My Inquiry
My Account
Vishay General Semiconductor - Diodes Division P4SMA36AHE3_A/H
- Part No.:
- P4SMA36AHE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA36AHE3_A/H.pdf
- Description:
- TVS DIODE 30.8VWM 49.9VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:7,575
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
P4SMA36AHE3_A/H from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMA (DO-214AC) package, rated for 36 V standoff voltage (VWM), 49.9 V clamping voltage (VC) at 8.0 A peak pulse current (IPPM), and 400 W peak pulse power (PPPM) with 10/1000 µs waveform - designed to protect MOSFETs, ICs, and sensor signal lines against inductive switching transients and ESD in automotive and industrial power electronics.
For engineers reviewing the P4SMA36AHE3_A/H datasheet, P4SMA36AHE3_A/H pinout, P4SMA36AHE3_A/H application, or P4SMA36AHE3_A/H equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, thermal resistance (RθJA = 120 °C/W), junction temperature limit (TJ max = 150 °C), and RoHS-compliant packaging details required for automotive-grade circuit protection design-in.
Technical Context
The P4SMA36AHE3_A/H operates as a unidirectional clamping device with a glass-passivated silicon junction, enabling fast response to transient overvoltages while maintaining low incremental surge resistance. Its breakdown voltage (VBR) is specified at 34.2–37.8 V (min/max) under 1 mA test current, ensuring precise threshold control for sensitive 3.3 V and 5 V rail protection.
Designed for surface-mount assembly on 0.2" × 0.2" copper pads per terminal, it delivers 400 W peak pulse power at TA = 25 °C (derated above 25 °C per Fig. 2), with 3.3 W steady-state power dissipation and 40 A non-repetitive forward surge capability - meeting MSL Level 1 and AEC-Q101 stress requirements for automotive under-hood applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 30.8 V - maximum continuous reverse working voltage before clamping begins; defines safe operating margin below system rail voltage. |
| VBR (Breakdown Voltage) | 34.2–37.8 V at IT = 1 mA - precise voltage threshold where avalanche conduction initiates; ensures reliable triggering without premature leakage. |
| VC (Clamping Voltage) | 49.9 V at IPPM = 8.0 A - maximum voltage seen by protected circuit during 10/1000 µs transient; critical for IC-level overvoltage immunity. |
| PPPM (Peak Pulse Power) | 400 W - transient energy absorption capacity under standardized 10/1000 µs waveform; supports robust protection against load dump and inductive kick. |
| ID (Reverse Leakage) | 1.0 µA at VWM - ultra-low leakage preserves signal integrity and battery life in always-on circuits. |
| TJ max | 150 °C - maximum junction temperature rating enables operation in high-ambient environments such as engine control units. |
| RθJA | 120 °C/W - thermal resistance from junction to ambient air; informs PCB copper pad sizing and layout for thermal management. |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102; cathode indicated by band marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point in forward bias | Connected to ground or lower-potential node in unidirectional TVS configuration; enables clamping of positive transients on the cathode side. |
| Cathode | Current exit point in forward bias; marked with band | Connected to protected line (e.g., 36 V supply rail or signal trace); conducts avalanche current during overvoltage events to shunt energy to ground. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control, body electronics, and ADAS sensors - meets stress test requirements for temperature cycling, HTRB, and ESD. |
| Glass passivated junction | Enhances long-term reliability and stability of breakdown voltage under thermal and humidity stress, reducing parameter drift over lifetime. |
| MSL Level 1 (260 °C peak) | Enables standard reflow soldering without moisture sensitivity concerns - no baking required prior to assembly. |
| 400 W peak pulse power | Supports protection against ISO 7637-2 Pulse 1/2a/5a transients and IEC 61000-4-5 surge events up to 4 kV in industrial systems. |
| Low clamping ratio (VC/VBR ≈ 1.37) | Minimizes overvoltage overshoot during clamping - critical for safeguarding 36 V-rated components like gate drivers and CAN transceivers. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Protection |
|---|---|
|
Use Scenario: Protecting 36 V battery-fed ECUs from load dump transients (ISO 16750-2) and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS placed between 36 V rail and chassis ground to clamp surges above 49.9 V. Use Value: Prevents latch-up or permanent damage to microcontrollers and power management ICs during vehicle ignition and alternator regulation faults. |
Use Scenario: Shielding analog output lines of pressure/temperature sensors in factory automation PLCs from EFT and surge coupling. IC Role / Device Role / Timing Role: TVS mounted at connector interface to absorb sub-microsecond transients before reaching ADC front-end. Use Value: Maintains measurement accuracy and prevents false triggers by limiting induced voltage spikes to ≤49.9 V during 4 kV contact discharge events. |
| Telecom DC Power Input Protection | Consumer Device USB/DC Jack Protection |
|
Use Scenario: Safeguarding 36 V PoE++ midspan injectors and remote powering equipment from lightning-induced surges on DC distribution lines. IC Role / Device Role / Timing Role: Primary clamping device on input bus, coordinated with upstream fuses and downstream filtering. Use Value: Enables compliance with IEC 61000-4-5 Level 4 (4 kV line-to-ground) without derating or parallel devices. |
Use Scenario: Protecting 36 V DC input jacks in portable medical monitors and smart home hubs from user-handling ESD and accidental AC mains misconnection. IC Role / Device Role / Timing Role: First-line defense at board edge, absorbing ±8 kV contact ESD per IEC 61000-4-2 before internal LDOs or battery chargers. Use Value: Eliminates need for secondary protection stages due to low leakage (1.0 µA) and fast response (<1 ns), preserving standby current budget. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ36A-E3/52 (Vishay) | Higher package thermal mass (SMB/DO-214AA), RθJA = 85 °C/W, same VWM/VC but 600 W PPPM rating. | Better suited for higher-power or thermally constrained layouts; larger footprint than SMA. | Select when board space allows and peak transient energy exceeds 400 W. |
| 1.5SMC36A (ON Semiconductor) | Same SMA package, identical VWM (30.8 V) and VC (49.9 V), but rated for 1500 W PPPM and 30 A IPPM; not AEC-Q101 qualified. | Applicable in commercial/industrial settings requiring higher surge margin but lacking automotive qualification requirements. | Choose for cost-sensitive non-automotive designs needing extended surge headroom without AEC-Q101 validation. |
Compared with P4SMA36AHE3_A/H, SMBJ36A-E3/52 offers superior thermal performance and higher pulse power in a larger package, while 1.5SMC36A provides greater surge capacity without automotive qualification - making P4SMA36AHE3_A/H the optimal choice where AEC-Q101 compliance, compact SMA footprint, and precise 400 W clamping are jointly required.
Availability
P4SMA36AHE3_A/H is available at Aetrix Electronics and suitable for automotive ECU protection, industrial sensor interface hardening, and telecom DC input surge suppression requiring stable component supply, AEC-Q101 traceability, and RoHS-compliant manufacturing.
Supply support for P4SMA36AHE3_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, precision, and automotive-grade qualification.
The P4SMA Series is engineered for high-reliability transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where consistent clamping behavior, low leakage, and AEC-Q101 validation are mandatory.
FAQ
What is the clamping voltage of P4SMA36AHE3_A/H at its rated peak pulse current?
The P4SMA36AHE3_A/H has a maximum clamping voltage (VC) of 49.9 V at 8.0 A peak pulse current (IPPM) under the 10/1000 µs waveform condition. This value is measured per JEDEC standards and defines the upper voltage limit imposed on protected circuits during transient events - a key parameter for ensuring downstream ICs remain within their absolute maximum ratings. The P4SMA36AHE3_A/H maintains this clamping performance across its full operating temperature range.
Is P4SMA36AHE3_A/H qualified for automotive applications?
Yes, P4SMA36AHE3_A/H is AEC-Q101 qualified, as confirmed by Vishay's documentation and ordering code suffix "HE3" (RoHS-compliant + AEC-Q101). It undergoes rigorous stress testing including temperature cycling, highly accelerated life testing (HALT), and ESD verification - making it suitable for use in engine control modules, body control units, and ADAS sensor interfaces where reliability under thermal and mechanical stress is critical. The P4SMA36AHE3_A/H meets all applicable AEC-Q101 failure criteria.
What is the standoff voltage (VWM) rating of P4SMA36AHE3_A/H, and how does it relate to system voltage?
The P4SMA36AHE3_A/H has a maximum standoff voltage (VWM) of 30.8 V, meaning it remains in high-impedance state up to this reverse voltage level. This rating is selected to provide ≥15 % margin below a nominal 36 V system rail, preventing leakage or premature conduction during normal operation while allowing sufficient headroom for ripple and tolerance. The P4SMA36AHE3_A/H ensures stable protection without interfering with steady-state functionality in 36 V automotive and industrial power systems.
Does P4SMA36AHE3_A/H have a bidirectional variant, and what is the difference?
No, P4SMA36AHE3_A/H is strictly unidirectional, indicated by the "A" suffix and cathode band marking. Bidirectional variants use the "CA" suffix (e.g., P4SMA36CA), which suppress transients of either polarity and lack polarity marking. The P4SMA36AHE3_A/H is optimized for single-rail protection where only positive-going transients require suppression - offering tighter parameter control and lower capacitance than bidirectional equivalents, which is advantageous for high-speed signal lines.
What is the thermal resistance and maximum junction temperature of P4SMA36AHE3_A/H?
The P4SMA36AHE3_A/H has a typical junction-to-ambient thermal resistance (RθJA) of 120 °C/W when mounted on minimum recommended 0.2" × 0.2" copper pads, and a maximum junction temperature (TJ max) of +150 °C. These values define its thermal envelope: at 3.3 W steady-state dissipation, junction temperature rise is ~396 °C above ambient - confirming that the device is intended for transient-only duty, not continuous power handling. The P4SMA36AHE3_A/H must be applied within its pulsed power derating curve (Fig. 2) to avoid thermal runaway.
P4SMA36AHE3_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):
- 30.8V
- Voltage - Breakdown (Min):
- 34.2V
- Voltage - Clamping (Max) @ Ipp:
- 49.9V
- Current - Peak Pulse (10/1000µs):
- 8A
- 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)
P4SMA36AHE3_A/H FAQ
1.How can I place an order for P4SMA36AHE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA36AHE3_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 P4SMA36AHE3_A/H reliable?
The price and inventory of P4SMA36AHE3_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 P4SMA36AHE3_A/H is usually 5 days.
3.What payment methods are accepted for P4SMA36AHE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA36AHE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA36AHE3_A/H?
P4SMA36AHE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA36AHE3_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 P4SMA36AHE3_A/H?
For technical support, including P4SMA36AHE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA36AHE3_A/H requirements.
6.How does Aetrix verify that P4SMA36AHE3_A/H is sourced from the original manufacturer or authorized distributors?
All P4SMA36AHE3_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 P4SMA36AHE3_A/H meets industry standards.
7.What is the process for return or replacement of P4SMA36AHE3_A/H?
All P4SMA36AHE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA36AHE3_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 P4SMA36AHE3_A/H part is unused and in its original packaging.
Return procedure for P4SMA36AHE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4SMA36AHE3_A/H 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
Comparator circuit design covering voltage thresholds, input limits, open-collector outputs, LM393 wiring, op-amp differences, hysteresis, timing, window detection and practical fault diagnosis.
Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…
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 …
