My Inquiry
My Account
Vishay General Semiconductor - Diodes Division P6KE91HE3/54
- Part No.:
- P6KE91HE3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
P6KE91HE3/54.pdf
- Description:
- TVS DIODE 73.7VWM 131VC DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:4,561
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
P6KE91HE3/54 from Vishay General Semiconductor is a uni-directional Transient Voltage Suppressor (TVS) diode in DO-204AC (DO-15) package, designed for primary overvoltage protection of DC power rails and signal lines. It features a 91 V breakdown voltage (VBR min/max = 86.5–95.5 V at 1.0 mA), 77.8 V stand-off voltage (VWM), 125 V maximum clamping voltage (VC) at 4.8 A peak pulse current, and 600 W peak pulse power rating with 10/1000 µs waveform.
For engineers reviewing the P6KE91HE3/54 datasheet, P6KE91HE3/54 pinout, P6KE91HE3/54 application, or P6KE91HE3/54 equivalent, key selection considerations include its AEC-Q101 qualification, 175 °C max junction temperature, low 0.106 %/°C VBR temperature coefficient, and suitability for automotive ECU power rail protection where robust surge immunity and RoHS-compliant, whisker-tested leads are required.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: under normal conditions it presents high impedance (>1 MΩ leakage at 77.8 V), but triggers into low-impedance conduction when transient voltage exceeds VBR, clamping the line to ≤125 V at 4.8 A. Its glass-passivated junction ensures stable breakdown characteristics and fast response time (<1 ns).
The device is rated for 100 A non-repetitive forward surge current (IFSM) and dissipates up to 5.0 W continuously on an infinite heatsink at TL = 75 °C. Thermal resistance is 20 °C/W junction-to-lead and 75 °C/W junction-to-ambient, supporting reliable operation in compact PCB layouts with minimal thermal derating above 25 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 86.5 V / 95.5 V at 1.0 mA - defines precise triggering threshold for overvoltage events |
| VWM | 77.8 V - maximum continuous working voltage before leakage exceeds 1.0 µA |
| VC @ IPPM | 125 V at 4.8 A (10/1000 µs) - clamping voltage limiting downstream component stress |
| PPPM | 600 W - peak transient energy absorption capability without failure |
| TJ max | +175 °C - enables use in under-hood automotive environments and high-temperature industrial enclosures |
| RθJL | 20 °C/W - supports direct lead-sinking for thermal management without external heatsinks |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD |
Pinout & Package
Package: DO-204AC (DO-15), axial-leaded, molded epoxy case with matte tin-plated leads compliant to J-STD-002 and JESD 22-B102. Cathode indicated by color band on body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side connection point | Connected to ground or low-potential reference; completes shunt path during clamping |
| Cathode | High-side connection point | Connected to protected line (e.g., 48 V rail); polarity-sensitive for uni-directional operation |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated chip junction | Ensures stable VBR over lifetime and immunity to humidity-induced parameter drift |
| AEC-Q101 qualification | Validated for automotive powertrain and body electronics per stress test requirements |
| HE3 suffix whisker testing | Meets JESD 201 Class 2 for tin whisker resistance-critical for long-life sealed modules |
| 600 W peak pulse power (10/1000 µs) | Withstands ISO 7637-2 Pulse 1/2a/5a transients in 12 V/24 V/48 V vehicle systems |
| Low clamping ratio (VC/VBR ≈ 1.31) | Minimizes overvoltage margin needed for protected ICs like CAN transceivers or MCU I/O |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: Protecting 48 V battery management system (BMS) input against load dump and alternator switching transients. IC Role / Device Role / Timing Role: Shunt-type transient suppressor placed between BMS input and chassis ground. Use Value: Clamps transients to ≤125 V, preventing damage to upstream DC-DC converters rated for 100 V absolute max. |
Use Scenario: Safeguarding analog output lines of pressure sensors in factory automation PLC modules. IC Role / Device Role / Timing Role: Low-capacitance (≈50 pF) uni-directional clamp on 0–10 V output channel. Use Value: Limits induced surges from nearby motor contactors to <125 V while preserving signal integrity below 77.8 V. |
| Telecom DC Power Input | OBD-II Diagnostic Port Protection |
|
Use Scenario: Front-end protection of PoE-powered network switches operating from -48 V DC supply. IC Role / Device Role / Timing Role: Uni-directional TVS referenced to negative rail to suppress positive-going transients. Use Value: Withstands 600 W pulses without degradation, maintaining >1 MΩ isolation at nominal -48 V operation. |
Use Scenario: Overvoltage safeguard on vehicle OBD-II connector pin 16 (battery +12 V) against jump-start spikes. IC Role / Device Role / Timing Role: Primary clamping device mounted directly at connector entry point. Use Value: Triggers within nanoseconds to limit 100 V+ jump-start transients to safe levels for diagnostic tool circuitry. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ90A | Lower PPPM (400 W), same VWM (77 V), SMC package (larger footprint) | Less suitable for high-energy automotive load dump; better for space-constrained consumer designs | Select SMAJ90A only if board layout allows SMC and surge energy is limited to ≤400 W |
| 1.5KE91A | Same VBR range, higher VC (137 V), identical DO-15 package, no AEC-Q101 qualification | Acceptable for commercial/industrial use but not certified for automotive deployment | Choose 1.5KE91A for cost-sensitive non-automotive applications where AEC-Q101 is not mandated |
Compared with SMAJ90A and 1.5KE91A, P6KE91HE3/54 delivers superior automotive-grade reliability via AEC-Q101 qualification and tighter VC (125 V vs. 137 V), enabling safer margin for 100 V-rated downstream components in harsh environments.
Availability
P6KE91HE3/54 is available at Aetrix Electronics and suitable for automotive ECUs, industrial sensor interfaces, telecom DC inputs, and OBD-II diagnostic port protection requiring stable component supply across extended temperature and lifecycle demands.
Supply support for P6KE91HE3/54 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 application-specific validation.
The P6KE series targets cost-effective, high-surge-capability transient protection for automotive, industrial, and telecom infrastructure-designed for robustness in real-world voltage transient environments.
FAQ
What is the clamping voltage of P6KE91HE3/54 and how is it measured?
The P6KE91HE3/54 has a maximum clamping voltage (VC) of 125 V, measured at 4.8 A peak pulse current using the standardized 10/1000 µs double-exponential waveform. This value represents the upper voltage limit imposed on the protected line during worst-case transient events, ensuring downstream components remain within safe operating limits. The test condition is defined in IEC 61000-4-5 and ANSI/IEEE C62.41.
Is P6KE91HE3/54 suitable for automotive applications?
Yes, P6KE91HE3/54 is AEC-Q101 qualified and carries the HE3 suffix indicating compliance with JESD 201 Class 2 whisker testing-making it approved for automotive powertrain, body control, and infotainment systems. Its 175 °C max junction temperature and robust surge ratings align with ISO 7637-2 and ISO 16750-2 requirements for vehicle electrical systems.
What does the 'HE3' suffix mean in P6KE91HE3/54?
The 'HE3' suffix in P6KE91HE3/54 denotes two critical qualifications: 'H' indicates AEC-Q101 qualification for automotive use, and 'E3' specifies RoHS-compliant matte tin plating meeting JESD 201 Class 2 whisker resistance. This distinguishes it from commercial-grade 'E3' variants and confirms suitability for long-life, high-reliability deployments.
How does P6KE91HE3/54 differ from bi-directional TVS diodes like P6KE91CA?
P6KE91HE3/54 is uni-directional and protects against positive transients only (cathode to protected line), whereas P6KE91CA is bi-directional and suppresses both polarities. The uni-directional version offers lower leakage at VWM and slightly tighter VBR tolerance, making it preferred for DC power rail protection where polarity is fixed and reverse leakage must be minimized.
What is the thermal resistance and power derating behavior of P6KE91HE3/54?
P6KE91HE3/54 has a typical junction-to-lead thermal resistance (RθJL) of 20 °C/W and junction-to-ambient (RθJA) of 75 °C/W. Its 5.0 W steady-state power dissipation is fully rated at TL = 75 °C; above this, power must be linearly derated to zero at 175 °C. Derating curves are provided in Figure 5 of Vishay document 88369.
P6KE91HE3/54 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-204AC, DO-15, Axial
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 73.7V
- Voltage - Breakdown (Min):
- 81.9V
- Voltage - Clamping (Max) @ Ipp:
- 131V
- Current - Peak Pulse (10/1000µs):
- 4.6A
- Power - Peak Pulse:
- 600W
- 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-204AC (DO-15)
P6KE91HE3/54 FAQ
1.How can I place an order for P6KE91HE3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for P6KE91HE3/54 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 P6KE91HE3/54 reliable?
The price and inventory of P6KE91HE3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6KE91HE3/54 is usually 5 days.
3.What payment methods are accepted for P6KE91HE3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6KE91HE3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6KE91HE3/54?
P6KE91HE3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6KE91HE3/54 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 P6KE91HE3/54?
For technical support, including P6KE91HE3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6KE91HE3/54 requirements.
6.How does Aetrix verify that P6KE91HE3/54 is sourced from the original manufacturer or authorized distributors?
All P6KE91HE3/54 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 P6KE91HE3/54 meets industry standards.
7.What is the process for return or replacement of P6KE91HE3/54?
All P6KE91HE3/54 units undergo pre-shipment inspection (PSI). If there is an issue with P6KE91HE3/54, 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 P6KE91HE3/54 part is unused and in its original packaging.
Return procedure for P6KE91HE3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6KE91HE3/54 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 …
