My Inquiry
My Account
Vishay General Semiconductor - Diodes Division P4KE36HE3/73
- Part No.:
- P4KE36HE3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
P4KE36HE3/73.pdf
- Description:
- TVS DIODE 29.1VWM 52VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:3,866
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
P4KE36HE3/73 from Vishay General Semiconductor is a unidirectional Transient Voltage Suppressor (TVS) diode in DO-41 package, designed for robust overvoltage protection of DC power rails and signal lines. It features a 34.2 V minimum breakdown voltage (VBR), 30.8 V maximum stand-off voltage (VWM), 49.9 V clamping voltage (VC) at 8.0 A peak pulse current, and 400 W peak pulse power rating with 10/1000 μs waveform - deployed in automotive sensor interfaces and industrial control I/O protection.
For engineers reviewing the P4KE36HE3/73 datasheet, P4KE36HE3/73 pinout, P4KE36HE3/73 application, or P4KE36HE3/73 equivalent, this device serves as an AEC-Q101 qualified, RoHS-compliant transient suppressor where precise clamping performance, low leakage (<1.0 μA at VWM), and thermal stability up to +175 °C are critical selection criteria.
Technical Context
This TVS diode operates as a unidirectional avalanche clamp, triggered when reverse voltage exceeds its specified VBR range (34.2–37.8 V). Its glass-passivated junction ensures stable breakdown characteristics and fast response time (<1 ns), enabling effective suppression of ESD, lightning-induced surges, and inductive switching transients.
Thermal design is supported by RθJL = 66 °C/W (junction-to-lead) and RθJA = 100 °C/W (junction-to-ambient, LLead = 10 mm), with derating applied above TA = 25 °C per Fig. 2. The device sustains 40 A non-repetitive forward surge (8.3 ms half-sine) and maintains VF ≤ 3.5 V at 25 A.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 34.2 V / 37.8 V - defines reliable avalanche initiation threshold under 1.0 mA test current |
| VWM | 30.8 V - maximum continuous reverse operating voltage before leakage rises significantly |
| VC @ IPPM | 49.9 V at 8.0 A - clamped voltage during 10/1000 μs surge, limiting stress on downstream ICs |
| IPPM | 8.0 A - peak pulse current capability sustaining 400 W surge power without failure |
| ID @ VWM | <1.0 μA - ultra-low reverse leakage preserves power rail efficiency and signal integrity |
| TJ max. | +175 °C - enables operation in under-hood automotive and high-temperature industrial environments |
| Package | DO-41 (DO-204AL) - industry-standard axial leaded package with UL 94 V-0 molded epoxy body |
Pinout & Package
DO-41 (DO-204AL) package: axial-leaded, glass-passivated silicon junction in molded epoxy case. Cathode indicated by color band on one end; leads are matte tin-plated, solderable per J-STD-002 and JESD 22-B102. Meets JESD 201 Class 2 whisker resistance (HE3 suffix).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side (e.g., ground or return path) in unidirectional protection configuration |
| Cathode | Avalanche clamping terminal | Connected to protected line (e.g., 24 V rail or sensor output); color-banded end carries reverse surge current to ground |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and surge endurance per stress test plan |
| Glass passivated junction | Ensures stable VBR tolerance and long-term parameter consistency across thermal and life cycles |
| 400 W peak pulse power (10/1000 μs) | Withstands repetitive transient energy events typical in 12/24 V vehicle subsystems and factory automation I/O |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients, improving protection margin for sensitive MOSFET gates |
| RoHS-compliant HE3 suffix | Meets JESD 201 Class 2 whisker resistance and UL 94 V-0 flammability for safety-critical deployments |
Applications
| Automotive Sensor Protection | Industrial PLC Digital Input |
|---|---|
Use Scenario: Protecting analog/digital outputs of engine coolant temperature (ECT) and manifold absolute pressure (MAP) sensors from load dump and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS placed between sensor signal line and chassis ground to clamp transients before they reach MCU ADC input or signal conditioner. Use Value: Clamps 49.9 V at 8.0 A while maintaining <1.0 μA leakage at 30.8 V, preserving sensor accuracy and preventing false fault codes in ASAM-compliant ECUs. |
Use Scenario: Safeguarding 24 V DC digital input channels on programmable logic controller (PLC) modules exposed to relay coil flyback and field wiring surges. IC Role / Device Role / Timing Role: Standoff-rated TVS connected across input optocoupler terminals to absorb inductive kickback without triggering false logic transitions. Use Value: Withstands 400 W pulses and operates up to +175 °C ambient, ensuring uptime in cabinet-mounted control systems near motors and contactors. |
| DC Power Rail Protection | Telecom Line Interface |
Use Scenario: Secondary overvoltage protection on 36 V nominal industrial power supplies feeding motor drivers and encoder interfaces. IC Role / Device Role / Timing Role: Parallel-connected TVS shunting transient energy to ground when input voltage exceeds 30.8 V, complementing upstream fusing and filtering. Use Value: Fast <1 ns response and low VC/VBR ratio (1.46) limit voltage excursion to safe levels for 40 V-rated MOSFETs and gate drivers. |
Use Scenario: Surge protection on RS-485/RS-422 data lines in outdoor telecom cabinets subject to induced lightning surges. IC Role / Device Role / Timing Role: Unidirectional TVS placed between differential pair and local ground plane to suppress common-mode transients without distorting signal integrity. Use Value: Low capacitance (typ. <100 pF at zero bias) and tight VBR tolerance (±5 %) preserve signal edge rate and timing margins in 10 Mbps+ serial links. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ36A-E3/52 | Surface-mount SMB package (vs. axial DO-41); same VWM/VBR/VC specs; 600 W PPPM rating | Designed for automated SMT assembly; higher power handling but larger footprint than P4KE36HE3/73 | Select when board space allows SMT placement and higher surge margin is required beyond 400 W |
| 1.5KE36A | Same DO-41 package but 1500 W PPPM rating; higher VC (58.1 V) and wider VBR tolerance (±10 %) | Used where higher-energy transients dominate (e.g., AC mains coupling), not optimized for precision clamping | Choose only if system-level testing confirms 58.1 V clamping is acceptable for protected ICs |
Compared with SMBJ36A-E3/52 and 1.5KE36A, the P4KE36HE3/73 offers AEC-Q101 qualification, tighter VBR tolerance (±5 %), and lower VC, making it optimal for automotive and high-reliability industrial applications requiring predictable clamping behavior at moderate surge levels.
Availability
P4KE36HE3/73 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC digital inputs, and DC power rail protection requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for P4KE36HE3/73 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, TVS devices, and power MOSFETs with emphasis on reliability and application-specific performance.
The P4KE36HE3/73 belongs to Vishay's TRANSZORB® family of transient voltage suppressors, engineered for robust, standardized overvoltage protection in automotive, industrial, and telecom infrastructure where AEC-Q101 compliance and repeatable clamping are mandatory.
FAQ
What is the key difference between P4KE36HE3/73 and P4KE36A-E3/73?
The P4KE36HE3/73 is AEC-Q101 qualified and meets JESD 201 Class 2 whisker resistance, whereas P4KE36A-E3/73 is commercial-grade (Class 1A). Both share identical electrical specs (VBR, VC, PPPM), but P4KE36HE3/73 is validated for automotive under-hood use with extended temperature cycling and humidity testing per AEC-Q101 requirements.
Does P4KE36HE3/73 support bidirectional transient suppression?
No - P4KE36HE3/73 is a unidirectional TVS diode. Its cathode band indicates polarity, and it conducts only in reverse breakdown. For bidirectional protection, Vishay specifies CA-suffix variants (e.g., P4KE36CA); using P4KE36HE3/73 in AC or bipolar signal paths would result in forward conduction and potential failure.
What is the maximum clamping voltage of P4KE36HE3/73 under standard test conditions?
The maximum clamping voltage (VC) of P4KE36HE3/73 is 49.9 V, measured at 8.0 A peak pulse current with a 10/1000 μs waveform per Fig. 1 and Table on page 2 of Vishay document 88365. This value defines the upper voltage limit imposed on protected circuitry during surge events.
Can P4KE36HE3/73 be used in parallel for higher surge current handling?
No - P4KE36HE3/73 should not be paralleled without external balancing resistors. Manufacturing tolerances in VBR (±5 %) cause uneven current sharing during transients, risking thermal runaway in the unit with lowest breakdown voltage. For higher IPPM, select a single higher-rated device like 1.5KE36A instead.
Is P4KE36HE3/73 compatible with lead-free reflow soldering processes?
Yes - P4KE36HE3/73 uses matte tin-plated leads compliant with J-STD-002 and JESD 22-B102, and supports solder dip at 275 °C for 10 s per JESD 22-B106. While rated for wave soldering, it is not intended for full lead-free reflow profiles exceeding 260 °C peak; hand-soldering or selective wave is recommended.
P4KE36HE3/73 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-204AL, DO-41, Axial
- Series:
- TransZorb®
- Packaging:
- Tape & Box (TB)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 29.1V
- Voltage - Breakdown (Min):
- 32.4V
- Voltage - Clamping (Max) @ Ipp:
- 52V
- Current - Peak Pulse (10/1000µs):
- 7.7A
- Power - Peak Pulse:
- 400W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AL (DO-41)
P4KE36HE3/73 FAQ
1.How can I place an order for P4KE36HE3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for P4KE36HE3/73 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 P4KE36HE3/73 reliable?
The price and inventory of P4KE36HE3/73 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4KE36HE3/73 is usually 5 days.
3.What payment methods are accepted for P4KE36HE3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4KE36HE3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4KE36HE3/73?
P4KE36HE3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4KE36HE3/73 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 P4KE36HE3/73?
For technical support, including P4KE36HE3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4KE36HE3/73 requirements.
6.How does Aetrix verify that P4KE36HE3/73 is sourced from the original manufacturer or authorized distributors?
All P4KE36HE3/73 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 P4KE36HE3/73 meets industry standards.
7.What is the process for return or replacement of P4KE36HE3/73?
All P4KE36HE3/73 units undergo pre-shipment inspection (PSI). If there is an issue with P4KE36HE3/73, 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 P4KE36HE3/73 part is unused and in its original packaging.
Return procedure for P4KE36HE3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4KE36HE3/73 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 …
