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Taiwan Semiconductor Corporation P6SMB20AH
- Part No.:
- P6SMB20AH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB20AH.pdf
- Description:
- TVS DIODE 17.1VWM 27.7VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,472
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Product details
Overview
P6SMB20AH from Taiwan Semiconductor is a unidirectional 600W surface-mount transient voltage suppressor (TVS) diode with a breakdown voltage range of 19.0–21.0 V, stand-off voltage of 17.1 V, and clamping voltage of 27.7 V at 22 A peak pulse current - designed for automotive ESD and load-dump protection in power supply rails and signal lines.
For engineers reviewing the P6SMB20AH datasheet, P6SMB20AH pinout, P6SMB20AH application, or P6SMB20AH equivalent, key selection criteria include its AEC-Q101 qualification, DO-214AA (SMB) package compatibility, 1 μA max reverse leakage at VWM, 150°C junction rating, and ISO 7637-2 Pulse 1/2a/2b/3a/3b compliance for automotive transients.
Technical Context
The P6SMB20AH operates as a unidirectional avalanche diode, activated when reverse voltage exceeds its minimum breakdown threshold (19.0 V), clamping transient energy within 1.0 ps response time. Its glass-passivated junction ensures stable VBR tolerance (±5%) and low temperature coefficient (0.090 %/°C).
It delivers 600 W non-repetitive peak pulse power under 10/1000 μs waveform, with thermal resistance RθJA = 55 °C/W and RθJC = 10 °C/W - enabling reliable operation in high-ambient environments up to 150°C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 19.0 V / 21.0 V - defines precise avalanche initiation window for repeatable clamping behavior |
| VWM | 17.1 V - maximum continuous reverse operating voltage before leakage rises significantly |
| VC @ IPPM | 27.7 V at 22 A - limits downstream voltage during worst-case 10/1000 μs surge |
| IPPM | 22 A - peak surge current capability under standard 10/1000 μs transient waveform |
| PPPSM | 600 W - non-repetitive surge power handling per JEDEC/IEC standards |
| TJ max | 150 °C - enables use in under-hood automotive modules without derating below 125 °C ambient |
| IR @ VWM | <1 μA - ensures negligible standby power loss in always-on circuits |
Pinout & Package
Package: DO-214AA (SMB), surface-mount, single-diode configuration with cathode band marking. Matte tin-plated leads meet J-STD-002 solderability; polarity is marked on body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to system ground or lower-potential node in unidirectional clamp configuration |
| Cathode | Avalanche clamping terminal | Connected to protected line (e.g., 12 V rail); conducts during overvoltage to shunt current to ground |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD stress per JESD47 |
| Glass-passivated junction | Ensures long-term parameter stability and reduced parameter drift under thermal/humidity stress |
| ISO 7637-2 compliance | Meets Pulse 1 (inductive load dump), Pulse 2a/2b (switching transients), and Pulse 3a/3b (line impedance coupling) |
| Low-profile SMB package | Enables automated SMT placement and fits space-constrained PCB layouts (typ. 4.5 × 3.9 × 2.3 mm) |
| Moisture sensitivity level 1 | No floor life limitation or bake requirement prior to reflow - simplifies manufacturing logistics |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Clamping load-dump transients on 12 V battery-fed ECUs in passenger vehicles. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed between power input and ground to divert surge energy away from LDOs and microcontrollers. Use Value: Limits voltage to ≤27.7 V during 10/1000 μs pulses, preventing latch-up or gate oxide damage in downstream ICs rated for 30 V absolute max. | Use Scenario: Protecting analog sensor inputs (e.g., pressure, temperature) from ESD events in factory automation PLCs. IC Role / Device Role / Timing Role: Standoff-clamp device on signal line, positioned upstream of op-amp input stage. Use Value: Sub-1 μA leakage at 17.1 V ensures no DC error injection; 1.0 ps response captures fast ESD spikes before they propagate into precision front-end circuitry. |
| LED Driver Output Protection | DC-DC Converter Input Stage |
Use Scenario: Safeguarding constant-current LED driver outputs against inductive kickback from disconnected loads. IC Role / Device Role / Timing Role: Unidirectional TVS connected anode-to-ground, cathode-to-output to clamp reverse flyback voltage. Use Value: Withstands 100 A IFSM surge and clamps to 27.7 V, preventing MOSFET drain-source breakdown in high-side switch configurations. | Use Scenario: Input surge suppression for buck converters in telecom power supplies exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Primary-line TVS placed between input capacitor and upstream fuse, referenced to chassis ground. Use Value: 600 W peak power rating absorbs multiple 10/1000 μs transients without degradation, maintaining converter uptime in outdoor base station cabinets. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ20A | Same DO-214AA package, identical VBR (19.0–21.0 V), but higher VC = 32.4 V at 18.4 A; lower PPPSM = 600 W same rating | Higher clamping voltage reduces margin for 24 V systems with tight downstream voltage tolerances | Select P6SMB20AH when clamping voltage ≤27.7 V is required to protect 30 V-rated components |
| 1.5SMC20A | Larger DO-214AB (SMC) package (7.1 × 6.2 × 2.6 mm); otherwise matches VBR, VWM, and VC specs | Requires PCB layout change due to larger footprint and higher thermal mass; better for higher ambient temp designs | Choose P6SMB20AH for space-constrained automotive modules where SMB footprint is mandated |
Compared with SMBJ20A and 1.5SMC20A, the P6SMB20AH offers the lowest clamping voltage in the SMB form factor and AEC-Q101 qualification - making it optimal for automotive 12 V rail protection where board area and voltage margin are critical constraints.
Availability
P6SMB20AH is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor interfaces, LED lighting drivers, and DC-DC converter input stages requiring stable component supply across production lifecycles.
Supply support for P6SMB20AH 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 Taiwanese semiconductor manufacturer specializing in discrete power devices, TVS diodes, rectifiers, and MOSFETs for automotive and industrial markets.
The P6SMB20AH belongs to TSC's AEC-Q101-qualified P6SMBx(A)H series - engineered specifically for robust transient immunity in automotive power distribution networks and harsh-environment industrial control systems.
FAQ
What is the polarity configuration of the P6SMB20AH?
The P6SMB20AH is a unidirectional TVS diode with cathode band marking on the DO-214AA (SMB) package body. It conducts only in reverse bias above VBR, making it suitable for DC rail clamping where polarity is fixed - unlike bidirectional variants (e.g., P6SMB20CAH) used in AC or floating-signal applications. The P6SMB20AH must be oriented with cathode toward the protected line and anode to ground.
Does the P6SMB20AH meet automotive qualification standards?
Yes, the P6SMB20AH is AEC-Q101 qualified and tested per JESD47 requirements including HTGB, H3TRB, and temperature cycling. It also meets ISO 7637-2 Pulse 1, 2a, 2b, 3a, and 3b for automotive transient immunity - confirming suitability for engine control units, body electronics, and infotainment systems. This certification applies directly to the P6SMB20AH, not just the family.
What is the maximum clamping voltage of the P6SMB20AH under standard test conditions?
The P6SMB20AH has a maximum clamping voltage (VC) of 27.7 V when subjected to its rated peak pulse current (IPPM) of 22 A using the 10/1000 μs waveform. This value is measured at TA = 25°C and represents the upper limit of voltage seen by downstream components during surge events - critical for ensuring compatibility with 30 V-rated ICs and MOSFETs in the same design.
How does the P6SMB20AH compare to the P6SMB20H variant?
The P6SMB20AH features tighter VBR tolerance (19.0–21.0 V, ±5%) versus P6SMB20H (18.0–22.0 V, ±10%), resulting in more predictable clamping onset and reduced risk of premature conduction. Both share identical package, power rating, and thermal specs, but the 'A' suffix denotes enhanced binning - making P6SMB20AH preferred for designs requiring precise voltage thresholds, such as regulated 12 V rail protection.
Is the P6SMB20AH RoHS and halogen-free compliant?
Yes, the P6SMB20AH is RoHS compliant and halogen-free per IEC 61249-2-21. The molding compound meets UL 94V-0 flammability rating, and terminals are matte tin plated per J-STD-002 for lead-free soldering. These compliance attributes are explicitly confirmed in the official Taiwan Semiconductor datasheet revision A2102 for the P6SMB20AH, supporting environmental and safety requirements in global automotive and industrial deployments.
P6SMB20AH 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):
- 17.1V
- Voltage - Breakdown (Min):
- 19V
- Voltage - Clamping (Max) @ Ipp:
- 27.7V
- Current - Peak Pulse (10/1000µs):
- 22A
- 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)
P6SMB20AH FAQ
1.How can I place an order for P6SMB20AH through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB20AH 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 P6SMB20AH reliable?
The price and inventory of P6SMB20AH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB20AH is usually 5 days.
3.What payment methods are accepted for P6SMB20AH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB20AH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB20AH?
P6SMB20AH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB20AH 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 P6SMB20AH?
For technical support, including P6SMB20AH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB20AH requirements.
6.How does Aetrix verify that P6SMB20AH is sourced from the original manufacturer or authorized distributors?
All P6SMB20AH 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 P6SMB20AH meets industry standards.
7.What is the process for return or replacement of P6SMB20AH?
All P6SMB20AH units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB20AH, 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 P6SMB20AH part is unused and in its original packaging.
Return procedure for P6SMB20AH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB20AH Tags
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