My Inquiry
My Account
Taiwan Semiconductor Corporation P4SMA22CAH
- Part No.:
- P4SMA22CAH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA22CAH.pdf
- Description:
- TVS DIODE 18.8VWM 30.6VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:7,112
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
P4SMA22CAH from Taiwan Semiconductor is a bidirectional 400W surface-mount transient voltage suppressor (TVS) diode in DO-214AC (SMA) package, with a working stand-off voltage of 18.8 V, breakdown voltage range 20.9–23.1 V at 1 mA, and clamping voltage of 30.6 V at 13.7 A (10/1000 µs waveform). It is AEC-Q101 qualified and meets ISO 7637-2 Pulse 1/2a/2b/3a/3b for automotive electronics surge protection.
For engineers reviewing the P4SMA22CAH datasheet, P4SMA22CAH pinout, P4SMA22CAH application, or P4SMA22CAH equivalent, key selection criteria include bidirectional clamping performance, low leakage (<1 µA at 18.8 V), fast response (<1.0 ps), junction temperature range (−55°C to +150°C), and compliance with automotive EMC standards.
Technical Context
The P4SMA22CAH is a glass-passivated, single-die, bidirectional TVS diode designed for unidirectional or bidirectional transient suppression in DC power lines and signal paths. Its electrical characteristics apply identically in both directions due to symmetrical junction construction, enabling robust protection against reverse-polarity surges and bipolar transients without polarity-sensitive layout constraints.
It operates within a −55°C to +150°C junction temperature range and is rated for 400 W peak pulse power (10/1000 µs), with clamping voltage tightly controlled at 30.6 V under 13.7 A impulse current. The device exhibits <1 µA maximum reverse leakage at VWM, ensuring minimal standby power loss in battery-critical systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 18.8 V - Maximum continuous reverse operating voltage before significant leakage begins; defines safe DC bias margin. |
| VBR min/max | 20.9 V / 23.1 V @ 1 mA - Verified breakdown threshold range ensures consistent turn-on across production lots. |
| VC@IPPM | 30.6 V @ 13.7 A (10/1000 µs) - Clamping voltage limits downstream IC stress during ISO 7637-2 Pulse 3b events. |
| IR@VWM | <1 µA - Enables use in ultra-low-power automotive modules where leakage must not load sleep-mode rails. |
| PPPM | 400 W - Sustains high-energy transients common in 12 V/24 V vehicle power networks without degradation. |
| TJ max | +150 °C - Supports placement near hot components (e.g., DC/DC inductors, MOSFETs) in engine bay or powertrain ECUs. |
| Package | DO-214AC (SMA) - Standardized surface-mount outline compatible with automated pick-and-place and reflow processes. |
Pinout & Package
DO-214AC (SMA) package: molded plastic case with matte tin-plated leads, polarity indicated by cathode band (bidirectional operation means band denotes terminal symmetry, not polarity dependence); weight ≈ 0.060 g; moisture sensitivity level 1 per J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bidirectional transient conduction path | Both terminals function identically; no directional mounting required-simplifies PCB layout and reduces assembly errors. |
| Cathode band marking | Reference orientation indicator | Provides visual alignment reference during inspection; does not imply functional polarity in CAH configuration. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated reliability for automotive under-hood and chassis applications including thermal cycling, humidity, and mechanical shock. |
| Glass passivated junction | Enhances long-term stability and resistance to environmental contamination versus epoxy-passivated alternatives. |
| Fast response time <1.0 ps | Clamps ESD and fast-rising transients (e.g., relay bounce, inductive kick) before sensitive logic or analog circuitry is damaged. |
| ISO 7637-2 compliance (Pulse 1/2a/2b/3a/3b) | Meets full suite of automotive supply-line transient immunity requirements for 12 V and 24 V systems. |
| Halogen-free & RoHS compliant | Supports environmentally regulated manufacturing and end-of-life recycling per IEC 61249-2-21 and EU directives. |
Applications
| Automotive Body Control Module (BCM) | Industrial DC/DC Converter Input Stage |
|---|---|
Use Scenario: Protecting LIN bus transceivers and microcontroller I/O from load dump and jump-start induced transients in door modules and lighting controllers. IC Role / Device Role / Timing Role: Bidirectional clamping element placed directly at connector entry point to shunt surge energy before it reaches protected ICs. Use Value: Prevents latch-up or permanent damage to 3.3 V/5 V logic interfaces while maintaining signal integrity during normal operation due to sub-1 µA leakage. | Use Scenario: Safeguarding primary-side controller ICs and gate drivers in isolated 48 V-to-12 V buck-boost converters used in factory automation equipment. IC Role / Device Role / Timing Role: Front-end transient suppressor on input rail, coordinated with upstream fuse and downstream LC filter to meet IEC 61000-4-5 Level 3. Use Value: Limits peak voltage to ≤30.6 V during 1 kV/0.5 Ω surge events, preserving MOSFET VDS margin and preventing controller reset or brownout. |
| LED Headlamp Driver Power Input | Telecom Power Supply Surge Protection |
Use Scenario: Guarding constant-current LED driver ICs against alternator-induced spikes and electrostatic discharge during service access in automotive headlamps. IC Role / Device Role / Timing Role: Low-capacitance TVS placed adjacent to input capacitor to clamp transients without affecting PWM dimming frequency response. Use Value: Enables reliable operation over full automotive temperature range (−40°C to +125°C ambient) with no derating up to +105°C board temperature. | Use Scenario: Protecting AC/DC front-end rectifiers and PFC controllers in telecom rack power supplies exposed to lightning-induced surges on -48 V DC distribution buses. IC Role / Device Role / Timing Role: Secondary-level surge suppressor deployed after primary MOVs to handle residual fast transients that bypass bulk clamping. Use Value: Provides precise 30.6 V clamping with tight VBR tolerance (±5%), reducing overvoltage stress on downstream electrolytic capacitors and bridge rectifiers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ22CA | 600 W rating, SMB package (larger footprint), VC = 35.5 V @ 17.0 A | Higher power handling but larger board area; less suitable for space-constrained automotive modules | Select when system-level surge energy exceeds 400 W or when higher IPPM margin is required. |
| 1.5KE22CA | Through-hole TO-204AA (DO-41), 1500 W rating, VC = 33.2 V @ 45.2 A | Not surface-mountable; incompatible with automated assembly; used in legacy or high-reliability industrial power supplies | Choose only for manual assembly environments or where through-hole mechanical robustness is prioritized over density. |
Compared with SMBJ22CA and 1.5KE22CA, the P4SMA22CAH offers optimal balance of compact DO-214AC packaging, AEC-Q101 qualification, and precise 30.6 V clamping-making it preferred for modern automotive and space-limited industrial DC power protection where automated manufacturing and thermal resilience are critical.
Availability
P4SMA22CAH is available at Aetrix Electronics and suitable for automotive body electronics, industrial DC/DC converter inputs, and LED driver power stages requiring stable component supply, AEC-Q101 compliance, and repeatable surge immunity performance.
Supply support for P4SMA22CAH 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-Q certified production lines.
The P4SMA series is part of TSC's automotive-grade transient suppression portfolio, engineered specifically for robust, high-reliability protection in 12 V/24 V vehicle electrical systems and industrial power interfaces.
FAQ
What is the clamping voltage of the P4SMA22CAH under standard test conditions?
The P4SMA22CAH has a maximum clamping voltage (VC) of 30.6 V when subjected to a 10/1000 µs impulse current of 13.7 A. This value is measured per ANSI/IEEE C62.35 and ensures predictable overvoltage limiting for downstream components in automotive and industrial power circuits. The P4SMA22CAH maintains this clamping performance across its full operating temperature range.
Is the P4SMA22CAH suitable for bidirectional transient suppression?
Yes, the P4SMA22CAH is explicitly designed for bidirectional operation, as confirmed by its "CAH" suffix and documentation stating "electrical characteristics apply in both directions." Its symmetrical breakdown behavior enables protection against both positive and negative polarity transients without requiring polarity-aware PCB layout-making it ideal for AC-coupled lines or systems subject to reverse battery connection events. The P4SMA22CAH achieves this using a single-die, glass-passivated junction structure.
Does the P4SMA22CAH meet automotive qualification standards?
Yes, the P4SMA22CAH is AEC-Q101 qualified and meets ISO 7637-2 Pulse 1, 2a, 2b, 3a, and 3b test requirements for automotive electrical disturbances. It is rated for operation from −55°C to +150°C junction temperature and features moisture sensitivity level 1 (J-STD-020), supporting lead-free reflow assembly. These qualifications make the P4SMA22CAH appropriate for under-hood, chassis, and body control applications where reliability under harsh environmental stress is mandatory.
What is the maximum reverse leakage current for the P4SMA22CAH at its working voltage?
The P4SMA22CAH exhibits a maximum reverse leakage current (IR) of less than 1 µA when biased at its working stand-off voltage (VWM) of 18.8 V. This ultra-low leakage ensures minimal power drain in always-on automotive modules such as CAN nodes or smart sensors, preserving battery life and avoiding false wake-up conditions. The P4SMA22CAH maintains this specification across its full temperature range and lifetime.
What package type does the P4SMA22CAH use, and is it compatible with standard SMT processes?
The P4SMA22CAH uses the DO-214AC (SMA) surface-mount package with matte tin-plated leads compliant with J-STD-002 solderability requirements. Its standardized footprint supports high-speed automated placement and lead-free reflow profiles (per J-STD-020 Level 1). The P4SMA22CAH's moisture sensitivity level 1 eliminates bake requirements prior to assembly, streamlining manufacturing for high-volume automotive and industrial production lines.
P4SMA22CAH Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-214AC, SMA
- Series:
- P4SMA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 18.8V
- Voltage - Breakdown (Min):
- 20.9V
- Voltage - Clamping (Max) @ Ipp:
- 30.6V
- Current - Peak Pulse (10/1000µs):
- 13.7A
- Power - Peak Pulse:
- 400W
- 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-214AC (SMA)
P4SMA22CAH FAQ
1.How can I place an order for P4SMA22CAH through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA22CAH 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 P4SMA22CAH reliable?
The price and inventory of P4SMA22CAH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA22CAH is usually 5 days.
3.What payment methods are accepted for P4SMA22CAH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA22CAH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA22CAH?
P4SMA22CAH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA22CAH 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 P4SMA22CAH?
For technical support, including P4SMA22CAH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA22CAH requirements.
6.How does Aetrix verify that P4SMA22CAH is sourced from the original manufacturer or authorized distributors?
All P4SMA22CAH 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 P4SMA22CAH meets industry standards.
7.What is the process for return or replacement of P4SMA22CAH?
All P4SMA22CAH units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA22CAH, 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 P4SMA22CAH part is unused and in its original packaging.
Return procedure for P4SMA22CAH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4SMA22CAH 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…
