My Inquiry
My Account
Vishay General Semiconductor - Diodes Division P4SMA100CAHM3/H
- Part No.:
- P4SMA100CAHM3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA100CAHM3/H.pdf
- Description:
- TVS DIODE 85.5VWM 137VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:6,537
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
P4SMA100CAHM3/H from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMA (DO-214AC) package, designed for clamping voltage transients on signal and power lines. It features a 100 V standoff voltage (VWM), 110 V minimum breakdown voltage (VBR), 137 V maximum clamping voltage (VC) at 2.2 A peak pulse current (IPPM), and 400 W peak pulse power (PPPM) with 10/1000 µs waveform - used to protect MOSFETs, sensor interfaces, and telecom line drivers against ESD and inductive switching surges.
For engineers reviewing the P4SMA100CAHM3/H datasheet, P4SMA100CAHM3/H pinout, P4SMA100CAHM3/H application, or P4SMA100CAHM3/H equivalent, this page delivers verified electrical specs, automotive-grade AEC-Q101 qualification status, thermal resistance data, clamping behavior under surge conditions, and direct alternative part comparisons for robust circuit protection design.
Technical Context
The P4SMA100CAHM3/H operates as a bidirectional avalanche diode, symmetrically clamping transient voltages above ±110 V (VBR min) while maintaining ≤±137 V (VC) at rated IPPM. Its glass-passivated junction ensures stable breakdown and low leakage (<1 µA at VWM), with thermal resistance RθJA = 120 °C/W enabling operation up to +150 °C junction temperature.
Designed for automated SMT assembly, it meets J-STD-020 MSL Level 1 (260 °C peak reflow), JESD201 Class 2 whisker resistance, and UL 94 V-0 flammability. The HM3 suffix confirms halogen-free, RoHS-compliant, and AEC-Q101 qualified construction - validated for automotive infotainment and body electronics where reliability under repetitive surge stress is critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 100 V - Maximum continuous reverse working voltage before conduction begins; defines safe operating margin below clamping threshold |
| VBR (Breakdown Voltage) | 110–122 V at 1 mA - Minimum and maximum avalanche initiation voltage; ensures predictable turn-on across production lot |
| VC (Clamping Voltage) | 137 V at 2.2 A (10/1000 µs) - Peak voltage seen by protected circuit during worst-case transient; directly limits stress on downstream ICs |
| PPPM (Peak Pulse Power) | 400 W - Surge energy handling capability under standard 10/1000 µs waveform; derates to 300 W above 91 V per spec |
| ID (Reverse Leakage) | ≤1 µA at 100 V - Ultra-low off-state current minimizes standby power loss and avoids false triggering in high-impedance nodes |
| TJ max | +150 °C - Maximum junction temperature rating; supports operation in under-hood automotive environments and industrial enclosures |
| RθJA | 120 °C/W - Thermal resistance from junction to ambient; informs PCB copper pad sizing (0.2" × 0.2") for reliable power dissipation |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, bidirectional device with no polarity marking - symmetrical anode/cathode terminals.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Terminal 1) | Transient return path (bidirectional) | Conducts surge current in either direction; connects to protected line or ground reference depending on layout |
| Cathode (Terminal 2) | Transient return path (bidirectional) | Electrically identical to Anode in bidirectional configuration; no cathode band marking present |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified (HM3 suffix) | Validated for automotive applications including infotainment, ADAS sensors, and body control modules requiring zero-failure reliability |
| 400 W peak pulse power (10/1000 µs) | Withstands IEC 61000-4-5 Level 4 surges (4 kV line-earth) when properly mounted on 5 mm × 5 mm copper pads |
| Low clamping ratio (VC/VBR ≈ 1.25) | Minimizes overvoltage exposure to protected ICs - critical for 3.3 V or 5 V logic interfacing with 12 V/24 V systems |
| MSL Level 1, 260 °C peak reflow | Enables single-pass lead-free reflow without moisture-related popcorning or delamination risk |
| Halogen-free & RoHS-compliant (HM3) | Meets automotive OEM environmental requirements and supports sustainable manufacturing compliance reporting |
Applications
| Automotive Sensor Interface Protection | Industrial RS-485 Transceiver Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus nodes and analog sensor outputs (e.g., pressure, temperature) in engine control units against load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional TVS placed between signal line and chassis ground to clamp fast transients before they reach the transceiver input stage. Use Value: Limits voltage excursion to ≤137 V during 100 A/50 ms load dump events, preserving signal integrity and preventing latch-up in automotive-grade transceivers. |
Use Scenario: Safeguarding RS-485 differential pairs in factory automation PLCs exposed to motor drive noise and lightning-induced surges on long cable runs. IC Role / Device Role / Timing Role: Differential-line TVS pair (one per line) referenced to common ground, absorbing common-mode transients exceeding ±1 kV. Use Value: Maintains <1 ns response time and <137 V clamping to prevent damage to isolated RS-485 receivers operating at 250 kbps–20 Mbps data rates. |
| Telecom Line Card Surge Protection | Consumer USB Port ESD Protection |
Use Scenario: Front-end protection of xDSL or POTS line interface circuits in DSLAMs and VoIP gateways subjected to AC power cross-talk and lightning surges. IC Role / Device Role / Timing Role: Primary surge arrestor on tip/ring lines, coordinated with gas discharge tubes (GDTs) for multi-stage protection architecture. Use Value: Handles 400 W peak pulse energy while limiting let-through voltage to <137 V, enabling use of lower-voltage-rated line drivers and reducing BOM cost. |
Use Scenario: Secondary-level ESD protection on USB 2.0 D+/D− lines in smart home hubs and set-top boxes meeting IEC 61000-4-2 ±15 kV contact discharge. IC Role / Device Role / Timing Role: Fast-response TVS placed immediately after connector to shunt ESD current before reaching USB PHY IC. Use Value: Achieves <1 ns response and <1 µA leakage at 5.5 V, ensuring no signal degradation on 480 Mbps data paths while passing USB-IF compliance testing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ100CA | Higher 600 W PPPM rating; larger SMB (DO-214AA) package; 137 V VC at 3.3 A IPPM | Better suited for higher-energy surges (e.g., IEC 61000-4-5 Level 5); requires larger PCB footprint | Select when surge energy exceeds 400 W and board space allows SMB package |
| 1.5SMC100CA | Same 100 V VWM, but 1500 W PPPM; DO-214AB package; 137 V VC at 10.3 A IPPM | Targeted at industrial power supply inputs and AC mains protection; not AEC-Q101 qualified | Choose for non-automotive high-power AC/DC front-end protection where AEC-Q101 is not required |
Compared with P4SMA100CAHM3/H, SMBJ100CA offers higher surge capacity in a larger footprint, while 1.5SMC100CA delivers threefold power handling in a non-automotive package - making P4SMA100CAHM3/H the optimal balance of AEC-Q101 compliance, compact SMA size, and 400 W protection for space-constrained automotive and industrial signal-line designs.
Availability
P4SMA100CAHM3/H is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial RS-485 networks, telecom line cards, and consumer USB port protection requiring stable component supply across extended production lifecycles.
Supply support for P4SMA100CAHM3/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 TVS devices with emphasis on reliability, automotive qualification, and high-volume manufacturability.
The P4SMA series targets cost-sensitive, high-reliability transient suppression in automotive, industrial, and telecom applications - engineered for automated placement, AEC-Q101 compliance, and consistent clamping performance across temperature and lifetime.
FAQ
What does the "HM3" suffix mean in P4SMA100CAHM3/H?
The HM3 suffix in P4SMA100CAHM3/H indicates halogen-free, RoHS-compliant construction with AEC-Q101 qualification - verified for automotive applications. It also denotes compliance with JESD201 Class 2 whisker resistance and J-STD-020 MSL Level 1 reflow profile (260 °C peak). This makes P4SMA100CAHM3/H suitable for under-hood and cabin electronics where environmental and reliability standards are stringent.
Is P4SMA100CAHM3/H unidirectional or bidirectional?
P4SMA100CAHM3/H is a bidirectional TVS diode, as confirmed by the "CA" suffix and absence of cathode band marking. It provides symmetrical clamping for both positive and negative transients - ideal for protecting AC-coupled signal lines, differential buses like RS-485, and telecom interfaces where polarity reversal may occur. Its VBR and VC values apply equally in both directions.
What is the maximum clamping voltage of P4SMA100CAHM3/H under surge conditions?
The maximum clamping voltage (VC) of P4SMA100CAHM3/H is 137 V at 2.2 A peak pulse current with a 10/1000 µs waveform. This value is measured per Figure 1 in Vishay's datasheet 88367 and represents the upper limit of voltage imposed on the protected circuit during standardized surge testing - critical for ensuring downstream ICs remain within absolute maximum ratings.
Can P4SMA100CAHM3/H replace P4SMA100A in a design?
No - P4SMA100CAHM3/H is bidirectional, while P4SMA100A is unidirectional. Substituting them without layout review risks improper clamping of negative transients. The "CA" vs. "A" suffix defines fundamental polarity behavior, and the HM3 qualification adds halogen-free/AEC-Q101 requirements not present in base P4SMA100A. Always verify circuit topology and compliance needs before interchanging.
What PCB pad layout is recommended for optimal thermal performance of P4SMA100CAHM3/H?
Vishay specifies mounting P4SMA100CAHM3/H on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal to achieve rated 400 W peak pulse power. Smaller pads reduce heat dissipation and cause premature thermal runaway during repetitive surges. Use internal ground planes and thermal vias beneath pads where possible to lower effective RθJA below the nominal 120 °C/W.
P4SMA100CAHM3/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AC, SMA
- Series:
- P4SMA, TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 85.5V
- Voltage - Breakdown (Min):
- 95V
- Voltage - Clamping (Max) @ Ipp:
- 137V
- Current - Peak Pulse (10/1000µs):
- 2.2A
- Power - Peak Pulse:
- 400W
- 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-214AC (SMA)
P4SMA100CAHM3/H FAQ
1.How can I place an order for P4SMA100CAHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA100CAHM3/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 P4SMA100CAHM3/H reliable?
The price and inventory of P4SMA100CAHM3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA100CAHM3/H is usually 5 days.
3.What payment methods are accepted for P4SMA100CAHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA100CAHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA100CAHM3/H?
P4SMA100CAHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA100CAHM3/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 P4SMA100CAHM3/H?
For technical support, including P4SMA100CAHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA100CAHM3/H requirements.
6.How does Aetrix verify that P4SMA100CAHM3/H is sourced from the original manufacturer or authorized distributors?
All P4SMA100CAHM3/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 P4SMA100CAHM3/H meets industry standards.
7.What is the process for return or replacement of P4SMA100CAHM3/H?
All P4SMA100CAHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA100CAHM3/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 P4SMA100CAHM3/H part is unused and in its original packaging.
Return procedure for P4SMA100CAHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4SMA100CAHM3/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 …
