My Inquiry
My Account
Vishay General Semiconductor - Diodes Division P6SMB43AHM3_B/I
- Part No.:
- P6SMB43AHM3_B/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB43AHM3_B/I.pdf
- Description:
- 600W,43V 5%,UNIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:6,652
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
P6SMB43AHM3_B/I from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the SMB (DO-214AA) package, designed for clamping voltage transients on power and signal lines. It features a 36.8 V stand-off voltage (VWM), 40.9–45.2 V breakdown voltage (VBR) at 1 mA, 59.3 V maximum clamping voltage (VC) at 10.1 A peak pulse current, and 600 W peak pulse power rating with 10/1000 μs waveform - used to protect MOSFETs, ICs, and sensor interfaces in automotive and industrial power rails.
For engineers reviewing the P6SMB43AHM3_B/I datasheet, P6SMB43AHM3_B/I pinout, P6SMB43AHM3_B/I application, or P6SMB43AHM3_B/I equivalent, this device is selected for robust overvoltage protection where AEC-Q101 qualification, low-profile SMB packaging, and precise clamping performance under repetitive surge conditions are required.
Technical Context
This TVS diode operates as a unidirectional clamping device with cathode-band polarity marking, leveraging a glass-passivated silicon junction for stable avalanche behavior. Its thermal resistance (RθJA = 100 °C/W) and junction temperature range (−65 °C to +150 °C) support operation in high-reliability environments without active cooling.
The device delivers fast response time (<1 ps), low incremental surge resistance, and meets J-STD-020 MSL Level 1 (260 °C peak reflow). It is halogen-free, RoHS-compliant, and AEC-Q101 qualified - indicated by the "HM3" and "_B/I" suffixes denoting halogen-free construction, automotive qualification, and 13″ tape-and-reel delivery.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 36.8 V - Maximum continuous reverse working voltage before conduction begins; defines safe operating margin below clamping threshold. |
| VBR (Breakdown) | 40.9–45.2 V at 1 mA - Verified avalanche onset range; ensures predictable turn-on during transient events. |
| VC (Clamping) | 59.3 V at 10.1 A - Maximum voltage seen across protected circuit during 10/1000 μs surge; limits stress on downstream components. |
| PPPM | 600 W - Peak pulse power handling capability with 10/1000 μs waveform; supports IEC 61000-4-5 Level 4 surge immunity. |
| IPPM | 10.1 A - Peak pulse current corresponding to VC; determines minimum trace width and PCB copper area needed for thermal dissipation. |
| TJ max | +150 °C - Maximum junction temperature; enables use in under-hood automotive and industrial ambient environments. |
| RθJA | 100 °C/W - Junction-to-ambient thermal resistance on standard 0.2″ × 0.2″ copper pads; informs derating above 25 °C ambient. |
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. Cathode identified by band marking; anode is unmarked end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink | Connected to protected line; conducts surge current to ground when VWM exceeded. |
| Anode (unbanded end) | Reference node | Typically tied to system ground or lower-potential rail; completes clamping path during overvoltage event. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and surge endurance - supports under-hood and ADAS applications. |
| Halogen-free & RoHS-compliant (HM3) | Meets global environmental compliance requirements without compromising surge performance or thermal stability. |
| 600 W peak pulse power (10/1000 μs) | Enables single-device protection against IEC 61000-4-5 combination wave surges up to ±1 kV (2 Ω source impedance). |
| Low RθJA (100 °C/W) on minimal copper | Allows effective thermal management using only 5 mm × 5 mm pad layout - reduces PCB area and cost vs. larger packages. |
| Glass-passivated junction | Ensures stable VBR tolerance and long-term reliability under repeated surge stress without parameter drift. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: Protecting 12 V battery-fed ECUs from load dump and alternator switching transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power input and ground to clamp positive-going surges above 36.8 V. Use Value: Limits voltage to ≤59.3 V during 10.1 A transients, preventing damage to LDOs, microcontrollers, and CAN transceivers. |
Use Scenario: Shielding analog sensor outputs (e.g., pressure, temperature) from ESD and cable discharge events. IC Role / Device Role / Timing Role: Low-capacitance TVS connected across differential signal pair or single-ended output to ground. Use Value: Fast <1 ps response preserves signal integrity while suppressing ±15 kV contact ESD per IEC 61000-4-2. |
| Telecom DC Power Input Protection | Consumer Power Adapter Output Clamping |
|
Use Scenario: Safeguarding PoE-powered equipment inputs against induced lightning surges on Ethernet cables. IC Role / Device Role / Timing Role: Primary clamping device on 48 V DC input rail, upstream of DC-DC converter. Use Value: Withstands 600 W pulses without degradation, maintaining system uptime during outdoor installation surges. |
Use Scenario: Preventing overvoltage damage to USB-C PD or legacy 5 V/12 V adapter outputs during fault conditions. IC Role / Device Role / Timing Role: Secondary-side TVS on regulated output to absorb regulator failure or capacitor short transients. Use Value: Clamps output to 59.3 V before downstream devices exceed absolute maximum ratings, enabling fail-safe shutdown. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ43A-E3/5B | Same VWM/VC, but SMA package (DO-214AC); higher RθJA (140 °C/W); non-AEC-Q101. | Limited to commercial-grade applications; requires larger pad layout for equivalent thermal performance. | Select when AEC-Q101 is not required and existing SMA footprint exists. |
| 1.5SMC43AHE3_A/H | Same electrical specs, but SMC (DO-214AB) package; higher PPPM (1500 W); AEC-Q101 qualified; heavier lead finish. | Better surge margin for high-energy threats; larger footprint and height may conflict with space-constrained layouts. | Select when higher energy handling (>600 W) is needed and board space permits SMC package. |
Compared with SMAJ43A-E3/5B, P6SMB43AHM3_B/I offers automotive qualification and superior thermal performance in a smaller SMB footprint; versus 1.5SMC43AHE3_A/H, it trades peak power headroom for compactness and lower profile - ideal where space and AEC-Q101 compliance are prioritized over extreme surge levels.
Availability
P6SMB43AHM3_B/I is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor systems, and telecom power supply designs requiring stable component supply, AEC-Q101 validation, and consistent SMB package compatibility.
Supply support for P6SMB43AHM3_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, rectifiers, MOSFETs, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The P6SMB Series targets high-volume, high-reliability transient suppression in automotive, industrial, and communications infrastructure - engineered for automated assembly, thermal robustness, and repeatable clamping performance across temperature and life cycles.
FAQ
What is the clamping voltage of the P6SMB43AHM3_B/I under a 10/1000 μs surge?
The P6SMB43AHM3_B/I has a maximum clamping voltage (VC) of 59.3 V at 10.1 A peak pulse current with a 10/1000 μs waveform. This value is measured per standard test conditions (TA = 25 °C, mounted on 0.2″ × 0.2″ copper pads) and defines the upper voltage limit imposed on protected circuits during surge events. The P6SMB43AHM3_B/I maintains this clamping performance consistently due to its glass-passivated junction and AEC-Q101-qualified construction.
Is the P6SMB43AHM3_B/I suitable for automotive applications?
Yes, the P6SMB43AHM3_B/I is AEC-Q101 qualified, halogen-free, and RoHS-compliant - explicitly designated for automotive use via the "HM3" and "_B" suffixes. It operates across −65 °C to +150 °C junction temperature, withstands load dump and ISO 7637-2 pulses, and is validated for humidity, temperature cycling, and surge endurance. The P6SMB43AHM3_B/I is commonly deployed in body control modules, infotainment power supplies, and ADAS sensor interfaces.
What does the "_B/I" suffix mean in P6SMB43AHM3_B/I?
The "_B" denotes AEC-Q101 qualification for the P6SMB43AHM3_B/I series (applicable to 6.8 V–220 V variants), while "/I" specifies 13″ diameter plastic tape-and-reel packaging containing 3200 units. This format supports high-speed pick-and-place assembly and aligns with IPC-7351B land pattern standards for SMB (DO-214AA) devices. The P6SMB43AHM3_B/I thus combines automotive reliability with volume manufacturing readiness.
How does the P6SMB43AHM3_B/I compare to bidirectional TVS diodes?
The P6SMB43AHM3_B/I is unidirectional and intended for DC power line protection where polarity is fixed - it blocks reverse current until VWM is exceeded, then clamps positively. Bidirectional variants (e.g., P6SMB43CA) handle AC or floating signals but exhibit symmetrical clamping in both directions. The P6SMB43AHM3_B/I provides tighter VBR tolerance and lower leakage than bidirectional equivalents at the same voltage rating, making it preferred for regulated DC rails.
What PCB layout guidance applies to the P6SMB43AHM3_B/I?
For optimal thermal and electrical performance, mount the P6SMB43AHM3_B/I on minimum 0.2″ × 0.2″ (5.0 mm × 5.0 mm) copper pads per terminal, per Vishay's recommended layout. Keep traces short and wide between the P6SMB43AHM3_B/I and protected node/ground plane to minimize inductance. Avoid thermal relief on pads unless necessary for soldering; ensure solder mask clearance matches the SMB outline. These practices maintain the specified RθJA of 100 °C/W and preserve clamping speed.
P6SMB43AHM3_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:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 36.8V
- Voltage - Breakdown (Min):
- 40.9V
- Voltage - Clamping (Max) @ Ipp:
- 59.3V
- Current - Peak Pulse (10/1000µs):
- 10.1A
- 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)
P6SMB43AHM3_B/I FAQ
1.How can I place an order for P6SMB43AHM3_B/I through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB43AHM3_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 P6SMB43AHM3_B/I reliable?
The price and inventory of P6SMB43AHM3_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 P6SMB43AHM3_B/I is usually 5 days.
3.What payment methods are accepted for P6SMB43AHM3_B/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB43AHM3_B/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB43AHM3_B/I?
P6SMB43AHM3_B/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB43AHM3_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 P6SMB43AHM3_B/I?
For technical support, including P6SMB43AHM3_B/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB43AHM3_B/I requirements.
6.How does Aetrix verify that P6SMB43AHM3_B/I is sourced from the original manufacturer or authorized distributors?
All P6SMB43AHM3_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 P6SMB43AHM3_B/I meets industry standards.
7.What is the process for return or replacement of P6SMB43AHM3_B/I?
All P6SMB43AHM3_B/I units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB43AHM3_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 P6SMB43AHM3_B/I part is unused and in its original packaging.
Return procedure for P6SMB43AHM3_B/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB43AHM3_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
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 …
