My Inquiry
My Account
Taiwan Semiconductor Corporation P4SMA15CH
- Part No.:
- P4SMA15CH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA15CH.pdf
- Description:
- 400W, 15V, 10%, BIDIRECTIONAL, T
- Quantity:
- Payment:
- Shipping:
Inventory:6,190
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
P4SMA15CH from Taiwan Semiconductor is a unidirectional 400W surface-mount transient voltage suppressor (TVS) diode with a 13.5–16.5V breakdown voltage (VBR), 12.1V working stand-off voltage (VWM), and 22.0V clamping voltage (VC) at 19.0A peak pulse current. It features glass passivated junction, AEC-Q101 qualification, and meets ISO 7637-2 Pulse 1/2a/2b/3a/3b for automotive power line protection.
For engineers reviewing the P4SMA15CH datasheet, P4SMA15CH pinout, P4SMA15CH application, or P4SMA15CH equivalent, this device serves as a robust, RoHS-compliant, halogen-free TVS for DC/DC converter input rail protection, SMPS overvoltage suppression, and automotive ECU power supply transients - where fast response (<1.0ps), low leakage (<1µA @ VWM), and DO-214AC package compatibility are critical.
Technical Context
The P4SMA15CH operates as a unidirectional avalanche diode, designed to clamp transient overvoltages above its VWM of 12.1V while maintaining <1µA reverse leakage at that voltage. Its 22.0V clamping voltage at 19.0A (10/1000µs waveform) ensures downstream circuit protection under standardized surge conditions.
It uses a single-die DO-214AC (SMA) package with matte tin-plated leads, rated for -55°C to +150°C junction temperature, and complies with JESD201 Class 2 whisker resistance and J-STD-020 Moisture Sensitivity Level 1 - enabling direct placement in high-reliability automotive and industrial PCB assemblies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR min/max | 13.5V / 16.5V - defines guaranteed avalanche conduction onset range at 1.0mA test current |
| VWM | 12.1V - maximum continuous reverse operating voltage before significant leakage begins |
| VC @ IPPM | 22.0V @ 19.0A - clamped voltage during 10/1000µs surge, limiting stress on protected ICs |
| PPPM | 400W - peak pulse power handling capability per single non-repetitive surge event |
| IR @ VWM | <1µA - ensures minimal standby power loss and signal integrity in high-impedance circuits |
| TJ max | +150°C - enables operation in under-hood automotive environments and thermally constrained enclosures |
| Package | DO-214AC (SMA) - industry-standard SMD outline compatible with automated pick-and-place and reflow |
Pinout & Package
DO-214AC (SMA) package: molded epoxy case with cathode band marking; matte tin-plated leads; polarity indicated by band (cathode); weight ≈0.060g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient return path | Connected to ground or low-impedance return plane; completes clamping loop during overvoltage events |
| Cathode | Protected line connection | Connected to the line being protected (e.g., 12V rail); conducts avalanche current when VIN exceeds VBR |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per stress test plan |
| Glass passivated junction | Enhances long-term stability and moisture resistance versus epoxy-passivated alternatives |
| Fast response time | <1.0ps - limits voltage overshoot before clamping engages, protecting sensitive gate drivers and microcontrollers |
| ISO 7637-2 compliance | Withstands Pulse 1 (inductive load dump), Pulse 2a/2b (switching transients), and Pulse 3a/3b (line capacitance discharge) |
| Halogen-free & RoHS | Meets IEC 61249-2-21 and EU RoHS Directive 2011/65/EU for environmentally compliant manufacturing |
Applications
| Automotive Body Control Module (BCM) | Industrial DC/DC Converter Input |
|---|---|
Use Scenario: Protects 12V power input of BCM against load dump and alternator ripple transients per ISO 7637-2. IC Role / Device Role: Unidirectional TVS placed between battery rail and DC/DC input filter capacitor. Use Value: Clamps surges to ≤22.0V, preventing damage to upstream PMICs and MCU power supplies without adding series impedance. | Use Scenario: Shields isolated buck converter primary-side input from switching noise and external EFT bursts. IC Role / Device Role: Transient suppressor across input terminals, shunting energy to ground during 10/1000µs pulses. Use Value: 400W peak power rating sustains repeated 19.0A surges without degradation, supporting EN 61000-4-4 compliance. |
| LED Driver Power Supply | Telecom Power Interface |
Use Scenario: Guards constant-current LED driver input against inductive kickback from relay-controlled dimming circuits. IC Role / Device Role: Standoff-rated TVS (VWM = 12.1V) placed upstream of input EMI filter. Use Value: Sub-1µA leakage avoids false triggering of under-voltage lockout while enabling fast clamping of >100V spikes. | Use Scenario: Provides secondary-side surge protection on 48V telecom power interface boards exposed to lightning-induced surges. IC Role / Device Role: Primary transient suppression element on DC input bus before POL regulator. Use Value: DO-214AC footprint allows dense layout; 22.0V clamping ensures downstream 3.3V/5V logic remains within absolute maximum ratings. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ15A | 600W rating, higher VC = 24.4V @ 24.5A, SMB package (larger footprint) | Better suited for higher-energy surges; less space-constrained designs | Select SMBJ15A if system-level surge testing requires >400W margin or board layout permits larger SMB outline |
| 1.5SMC15A | 1500W rating, VC = 24.4V @ 61.5A, SMC package (3.5mm × 7.0mm) | Designed for industrial mains-level transients; not AEC-Q101 qualified | Choose 1.5SMC15A only for non-automotive, high-energy AC/DC front-end protection where qualification is not required |
Compared with SMBJ15A and 1.5SMC15A, the P4SMA15CH offers optimal balance of AEC-Q101 compliance, DO-214AC footprint efficiency, and 400W surge capacity - making it preferred for space-limited automotive and embedded DC power rails where qualification and thermal performance are prioritized over raw power headroom.
Availability
P4SMA15CH is available at Aetrix Electronics and suitable for automotive body electronics, industrial DC/DC converters, LED driver power supplies, and telecom power interfaces requiring stable component supply and full traceability.
Supply support for P4SMA15CH 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, MOSFETs, and power management devices.
The P4SMA15CH belongs to TSC's P4SMAxH family of AEC-Q101-qualified surface-mount TVS diodes, engineered specifically for automotive and industrial power line transient suppression where reliability, compactness, and standardized surge immunity are mandatory.
FAQ
What is the polarity configuration of the P4SMA15CH?
The P4SMA15CH is a unidirectional TVS diode, with cathode marked by a band on the DO-214AC package. It conducts avalanche current only when the cathode is biased positive relative to the anode - making it suitable for DC rail protection where polarity is fixed. This differs from bidirectional variants like P4SMA15CH (which do not exist in this family; CH suffix denotes unidirectional).
Does the P4SMA15CH meet automotive qualification standards?
Yes, the P4SMA15CH is AEC-Q101 qualified and tested per the full stress test schedule, including HTGB, H3TRB, TC, and mechanical shock. It also meets ISO 7637-2 Pulse 1, 2a, 2b, 3a, and 3b requirements - confirming suitability for automotive power network protection in modules such as ECUs, lighting controllers, and infotainment power supplies.
What is the maximum clamping voltage of the P4SMA15CH under standard surge conditions?
The P4SMA15CH has a maximum clamping voltage (VC) of 22.0V at 19.0A peak pulse current using the 10/1000µs waveform. This value is measured per ANSI/IEEE C62.35 and guarantees that protected downstream components will not experience more than 22.0V during standardized surge events - critical for safeguarding 3.3V, 5V, and 12V logic and power ICs.
Can the P4SMA15CH be used in bidirectional signal lines?
No, the P4SMA15CH is strictly unidirectional and must not be used on AC or bidirectional signal paths. For bidirectional transient suppression, TSC offers the P4SMA15CAH variant (not P4SMA15CH), which features symmetrical breakdown in both directions and uses a different marking code and electrical specification set. Using P4SMA15CH on AC lines risks failure due to forward conduction during negative half-cycles.
What is the moisture sensitivity level (MSL) and reflow profile compatibility of the P4SMA15CH?
The P4SMA15CH has a moisture sensitivity level (MSL) of Level 1 per J-STD-020, meaning it is not humidity-sensitive and can be stored indefinitely at ambient conditions without dry pack requirements. It supports standard lead-free reflow profiles up to 260°C peak, with matte tin-plated leads meeting solderability requirements per J-STD-002 - simplifying integration into high-volume SMT assembly lines.
P4SMA15CH 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):
- 12.1V
- Voltage - Breakdown (Min):
- 13.5V
- Voltage - Clamping (Max) @ Ipp:
- 22V
- Current - Peak Pulse (10/1000µs):
- 19A
- 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)
P4SMA15CH FAQ
1.How can I place an order for P4SMA15CH through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA15CH 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 P4SMA15CH reliable?
The price and inventory of P4SMA15CH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA15CH is usually 5 days.
3.What payment methods are accepted for P4SMA15CH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA15CH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA15CH?
P4SMA15CH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA15CH 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 P4SMA15CH?
For technical support, including P4SMA15CH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA15CH requirements.
6.How does Aetrix verify that P4SMA15CH is sourced from the original manufacturer or authorized distributors?
All P4SMA15CH 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 P4SMA15CH meets industry standards.
7.What is the process for return or replacement of P4SMA15CH?
All P4SMA15CH units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA15CH, 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 P4SMA15CH part is unused and in its original packaging.
Return procedure for P4SMA15CH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4SMA15CH 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…
