My Inquiry
My Account
Taiwan Semiconductor Corporation P6SMB33AH
- Part No.:
- P6SMB33AH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB33AH.pdf
- Description:
- TVS DIODE 28.2VWM 45.7VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,597
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
P6SMB33AH from Taiwan Semiconductor is a unidirectional 600W surface-mount transient voltage suppressor (TVS) diode with a breakdown voltage range of 31.4–34.7 V, stand-off voltage of 28.2 V, and clamping voltage of 45.7 V at 13.8 A peak pulse current. It features glass passivated junction, AEC-Q101 qualification, and DO-214AA (SMB) package-designed for automotive ESD and load-dump protection in power supply rails.
For engineers reviewing the P6SMB33AH datasheet, P6SMB33AH pinout, P6SMB33AH application, or P6SMB33AH equivalent, key selection criteria include its 28.2 V working voltage, 45.7 V clamping performance under 10/1000 µs surge, ±0.098 %/°C VBR temperature coefficient, and compliance with ISO 7637-2 Pulse 1/2a/2b/3a/3b for automotive transients.
Technical Context
The P6SMB33AH operates as a unidirectional avalanche diode, triggered when reverse voltage exceeds its minimum breakdown voltage (31.4 V). Its glass-passivated junction ensures stable leakage (<1 µA @ 28.2 V) and fast response (<1.0 ps), enabling effective suppression of EFT and inductive switching transients.
Thermally, it supports operation from –55 °C to +150 °C with RθJC = 10 °C/W and RθJA = 55 °C/W. It meets JESD201 Class 2 whisker resistance and J-STD-020 Moisture Sensitivity Level 1, supporting lead-free reflow assembly without preconditioning.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 31.4 V / 34.7 V - defines reliable avalanche initiation window under 1 mA test current |
| VWM | 28.2 V - maximum continuous reverse operating voltage before leakage rises significantly |
| VC @ IPPM | 45.7 V @ 13.8 A - clamping voltage during 10/1000 µs surge; determines protected circuit's max transient exposure |
| PPPSM | 600 W - peak pulse power handling per single non-repetitive 10/1000 µs waveform |
| IR @ VWM | <1 µA - ultra-low leakage ensures minimal standby power loss in high-impedance bias networks |
| TJ max | +150 °C - enables placement near hot components (e.g., power MOSFETs, DC-DC inductors) without derating |
| Package | DO-214AA (SMB) - industry-standard surface-mount outline; 4.57 mm × 3.94 mm footprint, compatible with automated pick-and-place |
Pinout & Package
DO-214AA (SMB) package: molded plastic case with matte tin-plated leads; cathode indicated by band marking; polarity-critical for unidirectional operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side (e.g., ground or return path) in unidirectional TVS configuration |
| Cathode | Avalanche clamping terminal | Connected to protected line (e.g., 24 V rail); conducts surge current to ground when VREV > VBR |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive underhood applications including temperature cycling, mechanical shock, and humidity testing |
| Glass passivated junction | Ensures long-term stability of VBR and low leakage across lifetime and environmental stress |
| ISO 7637-2 compliance | Withstands defined automotive transient pulses (Pulse 1: inductive load dump; Pulse 2a/2b: supply interruption; Pulse 3a/3b: EFT) |
| Moisture sensitivity level 1 | Zero floor life limitation-no baking required prior to reflow soldering per J-STD-020 |
| RoHS & halogen-free | Meets IEC 61249-2-21 and EU RoHS Directive 2011/65/EU for green electronics manufacturing |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 24 V CAN bus power lines against load dump and jump-start surges in vehicle ECUs. IC Role / Device Role / Timing Role: Unidirectional TVS placed between VBAT and chassis ground to clamp transients above 28.2 V. Use Value: Limits voltage seen by downstream DC-DC converters and CAN transceivers to ≤45.7 V during 600 W surges, preventing latch-up or overvoltage damage. | Use Scenario: Safeguarding analog sensor inputs (e.g., pressure, temperature) in PLC modules exposed to relay coil flyback. IC Role / Device Role / Timing Role: TVS mounted at connector entry point to shunt inductive kickback before reaching op-amp front-end. Use Value: Sub-1 ps response and <1 µA leakage preserve signal integrity and offset accuracy while absorbing 13.8 A transient peaks. |
| LED Driver Overvoltage Clamp | ESD-Sensitive MCU I/O Protection |
Use Scenario: Preventing overvoltage failure in constant-current LED drivers subjected to 12 V supply transients. IC Role / Device Role / Timing Role: Placed across driver input capacitor to clamp surges before they reach controller IC and MOSFET gate driver. Use Value: 45.7 V clamping ensures driver IC remains within absolute maximum ratings even during 600 W ISO 7637-2 Pulse 1 events. | Use Scenario: Shielding microcontroller GPIO pins from ESD events (>8 kV contact discharge) in handheld industrial tools. IC Role / Device Role / Timing Role: Low-capacitance TVS (typ. <100 pF at 0 V) placed directly at connector, routed to local ground plane. Use Value: Fast clamping action limits ESD-induced voltage overshoot to safe levels without distorting digital signal edges or causing false triggers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ33A | Same DO-214AA package; VBR = 36.7–40.6 V; VC = 53.3 V @ 11.2 A; PPPSM = 600 W | Higher clamping voltage reduces margin for 33 V-rated circuits; suitable where higher VWM (30 V) is acceptable | Select SMBJ33A only if system tolerates ≥53 V transient exposure and requires tighter VBR tolerance (±5% vs. P6SMB33AH's ±5.2%) |
| 1.5SMC33A | DO-214AB (SMC) package; larger footprint (7.11 mm × 6.22 mm); VBR = 35.1–38.8 V; VC = 53.3 V @ 11.2 A | Not drop-in: requires PCB layout change; higher thermal mass improves sustained surge handling but sacrifices board space | Choose 1.5SMC33A only when higher IFSM (200 A) or improved thermal dissipation (RθJA ≈ 35 °C/W) is prioritized over miniaturization |
Compared with SMBJ33A and 1.5SMC33A, the P6SMB33AH offers the lowest clamping voltage (45.7 V) in the 33 V class and smallest footprint (DO-214AA), making it optimal for space-constrained automotive and industrial PCBs requiring tight voltage limiting.
Availability
P6SMB33AH is available at Aetrix Electronics and suitable for automotive ECU design, industrial sensor interface protection, and LED driver overvoltage clamping requiring stable component supply and AEC-Q101-compliant reliability.
Supply support for P6SMB33AH 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
Taiwan Semiconductor Corporation (TSC) is a vertically integrated semiconductor manufacturer specializing in discrete power devices, TVS diodes, rectifiers, and MOSFETs, with global distribution and AEC-Q101 validation capability.
The P6SMB series is part of TSC's automotive-grade transient suppression portfolio, engineered specifically for ISO 7637-2 compliance and under-hood deployment in 12 V/24 V vehicle systems.
FAQ
What is the maximum clamping voltage of the P6SMB33AH under standard 10/1000 µs surge conditions?
The P6SMB33AH has a maximum clamping voltage (VC) of 45.7 V when subjected to its rated peak pulse current of 13.8 A using the 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and guarantees that downstream circuitry will not experience voltages exceeding this threshold during standardized transient events-critical for protecting 33 V-rated power stages and interfaces in the P6SMB33AH application context.
Is the P6SMB33AH suitable for bidirectional transient suppression?
No, the P6SMB33AH is a unidirectional TVS diode and must be used with correct polarity-cathode toward the protected line. For bidirectional protection, TSC offers the P6SMB33CAH variant (with "CAH" suffix), which provides symmetrical clamping in both directions. Using P6SMB33AH in reverse-biased configurations risks permanent damage due to forward conduction beyond its 3.5 V rating.
Does the P6SMB33AH require moisture preconditioning before reflow soldering?
No, the P6SMB33AH is rated at Moisture Sensitivity Level 1 per J-STD-020, meaning it has unlimited floor life and does not require baking or dry-pack handling prior to reflow. This simplifies manufacturing logistics and eliminates risk of popcorning during lead-free soldering profiles-confirmed in the official TSC datasheet revision A2102.
How does the P6SMB33AH compare to the P6SMB33H in terms of breakdown voltage tolerance?
The P6SMB33AH has a tighter breakdown voltage range (31.4–34.7 V, ±5.2%) versus the P6SMB33H (29.7–36.3 V, ±10%). This narrower VBR spread ensures more predictable clamping onset and improved consistency across production lots-especially valuable in safety-critical automotive applications where precise voltage thresholding is required for the P6SMB33AH design implementation.
What is the peak forward surge current rating for the P6SMB33AH?
The P6SMB33AH is rated for a peak forward surge current (IFSM) of 100 A under an 8.3 ms single half-sine wave condition. This rating applies only in forward conduction mode (anode positive relative to cathode) and reflects robustness against accidental polarity reversal or inrush events-though the device is intended for reverse-biased transient suppression, and forward operation should be avoided in normal P6SMB33AH application layouts.
P6SMB33AH Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-214AA, SMB
- Series:
- P6SMB
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 28.2V
- Voltage - Breakdown (Min):
- 31.4V
- Voltage - Clamping (Max) @ Ipp:
- 45.7V
- Current - Peak Pulse (10/1000µs):
- 13.8A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
P6SMB33AH FAQ
1.How can I place an order for P6SMB33AH through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB33AH 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 P6SMB33AH reliable?
The price and inventory of P6SMB33AH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB33AH is usually 5 days.
3.What payment methods are accepted for P6SMB33AH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB33AH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB33AH?
P6SMB33AH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB33AH 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 P6SMB33AH?
For technical support, including P6SMB33AH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB33AH requirements.
6.How does Aetrix verify that P6SMB33AH is sourced from the original manufacturer or authorized distributors?
All P6SMB33AH 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 P6SMB33AH meets industry standards.
7.What is the process for return or replacement of P6SMB33AH?
All P6SMB33AH units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB33AH, 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 P6SMB33AH part is unused and in its original packaging.
Return procedure for P6SMB33AH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB33AH 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
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…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
