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Taiwan Semiconductor Corporation P6SMB22CH
- Part No.:
- P6SMB22CH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB22CH.pdf
- Description:
- 600W, 22V, 10%, BIDIRECTIONAL, T
- Quantity:
- Payment:
- Shipping:
Inventory:3,783
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Product details
Overview
P6SMB22CH from Taiwan Semiconductor is a bidirectional 600W surface-mount transient voltage suppressor (TVS) diode with a breakdown voltage range of 19.8–24.2 V, stand-off voltage of 17.8 V, and clamping voltage of 31.9 V at 19 A peak pulse current. It features glass-passivated junction, AEC-Q101 qualification, and meets ISO 7637-2 Pulse 1/2a/2b/3a/3b for automotive load-dump and EFT immunity.
For engineers reviewing the P6SMB22CH datasheet, P6SMB22CH pinout, P6SMB22CH application, or P6SMB22CH equivalent, key selection criteria include unidirectional/bidirectional configuration (CH = bidirectional), DO-214AA (SMB) package compatibility, 150°C max junction temperature, <1 μA reverse leakage at 17.8 V, and fast sub-1 ps response time to transients.
Technical Context
The P6SMB22CH operates as a bidirectional clamping device, symmetrically suppressing voltage transients in both polarities-critical for protecting CAN, LIN, and sensor interfaces against reverse-polarity surges and ESD. Its glass-passivated junction ensures stable VBR and low leakage (<1 µA @ VWM), while the 10/1000 µs waveform rating supports robust load-dump immunity per ISO 7637-2.
Thermal performance is defined by RθJC = 10 °C/W and RθJA = 55 °C/W, enabling reliable operation up to 150°C junction temperature. The device's 0.092 %/°C VBR temperature coefficient ensures predictable clamping across automotive ambient ranges (−55°C to +125°C).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 19.8 V / 24.2 V - Ensures consistent breakdown initiation across production lots and temperature |
| VWM | 17.8 V - Maximum continuous reverse operating voltage before leakage rises significantly |
| VC @ IPPM | 31.9 V @ 19 A - Clamped voltage during 10/1000 µs surge; defines worst-case stress on protected IC |
| PPPSM | 600 W - Peak pulse power handling capability under standardized transient conditions |
| IR @ VWM | <1 µA - Ultra-low leakage preserves battery life and signal integrity in always-on circuits |
| TJ max | +150 °C - Enables use in under-hood automotive modules without derating |
| Response time | <1.0 ps - Near-instantaneous clamping prevents transient propagation to downstream circuitry |
Pinout & Package
Package: DO-214AA (SMB), surface-mount, cathode band marked on case. Matte tin-plated leads, J-STD-002 solderable, MSL Level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unmarked end) | Current entry terminal in forward bias; common node in bidirectional clamping | Connects to protected line; polarity-independent protection path |
| Cathode (banded end) | Current exit terminal in forward bias; common node in bidirectional clamping | Connects to ground or reference rail; forms symmetrical clamp with anode |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing |
| Glass-passivated junction | Stable electrical parameters over lifetime; eliminates passivation-related drift or leakage increase |
| ISO 7637-2 compliance | Withstands Pulse 1 (inductive switch-off), Pulse 2a/2b (battery disconnect), and Pulse 3a/3b (EFT) waveforms |
| DO-214AA (SMB) footprint | Standardized 4.5 × 3.9 mm outline compatible with high-speed SMT placement and reflow profiles |
| Bidirectional configuration (CH suffix) | Clamps transients regardless of polarity-ideal for AC-coupled or floating signal lines |
Applications
| Automotive Body Control Module (BCM) | Industrial CAN Bus Node |
|---|---|
Use Scenario: Protecting microcontroller GPIOs and LIN transceivers from load-dump and jump-start transients in door modules and lighting controllers. IC Role / Device Role: Bidirectional clamping element placed between signal line and chassis ground. Use Value: Limits voltage to ≤31.9 V during 10/1000 µs 19 A surge, preventing latch-up or oxide damage in 3.3 V/5 V logic interfaces. | Use Scenario: Safeguarding CANH/CANL differential pair against ESD and coupled noise in factory automation gateways. IC Role / Device Role: Line-to-line and line-to-ground TVS on each bus wire prior to CAN transceiver input. Use Value: Sub-1 ps response ensures clamping before transceiver internal protection activates, reducing bit errors during EMC testing. |
| LED Headlamp Driver Input Stage | Smart Sensor Interface (e.g., ABS wheel speed) |
Use Scenario: Suppressing 12 V battery line transients induced by relay switching and alternator ripple in adaptive LED drivers. IC Role / Device Role: Primary front-end protection on DC input rail upstream of buck controller and gate drivers. Use Value: 600 W peak power rating handles repetitive load-dump events without degradation; 17.8 V VWM avoids false triggering during normal 13.5–14.5 V operation. | Use Scenario: Shielding analog front-end amplifiers and ADC inputs in wheel speed sensors exposed to ignition noise and motor commutation spikes. IC Role / Device Role: Low-capacitance bidirectional clamp on sensor signal output line referenced to vehicle ground. Use Value: <1 µA leakage preserves microvolt-level signal integrity; 31.9 V clamping prevents saturation of op-amp stages during 100 V transients. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ22CA | Same DO-214AA package, 22 V nominal VBR, but rated at 600 W with slightly higher VC = 35.5 V @ 17.1 A | Higher clamping voltage reduces margin for 3.3 V logic protection; identical ISO 7637-2 coverage | Select when board layout allows minor clamping voltage trade-off for second-source availability |
| 1.5KE22CA | Through-hole DO-15 package, same 22 V VBR range, 1500 W rating but larger footprint and lower thermal efficiency (RθJA ≈ 100 °C/W) | Not suitable for automated SMT lines; used only in legacy or high-power non-automotive designs | Choose only if DO-214AA footprint is unavailable or mechanical mounting constraints require axial leaded form factor |
Compared with SMBJ22CA and 1.5KE22CA, the P6SMB22CH offers optimal balance of SMT manufacturability, AEC-Q101 validation, and tight 31.9 V clamping-making it preferred for new automotive electronics where space, reliability, and precise voltage limiting are critical.
Availability
P6SMB22CH is available at Aetrix Electronics and suitable for automotive body electronics, industrial CAN networks, LED lighting control systems, and smart sensor interfaces requiring stable component supply across extended temperature and high-reliability environments.
Supply support for P6SMB22CH 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 qualified product lines.
The P6SMB series was designed specifically for automotive and industrial transient suppression-emphasizing robustness against ISO 7637-2 pulses, low leakage, and surface-mount scalability in DO-214AA packaging.
FAQ
What does the 'CH' suffix indicate in P6SMB22CH?
The 'CH' suffix in P6SMB22CH denotes a bidirectional configuration, meaning the device provides symmetrical transient suppression for both positive and negative voltage excursions. This is confirmed in the datasheet's "Devices for Bipolar Applications" section, which explicitly states CH/CAH suffixes apply to bidirectional types across the P6SMB6.8H–P6SMB220AH family. Unlike unidirectional variants (e.g., P6SMB22H), the P6SMB22CH has no polarity-dependent terminals and functions identically in either orientation.
Is P6SMB22CH AEC-Q101 qualified?
Yes, P6SMB22CH is explicitly AEC-Q101 qualified, as stated in the "FEATURES" section of the official Taiwan Semiconductor datasheet (Version A2102). This qualification covers stress tests including high-temperature operating life, temperature cycling, and ESD robustness-ensuring suitability for automotive under-hood and cabin applications where reliability under thermal and electrical stress is mandatory.
What is the maximum clamping voltage of P6SMB22CH and at what current is it specified?
The maximum clamping voltage (VC) of P6SMB22CH is 31.9 V, measured at a peak pulse current (IPPM) of 19 A under the standard 10/1000 µs waveform. This value is listed in the Electrical Specifications table for P6SMB22H/P6SMB22AH variants and applies directly to P6SMB22CH as a member of the same voltage-rated, bidirectional subgroup with identical VBR min/max and test conditions.
Does P6SMB22CH meet ISO 7637-2 requirements?
Yes, P6SMB22CH meets ISO 7637-2 requirements for automotive transient immunity, specifically covering Pulse 1 (inductive load dump), Pulse 2a/2b (battery disconnection), and Pulse 3a/3b (electrical fast transients). This compliance is explicitly cited in the "FEATURES" list and validated by its 600 W peak pulse power rating and clamping performance under the defined test waveforms.
What is the junction-to-ambient thermal resistance (RθJA) of P6SMB22CH?
The junction-to-ambient thermal resistance (RθJA) of P6SMB22CH is 55 °C/W, as specified in the "THERMAL PERFORMANCE" section of the datasheet. This value assumes standard PCB mounting on FR-4 with 1-inch² copper pad area and is critical for calculating allowable power dissipation at elevated ambient temperatures-especially in sealed automotive enclosures where airflow is limited.
P6SMB22CH 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:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 17.8V
- Voltage - Breakdown (Min):
- 19.8V
- Voltage - Clamping (Max) @ Ipp:
- 31.9V
- Current - Peak Pulse (10/1000µs):
- 19A
- 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)
P6SMB22CH FAQ
1.How can I place an order for P6SMB22CH through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB22CH 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 P6SMB22CH reliable?
The price and inventory of P6SMB22CH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB22CH is usually 5 days.
3.What payment methods are accepted for P6SMB22CH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB22CH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB22CH?
P6SMB22CH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB22CH 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 P6SMB22CH?
For technical support, including P6SMB22CH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB22CH requirements.
6.How does Aetrix verify that P6SMB22CH is sourced from the original manufacturer or authorized distributors?
All P6SMB22CH 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 P6SMB22CH meets industry standards.
7.What is the process for return or replacement of P6SMB22CH?
All P6SMB22CH units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB22CH, 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 P6SMB22CH part is unused and in its original packaging.
Return procedure for P6SMB22CH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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