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P4SMA51CA-E3/61
Vishay General Semiconductor - Diodes Division
TVS DIODE 43.6VWM 70.1VC DO214AC
2185 Pcs New Original In Stock
70.1V Clamp 5.7A Ipp Tvs Diode Surface Mount DO-214AC (SMA)
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5.0 / 5.0
- (109 Ratings)
P4SMA51CA-E3/61
Product Overview
945385
DiGi Electronics Part Number
P4SMA51CA-E3/61-DGManufacturer
Vishay General Semiconductor - Diodes Division
P4SMA51CA-E3/61
Description
TVS DIODE 43.6VWM 70.1VC DO214ACInventory
2185 Pcs New Original In Stock
70.1V Clamp 5.7A Ipp Tvs Diode Surface Mount DO-214AC (SMA)
CAD Models - PCB Symbols & Footprints
Quantity
Minimum 1
Minimum 1
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P4SMA51CA-E3/61 Technical Specifications
Category
Transient Voltage Suppressors (TVS), TVS Diodes
Packaging
Tape & Reel (TR)
Series
P4SMA, TransZorb®
Product Status
Active
Type
Zener
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)
5.7A
Power - Peak Pulse
400W
Power Line Protection
No
Applications
General Purpose
Capacitance @ Frequency
-
Operating Temperature
-65°C ~ 150°C (TJ)
Mounting Type
Surface Mount
Package / Case
DO-214AC, SMA
Supplier Device Package
DO-214AC (SMA)
Base Product Number
P4SMA51
Datasheet & Documents
HTML Datasheet
P4SMA51CA-E3/61-DG
Environmental & Export Classification
RoHS Status
ROHS3 Compliant
Moisture Sensitivity Level (MSL)
1 (Unlimited)
REACH Status
REACH Unaffected
ECCN
EAR99
HTSUS
8541.10.0080
Additional Information
Other Names
P4SMA51CA-E3/61GITR
P4SMA51CA-E3/61GICT
P4SMA51CA-E3/61-DG
P4SMA51CA-E3/61GIDKR
Standard Package
1,800
Alternative Parts
PART NUMBER
MANUFACTURER
QUANTITY AVAILABLE
DiGi PART NUMBER
UNIT PRICE
SUBSTITUTE TYPE
Reviews
5.0/5.0-(Show up to 5 Ratings)
de desembre 02, 2025
반응속도가 빠른 웹사이트 덕분에 필요한 정보를 즉시 확인할 수 있었어요.
de desembre 02, 2025
디지 일렉트로닉스는 다양한 전자제품을 갖추고 있어서 선택의 폭이 넓어요. 가격도 투명하고 믿을 수 있어서 만족스럽습니다.
de desembre 02, 2025
The delivery was fast, and they provided excellent support when I encountered installation issues.
de desembre 02, 2025
Customer service responded promptly and provided clear assistance, enhancing the overall shopping experience.
de desembre 02, 2025
Price affordability combined with reliable after-sales service makes DiGi a leader.
de desembre 02, 2025
Their staff is friendly and always willing to help resolve any issues quickly.
de desembre 02, 2025
Shipping is consistently rapid, allowing me to meet tight project deadlines effortlessly.
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Frequently Asked Questions (FAQ)
What are the key design risks when using the P4SMA51CA-E3/61 for surge protection in a 36V nominal industrial power rail?
When using the P4SMA51CA-E3/61 on a 36V nominal line, the primary risk is inadvertent clamping during normal operation due to the 43.6V reverse standoff voltage being close to potential transient spikes or ripple peaks. Ensure that system-level transients (e.g., load dump or inductive kickback) do not exceed 43.6V under normal operation, as the TVS may activate prematurely. Design in margin by verifying worst-case operating voltage (including ripple) stays below 43.6V. Consider the P4SMA51CA-E3/61 only if surges are infrequent and energy is limited to within its 400W peak pulse rating using proper current limiting.
Can the P4SMA51CA-E3/61 replace a SMAJ51A in a bidirectional protection circuit, and what are the critical differences?
The P4SMA51CA-E3/61 can generally replace the SMAJ51A in bidirectional ESD or surge protection applications, as both are SMA-package bidirectional TVS diodes with similar voltage ratings. However, the key difference lies in clamping performance: the P4SMA51CA-E3/61 has a lower max clamping voltage of 70.1V at 5.7A compared to SMAJ51A's typical 72.5V, potentially offering better protection for sensitive downstream ICs. Confirm the actual surge current profile in your design—P4SMA51CA-E3/61's lower clamping can reduce stress on circuits but ensure PCB layout supports low-inductance paths to avoid voltage overshoot during fast transients.
How does junction temperature affect the long-term reliability of the P4SMA51CA-E3/61 in a sealed outdoor enclosure?
In a sealed outdoor enclosure, the P4SMA51CA-E3/61 may be exposed to sustained high temperatures approaching its 150°C max junction rating, increasing degradation risk after repeated surge events. High temperatures accelerate wear-out mechanisms in Zener-type TVS structures. To maintain reliability, derate the peak pulse current—consider using 70% of rated 5.7A above 100°C ambient. Also ensure adequate copper land (e.g., 50mm² min on thermal pad) for heat dissipation. Monitor thermal cycling in the application, as thermomechanical stress can compromise solder joints over time despite MSL1 rating.
What PCB layout practices should be followed to maximize the transient response of the P4SMA51CA-E3/61 in high-speed data line protection?
The P4SMA51CA-E3/61 is not recommended for high-speed data lines due to unlisted capacitance—typical SMA-package Zener TVS devices can range from 50pF to over 100pF, which risks signal integrity degradation on lines above 1MHz. If used near data paths, place the P4SMA51CA-E3/61 as close as possible to the connector, use shortest possible traces, and route in series with a current-limiting resistor to minimize capacitive loading. For high-speed lines (e.g., RS-485, CAN), consider lower-capacitance alternatives like SP3010UN or Semtech’s RClamp2424A instead.
Is the P4SMA51CA-E3/61 suitable for automotive load dump protection, and what design constraints should be considered?
The P4SMA51CA-E3/61 is not suitable for automotive load dump protection, despite its 43.6V standoff and 150°C rating. Load dump events in 12V systems can reach 102V for up to 400ms, exceeding the P4SMA51CA-E3/61's 70.1V clamping voltage and 400W peak pulse rating, risking catastrophic failure. Use purpose-designed load dump protectors like the LDP200 or TPS26631-Q1 instead. If P4SMA51CA-E3/61 is used in automotive environments, limit its role to ESD and minor transients near connectors, and always include coordination with upstream fuses or PTCs to limit fault energy.
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P4SMA51CA-E3/61 CAD Models
Vishay General Semiconductor - Diodes Division P4SMA51CA-E3/61 PCB symbols & footprints
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