My Inquiry
My Account
Vishay General Semiconductor - Diodes Division P6SMB18AHM3_B/H
- Part No.:
- P6SMB18AHM3_B/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB18AHM3_B/H.pdf
- Description:
- 600W,18V 5%,UNIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:4,053
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
P6SMB18AHM3_B/H from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, rated for 18 V standoff voltage (VWM = 15.3 V), 25.2 V clamping voltage at 23.8 A peak pulse current, and 600 W peak pulse power with 10/1000 μs waveform. It protects MOSFETs, ICs, and sensor signal lines against inductive switching transients and ESD in automotive and industrial power supplies.
For engineers reviewing the P6SMB18AHM3_B/H datasheet, P6SMB18AHM3_B/H pinout, P6SMB18AHM3_B/H application, or P6SMB18AHM3_B/H equivalent, this AEC-Q101 qualified, halogen-free, RoHS-compliant TVS offers verified clamping performance, low incremental surge resistance, and MSL Level 1 moisture sensitivity - critical for high-reliability automotive ECUs and industrial motor drives.
Technical Context
This unidirectional TVS operates by avalanche breakdown above its reverse standoff voltage (VWM = 15.3 V), clamping transient voltages to ≤25.2 V at 23.8 A (10/1000 μs). Its glass-passivated junction ensures stable breakdown characteristics and fast response time (<1 ns), while the SMB package enables automated placement on PCBs with minimal footprint.
Designed for repetitive surge events at 0.01% duty cycle, it sustains 600 W peak pulse power and handles 100 A non-repetitive forward surge (8.3 ms half-sine), with thermal resistance RθJA = 100 °C/W and maximum junction temperature of +150 °C - enabling operation in under-hood automotive environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 15.3 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR (Breakdown) | 17.1–18.9 V at 1 mA - Verified avalanche onset range ensuring predictable turn-on |
| VC (Clamping) | 25.2 V at IPPM = 23.8 A - Limits transient voltage seen by protected downstream circuitry |
| PPPM | 600 W - Peak pulse power handling capability per 10/1000 μs waveform per JEDEC standards |
| IFSM | 100 A - Withstands 8.3 ms single half-sine surge, critical for relay/coil turn-off protection |
| TJ max. | +150 °C - Enables use in high-temperature automotive and industrial ambient conditions |
| Package | SMB (DO-214AA) - Standardized surface-mount outline with 5.59 mm × 4.06 mm footprint and J-STD-002 solderability |
Pinout & Package
SMB (DO-214AA) package: molded plastic case with matte tin-plated leads, 0.220" × 0.130" body, cathode band marking on unidirectional devices. Complies with UL 94 V-0 flammability rating and JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction path / low-side reference | Connected to ground or low-voltage rail in unidirectional clamp configuration |
| Cathode | Transient voltage sensing / clamping node | Connected to protected line (e.g., 12 V supply rail or sensor input); band denotes cathode end |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per stress test plan |
| Halogen-free & RoHS-compliant | Meets EU Directive 2011/65/EU and IPC-1752A material declaration requirements for green manufacturing |
| MSL Level 1 (260 °C peak) | Zero floor life limitation - can be mounted without baking or dry pack handling prior to reflow |
| 600 W peak pulse power | Handles ISO 7637-2 Pulse 1/2a/5a transients in 12 V automotive systems without degradation |
| Low clamping ratio (VC/VBR ≈ 1.4) | Minimizes overvoltage stress on protected ICs compared to higher-ratio TVS devices |
Applications
| Automotive Power Supply Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Suppressing load-dump and inductive kickback transients on 12 V battery rails in engine control units and body electronics modules. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery input and DC-DC converter input stage to clamp surges before regulation. Use Value: Prevents damage to LDOs and microcontrollers during alternator load dump (ISO 7637-2 Pulse 5a, up to 60 V/100 ms). |
Use Scenario: Protecting analog front-end inputs of pressure, temperature, and position sensors in PLC I/O modules. IC Role / Device Role / Timing Role: Clamping ESD and cable discharge events on 4–20 mA or 0–10 V sensor signal lines before ADC input. Use Value: Maintains signal integrity under IEC 61000-4-2 ±8 kV contact discharge without latch-up or parametric shift. |
| Consumer Power Adapter Input Stage | MOSFET Gate Driver Protection |
Use Scenario: Safeguarding primary-side controller ICs in offline AC-DC adapters against lightning-induced surges on mains input. IC Role / Device Role / Timing Role: Secondary-side TVS across bulk capacitor output to absorb reflected transients from MOV failure or line switching. Use Value: Limits voltage overshoot to <25.2 V during 600 W surge events, preventing overvoltage shutdown of PWM controllers. |
Use Scenario: Shielding high-side and low-side gate drivers in BLDC motor inverters from shoot-through induced voltage spikes. IC Role / Device Role / Timing Role: Mounted directly across gate-source terminals of 600 V Si MOSFETs to clamp Miller-induced dv/dt spikes. Use Value: Ensures gate oxide integrity by limiting VGS to ≤25.2 V during 100 ns rise-time transients, avoiding unintended turn-on. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ18A-E3/5B | Same VWM (15.3 V), identical SMB package, but lower PPPM = 400 W and higher VC = 29.2 V at 13.7 A | Not AEC-Q101 qualified; limited to commercial-grade consumer/industrial use | Select when cost sensitivity outweighs automotive qualification and higher clamping voltage is acceptable |
| 1.5SMC18A | Same electrical specs (VWM = 15.3 V, VC = 25.2 V), but larger SMC (DO-214AB) package (7.11 mm × 6.22 mm) | Higher thermal mass allows >600 W short-duration pulses but requires larger PCB area | Choose when board space permits and enhanced thermal robustness for infrequent high-energy surges is needed |
Compared with SMAJ18A-E3/5B and 1.5SMC18A, P6SMB18AHM3_B/H delivers AEC-Q101 assurance in the smallest standardized footprint while maintaining identical clamping performance - making it optimal for space-constrained, safety-critical automotive modules where qualification and size are non-negotiable.
Availability
P6SMB18AHM3_B/H is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor interfaces, and consumer power adapter designs requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for P6SMB18AHM3_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, TVS devices, and optoelectronics with emphasis on reliability, efficiency, and application-specific optimization.
The P6SMB Series targets high-energy transient suppression in automotive, industrial, and telecom infrastructure, designed specifically to meet AEC-Q101, ISO 7637-2, and IEC 61000-4-5 compliance with standardized SMB packaging for automated assembly.
FAQ
What is the clamping voltage of P6SMB18AHM3_B/H at its rated peak pulse current?
The P6SMB18AHM3_B/H has a maximum clamping voltage (VC) of 25.2 V at 23.8 A peak pulse current (IPPM) under 10/1000 μs waveform conditions. This value is measured per JEDEC standard test methods and guarantees that protected circuitry will not experience voltage exceeding 25.2 V during specified surge events. The P6SMB18AHM3_B/H maintains this clamping performance across its full operating temperature range.
Is P6SMB18AHM3_B/H qualified for automotive applications?
Yes, P6SMB18AHM3_B/H is AEC-Q101 qualified, as confirmed by Vishay's ordering code suffix "HM3_B/H", where "HM3" denotes halogen-free, RoHS-compliant, and AEC-Q101 qualified construction. It undergoes rigorous stress testing including temperature cycling, high-temperature reverse bias, and ESD per AEC-Q101 Rev D, making it suitable for under-hood and chassis-mounted automotive modules.
What does the "_B/H" suffix in P6SMB18AHM3_B/H indicate?
The "_B" denotes AEC-Q101 qualification for the P6SMB18A series (applicable to devices from 6.8 V to 220 V), while "/H" specifies 7-inch plastic tape-and-reel packaging with 750 units per reel. This suffix combination confirms both automotive-grade reliability and standard SMT handling compatibility. The P6SMB18AHM3_B/H is shipped in moisture-barrier packaging compliant with MSL Level 1.
How does P6SMB18AHM3_B/H compare to bidirectional TVS diodes like P6SMB18CA?
P6SMB18AHM3_B/H is unidirectional and intended for DC line protection with polarity-sensitive placement (cathode toward supply), whereas P6SMB18CA is bidirectional and used in AC or floating signal paths. The P6SMB18AHM3_B/H has tighter VBR tolerance (17.1–18.9 V vs. 17.1–20.9 V for P6SMB18CA) and supports higher IFSM (100 A vs. N/A for bidirectional), but cannot replace P6SMB18CA in symmetrical surge environments without circuit redesign.
What is the thermal resistance of P6SMB18AHM3_B/H, and how does it affect PCB layout?
The P6SMB18AHM3_B/H has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on minimum recommended 0.2" × 0.2" copper pads per terminal. To maintain TJ ≤ 150 °C under sustained 5.0 W power dissipation, designers must ensure adequate copper area and avoid thermal bottlenecks - the P6SMB18AHM3_B/H relies on PCB copper for heat spreading rather than internal heatsinking.
P6SMB18AHM3_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):
- 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)
P6SMB18AHM3_B/H FAQ
1.How can I place an order for P6SMB18AHM3_B/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB18AHM3_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 P6SMB18AHM3_B/H reliable?
The price and inventory of P6SMB18AHM3_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 P6SMB18AHM3_B/H is usually 5 days.
3.What payment methods are accepted for P6SMB18AHM3_B/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB18AHM3_B/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB18AHM3_B/H?
P6SMB18AHM3_B/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB18AHM3_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 P6SMB18AHM3_B/H?
For technical support, including P6SMB18AHM3_B/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB18AHM3_B/H requirements.
6.How does Aetrix verify that P6SMB18AHM3_B/H is sourced from the original manufacturer or authorized distributors?
All P6SMB18AHM3_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 P6SMB18AHM3_B/H meets industry standards.
7.What is the process for return or replacement of P6SMB18AHM3_B/H?
All P6SMB18AHM3_B/H units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB18AHM3_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 P6SMB18AHM3_B/H part is unused and in its original packaging.
Return procedure for P6SMB18AHM3_B/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB18AHM3_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 …
