My Inquiry
My Account
Vishay General Semiconductor - Diodes Division P6SMB18CAHM3/H
- Part No.:
- P6SMB18CAHM3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB18CAHM3/H.pdf
- Description:
- TVS DIODE 15.3VWM 25.2VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,982
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
P6SMB18CAHM3/H from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping voltage transients on signal and power lines. It features a 15.3 V stand-off voltage (VWM), 17.1–18.9 V breakdown voltage (VBR) at 1 mA test current, 25.2 V maximum clamping voltage (VC) at 23.8 A peak pulse current (IPPM), and 600 W peak pulse power rating with 10/1000 μs waveform - used to protect MOSFETs, ICs, and sensor interfaces in automotive and industrial systems.
For engineers reviewing the P6SMB18CAHM3/H datasheet, P6SMB18CAHM3/H pinout, P6SMB18CAHM3/H application, or P6SMB18CAHM3/H equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, thermal resistance (RθJA = 100 °C/W), junction temperature range (−65 to +150 °C), and halogen-free RoHS-compliant construction per JESD201 Class 2 whisker testing.
Technical Context
The P6SMB18CAHM3/H operates as a bidirectional avalanche diode, symmetrically clamping transient overvoltages in both polarities without polarity marking. Its glass-passivated junction ensures stable breakdown behavior and low leakage (<1.0 μA at VWM), while the low incremental surge resistance enables rapid energy diversion during ESD or lightning-induced surges.
Designed for surface-mount automated assembly, it meets MSL Level 1 per J-STD-020 with 260 °C lead-free reflow peak, and its SMB package provides mechanical robustness with UL 94 V-0 molding compound. The device is rated for repetitive 0.01% duty cycle pulses and derates linearly above 25 °C ambient per Fig. 2 of the datasheet.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 15.3 V - Maximum continuous reverse voltage before clamping begins; defines safe operating margin below breakdown. |
| VBR (Breakdown) | 17.1–18.9 V at IT = 1 mA - Confirmed avalanche onset range; ensures predictable turn-on during transients. |
| VC (Clamping) | 25.2 V at IPPM = 23.8 A - Peak voltage seen by protected circuit under 600 W 10/1000 μs surge; determines stress on downstream components. |
| PPPM | 600 W - Peak pulse power handling with standard 10/1000 μs waveform; validates protection level against IEC 61000-4-5 surges. |
| TJ max. | +150 °C - Maximum junction temperature; supports operation in under-hood automotive and high-ambient industrial environments. |
| RθJA | 100 °C/W - Thermal resistance junction-to-ambient on standard 0.2" × 0.2" copper pads; informs board-level thermal design requirements. |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD per AEC specification; suffix HM3 denotes qualification. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, halogen-free, matte tin-plated terminals, compliant with J-STD-002 and JESD22-B102 solderability standards. Bidirectional configuration has no polarity marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Transient conduction path | Both terminals function identically; conducts bidirectionally when voltage exceeds ±VBR - no cathode band or polarity identification required. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without external polarity management. |
| 600 W peak pulse power | Withstands IEC 61000-4-5 Level 3 (1 kV line-to-line, 2 kV line-to-ground) surge events without degradation. |
| AEC-Q101 qualified (HM3 suffix) | Validated for automotive powertrain, body electronics, and ADAS modules requiring zero-failure field reliability. |
| Low clamping ratio (VC/VBR ≈ 1.44) | Minimizes overvoltage stress on protected ICs - e.g., keeps microcontroller I/O pins below absolute maximum ratings during transients. |
| MSL Level 1, 260 °C reflow | Supports standard lead-free SMT assembly without moisture sensitivity concerns or baking requirements. |
Applications
| Automotive Sensor Interface Protection | Industrial CAN Bus Line Protection |
|---|---|
|
Use Scenario: Protecting analog output lines of pressure/temperature sensors in engine control units exposed to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional TVS clamping transient spikes on differential sensor outputs before they reach ADC inputs. Use Value: Prevents sensor signal corruption and microcontroller latch-up during 12 V system switching events, enabled by 15.3 V VWM and 25.2 V VC. |
Use Scenario: Safeguarding CANH/CANL lines in factory automation gateways subjected to EFT bursts and cable discharge events. IC Role / Device Role / Timing Role: Low-capacitance transient suppressor placed directly at connector entry point to shunt fast-rising noise. Use Value: Maintains CAN signal integrity up to 1 Mbps by limiting line voltage excursions to ≤25.2 V without adding propagation delay or signal distortion. |
| Consumer Power Adapter Output Clamping | Telecom DSL Line Surge Suppression |
|
Use Scenario: Secondary-side overvoltage protection on 12 V/24 V wall adapters powering IoT hubs and smart home controllers. IC Role / Device Role / Timing Role: Standoff-rated TVS absorbing inductive kickback from DC-DC converter output filter inductors. Use Value: Eliminates need for additional crowbar circuitry - clamps within nanoseconds at 23.8 A IPPM while dissipating 600 W peak energy. |
Use Scenario: Primary protection for ADSL/VDSL line interface ICs against lightning-induced surges entering via telephone jacks. IC Role / Device Role / Timing Role: First-stage surge diverter on twisted-pair telecom lines, coordinated with GDT secondary protection. Use Value: Withstands repeated 10/1000 μs surges up to 600 W while maintaining <1.0 μA leakage at 15.3 V - preserving line impedance and signal-to-noise ratio. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ18CA | Same VWM (15.3 V), identical SMB package, but lower PPPM (400 W) and higher VC (29.2 V at 13.7 A). | Limited to lower-energy transients; unsuitable for IEC 61000-4-5 Level 4 or automotive load dump. | Select only if system-level surge testing confirms 400 W sufficiency and layout allows higher clamping voltage margin. |
| 1.5SMC18CA | Higher power rating (1500 W), larger SMC (DO-214AB) package, same VWM/VC specs, but incompatible footprint and higher RθJA (60 °C/W). | Requires PCB redesign; better for high-repetition surges but over-specified for space-constrained consumer designs. | Choose when sustained surge repetition or higher thermal mass is required - not a drop-in replacement for P6SMB18CAHM3/H. |
Compared with SMAJ18CA and 1.5SMC18CA, P6SMB18CAHM3/H uniquely balances 600 W surge capability, SMB footprint compatibility, AEC-Q101 qualification, and 25.2 V clamping - making it optimal for automotive and industrial SMT designs where board area, reliability, and standardized testing alignment are critical.
Availability
P6SMB18CAHM3/H is available at Aetrix Electronics and suitable for automotive sensor protection, industrial CAN bus hardening, and telecom DSL line surge suppression requiring stable component supply across production lifecycles.
Supply support for P6SMB18CAHM3/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, efficiency, and application-specific performance.
The P6SMB Series targets cost-sensitive, high-volume transient protection needs in automotive, industrial, and communications equipment - delivering AEC-Q101-qualified robustness in compact SMB packaging without sacrificing clamping precision or surge endurance.
FAQ
What is the clamping voltage of P6SMB18CAHM3/H at its rated peak pulse current?
The P6SMB18CAHM3/H has a maximum clamping voltage (VC) of 25.2 V when subjected to its rated peak pulse current (IPPM) of 23.8 A using the standard 10/1000 μs waveform. This value is measured per Figure 1 in the Vishay datasheet 88370 and defines the upper voltage limit imposed on protected circuits during surge events - critical for ensuring downstream ICs remain within absolute maximum ratings.
Is P6SMB18CAHM3/H suitable for automotive applications?
Yes, P6SMB18CAHM3/H is AEC-Q101 qualified, as confirmed by the "HM3" suffix in its ordering code, indicating full compliance with automotive reliability stress tests including temperature cycling, high-temperature reverse bias, and ESD. It is widely deployed in engine control units, body control modules, and ADAS sensor interfaces where transient immunity and long-term field stability are mandatory.
Does P6SMB18CAHM3/H have polarity markings on the package?
No, P6SMB18CAHM3/H is a bidirectional TVS diode and carries no cathode band or polarity marking. Its symmetrical construction allows installation in either orientation on PCBs - essential for protecting AC-coupled lines, differential buses like CAN or RS-485, or floating sensor outputs without concern for terminal assignment.
What is the maximum operating junction temperature for P6SMB18CAHM3/H?
The maximum operating junction temperature (TJ max.) for P6SMB18CAHM3/H is +150 °C, as specified in the Absolute Maximum Ratings table of Vishay document 88370. This rating enables reliable operation in under-hood automotive environments and high-ambient industrial enclosures, provided board-level thermal design maintains junction temperature below this limit under worst-case power dissipation.
How does the "HM3" suffix in P6SMB18CAHM3/H affect its compliance status?
The "HM3" suffix in P6SMB18CAHM3/H indicates halogen-free, RoHS-compliant construction with AEC-Q101 qualification - distinguishing it from commercial-grade "M3" variants. This suffix confirms compliance with JESD201 Class 2 whisker resistance, MSL Level 1 moisture sensitivity, and automotive-grade reliability testing, making it suitable for safety-critical and long-lifecycle deployments.
P6SMB18CAHM3/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:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 15.3V
- Voltage - Breakdown (Min):
- 17.1V
- Voltage - Clamping (Max) @ Ipp:
- 25.2V
- Current - Peak Pulse (10/1000µs):
- 23.8A
- 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)
P6SMB18CAHM3/H FAQ
1.How can I place an order for P6SMB18CAHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB18CAHM3/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 P6SMB18CAHM3/H reliable?
The price and inventory of P6SMB18CAHM3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB18CAHM3/H is usually 5 days.
3.What payment methods are accepted for P6SMB18CAHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB18CAHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB18CAHM3/H?
P6SMB18CAHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB18CAHM3/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 P6SMB18CAHM3/H?
For technical support, including P6SMB18CAHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB18CAHM3/H requirements.
6.How does Aetrix verify that P6SMB18CAHM3/H is sourced from the original manufacturer or authorized distributors?
All P6SMB18CAHM3/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 P6SMB18CAHM3/H meets industry standards.
7.What is the process for return or replacement of P6SMB18CAHM3/H?
All P6SMB18CAHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB18CAHM3/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 P6SMB18CAHM3/H part is unused and in its original packaging.
Return procedure for P6SMB18CAHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB18CAHM3/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
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…
