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Vishay General Semiconductor - Diodes Division P4SMA24CAHE3/61
- Part No.:
- P4SMA24CAHE3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA24CAHE3/61.pdf
- Description:
- TVS DIODE 20.5VWM 33.2VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:8,308
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Product details
Overview
P4SMA24CAHE3/61 from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMA (DO-214AC) package, designed for clamping voltage transients on signal and power lines. It features a 24 V standoff voltage (VWM), 26.7–29.5 V breakdown voltage (VBR) at 1 mA, 33.2 V maximum clamping voltage at 12 A peak pulse current, and 400 W peak pulse power rating with 10/1000 µs waveform - used to protect MOSFETs, ICs, and sensor interfaces in automotive and industrial control systems.
For engineers reviewing the P4SMA24CAHE3/61 datasheet, P4SMA24CAHE3/61 pinout, P4SMA24CAHE3/61 application, or P4SMA24CAHE3/61 equivalent, this device delivers AEC-Q101 qualified transient suppression for bidirectional signal lines where low clamping voltage, fast response (<1 ns), and MSL Level 1 reflow compatibility are required.
Technical Context
The P4SMA24CAHE3/61 operates as a symmetrical avalanche diode, conducting in both directions when transient voltage exceeds its breakdown threshold. Its glass-passivated junction ensures stable VBR tolerance (±5%) and low incremental surge resistance, enabling consistent clamping performance across repetitive surges.
Designed for surface-mount assembly on standard 0.2" × 0.2" copper pads, it supports automated placement and withstands peak reflow temperatures up to 260 °C (MSL Level 1). The device meets UL 94 V-0 flammability requirements and is rated for operation from –65 °C to +150 °C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 20.5 V - Maximum continuous reverse working voltage before conduction begins; defines safe operating margin below clamping threshold. |
| VBR (Breakdown Voltage) | 22.8–25.2 V at 1 mA - Confirmed avalanche onset range; ensures predictable turn-on during transients. |
| VC (Clamping Voltage) | 33.2 V at 12 A IPPM - Peak voltage seen by protected circuit under 10/1000 µs surge; critical for IC-level overvoltage margining. |
| PPPM (Peak Pulse Power) | 400 W - Sustained energy absorption capability per 10/1000 µs waveform; enables robust protection against IEC 61000-4-5 induced surges. |
| ID (Reverse Leakage) | 1.0 µA at VWM - Ultra-low leakage preserves signal integrity and minimizes standby power loss in high-impedance circuits. |
| TJ max. | +150 °C - Maximum junction temperature rating; supports reliable operation in under-hood automotive and industrial environments. |
| AEC-Q101 Qualified | Yes - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per AEC specification. |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, bidirectional configuration with no polarity marking - terminals are symmetrical and interchangeable.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Transient conduction path | Both terminals function identically; conducts bidirectionally upon exceeding VBR in either polarity - eliminates orientation concerns during placement. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or differential signal lines without external polarity management. |
| 400 W peak pulse power (10/1000 µs) | Supports compliance with IEC 61000-4-5 Level 4 surge immunity requirements in industrial and automotive subsystems. |
| MSL Level 1, 260 °C peak reflow | Permits use in standard lead-free SMT processes without pre-baking or special handling. |
| AEC-Q101 qualification (HE3 suffix) | Confirms suitability for automotive powertrain, body electronics, and ADAS modules requiring long-term field reliability. |
| Glass passivated junction | Ensures stable VBR over lifetime and improved resistance to humidity-induced parameter drift versus epoxy-passivated alternatives. |
Applications
| Automotive Sensor Interface Protection | Industrial CAN Bus Line Protection |
|---|---|
Use Scenario: Protecting analog output lines of pressure, temperature, or position sensors in engine control units exposed to load dump and inductive switching noise. IC Role / Device Role / Timing Role: Bidirectional TVS clamping element placed directly at connector entry point to shunt transients before reaching precision ADC front-end. Use Value: Limits voltage excursion to ≤33.2 V during 12 A surge, preserving sensor signal fidelity and preventing ADC saturation or latch-up. |
Use Scenario: Safeguarding CAN_H/CAN_L differential pair in factory automation controllers subjected to EFT bursts and ground bounce. IC Role / Device Role / Timing Role: Low-capacitance (≈100 pF), symmetrical clamping device mounted across bus lines near transceiver IC. Use Value: Maintains signal integrity with <1 ns response and prevents transceiver damage while meeting ISO 11898-2 EMC immunity targets. |
| Consumer Power Supply Input Stage | Telecom DSL Line Surge Protection |
Use Scenario: Secondary-side DC input protection for USB-C PD adapters and smart home hubs receiving unregulated 12–24 V rail inputs. IC Role / Device Role / Timing Role: Standoff-rated TVS placed between input capacitor and DC-DC controller to absorb line-induced spikes. Use Value: Withstands repeated 400 W surges without degradation, extending adapter MTBF and eliminating need for redundant MOV+TVS staging. |
Use Scenario: Front-end protection of ADSL/VDSL line interface ICs in residential gateways exposed to lightning-induced longitudinal surges. IC Role / Device Role / Timing Role: Bidirectional suppressor bridging tip/ring lines ahead of transformer coupling network. Use Value: Clamps common-mode surges to <33.2 V while maintaining <1.0 µA leakage - avoids false triggering of line monitoring circuits. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ24CA | Same VWM/VBR/VC specs but SMB (DO-214AA) package - 2.5 mm wider body, higher thermal mass, 600 W PPPM rating. | Better suited for higher-energy surges or PCBs with larger copper pour; less space-constrained than SMA layout. | Select SMBJ24CA when board area permits and surge energy exceeds 400 W duty cycle limits. |
| 1.5KE24CA | Through-hole DO-201AE package, same electrical specs, 1500 W PPPM rating, higher IFSM (200 A). | Used in legacy industrial power supplies and telecom line cards where through-hole assembly remains standard. | Choose 1.5KE24CA only for through-hole designs or where higher single-pulse robustness is mandatory. |
Compared with SMBJ24CA and 1.5KE24CA, the P4SMA24CAHE3/61 offers optimal balance of miniaturization, AEC-Q101 qualification, and process compatibility - making it the preferred choice for new automotive and space-constrained industrial SMT designs requiring certified reliability.
Availability
P4SMA24CAHE3/61 is available at Aetrix Electronics and suitable for automotive sensor modules, industrial CAN networks, and consumer power supply input stages requiring stable component supply, AEC-Q101 traceability, and RoHS-compliant manufacturing.
Supply support for P4SMA24CAHE3/61 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
Vishay General Semiconductor is a global leader in discrete semiconductors, specializing in diodes, rectifiers, and protection devices with emphasis on high-reliability, automotive-qualified components.
The P4SMA Series was developed specifically for surface-mount transient suppression in harsh-environment applications - combining low-profile packaging, AEC-Q101 validation, and precise clamping performance for next-generation automotive and industrial electronics.
FAQ
What is the clamping voltage of P4SMA24CAHE3/61 at its rated peak pulse current?
The P4SMA24CAHE3/61 has a maximum clamping voltage (VC) of 33.2 V at 12 A peak pulse current (IPPM) under the standard 10/1000 µs waveform. This value is measured per Figure 1 in Vishay Document 88367 and defines the upper voltage limit imposed on protected circuitry during surge events - critical for ensuring downstream ICs remain within absolute maximum ratings.
Is P4SMA24CAHE3/61 suitable for automotive applications?
Yes, P4SMA24CAHE3/61 is AEC-Q101 qualified (indicated by the HE3 suffix), meaning it has passed stress tests including temperature cycling, high-temperature reverse bias, and ESD per automotive reliability standards. It is explicitly recommended for engine control units, body electronics, and ADAS sensor interfaces where transient immunity and long-term field stability are mandatory.
How does the bidirectional design of P4SMA24CAHE3/61 affect PCB layout?
The P4SMA24CAHE3/61 has no polarity marking and identical terminal behavior in both directions, simplifying PCB layout by eliminating orientation checks during automated placement. Engineers can route either terminal to either side of a differential pair or AC signal path without functional impact - reducing assembly errors and supporting symmetric layout for balanced EMI performance.
What is the thermal resistance of P4SMA24CAHE3/61, and how does it impact power derating?
P4SMA24CAHE3/61 has a typical junction-to-ambient thermal resistance (RθJA) of 120 °C/W when mounted on minimum recommended 0.2" × 0.2" copper pads. This value requires derating of its 3.3 W steady-state power dissipation above 25 °C ambient, per Figure 2 in the datasheet - for example, to ~2.2 W at 75 °C ambient - ensuring safe operation in enclosed enclosures or high-temperature environments.
Does P4SMA24CAHE3/61 meet UL recognition requirements?
Yes, P4SMA24CAHE3/61 carries Underwriters Laboratory Recognition (QVGQ2) under UL 497B for protector classification, with file number E136766. This certification confirms compliance for use in primary and secondary circuit protection across consumer, industrial, and telecom equipment - supporting safety agency approvals without additional system-level testing.
P4SMA24CAHE3/61 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AC, SMA
- Series:
- P4SMA, TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 20.5V
- Voltage - Breakdown (Min):
- 22.8V
- Voltage - Clamping (Max) @ Ipp:
- 33.2V
- Current - Peak Pulse (10/1000µs):
- 12A
- Power - Peak Pulse:
- 400W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
P4SMA24CAHE3/61 FAQ
1.How can I place an order for P4SMA24CAHE3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA24CAHE3/61 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 P4SMA24CAHE3/61 reliable?
The price and inventory of P4SMA24CAHE3/61 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA24CAHE3/61 is usually 5 days.
3.What payment methods are accepted for P4SMA24CAHE3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA24CAHE3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA24CAHE3/61?
P4SMA24CAHE3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA24CAHE3/61 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 P4SMA24CAHE3/61?
For technical support, including P4SMA24CAHE3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA24CAHE3/61 requirements.
6.How does Aetrix verify that P4SMA24CAHE3/61 is sourced from the original manufacturer or authorized distributors?
All P4SMA24CAHE3/61 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 P4SMA24CAHE3/61 meets industry standards.
7.What is the process for return or replacement of P4SMA24CAHE3/61?
All P4SMA24CAHE3/61 units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA24CAHE3/61, 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 P4SMA24CAHE3/61 part is unused and in its original packaging.
Return procedure for P4SMA24CAHE3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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