My Inquiry
My Account
Vishay General Semiconductor - Diodes Division P6SMB39AHM3/I
- Part No.:
- P6SMB39AHM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB39AHM3/I.pdf
- Description:
- TVS DIODE 33.3VWM 53.9VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:5,482
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
P6SMB39AHM3/I from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in the SMB (DO-214AA) package, designed for clamping fast-rising voltage transients on power and signal lines. It features a 33.3 V stand-off 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 rating with a 10/1000 µs waveform - deployed in automotive sensor protection and industrial I/O interface circuits.
For engineers reviewing the P6SMB39AHM3/I datasheet, P6SMB39AHM3/I pinout, P6SMB39AHM3/I application, or P6SMB39AHM3/I equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, thermal resistance data, clamping performance under surge conditions, and direct alternative part comparisons for robust overvoltage protection design-in.
Technical Context
The P6SMB39AHM3/I operates as a unidirectional avalanche diode, conducting only when reverse voltage exceeds its specified VBR range (37.1–41.0 V), with cathode-banded polarity marking. Its low incremental surge resistance and <1 ns response time enable effective suppression of ESD, lightning-induced surges, and inductive switching spikes.
Rated for 150 °C maximum junction temperature and compliant with JESD201 Class 2 whisker resistance, it uses glass-passivated silicon junction construction and matte tin-plated leads solderable per J-STD-002. The device is halogen-free, RoHS-compliant, and AEC-Q101 qualified (HM3 suffix denotes automotive grade).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 33.3 V - Maximum continuous reverse operating voltage before clamping begins; ensures no conduction during normal operation. |
| VBR (Breakdown) | 37.1–41.0 V at 1 mA - Voltage at which avalanche conduction initiates; defines precise clamping onset threshold. |
| VC (Clamping) | 53.9 V at 11.1 A - Maximum voltage seen across terminals during 10/1000 µs surge; critical for downstream IC voltage margining. |
| PPPM | 600 W - Peak pulse power handling capability; determines survivability against standardized lightning/surge waveforms. |
| RθJA | 100 °C/W - Junction-to-ambient thermal resistance on standard 0.2" × 0.2" copper pads; informs derating above 25 °C ambient. |
| IFSM | 100 A - Non-repetitive forward surge current rating (8.3 ms half-sine); supports inrush or fault-current tolerance in power rails. |
| TJ max | +150 °C - Maximum junction temperature; enables operation in under-hood automotive and high-temperature industrial environments. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, halogen-free, RoHS-compliant, with matte tin-plated leads. Cathode identified by black band on body end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Reverse voltage reference | Connected to lower-potential side of protected line; defines directionality for unidirectional clamping. |
| Cathode | Avalanche conduction terminal | Marked with black band; connected to higher-potential side (e.g., VCC rail or signal line); conducts during overvoltage events. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Enables reliable suppression of IEC 61000-4-5 Level 4 surges (4 kV) without failure in compact SMB footprint. |
| AEC-Q101 qualified (HM3 suffix) | Validated for automotive-grade reliability including temperature cycling, humidity testing, and mechanical shock per AEC standards. |
| Glass passivated junction | Provides stable leakage performance and long-term reliability under thermal stress and humidity exposure. |
| MSL Level 1 (260 °C peak reflow) | Supports single-pass lead-free reflow assembly without moisture-related popcorning or delamination. |
| Low clamping ratio (VC/VBR ≈ 1.4) | Minimizes overvoltage overshoot during transients, protecting 3.3 V/5 V/12 V logic and analog front-ends effectively. |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor outputs (e.g., pressure, temperature) from load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Unidirectional TVS placed between signal line and ground to clamp negative transients and between VBAT and ground for positive surges. Use Value: Maintains signal integrity below 53.9 V clamping level while surviving 100 A surge currents per AEC-Q101 test requirements. |
Use Scenario: Safeguarding digital input modules in programmable logic controllers exposed to field-wiring induced transients and relay coil flyback. IC Role / Device Role / Timing Role: Standoff-rated TVS on 24 V DC input channels, absorbing repetitive 600 W surges without degradation. Use Value: Enables >100,000 surge cycles at rated conditions due to low incremental resistance and stable VBR drift. |
| Consumer Power Adapter Input | Telecom Line Card Surge Protection |
Use Scenario: Secondary-side overvoltage suppression on 12–19 V DC outputs of wall adapters subject to capacitor discharge and hot-plug events. IC Role / Device Role / Timing Role: Unidirectional clamping device from output rail to ground, activated only during overvoltage faults. Use Value: Prevents latch-up or burnout of downstream DC-DC regulators with 33.3 V nominal hold-off and 53.9 V safe clamping ceiling. |
Use Scenario: Front-end protection of Ethernet PHY interfaces and RS-485 transceivers against lightning-induced common-mode surges. IC Role / Device Role / Timing Role: Paired unidirectional TVS devices (line-to-ground) providing differential and common-mode surge immunity. Use Value: Achieves <1 ns response time and <54 V clamping to preserve signal eye diagram integrity on 100BASE-TX links. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ36A-E3/5B | Same SMB package, 36 V VWM, 40–44.4 V VBR, 58.1 V VC at 10.3 A; non-AEC-Q101, commercial-grade only. | Lacks automotive qualification and halogen-free certification; suitable for cost-sensitive consumer/industrial designs without AEC compliance needs. | Select SMAJ36A-E3/5B when AEC-Q101 is not required and slightly higher clamping voltage is acceptable. |
| 1.5SMC39AHE3/A | Higher-power SMC package (1500 W), same 33.3 V VWM, 37.1–41.0 V VBR, but larger footprint and 58.1 V VC at 25.8 A. | Used where higher energy absorption (>600 W) is needed, e.g., primary-side AC input protection or high-energy motor drive circuits. | Choose 1.5SMC39AHE3/A if system-level surge tests exceed IEC 61000-4-5 Level 4 and PCB layout allows SMC footprint. |
Compared with SMAJ36A-E3/5B, P6SMB39AHM3/I offers AEC-Q101 qualification and halogen-free compliance at identical VWM/VBR; versus 1.5SMC39AHE3/A, it provides space-constrained SMB mounting with lower clamping voltage (53.9 V vs. 58.1 V) for tighter downstream voltage margins.
Availability
P6SMB39AHM3/I is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC I/O cards, and telecom line interface protection requiring stable component supply, AEC-Q101 traceability, and consistent surge performance across production lots.
Supply support for P6SMB39AHM3/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-reliability transient suppression in automotive, industrial, and communications systems, engineered for low clamping ratio, fast response, and robust MSL Level 1 reflow compatibility.
FAQ
What is the clamping voltage of P6SMB39AHM3/I at its rated peak pulse current?
The P6SMB39AHM3/I has a maximum clamping voltage (VC) of 53.9 V at 11.1 A peak pulse current (IPPM) under a 10/1000 µs waveform. This value is measured per JEDEC standards and defines the upper voltage limit imposed on protected circuitry during surge events. The P6SMB39AHM3/I maintains this clamping performance across its full operating temperature range and after repeated surge exposures, as validated in AEC-Q101 qualification testing.
Is P6SMB39AHM3/I qualified for automotive applications?
Yes, P6SMB39AHM3/I is AEC-Q101 qualified, as indicated by the "HM3" suffix - denoting halogen-free, RoHS-compliant, and automotive-grade construction. It undergoes rigorous stress testing including temperature cycling, high-temperature reverse bias, and mechanical shock per AEC-Q101 Rev D. The P6SMB39AHM3/I is approved for use in engine control units, body electronics, and ADAS sensor modules where transient immunity and long-term reliability are mandatory.
What does the "I" suffix mean in P6SMB39AHM3/I?
The "I" suffix in P6SMB39AHM3/I specifies the packaging configuration: 13-inch diameter plastic tape and reel, with 3200 units per reel. This format supports high-volume automated SMT placement and is compatible with industry-standard pick-and-place equipment. The "HM3" portion confirms halogen-free, RoHS-compliant, and AEC-Q101 qualified construction, while "I" exclusively refers to reel size and quantity - not electrical or reliability characteristics.
How does P6SMB39AHM3/I compare to bidirectional TVS diodes like P6SMB39CA?
P6SMB39AHM3/I is unidirectional and intended for DC-biased lines where polarity is fixed (e.g., VCC-to-ground protection), offering lower leakage and sharper knee characteristics. In contrast, P6SMB39CA is bidirectional and suited for AC or floating signal lines (e.g., USB D+/D−, RS-485). The P6SMB39AHM3/I cannot replace P6SMB39CA in AC-coupled applications without circuit redesign, as it lacks symmetrical conduction in both directions.
What is the thermal resistance of P6SMB39AHM3/I, and how does it affect derating?
The P6SMB39AHM3/I has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 0.2" × 0.2" copper pads per JEDEC 51-3. This value requires power derating above 25 °C ambient: for example, at 85 °C ambient, the maximum allowable steady-state power drops to ~3.0 W (5.0 W × [1 − (85−25)/125]). The P6SMB39AHM3/I's 600 W surge rating remains valid regardless of ambient, as surge energy is dissipated thermally over milliseconds, not continuously.
P6SMB39AHM3/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:
- Discontinued at Digi-Key
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- 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)
P6SMB39AHM3/I FAQ
1.How can I place an order for P6SMB39AHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB39AHM3/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 P6SMB39AHM3/I reliable?
The price and inventory of P6SMB39AHM3/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB39AHM3/I is usually 5 days.
3.What payment methods are accepted for P6SMB39AHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB39AHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB39AHM3/I?
P6SMB39AHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB39AHM3/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 P6SMB39AHM3/I?
For technical support, including P6SMB39AHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB39AHM3/I requirements.
6.How does Aetrix verify that P6SMB39AHM3/I is sourced from the original manufacturer or authorized distributors?
All P6SMB39AHM3/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 P6SMB39AHM3/I meets industry standards.
7.What is the process for return or replacement of P6SMB39AHM3/I?
All P6SMB39AHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB39AHM3/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 P6SMB39AHM3/I part is unused and in its original packaging.
Return procedure for P6SMB39AHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB39AHM3/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 …
