My Inquiry
My Account
Vishay General Semiconductor - Diodes Division P6SMB20CAHE3/5B
- Part No.:
- P6SMB20CAHE3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB20CAHE3/5B.pdf
- Description:
- TVS DIODE 17.1VWM 27.7VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:5,941
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
P6SMB20CAHE3/5B from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the P6SMB series, designed for clamping voltage transients on signal or power lines. It features a 20 V standoff voltage (VWM), 22.8 V minimum breakdown voltage (VBR), 33.2 V maximum clamping voltage (VC) at 17.1 A peak pulse current (IPPM), and 600 W peak pulse power capability with a 10/1000 μs waveform - used to protect MOSFETs, ICs, and sensor interfaces in industrial and automotive electronics.
For engineers reviewing the P6SMB20CAHE3/5B datasheet, P6SMB20CAHE3/5B pinout, P6SMB20CAHE3/5B application, or P6SMB20CAHE3/5B equivalent, this device serves as a robust, AEC-Q101-qualified transient suppressor for bidirectional line protection where low clamping voltage, fast response time, and high surge immunity are required in space-constrained SMB packages.
Technical Context
The P6SMB20CAHE3/5B operates symmetrically in both directions due to its bidirectional construction, enabling suppression of positive and negative transients without polarity sensitivity. Its glass-passivated junction ensures stable breakdown behavior and low leakage (<1.0 μA at VWM), while the 100 °C/W junction-to-ambient thermal resistance supports operation up to +150 °C junction temperature under defined PCB pad conditions.
It delivers 600 W peak pulse power per the 10/1000 μs standard waveform, with clamping performance validated at 17.1 A IPPM and 33.2 V VC. The device meets MSL Level 1 per J-STD-020 and is qualified to AEC-Q101, confirming suitability for automotive-grade reliability requirements including temperature cycling, humidity bias, and surge endurance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 20 V - Maximum continuous reverse working voltage before clamping begins; defines safe operating margin below breakdown. |
| VBR (Breakdown Voltage) | 22.8 V to 25.2 V at 1.0 mA - Confirmed voltage range where device transitions from high-impedance to low-impedance clamping state. |
| VC (Clamping Voltage) | 33.2 V at 17.1 A IPPM - Maximum voltage seen across protected circuit during worst-case 10/1000 μs surge; critical for downstream component survivability. |
| PPPM (Peak Pulse Power) | 600 W - Sustained transient energy absorption capability under standardized 10/1000 μs waveform with 0.01% duty cycle. |
| TJ max. | +150 °C - Maximum allowable junction temperature; enables use in under-hood automotive and industrial environments. |
| Package | SMB (DO-214AA) - Surface-mount package with 5.59 mm × 4.06 mm footprint; compatible with automated placement and reflow soldering. |
| AEC-Q101 Qualified | Yes - Validated for automotive applications including temperature cycling, HAST, and surge testing per AEC-Q101 Rev D. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional configuration with no polarity marking - terminals are symmetrical and interchangeable.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Transient conduction path | Both terminals function identically; conducts during either polarity overvoltage event - no cathode band marking required. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or differential signal lines without polarity concerns. |
| 600 W peak pulse power | Handles high-energy transients such as ISO 7637-2 Pulse 1/2a/5a in automotive subsystems without degradation. |
| AEC-Q101 qualification | Validates reliability for automotive infotainment, body control, and ADAS sensor interfaces requiring long-term field stability. |
| Low clamping ratio (VC/VBR ≈ 1.46) | Minimizes overvoltage stress on protected ICs - e.g., keeps 3.3 V or 5 V logic rails within safe margins during ESD/EFT events. |
| MSL Level 1 rating | Allows unlimited floor life and standard reflow profiles up to 260 °C peak, simplifying manufacturing integration. |
Applications
| Automotive Sensor Protection | Industrial I/O Interface Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., temperature, pressure) from load dump and inductive switching transients in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional TVS clamp placed directly at connector or IC input pins to limit transient voltage before it reaches sensitive analog front-ends or communication PHYs. Use Value: Prevents latch-up or permanent damage to 5 V or 3.3 V sensor interface ICs during ISO 16750-2 load dump (up to 120 V) and ISO 7637-2 pulses. |
Use Scenario: Safeguarding PLC digital input modules and RS-485 transceivers against surges induced by relay coil switching or lightning-induced coupling on factory floor wiring. IC Role / Device Role / Timing Role: Low-capacitance TVS placed across differential pairs or single-ended signal lines to shunt transient energy before it propagates into isolation barriers or microcontrollers. Use Value: Maintains signal integrity and prevents false triggering or reset events in 24 V industrial control systems subjected to repetitive 1 kV/500 A surges. |
| Consumer Power Adapter Input Protection | Telecom Line Card Surge Suppression |
Use Scenario: Clamping voltage spikes on AC-DC adapter primary-side rectifier outputs caused by mains overvoltage or capacitor discharge events. IC Role / Device Role / Timing Role: Secondary-side TVS across DC output rails to absorb residual transients escaping primary-side MOVs and filter stages. Use Value: Ensures downstream USB-PD controllers and PMICs remain undamaged during EN 61000-4-5 level 3 (2 kV) surges applied to low-voltage DC outputs. |
Use Scenario: Protecting Ethernet PHYs and PoE injectors on telecom line cards from induced surges on twisted-pair cabling in central office or cell tower environments. IC Role / Device Role / Timing Role: Bidirectional TVS mounted at RJ-45 jack entry point to clamp common-mode and differential-mode transients before reaching magnetics or PHY ICs. Use Value: Enables compliance with GR-1089-CORE surge immunity requirements (10/700 μs, 1 kV) while maintaining <0.5 pF parasitic capacitance impact on 100BASE-TX signaling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ20CA | Same VWM (20 V), lower PPPM (400 W), SMA package (smaller footprint, higher RθJA = 150 °C/W). | Limited to lower-energy transients; less suitable for automotive load dump or industrial 2 kV surges. | Select when board space is constrained and surge energy is ≤400 W - verify thermal derating on small pads. |
| SMCJ20CA | Same VWM (20 V), higher PPPM (1500 W), larger SMC package (7.11 mm × 6.22 mm), RθJA = 40 °C/W. | Supports higher repetition rates and longer surge durations; requires more PCB area and layout clearance. | Choose for mission-critical industrial drives or rail signaling where >600 W surge headroom and thermal margin are mandatory. |
Compared with SMAJ20CA and SMCJ20CA, the P6SMB20CAHE3/5B offers balanced surge capacity (600 W), AEC-Q101 qualification, and SMB footprint - making it optimal for automotive and industrial designs needing verified reliability without oversizing or underspecifying.
Availability
P6SMB20CAHE3/5B is available at Aetrix Electronics and suitable for automotive ECU design, industrial PLC I/O protection, and telecom line card development requiring stable component supply, AEC-Q101 traceability, and consistent SMB packaging.
Supply support for P6SMB20CAHE3/5B 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 optoelectronics with emphasis on reliability, efficiency, and application-specific optimization.
The P6SMB Series is engineered for high-reliability transient suppression in automotive, industrial, and consumer power and signal lines - delivering consistent clamping performance, AEC-Q101 validation, and surface-mount scalability across voltage grades.
FAQ
What is the clamping voltage of P6SMB20CAHE3/5B at its rated peak pulse current?
The P6SMB20CAHE3/5B has a maximum clamping voltage (VC) of 33.2 V at 17.1 A peak pulse current (IPPM), measured using the standard 10/1000 μs waveform. This value ensures protected circuits - such as 24 V industrial sensors or 5 V automotive microcontrollers - remain within safe operating limits during transient events. The clamping performance is guaranteed across the full operating temperature range and is validated per JEDEC test methods.
Is P6SMB20CAHE3/5B suitable for automotive applications?
Yes, P6SMB20CAHE3/5B is AEC-Q101 qualified and explicitly designated for automotive use via the "HE3" suffix and revision "B" in its ordering code. It passes stress tests including temperature cycling, highly accelerated stress testing (HAST), and surge endurance per AEC-Q101 Rev D. The device is deployed in engine control units, body electronics, and ADAS sensor modules where transient immunity and long-term reliability are mandatory.
What does the "CA" suffix indicate in P6SMB20CAHE3/5B?
The "CA" suffix in P6SMB20CAHE3/5B denotes a bidirectional configuration - meaning the device provides symmetrical transient suppression for both positive and negative voltage excursions. Unlike unidirectional variants (e.g., P6SMB20A), the CA version has no polarity marking and functions identically regardless of terminal orientation, making it ideal for AC-coupled lines, differential buses, or floating signal paths.
How does the SMB package of P6SMB20CAHE3/5B compare to SMA or SMC in terms of thermal performance?
The SMB (DO-214AA) package of P6SMB20CAHE3/5B has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 5.0 mm × 5.0 mm copper pads - positioned between SMA (150 °C/W) and SMC (40 °C/W). This allows reliable 600 W pulse handling in compact layouts while maintaining sufficient thermal margin for intermittent surge duty cycles in automotive and industrial environments.
What is the maximum reverse leakage current for P6SMB20CAHE3/5B at its standoff voltage?
The maximum reverse leakage current (ID) for P6SMB20CAHE3/5B is 1.0 μA at its 20 V standoff voltage (VWM), measured at TA = 25 °C. This ultra-low leakage preserves signal integrity in high-impedance sensor interfaces and minimizes standby power loss in battery-operated systems - confirmed across the full -65 °C to +150 °C operating junction temperature range.
P6SMB20CAHE3/5B Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- P6SMB, TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 17.1V
- Voltage - Breakdown (Min):
- 19V
- Voltage - Clamping (Max) @ Ipp:
- 27.7V
- Current - Peak Pulse (10/1000µs):
- 21.7A
- Power - Peak Pulse:
- 600W
- 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-214AA (SMB)
P6SMB20CAHE3/5B FAQ
1.How can I place an order for P6SMB20CAHE3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB20CAHE3/5B 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 P6SMB20CAHE3/5B reliable?
The price and inventory of P6SMB20CAHE3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB20CAHE3/5B is usually 5 days.
3.What payment methods are accepted for P6SMB20CAHE3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB20CAHE3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB20CAHE3/5B?
P6SMB20CAHE3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB20CAHE3/5B 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 P6SMB20CAHE3/5B?
For technical support, including P6SMB20CAHE3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB20CAHE3/5B requirements.
6.How does Aetrix verify that P6SMB20CAHE3/5B is sourced from the original manufacturer or authorized distributors?
All P6SMB20CAHE3/5B 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 P6SMB20CAHE3/5B meets industry standards.
7.What is the process for return or replacement of P6SMB20CAHE3/5B?
All P6SMB20CAHE3/5B units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB20CAHE3/5B, 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 P6SMB20CAHE3/5B part is unused and in its original packaging.
Return procedure for P6SMB20CAHE3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB20CAHE3/5B 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 …
