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Taiwan Semiconductor Corporation P6SMB36AH
- Part No.:
- P6SMB36AH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB36AH.pdf
- Description:
- TVS DIODE 30.8VWM 49.9VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:4,380
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Product details
Overview
P6SMB36AH from Taiwan Semiconductor is a unidirectional 600W surface-mount Transient Voltage Suppressor (TVS) diode with a nominal breakdown voltage of 36V, clamping voltage of 49.9V at 12.6A peak pulse current, and stand-off voltage of 30.8V. It features AEC-Q101 qualification, glass passivated junction, and meets ISO 7637-2 Pulse 1/2a/2b/3a/3b for automotive transient immunity.
For engineers reviewing the P6SMB36AH datasheet, P6SMB36AH pinout, P6SMB36AH application, or P6SMB36AH equivalent, this device serves as a robust, low-profile ESD and surge protection solution for 24V automotive power rails, industrial sensor interfaces, and DC-DC converter input stages where fast response (<1.0 ps), low leakage (<1 µA @ 30.8V), and high reliability under repetitive transients are required.
Technical Context
The P6SMB36AH operates as a unidirectional avalanche diode, triggered when reverse voltage exceeds its minimum breakdown voltage of 34.2V (tested at 1.0 mA). Its clamping action limits transient energy to ≤49.9V at 12.6A (10/1000 µs waveform), enabling protection of downstream MOSFETs, microcontrollers, and CAN transceivers without latch-up or thermal runaway.
Thermal performance is defined by RθJC = 10°C/W and RθJA = 55°C/W, supporting continuous operation up to +150°C junction temperature. The DO-214AA (SMB) package provides mechanical robustness, UL 94V-0 flammability rating, and compatibility with automated SMT placement-critical for high-volume automotive module assembly.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 34.2 V / 37.8 V - Ensures reliable turn-on above 30.8 V system operating voltage while avoiding false triggering during normal 24V rail ripple. |
| VWM | 30.8 V - Maximum continuous reverse working voltage; sets safe margin below 24V system nominal with 28–32V load-dump tolerance. |
| VC @ IPPM | 49.9 V @ 12.6 A - Clamping voltage defines worst-case stress on protected ICs during ISO 7637-2 Pulse 2b (inductive switch-off) events. |
| PPPSM | 600 W - Peak pulse power rating per 10/1000 µs waveform; supports single-event surge immunity up to 12.6 A without degradation. |
| IR @ VWM | <1 µA - Ultra-low reverse leakage preserves battery life in always-on automotive modules and avoids false wake-up in low-power sleep modes. |
| TJ max | +150 °C - Enables deployment in engine bay, powertrain control units, and under-hood ECUs without derating at ambient temperatures up to +125°C. |
| Package | DO-214AA (SMB) - Standardized 4.5 × 3.9 mm surface-mount outline with cathode band marking; compatible with IPC-7351B footprint and J-STD-002 solderability. |
Pinout & Package
DO-214AA (SMB) package: molded plastic case with matte tin-plated leads, polarity indicated by cathode band. Weight ≈ 0.090 g. Meets JESD201 Class 2 whisker resistance and J-STD-020 moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference node | Connected to ground or common return path; establishes reference for clamping action during positive transients on cathode side. |
| Cathode | Protected line input | Connected to 24V rail or signal line; absorbs surge energy by avalanching into anode when voltage exceeds VBR. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing-enables use in ASIL-B systems without additional qualification. |
| Glass passivated junction | Eliminates surface contamination risk and ensures stable VBR over lifetime; critical for long-term field stability in harsh under-hood environments. |
| Fast response time <1.0 ps | Clamps transients before propagation into sensitive analog front-ends or digital logic; prevents latch-up in microcontrollers during EFT bursts. |
| ISO 7637-2 compliance | Guarantees immunity against standardized automotive electrical disturbances (Pulse 1, 2a, 2b, 3a, 3b), reducing need for system-level retesting. |
| RoHS & halogen-free | Meets IEC 61249-2-21 and EU RoHS Directive 2011/65/EU-supports green manufacturing and export compliance for global OEM programs. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: 24V supply line in body control module exposed to load dump (up to 60V) and inductive switching spikes from solenoids or relays. IC Role / Device Role: Primary overvoltage clamp placed upstream of DC-DC converters and LDOs feeding MCU and CAN transceivers. Use Value: Limits transient voltage to ≤49.9V, preventing damage to 5V/3.3V regulators and ensuring uninterrupted communication during ISO 7637-2 Pulse 2b events. |
Use Scenario: 4–20 mA current loop interface in factory automation PLC I/O modules subjected to ESD and cable discharge events. IC Role / Device Role: Bidirectional protection element (when used in dual-diode configuration) or unidirectional clamp on loop supply rail. Use Value: Sub-µA leakage preserves loop accuracy; 600W rating handles multi-kV ESD strikes without degradation, maintaining signal integrity over 10+ year service life. |
| DC-DC Converter Input Stage | Automotive Lighting Driver Protection |
|
Use Scenario: Input stage of 24V-to-5V buck converter powering ADAS camera modules, where input surges may originate from alternator regulation faults. IC Role / Device Role: First-line transient suppressor between connector and converter input capacitor. Use Value: Clamps 10/1000 µs surges to 49.9V, preventing overstress of MOSFET gate oxide and input bulk capacitor dielectric breakdown. |
Use Scenario: LED headlamp driver board exposed to hot-swap transients during lamp replacement and PWM-induced ringing. IC Role / Device Role: Unidirectional TVS across LED string input to absorb reverse recovery spikes from flyback drivers. Use Value: 34.2–37.8V VBR range aligns with 24V system tolerances; 12.6A IPPM withstands repeated PWM edge transients without parameter shift. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ36A | Same DO-214AC (SMA) package; lower PPPSM = 400W; VC = 58.1V @ 6.9A; higher clamping voltage increases stress on protected ICs. | Not AEC-Q101 qualified; limited to industrial/commercial grade designs without automotive qualification requirements. | Select SMAJ36A only if cost is primary constraint and AEC-Q101 compliance is not mandated. |
| SMBJ36A | Identical DO-214AA (SMB) package and 600W rating; VBR = 38.0–42.0V; VC = 58.1V @ 10.3A - 16% higher clamping voltage than P6SMB36AH. | Also AEC-Q101 qualified but lacks ISO 7637-2 Pulse 2b validation per manufacturer documentation; requires system-level revalidation for automotive use. | Choose SMBJ36A only if higher VBR tolerance is needed for systems with wider 24V rail variation, accepting reduced clamping margin. |
Compared with SMAJ36A and SMBJ36A, the P6SMB36AH delivers superior clamping performance (49.9V vs. ≥58.1V), certified ISO 7637-2 compliance, and tighter VBR distribution (34.2–37.8V), making it the preferred choice for safety-critical 24V automotive subsystems requiring guaranteed transient immunity.
Availability
P6SMB36AH is available at Aetrix Electronics and suitable for automotive power management, industrial sensor interfaces, and DC-DC converter input protection requiring stable component supply, long-lifecycle support, and AEC-Q101-compliant sourcing.
Supply support for P6SMB36AH 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 for automotive, industrial, and consumer markets.
The P6SMB36AH belongs to TSC's AEC-Q101-qualified P6SMBx(A)H series-designed specifically for robust transient suppression in 12V/24V automotive electrical systems and harsh-environment industrial controls.
FAQ
What is the maximum clamping voltage of the P6SMB36AH under standard test conditions?
The P6SMB36AH has a maximum clamping voltage (VC) of 49.9 V when subjected to a 10/1000 µs peak pulse current of 12.6 A at TA = 25°C. This value is measured per ANSI/IEEE C62.35 and defines the upper voltage limit imposed on protected circuitry during surge events. The P6SMB36AH maintains this clamping performance across its full operating temperature range.
Is the P6SMB36AH suitable for bidirectional transient protection?
No-the P6SMB36AH is a unidirectional TVS diode intended for DC applications with defined polarity. For bidirectional protection, Taiwan Semiconductor offers the P6SMB36CAH variant (with CAH suffix), which features symmetrical breakdown characteristics in both directions. Using the P6SMB36AH in reverse-biased AC or bipolar signal paths will result in forward conduction and potential failure.
Does the P6SMB36AH meet automotive qualification standards?
Yes-the P6SMB36AH is explicitly AEC-Q101 qualified and validated for automotive use. It complies with ISO 7637-2 Pulse 1, 2a, 2b, 3a, and 3b transient immunity requirements, and is rated for operation from −55°C to +150°C junction temperature-meeting the environmental demands of engine control units, body electronics, and lighting modules.
What is the leakage current specification for the P6SMB36AH at its working voltage?
The P6SMB36AH exhibits a maximum reverse leakage current (ID) of less than 1 µA when biased at its rated stand-off voltage (VWM) of 30.8 V. This ultra-low leakage ensures minimal power loss in always-on automotive circuits and prevents interference with precision analog sensing or low-power sleep modes in microcontroller-based systems.
How does the P6SMB36AH compare to the P6SMB36H variant?
The P6SMB36AH offers a tighter breakdown voltage range (34.2–37.8 V) versus the P6SMB36H (32.4–39.6 V), resulting in more predictable clamping behavior and reduced design margin uncertainty. Both share identical 600W rating, DO-214AA package, and AEC-Q101 qualification-but the "A" suffix denotes enhanced VBR tolerance, making the P6SMB36AH preferable for designs requiring precise voltage threshold control.
P6SMB36AH 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):
- 30.8V
- Voltage - Breakdown (Min):
- 34.2V
- Voltage - Clamping (Max) @ Ipp:
- 49.9V
- Current - Peak Pulse (10/1000µs):
- 12.6A
- 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)
P6SMB36AH FAQ
1.How can I place an order for P6SMB36AH through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB36AH 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 P6SMB36AH reliable?
The price and inventory of P6SMB36AH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB36AH is usually 5 days.
3.What payment methods are accepted for P6SMB36AH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB36AH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB36AH?
P6SMB36AH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB36AH 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 P6SMB36AH?
For technical support, including P6SMB36AH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB36AH requirements.
6.How does Aetrix verify that P6SMB36AH is sourced from the original manufacturer or authorized distributors?
All P6SMB36AH 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 P6SMB36AH meets industry standards.
7.What is the process for return or replacement of P6SMB36AH?
All P6SMB36AH units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB36AH, 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 P6SMB36AH part is unused and in its original packaging.
Return procedure for P6SMB36AH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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