My Inquiry
My Account
Taiwan Semiconductor Corporation P4SMA30CH
- Part No.:
- P4SMA30CH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA30CH.pdf
- Description:
- 400W, 30V, 10%, BIDIRECTIONAL, T
- Quantity:
- Payment:
- Shipping:
Inventory:8,404
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
P4SMA30CH from Taiwan Semiconductor is a bidirectional surface-mount transient voltage suppressor (TVS) diode in DO-214AC (SMA) package, rated for 400W peak pulse power, 30V breakdown voltage (27–33V), and clamping voltage of 43.5V at 9.6A (10/1000μs waveform), designed to protect automotive-grade DC/DC converters and SMPS inputs against ISO 7637-2 transients.
For engineers reviewing the P4SMA30CH datasheet, P4SMA30CH pinout, P4SMA30CH application, or P4SMA30CH equivalent, this device delivers AEC-Q101 qualification, <1.0ps response time, <1μA leakage at 24.3V, and bidirectional surge immunity - critical for robust ESD and load-dump protection in harsh automotive environments.
Technical Context
The P4SMA30CH implements a glass-passivated silicon junction optimized for fast clamping under high-energy transients. Its bidirectional configuration enables symmetrical suppression of both positive and negative polarity surges without external polarity management.
It operates across –55°C to +150°C junction temperature range, meets JESD201 Class 2 whisker resistance, and complies with ISO 7637-2 Pulse 1, 2a, 2b, 3a, and 3b waveforms - confirming suitability for 12V/24V vehicle electrical systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR min/max | 27.0 V / 33.0 V at 1.0 mA test current - defines reliable conduction onset under bidirectional surge conditions |
| VWM | 24.3 V - maximum continuous reverse operating voltage before leakage exceeds 1 µA |
| VC @ IPPM | 43.5 V at 9.6 A (10/1000 μs) - clamped voltage seen by protected circuit during worst-case surge |
| PPPM | 400 W - peak pulse power handling capacity per single non-repetitive event |
| IR @ VWM | <1 µA - ultra-low leakage ensures minimal standby power loss in always-on systems |
| TJ max | +150 °C - enables operation in under-hood automotive locations without derating |
Pinout & Package
Package: DO-214AC (SMA), surface-mount, bidirectional, cathode band not applicable (symmetrical terminals).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (bidirectional) | Surge current path | Both terminals function identically - no polarity assignment required; connects across protected line and ground |
| Case | Thermal path | DO-214AC molded body provides mechanical stability and UL 94V-0 flame resistance; no electrical connection |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive use including temperature cycling, humidity bias, and mechanical shock per stress test requirements |
| Fast response time <1.0 ps | Clamps transients before downstream ICs experience overvoltage stress - critical for protecting sensitive gate drivers and controllers |
| Meets ISO 7637-2 Pulse 1/2a/2b/3a/3b | Guarantees immunity to real-world automotive load dump, alternator ripple, and inductive switching events |
| Glass passivated junction | Enhances long-term reliability and moisture resistance versus epoxy-passivated alternatives in humid environments |
Applications
| Automotive DC/DC Converters | Industrial SMPS Inputs |
|---|---|
Use Scenario: Protection of 12V-to-5V/3.3V buck converters in ADAS camera modules exposed to battery rail transients. IC Role / Device Role / Timing Role: Bidirectional TVS placed across input rails to clamp ISO 7637-2 Pulse 5a (load dump) to ≤43.5V. Use Value: Prevents latch-up or permanent damage to controller ICs during 120V/100ms load dump events without requiring active crowbar circuits. | Use Scenario: Input surge protection for DIN-rail mounted 48V industrial SMPS feeding PLC I/O modules. IC Role / Device Role / Timing Role: Standoff-rated TVS absorbing repetitive 1kV/0.5J surges per IEC 61000-4-5 Level 3. Use Value: Maintains system uptime by limiting voltage excursion to 43.5V while dissipating 400W peak energy - eliminating need for bulkier MOV-based solutions. |
| LED Driver Power Stages | On-Board Charger (OBC) Auxiliary Supplies |
Use Scenario: Transient suppression on constant-current LED driver input in commercial lighting fixtures subject to lightning-induced surges. IC Role / Device Role / Timing Role: Fast-clamping TVS placed upstream of bridge rectifier to limit reverse recovery spikes and line transients. Use Value: Enables compliance with IEC 61547 immunity requirements using a single 400W device instead of cascaded RC+TVS networks. | Use Scenario: Protection of 12V auxiliary supply derived from high-voltage OBC DC link in EV charging systems. IC Role / Device Role / Timing Role: Bidirectional TVS safeguarding isolated DC/DC controller against coupled transients from HV side switching noise. Use Value: Ensures functional safety integrity by maintaining <1µA leakage at 24.3V - preventing false triggering of undervoltage lockout. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ30CA | 600W rating, SMB package (larger footprint), 43.5V clamping at 13.8A | Higher power margin but requires PCB layout change due to larger SMB footprint | Select when higher surge margin is needed and board space allows SMB package |
| 1.5SMC33CA | 1500W rating, SMC package (3.9mm × 2.5mm), 53.3V clamping at 28.1A | Over-specified power handling; clamping voltage 9.8V higher than P4SMA30CH | Choose only if legacy design uses SMC or extreme surge levels (>1kW) are expected |
Compared with SMBJ30CA and 1.5SMC33CA, the P4SMA30CH offers optimal balance of AEC-Q101 compliance, compact DO-214AC footprint, and precise 43.5V clamping - making it preferred for space-constrained automotive modules where leakage and thermal performance are critical.
Availability
P4SMA30CH is available at Aetrix Electronics and suitable for automotive DC/DC converters, industrial SMPS inputs, and LED driver power stages requiring stable component supply with full traceability and lifecycle continuity.
Supply support for P4SMA30CH 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 analog and discrete semiconductor manufacturer headquartered in Hsinchu, Taiwan, specializing in TVS diodes, rectifiers, and power MOSFETs for automotive and industrial markets.
The P4SMA30CH belongs to TSC's AEC-Q101-qualified P4SMAxH series - engineered specifically for bidirectional transient suppression in 12V/24V automotive subsystems with stringent reliability and thermal performance requirements.
FAQ
What is the breakdown voltage range of the P4SMA30CH?
The P4SMA30CH has a guaranteed breakdown voltage range of 27.0 V to 33.0 V at 1.0 mA test current, measured per ANSI/IEEE C62.35. This range ensures consistent turn-on behavior across production lots and temperature extremes, enabling predictable clamping performance in automotive applications where voltage tolerances are tight.
Is the P4SMA30CH unidirectional or bidirectional?
The P4SMA30CH is a bidirectional TVS diode, indicated by the "CH" suffix per Taiwan Semiconductor's ordering nomenclature. It provides symmetrical clamping for both positive and negative transients without polarity sensitivity - ideal for protecting AC-coupled lines or differential bus interfaces where polarity reversal may occur.
Does the P4SMA30CH meet automotive qualification standards?
Yes, the P4SMA30CH is AEC-Q101 qualified and explicitly tested to meet ISO 7637-2 Pulse 1, 2a, 2b, 3a, and 3b transient immunity requirements. Its construction includes glass-passivated junctions, JESD201 Class 2 whisker resistance, and moisture sensitivity level 1 - all mandatory for under-hood automotive deployment.
What is the clamping voltage of the P4SMA30CH under standard surge conditions?
The P4SMA30CH clamps to a maximum of 43.5 V at 9.6 A peak impulse current using the standardized 10/1000 μs double-exponential waveform. This value is measured per REA-defined test conditions and represents the upper bound voltage imposed on protected circuitry during worst-case surge events.
Can the P4SMA30CH be used in place of unidirectional TVS diodes?
No - the P4SMA30CH is strictly bidirectional and lacks anode/cathode polarity marking. Substituting it for a unidirectional TVS (e.g., P4SMA30H) would result in incorrect forward conduction behavior in DC-biased circuits. Always verify directionality requirements in the target application schematic before selecting P4SMA30CH.
P4SMA30CH 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):
- 24.3V
- Voltage - Breakdown (Min):
- 27V
- Voltage - Clamping (Max) @ Ipp:
- 43.5V
- Current - Peak Pulse (10/1000µs):
- 9.6A
- 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)
P4SMA30CH FAQ
1.How can I place an order for P4SMA30CH through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA30CH 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 P4SMA30CH reliable?
The price and inventory of P4SMA30CH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA30CH is usually 5 days.
3.What payment methods are accepted for P4SMA30CH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA30CH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA30CH?
P4SMA30CH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA30CH 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 P4SMA30CH?
For technical support, including P4SMA30CH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA30CH requirements.
6.How does Aetrix verify that P4SMA30CH is sourced from the original manufacturer or authorized distributors?
All P4SMA30CH 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 P4SMA30CH meets industry standards.
7.What is the process for return or replacement of P4SMA30CH?
All P4SMA30CH units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA30CH, 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 P4SMA30CH part is unused and in its original packaging.
Return procedure for P4SMA30CH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4SMA30CH 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…
