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Vishay General Semiconductor - Diodes Division P4SMA39AHE3_A/H
- Part No.:
- P4SMA39AHE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA39AHE3_A/H.pdf
- Description:
- TVS DIODE 33.3VWM 53.9VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:2,151
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Product details
Overview
P4SMA39AHE3_A/H from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMA (DO-214AC) package, rated for 39 V breakdown voltage (VBR = 37.1–41.0 V at 1 mA), 33.3 V standoff voltage (VWM), and 53.9 V clamping voltage (VC) at 7.4 A peak pulse current - designed to protect MOSFETs, ICs, and sensor signal lines in automotive and industrial power rails against inductive switching transients.
For engineers reviewing the P4SMA39AHE3_A/H datasheet, P4SMA39AHE3_A/H pinout, P4SMA39AHE3_A/H application, or P4SMA39AHE3_A/H equivalent, this AEC-Q101 qualified TVS offers verified 400 W peak pulse power (10/1000 µs), low incremental surge resistance, and MSL Level 1 reflow compatibility - critical for high-reliability automotive ECU and battery management system designs.
Technical Context
This unidirectional TVS operates with a cathode-band polarity marking and leverages glass-passivated junction technology for stable reverse leakage (<1 µA at VWM) and fast response time (<1 ns). Its thermal resistance (RθJA = 120 °C/W) and junction temperature range (–65 to +150 °C) support operation on standard 0.2" × 0.2" copper pads without forced cooling.
The device delivers precise clamping performance: at IPPM = 7.4 A (10/1000 µs), VC = 53.9 V, with a VBR/VWM ratio of ~1.17 and temperature coefficient of 0.100 %/°C - enabling predictable overvoltage protection in 24 V and 36 V automotive subsystems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 37.1 V / 41.0 V at 1 mA - defines reliable conduction onset under transient stress |
| VWM | 33.3 V - maximum continuous reverse operating voltage before leakage exceeds 1 µA |
| VC @ IPPM | 53.9 V at 7.4 A (10/1000 µs) - clamping voltage limiting downstream component stress |
| PPPM | 400 W peak pulse power - sustains 10/1000 µs surges without degradation |
| IFSM | 40 A (8.3 ms half-sine) - supports robust handling of repetitive load-dump events |
| TJ max | +150 °C - enables use in under-hood automotive environments with minimal derating |
| AEC-Q101 Qualified | Yes - validated for automotive electronics per stress test requirements |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, matte tin-plated leads, RoHS-compliant and halogen-free (HE3 suffix), MSL Level 1 (260 °C peak reflow).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / transient return path | Connected to ground or low-side reference in unidirectional clamp configuration |
| Cathode | Transient voltage sensing / clamping node | Connected to protected line (e.g., 24 V rail or sensor input); band-marked end |
Key Features
| Feature | Design Value |
|---|---|
| 400 W peak pulse power (10/1000 µs) | Enables single-device protection against ISO 7637-2 Pulse 1/2a/5a transients in 12/24 V systems |
| Glass passivated chip junction | Ensures stable VBR tolerance and low long-term parameter drift under thermal cycling |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients (e.g., <100 ns edges) |
| AEC-Q101 qualification (HE3 suffix) | Validates reliability for automotive control modules, ADAS sensors, and body electronics |
| MSL Level 1, 260 °C peak reflow | Supports standard lead-free SMT assembly without pre-baking or special handling |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 24 V supply inputs in engine control units (ECUs) against load dump and inductive kickback. IC Role / Device Role / Timing Role: Unidirectional TVS clamping transient energy to ground during voltage spikes up to 120 V. Use Value: Limits rail voltage to ≤53.9 V during 7.4 A surges, preventing damage to downstream DC/DC converters and microcontrollers. |
Use Scenario: Safeguarding analog outputs of pressure/temperature sensors in factory automation PLC I/O modules. IC Role / Device Role / Timing Role: Fast-response shunt protector on 0–10 V or 4–20 mA signal lines exposed to ESD and cable discharge. Use Value: Clamps transients within <1 ns while maintaining <1 µA leakage at 33.3 V, preserving signal integrity and ADC accuracy. |
| Telecom DC Power Feeds | Consumer Appliance Motor Drive Circuits |
Use Scenario: Overvoltage suppression on -48 V telecom rectifier outputs feeding base station RF modules. IC Role / Device Role / Timing Role: Standoff-rated TVS absorbing repetitive surges from relay switching and lightning-induced coupling. Use Value: Withstands 400 W pulses at 0.01% duty cycle and maintains VWM stability across –40 to +125 °C ambient. |
Use Scenario: Protecting gate drivers and logic ICs in washing machine motor inverters from back-EMF spikes. IC Role / Device Role / Timing Role: Cathode-to-rail placement clamps positive transients generated during MOSFET turn-off. Use Value: 40 A surge rating handles repeated 8.3 ms half-sine events from brushed motor commutation without degradation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ39A-E3/5A | Same VBR (37.1–41.0 V), identical SMA package, but rated for 400 W only up to 36 V; 39 V version has VC = 60.0 V at 6.7 A | Higher clamping voltage reduces protection margin for 24 V systems with tight VIN tolerances | Select P4SMA39AHE3_A/H when lower VC (53.9 V vs. 60.0 V) is required to meet downstream IC absolute maximum ratings. |
| 1.5SMC39A | Higher power rating (1500 W), DO-214AB package (larger footprint), VC = 60.0 V at 25 A | Requires PCB layout change; suited for higher-energy transients where space permits | Choose P4SMA39AHE3_A/H for space-constrained automotive modules where 400 W suffices and SMA footprint is mandated. |
Compared with SMAJ39A-E3/5A and 1.5SMC39A, P4SMA39AHE3_A/H delivers superior clamping performance in the same compact SMA footprint while meeting AEC-Q101 - making it optimal for cost- and size-sensitive automotive and industrial designs requiring certified reliability.
Availability
P4SMA39AHE3_A/H is available at Aetrix Electronics and suitable for automotive ECUs, industrial sensor interfaces, and telecom power feeds requiring stable component supply, AEC-Q101 compliance, and consistent 400 W transient suppression capability.
Supply support for P4SMA39AHE3_A/H 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 qualification.
The P4SMA Series targets high-volume, high-reliability transient suppression in automotive, industrial, and telecom applications - engineered for automated SMT assembly, low-profile mounting, and AEC-Q101 validation from wafer to final test.
FAQ
What is the clamping voltage of P4SMA39AHE3_A/H at its rated peak pulse current?
The P4SMA39AHE3_A/H has a maximum clamping voltage (VC) of 53.9 V at 7.4 A peak pulse current (IPPM) under the standard 10/1000 µs waveform. This value is measured per Figure 1 in the Vishay datasheet 88367 and ensures protected circuits remain below critical overvoltage thresholds during transient events. The P4SMA39AHE3_A/H achieves this with low incremental surge resistance and stable junction characteristics.
Is P4SMA39AHE3_A/H qualified for automotive applications?
Yes, P4SMA39AHE3_A/H is AEC-Q101 qualified, as confirmed by the "HE3" suffix and documentation in Vishay's P4SMA series datasheet (Rev. 09-Jan-2024). It undergoes stress testing for temperature cycling, humidity, and surge robustness required for automotive electronics. The P4SMA39AHE3_A/H is explicitly recommended for engine control units, body controllers, and ADAS sensor modules where certified reliability is mandatory.
What does the "_A/H" suffix in P4SMA39AHE3_A/H indicate?
The "_A/H" suffix in P4SMA39AHE3_A/H denotes the revision code ("A") and packaging format ("H" = 7-inch plastic tape and reel, 1800 units per reel). The "HE3" portion confirms RoHS-compliant, AEC-Q101 qualified construction. This full ordering code distinguishes it from commercial-grade variants (e.g., P4SMA39AE3) and ensures traceability to Vishay's qualified automotive production lot.
Can P4SMA39AHE3_A/H be used in bidirectional configurations?
No, P4SMA39AHE3_A/H is a unidirectional TVS diode, indicated by the "A" (not "CA") suffix and cathode band marking. Bidirectional versions use the "CA" suffix (e.g., P4SMA39CA). Using P4SMA39AHE3_A/H in bidirectional applications would result in forward conduction during negative transients, potentially damaging the device or failing to suppress. Always match polarity to circuit topology - the P4SMA39AHE3_A/H is designed exclusively for cathode-to-line, anode-to-ground placement.
What is the maximum operating junction temperature for P4SMA39AHE3_A/H?
The maximum operating junction temperature (TJ) for P4SMA39AHE3_A/H is +150 °C, as specified in the Absolute Maximum Ratings table of Vishay document 88367. This allows reliable operation in under-hood automotive environments and industrial enclosures without active cooling. Derating begins above 25 °C ambient per Figure 2, and the P4SMA39AHE3_A/H maintains full 400 W pulse capability up to TJ = 125 °C.
P4SMA39AHE3_A/H 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:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 33.3V
- Voltage - Breakdown (Min):
- 37.1V
- Voltage - Clamping (Max) @ Ipp:
- 53.9V
- Current - Peak Pulse (10/1000µs):
- 7.4A
- 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)
P4SMA39AHE3_A/H FAQ
1.How can I place an order for P4SMA39AHE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA39AHE3_A/H 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 P4SMA39AHE3_A/H reliable?
The price and inventory of P4SMA39AHE3_A/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA39AHE3_A/H is usually 5 days.
3.What payment methods are accepted for P4SMA39AHE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA39AHE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA39AHE3_A/H?
P4SMA39AHE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA39AHE3_A/H 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 P4SMA39AHE3_A/H?
For technical support, including P4SMA39AHE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA39AHE3_A/H requirements.
6.How does Aetrix verify that P4SMA39AHE3_A/H is sourced from the original manufacturer or authorized distributors?
All P4SMA39AHE3_A/H 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 P4SMA39AHE3_A/H meets industry standards.
7.What is the process for return or replacement of P4SMA39AHE3_A/H?
All P4SMA39AHE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA39AHE3_A/H, 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 P4SMA39AHE3_A/H part is unused and in its original packaging.
Return procedure for P4SMA39AHE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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