My Inquiry
My Account
Taiwan Semiconductor Corporation P6SMB22AH
- Part No.:
- P6SMB22AH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB22AH.pdf
- Description:
- TVS DIODE 18.8VWM 30.6VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,210
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
P6SMB22AH from Taiwan Semiconductor is a unidirectional 600W surface-mount transient voltage suppressor (TVS) diode with a breakdown voltage range of 20.9–23.1 V, clamping voltage of 30.6 V at 20 A peak pulse current, and stand-off voltage of 18.8 V. It features glass passivated junction, AEC-Q101 qualification, and is designed for automotive ESD and load-dump protection in power supply rails and signal lines.
For engineers reviewing the P6SMB22AH datasheet, P6SMB22AH pinout, P6SMB22AH application, or P6SMB22AH equivalent, key selection criteria include its 18.8 V working voltage, 30.6 V clamping performance under 10/1000 µs surge, DO-214AA (SMB) package compatibility, and compliance with ISO 7637-2 Pulse 1/2a/2b/3a/3b for automotive transients.
Technical Context
The P6SMB22AH operates as a unidirectional avalanche diode, triggered when reverse voltage exceeds its minimum breakdown voltage of 20.9 V at 1 mA test current. Its low leakage (<1 µA at 18.8 V) ensures minimal standby power loss in always-on circuits.
Thermally, it delivers 600 W peak pulse power handling with junction-to-case thermal resistance of 10 °C/W and junction-to-ambient of 55 °C/W, enabling reliable operation up to 150 °C junction temperature in compact PCB layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 20.9 V / 23.1 V - Ensures consistent avalanche initiation across production lots at 1 mA test current |
| VWM | 18.8 V - Maximum continuous reverse operating voltage before significant leakage begins |
| VC @ IPPM | 30.6 V at 20 A - Clamping voltage limits downstream IC stress during 10/1000 µs transients |
| PPPSM | 600 W - Peak pulse power rating per single 10/1000 µs waveform, derated above 25 °C ambient |
| IR @ VWM | <1 µA - Ultra-low reverse leakage preserves battery life and signal integrity in high-impedance nodes |
| TJ max | +150 °C - Enables use in under-hood automotive environments without thermal shutdown |
| Package | DO-214AA (SMB) - Standardized surface-mount outline with 0.090 g mass and J-STD-002 solderability |
Pinout & Package
DO-214AA (SMB) package: molded plastic case with matte tin-plated leads, cathode band marking polarity, UL 94V-0 flammability rating, and JESD201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side (e.g., ground or return path) in unidirectional configuration |
| Cathode | Avalanche clamping terminal | Connected to protected line (e.g., 12 V rail or CAN bus); marked by band on package body |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD robustness |
| Glass passivated junction | Enhances long-term stability and moisture resistance vs. epoxy-passivated alternatives |
| ISO 7637-2 compliance | Meets Pulse 1 (inductive load dump), Pulse 2a/2b (switching transients), and Pulse 3a/3b (line impedance coupling) |
| Fast response time | <1.0 ps rise time from 0 V to VBR min - clamps before sensitive logic can be damaged |
| Moisture sensitivity level 1 | No floor-life limitation or bake requirement prior to reflow - simplifies SMT manufacturing |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs against load-dump transients up to ±100 V per ISO 7637-2 Pulse 5a. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power input and ground to clamp surges before reaching DC-DC converters and microcontrollers. Use Value: Limits voltage seen by downstream components to ≤30.6 V during 600 W transients, preventing latch-up or gate oxide damage in 3.3 V/5 V logic. | Use Scenario: Shielding analog sensor outputs (e.g., pressure, temperature) from ESD events in factory automation systems. IC Role / Device Role / Timing Role: Low-capacitance TVS installed at connector interface to shunt fast transients before signal conditioning amplifiers. Use Value: Sub-1 µA leakage avoids DC offset errors; 30.6 V clamping prevents saturation of rail-to-rail op-amps powered from 24 V supplies. |
| LED Driver Overvoltage Suppression | RS-485 Transceiver Line Protection |
Use Scenario: Safeguarding constant-current LED drivers in vehicle lighting modules from alternator-induced spikes. IC Role / Device Role / Timing Role: Mounted across driver output terminals to absorb energy from inductive kickback during PWM switching. Use Value: Withstands 100 A IFSM surge and clamps at 30.6 V, preserving MOSFET gate integrity and maintaining LED current regulation. | Use Scenario: Protecting half-duplex RS-485 transceivers (e.g., THVD1550) from EFT bursts in building control networks. IC Role / Device Role / Timing Role: Bidirectional-capable variant (P6SMB22AH used in unidirectional mode with external bias) placed on A/B lines relative to GND. Use Value: 30.6 V clamping ensures transceiver common-mode range stays within ±12 V specification, avoiding data corruption during 4 kV EFT events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ22A | Same DO-214AC (SMA) package; 600 W rating; VBR = 24.4–26.9 V; VC = 35.5 V @ 17.1 A | Higher clamping voltage and wider VBR tolerance; less precise voltage matching for 22 V nominal rails | Select SMAJ22A only if board layout allows SMA footprint and higher clamping is acceptable |
| 1.5SMC22A | DO-214AB (SMC) package; 1500 W rating; VBR = 23.1–25.5 V; VC = 33.2 V @ 45.2 A | Larger footprint and higher surge capacity; over-specified for 600 W requirements; may require PCB redesign | Choose 1.5SMC22A only when system-level testing demands >1000 W surge margin or extended lifetime under repeated transients |
Compared with SMAJ22A and 1.5SMC22A, P6SMB22AH offers tighter VBR tolerance (±5%), lower clamping voltage (30.6 V vs. ≥33.2 V), and optimal fit for space-constrained SMB footprints in automotive modules where precise 22 V rail protection is required.
Availability
P6SMB22AH is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor interfaces, LED driver circuits, and RS-485 communication systems requiring stable component supply and AEC-Q101-compliant transient protection.
Supply support for P6SMB22AH 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 automotive-qualified components since 1979.
The P6SMB22AH belongs to TSC's AEC-Q101-qualified P6SMBx(A)H series, engineered specifically for robust transient immunity in automotive power distribution, body electronics, and infotainment subsystems.
FAQ
What is the maximum clamping voltage of the P6SMB22AH under standard test conditions?
The P6SMB22AH has a maximum clamping voltage (VC) of 30.6 V when subjected to a 10/1000 µs peak pulse current of 20 A, as specified in the electrical characteristics table. This value is measured at TA = 25 °C and defines the upper voltage limit imposed on protected circuitry during surge events. The P6SMB22AH maintains this clamping performance across its full operating temperature range.
Is the P6SMB22AH suitable for bidirectional transient suppression?
No - the P6SMB22AH is a unidirectional TVS diode intended for DC-biased applications such as 12 V or 24 V power rails. For bidirectional protection (e.g., AC lines or data buses), TSC offers the P6SMB22CAH variant with symmetrical breakdown in both directions. Using P6SMB22AH in reverse-biased configurations risks premature conduction or failure due to its asymmetric structure.
Does the P6SMB22AH meet automotive reliability standards?
Yes - the P6SMB22AH is explicitly qualified to AEC-Q101 for stress testing including temperature cycling, high-temperature reverse bias (HTRB), and ESD. It also meets ISO 7637-2 Pulse 1/2a/2b/3a/3b for automotive electrical transients and carries J-STD-020 moisture sensitivity level 1, eliminating bake requirements before reflow. These qualifications confirm its suitability for under-hood and chassis-mounted automotive modules.
What is the thermal resistance profile of the P6SMB22AH?
The P6SMB22AH has a junction-to-case thermal resistance (RθJC) of 10 °C/W and junction-to-ambient resistance (RθJA) of 55 °C/W at TA = 25 °C. These values enable effective heat dissipation in typical SMB footprint layouts with standard copper pour. Derating curves in the datasheet show that peak pulse power drops linearly above 25 °C ambient, down to ~400 W at 85 °C ambient.
How does the P6SMB22AH compare to the P6SMB22H variant?
The P6SMB22AH offers tighter breakdown voltage tolerance (20.9–23.1 V, ±5%) versus P6SMB22H (19.8–24.2 V, ±10%), resulting in more predictable clamping behavior near nominal 22 V rails. Both share identical package, power rating, and thermal specs, but P6SMB22AH's narrower VBR range improves design margin in safety-critical automotive applications where overvoltage thresholds must be tightly controlled.
P6SMB22AH 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):
- 18.8V
- Voltage - Breakdown (Min):
- 20.9V
- Voltage - Clamping (Max) @ Ipp:
- 30.6V
- Current - Peak Pulse (10/1000µs):
- 20A
- 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)
P6SMB22AH FAQ
1.How can I place an order for P6SMB22AH through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB22AH 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 P6SMB22AH reliable?
The price and inventory of P6SMB22AH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB22AH is usually 5 days.
3.What payment methods are accepted for P6SMB22AH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB22AH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB22AH?
P6SMB22AH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB22AH 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 P6SMB22AH?
For technical support, including P6SMB22AH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB22AH requirements.
6.How does Aetrix verify that P6SMB22AH is sourced from the original manufacturer or authorized distributors?
All P6SMB22AH 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 P6SMB22AH meets industry standards.
7.What is the process for return or replacement of P6SMB22AH?
All P6SMB22AH units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB22AH, 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 P6SMB22AH part is unused and in its original packaging.
Return procedure for P6SMB22AH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB22AH 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…
