My Inquiry
My Account
Vishay General Semiconductor - Diodes Division P6SMB56CAHM3/H
- Part No.:
- P6SMB56CAHM3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB56CAHM3/H.pdf
- Description:
- TVS DIODE 47.8VWM 77VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:4,316
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
P6SMB56CAHM3/H from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, rated for 56 V standoff voltage (VWM), 600 W peak pulse power (10/1000 μs), and clamping voltage of 77.0 V at 7.8 A peak pulse current - deployed for robust overvoltage protection on signal lines and DC rails in automotive sensor interfaces and industrial I/O modules.
For engineers reviewing the P6SMB56CAHM3/H datasheet, P6SMB56CAHM3/H pinout, P6SMB56CAHM3/H application, or P6SMB56CAHM3/H equivalent, key selection criteria include bidirectional clamping symmetry, AEC-Q101 qualification status, MSL Level 1 moisture sensitivity, and compatibility with automated SMT placement on 0.2" × 0.2" copper pads.
Technical Context
This device operates as a voltage-clamped transient protector with symmetrical breakdown behavior in both polarities, enabling suppression of positive and negative transients without polarity dependency. Its glass-passivated junction ensures stable leakage performance and fast response time (<1 ns), while low incremental surge resistance minimizes clamping overshoot during high-di/dt events.
The P6SMB56CAHM3/H is halogen-free, RoHS-compliant, and qualified to AEC-Q101 for automotive use - confirmed by HM3 suffix and "_B" revision code per ordering table. Thermal resistance is specified at RθJA = 100 °C/W (typ.) and RθJL = 20 °C/W (typ.), supporting reliable operation up to TJ = +150 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 47.8 V - maximum continuous reverse voltage before clamping begins; defines safe operating window for protected circuitry. |
| VBR (Breakdown) | 53.2–58.8 V at 1 mA - guaranteed symmetric breakdown threshold in both directions; ensures predictable turn-on under transients. |
| VC (Clamping) | 77.0 V at IPPM = 7.8 A - peak voltage seen by downstream ICs during 600 W transient; critical for MOSFET/IC voltage margining. |
| PPPM | 600 W (10/1000 μs waveform) - standardized surge energy handling capacity; validates protection against ISO 7637-2 Pulse 1/2a/5a. |
| IPPM | 7.8 A - peak pulse current supported at full clamping voltage; determines minimum trace width and PCB layout robustness. |
| TJ max. | +150 °C - maximum junction temperature; enables deployment in under-hood automotive environments and high-ambient industrial enclosures. |
| Package | SMB (DO-214AA) - industry-standard 2-pin surface-mount outline (5.59 mm × 3.94 mm × 2.20 mm); compatible with J-STD-020 reflow profiles. |
Pinout & Package
Package: SMB (DO-214AA), bidirectional configuration - no polarity marking; symmetrical terminals function as anode and cathode depending on transient polarity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | Anode/Cathode (bidirectional) | Either terminal conducts when reverse-biased beyond VBR; no fixed polarity - enables single-device protection of AC or floating signals. |
| Terminal 2 | Anode/Cathode (bidirectional) | Electrically identical to Terminal 1; forms symmetrical clamping path across protected line and ground/rail. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled, differential, or floating signal paths without external polarity management. |
| AEC-Q101 qualified (HM3 suffix) | Validated for automotive applications including engine control units, ADAS sensor interfaces, and body electronics with lifetime reliability requirements. |
| MSL Level 1 (260 °C peak) | Supports standard lead-free reflow without baking; eliminates pre-conditioning delays in high-volume SMT production. |
| 600 W peak pulse power | Meets ISO 7637-2 and IEC 61000-4-5 Level 4 immunity requirements for 12 V/24 V vehicle electrical systems. |
| Low clamping ratio (VC/VBR ≈ 1.37) | Minimizes voltage stress on protected ICs during surge events - critical for 3.3 V/5 V logic and automotive microcontrollers. |
Applications
| Automotive Sensor Interface Protection | Industrial PLC Analog Input Protection |
|---|---|
|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor front-ends (e.g., pressure, temperature) from load dump and inductive switching transients in 12 V vehicle subsystems. IC Role / Device Role / Timing Role: Bidirectional TVS placed between signal line and chassis ground to clamp ±100 V transients within nanoseconds. Use Value: Prevents latch-up or gate oxide damage in automotive-grade MCUs and signal conditioners by limiting voltage to ≤77.0 V during ISO 7637-2 Pulse 5a events. |
Use Scenario: Safeguarding 4–20 mA current loop inputs and ±10 V analog inputs on programmable logic controllers exposed to field wiring surges and ESD. IC Role / Device Role / Timing Role: Primary transient shunt across input terminals, operating in parallel with precision input resistors and op-amp front-ends. Use Value: Maintains signal integrity by clamping transients before they reach instrumentation amplifiers - verified at 7.8 A peak pulse without degradation. |
| Telecom Line Card Surge Protection | Consumer Power Adapter Output Clamping |
|
Use Scenario: Secondary-level protection on Ethernet PHY interfaces, DSL line drivers, and telecom base station backplane traces subject to lightning-induced surges. IC Role / Device Role / Timing Role: Fast-response clamping element placed after primary gas discharge tube (GDT) or MOV, absorbing residual energy. Use Value: Reduces let-through voltage to <77.0 V at 10/1000 μs, ensuring compliance with GR-1089-CORE Level 3 surge immunity requirements. |
Use Scenario: Output rail protection in wall-mounted AC/DC adapters for smart home devices, preventing overvoltage damage during regulator fault conditions. IC Role / Device Role / Timing Role: Final-stage crowbar-like clamp across regulated 5 V/12 V outputs, triggered only during catastrophic failure modes. Use Value: Limits output excursion to ≤77.0 V during shorted-pass-transistor faults, protecting connected USB peripherals and embedded controllers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bidirectional TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ58A-E3/5B | Unidirectional; 58 V VWM, 600 W, SMA package (smaller footprint, higher RθJA = 140 °C/W) | Requires explicit polarity assignment; unsuitable for AC or floating signals without series diodes. | Select only if unidirectional protection suffices and board space constraints favor SMA over SMB. |
| 1.5KE56CA | Through-hole; 56 V VWM, 1500 W, DO-201 package; higher power but incompatible with SMT automation. | Used in legacy designs or high-energy test fixtures where manual assembly or socketing is acceptable. | Choose only for prototyping, repair, or non-automated production where 1500 W rating justifies larger footprint and assembly cost. |
Compared with SMAJ58A-E3/5B and 1.5KE56CA, the P6SMB56CAHM3/H uniquely combines bidirectional operation, AEC-Q101 qualification, SMB package compatibility with J-STD-020 reflow, and 600 W capability - making it optimal for automotive and industrial SMT production where polarity-agnostic protection and supply-chain continuity are mandatory.
Availability
P6SMB56CAHM3/H is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC analog inputs, and telecom line card surge protection requiring stable component supply, AEC-Q101 compliance, and SMT-ready packaging.
Supply support for P6SMB56CAHM3/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 passive components with emphasis on reliability, automotive qualification, and high-volume manufacturability.
The P6SMB Series is designed specifically for surface-mount transient suppression in automotive, industrial, and telecom applications - delivering consistent clamping performance, AEC-Q101 validation, and optimized thermal behavior in the SMB footprint.
FAQ
What is the standoff voltage (VWM) of the P6SMB56CAHM3/H?
The P6SMB56CAHM3/H has a maximum reverse standoff voltage (VWM) of 47.8 V, meaning it remains non-conductive below this voltage in either direction. This value ensures compatibility with 48 V nominal systems and provides sufficient margin above typical 36–42 V operating rails in automotive and industrial applications. The P6SMB56CAHM3/H maintains low leakage (<1 μA) at this voltage, preserving signal integrity in high-impedance circuits.
Is the P6SMB56CAHM3/H qualified for automotive use?
Yes, the P6SMB56CAHM3/H is AEC-Q101 qualified, as confirmed by its HM3 suffix and "_B" revision code in the Vishay ordering table. It meets stress test requirements for temperature cycling, humidity bias, and mechanical shock applicable to automotive electronics. The P6SMB56CAHM3/H is explicitly recommended for engine control, ADAS sensors, and body electronics where long-term reliability under thermal and vibration stress is required.
What does the "CA" suffix indicate in P6SMB56CAHM3/H?
The "CA" suffix in P6SMB56CAHM3/H denotes bidirectional configuration - meaning the device provides symmetrical transient suppression for both positive and negative voltage excursions. Unlike unidirectional variants (e.g., P6SMB56A), the P6SMB56CAHM3/H has no cathode band marking and functions identically regardless of terminal orientation, simplifying layout for AC-coupled or floating signal lines.
What is the clamping voltage of the P6SMB56CAHM3/H at its rated peak pulse current?
The P6SMB56CAHM3/H clamps to a maximum of 77.0 V at its rated peak pulse current (IPPM) of 7.8 A, measured using the standard 10/1000 μs waveform. This clamping voltage directly determines the maximum stress imposed on downstream components during surge events. The P6SMB56CAHM3/H achieves this with a low clamping ratio (VC/VBR ≈ 1.37), ensuring effective protection for 3.3 V, 5 V, and 12 V ICs without excessive voltage margining.
Does the P6SMB56CAHM3/H require special PCB layout considerations?
Yes - Vishay specifies mounting on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal to achieve rated 600 W pulse power dissipation. Narrow traces or insufficient copper area will increase thermal impedance and reduce effective surge capability. The P6SMB56CAHM3/H also requires symmetric routing to maintain balanced inductance in bidirectional paths, especially in high-speed signal protection applications.
P6SMB56CAHM3/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:
- Discontinued at Digi-Key
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 47.8V
- Voltage - Breakdown (Min):
- 53.2V
- Voltage - Clamping (Max) @ Ipp:
- 77V
- Current - Peak Pulse (10/1000µs):
- 7.8A
- 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)
P6SMB56CAHM3/H FAQ
1.How can I place an order for P6SMB56CAHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB56CAHM3/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 P6SMB56CAHM3/H reliable?
The price and inventory of P6SMB56CAHM3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB56CAHM3/H is usually 5 days.
3.What payment methods are accepted for P6SMB56CAHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB56CAHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB56CAHM3/H?
P6SMB56CAHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB56CAHM3/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 P6SMB56CAHM3/H?
For technical support, including P6SMB56CAHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB56CAHM3/H requirements.
6.How does Aetrix verify that P6SMB56CAHM3/H is sourced from the original manufacturer or authorized distributors?
All P6SMB56CAHM3/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 P6SMB56CAHM3/H meets industry standards.
7.What is the process for return or replacement of P6SMB56CAHM3/H?
All P6SMB56CAHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB56CAHM3/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 P6SMB56CAHM3/H part is unused and in its original packaging.
Return procedure for P6SMB56CAHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB56CAHM3/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 …
