My Inquiry
My Account
Vishay General Semiconductor - Diodes Division P6SMB39CAHM3_B/H
- Part No.:
- P6SMB39CAHM3_B/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB39CAHM3_B/H.pdf
- Description:
- 600W,39V 5%,BIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:7,675
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
P6SMB39CAHM3_B/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 33.3 V standoff voltage (VWM), 37.1–41.0 V breakdown voltage (VBR) at 1 mA, 53.9 V maximum clamping voltage (VC) at 11.1 A peak pulse current, and 600 W peak pulse power capability with 10/1000 μs waveform - used to protect MOSFETs, ICs, and sensor interfaces in automotive and industrial control systems.
For engineers reviewing the P6SMB39CAHM3_B/H datasheet, P6SMB39CAHM3_B/H pinout, P6SMB39CAHM3_B/H application, or P6SMB39CAHM3_B/H equivalent, this device delivers verified bidirectional surge suppression with AEC-Q101 qualification, halogen-free RoHS compliance, and MSL Level 1 moisture sensitivity - critical for automotive-grade ESD and load-dump protection design validation.
Technical Context
The P6SMB39CAHM3_B/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 its low incremental surge resistance enables rapid energy diversion during 10/1000 μs surges.
Thermally, it exhibits RθJA = 100 °C/W and RθJL = 20 °C/W, supporting reliable operation up to TJ = +150 °C. The device is qualified per AEC-Q101 and rated for repetitive 0.01% duty cycle pulses - making it suitable for automotive infotainment power rails and industrial I/O protection where long-term reliability under cyclic stress is required.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Standoff) | 33.3 V - maximum continuous reverse voltage before clamping begins; defines safe operating margin below breakdown |
| VBR (Breakdown) | 37.1–41.0 V at 1 mA - precise avalanche onset range ensuring consistent turn-on across production lots |
| VC (Clamping) | 53.9 V at 11.1 A - limits downstream voltage stress during 10/1000 μs transients, protecting 3.3 V/5 V logic interfaces |
| PPPM | 600 W - peak surge power handling capacity with standard lightning/surge waveform, enabling single-device protection for mid-power circuits |
| IPPM | 11.1 A - peak pulse current supported at VC, directly usable for IEC 61000-4-5 Level 3 (1 kV/2 Ω) compliance margining |
| TJ max. | +150 °C - extended junction temperature rating supports under-hood automotive placement and high-ambient industrial environments |
| Package | SMB (DO-214AA) - standardized surface-mount outline with 5.0 mm × 5.0 mm copper pad thermal relief, compatible with automated reflow assembly |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional configuration with no polarity marking. Cathode/anode terminals are symmetrical; device functions identically in either orientation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bidirectional transient conduction path | Both terminals serve as interchangeable surge current entry/exit points; no PCB layout polarity constraint required |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units and body electronics, with guaranteed reliability over temperature and lifetime cycles |
| Halogen-free & RoHS-compliant (HM3) | Meets global environmental regulations without compromising surge performance or thermal robustness |
| 600 W peak pulse power (10/1000 μs) | Enables single-device protection against IEC 61000-4-5 surge events up to Level 3 without external series impedance |
| MSL Level 1 (260 °C peak) | Compatible with standard lead-free reflow profiles without pre-baking, reducing manufacturing complexity |
| Low clamping ratio (VC/VBR ≈ 1.42) | Minimizes overvoltage overshoot during fast transients, preserving margin for 3.3 V and 5 V interface ICs |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V supply lines in automotive body control modules from load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional TVS clamp placed upstream of DC-DC converters and microcontrollers. Use Value: Limits transient voltage to ≤53.9 V during 100 V/50 ms load dump events, preventing latch-up or gate oxide damage in downstream regulators. |
Use Scenario: Shielding analog sensor outputs (e.g., pressure, temperature) in factory automation PLC I/O modules from ESD and inductive switching noise. IC Role / Device Role / Timing Role: Low-capacitance transient suppressor on differential or single-ended signal traces near connector entry points. Use Value: Clamps 8 kV contact ESD (IEC 61000-4-2) within nanoseconds while adding <0.5 pF parasitic capacitance - preserving signal integrity up to 10 MHz. |
| Telecom Line Interface Protection | Consumer Device USB Port Protection |
Use Scenario: Safeguarding RS-485 transceivers in telecom base station backhaul links exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Primary surge suppression stage before secondary filtering and TVS arrays on data lines. Use Value: Absorbs 600 W surge energy without degradation, maintaining signal common-mode range and meeting GR-1089-CORE Level 3 requirements. |
Use Scenario: Protecting USB 2.0 VBUS and D+/D− lines in smart home hubs from hot-plug transients and user ESD. IC Role / Device Role / Timing Role: Bidirectional clamping element co-located with USB connector, rated for repeated 15 kV air discharge events. Use Value: Survives >1000 ESD strikes at ±15 kV (IEC 61000-4-2) with <1.0 μA leakage at 33.3 V, ensuring long-term port reliability without false disconnects. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bidirectional TVS protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ33CA | Same SMB package, but lower 33 V VWM and 53.3 V VC; 400 W PPPM; not AEC-Q101 qualified | Limited to commercial-grade consumer/industrial use; insufficient for automotive load-dump immunity | Select when cost sensitivity outweighs automotive qualification and higher surge margin is unnecessary |
| SMCJ33CA | Higher 1500 W PPPM, same VWM/VC, but larger SMC (DO-214AB) package; AEC-Q101 available in HM3 variant | Requires PCB area increase (~30% larger footprint); better suited for 1.2/50 μs lightning surges in power supplies | Choose for enhanced surge margin where board space permits and system-level testing demands >600 W capability |
Compared with SMAJ33CA and SMCJ33CA, the P6SMB39CAHM3_B/H uniquely balances AEC-Q101 qualification, 600 W surge rating, and SMB footprint - making it the optimal choice for space-constrained automotive and industrial designs requiring validated reliability without package redesign.
Availability
P6SMB39CAHM3_B/H is available at Aetrix Electronics and suitable for automotive body electronics, industrial I/O modules, telecom line interfaces, and consumer USB protection requiring stable component supply and full traceability.
Supply support for P6SMB39CAHM3_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, and protection devices 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 production lines.
FAQ
What is the standoff voltage (VWM) of the P6SMB39CAHM3_B/H?
The P6SMB39CAHM3_B/H has a standoff voltage (VWM) of 33.3 V, meaning it remains non-conductive under normal operating conditions up to this reverse voltage. This value ensures compatibility with 24 V nominal systems while providing sufficient margin before avalanche conduction begins - a key parameter for selecting the correct P6SMB39CAHM3_B/H for 12 V or 24 V rail protection.
Is the P6SMB39CAHM3_B/H bidirectional or unidirectional?
The P6SMB39CAHM3_B/H is a bidirectional TVS diode, indicated by the "CA" suffix and absence of cathode band marking. It clamps transients equally in both directions, making it ideal for AC-coupled lines, differential interfaces, and applications where polarity cannot be guaranteed - such as automotive LIN bus or industrial RS-422 connections using the P6SMB39CAHM3_B/H.
Does the P6SMB39CAHM3_B/H meet AEC-Q101 qualification?
Yes, the P6SMB39CAHM3_B/H is AEC-Q101 qualified, as confirmed by the "HM3_B/H" ordering code suffix and Vishay documentation. This qualification covers temperature cycling, humidity bias, mechanical shock, and surge endurance tests - validating the P6SMB39CAHM3_B/H for under-hood and chassis-mounted automotive applications where long-term reliability is mandatory.
What is the maximum clamping voltage (VC) of the P6SMB39CAHM3_B/H at rated peak pulse current?
The P6SMB39CAHM3_B/H has a maximum clamping voltage (VC) of 53.9 V at 11.1 A peak pulse current (IPPM) with a 10/1000 μs waveform. This value defines the upper voltage limit imposed on protected circuitry during surge events - critical for ensuring that downstream components like 3.3 V microcontrollers or 5 V transceivers remain within absolute maximum ratings when the P6SMB39CAHM3_B/H activates.
What package type does the P6SMB39CAHM3_B/H use, and is it compatible with standard reflow processes?
The P6SMB39CAHM3_B/H uses the SMB (DO-214AA) surface-mount package and is rated MSL Level 1 with a maximum peak reflow temperature of 260 °C, fully compatible with standard lead-free J-STD-020 reflow profiles. Its matte tin-plated leads ensure solderability per J-STD-002, and the 0.2" × 0.2" copper pad layout recommendation supports thermal dissipation - enabling robust, high-yield assembly of the P6SMB39CAHM3_B/H in volume production.
P6SMB39CAHM3_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):
- 33.3V
- Voltage - Breakdown (Min):
- 37.1V
- Voltage - Clamping (Max) @ Ipp:
- 53.9V
- Current - Peak Pulse (10/1000µs):
- 11.1A
- 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)
P6SMB39CAHM3_B/H FAQ
1.How can I place an order for P6SMB39CAHM3_B/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB39CAHM3_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 P6SMB39CAHM3_B/H reliable?
The price and inventory of P6SMB39CAHM3_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 P6SMB39CAHM3_B/H is usually 5 days.
3.What payment methods are accepted for P6SMB39CAHM3_B/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB39CAHM3_B/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB39CAHM3_B/H?
P6SMB39CAHM3_B/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB39CAHM3_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 P6SMB39CAHM3_B/H?
For technical support, including P6SMB39CAHM3_B/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB39CAHM3_B/H requirements.
6.How does Aetrix verify that P6SMB39CAHM3_B/H is sourced from the original manufacturer or authorized distributors?
All P6SMB39CAHM3_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 P6SMB39CAHM3_B/H meets industry standards.
7.What is the process for return or replacement of P6SMB39CAHM3_B/H?
All P6SMB39CAHM3_B/H units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB39CAHM3_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 P6SMB39CAHM3_B/H part is unused and in its original packaging.
Return procedure for P6SMB39CAHM3_B/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB39CAHM3_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 …
