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Vishay General Semiconductor - Diodes Division P4SMA24AHE3/61
- Part No.:
- P4SMA24AHE3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA24AHE3/61.pdf
- Description:
- TVS DIODE 20.5VWM 33.2VC DO214AC
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
P4SMA24AHE3/61 from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMA (DO-214AC) package, designed for clamping voltage transients on power and signal lines. It features a 24 V standoff voltage (VWM), 25.2 V maximum breakdown voltage (VBR), 33.2 V clamping voltage at 12 A peak pulse current, and 400 W peak pulse power capability with 10/1000 µs waveform - suitable for protecting MOSFETs and sensor signal lines in automotive ECUs.
For engineers reviewing the P4SMA24AHE3/61 datasheet, P4SMA24AHE3/61 pinout, P4SMA24AHE3/61 application, or P4SMA24AHE3/61 equivalent, key selection criteria include clamping voltage margin vs. protected IC's absolute maximum rating, thermal derating above 25 °C, AEC-Q101 qualification status, and compatibility with automated SMT placement on 0.2" × 0.2" copper pads.
Technical Context
This TVS operates as a unidirectional avalanche clamp: reverse-biased during normal operation, it remains high-impedance until transient voltage exceeds VBR (22.8–25.2 V), then rapidly transitions to low-impedance conduction to divert surge current. Its glass-passivated junction ensures stable breakdown and low leakage (<1 µA at 20.5 V).
Designed for automotive-grade reliability, P4SMA24AHE3/61 meets AEC-Q101 stress testing requirements and is rated for TJ = –65 °C to +150 °C operation. Thermal resistance is 120 °C/W junction-to-ambient (on recommended pad layout), limiting continuous power dissipation to 3.3 W at TA = 50 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 20.5 V - Maximum continuous reverse voltage before significant leakage; sets upper limit for protected circuit's operating voltage. |
| VBR (Breakdown Voltage) | 22.8–25.2 V at 1 mA - Confirmed avalanche onset range; defines minimum overvoltage threshold for clamping activation. |
| VC (Clamping Voltage) | 33.2 V at IPPM = 12 A - Peak voltage seen by protected device during 10/1000 µs surge; must stay below downstream IC's absolute max rating. |
| PPPM (Peak Pulse Power) | 400 W - Surge energy handling capacity per single 10/1000 µs event; derates to 300 W above 91 V, but not applicable here. |
| ID (Reverse Leakage) | <1 µA at VWM - Ensures minimal standby power loss and signal integrity on high-impedance lines like sensor inputs. |
| TJ max | +150 °C - Enables use in under-hood automotive environments without thermal shutdown. |
| AEC-Q101 Qualified | Yes - Validated for automotive electronics per stress test requirements including temperature cycling, HTRB, and ESD. |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, low-profile plastic case with matte tin-plated leads solderable per J-STD-002. Cathode indicated by band; anode is unmarked end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink | Connected to protected line; conducts surge current to ground when voltage exceeds VBR. |
| Anode (unbanded end) | Reference node | Typically tied to system ground or low-impedance return path; completes clamping loop during overvoltage events. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive applications including engine control, body electronics, and ADAS sensors. |
| Glass-passivated junction | Ensures stable VBR over lifetime and immunity to humidity-induced parameter drift. |
| MSL Level 1 (260 °C peak) | Compatible with standard lead-free reflow profiles without moisture sensitivity concerns. |
| 400 W peak pulse power (10/1000 µs) | Handles ISO 7637-2 Pulse 1 (inductive load dump) and IEC 61000-4-5 surges in 12 V systems. |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (e.g., ESD > 30 kV/ns). |
Applications
| Automotive Engine Control Unit (ECU) | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Protecting 12 V supply rail and CAN transceiver I/O pins from load-dump transients (ISO 7637-2 Pulse 5a) and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS clamping device placed between power input and local regulator, or across CAN_H/CAN_L differential pair. Use Value: Limits transient voltage to ≤33.2 V, preventing latch-up or gate oxide damage in MCU and transceiver ICs rated for 36 V absolute max. |
Use Scenario: Shielding analog output lines (e.g., 4–20 mA current loop, 0–10 V voltage output) of pressure/temperature sensors from ESD and field wiring surges. IC Role / Device Role / Timing Role: Low-leakage (≤1 µA) clamping element mounted directly at connector interface, upstream of op-amp buffer or ADC driver. Use Value: Maintains signal fidelity during normal operation while suppressing ±8 kV contact ESD (IEC 61000-4-2) without loading the sensor output. |
| Telecom Power Supply Input | Consumer Appliance Motor Drive Board |
Use Scenario: Safeguarding AC-DC adapter secondary-side DC bus against lightning-induced surges (IEC 61000-4-5, 2 kV line-earth) and back-EMF from relay coils. IC Role / Device Role / Timing Role: Primary overvoltage protection on 24 V or 48 V DC distribution rail feeding PoE controllers or DC-DC converters. Use Value: Clamps 400 W surges within 1 ns response time, preserving downstream FETs and controller ICs without requiring series impedance. |
Use Scenario: Suppressing commutation spikes from brushed DC motors in washing machines or HVAC blowers connected to microcontroller GPIOs and motor drivers. IC Role / Device Role / Timing Role: Localized TVS on motor H-bridge supply rails and feedback signal paths (e.g., hall-effect sensor outputs). Use Value: Withstands repetitive 40 A IFSM surges (8.3 ms half-sine) and maintains <1 µA leakage at 20.5 V, avoiding false triggering of logic-level inputs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ24A-E3/61 | Same SMA package, identical VWM/VBR/VC specs, but not AEC-Q101 qualified; lower MSL rating (Level 2 vs. Level 1). | Approved for commercial/industrial use only; unsuitable for automotive production without additional qualification. | Select when cost sensitivity outweighs automotive compliance and thermal robustness is less critical. |
| 1.5SMC24A | Larger SMC (DO-214AB) package; same electrical specs but higher RθJA (100 °C/W vs. 120 °C/W); 1500 pcs/reel vs. 1800 pcs/reel. | Better thermal performance on large copper areas; requires larger PCB footprint and different pick-and-place nozzle. | Choose when board space allows and higher surge repetition rate demands improved thermal dissipation. |
Compared with SMAJ24A-E3/61, P4SMA24AHE3/61 provides guaranteed automotive qualification and superior reflow compatibility; versus 1.5SMC24A, it trades thermal margin for compact size and higher reel quantity - ideal for space-constrained automotive modules.
Availability
P4SMA24AHE3/61 is available at Aetrix Electronics and suitable for automotive ECU design, industrial sensor interface protection, and telecom power rail safeguarding requiring stable component supply across long production lifecycles.
Supply support for P4SMA24AHE3/61 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 reliability, efficiency, and automotive-grade validation.
The P4SMA Series targets high-reliability transient suppression in harsh environments; its AEC-Q101 variants like P4SMA24AHE3/61 were engineered specifically for under-hood and chassis-mounted automotive electronics requiring zero-failure tolerance.
FAQ
What is the clamping voltage of P4SMA24AHE3/61 at its rated peak pulse current?
The P4SMA24AHE3/61 has a maximum clamping voltage (VC) of 33.2 V at 12 A peak pulse current (IPPM), measured using the standard 10/1000 µs waveform. This value is critical for ensuring the protected circuit's voltage tolerance is not exceeded during surge events. The P4SMA24AHE3/61 achieves this clamping performance while maintaining low leakage and fast response, making it suitable for sensitive automotive and industrial interfaces.
Is P4SMA24AHE3/61 qualified for automotive applications?
Yes, P4SMA24AHE3/61 is explicitly AEC-Q101 qualified, as confirmed by Vishay's ordering code suffix "HE3" and documentation revision 09-Jan-2024. This qualification covers temperature cycling, high-temperature reverse bias, and ESD testing required for automotive electronics. The P4SMA24AHE3/61 is therefore approved for use in engine control units, body control modules, and ADAS sensor subsystems where reliability under thermal and mechanical stress is mandatory.
What is the standoff voltage (VWM) and why does it matter for P4SMA24AHE3/61?
The standoff voltage (VWM) of P4SMA24AHE3/61 is 20.5 V - the maximum continuous reverse voltage it can block without exceeding 1 µA leakage. This parameter ensures the P4SMA24AHE3/61 remains inactive during normal 12 V or 24 V system operation while providing headroom before clamping begins. Selecting a VWM ≥110 % of nominal supply voltage prevents false triggering and preserves signal integrity on protected lines.
How does the SMA (DO-214AC) package of P4SMA24AHE3/61 impact PCB layout?
The SMA package of P4SMA24AHE3/61 measures 4.93 mm × 3.99 mm with 2.54 mm lead pitch, requiring 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal for optimal thermal performance and 400 W surge handling. Its low profile (1.98 mm height) supports dense layouts in automotive modules. The P4SMA24AHE3/61's matte tin plating ensures compatibility with lead-free reflow and eliminates whisker risk per JESD 201 Class 2.
Can P4SMA24AHE3/61 be used in bidirectional configurations?
No, P4SMA24AHE3/61 is a unidirectional TVS diode, indicated by the "A" suffix and cathode band marking. Bidirectional variants use the "CA" suffix (e.g., P4SMA24CA). Using P4SMA24AHE3/61 in bidirectional applications would result in forward conduction during negative transients, potentially damaging the device or failing to protect. For AC-coupled or differential lines, select the appropriate CA-series part instead of P4SMA24AHE3/61.
P4SMA24AHE3/61 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:
- 1
- Bidirectional Channels:
- -
- 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)
P4SMA24AHE3/61 FAQ
1.How can I place an order for P4SMA24AHE3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA24AHE3/61 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 P4SMA24AHE3/61 reliable?
The price and inventory of P4SMA24AHE3/61 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA24AHE3/61 is usually 5 days.
3.What payment methods are accepted for P4SMA24AHE3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA24AHE3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA24AHE3/61?
P4SMA24AHE3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA24AHE3/61 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 P4SMA24AHE3/61?
For technical support, including P4SMA24AHE3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA24AHE3/61 requirements.
6.How does Aetrix verify that P4SMA24AHE3/61 is sourced from the original manufacturer or authorized distributors?
All P4SMA24AHE3/61 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 P4SMA24AHE3/61 meets industry standards.
7.What is the process for return or replacement of P4SMA24AHE3/61?
All P4SMA24AHE3/61 units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA24AHE3/61, 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 P4SMA24AHE3/61 part is unused and in its original packaging.
Return procedure for P4SMA24AHE3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4SMA24AHE3/61 Tags
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