My Inquiry
My Account
Vishay General Semiconductor - Diodes Division P6SMB12CAHM3_B/I
- Part No.:
- P6SMB12CAHM3_B/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB12CAHM3_B/I.pdf
- Description:
- 600W,12V 5%,BIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:8,986
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
P6SMB12CAHM3_B/I from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping ESD and surge transients on signal/power lines. It features 12 V standoff voltage (VWM), 16.7 V maximum clamping voltage (VC) at 35.9 A peak pulse current (IPPM), and 600 W peak pulse power (PPPM) with 10/1000 μs waveform - deployed in automotive sensor interfaces, industrial I/O protection, and telecom line receivers.
For engineers reviewing the P6SMB12CAHM3_B/I datasheet, P6SMB12CAHM3_B/I pinout, P6SMB12CAHM3_B/I application, or P6SMB12CAHM3_B/I equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, MSL Level 1 moisture sensitivity, and compatibility with 0.2" × 0.2" copper pad layouts per JEDEC standards.
Technical Context
This device operates as a voltage-clamped shunt protector: during overvoltage events exceeding its breakdown threshold (VBR min = 11.4 V), it rapidly transitions to low-impedance conduction to divert surge current away from downstream circuitry. Its bidirectional symmetry enables protection of AC-coupled or differential signal paths without polarity constraints.
Thermal design relies on RθJA = 100 °C/W and RθJL = 20 °C/W, with derating above TA = 25 °C per Fig. 2; junction temperature must remain ≤150 °C under repetitive 0.01% duty cycle pulses. The glass-passivated junction ensures stable VBR drift (0.078 %/°C) and long-term reliability in harsh environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 10.2 V - maximum continuous reverse voltage before significant leakage; defines operating margin below clamping onset |
| VBR (Breakdown Voltage) | 11.4 V to 12.6 V at 1 mA - precise voltage threshold where avalanche conduction begins; ensures predictable turn-on |
| VC (Clamping Voltage) | 16.7 V at 35.9 A IPPM - maximum voltage seen by protected circuit during worst-case 10/1000 μs surge; critical for IC survival |
| PPPM (Peak Pulse Power) | 600 W - surge energy handling capacity with 10/1000 μs waveform; validates robustness against IEC 61000-4-5 Level 4 transients |
| ID (Reverse Leakage) | 5.0 μA at VWM - ultra-low leakage preserves signal integrity and battery life in always-on circuits |
| TJ max | 150 °C - maximum junction temperature; supports operation in under-hood automotive and industrial ambient conditions |
| AEC-Q101 Qualified | Yes - certified for automotive electronics per stress test requirements including HTOL, TC, and ESD; suffix HM3_B/I denotes qualification |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, halogen-free, RoHS-compliant, MSL Level 1 (peak reflow 260 °C). Dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H); matte tin-plated leads, solderable per J-STD-002.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (marked end) | Reference node for unidirectional devices | Not applicable - P6SMB12CAHM3_B/I is bidirectional; no polarity marking; terminals are symmetrical |
| Anode | Reference node for unidirectional devices | Not applicable - bidirectional construction eliminates anode/cathode distinction; both terminals function identically |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables protection of AC, differential, or floating signal lines (e.g., RS-485, CAN, audio) without polarity concerns |
| 600 W peak pulse power | Withstands IEC 61000-4-5 4th-level surges (4 kV line-earth, 2 kV line-line) on properly laid out PCBs |
| AEC-Q101 qualification (HM3_B/I) | Validates reliability for automotive applications including ADAS sensors, body control modules, and infotainment interfaces |
| Low clamping ratio (VC/VBR ≈ 1.47) | Minimizes overvoltage stress on protected ICs - e.g., keeps 3.3 V or 5 V logic within safe operating area during transients |
| MSL Level 1 rating | Allows unlimited floor life and standard reflow without baking; simplifies SMT manufacturing and inventory management |
Applications
| Automotive Sensor Protection | Industrial Digital I/O Protection |
|---|---|
Use Scenario: Protecting LIN bus transceivers and analog sensor outputs (e.g., temperature, pressure) from load dump and ISO 7637-2 pulses in vehicle ECUs. IC Role / Device Role / Timing Role: Shunt TVS placed directly at connector interface to clamp transients before they reach sensitive analog front-ends or communication ICs. Use Value: Prevents latch-up or permanent damage to 12 V rail-connected sensors while maintaining <5 μA leakage at 10.2 V standby. |
Use Scenario: Safeguarding PLC digital input channels exposed to inductive kickback from solenoids, relays, and motor drivers. IC Role / Device Role / Timing Role: Bidirectional clamping element across input terminals to absorb ±1 kV/500 A transients defined in IEC 61000-4-4. Use Value: Enables reliable 24 V DC input operation with 16.7 V clamping - well below typical 30 V input stage ratings - reducing need for additional series impedance. |
| Telecom Line Receiver Protection | Consumer USB/Display Interface Protection |
Use Scenario: Shielding Ethernet PHY magnetics secondary side and xDSL line drivers from lightning-induced surges and AC power cross-talk. IC Role / Device Role / Timing Role: Primary transient suppressor on balanced twisted-pair lines, placed after common-mode chokes but before receiver ICs. Use Value: 600 W rating and 16.7 V VC ensure compliance with GR-1089-CORE Level 3 surge immunity without degrading signal integrity at 100 MHz. |
Use Scenario: Guarding HDMI, USB 2.0, or DisplayPort hot-swap ports against ESD (±15 kV contact) and cable discharge events. IC Role / Device Role / Timing Role: Low-capacitance (<100 pF) bidirectional TVS mounted at port entry to shunt fast transients before reaching SerDes lanes. Use Value: Sub-17 V clamping prevents damage to 3.3 V tolerant PHYs; AEC-Q101 grade adds robustness for premium consumer devices requiring automotive-grade reliability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ12CA | Same VWM (10.2 V), VC (19.9 V), but lower PPPM (400 W); SMA package (smaller footprint, higher RθJA) | Limited to lower-energy transients (IEC 61000-4-2 only); unsuitable for IEC 61000-4-5 Level 3+ or automotive load dump | Select when board space is constrained and surge energy is ≤400 W; verify thermal performance with RθJA = 150 °C/W |
| SMCJ12CA | Same VWM (10.2 V), lower VC (17.0 V), higher PPPM (1500 W); larger SMC package (DO-214AB) | Supports higher surge currents (100 A IPPM); requires larger PCB pads and more layout area | Choose for mission-critical systems needing >600 W margin or extended lifetime under repetitive surges; confirm pad layout fits DO-214AB dimensions |
Compared with SMAJ12CA, P6SMB12CAHM3_B/I delivers 50% higher surge power headroom in the same SMB footprint; versus SMCJ12CA, it trades 250 W peak power for 30% smaller board area and AEC-Q101 qualification - making it optimal for space-constrained automotive and industrial modules.
Availability
P6SMB12CAHM3_B/I is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, and telecom line receiver circuits requiring stable component supply, AEC-Q101 traceability, and consistent SMB package form factor.
Supply support for P6SMB12CAHM3_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, MOSFETs, optoelectronics, and passive components with emphasis on reliability, efficiency, and application-specific optimization.
The P6SMB Series targets high-reliability transient suppression in automotive, industrial, and telecom infrastructure - engineered for robust clamping, low leakage, and seamless integration into automated SMT lines.
FAQ
What does the "CA" suffix mean in P6SMB12CAHM3_B/I?
The "CA" suffix in P6SMB12CAHM3_B/I indicates a bidirectional configuration - meaning the device provides symmetrical transient suppression for both polarities of voltage transients. This is essential for protecting AC-coupled lines, differential buses like RS-485 or CAN, and floating inputs where polarity reversal may occur. Unlike unidirectional "A" variants, P6SMB12CAHM3_B/I has no cathode/anode distinction and no band marking.
Is P6SMB12CAHM3_B/I suitable for automotive applications?
Yes, P6SMB12CAHM3_B/I is AEC-Q101 qualified (denoted by the "HM3_B/I" suffix), having passed stress tests including high-temperature operating life, temperature cycling, and ESD. It is explicitly rated for under-hood and cabin applications such as sensor interfaces, body control modules, and infotainment I/O protection - with guaranteed operation from –65 °C to +150 °C junction temperature.
What is the maximum clamping voltage of P6SMB12CAHM3_B/I under surge conditions?
The maximum clamping voltage (VC) of P6SMB12CAHM3_B/I is 16.7 V at 35.9 A peak pulse current (IPPM) with a 10/1000 μs waveform. This value is measured per industry-standard surge testing and represents the highest voltage imposed on protected circuitry during worst-case transient events - ensuring compatibility with 12 V systems and safeguarding 3.3 V or 5 V logic interfaces downstream.
How does the SMB (DO-214AA) package of P6SMB12CAHM3_B/I compare to SMA or SMC packages?
The SMB (DO-214AA) package of P6SMB12CAHM3_B/I offers a balance of surge capability and compact size: smaller than SMC (DO-214AB) but higher power rating than SMA (DO-214AC). At 4.57 mm × 3.94 mm, it supports 600 W PPPM with RθJA = 100 °C/W - enabling higher power density than SMA while fitting tighter layouts than SMC. Its MSL Level 1 rating also simplifies assembly vs. moisture-sensitive alternatives.
What is the reverse leakage current specification for P6SMB12CAHM3_B/I at its stand-off voltage?
P6SMB12CAHM3_B/I exhibits a maximum reverse leakage current (ID) of 5.0 μA at its stand-off voltage (VWM) of 10.2 V, measured at TA = 25 °C. This ultra-low leakage preserves signal fidelity in high-impedance sensor circuits and minimizes quiescent power loss in battery-powered or always-on systems - a critical parameter for precision analog and low-power IoT designs using P6SMB12CAHM3_B/I.
P6SMB12CAHM3_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:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 10.2V
- Voltage - Breakdown (Min):
- 11.4V
- Voltage - Clamping (Max) @ Ipp:
- 16.7V
- Current - Peak Pulse (10/1000µs):
- 35.9A
- 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)
P6SMB12CAHM3_B/I FAQ
1.How can I place an order for P6SMB12CAHM3_B/I through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB12CAHM3_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 P6SMB12CAHM3_B/I reliable?
The price and inventory of P6SMB12CAHM3_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 P6SMB12CAHM3_B/I is usually 5 days.
3.What payment methods are accepted for P6SMB12CAHM3_B/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB12CAHM3_B/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB12CAHM3_B/I?
P6SMB12CAHM3_B/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB12CAHM3_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 P6SMB12CAHM3_B/I?
For technical support, including P6SMB12CAHM3_B/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB12CAHM3_B/I requirements.
6.How does Aetrix verify that P6SMB12CAHM3_B/I is sourced from the original manufacturer or authorized distributors?
All P6SMB12CAHM3_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 P6SMB12CAHM3_B/I meets industry standards.
7.What is the process for return or replacement of P6SMB12CAHM3_B/I?
All P6SMB12CAHM3_B/I units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB12CAHM3_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 P6SMB12CAHM3_B/I part is unused and in its original packaging.
Return procedure for P6SMB12CAHM3_B/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB12CAHM3_B/I 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
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 …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
