My Inquiry
My Account
Vishay General Semiconductor - Diodes Division P6SMB120CAHM3_B/H
- Part No.:
- P6SMB120CAHM3_B/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB120CAHM3_B/H.pdf
- Description:
- 600W,120V 5%,BIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:7,064
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
P6SMB120CAHM3_B/H from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the P6SMB series, designed for clamping voltage transients on signal and power lines. It features a 120 V standoff voltage (VWM), 137 V maximum clamping voltage (VC) at 3.6 A peak pulse current (IPPM), and 600 W peak pulse power capability with a 10/1000 μs waveform - used to protect MOSFETs, ICs, and sensor interfaces in industrial and automotive electronics.
For engineers reviewing the P6SMB120CAHM3_B/H datasheet, P6SMB120CAHM3_B/H pinout, P6SMB120CAHM3_B/H application, or P6SMB120CAHM3_B/H equivalent, key selection criteria include bidirectional transient suppression capability, AEC-Q101 qualification status, SMB (DO-214AA) package compatibility, and clamping performance under repetitive surge conditions.
Technical Context
The P6SMB120CAHM3_B/H operates as a bidirectional avalanche diode, symmetrically clamping positive and negative transients above its breakdown voltage range of 114–126 V (VBR at 1 mA). Its low incremental surge resistance ensures stable clamping during fast-rising ESD or lightning-induced surges.
Designed for surface-mount assembly on PCBs with 0.2" × 0.2" copper pads per terminal, it delivers 600 W peak pulse power handling with 0.01% duty cycle, thermal resistance of 100 °C/W (junction-to-ambient), and operates across -65 °C to +150 °C junction temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 102 V - Maximum continuous reverse working voltage before clamping begins; defines safe operating margin below breakdown. |
| VBR (Breakdown Voltage) | 114–126 V at 1 mA - Confirmed avalanche onset range; ensures predictable turn-on during overvoltage events. |
| VC (Clamping Voltage) | 137 V at IPPM = 3.6 A - Peak voltage seen by protected circuit during 10/1000 μs surge; critical for downstream component survivability. |
| PPPM (Peak Pulse Power) | 600 W - Sustained transient energy absorption capability under standardized 10/1000 μs waveform; enables robust protection in harsh environments. |
| Package | SMB (DO-214AA) - Low-profile, surface-mount package with matte tin-plated leads; supports automated placement and meets J-STD-002 solderability. |
| AEC-Q101 Qualified | Yes - Validated for automotive-grade reliability including temperature cycling, humidity bias, and mechanical shock per AEC-Q101 standard. |
| Operating Temperature | -65 °C to +150 °C - Enables deployment in under-hood, industrial control, and outdoor telecom equipment without derating concerns. |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case with UL 94 V-0 flammability rating; dimensions 4.57 mm × 3.94 mm × 2.20 mm (L × W × H); cathode band not marked (bidirectional device).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bidirectional terminal pair | No polarity marking; either terminal serves as anode or cathode depending on transient polarity - enables single-device protection of AC or differential lines. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 μs) | Enables protection against high-energy transients such as ISO 7637-2 Load Dump pulses in 12 V automotive systems. |
| AEC-Q101 qualified (HM3_B suffix) | Validated for automotive use including engine control units, body electronics, and ADAS sensor interfaces requiring long-term reliability. |
| Low clamping ratio (VC/VBR ≈ 1.14) | Minimizes overvoltage stress on protected ICs - critical for safeguarding 3.3 V or 5 V logic interfaces connected to external connectors. |
| MSL Level 1 (260 °C peak reflow) | Supports standard lead-free reflow processes without preconditioning; eliminates moisture-related popcorning risk during assembly. |
| Halogen-free & RoHS-compliant (HM3) | Meets environmental compliance requirements for global OEMs and industrial equipment manufacturers targeting EU, China, and Japan markets. |
Applications
| Automotive Sensor Interface Protection | Industrial PLC I/O Module Protection |
|---|---|
|
Use Scenario: Protecting CAN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump and inductive switching transients in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional TVS clamp placed directly at connector entry point to shunt surge energy before reaching signal conditioning circuitry. Use Value: Prevents latch-up or permanent damage to 5 V tolerant transceivers and ADC front-ends during 12 V system transients up to 600 W. |
Use Scenario: Safeguarding digital input/output channels of programmable logic controllers exposed to relay coil flyback and motor drive noise in factory automation. IC Role / Device Role / Timing Role: Standoff-clamp TVS mounted adjacent to terminal blocks to suppress ±1 kV EFT bursts and 10/1000 μs surges per IEC 61000-4-4/5. Use Value: Maintains functional integrity of 24 V DC I/O circuits without requiring additional filtering or isolation components. |
| Telecom Line Card Surge Protection | Consumer Appliance Motor Drive Protection |
|
Use Scenario: Shielding Ethernet PHY interfaces and PoE injectors from lightning-induced surges entering via RJ45 ports in base station line cards. IC Role / Device Role / Timing Role: Primary-level bidirectional TVS placed before common-mode chokes to absorb common-mode transients before differential receivers. Use Value: Limits induced common-mode voltage to <137 V, preserving IEEE 802.3af/at compliance and preventing PHY reset or damage. |
Use Scenario: Clamping voltage spikes generated by brushed DC motor commutation in smart home appliances (e.g., vacuum cleaners, washing machines). IC Role / Device Role / Timing Role: TVS diode installed across motor terminals to suppress >100 V spikes before they couple into MCU power rails or Hall-effect sensors. Use Value: Eliminates firmware crashes and sensor misreads caused by radiated transients, improving product field reliability and EMC test pass rate. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ120CA | Same VWM (102 V), lower PPPM (400 W), SMA package (smaller footprint, higher RθJA) | Limited to lower-energy transients; unsuitable for ISO 7637-2 Pulse 5a load dump simulation | Select when board space is constrained and surge energy remains ≤400 W. |
| SMCJ120CA | Same VWM (102 V), higher PPPM (1500 W), larger SMC package (DO-214AB) | Requires larger pad layout and higher mounting torque; better suited for 24 V industrial systems | Choose for enhanced surge margin where PCB real estate allows SMC footprint. |
Compared with SMAJ120CA and SMCJ120CA, the P6SMB120CAHM3_B/H provides optimal balance of 600 W surge capacity, SMB footprint compatibility, and AEC-Q101 qualification - making it preferred for space-constrained automotive and industrial modules needing certified reliability.
Availability
P6SMB120CAHM3_B/H is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O protection, and telecom line card surge suppression requiring stable component supply, halogen-free compliance, and AEC-Q101 validation.
Supply support for P6SMB120CAHM3_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, rectifiers, MOSFETs, and passive components with emphasis on high-reliability and automotive-grade solutions.
The P6SMB Series is engineered for robust transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where consistent clamping performance and long-term stability under thermal stress are mandatory.
FAQ
What does the "CA" suffix indicate in P6SMB120CAHM3_B/H?
The "CA" suffix denotes a bidirectional configuration: the P6SMB120CAHM3_B/H conducts and clamps symmetrically for both positive and negative transients, unlike unidirectional "A" variants. This makes it ideal for protecting AC-coupled lines, differential buses like CAN or RS-485, and any interface where polarity reversal is possible. The device has no polarity marking, confirming its bidirectional nature.
Is P6SMB120CAHM3_B/H suitable for automotive applications?
Yes - the "HM3_B" suffix confirms P6SMB120CAHM3_B/H is halogen-free, RoHS-compliant, and AEC-Q101 qualified. It has passed stress tests including temperature cycling, high-temperature operating life, and mechanical shock, meeting requirements for under-hood and chassis-mounted modules. Its 102 V VWM and 137 V VC align with 12 V automotive system protection needs.
How does the SMB package of P6SMB120CAHM3_B/H compare to SMA or SMC packages?
The SMB (DO-214AA) package of P6SMB120CAHM3_B/H offers a 4.57 mm × 3.94 mm footprint - smaller than SMC (DO-214AB) but larger than SMA (DO-214AC), striking a balance between power handling and board space. With 600 W PPPM and 100 °C/W RθJA, it delivers higher surge capability than SMAJ-series parts while maintaining compatibility with standard pick-and-place equipment calibrated for SMB reels.
What is the maximum clamping voltage of P6SMB120CAHM3_B/H under surge conditions?
The P6SMB120CAHM3_B/H has a maximum clamping voltage (VC) of 137 V at 3.6 A peak pulse current (IPPM), measured using the standardized 10/1000 μs waveform. This value is guaranteed across the full operating temperature range and reflects worst-case behavior after multiple surge events - ensuring protected downstream ICs see no more than 137 V during transient suppression.
Can P6SMB120CAHM3_B/H replace P6SMB120A in a design?
No - P6SMB120A is unidirectional, while P6SMB120CAHM3_B/H is bidirectional. Substituting them requires verifying circuit polarity: unidirectional devices require correct cathode orientation and cannot protect negative transients. If the original design uses a unidirectional TVS on a DC line with known polarity, P6SMB120CAHM3_B/H may be used only if the layout accommodates symmetrical placement and no polarity-dependent biasing exists.
P6SMB120CAHM3_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:
- -
- Bidirectional Channels:
- 1
- 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)
P6SMB120CAHM3_B/H FAQ
1.How can I place an order for P6SMB120CAHM3_B/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB120CAHM3_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 P6SMB120CAHM3_B/H reliable?
The price and inventory of P6SMB120CAHM3_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 P6SMB120CAHM3_B/H is usually 5 days.
3.What payment methods are accepted for P6SMB120CAHM3_B/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB120CAHM3_B/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB120CAHM3_B/H?
P6SMB120CAHM3_B/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB120CAHM3_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 P6SMB120CAHM3_B/H?
For technical support, including P6SMB120CAHM3_B/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB120CAHM3_B/H requirements.
6.How does Aetrix verify that P6SMB120CAHM3_B/H is sourced from the original manufacturer or authorized distributors?
All P6SMB120CAHM3_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 P6SMB120CAHM3_B/H meets industry standards.
7.What is the process for return or replacement of P6SMB120CAHM3_B/H?
All P6SMB120CAHM3_B/H units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB120CAHM3_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 P6SMB120CAHM3_B/H part is unused and in its original packaging.
Return procedure for P6SMB120CAHM3_B/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB120CAHM3_B/H Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
Tech Hub
Comparator circuit design covering voltage thresholds, input limits, open-collector outputs, LM393 wiring, op-amp differences, hysteresis, timing, window detection and practical fault diagnosis.
Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
