My Inquiry
My Account
Vishay General Semiconductor - Diodes Division P6SMB51CAHM3_A/H
- Part No.:
- P6SMB51CAHM3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB51CAHM3_A/H.pdf
- Description:
- TVS DIODE 43.6VWM 70.1VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:8,096
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
P6SMB51CAHM3_A/H from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping voltage transients on signal and power lines. It features 51 V breakdown voltage (VBR min/max: 48.5–53.6 V at 1 mA), 43.6 V standoff voltage (VWM), 70.1 V maximum clamping voltage (VC) at 8.6 A peak pulse current, and 600 W peak pulse power rating with 10/1000 µs waveform - used to protect automotive sensor interfaces and industrial I/O circuits.
For engineers reviewing the P6SMB51CAHM3_A/H datasheet, P6SMB51CAHM3_A/H pinout, P6SMB51CAHM3_A/H application, or P6SMB51CAHM3_A/H equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification status, halogen-free RoHS compliance, and thermal resistance (RθJA = 100 °C/W) under standard PCB pad layout.
Technical Context
This device operates as a voltage-clamped surge protector with symmetrical reverse/forward conduction behavior due to its bidirectional architecture. It responds within <1 ps to transient overvoltages and maintains low incremental surge resistance during 10/1000 µs pulses up to 600 W.
Designed for mounting on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal, it achieves thermal performance characterized by RθJL = 20 °C/W (junction-to-lead) and supports continuous power dissipation of 5.0 W at TA = 50 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 48.5 V / 53.6 V at IT = 1 mA - defines precise voltage threshold where avalanche conduction begins in both directions |
| VWM | 43.6 V - maximum continuous reverse operating voltage before leakage exceeds 1 µA |
| VC @ IPPM | 70.1 V at 8.6 A - clamped voltage seen across terminals during full 600 W transient event |
| PPPM | 600 W - peak pulse power handling with 10/1000 µs waveform, enabling protection against lightning-induced surges and inductive switching spikes |
| IPPM | 8.6 A - maximum non-repetitive peak pulse current supported without degradation |
| TJ max. | +150 °C - maximum junction temperature allowing reliable operation in under-hood automotive environments |
| RθJA | 100 °C/W - thermal resistance from junction to ambient air on standard PCB layout, critical for derating calculations |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, halogen-free, RoHS-compliant, AEC-Q101 qualified (HM3 suffix). Dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H); cathode band not marked (bidirectional).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry point (bidirectional) | Accepts surge current in either polarity; connects to protected line or ground return path depending on circuit topology |
| Cathode | Transient current exit point (bidirectional) | Completes low-impedance path to reference plane during clamping; electrically symmetric with anode in CA devices |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity concerns |
| AEC-Q101 qualification | Validated for automotive applications including engine control modules and ADAS sensor interfaces |
| 600 W peak pulse power | Withstands IEC 61000-4-5 Level 4 surge events (4 kV open-circuit, 2 kA short-circuit) when properly laid out |
| Low clamping ratio (VC/VBR ≈ 1.45) | Minimizes overvoltage stress on downstream ICs such as CAN transceivers or ADC front-ends |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and reflow compatibility up to 260 °C peak temperature |
Applications
| Automotive Sensor Protection | Industrial I/O Interface |
|---|---|
Use Scenario: Protecting LIN bus and analog sensor outputs (e.g., pressure, temperature) from load dump and ESD in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional TVS placed between signal line and chassis ground to clamp transients before reaching MCU analog input or LIN transceiver. Use Value: Prevents latch-up or permanent damage to 5 V tolerant sensor interface ICs during 12 V system load dump events (ISO 7637-2 Pulse 5a). |
Use Scenario: Shielding RS-485 transceiver data lines in programmable logic controllers exposed to motor drive noise. IC Role / Device Role / Timing Role: Low-capacitance TVS mounted directly at connector entry point to suppress fast-rising common-mode surges. Use Value: Maintains signal integrity below 100 pF junction capacitance while limiting induced voltages to ≤70.1 V during 1 kV/µs transients. |
| Consumer Power Adapter Input | Telecom Line Card Surge Protection |
Use Scenario: Input-stage transient suppression on 5 V/12 V DC adapters subjected to mains-borne surges and hot-plug events. IC Role / Device Role / Timing Role: Primary-level TVS placed after fuse and before primary-side controller to absorb energy before upstream components. Use Value: Handles repetitive 600 W pulses at 0.01% duty cycle, extending adapter lifetime in unregulated AC environments. |
Use Scenario: Secondary-side protection of Ethernet PHY power rails and MDI lines in VoIP gateways. IC Role / Device Role / Timing Role: Bidirectional clamp across isolated DC-DC output to prevent coupling of surge energy into sensitive PHY silicon. Use Value: Halogen-free construction meets IPC-1752A material declaration requirements for telecom infrastructure equipment. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ51CA | Same VBR, VWM, VC; lower PPPM = 600 W but rated for 1 kW peak in some variants; identical SMB package | Not AEC-Q101 qualified; intended for commercial-grade consumer/industrial use only | Select when automotive qualification is unnecessary and cost optimization is prioritized |
| 1.5SMC51CA | Higher PPPM = 1500 W; larger SMC (DO-214AB) package; same VBR/VWM range | Requires larger PCB footprint and higher thermal mass; suited for high-energy industrial surge zones | Choose when system-level surge testing exceeds IEC 61000-4-5 Level 4 and board space permits larger package |
Compared with SMBJ51CA and 1.5SMC51CA, P6SMB51CAHM3_A/H uniquely combines AEC-Q101 qualification, halogen-free construction, and SMB footprint - making it optimal for space-constrained automotive electronics where reliability and regulatory compliance are mandatory.
Availability
P6SMB51CAHM3_A/H is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial I/O protection, consumer power adapter inputs, and telecom line card surge suppression requiring stable component supply across extended production lifecycles.
Supply support for P6SMB51CAHM3_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, MOSFETs, and protection devices with emphasis on high-reliability and automotive-grade solutions.
The P6SMB Series targets cost-sensitive yet robust transient protection needs in automotive, industrial, and telecom systems - delivering standardized 600 W surge capability in compact SMB packages with AEC-Q101 options.
FAQ
What does the "CA" suffix indicate in P6SMB51CAHM3_A/H?
The "CA" suffix denotes a bidirectional configuration, meaning the P6SMB51CAHM3_A/H provides symmetrical clamping in both forward and reverse directions. This eliminates polarity concerns during PCB layout and enables protection of AC-coupled or floating signal paths - unlike unidirectional "A" variants which require correct cathode orientation relative to ground.
Is P6SMB51CAHM3_A/H suitable for automotive applications?
Yes, P6SMB51CAHM3_A/H is AEC-Q101 qualified (confirmed by HM3 suffix and Vishay documentation), making it suitable for automotive applications including engine control units, body electronics, and ADAS sensor interfaces. Its operating junction temperature range of –65 °C to +150 °C supports under-hood deployment.
How does the clamping voltage of P6SMB51CAHM3_A/H compare to its breakdown voltage?
The P6SMB51CAHM3_A/H has a breakdown voltage range of 48.5–53.6 V and a maximum clamping voltage of 70.1 V at 8.6 A. This yields a clamping ratio of approximately 1.45, indicating effective voltage limiting with minimal overvoltage margin - critical for protecting 5 V or 3.3 V ICs downstream of the device.
What is the thermal resistance of P6SMB51CAHM3_A/H and how does it affect layout?
P6SMB51CAHM3_A/H has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 0.2" × 0.2" copper pads per terminal. To maintain safe junction temperatures during repetitive surges, PCB layout must adhere to this pad size; reducing copper area increases thermal impedance and risks exceeding the +150 °C TJ limit.
Does P6SMB51CAHM3_A/H meet lead-free and halogen-free requirements?
Yes, P6SMB51CAHM3_A/H carries the HM3 suffix, confirming it is halogen-free, RoHS-compliant, and manufactured using matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. It satisfies IPC-1752A material declarations required for automotive and telecom markets.
P6SMB51CAHM3_A/H 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:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 43.6V
- Voltage - Breakdown (Min):
- 48.5V
- Voltage - Clamping (Max) @ Ipp:
- 70.1V
- Current - Peak Pulse (10/1000µs):
- 8.6A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
P6SMB51CAHM3_A/H FAQ
1.How can I place an order for P6SMB51CAHM3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB51CAHM3_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 P6SMB51CAHM3_A/H reliable?
The price and inventory of P6SMB51CAHM3_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 P6SMB51CAHM3_A/H is usually 5 days.
3.What payment methods are accepted for P6SMB51CAHM3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB51CAHM3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB51CAHM3_A/H?
P6SMB51CAHM3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB51CAHM3_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 P6SMB51CAHM3_A/H?
For technical support, including P6SMB51CAHM3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB51CAHM3_A/H requirements.
6.How does Aetrix verify that P6SMB51CAHM3_A/H is sourced from the original manufacturer or authorized distributors?
All P6SMB51CAHM3_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 P6SMB51CAHM3_A/H meets industry standards.
7.What is the process for return or replacement of P6SMB51CAHM3_A/H?
All P6SMB51CAHM3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB51CAHM3_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 P6SMB51CAHM3_A/H part is unused and in its original packaging.
Return procedure for P6SMB51CAHM3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB51CAHM3_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 …
