage spikes during BLDC motor commutation. IC Role / Device Role / Timing Role: Secondary-level TVS on low-voltage auxiliary rails (e.g., 15 V gate drive supply), coordinated with primary input TVS. Use Value: Prevents false turn-on and gate oxide stress by limiting transient excursions to ≤165 V, extending MOSFET lifetime in white goods inverters. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ120A-E3/52 | Same VWM (102 V), VC (165 V), and PPPM (600 W); SMA package (DO-214AC), higher RθJA (140 °C/W) | Larger footprint and lower thermal efficiency; suitable where board space allows but thermal derating is less critical | Select when legacy SMA layout exists or cost optimization outweighs thermal performance needs |
| 1.5SMC120AHE3_A/H | Same electrical specs; SMC (DO-214AB) package, 1.5 kW rating, higher IPPM (10.5 A), RθJA = 60 °C/W | Higher surge capacity and better thermal dissipation; overqualified for 600 W use cases but adds cost and size | Choose when future-proofing against higher-energy threats or extended duty cycles is required |
Compared with P6SMB120AHM3_B/H, SMAJ120A-E3/52 offers identical clamping but reduced thermal capability due to larger package thermal resistance, while 1.5SMC120AHE3_A/H delivers superior surge handling at increased board area and cost - making P6SMB120AHM3_B/H the optimal balance of AEC-Q101 compliance, SMB footprint, and 600 W protection for space-constrained automotive and industrial designs.
Availability
P6SMB120AHM3_B/H is available at Aetrix Electronics and suitable for automotive ECU protection, industrial power supply input stages, telecom sensor interfaces, and consumer appliance motor driver boards requiring stable component supply with full traceability and lifecycle management.
Supply support for P6SMB120AHM3_B/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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and application-specific performance.
The P6SMB Series belongs to Vishay's TRANSZORB® TVS platform, engineered for robust transient suppression in harsh environments - particularly targeting automotive, industrial, and telecom infrastructure where AEC-Q101 qualification and repeatable clamping are mandatory.
FAQ
What is the clamping voltage of P6SMB120AHM3_B/H at its rated peak pulse current?
The P6SMB120AHM3_B/H has a maximum clamping voltage (VC) of 165 V at its specified peak pulse current (IPPM) of 3.6 A, measured under the standard 10/1000 μs double-exponential waveform. This value is guaranteed across the full operating temperature range and ensures downstream components remain within safe voltage limits during transient events. The P6SMB120AHM3_B/H maintains this clamping performance with low incremental surge resistance, minimizing voltage overshoot beyond VC.
Is P6SMB120AHM3_B/H qualified for automotive applications?
Yes, P6SMB120AHM3_B/H is AEC-Q101 qualified, as confirmed by the "_B/H" suffix in its ordering code and Vishay's official documentation. It is manufactured with halogen-free, RoHS-compliant materials (HM3 grade) and tested to automotive reliability standards including temperature cycling, humidity bias, and mechanical shock. The P6SMB120AHM3_B/H is approved for use in engine control units, body control modules, and ADAS sensor interfaces where sustained operation at 150 °C junction temperature is required.
What does the "HM3_B/H" suffix indicate for P6SMB120AHM3_B/H?
The "HM3" portion denotes halogen-free, RoHS-compliant commercial-grade construction with JESD 201 Class 2 whisker resistance; "_B" indicates AEC-Q101 qualification for the 6.8 V to 220 V voltage range; and "/H" specifies packaging in 7" diameter plastic tape and reel (750 units per reel). Together, P6SMB120AHM3_B/H identifies a fully automotive-qualified, environmentally compliant, surface-mount TVS diode ready for high-volume SMT assembly. This exact suffix combination is verified in Vishay's official ordering information table.
How does the thermal performance of P6SMB120AHM3_B/H compare to larger-package alternatives?
P6SMB120AHM3_B/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 - optimized for compact layouts. In comparison, the SMC-packaged 1.5SMC120AHE3_A/H offers RθJA = 60 °C/W but occupies ~2.5× more board area. The P6SMB120AHM3_B/H achieves best-in-class power density for SMB footprints, enabling effective thermal management without sacrificing PCB real estate in space-constrained automotive and industrial modules.
Can P6SMB120AHM3_B/H be used in bidirectional configurations?
No, P6SMB120AHM3_B/H is a unidirectional TVS diode, as indicated by the "A" suffix (not "CA") and presence of cathode band marking. Bidirectional variants such as P6SMB120CAHM3_B/H exist but differ in construction and electrical symmetry. Using P6SMB120AHM3_B/H in bidirectional signal paths would result in forward conduction during negative transients, potentially damaging the device or failing to suppress. Always match polarity: P6SMB120AHM3_B/H for DC rails with defined ground reference; CA versions for AC or floating lines.
P6SMB120AHM3_B/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- P6SMB, TransZorb®
- Packaging:
- Bulk
- 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/H FAQ
1.How can I place an order for P6SMB120AHM3_B/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB120AHM3_B/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_B/H reliable?
The price and inventory of P6SMB120AHM3_B/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_B/H is usually 5 days.
3.What payment methods are accepted for P6SMB120AHM3_B/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB120AHM3_B/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB120AHM3_B/H?
P6SMB120AHM3_B/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB120AHM3_B/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_B/H?
For technical support, including P6SMB120AHM3_B/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB120AHM3_B/H requirements.
6.How does Aetrix verify that P6SMB120AHM3_B/H is sourced from the original manufacturer or authorized distributors?
All P6SMB120AHM3_B/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_B/H meets industry standards.
7.What is the process for return or replacement of P6SMB120AHM3_B/H?
All P6SMB120AHM3_B/H units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB120AHM3_B/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_B/H part is unused and in its original packaging.
Return procedure for P6SMB120AHM3_B/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB120AHM3_B/H Tags
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